Introduction to the domestic the ball tooth drill head solid tooth method

发布时间：2014/6/20

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At present in China, the ball tooth drill head of drill bit in the process of producing solid tooth method under normal circumstances there is a solid tooth, hot welding, cold insert of the three. Then using which method the tooth fixed to the brazing alloy column head make its support effect is better, in the process of drilling rock does not produce shift and fall off? Let's look at respectively. First, the welding process As early as the connection methods used in the welding of our country. Its operation method is more simple, first determine the welding of the hole and alloy column tooth size, again according to different structure of drill bit to drill out the corresponding tooth hole, the use is suitable for the material of the alloy carbide welding on the bit body, the downside of this approach is obvious because it is manual operation so easy to leave welding scar. Will not only affect the appearance of the ball tooth drill head, also easily appeared in some places the lack of weld in some places the welding strength is not enough, this makes the easy life of drill bit is low. Now the manufacturing technology has gradually be eliminated. The second, cold permanent tooth Are most of the manufacturing units are adopting the technology of our country at present. Its main characteristic is adopted according to the drill bit with the steel yield limit and calculate the tooth fitting clearance between the hole and alloy column, the column under external force into tooth hole. This process is relatively easy to grasp at the same time, it has a high production efficiency, only the stable performance. Under external force in a bit more vulnerable to damage, and the late life of drill bit is limited, now this technology is mainly used in less demanding ball screw drill bit solid tooth. Third, heat insert Heat set solid tooth technology in our country now only have higher production technology of the ball tooth drill head drilling tools manufacturer in use, the advanced process not only is simple to operate, and has very good stability.