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目前国内外中、小内燃机普遍都采用铝合金活塞,铝合金有质量轻的优点,同时也带来了导热性能高和易磨损的缺点,现就这些问题提出一些措施供参考。 一、限制活塞头道环槽磨损的方法 国外普遍采取在活塞头道环槽镶嵌奥氏体耐磨铸铁环槽,我国近年来也有的活塞采用。据英国Wellaca ArnoldTours公司报导,活塞运行三年后几乎未发现磨损,该活塞使用寿命为一般活塞的两倍以上,特别在高速中型活塞设计时
At present, the domestic and foreign small and medium-sized internal combustion engines generally use aluminum alloy pistons. The aluminum alloy has the advantages of light weight, but also brings the disadvantages of high thermal conductivity and easy wear. Some measures for these problems are put forward for reference. First, limit the piston head ring groove wear method abroad generally adopted in the piston head ring groove inlaid austenitic wear-resistant cast iron ring groove, our country in recent years, and some piston used. According to the British Wellaca ArnoldTours company reported that almost three years after running the piston found no wear and tear, the piston life of more than double the average piston, especially in high-speed medium-sized piston design