利用X射线进行锻钢冷轧辊应力测试时,发现其检测准确性受机械加工产生的附加应力层影响较大,本文通过试验测定了锻钢冷轧辊磨削附加应力层的深度。结果表明,附加应力层深度约为近表面300μm,且对于不同产品,附加应力层应力变化趋势始终一致,即压应力值快速减小,再逐步增大,最后略有减小趋于稳定,最后随深度变化缓慢变化。 X-ray forging cold-rolled steel stress test found that the accuracy of detection by mechanical processing of additional stress layer is more affected by the test to determine the depth of the forged steel cold roll grinding additional stress layer. The results show that the depth of additional stress layer is about 300μm, and the stress change trend of additional stress layer is the same for different products, that is, the compressive stress value decreases rapidly and then increases gradually, and finally decreases slightly to stabilize. Finally, Changes slowly with depth.