松孔镀铬层应用于受重压的滑动摩擦件及耐热、抗蚀、耐磨零件，如内燃机汽缸内腔、活塞环等。
Loose hole plating chromic layer by weight used in the sliding friction parts and heat resistance, corrosion, wear parts, such as internal combustion engine cylinder lumen, piston rings.
概要介绍桑塔纳球墨铸铁活塞环镀铬工艺的原理和改进过程。
The basic principle and the improvement of Santana spherical cast iron piston ring chromium plating technology is briefly introduced.
活塞环镀铬层有裂纹和块状剥落。
There appear cracks and chunk peelings in the chrome-plated layer of these piston rings.
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