The drill bit body has three wings four cylindrical tungsten carbide inserts and curved slots for removal of cuttings.

在结构上采用了三翼四齿的钻头体、弧槽形排粉沟槽，适用于硬、中硬、软岩的三种齿形。

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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.

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。

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In this paper, a residual stress on cemented carbide inserts caused by grinding of diamond and electrical grinding of diamond, and its effect on cemented carbide strength are studied.

研究了在金刚石刃磨和电金刚石刃磨时硬质合金刀片上引起的残余应力，及其对硬质合金强度的影响。

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And even though diamond inserts cost roughly ten times as much as carbide inserts, they didn't need to be replaced nearly as often, thus lowering overall drilling costs, especially at offshore rigs.

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