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宝钢每年要生产普通(CQ)、深冲(DQ)、特深冲(DDQ)冷轧带钢160万吨。这些低碳冷轧板主要用于制造汽车和家具,要承受冲压,因此需有一定的冲压成型性能。用户调查表明,目前国内产品无论其冲压性能或表面质量均不及国外同类产品,而在国外产品中则又以日本钢板更受欢迎,其CQ级别的钢板(SPCC)常被升级作DQ甚至DDQ级别的钢板使用。为了摸清进口深冲板的实际质量,我们收集了近期进口的10种不同样品,从化学成分、金相组织、力学性能到晶体织构进行了全面的试验检查。我们还检验了鞍钢特深冲08AL(ZF08AL),进行对比。通过这项试验研究,我们对进口冷轧低碳钢板的质量有了较全面的了解,对于宝钢做好引进国产品标准的转化工作,制定出内控标准具有重要的现实意义。试验中得到物理、冶金数据也为国内生产厂和用户提供了参考数据。
Baosteel will produce 1.6 million tons of ordinary cold rolled (CQ), deep drawn (DQ) and special deep-drawn (DDQ) cold rolled strip steel annually. These low-carbon cold-rolled plates are mainly used in the manufacture of cars and furniture, to withstand stamping, it is necessary to have some stamping formability. User surveys show that the current domestic products, regardless of their stamping properties or surface quality are not foreign similar products, while in foreign products and Japanese steel plate is more popular, its CQ-level steel (SPCC) are often upgraded to DQ or DDQ level The use of steel. In order to find out the actual quality of the imported deep drawing board, we collected 10 different samples recently imported, and conducted comprehensive tests on the chemical composition, microstructure, mechanical properties and crystal texture. We also tested the Ansteel special deep red 08AL (ZF08AL), for comparison. Through this pilot study, we have a more comprehensive understanding of the quality of imported cold-rolled low-carbon steel sheets. It is of great practical significance for Baosteel to carry out the work of transforming the national product standards into the country and formulating the internal control standards. The physical and metallurgical data obtained from the experiment also provide reference data for domestic production plants and users.