Development of shrinkage-fit die coated with film possessing low friction coefficient for compacting metal powders
-
- SUGAYA Yoshimi
- Graduate student, Ibaraki University, Japan Hitachi Powdered Metals Co., Ltd.
-
- MOTOHASHI Yoshinobu
- Research Center for Superplasticity, Ibaraki University
書誌事項
- タイトル別名
-
- Development of Shrinkage-Fit Die Coated with Film Possessing<br>Low Friction Coefficient for Compacting Metal Powders
この論文をさがす
抄録
A surface-coated die that can reduce the ejection force needed to obtain green compact has been developed to produce powder metallurgical parts constantly without the occurrence of scuffing or cracking. A plasma CVD (Chemical Vapor Deposition) method, which is able to be performed at temperatures below 823K, was applied to shrinkage-fit dies. Optimal conditions for the surface-finishing treatment of the die and die holder were examined. For a shrinkage-fit die composed of a die holder made of a steel tempered at a temperature equal to or higher than the PCVD treatment temperature, there was little effect of the PCVD treatment on the shrink-fitting force and the hardness of the die holder. However when a die holder made of a steel tempered at 453K was used for the shrinkage-fit die, the shrink-fitting force was increased and the hardness of the die holder was decreased by the PCVD treatment. Taking these results into consideration, a surface-coated die having an optimal combination of the die and die holder materials was devised and its performance was evaluated. The ejection force exhibited by the surface-coated dies decreased in the following order: non-coated die>TiN>TiCN>DLC-coated dies. That is to say, all surface coatings examined were found to be effective in reducing the ejection force.
収録刊行物
-
- 塑性と加工
-
塑性と加工 48 (553), 110-114, 2007
一般社団法人 日本塑性加工学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390282681476070528
-
- NII論文ID
- 130004488091
- 10018291763
-
- NII書誌ID
- AN00135062
-
- COI
- 1:CAS:528:DC%2BD2sXjslCjtbY%3D
-
- ISSN
- 18820166
- 00381586
-
- NDL書誌ID
- 8726208
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可