柴油发电机组连杆轴瓦有什么作用?

2025年04月02日 08:25
有1个网友回答
网友(1):

  连杆轴瓦的主要作用是减小连杆大头与连杆轴颈之间的磨损。连杆轴瓦一般由薄钢背和减磨合金层制成。薄钢背的作用是将减磨合金所产生的热量传给连杆大头;减磨合金层的作用是减小连杆轴颈的磨损,延长轴颈的使用寿命。
  薄钢背一般选用优质低碳钢钢带轧制而成,减磨合金层所用材料有多种,具体可根据柴油机使用要求的不同选用白合金、钢铅合金、铝基合金或高锡铝合金等。例如135型柴油机连杆轴瓦减磨合金层使用的就是高锡铝合金。为了防止连杆轴瓦在大头内部转动或轴向移动,一般在两片轴瓦上分别冲制出高出轴瓦背面的“定位凸耳”,个别柴油机采用定位销定位。根据连杆小头润滑方式的不同,选用的连杆轴瓦也不同。在连杆杆身中有油道的,要选用带孔的轴瓦,装配时轴瓦的孔径要与连杆杆身油道口对应。
  如需了解更多信息,欢迎登录相关网站:http://www.fdjdl.cn

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