Preparation method of anti-corrosion impeller for chemical pump

A corrosion-resistant, chemical pump technology, applied in the field of pump parts manufacturing, can solve problems such as working efficiency not meeting pump equipment performance requirements, large flow surface roughness, excessive wall thickness, etc., to reduce segregation phenomenon, durability Strong corrosion resistance and prolonging the service life

Inactive Publication Date: 2017-05-10
ANHUI TENGLONG PUMP VALVE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As the core part of the pump product, the impeller plays an important role in the performance of the pump and the reliability and life of the whole machine. From the development of pump products in my country to the present, the casting process of the impeller adopts sand casting. With the development of technology With the development, water glass casting technology and investment casting technology have gradually appeared. The impeller cast by molding sand has relatively large defects, such as heavy wall thickness, large roughness of the flow-through surface, and low precision, resulting in the working efficiency of the pump. It does not meet the performance requirements of the pump equipment, so the impeller needs to be treated to improve its performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method for preparing a corrosion-resistant impeller for a chemical pump, wherein the surface of the impeller is coated with a ceramic polymer material layer, specifically comprising the following steps:

[0016] (1) Composition of raw materials for the ceramic polymer material layer: in parts by weight, calcined calcined powder 15, beidellite 8, cordierite 4, ceramic particles 30, nitrile rubber 5, borax 12, titanium carbide 3, cobalt tetroxide 1, Thorium oxide 2, titanium nitride 3, cashew nut shell liquid 2;

[0017] (2) Preparation of ceramic polymer liquid: Heat and melt ceramic particles, nitrile rubber, borax, titanium carbide, cobalt tetroxide, thorium oxide, and titanium nitride. After keeping for 5-8 minutes, add the remaining raw materials into the ball mill, press Mixed raw materials: ball stone: water weight ratio is 1:4:0.8 Mix ball mill for 12-15 hours to get the mixed material, ultrasonically oscillate for 35-40 minutes at 55-60°C, cool down to get the ...

Embodiment 2

[0024] A method for preparing a corrosion-resistant impeller for a chemical pump, wherein the surface of the impeller is coated with a ceramic polymer material layer, specifically comprising the following steps:

[0025] (1) Composition of raw materials for the ceramic polymer material layer: in parts by weight, calcined calcined powder 20, beidellite 8, cordierite 7, ceramic particles 25, nitrile rubber 7, borax 8, titanium carbide 5, cobalt tetroxide 2, Thorium oxide 3, titanium nitride 4, cashew nut shell liquid 2;

[0026] Other steps are the same as in Example 1.

[0027] The performance test of the impeller prepared in the present invention shows that its strength reaches 435MPa and its hardness reaches 133HB. After soaking in a 10% sodium hydroxide solution by mass percentage, no foaming or shedding occurs for 5 days.

Embodiment 3

[0029] A method for preparing a corrosion-resistant impeller for a chemical pump, wherein the surface of the impeller is coated with a ceramic polymer material layer, specifically comprising the following steps:

[0030] (2) Composition of raw materials for the ceramic polymer material layer: in parts by weight, calcined calcined powder 18, beidellite 10, cordierite 6, ceramic particles 28, nitrile rubber 6, borax 10, titanium carbide 4, tricobalt tetroxide 2, Thorium oxide 2, titanium nitride 2, cashew nut shell liquid 1;

[0031] Other steps are the same as in Example 1.

[0032] The performance test of the impeller prepared in the present invention shows that its strength reaches 462MPa, its hardness reaches 135HB, and it is immersed in a 10% sodium hydroxide solution by mass percentage, and no foaming or falling off occurs for 5 days.

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Abstract

The invention belongs to the technical field of manufacturing of pump accessories, and particularly relates to a preparation method of an anti-corrosion impeller for a chemical pump. The preparation method comprises processes of preparation of a ceramic macromolecular material layer, impeller surface treatment, coating adhesion and the like. Compared with the prior art, the preparation method has the following advantages: tissues in ceramic macromolecular liquid is uniformly distributed, so that the segregation phenomena are reduced, the surface can be smooth, and the impeller surface can meet the design requirements; the working efficiency of the impeller is improved; the impeller surface is high in corrosion resistance, high in hardness, and relatively high in wear resistance and corrosion resistance, so that the service life of the impeller can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of pump accessories manufacturing, and in particular relates to a method for preparing a corrosion-resistant impeller for a chemical pump. Background technique [0002] As the core part of the pump product, the impeller plays an important role in the performance of the pump and the reliability and life of the whole machine. From the development of pump products in my country to the present, the casting process of the impeller adopts sand casting. With the development of technology With the development, water glass casting technology and investment casting technology have gradually appeared. The impeller cast by molding sand has relatively large defects, such as heavy wall thickness, large roughness of the flow-through surface, and low precision, resulting in the working efficiency of the pump. It does not meet the performance requirements of the pump equipment, so the impeller needs to be treated to improve it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/08C09D7/12C23C26/00C04B35/00C04B35/622
CPCC09D1/00C04B35/00C04B35/622C09D5/08C09D7/61C09D7/63C09D7/65C23C26/00
Inventor 徐向远
Owner ANHUI TENGLONG PUMP VALVE MFG CO LTD
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