为降低切削区温度、防止刀具的氧化磨损，提出在低温氮气射流条件下进行钛合金的高速铣削加工。
The use of cryogenic nitrogen gas jet to reduce the temperature of cutting zone and to avoid oxidation wear of tool in high speed milling titanium alloy was presented.
锡可有效改善钢材的易切削性能，原因是在切削温度范围内富集在晶界的锡使钢材的塑性降低。
It improves the machinability of steels because of brittlement of grain boundaries resulting from the tin segregating on the grain boundaries of the steels.
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