Committed to the healthy growth of the steel pergolas entrepreneurs

Experts, all entrepreneurs: very pleased to participate in the construction steel 2011 industry conference, just the successful conclusion of the "two sessions", to implement the scientific concept of development, the implementation of the national "12th Five-Year Plan for the theme of China's construction steel The structure of the industry on how to take energy conservation, green development path, the General Assembly convened the time it's very good

I held to the victory of the General Assembly on behalf of the China Construction Metal Structure Association warm congratulations! Session of Steel Industry Conference held annually, is to take the industry experts, entrepreneurs building leading authorities invited jointly study countries new industrial policy, analysis of industry development direction and trends, ideas and approaches to explore the healthy development of the industry, exchange of experience and results of the latest industry developments, collect and reflect the demands of enterprises and entrepreneurs, steel pergolas Committee based industry, service business an important task, but also a major event of the construction steel industry. Industry conference every year, there should be a theme, the theme of this year's General Assembly is the steel enterprises, entrepreneurs. The development of the industry to rely on the enterprises and entrepreneurs. Take this opportunity to talk about personal understanding.

, Construction steel entrepreneur era of growth opportunities, construction steel industry development status. With the rapid growth of the national economy and the full implementation of the energy saving policy, construction steel structure entered a period of rapid growth in recent years, a number of steel structure construction works on behalf of the international level today in China where they stand; a awarded to adapt to market competition, the strength, high starting point, the steel companies to quickly grow. According to preliminary statistics, by the end of 2010, China's annual processing capacity of more than 50,000 tons of large steel company has 39 1.2-5 million tons of annual processing capacity of an enterprise has more than over 60, these enterprises lead the industry tide head, gradually to management science, focusing on quality, good at absorbing and digesting international advanced technological achievements have been reached or exceeded the international advanced level in some areas of technology. Judging from the trend of the development of the industry,

The steel company has already begun from extensive to technology-based change by blind dilated, intensive transition to managed some technical strength and shoddy steel structure workshop, began to be eliminated or mergers and acquisitions, a number of with the international advanced level in the steel giant is formed, to adapt to market demand and improve the quality of the project's point of view, are more concerned about the preferred design, attention to technical content, concerned about the quality of the project, to form their own technological advantage and corporate brand, construction steel structure "bright spots" of the industry, "star." From the current industry trends, we want to see the steel structure not only meet the requirements of low-carbon, energy-saving and environmental protection, but also reflects the structure is solid, recyclable, this time the nine major earthquake in Japan, the real floor back room the casualties of the collapse is rarely, in Tokyo, the two buildings shaking almost bumped together, did not collapse, I think the most important thing is a solid steel structure played a role, so steel residential building will have broader prospects and development space. From the scale of the development of the industry, three large state-owned, private, foreign investment and promote each other and complement each other, the initial formation of the pattern of benign and healthy development of large state-owned steel companies, mainly in the construction of steel structure, Baoye MCC

