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随着汽车柴油机的高速和强化发展,对活塞环环组零件的要求越来越高。这些零件不仅要有足够的热强度和好的耐磨性能,而且要求重量轻。为了达到这一目的,采取的措施主要是减少每只活塞所装用的活塞环数。现代汽车柴油机绝大多数已采用三环结构,即每只活塞装用两片压缩环和一片组合式油环。与此同时,为了改善活塞环对气缸的适应性及利于压缩高度活塞,活塞环的轴向高度(环高)也趋于减薄。为了增大环周径向压力(比压)、提高环的自振频率以避免环振,活塞环的径向厚度普遍增厚,即D/t值下降。在我厂历年来生产的活塞环中,60年代及其以前产品,压缩环环高为3
With the high-speed and intensive development of automobile diesel engines, the requirements for piston ring components are getting higher and higher. These parts should not only have sufficient hot strength and good wear resistance, but also require light weight. To achieve this goal, the main measure taken is to reduce the number of pistons for each piston installed. Most modern diesel engines have adopted the three-ring structure, that is, each piston with two compression rings and a combination of oil ring. In the meantime, in order to improve the adaptability of the piston ring to the cylinder and to facilitate the compression of the piston, the axial height (ring height) of the piston ring tends to be thinned. In order to increase the circumferential radial pressure (specific pressure) and increase the natural frequency of the ring to avoid ringing, the radial thickness of the piston ring is generally thickened, ie, the D / t value is decreased. Piston rings produced in our plant over the years, the 60’s and its former products, the compression ring is high 3