Tungsten Carbide Bullet Button Shortcomings

In terms of structure, the top of bullet type tungsten carbide button is short so that button will abrasive easily when it works. And the abrasion of button crown is becoming the main form of scrapping under such a situation, which impact and the hardness of rocks is not enough.when tungsten carbide button cutting rocks into a certain depth, the contact area between rock and buttons is growing faster. As a result, the pressure of carbide button decreases. This will lead a bigger plate growing faster than the crown abrasion. In addition, the taper is broken because of a lack of toughness and hardness, according to relevant statistics, there is 20% tungsten carbide drill bits were broken, which made of such bullet-shaped buttons at work.

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