2014年2月26日星期三

General Types of Tungsten Carbide Roller Cone Drill

Tungsten carbide roller cone drill bit has been widely used in the wheel wells, open-pit iron and non-ferrous metal mines, coal mines and other types of rock drilling, with the gradual increase in cone bit varieties, water and electricity sectors quarrying, clear base, hydrogeological drilling, coring, Chuanzao railroad traffic tunnel, mine shaft sinking and so on in the use of carbide roller cone bit. In order to improve the wear resistance of carbide roller cone bits and life, from oil mining drill to drill in the past are surfacing drill teeth with cast tungsten carbide working surface, the current cast tungsten carbide teeth surfacing drill work surface technology is still in use in soft formations drilling, and has been replaced by carbide teeth in hard formations.

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