CAJ | 학술논문

对不同热处理工艺条件下的钢球，以及未经过和经过表面喷丸强化加工的成品钢球的应力分布状态进行了测试。结果表明：热处理后，钢球的应力分布状态与热处理炉内的碳势和基体碳含量的差值有关；未经过强化工艺的钢球表面有较高的压应力，经过强化工艺的钢球次表面出现强化峰值，有利于提高钢球寿命。
대불동열처리공예조건하적강구，이급미경과화경과표면분환강화가공적성품강구적응력분포상태진행료측시。결과표명：열처리후，강구적응력분포상태여열처리로내적탄세화기체탄함량적차치유관；미경과강화공예적강구표면유교고적압응력，경과강화공예적강구차표면출현강화봉치，유리우제고강구수명。
The stress distribution state is tested for steel balls under different heat treatment conditions and finished steel balls before and after surface shot peening strengthening process.The results show that the stress distribution state of steel balls is related to difference value between carbon potential in heat treatment furnace and carbon content in ma-trix after heat treatment.The surface of steel balls have higher compressive stress before strengthening process,and strengthening peak value appear in the subsurface of steel balls after strengthening process,which is helpful to improve life of steel balls.