电镀金刚石线锯的基线镀前脱除缺陷黄铜保护镀层技术的研究

Research on the Technology of Removing Defective Brass Protective Layer before the Baseline Plating for Electroplating Diamond Wire Saw

以镀铜碳钢丝为基线,在其表面电镀镍与金刚石复合层制成金刚石线锯,用于高硬脆材料的切割。线锯高速切割时易发生扭转,若所镀复合层与基线结合力不佳则易分层导致线锯报废。现有技术制备的线锯存在复合层与基线结合力不适合高速切割的缺陷。在探讨其成因的基础上,设计了物理法基线镀前脱除缺陷黄铜保护镀层工艺和装置,可选择性脱除缺陷黄铜镀层,用于制备电镀金刚石线锯。结果表明:该技术可脱除基线表面的缺陷黄铜镀层,提高复合层与基线的结合力,制备的金刚石线锯可满足扭转、折断和破断试验的要求,适合高速切割。

The diamond wire saw is made by electroplating nickel and diamond composite layers on the surface of carbon steel baseline with copper coated,which is used for cutting high hardness and brittleness materials.The wire saw is prone to twisting during high-speed cutting,If the bonding force is poor between the composite layer and the baseline,it is easy to delaminate and cause the wire saw to be scrapped.The existing technology for preparation the wire saws has the defect that the bonding force between the composite layer and the baseline is not suitable for high-speed cutting.On the basis of exploring its causes,it was designed that the physical device for removing defective brass protective coatings before baseline plating.the device is used to selectively remove defective brass coatings and prepare electroplated diamond wire saws.The results show that this technology can remove the brass coating with defects on the baseline surface,improve the bonding force between the composite layer and the baseline,and produce diamond wire saw that can meet the requirements of torsion and breaking tests,and be suitable for high-speed cutting.