发明申请
- 专利标题: TUBULAR THREADED JOINT HAVING IMPROVED LOW TEMPERATURE PERFORMANCE
- 专利标题(中): 管状螺纹接头具有改善的低温性能
-
申请号: US13881446申请日: 2011-11-04
-
公开(公告)号: US20130277961A1公开(公告)日: 2013-10-24
- 发明人: Kunio Goto , Masayoshi Sasaki
- 申请人: Kunio Goto , Masayoshi Sasaki
- 申请人地址: FR Aulnoye-Aymeries JP Tokyo
- 专利权人: VALLOUREC MANNESMANN OIL & GAS FRANCE,NIPPON STEEL & SUMITOMO METAL CORPORATION
- 当前专利权人: VALLOUREC MANNESMANN OIL & GAS FRANCE,NIPPON STEEL & SUMITOMO METAL CORPORATION
- 当前专利权人地址: FR Aulnoye-Aymeries JP Tokyo
- 优先权: JP2010-248789 20101105
- 国际申请: PCT/JP2011/076018 WO 20111104
- 主分类号: F16L15/08
- IPC分类号: F16L15/08 ; B05D3/06 ; B05D3/00
摘要:
In order to provide a tubular threaded joint constituted by a pin and a box each having threads and an unthreaded metal contact portion with excellent galling resistance and gas tightness even in extremely cold environments at −60° C. to −20° C. and rust preventing properties without using a compound grease, a thermoplastic solid lubricating coating containing low friction copolymer particles made from an acrylic-silicone copolymer and preferably further containing a solid lubricant (e.g., graphite) in a thermoplastic polymer matrix (e.g., selected from polyolefin resins and ethylene-vinyl acetate copolymer resins) is formed on the surface of the threads and unthreaded metal contact portion of a pin and/or a box.