Winning technology and quality, the construction of a number of high domestic, large, new, special projects; rapid development of a number of private steel companies Hangxiao, Seiko, Southeast grid to adapt to market capability, designed processing train scale expansion soon; Butler, AP and other foreign steel companies, through a joint venture, in the domestic market gradually gain a firm foothold, seize market opportunities, technology and capital to bring a new design philosophy, to promote China's steel construction developed rapidly with international standards has played a positive role. These enterprises make a significant contribution to the national economic construction, but also the prosperity of the cause of China's steel made unremitting efforts. 2, the correct interpretation of the "12th Five-Year Plan themes, and grasp the historical opportunity of development of the industry: 2011 national" 12th Five-Year "first year, to discuss the just-concluded national" two sessions "through the" National Economic and Social development of the 12th Five-Year Plan ", which is a programmatic document for the next five years, the country's economic construction and development, the Ministry of Construction recently the upcoming release of the" 12th Five-Year Plan "of the development of the construction industry, construction steel Commission preliminary draft construction steel industry, the development of the "12th Five-Year Plan" draft distributed for comments, these are the next five years, we have to learn to grasp the development of the industry. Implement the national "12th Five-Year Plan, as an industry, we must first clear what the direction of development, policy guidance, and industrial control objectives; as a business, you should study the country's economic policy toward clear development goals, seize the opportunity to achieve scientific development and sustainable development. National "12th Five-Year Plan embodies a core idea of ​​the harmonious development of scientific development, the transformation of economic growth mode, highlighting energy saving, green economy, between man and nature. The main tone of this development has brought a new historic opportunity for the development of construction steel industry. Accordance steel pergolas country's economic development and planning, construction steel industry in the "Twelfth Five-Year" period will continue to be a development of the "golden period, industrialization trend of the city, municipal infrastructure, residential steel industrialization, as well as on behalf of the city's image public buildings will be a huge market of steel structure in this market, who in line with the country's green energy-saving policy, who market rational layout, who can do the leading technology and first-class service, who will be in the fierce market competition to seize the initiative. 3, the founding of the implementation of the "12th Five-Year Plan, focusing on the transformation of enterprise growth mode. As efforts to speed up the transformation of economic development in the national "12th Five-Year Plan, the construction of a resource-saving and environment-friendly society. In other words, energy conservation, eliminate backward production capacity is still the "12th Five-Year" period fixed target. Construction steel industry, from simple scale growth must transition to the the technology innovative energy-saving industry, and take the road of green building. A number of key enterprises in the industry, to play to their strengths in independent innovation, upgrading and updating work hard. Steel production consumes a lot of energy and resources, to achieve the national commitment to energy-saving emission reduction targets, in a new development strategy for the country, the amount of steel needed per billion GDP in the next few years or ten years, will continue reduced, will significantly slow the growth of the domestic steel consumption. In this regard, the steel industry have foresight, forward-looking, develop appropriate strategies and measures. Steel structure enterprise inner strength, I think that the focus in the optimization of the design, marketing intensive production, and work hard to steel pergolas the level of technical equipment. The need to adapt to market competition, the scientific and technological innovation, technology leadership on an issue, in line to the world's advanced level, reduce production costs, reduce material consumption, improve project quality and so on. In short, in the new stage of development, the best, the best, most province is the steel companies a real competitive advantage.

steel structure warehouseoutdoor anticorrosive paint matching program

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steel structure workshop lattice boom mobile crane repair

