down-the-hole Rock drill bit rock drill bit R32, R38, T38, T45, T51 for mining and quarry
With the top quality of alloy steels imported from USA and the best carbides made in China , we produce all threaded button bits by hot press technology .
2.Materials and produce process details of rock drill bit
Materials- we use 45CrNiMoVA and YK05 Tungsten carbide to produce our taper drill bit, both are famous materials for drill bit produce in the world .Advanced technology---We produce our taper button drill bit with hot-pressing technology which is the best-advanced technology of producing taper button bit up to date .
Button bits should be reground when penetration rates drop or if the cemented carbide shows signs of damage
Fixed grinding routines often result in good working practices .
Bits for instance , can be examined and then reground after a specific number of holes , or at the end of the shift . Premature grinding is not necessarily uneconomical since less carbide needs to be ground off . It is better to regrind rather than reducing productivity due to damage .
Correct grinding adds considerably to drill bit service life . But equally important , it also enhances the performance of the entire drilling operation , especially hole straightness .
3.A comprehensive range of various button bits shown as below:
||R25, R28, SSR28, R32, SSR32, R35, SSR35, R38, T38, T45, T51, SST58, SST68, SGT60;
||33mm ~ 152mm
||flat face, drop center, uni-face