Tungsten carbide roller cone drill edge wedge type B soft rock drilling teeth, tooth pitch and reasonable, tooth height appropriate. Drilling limestone, sandstone, shale, dolomite and shale brittleness, WOB per centimeter diameter of the drill between 535 kg to 803 kg, speed of 80 per minute to 120 revolutions per minute. Carbide roller cone drill hard rock drilling using Z-shaped cone ball gear, larger pitch, highlighting the higher gear wheel tooth tip cloth less self wash style. P-shaped flat back round inlaid teeth, claws back surfacing cast tungsten carbide. WOB per centimeter diameter of the drill bit 714 kg to 107 kg range, speed of 60 per minute to 100 revolutions per minute.
2014年1月29日星期三
Various Types of Tungsten Carbide Roller Cone Drill Bit
Tungsten carbide roller cone drill edge wedge type B soft rock drilling teeth, tooth pitch and reasonable, tooth height appropriate. Drilling limestone, sandstone, shale, dolomite and shale brittleness, WOB per centimeter diameter of the drill between 535 kg to 803 kg, speed of 80 per minute to 120 revolutions per minute. Carbide roller cone drill hard rock drilling using Z-shaped cone ball gear, larger pitch, highlighting the higher gear wheel tooth tip cloth less self wash style. P-shaped flat back round inlaid teeth, claws back surfacing cast tungsten carbide. WOB per centimeter diameter of the drill bit 714 kg to 107 kg range, speed of 60 per minute to 100 revolutions per minute.
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