3.Proper cooling process of cemented carbide drill bits

 

(1) For external cooling, you should pay attention to the directional combination of cooling, and into the upper and lower echelon configuration. Then the carbide drill bits can work correctly.

 

(2) For the inner cooling, you should pay attention to the pressure and flow rate, and you should avoid the leakage of the cooling liquid.

 

4.Correct drilling technology

 

The drilling technology is also important to the correct use of cemented carbide drill bits.

 

(1) When the drilling surface angle > 8°, please do not start drilling; when the drilling surface angle <8°, the feed should be reduced to 1/2~1/3 of the normal.

 

(2) When the drilling surface angle>5°, the feed should be reduced to 1/2~1/3 of the normal.

 

(3) When drilling the cross hole, the feed should be reduced to 1/2~1/3 of the normal. Three-wing 

bit is the best choice.

 

(4) Two-wing cemented carbide drill bit can not be used for reaming, which will make the drill bits work incorrectly. Three-wing bit can be used for reaming.

 

All the cemented carbide drill bits should be correctly used depending on their work  pieces, then they may play the biggest roles.  

 

 

Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn