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我厂用巴格利漆(即酚醛清漆,俗名电木清漆)修复了许多因气孔针孔而报发的铸件,初步获得成功。对于经受不住水压或气压试验的铸件,如果表面出现的不是液体细流而是一些小的液滴时(俗称冒汗),则用巴格利漆修补最为有效,因为巴格利漆受热时析出酒精甲苯,留在铸件孔隙中是细致坚硬的电木。它在300C以下是稳定的,故可修补工作温度在180℃以下(有时还可略高一些)的铸件。在海水、淡水、石油及其他油类或蒸汽中工作的铸
I plant with Bagley paint (ie, novolak, commonly known as bakelite varnish) to repair many of the holes due to stomatal castings reported, the initial success. For castings that can not withstand hydraulics or barometric pressure, repair with Barrett paint is most effective if the surface does not show fine liquid but some small droplets, commonly known as sweating, Toluene alcohol precipitation, leaving the pores in the casting is hard and delicate bakelite. It is stable below 300C, it can repair the working temperature below 180 ℃ (and sometimes slightly higher) castings. Castings that work in sea water, fresh water, petroleum and other oils or vapors