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我厂产品上的关键件,脱落插头是酚醛玻璃纤维压塑料和磷青铜的组合件.由于酚醛玻璃纤维压塑料电解除油时(温度为80°C),塑料表面亮膜遭到腐蚀后失去光泽变黑.以前我厂一直采取磷青铜插针先镀银后塑压的工艺方法.此工艺方法由于插针基体材料本身厚薄不均,(国家标准为1_(0.07)~(+0))而塑压上下模间隙固定不变.因而镀银后的插针在塑压过程中呈现出基体材料较厚的插针银层被模具划伤,而材料较薄的银层上复盖一层塑料.由于以上原因,造成该产品的合格率只有25.6%.为了提高产品质量,增加企业经济效益,我们在1986年进行攻关,选用了一种新的工艺方法,经过一年多的生产应用,效果良好.
I plant the key components of the product, off the plug is a combination of phenolic glass fiber pressure plastic and phosphor bronze. Phenolic glass fiber pressure plastic electrolytic degreasing (temperature of 80 ° C), the plastic surface of the film was lost after corrosion Luster black. Before I plant has been to take phosphor bronze pins silver plated plastic pressure process. This process as a result of the uneven thickness of the pin matrix material itself (the national standard 1_ (0.07) ~ (+0)) While the plastic mold is fixed on the gap between the upper and lower mold.Therefore, after the silver plated pins in the plasticization process shows a thick substrate needle silver layer is scratched by the mold, and thinner layer of silver material covered Plastic. Due to the above reasons, resulting in the passing rate of the product is only 25.6%. In order to improve product quality and increase economic efficiency of enterprises, we conducted a research in 1986, chose a new process, after more than a year of production and application, Good effect.