The steel structure workshop cranes the most tire cranes, crawler cranes and some truck crane and a dedicated mobile cranes are mounted lattice boom and top pulley block lifting device to change the position of the wire rope liter, in order to achieve the weights lift; longer be changed by changing the the truss arm's length and tilt angle to promote height and radius. Therefore, maintaining the integrity of the lattice boom is very important. These can cause varying degrees of lattice boom crane lifting heavy objects operating content diversity and a wide range of operating environments, as well as the level of the driver of the crane operation, and other reasons (and some illegal operations), injury, and even folding arm or casualties. 1 crack 
The tube truss arm steel pipe is welded at very prone to crack; carefully view the magnifying glass to carefully observe the necessary application. Based on our years of experience in the weld cracks at the very hour, it is necessary to conduct regular follow-up checks, pay close attention to the development and changes of the crack, in order to take timely measures. When the width of the crack is large enough to more than 1mm, it shall promptly repair welding. The specific method is to first crack at the original weld grinding, remove the number, as the case may be; then repair welding; the last renovation can.
Lattice boom pipe surface pit when the pit depth of the steel pipe of the arm thickness dimensions, and the deformation of the pits to reach 25mm in diameter (diameter of 2 ~ 5mm), and a ruler, if the position of the pit on the lattice boom steel surface can be measured in accordance with the method shown in Figure 1, the depth of the pit, the upcoming selecting steel balls into the pit, if the steel ball on the upper vertex just in contact with the lower edge of the rectangular, then we can depending Ball the diameter of the depth of the pit. If the position of the pit in the side surface of the steel pipe or below, can be first with butter sticking to the ball and then measured. Damage of such maintenance, available welded steel pipe of the same general material as the original steel reinforcement (see Figure 2), i.e. divided into two halves take a period of pipe along the centerline of its ends bevelled Stock weld perpendicular to the arm of the trussin the longitudinal direction of the steel pipe. Above the original lattice boom pipe to be welded at must be painted before welding polished clean, good preparation before welding single serious injury of steel pipe truss arm
When the the lattice boom steel structure workshop root steel surface damage is more serious, should be taken to remove the serious injury section of steel pipe, re-weld on a section of steel pipe processing, but must be coupled with a period of strengthening steel pipe inside the steel pipe. Section of the truss arm steel pipe has been removed so that before welding to strengthen steel pipe insertion to strengthen the steel pipe should be made of the same length of two sections (see Figure 3a and Figure 3b), and has threaded and welded two ways to connect . Strengthen the pipe L1 and L2 of the length to be removed than the lattice boom pipe section of short 20mm, and its outer diameter than lattice boom steel pipe inner diameter 20 to 40μm, to the reinforcing pipe in both can move within the lattice boom pipe is no longer loose. First strengthen steel pipe L1 and L2 respectively inserted into the the lattice boom steel pipe, and threaded connections to get up, and then tighten the two shaft shoulder by Yan, held pinpoint to strengthen steel pipe location, respectively the screw in position after, respectively, at the screw and two weld it either. The truss arm steel pipe weld to be made slant, its steel tube axis perpendicular angle between 10 ° ~ 30 °, such as damage to the tubes, should choose 10 °. At this point, and then carefully measuring the lattice boom pipe welding after the actual gap size, and with reference to the shape shown in Figure 2, the next section of steel pipe material, ends made 30 slant, sectioned along the middle of welding, in the notch of the lattice boom pipe; finishing, paint can 
Often detect the steel structure workshop arm section pin pin is also connected at the top of the arm section (hook block group), middle arm section (fixed) telescopic cylinders, the basis of arm section (turntable, luffing cylinder block rope pulley shaft), etc. should always check.When the wear amount of 5% of the original size, shall be promptly replaced. Check, also the tube lattice boom on a supporting point, remove a check one, and then install a by root check until the check is comple

The design of multi-layer floor lightsteel structure workshopic Comparison

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steel structure warehouse roof truss construction safety measures

steel structure warehouse installation. Construction method: the engineering steel structure installation, first of all review the axis and the basis of the top surface of the concrete foundation elevation points Lifting the first lifting of all steel columns, be corrected, fixed grout, in turn lifting the first floor to the five-story steel beams, with hanging with the adjustment, and then to install fixed, and finally lifting the roof support and purlin system. 2. Construction sequence: Live hoisting divided into two construction unit, each unit, respectively, to conduct an independent operating unit with a 50-ton crane, lifting by 8 axis to an axis from east to west, the unit using 50 tons crane by 9-axis to 15-axis from west to east, lifting, hoisting see hoisting plan in order. 3 pre-installation preparation. The the column bolt construction: review the construction of civil foundation column foot positioning axis, buried anchor bolts. To ensure accurate positioning of the anchor bolt, anchor bolts steel template hole sets fixed positioning, and repeatedly checking correct only after the pouring of concrete construction. Anchor bolts exposed part of the ground with plastic sheeting wrapped protection. . Preparation of installation plans and components supply plan, organize construction.

. Check the steel components: steel components factory should have factory certification, drawings the enumeration for review components before installing the components shipped in accordance with the order of installation to installation within not affect the installation conditions, try to members on the installation location below , in order to ensure ease of installation. ④. Standard section of the installation process ⑤. Installation quality standards for the project name to allow deviation the verticality single column buildings overall H/100, ≤ 10mm elevation Liang surface L/1000 and to ≤ 10mm capitals ≤ 5mm building height ± n (△ n + △ n + △ w) 4. Installation and construction process. Steel columns installed: the hoisting First determine the components hanging position, determine the banding method, good protective measures when lifting. After the lifting of the steel column, when the column foot away from the anchor bolts about 30-40CM righting the column foot mounting holes bolt, slow off the hook in place. After the beginning of the school is to be vertical deviation in 20MM, tighten the bolts, temporary fixed can be decoupled.


