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利用高功率密度激光束在铬钼铜合金铸铁活塞环外圆表面进行2～3次熔化凝固处理,产生2～3道硬化带,再经喷丸、衍磨、浸油等工艺,即可装机。激光熔化凝固处理的东风型10L207E 柴油机及16V280柴油机活塞环,经磨损试验及装机运行21万公里考核证明,铬钼铜合金铸铁激光环的耐磨性、抗腐蚀性显著提高,尤其是对钒钛铸铁缸套磨损更少,使用寿命延长一倍以上。激光环与钒钛铸铁缸套是较理想的一对摩擦副。
Using high-power density laser beam on the outer surface of chromium-molybdenum-copper-alloy cast iron piston ring 2 to 3 times melt solidification, resulting in 2 to 3 hardened zone, and then by shot blasting, grinding, immersion oil and other technology can be installed . Laser melting and solidification of the Dongfeng 10L207E diesel engine and 16V280 diesel piston rings, the wear test and installation of 210,000 km examination proved that chromium-molybdenum-copper alloy cast iron laser ring wear resistance, corrosion resistance significantly improved, especially for vanadium titanium Cast iron cylinder liner wear less, more than double the service life. Laser ring and vanadium titanium cast iron cylinder liner is an ideal pair of friction pair.