Abstract
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 language | English |
|---|---|
| Pages (from-to) | 143-151 |
| Number of pages | 9 |
| Journal | Toraibarojisuto/Journal of Japanese Society of Tribologists |
| Volume | 48 |
| Issue number | 2 |
| Publication status | Published - Apr 24 2003 |
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry