300型和G300型柴油机凸轮轴喷油凸轮运行中,在圆弧R处(图1)常发生擦伤现象,如不及时修复,还将与其作相对运动的复的基础上,对G6300ZD_3型柴油机(功率1103kW,转速600r/min)发电用的喷油凸轮用堆焊办法作了跟踪修复试验。经修复后的一只喷油凸轮运行720小时,才出现表面擦伤现象,与其相配的喷油泵顶杆滚轮未出 300 and G300 diesel engine camshaft fuel injection cam running at the arc R (Figure 1) often occur scuffing phenomenon, if not repaired in time, but also with the relative movement of the complex on the basis of the G6300ZD_3 diesel engine (Power 1103kW, speed 600r / min) fuel injection cam with power generation made tracking repair test. After the repair of an injection cam running 720 hours, appeared surface abrasion phenomenon, and its matching pump plunger wheel is not out