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Electroplating amorphous ferrum-nickel-tungsten alloy corrosion-resistant wear-resistant oil pump

An anti-corrosion and wear-resistant, amorphous iron technology, used in pumps, mechanical equipment, liquid variable capacity machinery, etc., can solve the problems of hexavalent chromium environmental pollution, general wear resistance, environmental pollution, etc., and achieve environmental protection treatment. Low cost, good bonding force and good wear resistance

Inactive Publication Date: 2010-03-10
胜利油田金岛实业有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the chromium plating method commonly used in China is resistant to acid, alkali and sulfide, not resistant to salt spray, and has good wear resistance, but hexavalent chromium causes serious environmental pollution.
Nickel-phosphorus plating is alkali-resistant, not acid-resistant, wear-resistant in general, and pollutes the environment

Method used

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  • Electroplating amorphous ferrum-nickel-tungsten alloy corrosion-resistant wear-resistant oil pump
  • Electroplating amorphous ferrum-nickel-tungsten alloy corrosion-resistant wear-resistant oil pump

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Embodiment Construction

[0010] Such as figure 1 As shown, the present invention is an electroplated amorphous iron-nickel-tungsten alloy anti-corrosion and wear-resistant oil well pump. The main structure includes a pump barrel 1, a protective layer 2, a plunger 3 and an oil inlet valve 4, wherein the upper end of the plunger is connected to the oil outlet cover. The lower part is equipped with an oil outlet valve.

[0011] Refer to attached figure 2 A layer of amorphous iron-nickel-tungsten anti-corrosion and wear-resistant protective layer 2 is plated on the inner surface of the pump barrel 1, and the thickness of the protective layer is not less than 75 μm.

[0012] The electroplating process flow of the pump barrel 1 of the oil well pump is: electrolytic degreasing-clean water cleaning-etching-deionized water cleaning-electroplating-water washing-heat treatment. Electrolytic degreasing is treated in a degreasing liquid at 70°C for 5-10 minutes, and the current density is 5-10A / dm 2 ; Etching ...

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Abstract

The invention relates to an electroplating amorphous ferrum-nickel-tungsten alloy corrosion-resistant wear-resistant oil pump comprising a pump barrel, a plunger piston, an oil inlet valve and an oiloutlet valve, wherein the internal surface of the pump barrel is plated with an amorphous ferrum-nickel-tungsten corrosion-resistant wear-resistant protective layer, and the thickness of the protective layer is at least 75 mu m. The method for plating the protective layer comprises the following steps: electrolyzing to remove oil, washing with clear water, etching, washing with deionized water, electroplating, washing with weater and heat-treating. The electrolyzing to remove oil is realized by treating in an oil removing solution at 65-75 DEG C for 5-10 minutes, and the current density is 5-10 A / dm<2>. The etching is realized by removing oxidation films in a NaNO3 solution with the current density of 5-10 A / dm<2> until the natural color of the metal is exposed. The electroplating is realized in such as way that: a tungsten alloy plating solution is adopted, sodium hydroxide or ammonia is used for regulating the pH value to 7-8, the temperature for the electroplating is at least 70 DEGC, the current density is 5-10 A / dm<2>, and the electroplating time is 3-4 hours. The heat treatment is realized by keeping the temperature at 500-600 DEG C for 1.5 hours. The oil pump has the advantages of high microhardness, acid resistance, corrosion resistance, favorable wear resistance and long service life.

Description

technical field [0001] The invention relates to the technical field of oil well pumps, in particular to an electroplated amorphous iron-nickel-tungsten alloy anti-corrosion and wear-resistant oil well pump. Background technique [0002] The oil pump is mainly composed of pump barrel, plunger, oil inlet valve and oil outlet valve. The oil pump is driven by the pumping unit during work, and the plunger reciprocates up and down in the pump barrel. During the upstroke, the oil outlet valve at the lower part of the plunger is closed, the plunger pushes the crude oil in the pump barrel out of the pump barrel, and at the same time the lower part forms a vacuum, and the oil is sucked into the pump barrel through the oil inlet valve. During the downstroke, the oil inlet valve is closed, and the oil is pressed to the top through the plunger and the oil outlet valve, so that the continuous up and down movement will continuously suck the oil to the ground. As most domestic oilfields h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B15/04C25D3/56C25D5/36C25D5/50
Inventor 尤滨清丁永杰郑海滨李华孝刘刚丁永强张军赵昆黄俊平
Owner 胜利油田金岛实业有限责任公司
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