材料和热处理Materials and heat treatment 基体材质: 20CrMnTi、40Cr、GCr15等高、中、低碳合金钢 基体硬度:HRC40-62 Base material :20CrMnTi、40Cr、GCr15 high, Middle or low carbon alloy Base hardness:HRC40-62 应用特点 Using Property 钢基镶嵌石墨轴套,是加强型产品,具有较高的抗压性能,工作 时镶嵌石墨排出石墨微粉颗粒,在轴和套之间产生油和石墨微粉 的混合物,即使在无油状态,石墨微粉仍能提供良好的润滑条件, 广泛应用于旋挖钻、挖掘机、起重机、混凝土泵车等重要受力关 节部位。 Steel-based graphite enchased bushing is enforced product with high pressure resistance property. During working, the graphite particulate can be fed out and mix with oil to lubricate movement parts even without oil.Applied for joint rotation position of driller or digger or lift etc. 技术参数 Engineering parameter 摩擦系数friction factor :<0.17 较高使用温度critical temperature :350℃(钢) 极限动载荷critical rotation load :250N/mm2(钢) lm/min的极限载荷critical load:70N/mm2 较高滑动速度critical speed:0.15m/s 使用极限PV值critical PV :2.5N/mm2 *m/s