我厂是全国造锁行业的拳头厂家,生产的铜挂锁畅销于世界一百多个国家和地区,深受广大用户的喜爱。 我厂铜挂锁的牌号原为ZHPb59—1,在生产中,我们发现铸造毛坯在机加工过程中常常会出现蜂眼、刀纹粗、粘刀等现象,严重地影响了产品质量。针对这一情况,我厂自1985年开始进行试验,以提高铅黄铜的机械加工性能,并取得了成功。 在铅黄铜中,唯一能够改善合金的机械 Our factory is the fist manufacturer in the lock manufacturing industry in China. The copper padlocks are well sold in more than 100 countries and regions in the world and are deeply loved by the customers. Our factory copper padlock brand was originally ZHPb59-1, in the production, we found that casting rough in the machining process often appear beehives, knife thick, sticky knife and other phenomena, seriously affecting the product quality. In response to this situation, I plant since 1985 to carry out tests to improve the mechanical properties of lead-brass, and achieved success. In lead brass, the only machine that can improve the alloy