Diamond coring bit only has an important role in geological exploration, but also because it has a fast rate of penetration, loss of small stone, without damaging the surrounding environment and other unique advantages and is widely used in marble, granite, steel and concrete wall drill hole. The hard rock drilling, but also must have good product quality protection, such as the use of good alloy material, a good welding process, etc., can effectively improve product quality.

Diamond drill is a kind of composite sintered body made of hot-pressed diamond and carcass material on the steel base, often called the cutter head. Domestic drill often use the method of brazing connection. Our gorgeous diamond drill is a good welding process to weld the alloy to the drill body, and part of the drill bit is welded with a good alloy to drill hard rock. Diamond coring bit work due to the extremely fast speed, by a strong impact and vibration, the need for high shear strength and high temperature strength. The rock drilling process, will generate heat due to the friction between the drill bit and the rock, the drill part of high temperature resistant material should be used, is not the only way to melting temperature, reduce the hardness, the drill bit soldering apparatus often due to the rapid Drilling into the heat causes the solder to melt and come off, so it is imminent to improve the laser welding process of the diamond coring bit. When welding, should pay attention to the following content:

(1) In order to make laser welding diamond coring bit successful, the cutter head must be dense and the mechanical performance is good under certain conditions of the cutter head formula;

(2) During the process of laser welding diamond coring bit, it is necessary to select the appropriate process parameters such as laser power density, welding speed, focus position and shielding gas flow rate in order to ensure welding quality;

(3) Adopting the method of adding a reflector in the light path system, the backside welding of the drill bit can be carried out to solve the problem that the drill bit is unstable in the bonding strength due to the single side welding, but this method can not weld the drill bit with too small diameter;

(4) using a small standard welding process is an effective way to weld the drill bit;

(5) Laser welding diamond core drill method is not suitable for mass production, productivity is not high, to be further improved.