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Remanufacturing process for piston rod of supporting type coal mine hydraulic support through induction, preheating and cladding

A coal mine hydraulic pressure and induction preheating technology, which is applied in the direction of metal material coating process, coating, fusion spraying, etc., can solve the problems that affect the popularization and application, the workpiece is easy to deform, and the efficiency is low, so as to overcome high cost and high finished product The effect of high efficiency and low production cost

Inactive Publication Date: 2014-06-18
焦作市华科液压机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing laser cladding to repair the piston rod has problems such as high cost, low efficiency, and easy deformation of the workpiece, which seriously affects its popularization and application in this field.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The old part of the piston rod of the supporting coal mine hydraulic support with a diameter of 140mm,

[0027] 1) Cleaning and cleaning of old parts: Use ultrasonic waves to clean the old parts of the piston rod to remove surface attachments, oil stains and oxide layers, so as to clean the surface of the old parts.

[0028] 2) Judgment of remanufacturable characteristics: Using non-destructive testing methods such as gauges, intelligent magnetic memory metal diagnostic instruments, and stress detectors to conduct non-destructive testing on the old piston rod, it was found that the old piston rod was worn out and scratched. The maximum wear and scratch depth is 0.25mm.

[0029] 3) Rough machining of the old parts of the piston rod. The old piece is ground to an outer diameter of 139.5 mm and a roughness of Ra0.8.

[0030] 4) Use the induction preheating fusion coating process to coat the surface of the old piston rod with a wear-resistant and anti-corrosion coating: ...

Embodiment 2

[0041] 160mm diameter support type coal mine hydraulic support piston rod old parts,

[0042] 1) Cleaning and cleaning of old parts: Use ultrasonic waves to clean the old parts of the piston rod to remove surface attachments, oil stains and oxide layers, so as to clean the surface of the old parts.

[0043] 2) Judgment of remanufacturable characteristics: Using non-destructive testing methods such as gauges, intelligent magnetic memory metal diagnostic instruments, and stress detectors to conduct non-destructive testing on the old piston rod, it was found that the old piston rod was worn out and scratched. The maximum wear and scratch depth is 0.35mm.

[0044] 3) Rough machining of the old parts of the piston rod. The old part is ground to an outer diameter of 159.3mm and a roughness of Ra0.8.

[0045] 4) Use the induction preheating fusion coating process to coat the surface of the old piston rod with a wear-resistant and anti-corrosion coating.

[0046] (1) Protect the no...

Embodiment 3

[0056] The old part of the piston rod of the supporting coal mine hydraulic support with a diameter of 260mm,

[0057] 1) Cleaning and cleaning of old parts: Use ultrasonic waves to clean the old parts of the piston rod to remove surface attachments, oil stains and oxide layers, so as to clean the surface of the old parts.

[0058] 2) Judgment of remanufacturable characteristics: Using non-destructive testing methods such as gauges, intelligent magnetic memory metal diagnostic instruments, and stress detectors to conduct non-destructive testing on the old piston rod, it was found that the old piston rod was worn out and scratched. The maximum wear and scratch depth is 0.20mm.

[0059] 3) Rough machining of the old parts of the piston rod. The old part is ground to an outer diameter of 259.6mm and a roughness of Ra0.8.

[0060] 4) Use the induction preheating fusion coating process to coat the surface of the old piston rod with a wear-resistant and anti-corrosion coating.

...

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Abstract

The invention discloses a remanufacturing process for a piston rod of a supporting type coal mine hydraulic support through induction, preheating and cladding. The remanufacturing process comprises the steps of cleaning of old components, judgment and grade classification of remanufacturing characteristics, rough machining of the old components of the piston rod, induction, preheating and cladding of a wear-resistant and corrosion-resistant coating, subsequent fine machining, quality inspection and warehousing. According to the remanufacturing process disclosed by the invention, the induction, preheating and cladding are introduced to the remanufacturing of the old components, so that the defects that a conventional repair process is limited in processing time, poor in roughness and poor in effect are overcome; the problems that a laser cladding remanufacturing process is high in cost, low in efficiency and easy in thermal deformation are solved; the high performance and high quality of a remanufactured piston rod are achieved; the high speed, high efficiency, high yield, automatic control and low production cost during remanufacturing are realized; the service life of the remanufactured piston rod is significantly prolonged; the whole remanufacturing process is pollution-free, green and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of mining machinery, in particular to a support type coal mine hydraulic support piston rod induction preheating fusion coating remanufacturing process. Background technique [0002] Building a conservation-oriented society is an inevitable choice for my country's social development in the new era, and the core of conservation is to conserve resources and energy. Practice has proved that remanufacturing can maximize the development and utilization of the value contained in waste mechanical products. It is the best and preferred way to recycle waste mechanical products and an important means of saving resources. Remanufacturing of waste mechanical products is an important measure to develop circular economy and build a conservation-oriented society. [0003] Remanufacturing engineering is guided by the theory of the whole life cycle of products, with the goal of leapfrog improvement in the performance of was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/02C23C4/14C23C4/06C23C4/129
Inventor 翟长生
Owner 焦作市华科液压机械制造有限公司
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