②. Steel girder lifting: steel girder lifting after the completion of the review in the pillars, and two points symmetrical lashing lifting in place to install steel beams when lifting. From the column datum 100MM steel girder lifting slowly slow in place until the steel beams hoisting butt adjustment correction, and then fixed connection. The steel steel structure warehouse lifting with hanging with theodolite correction, feel free to correct deviations. ③. Purlin installation wall: purlin sectional area is smaller, lighter weight, using a hook hanging method hoisting or lifting into pieces. The purlins correction pitch size and flatness. Pitch inspection sample rod along the purlin rod moves back and forth between any error, relax or tighten the bolts to be corrected. Flatness correction with cable and steel rule checks, and finally bolted. 5. The installation corrected ①. Steel columns correction: vertical steel columns degree correction using theodolite or hanging wire hammer test, using the jack when there is a deviation to be corrected, and elevation correction jacks on the base a little elevated, and then increase or decrease the pad thickness correction is correct, the column foot immediately after tight solid anchor bolts until the steel columns overall correction the correct pouring fine stone concrete fixed in the column under the soles of the feet. ②. The steel beams correction: steel beam axis and vertical degrees of measurement correction, correction jack and pour chain fixed immediately corrected. 6. The construction of high-strength bolts ①. High-strength bolts in the pre-construction material certificate (quality assurance) must retest must do before using. ②. High-strength bolts designated persons management safekeeping, shall not abandonment, not bruised bolts and contaminated dirt to prevent the torque coefficient changes during the installation process.


 ③. High-strength bolts to moisture, corrosion. ④. Application the bald the crowbar and rushed nails is up and down (or around) the connection plate screw holes so bolts can freely invest mounting bolts. ⑤. Connecting plate screw holes of error should check the discretion, if they are to adjust the screw holes invalid or the rest of the the local screw holes malposition, electric reamer or manual reamer punch. ⑥. Connected on the same surface, high strength bolts shall be invested in the same direction, should the day end after the installation of the high-strength bolts screwed completed. (B). Wall pressure type color plates installed. ①, pre-construction preparation prior to the construction and installation of steel sheeting envelope, ordered the construction drawings, design and construction personnel, technical training and production safety tests, and in accordance with the design documentation organization. ②, according to the file details check specifications and quantities of various types of materials, the damaged steel sheeting, flashings board shall promptly repair and replacement. ③, various types of construction equipment should be complete and normal operation. ④ review with steel sheeting construction installed on steel components installed accuracy, clear purlins installed weld drug skin and spatter, brushing and anti-rust paint anti-corrosion treatment. 2. Pressure-type color board construction process: the wallboard installed purlin position from one end to begin between the board and the board must clench, and then screw the wallboard seams waterproofing. Installation of steel sheeting, side laying side to adjust its position, while fixed. (C) floor bearing plate installed prior to the installation of the floor bearing plate construction, draw the corresponding row board diagram, in accordance with the construction drawings. Began laying steel sheeting along one end of the floor, while laying side to adjust its position, edge fixed. In case of the hole at first to install the pressure plate, then cutting the hole size based on the actual hole location. Stud connections combination connected from the floor beams with reinforced concrete floor, construction pull arc stud welding machine (Model: YD-200LS) and gun (Model: YS-223G), and use the deoxyribonucleic arc resistance thermal ceramics seat. Welding method: Turn the welder torch power the cylindrical pegs set in the torch, arc-proof seat and start welding torch, current fuse, arcing seat, the top tight base material by a short cylindrical pegs to a certain speed melting an end portion, the completion of the cutting power columnar stud welding is fixed on the base material. Stud welding inspection: columnar pegs the quality of hammering, supplemented by the appearance of surface inspection, take 1/500 per day production bending checks, no weld fracture considered qualified, such as weld cracks The peg sentence is scrapped, need to re-welding in the vicinity of a columnar nail as a supplement. VII. Quality assurance measures????? Company adhere to the "user is God, quality of life," the quality policy, seriously operation GB/T19002-9002 quality management model, quality supervision of the different types of work and every process, so that the construction process materials, semi-finished products, finished products quality under controlled conditions, so that the quality of the project are effectively guaranteed fundamentally.


