1问题的提出近期,丰台车辆段部分检修车间反映,配装有尼龙磨耗盘的下心盘在投入运用的前几个段修期就较多地出现了直径磨耗过限问题。2009年3月,在专门用检测样板对新进货的转8G型转向架下心盘抽测时,发现新品下心盘与段修检测样板不符的现象大量存在。为此,笔者将带磨耗盘的各 1 PROBLEM PROBLEM Recently, part of the overhaul workshop of Fengtai depot reflects the problem of excessive wear of diameter when the lower core equipped with a nylon wear plate is used in the first few segments. March 2009, in the special test model of the new stock transfer 8G-type bogie under the heart pumping test, found that the new product under the plate and section Xiu repair test patterns do not match the phenomenon of a large number. To this end, I will bring the wear plate