Subland twist drills for holes prior to tapping screw threads

2013 ◽  
Keyword(s):  
Screw Threads ◽  
Twist Drills

Discussion on “Unique methods used in the manufacture of twist drills, taps and dies” at the Melbourne Section of the Institution

1956 ◽  
Vol 35 (9) ◽  
pp. 591
Author(s):  
H.H. Taylor ◽  
Fred Thorpe ◽  
R.E. Andrews ◽  
Ring ◽  
Hansen ◽  
...  
Keyword(s):  
Twist Drills

AISI TYPE M7

Alloy Digest ◽  
1987 ◽  
Vol 36 (10) ◽  
Keyword(s):  
Tool Steel ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
Significant Loss ◽  
Steel Mills ◽  
Aisi Type ◽  
End Mills ◽  
The Many ◽  
Twist Drills

Abstract AISI Type M7 is a molybdenum type of high-speed steel. It is somewhat similar to AISI Type M1 tool steel but with higher percentages of carbon and vanadium to provide an improvement over AISI Type M1 in cutting characteristics without a significant loss in toughness. It is suitable for a wide variety of cutting-tool applications where improved resistance to abrasion is required. The many uses of Type M7 include twist drills, end mills, shear blades, punches, milling cutters, lathe tools, taps and reamers. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: TS-483. Producer or source: Tool steel mills. See also Alloy Digest TS-468, January 1987.

TATMO

Alloy Digest ◽  
2006 ◽  
Vol 55 (9) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Physical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
General Purpose ◽  
Twist Drills

Abstract Tatmo is a general-purpose high-speed steel often used in twist drills and taps. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on wear resistance as well as forming, heat treating, and machining. Filing Code: TS-633. Producer or source: Timken Latrobe Steel.

BÖHLER S705

Alloy Digest ◽  
2019 ◽  
Vol 68 (9) ◽  
Keyword(s):  
Physical Properties ◽  
High Speed ◽  
Cold Work ◽  
High Speed Steel ◽  
Heat Treating ◽  
Twist Drills

Abstract Böhler (or Boehler) S705 is a cobalt alloyed, tungsten-molybdenum high-speed steel. Applications include turning and planing tools of all types, milling cutters,taps, twist drills, woodworking tools, and cold work tools. See also Alloy Digest TS-761, April 2019. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on heat treating and machining. Filing Code: TS-776. Producer or source: Voestalpine BÖHLER Edelstahl GmbH & Co KG.

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