Detailed Analysis of Coal Drill Bits
Coal drill bit is a product used in the deep excavation of this kind of mine. It is one of the most commonly used products in various mining industries such as coal mines, lead mines, and gold mines. It is a product promoted by the Ministry of Coal. Coal drill bits are more suitable for drilling in soft coal seams, coal rocks and harder coal seams. It has the advantages of fast speed, wide working range, relatively simple connection method, time-saving, labor-saving and long service life of the down-the-hole drill bit.
In terms of different working methods, coal drill bits can be divided into two types, one is dry type and the other is wet type. The dry drill bit does not use dust-absorbing water in the working process, and there is no water supply channel in the drill bit. The wet drill bit uses dust-reducing water during work, and there is a water supply channel at the drill bit.

According to the material used in the two wings of the coal drill bit, it can be divided into diamond composite drill bit and cemented carbide drill bit. The cemented carbide drill bit has good heat resistance, acid and alkali resistance, low temperature resistance and aging resistance. . In addition to the above advantages, it is also resistant to water stains. If it is in a relatively humid environment, then the load is stable for a long time and has good solder resistance and flame retardancy. Because the cost of cemented carbide drills is relatively low, it still occupies a dominant position in the domestic market.

The coal drill bit needs to be installed on the coal electric drill. It is suitable for drilling medium anchorage and support holes in hard rock formations, medium rock formations and soft rock formations in mining operations. And it is especially suitable for the bolt support operation in the coal mine roadway.

my country’s coal drill bit production industry now has two characteristics: First, because of its wide application in the coal drilling field, the market demand is relatively large. Second, although the number of production enterprises is large, most of them are relatively small in scale.