Process quality assurance measures. Steel production: 1.1 This structure chosen steel factory certificate and the original data, and requirements into the plant must be after retest qualified, before use of steel. 1.2 good selection, use fully functional processing equipment, requiring factory production part of the H-beam flange plate using single-sided 45-degree bevel butt, web-sided 45-degree bevel miter. 1.3 Electrodes should have factory certification or material report, welding electrodes applied before drying oven for drying, use submerged arc wire and flux then selected must steel structure warehouse matched with the base metal. 1.4 Upon completion of the production of components of this steel in need of shot blasting, primed requirements rust within 24 hours, using stencilled primer, the paint film thickness to meet design requirements. 1.5 All operators must be performed in strict accordance with the technical, quality, safety tests, content requirements of welding personnel must be certified. 1.6 This steel structure steel requires welding of butt welds subject to ultrasonic flaw detection test, the detection level for the two. 1.7 steel structure to improve the accuracy of system holes hole drilling molded. Drill made of medium carbon steel is applied, shall be quenched the the jig bore diameter should be higher than the design aperture 0.3MM, jig thickness should not be too large, generally with 15MM. 1.8 In order to ensure the production of precision steel components material when preamplifier shrink the amount of pre-big bang may be depending on the size of the workpiece,

steel engineering the steel columns displacement solution

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steel pergolas process jingta

steel pergolas indicators: structural steel, mechanical indicators including the yield point, tensile strength, elongation, low temperature impact toughness. These indicators should be consistent with the design of steel structures "requirements, but low-temperature impact toughness only the structure may work only in a low temperature environment to test steel mechanical index determination is subject to "steel mechanical and process performance test sampling requirements" (GB2975-82)

(2) Steel Chemical composition: related to the workability of the steel, toughness, durability, etc., which is a limit content of the carbon content, the content of alloying elements, and sulfur, phosphorus and other impurity elements should comply with the specification (to GB222-84) requirements.

(3) process performance: process performance include weldability and workability weldability carbon content or carbon equivalent (low alloy steel), available weldability test identification. Processing performance through cold bending test to determine (GB232-88) as a standard.

(4) geometry deviation: Dimensions of steel (steel, section steel, round steel, steel pipe) with the theoretical size of the deviation must be within the range of allowable deviation value can refer to the national standard GB709-88, GB706-88, GB787-88 , GB978-88, GB707-88, GB816-87 like.

(5) contour deficiencies of steel: the steel surface may not have bubbles, scarring, crack, cracks, folds, inclusions and pressed into the oxide scale. These defects must be clear, the depth of the depression cleared the premises shall not be greater than the thickness of the steel negative deviation value. Further, when the steel material surface corrosion, pitting or scratches and other defects, the depth is not steel pergolasgreater than the negative deviation value of 1/2 of the thickness of the steel.

(6) mechanical cutting: cutting the use of mechanical force (shearing, sawing, grinding), mechanical shearing machine, sawing machine, grinder, more suited to a 12 ~ 16mm thick steel plates or profiles straight cutting.

(7) gas cutting: the use of oxygen - acetylene, propane, liquefied petroleum gas flame heated to melt the metal, used compressed air to blow the thawing of liquid metal, so the metal cut from suitable for curve cutting and multi-head cutting.)

(8) Plasma Cutting: using a plasma arc stream to achieve cutting, and suitable for the cutting of the refractory material such as stainless steel.

