纳米MoS_2轧制液摩擦特性与轧后钢板表面研究  

Tribological properties of strip rolling liquid with nano MoS_2 and its effect on surface of the rolled steel plate

作　　者：王冰[1] 孙建林[1] 武元元[1] 王一助[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《材料科学与工艺》2011年第6期28-32,38,共6页Materials Science and Technology

基　　金：国家高技术研究发展计划(863)资助项目(2009AA03Z339)

摘　　要：为减少传统冷轧乳化液在轧制过程中油污污染,提高带钢表面质量,采用物理和化学方法将纳米MoS2分散在水基轧制液中替代传统极压抗磨剂添加剂,在四球摩擦磨损试验机上进行摩擦学性能实验.通过冷轧实验,考察了纳米MoS2在轧制过程中对润滑性能的影响;使用接触角测量仪检测了该轧制液的润湿性能,并通过轧后带钢表面粗糙度分析,研究了纳米粒子的添加对轧后带钢表面质量的影响,并对其在冷轧润滑过程中的作用机理进行初步探讨.研究表明:含纳米MoS2水基轧制液与通用乳化液的PB值相同,但其摩擦系数与磨斑直径与乳化液相比分别降低1.4%和17.7%,表现出良好的抗磨损性能,同时,改善了润湿性能以及冷轧过程中的润滑性能;从板面质量来看,表面轧制纹理清晰,划痕少而浅,结合粗糙度曲线及EDS能谱分析,表明纳米粒子能够填充在带钢表面"犁沟"处,减少了磨损和缺陷的发生,从而有效提高了后带钢表面质量.To reduce oil pollution and improve surface quality of strip during cold rolling,physical and chemical methods were used to disperse MoS2 nanoparticles into water-based rolling solution,and tribological properties experiment were carried out on four-ball friction machine.Cold rolling test was designed to evaluate the effect of nano MoS2 on lubrication properties in rolling process.The wetting properties of the rolling liquid were detected on contact angle measuring device,and the surface roughness of the rolled strip was analyzed.The influence of nanoparticles on the surface quality and its mechanism were studied.The results showed that nano MoS2 water-based rolling liquid had the same PB value with the general emulsion,but compared with the emulsion,the friction coefficient and wear scar diameter decreased 1.4% and 17.7%,respectively.The liquid showed well wear resistance properties,and its wettability and lubricity in cold rolling process were also improved.The rolling texture of strip surface was clear and fewer and the surface scratches were less and shallow.According to roughness curve and EDS,nanoparticles could fill ＂ditch plough＂ department of the surface and effectively reduce the incidence of wear and defects.

关 键 词：冷轧 NANO-MOS2 润滑性能 磨损 润湿 

分 类 号：TG335.12[金属学及工艺—金属压力加工]