Evaluation of tribological characteristics on cold forging die by press-in punch test

Susumu Mishima, Akira Yoshida, M. Fujii, Masanori Seki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Investigation on friction coefficient under high pressure such as cold forging was carried out by press-in punch test. Work specimen was made of chromium-molybdenum steel SCM415, and punch specimens were made of four kinds of tool steels, and cemented carbide as a die materials. Punches were finished by #240, #800 emery papers or lapping. Four kinds of oils and a lubricant were examined about frictional characteristics. Press-in force versus press-in depth was measured by press-in punch test. Friction coefficient was tried to calculate by numerical calculus of press-in force. PVD treatments had good effect of low seizure properties. Especially, DLC treatment was free from siezure.

Original languageEnglish
Pages (from-to)143-151
Number of pages9
JournalToraibarojisuto/Journal of Japanese Society of Tribologists
Issue number2
Publication statusPublished - Apr 24 2003

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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