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苏联吉尔—130型发动机连杆材料是40P钢,硬度HB217～248,连杆小头中的衬套材料是БP.OДC4-4-2.5青铜ГOCT(苏国家标准)5017-49。连杆的主要缺陷是:小头衬套磨损、大头孔变形、大小两头的孔中心线不平行(连杆弯曲)、连杆扭曲杆身不在一个平面上、大头两侧端面磨损,有较深的刮痕。检验连杆弯曲、扭曲和中心距的装置示于图1。平台1上固定着支座26。支座孔中压配一个钢套,钢套里安装主轴25。钢套和主轴都是
The Soviet Union Jill -130 engine connecting rod material is 40P steel, hardness HB217 ~ 248, connecting rod head in the bushing material is БP.OДC4-4-2.5 bronze ГOCT (Su country standard) 5017-49. The main defects of the connecting rod are: the wear of the small head bushing and the deformation of the large hole, the center line of the hole of the two ends of the size is not parallel (the connecting rod is bent), the rod of the connecting rod is not in a plane and the end face of the big head is worn, Scratches. The device for verifying the bending, twisting and center distance of the connecting rod is shown in FIG. 1. The platform 1 is fixed with a support 26. A steel sleeve is press fit in the bearing hole, and the spindle 25 is installed in the steel sleeve. Steel sleeve and spindle are