正交试验法优化ML20MnTiB精线表面磷化质量的工艺研究

Process Research on Optimization of the Surface Phosphating Quality of CHQ ML20MnTiB by Orthogonal Test

为了提升ML20MnTiB精线表面磷化膜的质量,满足客户大变形多工位高速冷成型需求,采用正交试验方法研究了不同酸洗拉拔工艺对ML20MnTiB合金钢丝磷化膜的膜重、SEM形貌和成分的影响。结果表明:第3次抽丝不酸洗,采用凯密特尔工艺磷化,控制精抽变形量为10%时,获得的表面磷化膜最重、磷化有益成分最高、微观形貌最为理想,更符合冷加工成型工艺要求。

Aiming at improving the surface phosphating quality of CHQ ML20MnTiB and meeting to the needs of customers for large deformation multi station high speed cold processing molding technology,the effects of different pickling and drawing processes on phosphating film weight,SEM morphology and composition of alloy steel wire ML20MnTiB were studied by orthogonal test.Results showed that under the conditions of the second-time wire extraction without acid pickling,chemetel phosphating and fine extraction deformation by 10%control,the obtained surface phosphating skin film possessed the maximum weight,the highest phosphating beneficial components and the optimal micro morphology,which could satisfy the requirements of cold processing molding technology.