The History of Cemented Carbide
The initial development of cemented and sintered carbides occurred in Germany in the 1920s. ThyssenKrupp says, "Sintered tungsten carbide was developed by the "Osram study
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CUTTING STRUCTURE |
Conical on gage, double spherical on inner rows. Designed for high compressive strength, hard and abrasive formations, such as granite, limestone, sandy shale, dolomite, chert. Compressive strength: 37,000-44,000 psi/255-303 MPa |
SHIRTTAIL PROTECTION |
Hard welding and wear resistant carbide protection on shirttail lip and lug |
PRODUCT SPECIFICATION |
IADC Code: 715 |
Bearing Type: Roller-Ball-Roller-Thrust/Sealed Bearing |
Circulation Type: Jet Air |
Cutting Structure: |
Inner Rows: Double spherical |
Gage Rows: Conical |
Gage Bevel Protection: Flat |
Pin Connection: 6 5/8" API REG |
Metric Bit Diameter: 251 mm |
Product Weight: 143 lbs/65 kg |
OPERATING SUGGESTIONS |
Weight on Bit: 39,500-59,250 lbs/17.9-26.9 T |
Rotational Speed: 60-90 rpm |
Air Back Pressure: 29-58 psi/0.2-0.4 MPa |
The initial development of cemented and sintered carbides occurred in Germany in the 1920s. ThyssenKrupp says, "Sintered tungsten carbide was developed by the "Osram study
With the annual national day coming, Shareate is about to have an eight-day holiday, and this year's holiday has been extended by one day because
We sent technological staff to the local mine regularly in order to investigate data about bit damage degree and fitness to the formation. We are
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