Plasma assisted nitriding for micro-texturing onto martensitic stainless steels ∗

Takahisa Katoh, Tatsuhiko Aizawa, Tetsuya Yamaguchi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Micro-texturing method has grown up to be one of the most promising procedures to form micro-lines, micro-dots and micro-grooves onto the mold-die materials and to duplicate these micro-patterns onto metallic or polymer sheets via stamping or injection molding. This related application requires for large-area, fine micro-texturing onto the martensitic stainless steel mold-die materials. A new method other than laser-machining, micro-milling or micro-EDM is awaited for further advancement of this micro-texturing. In the present paper, a new micro-texturing method is developed on the basis of the plasma assisted nitriding to transform the two-dimensionally designed micro-patterns to the three dimensional micro-textures in the martensitic stainless steels. First, original patterns are printed onto the surface of stainless steel molds by using the dispenser or the ink-jet printer. Then, the masked mold is subjected to high density plasma nitriding; the un-masked surfaces are nitrided to have higher hardness, 1400 Hv than the matrix hardness, 200 Hv of stainless steels. This nitrided mold is further treated by sand-blasting to selectively remove the soft, masked surfaces. Finally, the micro-patterned martensitic stainless steel mold is fabricated as a tool to duplicate these micro-patterns onto the plastic materials by the injection molding.

Original languageEnglish
Article number2015004
JournalManufacturing Review
Volume2
DOIs
Publication statusPublished - 2015

Fingerprint

Martensitic stainless steel
Texturing
Nitriding
Plasmas
Injection molding
Stainless steel
Hardness
Ink jet printers
Dispensers
Plasma density
Milling (machining)
Stamping
Molds
Blasting
Machining
Sand
Textures
Plastics
Lasers
Polymers

Keywords

  • Martensitic stainless steel
  • Mask-printing
  • Micro-texturing
  • Mold-die for injection molding
  • Plasma nitriding
  • Sand-blasting

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

Cite this

Plasma assisted nitriding for micro-texturing onto martensitic stainless steels ∗. / Katoh, Takahisa; Aizawa, Tatsuhiko; Yamaguchi, Tetsuya.

In: Manufacturing Review, Vol. 2, 2015004, 2015.

Research output: Contribution to journalArticle

Katoh, Takahisa ; Aizawa, Tatsuhiko ; Yamaguchi, Tetsuya. / Plasma assisted nitriding for micro-texturing onto martensitic stainless steels ∗. In: Manufacturing Review. 2015 ; Vol. 2.
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