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公开(公告)号：EP2128506A4
公开(公告)日：2011-05-11
申请号：EP08720987
申请日：2008-02-28
发明人： KIMOTO MASANARI , GOTO KUNIO , TAKAHASHI MASARU , FUKUI KUNIHIRO , NAGASAKU SHIGEO , IMAI RYUICHI , ONISHI SHIGEO , IKEGAMI HIROAKI
IPC分类号： F16L15/04 , C10M101/02 , C10M103/02 , C10M159/06 , C10M159/24 , C10N10/04 , C10N30/06 , C10N40/00 , C10N50/08 , C23C26/00 , C25D3/58 , C25D5/12 , C25D7/00 , C25D7/04
CPC分类号： C23C28/00 , C10M111/04 , C10M169/042 , C10M2201/0413 , C10M2201/0423 , C10M2203/1006 , C10M2205/143 , C10M2205/163 , C10M2209/1003 , C10M2219/046 , C10N2240/22 , C10N2250/14 , C10N2250/18 , C23C28/021 , C23C28/023 , C23C30/00 , C25D5/10 , C25D5/12 , C25D5/36 , C25D7/10 , E21B17/042 , F16L15/001 , F16L15/08 , F16L58/182 , C10N2210/02
摘要： A pin-box type threaded joint for steel tubes having a contact surface (30) including a threaded portion and a nonthreaded metal-to-metal contact portion has improved leak resistance, galling resistance, and corrosion resistance particularly to crevice corrosion. The contact surface of at least one of the pin and the box is coated with a first plating layer (34) made of a Cu-Zn alloy or a Cu-Zn-M1 alloy (wherein M1 is at least one element selected from Sn, Bi, and In). Optionally, an undercoat (32) of one or both of a Ni plating layer (32a) and a Cu plating layer (32b) and an overcoat of a Sn-M2 alloy plating layer (36) (wherein M2 is one or more elements selected from Bi, In, Ni, Zn, and Cu) may be formed below and above the first layer, respectively. A solid lubricating coating (38a) and a viscous liquid or semisolid lubricating coating (38b) may also be formed atop the plating layer as a lubricating coating (38).
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2.发明公开
公开(公告)号：EP2438099A4
公开(公告)日：2012-11-28
申请号：EP10783485
申请日：2010-06-01
发明人： NAGAREO TOMOMITSU , KAMEDA YOSHINORI , MATSUMOTO KEISHI , KAMIMURA TAKAYUKI , TAKAHASHI MASARU , GOTO KUNIO , IMAI RYUICHI
IPC分类号： C08F290/06 , C08F265/06 , C09D5/08 , C09D163/10 , C09D167/07 , C09D175/16 , F16L15/04 , F16L58/04
CPC分类号： F16L15/001 , C08F290/06 , C09D5/086 , C09D175/16 , Y10T428/31692 , C08F222/1006 , C08F220/12 , C08F230/02
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公开(公告)号：EP2210931A4
公开(公告)日：2011-09-21
申请号：EP08843819
申请日：2008-10-31
发明人： GOTO KUNIO , IMAI RYUICHI , FUKUMOTO SHIGEKI , YAMAMOTO YASUHIRO
IPC分类号： C10M169/04 , C10N10/04 , C10N30/06 , C10N30/12 , C10N50/10 , C10N80/00 , F16L15/00 , F16L15/08 , F16L58/18
CPC分类号： F16L15/08 , C10M111/06 , C10M169/04 , C10M2201/041 , C10M2201/0413 , C10M2201/042 , C10M2201/0423 , C10M2201/061 , C10M2201/065 , C10M2201/066 , C10M2205/143 , C10M2205/16 , C10M2205/163 , C10M2205/18 , C10M2205/183 , C10M2205/20 , C10M2205/203 , C10M2207/126 , C10M2207/203 , C10M2207/26 , C10M2209/12 , C10M2209/123 , C10M2213/062 , C10N2210/02 , C10N2230/06 , C10N2230/12 , C10N2240/22 , C10N2250/08 , C10N2250/10 , C10N2250/121 , C10N2280/00 , F16L15/001 , F16L58/182
摘要： A lubricating coating which is free from harmful heavy metals is formed on a premium threaded joint for pipes constituted by a pin and a box each having a contact surface comprising a threaded portion and an unthreaded metal contact portion (a sealing surface and shoulder) in order to provide the joint with galling resistance, gas-tightness, and anticorrosive properties such that the unthreaded metal contact portion is prevented from yielding even when the joint is made up with a high torque. The lubricating coating comprises one or both of a rosin and calcium fluoride; metal soap; wax; and a basic metal salt of an aromatic organic acid, and preferably it further includes a lubricating powder, magnesium carbonate, and/or a carbohydrate, particularly a cyclodextrin.
