China T38 76mm T45 89mm hard rock drilling bits rods for quarry
,mining drilling
1 Presentation of Rock Drilling Bits
US imports of high-quality steel and carbide manufacturing of
China's best, all the threads we produce hot button drill bit
technology.
2 Materials and produce process details of Rock Drilling Bits
Material - we use 45CrNiMoVA production of tungsten carbide and
YK05 our cone drill bit , these two materials are world-renowned
drill production materials .
Our advanced technology --- the tapered drill wheel adopts thermal
technology , which is the most advanced technology for the
production of tapered round drills .
When cemented carbide or reduced permeability shows signs of damage
, button drills should be re-grinded
Fixed abrasive program usually brings good work habits .
For example , after checking the borehole , a plurality of holes
drilled at the end of a shift or reground . Premature grinding is
not necessarily uneconomic , because of less demand for grinding
carbide . The best reground , it will not be damaged and reduced
productivity .
Correct grinding greatly increases the service life of the drill
bit . But equally important , it also improves the performance of
the entire drilling operation , especially straightness of the hole
.
3 A comprehensive range of various button bits shown as below
| Thread sizes | R25 , R28 , SSR28 , SSR35 , R38 , T38 , T45 , T51 ...... |
| Head diameters | 33mm ~ 152mm |
| Face designs | flat face , drop center , uni-face |