(9) Thermal shaping: refers to the steel is heated to a certain temperature and then processed. This method is suitable for forming the bending and correction can not be done at room temperature of the workpiece. Termination of the thermal processing temperature not be lower than 700 ° C. The heating temperature 200 ~ 300 ℃ steel blue brittle non-hammering and bending steel carbon content exceeds the range of the low-carbon steel generally can not be subjected to heat processing.

(10) cold-forming machining: is carried out at room temperature due to an external force beyond the requirements of permanent deformation of the material yield strength of the material generates or certain parts of the ultimate strength of the material for the material requirements and materials due to an external force beyond detachment. cold working has the material harden brittle trend, and thus the steel by heat treatment to restore the normal state or planing to cut off the hardening of more serious edge portion. cold working of carbon steel of the ambient temperature is below -16 ℃ not below -12 ℃ low-alloy steel, and shall not be processed.

Bending of (11): According to the design requirements, the process of processing equipment and tooling plate or section steel bending made certain shape formed suitable for sheet metal, small steel; bending suitable for thicker plates and more complex components, steel, bending temperature at 950 ~ 1100 ℃....

On the fire resistant design method based on the structural properties of the steel structure

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New technology for steel the high corrosion coating rust

steel structure engineering before painting rust prevailing traditional methods of mechanical shot blasting and sandblasting, hand electric grinding, stay in the steel surface more than rust, rust nuclear will continue to corrosion caused by iron and steel substrates, even if very clean rust new metal surface area increase, increased absorption of water, the possibility of corrosion caused by the impact of the environmental corrosion medium. In this case, the paint coating often fail to achieve the anti-corrosion of years, even with long-term corrosion paint system construction, rust-proof time will thus be greatly reduced. Therefore, paint anti-corrosion, the key is to no longer exist to continue rusty condition of the metal surface. This article describes the structural steel engineering high corrosion coating process, mainly the main line to the patented technology, National Key New Products - JZ. CXFX-N to turn rust Vajra new material applications based on nearly two years of experience in the engineering application summary, focusing on rust years different methods of steel metal surface rust, paint coating brought before painting process changes the intrinsic quality to improve, extend, and the construction is simple, flexible application, reduce costs, save energy and reduce Pai and other interests. Innovative materials brings the advanced nature of the technology, has great application value.
Turn rust Diamond JZ.CXFX-N About JZ.CXFX-N turn rust Diamond the special function varnish of a thick liquid processing new materials as steel anti-corrosion coating surface before taking effect only for rust has a dual function of rust and rust. Coated on the surface of the corrosion of the steel member can be directly through the brush, wiping, spraying, etc. After 0.5-1 hours at room temperature, the surface of the steel rust is transformed to produce a gray-black rust substance, closely attached to the steel structure (adhesion 1) formation of high corrosion film, as the underlying can effectively improve the quality of the anti-corrosion coating paint. Dense (the film thickness of approximately half of the original thickness of the rust layer is typically a few microns, cured completely after 22 hours), insulated, completely blocked the conditions for further rust formation, and surface roughness, an indoor rust up to one year as paint underlying can significantly improve the the painting rust prevention of long-term, strengthen the capacity of heavy-duty. Good turn rust Diamond JZ.CXFX-N experience supporting the use of various paint system, with binding force, due to its rust completely rust-proof and strong, to extend all kinds of paint system preservative time limit for ordinary Antirust performance is particularly evident in the case of the construction according to specifications can be improved more than 1 times the corrosion cycle. Due to the above performance of the new materials, so that the existing problems can be solved in steel production and processing, and thus has the following construction advantages:
(1), GB8923-88 "before painting steel surface Rust grades and preparation level" standard, even if the D grade rusting steel without shot blasting, sand-blasting, can be directly spray, brush turn rust Diamond JZ.CXFX -N to achieve the purpose of the turn rust rust rust grades equivalent Sa2.5, St3 level. This has brought great convenience to the field construction of large components, construct complex node.

