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彩涂板钢种你知道吗

发布者:唐山天物彩板有限    发布时间:2020-03-05 16:34

彩涂板钢种你知道吗

河北彩钢卷品牌国内彩涂钢板用户对钢板品牌关注较少。由于国内大部分彩涂钢厂只有一种钢材,即dc51(因为采购的热轧钢板或硬盘管基本上是钢),一些彩涂钢厂尝试在热镀锌生产线上生产全硬钢(s 550)或高强度钢(s 350等)。基体的质量和化学成分难以控制,质量稳定性差。稳定性差会导致模板性能大幅度波动,导致模板性能恶化。
对于建筑物,承载力(风荷载、雪荷载、施工人员和机械)、建筑跨度、檩条间距设计等均取决于钢板的强度。对于彩涂铝镀锌板的维修结构,国外有相应的标准。例如美国的TM 653、美国的ASTM 792、日本的JISG 3302、欧洲的JISG 3321、en 10215和en 10147等。
钢分为CQ(一般商业级)、DQ(一般冲压)、HSS(高强度结构钢)和FH全硬钢。
CQ(一般商业级):宝钢生产的TST 01z、tdc51、tsgcc等常用产品。涂层前屈服强度在260-320兆帕之间。彩色涂层后,如果基体为铝镇静钢,其极限强度将得到提高,并伴随着延伸率的劣化。钢的抗拉强度为350-400mpa,屈服比略高于结构钢。
河北彩钢卷品牌DQ(通用冲压):由于通用建筑彩钢板为滚弯或复合夹层,材料的冲压性能不高,因此在建筑领域很少使用(除了一些门窗彩钢板)。
高强度结构钢(HSS):根据欧洲标准,HSS可分为四种不同强度的钢。普通CQ级钢的屈服强度分别为280mpa和345mpa。宝钢生产的TS 280 GD和ts350gd是两种钢。与普通CQ相比,HSS钢具有以下优点:1。由于屈服强度低,具有良好的耐火和抗震性能;对于较厚的钢板,可生产大跨度拱板;一般外墙和屋面板可比CQ材料薄,节省材料消耗。全硬钢:通过控制退火温度来提高钢板屈服强度的钢。按国际标准,屈服强度≥550MPa,抗拉强度≥570Mpa。这种材料强度高,延伸率低。它适用于浅钢板的使用,大大节省了材料的使用。它也是各国开发的一种钢材。国外标准也引进了高强度、高塑性的材料。低合金高强度钢(HSLA)是一种在炼钢过程中加入强化合金元素的钢,但由于其强度高,在钢铁工业中得到了广泛的应用。由于低合金钢的还原率只能在轧制过程中提高,低合金钢很少用作薄壳结构的彩涂板(另一个缺点是成本高)。
 
为了保证彩涂钢板最终产品的形状,钢板的强度等级和压型钢板的形状与加工机械密切相关。


Domestic color coated steel plate users pay less attention to steel plate brand. Since most of the domestic color coated steel plants only have one steel, namely dc51 (because the purchased hot-rolled steel plate or hard disk tube is basically steel), some color coated steel plants try to produce all hard steel (s 550) or high-strength steel (s 350, etc.) on the hot-dip galvanizing production line. The quality and chemical composition of the matrix are difficult to control, and the quality stability is poor. Poor stability will lead to large fluctuations in the performance of the template, resulting in deterioration of the performance of the template.
 
For buildings, bearing capacity (wind load, snow load, construction personnel and machinery), building span, purlin spacing design, etc. all depend on the strength of steel plate. For the maintenance structure of color coated aluminum galvanized sheet, there are corresponding standards abroad. For example, TM 653 in the United States, ASTM 792 in the United States, JISG 3302 in Japan, JISG 3321, en 10215 and en 10147 in Europe, etc.
 
Steel is divided into CQ (general commercial grade), DQ (general stamping), HSS (high strength structural steel) and FH all hard steel.
 
CQ (general commercial grade): common products such as TST 01z, tdc51 and tsgcc produced by Baosteel. The yield strength before coating is between 260-320 MPa. After the color coating, if the matrix is aluminum killed steel, its ultimate strength will be improved, accompanied by the deterioration of elongation. The tensile strength of steel is 350-400mpa, and the yield ratio is slightly higher than that of structural steel.
 
DQ (general stamping): as the general construction color steel plate is roll bending or composite sandwich, the stamping performance of the material is not high, so it is rarely used in the construction field (except for some door and window color steel plates).
 
High strength structural steel (HSS): according to European standards, HSS can be divided into four kinds of steel with different strength. The yield strength of common CQ grade steel is 280mpa and 345mpa respectively. TS 280 GD and TS 350 GD produced by Baosteel are two kinds of steels. Compared with common CQ, HSS steel has the following advantages: 1. Due to the low yield strength, it has good fire resistance and seismic performance; for thicker steel plate, it can produce large-span arch plate; generally, the outer wall and roof plate can be thinner than CQ material, saving material consumption. All hard steel: steel that improves the yield strength of steel plates by controlling the annealing temperature. According to international standards, yield strength ≥ 550MPa, tensile strength ≥ 570Mpa. This material has high strength and low elongation. It is suitable for the use of shallow steel plate, greatly saving the use of materials. It is also a kind of steel developed by various countries. Foreign standards have also introduced materials with high strength and plasticity. Low alloy high strength steel (HSLA) is a kind of steel with strengthening alloy elements in the process of steelmaking, but because of its high strength, it has been widely used in the steel industry. Because the reduction rate of low alloy steel can only be increased during rolling, HSLA steel is rarely used as the color coating plate of thin shell structure (another disadvantage is high cost).
 
In order to ensure the shape of the final product of the color coated steel plate, the strength grade of the steel plate and the shape of the profiled steel plate are closely related to the processing machinery.
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