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Process for surfacing copper alloy on inner surface of 27SiMn stand column of coal mine liquid support

An inner surface and coal mine technology is applied in the field of surfacing copper alloy on the inner surface of a 27SiMn column of a coal mine liquid support, which can solve problems such as affecting physical health, affecting service life, high environmental pollution, etc. The effect of low environmental pollution

Pending Publication Date: 2022-07-29
TIANJIN YINGYUAN WELDING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a process of surfacing copper alloy on the inner surface of the 27SiMn column of the coal mine liquid support, which solves the problem that the traditional process is easy to pollute the environment, affect the health, and is easy to fall off, affecting the service life. question

Method used

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  • Process for surfacing copper alloy on inner surface of 27SiMn stand column of coal mine liquid support
  • Process for surfacing copper alloy on inner surface of 27SiMn stand column of coal mine liquid support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] S1. Evaluation of the inner surface of the oil cylinder: focus on checking whether the oil cylinder has the phenomenon of cylinder expansion, and discard the oil cylinder with the phenomenon of cylinder expansion;

[0022] S2. Machining before welding: first remove the valve seat and other accessories on the outer surface of the cylinder, then check the inner surface of the cylinder, perform local grinding and welding repair for local corrosion, and further weld the process ring at the end of the cylinder, and use the cylinder The mouth is the benchmark machining process ring as the reserved benchmark for post-welding machining, machining the shelf position on the outer surface of the cylinder, further turning the stop, static seal and chamfering of the cylinder body, and finally machining the inner surface of the cylinder with a boring machine;

[0023] S3. Degreasing and decontamination before welding: For cylinders with a diameter larger than 250mm, use a special lase...

Embodiment 2

[0032] S1. Evaluation of the inner surface of the oil cylinder: focus on checking whether the oil cylinder has the phenomenon of cylinder expansion, and discard the oil cylinder with the phenomenon of cylinder expansion;

[0033] S2. Machining before welding: first remove the valve seat and other accessories on the outer surface of the cylinder, then check the inner surface of the cylinder, perform local grinding and welding repair for local corrosion, and further weld the process ring at the end of the cylinder, and use the cylinder The mouth is the benchmark machining process ring as the reserved benchmark for post-welding machining, machining the shelf position on the outer surface of the cylinder, further turning the stop, static seal and chamfering of the cylinder body, and finally machining the inner surface of the cylinder with a boring machine;

[0034] S3. Degreasing and decontamination before welding: For cylinders with a diameter larger than 250mm, use a special lase...

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Abstract

The invention discloses a process for surfacing copper alloy on the inner surface of a 27SiMn stand column of a coal mine liquid support, which comprises the following steps of: S1, evaluating the inner surface of an oil cylinder: emphatically checking whether the oil cylinder has a cylinder expansion phenomenon, and discarding the oil cylinder with the cylinder expansion phenomenon; s2, pre-welding machining: firstly removing accessories such as a valve seat on the outer surface of the cylinder body, then checking the inner surface of the oil cylinder, carrying out local polishing and repair welding treatment on a local corrosion part, further welding a process ring at the tail part of the cylinder body, machining the process ring by taking a cylinder opening as a reference as a reserved reference of post-welding machining, machining a frame position of the outer surface of the cylinder body, and machining the frame position of the outer surface of the cylinder body; the invention relates to the technical field of welding. According to the process for surfacing the copper alloy on the inner surface of the 27SiMn stand column of the coal mine liquid support, inert gas shielded welding is adopted, welding protection is good, welding quality is stable, labor intensity is greatly reduced, production efficiency is improved, and the novel process is low in environmental pollution and small in influence on body health.

Description

technical field [0001] The invention relates to the technical field of welding, in particular to a process for surfacing a copper alloy on the inner surface of a 27SiMn column of a coal mine liquid support. Background technique [0002] During the working process of the sump of the hydraulic support, hard particles such as coal chips are easily accumulated on the mating surface of the column, causing scratches, and the hydraulic oil is easily mixed with corrosive media such as moisture and H2S, which leads to rust on the inner surface of the sump. Affects the sealing effect and eventually causes the lifting force to drop. Currently, the electroplating process is used. The disadvantages are: 1. This process is highly polluted to the environment and causes serious cancer to the body. 2. It is easy to fall off and affects the service life. SUMMARY OF THE INVENTION [0003] In view of the deficiencies of the prior art, the present invention provides a process for surfacing a c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/173B23K9/133B23K9/235B23K9/32
CPCB23K9/173B23K9/133B23K9/235B23K9/32
Inventor 边克勇
Owner TIANJIN YINGYUAN WELDING TECH
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