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我厂生产的铸铁件缸体和缸盖,在加工后水压检查时约有15～20％的铸件因漏水而报废。为此,自1978年开始,发动机厂就试验堵漏工艺,到目前堵漏零件已装车万辆以上,末发生过任何质量事故。我们使用的循环堵漏剂,系四川晨光化工院出产。主要成分为水玻璃、金属氧化物粉末和含胶有机物等三部分,呈棕红色的粘稠状。按1:3～4的比例配水,加热至80～90℃,或配热开水亦可。方法是:将清洗干净的补漏零件,用水泵压入堵漏液,或用压缩空气预压,使其保持5kg/cn~2以上的压力,持续30分钟,取下凉干后即成。
I plant the cast iron cylinder and cylinder head, check the water pressure after processing about 15 to 20% of castings scrapped due to leakage. To this end, since 1978, the engine plant on the plugging process tested until now plugging parts have been loaded million or more, at the end of any quality accidents. Cyclic plugging agent we use is produced by Sichuan Chenguang Chemical Industry Institute. The main components of water glass, metal oxide powder and organic matter containing three parts, was brown red viscous. According to the ratio of 1: 3 ~ 4 with water, heated to 80 ~ 90 ℃, or with hot water can be. The method is: clean the parts of the trapping leaks, water pump into the plugging fluid, or pre-compressed air pressure to keep it 5kg / cn ~ 2 more pressure for 30 minutes, remove the dry Serve.