PIERCING AND ROLLING PLUG, METHOD OF REGENERATING SUCH PIERCING AND ROLLING PLUG, AND EQUIPMENT LINE FOR REGENERATING SUCH PIERCING AND ROLLING PLUG

• Main Authors: NAKAIKE, KOUJI, YOSHIKAWA, FUMIHITO, HIDAKA, YASUYOSHI, SHIMODA, KAZUHIRO, NAKAMORI, MASAHARU, HAYASHI, YOSHIHIKO, HIRASE, NAOYA, INAGE, TAKATERU, NAGAKITA, JYUN, AISAKA, TAKAYUKI, HIGASHIDA, YASUTO
• Format: Patent
• Language: English; French
• Published: 07.05.2009
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING

Since a coating film composed of an oxide such as Fe3O4 or FeO and Fe (metal) is formed on the surface of a base material by electric arc spraying of an iron wire principally comprising Fe, a piercing plug can attain excellent heat shielding properties and seizure prevention properties due to this coating film, and the plug can have a long life. When the plug is regenerated, a coating the film can be formed again by sequentially performing shot blasting and arc spraying on a just-pierced plug, and thus the plug can be regenerated in a short time at a low cost.