Laser surface cladding treatment technology for tooth surface of roller bit

A roller cone bit and treatment process technology, which is applied in the field of laser surface cladding treatment process, can solve the problems of lower comprehensive performance than diamond, low strength and high cost, so as to improve the operation efficiency of drilling rigs, strengthen the tooth surface of the roller cone bit, and solve the problem of overcrowding The effect of premature baldness

Inactive Publication Date: 2014-04-23
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

Diamond has very high hardness and good comprehensive wear resistance, so it has played an irreplaceable role in high-hard rock drill teeth. However, the preparation process of diamond buttons is complex, high cost, low strength, and low impact toughness. These unfavorable factors limit the its application
Cemented carbide has high strength and hardness, good red hardness, good wear resistance, small thermal expansion coefficient, good chemical stability, and compared with diamond, the cost of cemented carbi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A laser surface cladding treatment process for the tooth surface of a roller cone bit, comprising the following steps:

[0041] (1) Use cleaning agent to degrease and derust the tooth surface of the roller cone bit at room temperature, and clean it with alcohol;

[0042] (2) Inspect the tooth surface of the roller cone bit with the coloring flaw detection method to ensure that there are no cracks, pores, inclusions and other defects in the parts to be processed;

[0043] (3) Select nickel-based alloy powder as the bottom layer of the tooth surface of the roller cone bit, adjust the powder feeding device, so that the alloy powder from the automatic powder feeding head just falls into the laser molten pool, adjust the powder feeding amount, so that the alloy powder coating The thickness reaches 1.5-2mm;

[0044] (4) Select a high-power CO2 laser, use the CNC machine tool as the workbench, use the plexiglass burning spot method to select the best laser mode, and then use ...

Embodiment 2

[0071] A laser surface cladding treatment process for the tooth surface of a roller cone bit, comprising the following steps:

[0072] (1) Use cleaning agent to degrease and derust the tooth surface of the roller cone bit at room temperature, and clean it with alcohol;

[0073] (2) Inspect the tooth surface of the roller cone bit with the coloring flaw detection method to ensure that there are no cracks, pores, inclusions and other defects in the parts to be processed;

[0074] (3) Select nickel-based alloy powder as the bottom layer of the tooth surface of the roller cone bit, adjust the powder feeding device, so that the alloy powder from the automatic powder feeding head just falls into the laser molten pool, adjust the powder feeding amount, so that the alloy powder coating The thickness reaches 1.5-2mm;

[0075] (4) Select a high-power CO2 laser, use the CNC machine tool as the workbench, use the plexiglass burning spot method to select the best laser mode, and then use ...

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Abstract

The invention discloses a laser surface cladding treatment technology for the tooth surface of a roller bit, which comprises the following steps: (1) performing pretreatment on the tooth surface of the roller bit; (2) inspecting the tooth surface of the roller bit by a dye penetrant inspection process; (3) adopting the nickel base alloy powder as a base coat of the tooth surface of the roller bit; (4) cladding a base alloy by high-power CO2 laser complete equipment; (5) adopting spherical WC and Ni-Cr-B-Si self-fusion alloy mixed alloy powder as a working layer of the tooth surface of the roller bit; (6) cladding the spherical WC and Ni-Cr-B-Si mixed powder by a high-power laser in two processing modes of narrow-band cladding processing and wide-band cladding processing; and (7) after the cladding, performing flaw detection inspection to ensure that the surface of the processed part is flat. The technology provided by the invention strengthens the tooth surface of the roller bit, prolongs the service life of the roller bit, basically solves the problems of early bald-grinding, peeling and the like of the roller bit, improves the operation efficiency of a drilling machine and reduces the production cost.

Description

technical field [0001] The invention relates to the field of surface strengthening technology of a roller cone bit, in particular to a laser surface cladding treatment process for the tooth surface of a roller cone bit. Background technique [0002] With the continuous growth of people's demand for energy utilization, the exploration and development of oil and gas resources in my country are also developing continuously, which makes people put forward higher requirements for the drilling performance of drilling equipment. The roller cone drill is the main rock-breaking tool for drilling. It produces crushing and sliding shearing between the hard rock under high drilling pressure and is accompanied by huge impact and strong erosion of cuttings mud. Materials present serious challenges. Because the service environment of the roller cone bit is the huge impact of the gravel and the strong erosion of the rocky mud, the material for the manufacture of the roller cone bit must ha...

Claims

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Application Information

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