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A wear-resistant and anti-corrosion treatment method for a combined valve in the petroleum industry and the combined valve

A treatment method, a technology in the petroleum industry, applied to components of pumping devices for elastic fluids, variable displacement pump components, machines/engines, etc., can solve the problem of low cost and combination valves that cannot be used under high temperature, high pressure, and high corrosion Long-term work in the environment, etc., to achieve the effect of improving wear resistance, high surface wear resistance, and broad market prospects

Active Publication Date: 2017-12-15
SHAANXI TIANYUAN MATERIALS PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and innovatively propose a surface corrosion-resistant and wear-resistant treatment technology based on laser cladding technology for combined valves in the petroleum industry, which solves the problem that combined valves cannot withstand high temperature, high pressure, For the problem of long-term work in a highly corrosive environment, the surface hardness of the combined valve processed by the technology of the present invention is ≥58HRC, the thickness of the laser cladding layer is ≥0.5mm, the yield is ≥95%, and the wear resistance and corrosion resistance are higher. The processing efficiency is high and the cost is low. The technology can be used to repair the severely damaged combined valve body after the expiration of the service period, and can also be used to improve the performance of new products. The market prospect is broad

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  • A wear-resistant and anti-corrosion treatment method for a combined valve in the petroleum industry and the combined valve
  • A wear-resistant and anti-corrosion treatment method for a combined valve in the petroleum industry and the combined valve

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Embodiment 1

[0045] The preferred surface strengthening treatment method suitable for combined valves described in the present invention specifically includes the following steps:

[0046] (1) Use wire brushes, polishing sheets, grinding heads and other tools to remove impurities such as rust and oil residue on the surface of the combination valve to be surface modified to ensure that the rust spots are completely removed. If there are corrosion pits, the corrosion pits should be completely cleaned, and the surface is metallic luster. ;

[0047] (2) Use argon arc welding to repair the surface of the combination valve treated in step (1). During the repair process, ensure that there is enough machining allowance to ensure that the combination valve can be completely processed. The welding wire is 2.0mm in diameter, and each The mass fractions of elements are as follows: Carbon≤0.03%, Si≤0.6%, Mn, 0.25%-1.00%, Cr: 23%-25%, Ni: 12%-14%, Fe balance, welding process parameters are The current ...

Embodiment 2

[0055] The preferred surface strengthening treatment method suitable for combined valves described in the present invention specifically includes the following steps:

[0056] (1) Use wire brushes, polishing sheets, grinding heads and other tools to remove rust, oil residue and other impurities on the surface of the combination valve to be surface modified to ensure that the rust spots are completely removed. If there are corrosion pits, the corrosion pits should be completely cleaned, and the surface is metallic luster. ;

[0057] (2) Repair the upper and lower ends of the combination valve processed in step (1) with argon arc welding. During the repair process, ensure that there is enough machining allowance to ensure that the combined valve can be completely machined. The welding wire adopts a welding wire with a diameter of 2.0mm, and the mass fraction of each element is as follows: Carbon≤0.03%, Si≤0.6%, Mn, 0.25%-1.00%, Cr: 23%-25%, Ni: 12%- 14%, Fe margin, welding pro...

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Abstract

The invention provides an abrasion-resistant and anticorrosion processing method for a combination valve of the petroleum industry and the combination valve. The method comprises the following steps that firstly, the surfaces of the combination valve are cleaned; secondly, argon arc welding is adopted for mending to ensure that enough working allowance is reserved on the surfaces of the combination valve; thirdly, machining is conducted, working allowance is reserved on the upper end face and the lower end face of the combination valve, and the other surfaces are machined according to the standard size of a new part and the tolerance; fourthly, the combination valve is installed, the cladded face is cleaned, and a laser cladding device is debugged at the same time; fifthly, cladding powder is added to the laser cladding device, after the cladding powder is evenly and steadily sent out through a powder feeding inlet, a laser operation procedure is started to conduct laser cladding treatment on the upper end face and the lower end face of the combination valve; and sixthly, the final size inspection of the combination valve is conducted. According to the abrasion-resistant and anticorrosion processing method for the combination valve of the petroleum industry and the combination valve, an innovative technique of the argon arc welding, the laser cladding and the machining is adopted, and the surface hardness of the treated combination valve is up to 58HRC, so that the abrasion-resistant and anticorrosion properties are higher, and the market prospect is broad.

Description

technical field [0001] The present invention relates to an anti-corrosion and wear-resistant treatment technology, more specifically to a wear-resistant and anti-corrosion treatment method for a combination valve in the petroleum industry and the combination valve, in particular to a wear-resistant and anti-corrosion treatment method for a combination valve with laser surface modification . Background technique [0002] Since most of the oil is stored in porous rocks, it needs to be mined under high pressure and high temperature environment. Generally, the water injection well intersects obliquely with the center of the oil production well on the side of the oil production well. By injecting liquid, the pressure in the oil-rich area is increased to make it easier to be produced. The water injection well injects high-pressure liquid into the well through a reciprocating plunger pump, thereby increasing the pressure in the oil-rich area. During the injection process, the plu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00F04B53/10
CPCB23P15/001F04B53/10
Inventor 王春昌邵犬马尚刘鸣张亚飞
Owner SHAANXI TIANYUAN MATERIALS PROTECTION TECH