Общий каталог Yamawa 2022 - 2023 - страница 382

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JIS ZEN-P

Spiral Pointed Taps for Nickel Base Alloys

Specification

Nitride＋Oxide

Recommended Tapping Speeds depending on Materials

Low carbon steelsMedium carbon steelsStainless steelsNickel base alloys
5低炭素鋼105中炭素鋼105ステンレス鋼10ニッケル基合金510
(m/min)(m/min)( m/ min)(m/min)

Product Features

  • The tap is produced from high grade powder high speed steel material that has excellent heat resistance and abrasion resistance properties.
  • Cutting edge geometry is designed to accommodate for thread shrinkage and the high temperature of difficult to machine materials.

●Utilizes the appropriate flute shape and rake angles for nickel base alloy to allow a smooth discharge of chips. ●YAMAWA uses the ideal surface treatment to prevent chip welding and abrasion. ●Compensating for diameter shrinkage of the internal screw thread, the tap is produced moderately oversize.

Tapping Data

Tapping Condition [M6×1]

Workpiece MaterialHastelloy C-276
Bored Hole Sizeφ5.0ZEN-P
Tapping Length Tapping Speed10mm 5m/minCan Continue
Machinery TypeCNC tapping machineGeneral Purpose PO
Tain FluidWater soluble cuttin fluid
ppgg l0 50100 （Number of ho150 les processed）200 250

Characteristics of nickel base alloys.

  • Nickel based alloys have much better corrosion resistance and heat resistance than steel. In general, nickel based alloys are much more difficult to process than steels and stainless steels. Nickel based alloys include A286, inconels, hastelloys, Waspaloys and more. There are many kinds of nickel based alloys, but one of the more difficult ones to cut is inconel 718.

Types of problems tapping nickel based alloys.

  • Nickel based alloys have a high temperature strength and thermal diffusion is small. Abrasion occurs quickly on the taps cutting edge.

●The internal thread diameters tend to spring back and may cause shrinkage and the tap may be crimped causing breakage.

  • The material causes chip welding on the cutting chamfer and the flank surface of the tap's threads. The finished surface of the internal screw thread produced from nickel based alloys can become rough and coarse.