发明名称 |
Pipe screw joint with lubricating film |
摘要 |
<p>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.</p> |
申请公布号 |
AU2008319808(A1) |
申请公布日期 |
2009.05.07 |
申请号 |
AU20080319808 |
申请日期 |
2008.10.31 |
申请人 |
SUMITOMO METAL INDUSTRIES, LTD. |
发明人 |
SHIGEKI FUKUMOTO;YASUHIRO YAMAMOTO;RYUICHI IMAI;KUNIO GOTO |
分类号 |
C10M169/00;C10M109/00;C10M117/00;C10M125/02;C10M125/10;C10M125/18;C10M129/28;C10M145/40;C10M159/02;C10M159/06;C10M159/20;C10N20/00;C10N30/00;C10N30/06;C10N40/00;C10N50/10;F16L15/04 |
主分类号 |
C10M169/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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