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支重轮是履带推土机行走机构上一个比较重要的易损件.在行驶过程中,作用在支重轮的工作滚动面上除机重载荷和冲击载荷外,还存在着严重的磨损.以前,支重轮用50Mn铸钢,经退火后,采用整体加热一滚动面喷水淬火,或滚动面火焰淬火工艺,淬硬层浅,在葛洲坝水电工程恶劣的施工条件下使用寿命有的只有几百小时,一般也只有一千小时左右,使用寿命低,经常影响推土机的正常工作.为了提高支重轮的使
The track roller is a relatively important wearing part of the track bulldozer running mechanism. In the driving process, the heavy roller wears on the work rolling surface of the track roller, in addition to the heavy load and impact load, there is also serious wear and tear. The 50Mn cast steel for the support roller, after being annealed, adopts the integral heating-rolling surface spray quenching, or the rolling surface flame quenching process, the hardened layer is shallow, and the service life is only a few hundred under the severe construction conditions of the Gezhouba Hydropower Project. Hours, generally only about one thousand hours, the service life is low, often affect the normal work of the bulldozer. In order to improve the support of the wheel