Cemented carbide for Coal Drilling

Product Description

Coal mining: mainly carried out through coal mining machines. The cutting part of the coal mining machine is equipped with cutting teeth, which rotate to form the impact of the cutting teeth on the coal body, causing the coal blocks to fall off. The main material of the cutting teeth is Tungsten carbide.

Tungsten carbide used in coal mining tools are divided into two types: flat teeth and pickaxe teeth.

Materials for excavation tools. Tungsten carbide are formed by powder metallurgy processes using refractory metal hard compounds and bonding metals, through powder preparation, compression molding, and high-temperature sintering. Has a series of excellent characteristics. Including high hardness Temperature and wear resistance, exceeding the room temperature hardness of high-speed steel at 600 ℃ and exceeding the room temperature hardness of carbon steel at 1000 ℃; Has high compressive strength and elastic modulus; Has lower impact toughness and smaller thermal shrinkage coefficient. This Tungsten carbide with excellent performance have been widely used in coal mining, geological exploration, mining and other fields.

Features

It is very important to choose suitable materials as mining drilling tools in the process of coal mining. Tungsten carbide has become the most suitable material for coal production due to its special corrosion resistance, high hardness, excellent fracture toughness, and compressive strength.

Specification

The most commonly used tungsten carbide in coal mining tools is YG8, and hard alloys such as YG6 and YG4C can also be used. In the coal mining industry, when using hard alloy to drill into softer rocks, the efficiency is 15 to 20 times higher than that of high-speed steel drill bits, 25 to 40 times higher than that of carbon steel drill bits, and the productivity can be increased by 50% to 200%.