Laser-cladding processing method of oil cylinder's chamfering part

A laser cladding and processing method technology, applied in the field of laser cladding processing, can solve the problems of increasing wear resistance, rust, affecting the appearance of the oil cylinder, etc., to achieve the effect of avoiding powder slipping and ensuring the connection effect

Inactive Publication Date: 2016-08-24
CHONGQING JIANGLU LASER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the laser cladding operation of the oil cylinder, because the chamfer has a certain inclination, the prefabricated alloy powder is easy to slip, and the cladding layer is also easy to crack during cladding. The connection effect of the surface cladding layer is not good, so the chamfering part of the oil cylinder is generally not selected for cladding operation, but if the chamfering part of the oil cylinder is not clad, the oil cylinder will be rusted during the underground use, not only It affects the appearance of the oil cylinder. When dust is reduced in the mine, the dust water will form rust water on the chamfer, and the rust water will stay along the axial direction of the oil cylinder, making impurities stay on the surface of the oil cylinder. When the oil cylinder moves, it will increase the wear resistance. Accelerate the failure of the seal, so there is an urgent need for a processing method that can perform laser cladding on the chamfer of the cylinder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A laser cladding processing method for a chamfering part of an oil cylinder, comprising the following steps:

[0016] 1) Pre-treat the chamfer of the oil cylinder; pre-treatment includes cutting, grinding and decontamination;

[0017] 2) Use wide-spot gas laser equipment to clad the upper alloy layer on the chamfer of the oil cylinder. During cladding, the alloy powder is directly sent to the laser focus. Each cladding is 1.2 laps, and the spot feeds 2mm after cladding one lap, and then For the second round of melting, the number of cladding depends on the size of the chamfer until the cladding reaches the cylindrical surface of the oil cylinder; the spot width of the wide-spot gas laser equipment is 10mm, and the thickness of the alloy layer is 0.5mm;

[0018] 3) Cladding of the outer circle of the oil cylinder is started at 1 / 4 of the distance from the cylindrical surface of the cylinder to the chamfering position to ensure that the chamfering position has sufficient ...

Embodiment 2

[0021] A laser cladding processing method for a chamfering part of an oil cylinder, comprising the following steps:

[0022] 1) Pre-treat the chamfer of the oil cylinder; pre-treatment includes cutting, grinding and decontamination;

[0023] 2) Use wide-spot gas laser equipment to clad the upper alloy layer on the chamfer of the oil cylinder. During cladding, the alloy powder is directly sent to the laser focus, and each cladding is 1.2 laps. After one lap of cladding, the spot feeds 3mm, and then For the second round of melting, the number of cladding depends on the size of the chamfer until the cladding reaches the cylindrical surface of the oil cylinder; the spot width of the wide-spot gas laser equipment is 12mm, and the thickness of the alloy layer is 3mm;

[0024] 3) Cladding of the outer circle of the oil cylinder is started at 1 / 4 of the distance from the cylindrical surface of the cylinder to the chamfering position to ensure that the chamfering position has sufficien...

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Abstract

The invention discloses a laser-cladding processing method of an oil cylinder's chamfering part. The method comprises the following steps: 1) pretreating an oil cylinder's chamfering part; 2) fusion-covering the oil cylinder's chamfering part with an alloy layer by wide-spot gas laser equipment while directly sending powdered alloy to the laser focus position, spot-feeding for 2mm after each fusion-covering for 1.2 circles, and fusion-covering the second circle until fusion-covering to the cylindrical surface of the oil cylinder; 3) fusion-covering excircle of the oil cylinder at 1 / 4 of the distance from the cylindrical surface of the oil cylinder to the chamfer position; and 4) sealing the single circle at the highest point of the last single-channel fusion-covering face of the oil cylinder's chamfer. Due to simultaneous powder feeding and by directly sending the powdered alloy to the laser focus position, powder can be effectively avoided from falling, and cladding layer cracking caused by large shrinkage stress during fusion at the same position and cladding layer cracking caused by excessive temperature difference can be avoided. By sealing the single circle at the highest point of the last single-channel fusion-covering face, joining effect of cladding layers is enhanced.

Description

technical field [0001] The invention relates to a laser cladding processing method, in particular to a laser cladding processing method for an oil cylinder chamfering part. Background technique [0002] In the laser cladding operation of the oil cylinder, because the chamfer has a certain inclination, the prefabricated alloy powder is easy to slip, and the cladding layer is also easy to crack during cladding. The connection effect of the surface cladding layer is not good, so the chamfering part of the oil cylinder is generally not selected for cladding operation, but if the chamfering part of the oil cylinder is not clad, the oil cylinder will be rusted during the underground use, not only It affects the appearance of the oil cylinder. When dust is reduced in the mine, the dust water will form rust water on the chamfer, and the rust water will stay along the axial direction of the oil cylinder, making impurities stay on the surface of the oil cylinder. When the oil cylinder...

Claims

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Application Information

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IPC IPC(8): C23C24/10
Inventor 彭朝东
Owner CHONGQING JIANGLU LASER TECH
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