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 stain-less and iron scrap and shearing and tensile experiments to test the performance of the composite plate,the current study inves-tigated the effect of hot-rolling process on the properties of stainless steel/iron scrap clad plate. The results show that the rea-son 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 stain-less steel and iron. Adding graphite powder in the iron scraps can improve the mechanical properties of materials and im-prove the tensile and shear strength of the after-test sample,but the elongation will be reduced.
参考文献
| [1] | 黄导;陈丽云;张临峰;李全功;李煜.推进节能环保技术管理升级促进钢铁工业绿色转型[J].钢铁,2015(12):1-10. |
| [2] | 高亚男;张艳菊;郝瑞朝;李金勇;肖宏.热轧工艺对不锈钢/铁屑芯包层钢筋性能的影响[J].钢铁研究学报,2013(11):42-48. |
| [3] | 肖宏;高亚男;赵铁勇.铁屑材料压制工艺及性能研究[J].材料科学与工艺,2011(1):65-70. |
| [4] | H. Amini Mashhadi;A. Moloodi;M. Golestanipour;E. Z. V. Karimi.Recycling of aluminium alloy turning scrap via cold pressing and melting with salt flux[J].Journal of Materials Processing Technology,20097(7):3138-3142. |
| [5] | Z. Sherafat;M.H. Paydar;R. Ebrahimi.Fabrication of Al7075/Al, two phase material, by recycling Al7075 alloy chips using powder metallurgy route[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20091/2(1/2):395-399. |
| [6] | 宋强;孙建波.钢铁切屑在冲天炉中的利用[J].铸造设备研究,2002(5):11-17. |
| [7] | 黄一远;罗俊.熔炼钢铁屑的热风单风口冲天炉[J].装备制造技术,2005(1):46-49. |
| [8] | Yasumasa Chino;Koji Shimojima;Hiroyuki Hosokawa.Solid-state recycling from machined scraps to a cellular solid[J].Journal of Materials Research,200211(11):2783-2786. |
| [9] | Yasumasa Chino;Hajime Iwasaki;Mamoru Mabuchi.Solid-state recycling for machined chips of iron by hot extrusion and annealing[J].Journal of Materials Research,20045(5):1524-1530. |
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