Abstract The softening of cemented carbide at the elevated temperature of MTCVD processes results in significant reduction of their strength, and thus, high coating deformation during cutting. In this way, at interrupted cutting loads, as during turning cast iron, the cutting performance of MTCVD coated cemented carbide inserts degrades due to premature coating fatigue fracture. To overcome this problem, appropriate heat treatments of MTCVD coated inserts were conducted. The related temperatures and durations for improving the substrate properties were optimized considering obtained strength data of uncoated inserts variously heat treated and the turning performance of coated ones correspondingly heat treated.

中文翻译：

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通过适当的热处理提高 MTCVD 涂层硬质合金刀片的切削性能

摘要 硬质合金在 MTCVD 工艺的高温下软化导致其强度显着降低，因此在切削过程中涂层变形较大。这样，在断续切削载荷下，如在车削铸铁期间，MTCVD 涂层硬质合金刀片的切削性能会由于涂层过早疲劳断裂而降低。为了克服这个问题，对 MTCVD 涂层刀片进行了适当的热处理。考虑到不同热处理的未涂层刀片的强度数据和相应热处理的涂层刀片的车削性能，优化了用于改善基体性能的相关温度和持续时间。