Method for preparing WC cemented carbide anti-wear layer on petroleum drilling tool stabilizer through laser cladding

A laser cladding and cemented carbide technology, applied in the direction of metal material coating process, coating, etc., can solve the problem of not seeing, and achieve the effect of improving wear resistance, good bonding strength, and reducing crack formation

Inactive Publication Date: 2013-07-10
SHENYANG DALU LASER COMPLETE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for other specific equipment components, such as special structures such as oil drilling tool stabilizers, the existing laser cladding process is obviously unable to adapt
[0011] After searching and checking by

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The process of preparing a wear-resistant composite coating by rapid laser cladding on the surface of an oil drilling tool stabilizer of the present invention includes the following process.

[0052] 1. Early machining.

[0053] The part that needs to be laser clad is machined from ?190mm to ?182mm.

[0054] 2. Surface pretreatment.

[0055] The processed parts were degreased with absolute ethanol at room temperature.

[0056] 3. Selection of alloy powder and adjustment of automatic powder feeding device.

[0057] The IN625 alloy powder with good toughness, high strength and good metallurgical compatibility with the matrix is ​​selected as the base layer, and the spherical WC and Ni-Cr-B-Si self-fluxing alloy powder with high wear resistance and high temperature resistance are selected as the working layer. , adjust the powder feeding device, so that the alloy powder from the automatic powder feeding head just falls into the laser molten pool, adjust th...

Embodiment 2

[0074] The process of preparing a wear-resistant composite coating by rapid laser cladding on the surface of an oil drilling tool stabilizer of the present invention includes the following process.

[0075] 1. Early machining.

[0076] The part that needs to be laser clad is machined from ?190mm to ?184mm.

[0077] 2. Surface pretreatment.

[0078] The processed parts were degreased with absolute ethanol at room temperature.

[0079] 3. Selection of alloy powder and adjustment of automatic powder feeding device.

[0080] The nickel-based alloy powder with good toughness, high strength and good metallurgical compatibility with the matrix is ​​selected as the base layer, and the spherical WC and Ni-Cr-B-Si mixed alloy powder with high wear resistance and high temperature resistance is selected as the working layer. The powder feeding device makes the alloy powder from the automatic powder feeding head just fall into the laser molten pool, and adjusts the powder ...

Embodiment 3

[0097] The process of preparing a wear-resistant composite coating by rapid laser cladding on the surface of an oil drilling tool stabilizer of the present invention includes the following process.

[0098] 1. Early machining.

[0099] The part that needs to be laser clad is machined from ?190mm to ?180mm.

[0100] 2. Surface pretreatment.

[0101] The processed parts were degreased with absolute ethanol at room temperature.

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

[0103] The nickel-based alloy powder with good toughness, high strength and good metallurgical compatibility with the matrix is ​​selected as the base layer, and the spherical WC and Ni-Cr-B-Si mixed alloy powder with high wear resistance and high temperature resistance is selected as the working layer. The powder feeding device makes the alloy powder from the automatic powder feeding head just fall into the laser molten pool, and adjusts the powder f...

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PUM

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Abstract

The invention relates to a method for preparing a WC cemented carbide anti-wear layer on a petroleum drilling tool stabilizer through laser cladding. The method is characterized in that a high-power laser is utilized to clad a good-toughness priming transition layer forming a metallurgic combination with a matrix on a shell surface through rapid laser scanning, and spherical WC and Ni-Cr-B-Si mixed alloy powder having good wear and corrosion resistances is prepared on the priming alloy surface through laser cladding. The method which allows the WC cemented carbide coat forming the metallurgic combination with the matrix to be prepared substantially improves the wear, corrosion and hot tearing resistances of the surface of the matrix; and the above laser cladding technology has the characteristics of no pollution to the environment, no radiation, low noise, high productivity, low energy consumption, small cladding layer working allowance, high yield, low comprehensive cost and the like.

Description

technical field [0001] The invention relates to a method for repairing and remanufacturing an oil drilling tool, in particular to a method for preparing a WC hard alloy wear-resistant layer by laser cladding on an oil drilling tool stabilizer, and belongs to the technical field of laser cladding. Background technique [0002] 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 m...

Claims

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Application Information

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IPC IPC(8): C23C24/10
Inventor 陶兴启黄旭东陈海涛崔忠宝王悦宾
Owner SHENYANG DALU LASER COMPLETE EQUIP
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