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概述 我厂自82年以来,开始对高强度活塞环材质的研究,现已初步完成了筒体铸态珠光体钒钛高强度球墨铸铁环材质的研制,其材质性能为:铸态抗弯强度> 100kgf/mm~2,弹性模数≥15.000kgf/mm~2,硬度99～110( HRB),热稳定系数>92％,线热涨系数<11× 10~(-6)( 20～600℃),快速磨损试验在n=850转/分,磨料浓度0.6％工作5小时后测得环的开口间隙增大量为2.045mm,用其材质我厂先后作过6135、6100B3Q、T20-203等发动机的装机试验,并且以F600机型小批量生产出厂。就目前所收集的信息,均反映效果较佳。下面,就研制情况介绍如下:
Overview Our factory has been studying the material of high-strength piston ring since the year of 82. The material of pearlite vanadium-titanium high-strength ductile iron ring has been basically completed. Its material properties are: As-cast bending strength > 100kgf / mm ~ 2, modulus of elasticity ≥15.000kgf / mm ~ 2, hardness of 99 ~ 110 (HRB), thermal stability coefficient of more than 92%, line thermal expansion coefficient of <11 × 10 -6 ℃), rapid wear test at n = 850 rev / min, abrasive concentration of 0.6% after 5 hours of work measured ring opening gap increase of 2.045mm, with its material I have made 6135,6100B3Q, T20-203, etc. Engine installed test, and to F600 small batch production factory. The information collected so far shows better results. Below, on the development of the introduction are as follows: