摘要
为了获得高性能的电镀金刚石锯丝,实验研究了悬砂法制备表面磨粒群螺旋排布锯丝的电镀工艺,分析了预镀阴极电流、上砂阴极电流密度与上砂时间对锯丝复合镀层外观质量与锯丝表面磨粒分布情况的影响规律,并采用试制锯丝进行了锯切实验。研究结果表明,镀底层的阴极电流密度为5.0A/dm2时,镀层与钢丝基体表面有着良好的结合强度;上砂阶段采用阴极电流密度为5.0A/dm2,其电镀时间为7-8min,可得到良好的镀层和磨粒分布效果。钢丝基体预镀前在表面绕绝缘线,合理地选择工艺参数可以获得磨粒群在钢丝基体表面螺旋排布的基本结构,试制的新型锯丝在锯切中具有良好的容屑与排屑效果。
In order to obtain high performance electroplating diamond wire saw？ experimental studies are conducted for devel-opment of grits-spiral-distribution electroplated diamond wire saw using sand-suspend electroplating method. The influences of pre-plating cathode current density, grits electro-embedding cathode current density and time on composite deposite coating appearance and grits distribution of wire saw are analyzed, and the sawing experiment is carried out by using the trial wire saw. The results show that good bonding strength between the coating and the steel wire can be obtained when the adopted cathode current density is 5. 0 A/dm2 at pre-plating stage; good coating and girts distribution can be obtained when the adopted cathode current density is 5. 0 A/dm2 and the electroplating time is 7-8 min at grits electro-embedding stage. By winding insulation wire on the surface of steel wire and reasonably selecting technological parameters before pr^ plating can make the diamond wire saw with grits-spiral-distribution on surface, and the new type of wire saw has a better crumbs-clearing effect in wire sawing process.
出处
《河北科技大学学报》
CAS
2016年第6期527-532,共6页
Journal of Hebei University of Science and Technology
基金
国家自然科学基金(51205234)
山东省重点研发计划项目(2016GGX103007)
山东省自然科学基金(ZR2014EEM034)
关键词
电镀
磨削工具
电镀金刚石锯丝
复合电镀
悬砂法
磨粒群螺旋排布
electroplating
grinding tools
electroplated diamond wire saw
composite electroplating
sand-suspend method
grits-spiral-distribution