(2), factory production of large, complex steel components, cutting, shot blasting, welding and other processes that take a week or even a half months before entering the paint process, throw a net steel surface secondary corrosion, a direct result of The epoxy primer binding is not strong, bubbling quality defects. The use of the material rust, rust-proof function, you can completely overcome this problem. (3), hot ligation and heavy-duty steel work surface, usually covered with a layer thick-mm level and very dense and hard steel blue oxide (chemical composition Fe3O4), shot blasting sand-blasting is extremely difficult to completely clean. Fe3O4 the naturally occurring form of iron ore, stable, but after contact with air, it will slowly loose red rust oxidation generated (chemical composition of Fe2O3). Turn rust Diamond JZ.CXFX-N oxide coating, anti-rust film steel structure can be completely isolated from the air, the reach of anti-corrosion purposes. (4), fill in the steel construction process coated with rust, the late stage of the maintenance process rust off patent leather, simple clean up oil, grime, brushing the material directly, table dry after 1-2 hours can brushing paint. The material does not damage the paint, the old paint surface binding force after brushing with the new paint better.
(5), JZ.CXFX-N turn rust King Kong use the same paint, construction specification can refer to "steel anti-corrosion coating process standards (508-1996) in paint construction requirements. Due to the viscosity of the material is much smaller than the paint, and only need to steel surface wetting can, therefore, 1 kg of coverage up to 40 square meters, the material consumption is about 1/8 of the paint. (6), JZ.CXFX-N turn rust Vajra non-toxic, odorless, and does not pollute the environment, label applicable to all types of steel, cast iron, ferroalloy, only its corrosion products play a role in non-destructive steel matrix microstructure of steel no injury, Thus, the steel does not affect the mechanical properties (tensile strength, elongation, yield point, cold bending properties, impact toughness).

Discussion on construction steel pergolas fire

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On-site fabrication and installation of steel structure color steel sandwich panel

Installed at the processing site selection of colored steel sandwich plate deformation capacity of its wind should be considered in addition to considering the decorative effect. The wall board is mainly exposed to wind load deformation resistance to wind loads capability depends on the thickness of the plate, and the fulcrum spacing and support conditions. If the span is too large, colored steel sandwich board is easy to produce wind load effect Deflection impact curtain overall effect. If designed properly, but also left on the plate irreversible plastic deformation. Color steel sandwich panel, color steel sandwich panel processing steel structure and handling Caigang of sandwich panels before installation should be possible to retain the factory packaging, should be kept in indoor. Lifting equipment and heavy objects such as piling up in the outdoors, stacked locations should be smooth, no water and over should have after the board with skids booster 20cm, soft material to be placed between the board and the board, the same model The board put together each pile board should be easy to identify the board type label and cover the rain tarpaulin. Stacking space should be set the temporary Weidang, to avoid unnecessary damage to personnel moving around causing plate.

The installation of the curtain wall panel color steel sandwich panel installation general activities scaffolding, ensure the carrying capacity of the construction scaffolding, but also take into account: (1) curtain wall surface, between the work surface with the axis distance; (2) cross-references surface find the spacing and location of the control point, resistance Note TONGSHI; (3) control the reference plane to identify the installation angle of the pitch; the level difference between the (4), with the control elevation; (5) with the building vertical spacing and with each floor spacing. The carrier sheet should be two at the same time lifted, so as not to damage the surface oxide film or coating. Installing wall panels, each time only lifting the one plate, and provided by the manufacturer should be used dedicated jig in wallboard length direction of the stitching, at 2:00 lifting wallboard.

