极细颗粒的硬质合金基体，使刀具的耐磨性和切削刃强度得到完美结合。
Solide carbide alioy matrix of super fine particle. Combined the abrasive resistance and cutting blade intensity of the cutting perfectly.
并介绍了两种完全有别于传统的剧烈塑性变形制备超细晶和纳米晶金属材料的最新工艺，如大应变切削和大应变挤压切削。
Two novel technologies which are radically different from traditional SPD methods, such as large strain machining(LSM) and large strain extrusion machining(LSEM), were introduced.
用细晶粒硬质合金刀具进行了铁基粉末冶金零件的高速干切削试验。
The dry and high-speed cutting experiments are carried out to study the cutting performance of turning the Fe-based PM parts by using the fine grain cemented carbide inserts.
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