论文部分内容阅读
本准备适用于以锡基或铅基合金制造的合金层厚度不超过0.50mm的汽车发动机主轴瓦、连杆轴瓦、曲轴止推片,以及合金层厚度不超过0.80mm的凸轮轴轴套的合金层金相组织检验。 1 技术要求 1.1 锡基合金ChSnSb4─4和ChSnSb8─4,两种合金采用同一标准。 1.1.1采用离心铸造的轴瓦,按本标准第一级别图评定。主轴瓦和连杆轴瓦1～4级合格,5级不合格;凸轮轴轴套1～5级合格,6级不合格。说明见表1。
The preparation is suitable for tin base or lead-based alloy alloy layer thickness does not exceed 0.50mm automobile engine main bearing bush, connecting rod bearing, crankshaft thrust washer, and the alloy layer thickness of not more than 0.80mm camshaft sleeve alloy Layer metallographic examination. 1 Technical Requirements 1.1 Tin-based alloys ChSnSb4 ─ 4 and ChSnSb8 ─ 4, the two alloys using the same standard. 1.1.1 Centrifugal casting bearing, according to the first level of this standard assessment chart. The main bearing and connecting rod bearing 1 to 4 qualified, 5 failed; camshaft bushing 1 to 5 qualified, 6 unqualified. See Table 1 for details.