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一、前言为提高柴油机的经济性和使用性能,柴油机的变化也涉及到气缸套和活塞环环境条件的变化。特别是使用劣质燃料油以及最高爆发压力的提高对缸套和活塞环的影响更大。这种条件的变化,对气缸套和活塞环来说,不仅要提高耐磨性和抗拉伤性,而且对气缸套强度也提出了要求。气缸套的铸造方法有离心铸造和普通铸造两种。前者可以得到更高的强度。我们将活塞环材料与采用这两种方
I. INTRODUCTION In order to improve the economy and serviceability of diesel engines, the changes of diesel engines also involve changes of environmental conditions of cylinder liners and piston rings. In particular, the use of inferior fuel oils and the increase in maximum burst pressure have a greater impact on the liner and piston rings. This change of conditions, on the cylinder liner and piston ring, not only to improve the wear resistance and tensile strength, but also on the cylinder liner strength requirements. Cylinder liner casting methods are two kinds of centrifugal casting and ordinary casting. The former can get higher intensity. We will piston ring material and the use of these two parties