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我厂生产各种工业用缝纫机针,机针的表面要求镀铬,以提高机针的耐磨性和得到良好的防锈能力。机针是两端尖形的细长杆件,如图1所示。过去采用两种方法进行吊镀:图2用铜皮顶紧两端,针尖易起毛,在缝纫时会破坏缝料的纤维;图3用铜皮套住针的喇叭口并顶紧后尖,在喇叭口处有部分与铜皮接触,因此无镀层,所以该处易生绣,影响机针外观。针对以上缺点,我厂发动群众大搞技术革新,试制成磁力电镀挂具,从而解决了质量关键。
I plant a variety of industrial sewing machine needles, needle surface requirements of chrome, in order to improve the wear resistance of the needle and get a good anti-rust ability. The needle is an elongated bar at both ends of the needle, as shown in Figure 1. In the past, there are two methods for hanging plating: Figure 2 with copper top tight ends, the needle easy to fluff, sewing will destroy the sewing material fibers; Figure 3 with copper sleeve trumpet bell mouth and tight top, In the bell mouth part of the copper skin contact, so no coating, so the Department of Health embroidery, affecting the needle appearance. In view of the above shortcomings, I mobilize the masses to engage in technological innovation, trial-made magnetic plating rack, thus solving the quality key.