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The specification model and application field of beneficial coal drill bit?
Release time:
2018-07-16
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Source:
Specifications of coal drill bits The specifications of coal drill bits are divided into φ28mm-8,φ30-8,φ32mm-8,φ38mm,φ42mm-12 according to the diameter and wing size. The classification of coal drill bit according to different working methods, coal drill bit can be divided into two kinds of dry and wet. Dry drill bit is a drill bit that does not supply dust-reducing water during drilling and the drill bit body has no water supply channel; wet drill bit; drill bit that supplies dust-reducing water during drilling and the drill bit body has water supply channel. According to the different materials of the two wings, the coal drill bit is divided into carbide drill bit and diamond composite sheet (PDC) drill bit. The purpose of the coal drill bit is installed on the coal electric drill, which is mainly used
Specifications of coal drill bits The specifications of coal drill bits are divided into φ28mm-8,φ30-8,φ32mm-8,φ38mm,φ42mm-12 according to the diameter and wing size. The classification of coal drill bit according to different working methods, coal drill bit can be divided into two kinds of dry and wet. Dry drill bit is a drill bit that does not supply dust-reducing water during drilling and the drill bit body has no water supply channel; wet drill bit; drill bit that supplies dust-reducing water during drilling and the drill bit body has water supply channel. According to the different materials of the two wings, the coal drill bit is divided into carbide drill bit and diamond composite sheet (PDC) drill bit. The purpose of the coal drill bit is installed on the coal electric drill, which is mainly used for drilling the anchor support hole in the soft and hard rock. It is widely used in roadways with rock hardness f less than 8, especially suitable for bolt support operations in coal roadways, and can drill roof bolt holes.
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