Method for preparing WC (Wolfram Carbide) cemented carbide wearing layer on surface of petroleum drilling tool stabilizer through laser cladding

A laser cladding and cemented carbide technology, applied in metal material coating process, coating and other directions, can solve problems such as shortened service life of drilling tools, reduced wear resistance of surfacing layer, peeling, etc., to improve wear resistance. Corrosion performance and service life, reduce crack formation, improve the effect of shell surface wear resistance

Inactive Publication Date: 2014-01-01
武汉团结点金激光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inlaid and brazed hard alloy process, due to the high friction of the stabilizer during work, the high brittleness of the WC hard alloy and the low bonding s

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0062] Example 1

[0063] In the embodiment of the present invention, a method for preparing a WC hard alloy wear-resistant layer by laser cladding on the surface of an oil drilling tool stabilizer includes the following processes:

[0064] (1) Early stage machine addition

[0065] Increase the part to be laser cladding from 190mm to 184mm;

[0066] (2) Surface pretreatment

[0067] Degrease the processed parts with absolute ethanol at room temperature;

[0068] (3) Selection of alloy powder and adjustment of automatic powder feeding device

[0069] Select IN625 nickel-based alloy powder with good toughness, high strength and good metallurgical compatibility with the matrix as the base layer; the chemical composition of IN625 nickel-based alloy powder by weight percentage is: C: 0.03%, Cr: 21.5%, Fe: 1.4% , Mo: 9%, Si: 0.4%, Nb: 3.8%, the balance is Ni;

[0070] Select high wear resistance, high temperature resistant spherical WC and Ni-Cr-B-Si self-fluxing alloy mixed alloy powder an...

Example Embodiment

[0096] Example 2

[0097] In the embodiment of the present invention, a method for preparing a WC hard alloy wear-resistant layer by laser cladding on the surface of an oil drilling tool stabilizer includes the following processes:

[0098] (1) Early stage machine addition

[0099] Increase the part that needs laser cladding from 190mm to 184mm;

[0100] (2) Surface pretreatment

[0101] Use absolute ethanol to degrease the processed parts at room temperature;

[0102] (3) Selection of alloy powder and adjustment of automatic powder feeding device

[0103] Select IN625 nickel-based alloy powder with good toughness, high strength and good metallurgical compatibility with the matrix as the base layer; the chemical composition of IN625 nickel-based alloy powder by weight percentage is: C: 0.03%, Cr: 21.5%, Fe: 1.4% , Mo: 9%, Si: 0.4%, Nb: 3.8%, the balance is Ni;

[0104] Select high wear resistance, high temperature resistant spherical WC and Ni-Cr-B-Si self-fluxing alloy mixed alloy powder...

Example Embodiment

[0130] Example 3

[0131] In the embodiment of the present invention, a method for preparing a WC hard alloy wear-resistant layer by laser cladding on the surface of an oil drilling tool stabilizer includes the following processes:

[0132] (1) Early stage machine addition

[0133] Increase the part that needs laser cladding from 190mm to 184mm;

[0134] (2) Surface pretreatment

[0135] Use absolute ethanol to degrease the processed parts at room temperature;

[0136] (3) Selection of alloy powder and adjustment of automatic powder feeding device

[0137] Select IN625 nickel-based alloy powder with good toughness, high strength and good metallurgical compatibility with the matrix as the base layer; the chemical composition of IN625 nickel-based alloy powder by weight percentage is: C: 0.03%, Cr: 21.5%, Fe: 1.4% , Mo: 9%, Si: 0.4%, Nb: 3.8%, the balance is Ni;

[0138] Select high wear resistance, high temperature resistant spherical WC and Ni-Cr-B-Si self-fluxing alloy mixed alloy po...

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Abstract

The invention discloses a method for preparing a WC (Wolfram Carbide) cemented carbide wearing layer on a surface of a petroleum drilling tool stabilizer through laser cladding. A tough bottoming transition layer which is in good metallurgical bonding with a matrix is formed on the surface of a shell in a fusion covering manner through rapid laser scanning by using a high-power laser, and mixture alloy powder of spherical WC and Ni-Cr-B-Si, which is wearing-resisting and excellent in corrosion resistance, is prepared on the surface of the bottoming alloy through laser cladding. The power, position, shape and the like of a laser beam of the method can be accurately controlled, selective area or even micro-area fusion covering is easy to realize, the dilution rate of coating components is low, the coating thickness can be accurately controlled, non-contact type treatment is adopted, and automatic control is easy to realize in the whole process; in addition, a laser cladding process is non-pollution on the environment, free of radiation and low in noise, has the characteristics that the productivity is high, the energy consumption is low, the cladding layer machining margin is small, the finished product rate is high, the comprehensive cost is low, and the like, and can be widely applied.

Description

[0001] technical field [0002] The invention belongs to the technical field of laser cladding, in particular to a method for preparing a WC hard alloy wear-resistant layer by laser cladding on the surface of an oil drilling tool stabilizer of a drilling device. Background technique [0003] Drilling tool stabilizer is an important tool for petroleum drilling tools to prevent well inclination changes. In the case of using a relatively rigid drill collar and applying a large bit pressure, a reasonable stabilizer will make the well inclination change rate and azimuth change rate smaller, Improve wellbore quality and drilling speed, reduce drilling cost. Since the outer diameter of the stabilizer and the borehole clearance are very small, the edge of the rotating drilling tool is easy to wear, especially in hard formations, the outer diameter will soon be worn out. Therefore, the outer diameter of the stabilizer is coated with wear-resistant materials to ensure wear The layer...

Claims

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Application Information

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IPC IPC(8): C23C24/10
Inventor 陶兴启黄旭东徐文
Owner 武汉团结点金激光科技有限公司
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