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本文介绍精密机床轴承热处理工艺对工序间变形的影响,通过试验表明:采用150—160℃分级淬火可以显著地减少轴承套圈的热处理变形量。特别对于较大和易变形套圈,效果更为显著。而且热处理的变形量对磨加工工序间变形有影响。为比,精密机床轴承广泛采用分级淬火工艺。附图7幅。表6个,参考文献4篇。 滾铬轴承钢等温退火——成都轴承厂, 《轴承》,1966,4期45—5 过去采用一般的退火工艺件进行退火,由于是分段加热,随炉降。随炉降温时间占整个退火周期的三分之二,整个退火周期长达36小时,为了缩短生产周期,提高生产效率,进行了等温退火的试验研究,最后制订了等温退火工艺并用于生产,使生产周期由36小时缩短到了7小时,提高了生产效率5倍。等温退火工艺中选取800±15℃作为最终加热温度;700—710℃作为等温温度。
In this paper, the influence of the heat treatment process of the precision machine tool bearing on the deformation during the process is introduced in this paper. The results show that the heat treatment deformation of the bearing ring can be significantly reduced by using 150-160 ℃ quenching. Especially for larger and deformable ferrules, the effect is more pronounced. And the amount of deformation of the heat treatment of deformation during the grinding process have an impact. For the ratio, precision machine tool bearings widely used classification quenching process. Figure 7 Figure. Table 6, 4 references. Rolling chromium bearing steel isothermal annealing - Chengdu Bearing Factory, “bearing”, 1966, 4 45-5 annealing process used in the past, the general annealing, because it is sub-heating, with the furnace down. With the furnace cooling time accounted for two-thirds of the entire annealing cycle, the entire annealing cycle up to 36 hours, in order to shorten the production cycle, increase production efficiency, the isothermal annealing test study, and finally developed isothermal annealing process and used in the production, The production cycle was shortened from 36 hours to 7 hours, increasing the production efficiency by 5 times. Isothermal annealing process selected 800 ± 15 ℃ as the final heating temperature; 700-710 ℃ as the isothermal temperature.