不论转向架或是基础制动,其各种杠杆、拉板上的孔,为了检修方便,都镶有钢套。由于制造钢套费工、费料、周期长、成本高,一直是生产中的关键难题,有关部门都在积极研究解决。为此,我厂在60年代曾采用过鞍山生产的铁基含油粉末冶金轴承 Regardless of the bogie or the basic brake, the various lever, the hole on the pull plate, in order to facilitate the maintenance, are set with steel sleeve. Due to the cost of manufacturing steel sets, materials, long cycle and high cost, it has always been a key problem in production. Relevant departments are actively studying and solving the problems. To this end, I plant in the 1960s have used Anshan Iron-based production of powder metallurgy bearings