The
tungsten carbide mining button is composed of mining button handle,
button head and alloy cutter head. The mining button handle and its
cutter head are collectively referred to knife body. Its hardness is
40-45HRC. The pounding tenacity is not less than 49J/cm2.
There
are many types of mining button. The general structure is to insert a
carbide cutter head into a steel body with low-alloy structure that has
been quenched and tempered.
There are two modes of traditional normal mining button:
1. With the abrasion of the tungsten carbide button head, it will be so
blunt that it is difficult to cut the rock effectively. When the number
of buttons on the roller reaches a certain amount, the tunneling speed
will be significantly slower. At this time, it is necessary to stop the
machine for examination and replace the button.
2. Owing to the low durability of steel basal body, the working basal
body gets a lot of wear before mining button is worn. When it is
severely worn, the support for the mining button head is lost so that
the alloy is completely detached without being completely used. The
mining button ceases to be effective. In order to deal with the failure
modes, people improve the wear resistance of the button by various
methods which includes using the tungsten carbide with fine performance
and high wear resistance and the alloy with high hardness and fine
mechanical property as a substrate.
The mining button has low wear resistance. Therefore, we should do the
prevention well. Selecting a fine knife body is very important. The
property will directly affect the performance of shearer, the power
consumption, the stability, and the lifetime of other relevant parts.
The mining button is the main part of mining machinery and tunnel
machinery which plays an important role in the cutting of the coal bed
and rock formation, coal mining and tunneling. At present, mining
buttons are commonly used in coal mines. They are quickly worn out with
high power consumption in complex environments. The performance of
tungsten carbide mining button is far from the requirements of
high-yield and high efficiency.
If you have got any inquiry of tungsten carbide, please feel free to contact us:
Email:
sales@chinatungsten.com/
sales@xiamentungsten.com
Tel.: +86 592 5129696/+86 592 5129595
Fax: +86 592 5129797
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