Why Carbide Button Gear Abrasive Wear Fails

2022-06-09 Share

Why Carbide Button Gear Abrasive Wear Fails?


Any product will fail under long-term operation, and cemented carbide buttons are no exception. Today we will learn why cemented carbide buttons wear and fail!

In rock drilling, the tungsten carbide buttons break the rocks to drill holes in the rock. The carbide button must collide and rub against the rocks, which inevitably wears out. Wear is a failure of carbide buttons without fracture of carbide buttons. Due to the wear caused by the collision and friction between the carbide button and the rock, the worn tungsten carbide can no longer be used to drill the rock. The hard particles in the rock are first plowed into the softer binder phase portion of the carbide tine and are preferentially ground away. During the subsequent cutting motion, the WC grains that lost the protection of the binder phase were further exfoliated, thereby grinding away a small part of the alloy button. 


Due to the loading of the rock drill, the alloy teeth are constantly worn. Increasing of the relative movement and contact area between the alloy and the rock accelerates the wear of the carbide button. The higher the relative movement speed of the button and the rock, the larger the contact area, the greater the propulsion pressure of the rock drilling machine, and the faster the wear. 

The normal wear surface is a smooth surface like a flat surface. When the alloy hardness is low and the rock is hard, the wear surface will show some obvious wear marks. Generally speaking, the wear and force of the middle teeth and the side teeth are different. The greater the linear velocity of the teeth or teeth near the edge during work, the greater the relative friction with the rock and the more serious the wear is.


Wear failure is inevitable, but high-quality carbide balls can be purchased to minimize the possibility of failure.

ZZBETTER supplies a large number of cemented carbide buttons, which are produced from raw materials, with good product quality, wear resistance, corrosion resistance, high hardness, and long service life.


ZZBETTER’s tungsten carbide buttons:

Advantages of tungsten carbide buttons

1. Having unique working performance

2. High hardness and good wear resistance

3. Widely used in mining of various rocks and oil drilling.

4. Suitable for crushing very strong granite, limestone and poor iron ore, etc.

Applications of tungsten carbide buttons

1. Oil drilling and shoveling, snow plow machines, and other equipment.

2. Used for coal drilling tools, mining machinery tools, and road maintenance tools.

3. used in quarrying, mining, tunneling, and civil construction.

4. DTH Drill bit, thread drill bit, and other drill bits.

If you are interested in tungsten carbide products and want more information and details, you can CONTACT US by phone or mail at the left, or SEND US MAIL at the bottom of the page.

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