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对汽油机和柴油机的要求越来越高,使得发动机零件必须采用高强度的材料。在连杆材料不断发展的过程中,粉末冶金模压和钢模锻这两种制造方法处于激烈的竞争之中,而近年来采用这两种制造方法生产的连杆已向高强度可胀断分离材料发展。另一方面,随着现代轿车发动机的小型化,要求进一步减轻发动机零部件的质量,曲柄连杆机构中的连杆成为关注的焦点。目前,国外已开发出一种用于1.8 L 4缸发动机的铝连杆,通过选择合适的材料,使这种新型铝连杆的质量比迄今为止所使用的模锻钢连杆减轻了约50%,进而这种4缸发动机的质量被减轻约1 kg。
The demand for gasoline engines and diesel engines is getting higher and higher, making the engine components must use high-strength materials. In the continuous development of connecting rod materials, powder metallurgy and steel die forging these two manufacturing methods in the fierce competition, and in recent years using these two methods of production of the connecting rod has been high-strength swellable separation Material development. On the other hand, with the miniaturization of modern car engines, which require further reduction in the quality of engine components, connecting rods in crank-and-rod mechanisms are the focus of attention. At present, an aluminum connecting rod for 1.8L 4-cylinder engine has been developed abroad and the quality of this new type of aluminum connecting rod is reduced by about 50 times that of the forged steel connecting rod hitherto used by selecting suitable materials %, And thus the quality of this 4-cylinder engine is reduced by about 1 kg.