I think the best metal drill bit is the oil drill bit.And what do you think the best metal drill bit is?Now let me tell you the best drill bit---oil drill bit.
Insert bit with high strength and high toughness hard alloy tooth, the optimization design of the tooth row number, number of teeth, teeth height and unique alloy tooth shape, give full play to the insert bit high wear resistance and excellent cutting ability. The new wear resistant material is deposited on the tooth surface of the steel tooth bit, while maintaining the high mechanical drilling speed of the steel tooth bit, and the service life of the cutting tooth of the drill bit is improved.
Oil drilling and geological exploration drilling is the most widely used roller bit. Cone bit according to the type of teeth can be divided into for milling tooth steel tooth roller cone bit, inserts (cone mounted hard alloy tooth) cone bit; according to the number of roller can be divided into single cone, dual cone, three cone and cone bit. Most widely used at home and abroad is the three cone bit.
The main structural characteristics of best metal drill bit :
1, the best metal drill bit has high strength and high toughness hard alloy teeth,it improve the impact resistance of the teeth, reduce the rate of broken teeth;
2, to optimize the design of tooth row number, number of teeth, teeth height and unique alloy tooth shape, give full play to the drill cutting and cutting speed;
3, using circlip locking cone,it can withstand high pressure drilling;
4, inner hole welding antifriction alloy,it can improve the bearing scuffing ability;
5, using high saturated nitrile rubber O - ring, seal compression optimization to improve the reliability of bearing seal;
6, the use of differential pressure ,it prevents drilling fluid into the lubricating system of the whole rubber oil storage bag, to provide a good lubrication of the bearing system, and to ensure that the "O" - shaped sealing ring to work properly to improve the working life of the drill bit;