热轧工艺对不锈钢包覆铁屑复合板性能的影响  

Effect of hot-rolling process on properties of stainless steel/iron scrap clad plate

作　　者：许秀梅[1] 解芃芃 肖宏[1] 谢红飙[1] 张少坤 

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程技术研究中心,河北秦皇岛066004 [2]一重集团大连设计研究院,辽宁大连116600

出　　处：《钢铁》2016年第9期57-62,共6页Iron and Steel

基　　金：河北省自然科学基金资助项目(E2013203277)

摘　　要：为了研究不锈钢与铁屑的复合性能,采用热轧方式,利用金属固态回收理念制备不锈钢包覆铁屑复合板。通过金相显微镜对不锈钢与铁屑的接触界面进行分析,采用剪切试验及拉伸试验对复合板进行性能测试,研究了热轧工艺条件对不锈钢和铁屑复合性能的影响。研究结果显示,较大单道次压下量仍未使两金属复合的原因是大压下量并不能使铁屑间孔洞完全消失,铁屑在宽展方向仍有流动空间。但当单道次压下量较小而累积压下量达到17 mm时,试件剪切强度为225 MPa,已达到国家规定。因此,一定的累积压下量是影响不锈钢与铁屑复合的关键因素之一。在铁屑中添加石墨粉可以改善材料的力学性能,提高轧后试件的抗拉强度和剪切强度,但会降低其伸长率。In order to study the properties of stainless steel and iron scrap, the stainless steel/iron scrap clad plate was hot-rolled by using solid metal recycling concept.Through metallographic observation to analyze the interface between stainless and iron scrap and shearing and tensile experiments to test the performance of the composite plate, the current study investigated the effect of hot-rolling process on the properties of stainless steel/iron scrap clad plate. The results show that the reason why the large single pass quantity does not make two metals be composite is that the high pressure cannot completely make the holes among iron scraps disappear. The iron scraps still have flowing space in spread direction. But when the single pass reduction was smaller and the accumulated amount reached 17 mm, its shear strength was at 225 MPa, which reaches the national standard. Therefore, a certain accumulated amount is one of the key factors affecting the composite of stainless steel and iron. Adding graphite powder in the iron scraps can improve the mechanical properties of materials and improve the tensile and shear strength of the after-test sample, but the elongation will be reduced.

关 键 词：铁屑 固态回收 轧制工艺 不锈钢 

分 类 号：TG335.81[金属学及工艺—金属压力加工]