Slowly lifting process, use wind cord of control, to avoid and installed wallboard bump, scaffolding protruding parts with soft material wrapped. Sandwich panels fixed mainly two ways: one is the self-tapping screws through the wallboard directly fixed to the structure of the wall times. Another approach is a self-tapping screw through the connection member is indirectly connected to the secondary structure and wall. Curtain wall panel installation precision: the verticality of the facade 2mm, 3mm surface roughness, flatness of joints 0.5mm. Installation according to the factory to provide the technical manual strictly enforced. Weather rubber used in the fixed income side panels and flashings board with weather rubber caulking seal to prevent gas permeability and rainwater leaking. Caulking weather rubber plastic injection should pay attention to: (1) the gap between the fully clean plate to ensure that the adhesive surface clean and dry; (2) to adjust the depth of the seam, avoid trilateral dipping seam filled PVC foam materials (round bar); (3) dispensing glue seam should smooth the surface, remove the excess glue; (4) Note dispensing conservation, the glue is not completely hardened before, do not dust and planning injury. After the end of the installation closeout color steel sandwich panel curtain wall installation, top to bottom, layer by layer to tear up the the wallboard surface of protection film layer synchronization Dismantling. steel structure should pay attention to protect the wallboard, not bumps, scratches, and finally completed the entire curtain wall works. The impact of construction to the curtain wall and curtain wall components such as surface decoration adhesive material should be immediately removed.

Curtain wall project after the installation is complete, from top to bottom cleaning solutions should be developed to prevent surface decoration exception occurs. Neutral detergent for cleaning the wall panels should be tested to prove that no corrosion on the the wallboard surface of coating. Mild detergent should be washed with water. Color steel sandwich panel curtain wall maintenance and maintenance of the curtain wall system must carry out regular cleaning and maintenance, generally at least once a year for a routine check, and to identify potential problems and to maintain the appearance of its surface and extend the service life. Cleaning the surface must be careful not to scratch the surface occurs phenomenon, avoid the use of bleaching ingredients and the abrasive-containing washing liquid, steel balls, grinding tools, etc., end washing to use clean water from top to bottom to rinse the surface. If the wall surface is damaged, should be promptly repaired, the underlying processing by the underlying cleaning, except oil patch at the top of defects,  the find equal process in steel structure to ensure the top of the formation, the putty should be at least full scraping 2 times. Brushing coating brush primer before, the topcoat should brush at least 2 times. The complex fill putty and sanded processing should be performed after each pass topcoat refers dry, and wipe with a damp cloth buoyancy on the film, then brushing under 1 times. Coating trim include polished, polishing and other processes, surface water should be used sandpaper, polishing clean soft cloth dipped in sand wax should be used to wipe the surface polished.

The course of development of the steel building system
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The VSR future and its effect-jingta

Vibration Stress Relief future and it is the effect of VSR can be regarded as an additional stress in the form of a cyclic load applied to the parts. Known engineering materials used is not an ideal elastic body, the interior of the existence of different types of micro-defects, the cast iron is the existence of a large number of shapes of cutting the metal body of the graphite.Therefore whether it is steel, cast iron or other metal, microscopic defects in the vicinity there are varying degrees of stress concentration. When subjected to vibration, the alternating stress applied to the parts on the parts of the residual stress is superimposed. When stress superposition results reach a certain value, the most serious part of the stress concentration will exceed the yield limit of the material is plastically deformed. This plastic deformation reduced there residual stress peak and reinforced metal matrix. 

Then, vibration in others stress concentrated to produce the same effect on the more serious part, until the vibration of additional stress and residual stress superimposed algebra and can not cause any plastic deformation of the parts of the date at this time, will no longer generated to eliminate vibration and homogenized role of residual stress and strengthen the metal. Less investment in the production cycle is short and easy to use, emissions and radiation pollution save energyVibration Stress Relief reduce the cost of research and practical application proved that the the VSR workpiece aging effect in coal, heavy oil or gas heat aging furnace, basic and electric furnace similar aging effects, not only because the VSR overcome the uneven heat aging furnace caused to eliminate stress non-uniformity of the problem, and to avoid the the workpiece heating and reduce the impact of its resistance to deformation, so the general processing of the workpiece by the VSR than the average The dimensional stability of the thermal aging treatment of the workpiece can be increased above 30%. VSR equipment technology is not the venue, with the people improve environmental requirements, thermal aging furnaces flue gas, dust, slag problems have restricted VSR can completely avoid VSR technology countries have been to promote the cause Blind hole for Residual Welding Stress Elimination http://steelpergolas.blogspot.com/2012/12/blind-hole-for-residual-welding-stress.html