Study on Properties of Anti - Galling Phosphating Films for Threads of Oil Drilling Tools

SHA Chengbin, JIANG Yi

doi:10.16577/j.issn.1001-1560.2022.0289

Materials Protection >

2022 , Vol. 55 >Issue 10: 139 - 142

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0289

Study on Properties of Anti - Galling Phosphating Films for Threads of Oil Drilling Tools

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(Sinopec Jiangzuan Petroleum Machinery Co.,Ltd.,Wuhan 430223,China)

Received date: 2022-05-08

Revised date: 2022-06-07

Accepted date: 2022-07-06

Online published: 2023-12-23

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Abstract

In order to confirm the performance of different phosphating films and their influences on the anti-galling effect of the threads of petroleum drilling tools,the comprehensive anti-galling performance including appearance,film thickness,film weight,surface roughness,adhesion,corrosion resistance,crystal morphology and size,makeup and breakout test results of the films obtained through normal temperature zinc-calcium phosphating,low temperature zinc phosphating,mid temperature zinc-manganese phosphating and mid temperature zinc-calcium phosphating were studied.Results showed that the “sand blasting &immersed phosphating”process could ensure the performance of anti-galling phosphating film well.The phosphating films with high film thickness and weight,fine phosphating crystals and good adhesion had better corrosion resistance and antifriction-lubrication effect.The films obtained through low temperature zinc phosphating and mid temperature zinc-manganese phosphating could both meet the anti-galling application requirements of oil drilling tool threads,and low temperature zinc phosphating film was more suitable for the anti-galling of the threads of oil drilling tools due to its process characteristics of low cost,high efficiency and low emission.

Key words： oil drilling tool; phosphating film properties; anti-galling;makeup and breakout; antifriction-lubrication

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SHA Chengbin, JIANG Yi . Study on Properties of Anti - Galling Phosphating Films for Threads of Oil Drilling Tools[J]. Materials Protection, 2022 , 55(10) : 139 -142 . DOI: 10.16577/j.issn.1001-1560.2022.0289

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