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公开(公告)号：EP1736697A4
公开(公告)日：2012-05-02
申请号：EP05728760
申请日：2005-04-05
发明人： GOTO KUNIO , IMAI RYUICHI , OGAWA YASUHIRO , MINAMI JUNICHI
IPC分类号： F16L15/00 , F16L15/04 , C10M103/00 , C10M103/02 , C10M103/04 , C10M103/06 , C10M125/00 , C10M145/20 , C10M149/18 , C10N10/02 , C10N10/04 , C10N40/00 , C10N50/08 , C10N80/00 , E21B17/00 , E21B17/042 , F16L15/08 , F16L58/18
CPC分类号： C10M103/00 , C10M125/00 , C10M2201/041 , C10M2201/05 , C10M2201/062 , C10M2201/066 , C10M2201/103 , C10N2240/00 , C10N2250/08 , C10N2280/00 , E21B17/006 , E21B17/042 , F16L15/001 , F16L15/006 , F16L15/08 , F16L58/182
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公开(公告)号：EP1864048A4
公开(公告)日：2011-03-30
申请号：EP06731115
申请日：2006-03-29
发明人： IMAI RYUICHI , GOTO KUNIO
IPC分类号： F16L15/04
CPC分类号： C10M177/00 , C10M111/04 , C10M2201/0413 , C10M2201/0623 , C10M2201/1053 , C10M2205/163 , C10M2207/0285 , C10M2207/2623 , C10M2209/0845 , C10M2209/1045 , C10M2219/0463 , C10N2210/02 , C10N2240/22 , C10N2250/10 , C10N2250/121 , C10N2250/14 , C10N2270/00 , C10N2280/00 , E21B17/042 , F16L15/004 , F16L58/182
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公开(公告)号：EP1844255A4
公开(公告)日：2008-05-21
申请号：EP06700861
申请日：2006-01-11
申请人： SUMITOMO METAL IND
发明人： IMAI RYUICHI , GOTO KUNIO , TAKANASHI KAORU , OGAWA YASUHIRO
CPC分类号： C10M125/02 , C10M125/22 , C10M2201/041 , C10M2201/065 , C10M2201/066 , C10N2240/22 , C10N2250/18 , C23C28/00 , C23C28/321 , C23C28/322 , C23C28/3225 , C23C28/324 , C23C28/34 , C23C28/345 , C23C28/347 , E21B17/042 , E21B17/08 , F16B33/008 , F16B33/06 , F16L15/004 , F16L58/182
摘要： A threaded joint for steel pipes comprises a pin (1) and a box (2) each having a threaded portion (3a or 3b) and an unthreaded metal-to-metal contact portion (4a or 4b) as contact surfaces which contact each other when the joint is fastened. The contact surfaces (3a and 4a and/or 3b and 4b) of at least one of the pin (1) and the box (2) are coated with a lower layer of a solid lubricating coating containing a solid lubricating powder (e.g., molybdenum disulfide, tungsten disulfide, or graphite) and a binder (e.g., an epoxy or other organic resin) and an upper layer of a solid corrosion protective coating formed by an organic resin which does not contain solid particles.
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