摘要
使用扫描电镜观察和分析了滚压不锈钢钢管成型模具的表面磨损特性和形貌,分析了粘着磨损的形成机理,在Cr12MoV模具钢上电刷镀制备了具有良好自润滑性和减磨性能的In和Cu镀层作为工作层,而基层电刷镀了具有高硬度、高耐磨性的Ni-W(D)镀层,形成了In及Ni-W(D)和Cu及Ni-W(D)复合镀层,把这2种复合镀层分别与1Cr18Ni9Ti奥氏体不锈钢进行了磨损对比试验分析,同时使用扫描电镜观察和分析了这2种复合镀层的表面磨损特性和形貌。结果表明,Cu及Ni-W(D)复合镀层在磨损试验的前150min磨损失重明显,磨损失重率达到0.105%,但仍具有一定的抗粘着磨损能力。而In及Ni-W(D)复合镀层磨损失重很小,磨损失重率仅为0.024 6%,显示出了在加工强度较高的不锈钢件时具有更为优良的抗粘着磨损性能。最终采用电刷镀In及Ni-W(D)复合镀层修复了模具,使模具的抗粘着磨损能力及综合耐磨性得到了明显提高,模具使用寿命得到了延长,取得了良好的经济效益。
The worn surface character and morphology of the stainless steel forming mould are observed and analyzed with a scanning electron microscope. The formation mechanism of adhesive wear is analyzed. To prepare the In and Cu work coating with the self lubrication and antifriction on Cr12MoV steel by brush plated, The Ni-W（D） coating with high hard- ness and good abrasion resistance is used as a basic coating, forming In/Ni W（D）and Cu/Ni W（D） composite coating. The results of the worn test for composite coating and austenitic stainless steel are analyzed. The worn surface character and morphology of the composite coating are observed and analyzed with a scanning electron microscope. The results indicate that the wear mass loss is obviously for theCu/Ni-W（D） composite coating before 120 min. The mass loss rate is 0. 105%, but it has some ability of adhesive wear resistance. The mass loss rate of the In/Ni-W（D） composite coating is 0. 024 6%. This composite coating shows the better property of the abrasive resistance when the work-piece with high strength and strain hardening. The mould is repaired by brushing the In/Ni W（D） composite coating. The adhesive wear resistance and the life of mould are improved obviously. The good economic benefit is obtained.
出处
《新技术新工艺》
2016年第3期84-87,共4页
New Technology & New Process
基金
广州航海学院创新强校工程建设项目(特色创新类)(201414B06)
