Abstract: The ratio of gauge of 0.80~1.20 mm cold- rolled 304 stainless steel - carbon steel(Q235A,08Al)-304 stainless steel clad plate produced by “exploding + rolling” process is 1:10:1. The clad plate has nice market prospect in building gate, window screen wall and cooker commodity field. The results of analysis on cold bending crack of clad plate sample showed that the probability of occurred crack with base plate of higher carbon content (0. 16%C) Q235A steel was greater than that with base plate of lower carbon content (0.06% C)08Al steel, the bending performance of cold- rolled clad plate was influenced by inclusion in steel, grain size and heat treatment of steel. The bending performance of cold- rolled clad plate was obviously improved by using 08Al steel as base plate, controlling 1050 ℃ heat treatment process to get grain size rating≤8 .

摘要： 通过“爆炸+轧制”法生产的0.80～1.20mm的304不锈钢碳钢(Q235A,08Al)304不锈钢复合板的厚度比例为1∶10∶1,该板在建筑门窗幕墙和日用炊具领域有广泛应用前景。冷弯试样产生裂纹的分析结果表明,基板含碳量高的Q235A钢(0.16%C)比基板含碳量低的08Al钢(0.06%C)出现裂纹的几率大,并且钢中夹杂物、钢的晶粒度和热处理工艺均影响冷轧复合板的弯曲性能。通过选择08Al钢为基层板,控制1050℃热处理工艺,使晶粒度级别≤8级,可明显改善冷轧复合钢板的弯曲性能。

关键词: 碳钢-304不锈钢-碳钢复合板, 弯曲裂纹, 碳含量,晶粒度