| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10673381 | CIRP Annals - Manufacturing Technology | 2015 | 4 Pages |
Abstract
The performance of lubrication coatings developed for replacing zinc phosphate conversion coating in multi-stage cold forging is evaluated with a newly devised testing method. In this test, the coated film on the side surface of the billet is first subjected to free expansion in upsetting and then squeezed in ironing with bearing balls. It is revealed that the coated film is peeled off in the upsetting stage, and cannot show good anti-galling ability in the subsequent stage. The billet surface treated by wet blasting before coating improves the performance by preventing the coated film from peeling off.
Keywords
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Physical Sciences and Engineering
Engineering
Industrial and Manufacturing Engineering
Authors
Z.G. Wang, S. Komiyama, Y. Yoshikawa, T. Suzuki, K. Osakada,