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Corrosion--resisting sea water pump

A sea water pump, corrosion-resistant technology, used in pumps, pump components, non-variable-capacity pumps, etc., can solve the problems of poor corrosion resistance of cast iron, scrapped pumps, and easy damage to pumps.

Inactive Publication Date: 2015-08-19
陈思
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cast iron has poor corrosion resistance and is easy to corrode, so the water pump is prone to damage during use, causing the water pump to be scrapped

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A corrosion-resistant seawater pump, which includes a pump body and an impeller installed inside the pump body, the impeller includes an iron-based alloy impeller body and a chromium oxide ceramic material layer outside the impeller body; the pump body includes: an aluminum alloy pump The silicon oxide-based ceramic material layer on the outer surface of the body and the pump body and the titanium carbide-based ceramic material layer on the inner surface of the pump body,

[0047] It is characterized in that the chemical composition of the iron-based alloy impeller body is (weight percent): C: 0.2%, Cr: 11%, Si: 1%, W: 0.6%, Ni: 0.4%, Mn: 0.2%, Cu: 0.2 ﹪, Ca: 0.2﹪, V: 0.1﹪, Al: 0.08﹪, Sn: 0.04﹪, Y: 0.02﹪, Mg: 0.02﹪, Co: 0.01﹪, Ce: 0.01﹪, the balance is Fe and unavoidable impurities;

[0048] The preparation method of the iron-based alloy impeller body: includes the following steps: prepare the alloy according to the above ratio, smelt the raw materials, pour, and demol...

Embodiment 2

[0061]A corrosion-resistant seawater pump, which includes a pump body and an impeller installed inside the pump body, the impeller includes an iron-based alloy impeller body and a chromium oxide ceramic material layer outside the impeller body; the pump body includes: an aluminum alloy pump The silicon oxide-based ceramic material layer on the outer surface of the body and the pump body and the titanium carbide-based ceramic material layer on the inner surface of the pump body,

[0062] It is characterized in that the chemical composition of the iron-based alloy impeller body is (weight percent): C: 0.3%, Cr: 12%, Si: 2%, W: 0.7%, Ni: 0.5%, Mn: 0.3%, Cu: 0.3 ﹪, Ca: 0.3%, V: 0.2%, Al: 0.09%, Sn: 0.05%, Y: 0.03%, Mg: 0.03%, Co: 0.02%, Ce: 0.02%, the balance is Fe and unavoidable impurities;

[0063] The preparation method of the iron-based alloy impeller body: includes the following steps: prepare the alloy according to the above ratio, smelt the raw materials, pour, and demold...

Embodiment 3

[0076] A corrosion-resistant seawater pump, which includes a pump body and an impeller installed inside the pump body, the impeller includes an iron-based alloy impeller body and a chromium oxide ceramic material layer outside the impeller body; the pump body includes: an aluminum alloy pump The silicon oxide-based ceramic material layer on the outer surface of the body and the pump body and the titanium carbide-based ceramic material layer on the inner surface of the pump body,

[0077] It is characterized in that the chemical composition of the iron-based alloy impeller body is (weight percent): C: 0.25%, Cr: 11.5%, Si: 1.5%, W: 0.65%, Ni: 0.45%, Mn: 0.25%, Cu: 0.25 ﹪, Ca: 0.25﹪, V: 0.15﹪, Al: 0.085﹪, Sn: 0.045﹪, Y: 0.025﹪, Mg: 0.025﹪, Co: 0.015﹪, Ce: 0.015﹪, the balance is Fe and unavoidable impurities;

[0078] The preparation method of the iron-based alloy impeller body: includes the following steps: prepare the alloy according to the above ratio, smelt the raw materials...

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Abstract

A corrosion-resisting sea water pump comprises a pump body and an impeller installed inside the pump body, wherein the impeller comprises an iron-base alloy impeller body and an chromic oxide ceramic material layer outside the impeller body. The pump body comprises an aluminum alloy pump body, a silicon oxide ceramic material layer on the outer surface of the pump body and a titanium carbide ceramic material layer on the inner surface of the pump body. The corrosion-resisting sea water pump has the advantages that iron alloy and the aluminum alloy contain simple components and can meet the strength requirement of an oil pump; the iron alloy and the aluminum alloy containing the simple components are subjected to surface treatment processes of acid pickling and passivation, so that any surface black points and other problems are avoided, and a clean and tidy surface can be obtained.

Description

technical field [0001] The invention relates to a corrosion-resistant seawater pump, which belongs to the technical field of water pumps. Background technique [0002] At present, the circulating water pump is composed of a pump body and an impeller. Since the working medium of the water pump is reclaimed water, sea water, etc., the working conditions are relatively harsh, and it is prone to wear and corrosion, so there are certain requirements for the material properties. Generally, the impeller can be made of stainless steel, and the pump body is mainly made of cast iron, which can be mass-produced, has a simple process, and is cheap and easy to obtain due to its large volume. However, cast iron has poor corrosion resistance and is easy to corrode, so the water pump is prone to damage during use, causing the water pump to be scrapped. Contents of the invention [0003] The purpose of the present invention is to solve the above problems and provide a corrosion-resistant...

Claims

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Application Information

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IPC IPC(8): F04D29/02C22C38/52C22C21/08C23C22/34C23C24/08C23C28/04C23G1/08C23G1/12
CPCF04D29/026C22C21/08C22C38/52C23C22/34C23C24/08C23C28/042C23G1/086C23G1/125F04D29/18F04D29/406
Inventor 陈思
Owner 陈思
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