Automobile Casting Parts and Bucket Adapters bit

Date:22-06-2018

The drill bit drills directly to the rock and is the most vulnerable part of the drill bit. It is composed of a rock hard alloy embedded in the bit body.
According to their use of the drill bit shape of the alloy can be divided into the following categories: sheet lead (mainly a brazing bit, three-edge bit, cross bit, X-type bit), shank bit (with ball bit, high and low pressure DTH drill bit), chip composite bit, cone bit and so on.
DTH drills are mainly used for open-air operations, while roller cone drills are mainly used for drilling exploration.
Sheet-like bits are the earliest, most widely used and the most productive brazed heads in China. One type of bit is about 80%, which is mainly used for small hole and shallow hole drilling. The cross-type and X-type bits are mainly used for tough medium and deep holes. The
Due to factors such as structure and force, the chip-type drill bit has low crushing rock efficiency, slow moving footage, large amount of alloy and more prone to waste. And because of its structure and force, the maximum diameter is limited. Generally, the diameter of a single-shaped bit is not more than 45mm, the cross-type bit is no more than 64mm, and the X-type bit is not more than 89mm. Otherwise, alloy fracture will easily occur and cause early failure. .
In addition to a large number of low-end markets and some extremely tough ores, sheet-like bits and bits have gradually failed to meet the needs of modern rock drilling. Nowadays, in many neutral and brittle rock conditions, chip drill bits are increasingly being replaced by toothed bits. The ball bit is composed of cemented carbide studs embedded in the bit body. Compared with the sheet-type drill bit, the ball-to-tip bit has free teeth, and the number and position of the middle and middle teeth can be reasonably determined according to the drilling diameter and the size of the rock breaking load, and the diameter of the drill bit is not limited.

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