The classification of drill bits
Because directly drilling rock, drill bits are the most vulnerable drilling tools, and are manufactured by embedding cemented carbide on bit bodies. According to the shapes of cemented carbide, drill bits can be divided into the following categories:
1. insert bits, mainly including chisel bits, three-edged bits, cross type bits and X type bits.
2. button bits, including tapered button bits , threaded button bits, high and low pressure DTH bits.
3. compound drill bits with inserts and buttons, and roller bits
The concept and application of drill bits
Drill bits are used for directly drilling and breaking rock.
What is the cemented carbide for drilling tools
The varieties of the cemented carbide for drilling tools gradually change with the development of drilling tools.
Development of the cemented carbide
Since Karl Schroter developed WC-Co cemented carbide by powder metallurgy in 1923, and the Krupp Company began mass production of the WC-Co cemented carbide named "WIDIA" in 1926, the cemented carbide
Jumbos and Drilling Tools for Underground Tunnels
The jumbos for underground tunnels, used in underground tunneling and production for blast holes, anchor holes, cut holes, etc., generally have 1-2 rock booms, each of which is assembled with a hydra
Drill Rigs and Drilling Tools for Underground Long Hole Production Drilling
The underground long hole production drill rigs, assembled with hydraulic drifters on the booms, are used by impact and rotation in hard or middle hard rock for drilling holes with diameters of 51 to