我厂过去采用锤上胎模锻方法锻造圆锥滚子轴承内圈,劳动强度大,人员多,需七八个人围着汽锤来回搬动几十斤重的锻模,又热又累,既不安全,产品质量又不能保证。工人要求对这种笨重的锻造方法进行改革。我们组成“三结合”的改革小组,首先对7813内圈进行扩孔辗压试验。经多次试验,成功地锻出了7813内圈。生产实践证明:扩孔辗压比胎模锻有生产效率高、模具耗损少、材料利用率高、成本低、质量好、 I used to hammer the factory on the way forging die forging tapered roller bearing inner ring, labor-intensive, more personnel, seven or eight individuals around the hammer back and forth to move a few pounds of heavy forging die, hot and tired, both Insecurity, product quality can not be guaranteed. Workers demanded a reform of this cumbersome forging method. We formed a “triple combination” of the reform team, first of 7813 inner ring reaming rolling test. After many tests, successfully forged the 7813 inner ring. Production practice has proved that: reaming rolling than the tire forging a high production efficiency, less mold wear and tear, high material utilization, low cost, good quality,