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Special cobalt-based wear-resistant alloy powder for laser remanufacture of drilling jar

A technology for laser remanufacturing and wear-resistant alloys, applied in the field of alloy powders for laser cladding and special cobalt-based wear-resistant alloy powders for laser remanufacturing, can solve the problem of not seeing cobalt-based wear-resistant alloy powder materials, etc. High hardness, lower melting point of alloy, increase anti-oxidation effect

Active Publication Date: 2012-11-07
上海大陆天瑞激光表面工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] After searching and checking by the applicant: there is no precedent in China, and there is no relevant report abroad about the cobalt-based wear-resistant alloy powder material specially used for large-area laser remanufacturing of the working surface of the journal of the drilling jar. There is no such alloy powder product for laser remanufacturing with special properties and special properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 5000W CO with stable cladding performance 2 The laser is used for laser cladding on the failed domestic while-drilling jar of a domestic company. The mass percentages of the designed cobalt-based wear-resistant alloy powder alloy elements are: C: 0.9%; Cr: 33%; W: 7.8%; Mo: 3.2%; Ni: 1.0%; Mn: 0.3%; Si: 2.0%; Fe: 1.8%; B: 1.8%; Ce: 0.16%; Hf: 0.3%; Zr: 0.08%;

[0029] The cladding process parameters are: power: 4500W, focal length: 340mm, spot diameter: 3.6mm, scanning speed: 380mm / min, powder thickness: 0.8mm, lap rate: 35%.

Embodiment 2

[0031] 5000W CO with stable cladding performance 2 The laser is used for laser cladding on the imported LWD jar that has failed in a domestic company. The mass percentages of the designed cobalt-based wear-resistant alloy powder alloy elements are: C: 0.8%; Cr: 34%; W: 8.2%; Mo: 3.2%; Ni: 1.0%; Mn: 0.3%; Si: 2.0%; Fe: 1.8%; B: 2.0%; Ce: 0.16%; Hf: 0.3%; Zr: 0.08%;

[0032] The cladding process parameters are: power: 4500W, focal length: 360mm, spot diameter: 3.6mm, scanning speed: 400mm / min, powder thickness: 0.8mm, lap rate: 35%.

Embodiment 3

[0034] 5000W CO with stable cladding performance 2 The laser is used for laser cladding on the failed domestic while-drilling jar of a company in Guizhou. The mass percentages of the designed cobalt-based wear-resistant alloy powder alloy elements are: C: 0.95%; Cr: 35%; W: 8.8%; Mo: 3.2%; Ni: 1.2%; Mn: 0.5%; Si: 2.4%; Fe: 1.5%; B: 2.0%; Ce: 0.2%; Hf: 0.35%; Zr: 0.1%;

[0035] The cladding process parameters are: power: 4600W, focal length: 370mm, spot diameter: 3.6mm, scanning speed: 450mm / min, powder thickness: 1.0mm, lap rate: 35%.

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Abstract

The invention relates to special cobalt-based wear-resistant alloy powder for laser remanufacture of a drilling jar. The powder is characterized by comprising the following components in percentage by weight: 0.6-1.0% of C, 32-36% of Cr, 7.5-9.5% of W, 3.0-3.6% of Mo, 0.8-1.2% of Ni, 0.2-0.6% of Mn, 2.0-2.4% of Si, 1.2-2.0% of Fe, 1.6-2.2% of B, 0.1-0.2% of Ce, 0.25-0.4% of Hf, 0.06-0.1% of Zr and the balance of Co. The cobalt-based wear-resistant alloy powder provided by the present invention is exclusively used in laser-cladding large-area failure working surfaces of the shaft journal of the drilling jar; and by cladding the alloy powder material, the drilling jar is restored to use, and the oxidation resistance, corrosion resistance and erosion and wear resistance are improved, thus effectively solving the difficulty in the repair of the failure shaft journal of the drilling jar.

Description

technical field [0001] The invention relates to an alloy powder for laser cladding, in particular to an alloy powder with high hardness, oxidation resistance, corrosion resistance, erosion and wear resistance, excellent cladding performance, and suitable for cladding the journal of drilling jar jars for drilling equipment. The special cobalt-based wear-resistant alloy powder for laser remanufacturing belongs to the technical field of laser cladding. Background technique [0002] During drilling operations, due to complex geological structures (such as borehole wall collapse, plastic flow and extrusion of formations in open holes) and improper technical measures (such as excessive pump stop time, drill bit bagging, etc.), blocking of drilling tools often occurs Drill, the jar is one of the effective tools to relieve stuck drill accidents. [0003] At present, the jars used in China mainly come from Baker, Bowen, Rocan, Cougar, Guizhou Gaofeng Machinery Factory, Beijing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10B23K26/34C22C19/07
Inventor 陈常义陈江付键伟
Owner 上海大陆天瑞激光表面工程有限公司
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