Heyi High Speed Steel Taper Drill, Taper Handle, Fried Dough Twists Drill, Steel Parts, Stainless Steel, Hard Materials, Special Drill, High Hard Drilling
Heyi High Speed Steel Taper Drill, Taper Handle, Fried Dough Twists Drill, Steel Parts, Stainless Steel, Hard Materials, Special Drill, High Hard Drilling

CLOUDROAD

Heyi High Speed Steel Taper Drill, Taper Handle, Fried Dough Twists Drill, Steel Parts, Stainless Steel, Hard Materials, Special Drill, High Hard Drilling

$2.80

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High-speed steel taper shank twist drill is a drilling tool with a Morse taper shank as the connection structure. It is made of HSS material and is suitable for drilling steel, cast iron and stainless steel in lathes, milling machines and other equipment. The total length of the drill bit is designed according to the gradient of specification changes.
The product adopts a 118° standard vertex angle design, a spiral groove helix angle of 25°-32°, and a back angle of 8°-20°. The chip removal efficiency is improved by optimizing the grinding process, and the design of a 40°-60° chisel edge bevel angle can effectively reduce drilling resistance. The surface can be selectively treated with carbonitriding or oxynitriding to enhance wear resistance.