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托带轮是用HT 15-33灰铸铁铸造,硬度为HB163～229。根据磨损情况,可进行以下修复: 1.轮缘磨损托带轮轮缘直径标准尺寸为φ220毫米,允许不修值为φ200毫米,极限值为φ180毫米。当托带轮轮缘磨损后,直径小于φ200毫米时就应当进行修理。根据设备条件,可选择以下两种修理方法: (1)浇铸修复法先将磨损的托带轮轮缘车圆,然后在每一个轮缘上车一个梯形沟槽,再在每一个轮缘沟槽内钻3个φ8毫米、深12毫米均匀分布的孔,再将托带轮放在炉上加热到325～400℃,然后放在金属模或砂模内进行浇铸,浇铸后缓慢冷却即可。 (2)外缘镶套修理法将磨损的托带轮轮缘车圆
The carrier pulley is cast in HT 15-33 gray cast iron and has a hardness of HB163 to 229. According to the wear and tear, the following repairs can be made: 1. The rim wear The standard diameter of the rim of the support pulley is φ220 mm. The allowable diameter is φ200 mm and the limit is φ180 mm. When the pulley rim wear, the diameter of less than 200 mm should be repaired. According to equipment conditions, you can choose the following two repair methods: (1) Casting repair method first wear bearing wheel flange rim car, and then in each rim on a trapezoidal groove, and then in each rim groove Drill three φ8 mm, 12 mm deep hole evenly distributed, and then the carrier wheel on the furnace heated to 325 ~ 400 ℃, and then placed in the mold or sand mold for casting, casting slowly cooling can be . (2) set the outer edge of the repair method will wear the belt wheel rim car round