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轨道接续线塞钉生产,过去先经过锻冲下料,后用车床加工,效率低,次品率较高,且需占用三台C620车床和一台立式钻床、八个人连续干7~8个工作日,月产仅两万颗,远远不能适应运输生产需要。北京铁路局电务器材厂职工采用无屑加工冷冲工艺,仅以一台冲床,二人作业连续干7~8个工作日,即可达月产两万颗。用硬质合金冲模加工,表面光洁度提高到▽_7,产品规格尺寸全部达到工艺要求,没有次废品。为了改善环境条件,提高接续线质量,对酸洗挂锡工序进行了技
Track follow the plug nail production, the past after the first forging blanking, after the lathe processing, low efficiency, high defective rate, and the need to occupy three C620 lathes and a vertical drilling machine, eight people in a row dry 7 to 8 A working day, only 20,000 per month, far from being able to adapt to transport needs. Beijing Railway Bureau Electric Equipment Factory workers use chipless processing cold red process, only a punch, two jobs for 7 to 8 consecutive days dry work, up to 20,000 per month. With carbide die processing, surface finish increased to ▽ _7, product specifications and dimensions all meet the technical requirements, there is no secondary waste. In order to improve the environmental conditions and improve the quality of the connecting line, the process of pickling and tinning was carried out