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Method for enhancing wear resistant and corrosion resistant performance of over current component of water pump

A wear-resistant technology for flow-passing parts, applied to pump components, parts of pumping devices for elastic fluids, pumps, etc., can solve problems such as expensive materials, complicated processes, and difficult implementation by users, and improve surface quality Effect

Inactive Publication Date: 2009-04-29
山东颜山泵业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The use of the above-mentioned technology has the following defects: First, the surface welding, spraying or wear-resistant cast iron casting, the cutting process of the material is difficult
The second is to only make a fuss about the wear resistance of metal materials, while ignoring the corrosion resistance of the materials used
Third, the above-mentioned materials are expensive and the process is complicated, which is difficult for most users to implement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Blank casting: After core making, molding, smelting, pouring, cleaning and other processes, the blank of the water pump flow parts is cast to make the chemical composition reach: C: 2.9-3.5%, Si: 2.3-2.7%, Mn: 0.5-1.0 %, S: ≤0.1, P: ≤0.14.

[0021] 2. Blank surface treatment: Sand blast the cleaned water pump flow parts blank to obtain a new surface suitable for enamel.

[0022] 3. Preparation of glaze slurry: the mass percentage of frit composition is silicon oxide 40, aluminum oxide 4, boron oxide 8, potassium oxide 4, sodium oxide 10, lithium oxide 4, calcium fluoride 5, sodium fluorosilicate 5, titanium oxide 7. Calcium oxide 4, other 0.5, add 5% clay, 2% quartz powder, 0.5% borax, 0.2% sodium nitrite, 2% melanin and 50% water of frit quality, put into ball mill together, and grind so that The glaze slurry is in a colloidal state, which is the glaze slurry. The fineness of the glaze slurry: 1.0g / 150 mesh.100ml, and the specific gravity of the glaze slurry: 160 / 1...

Embodiment 2

[0027] 1. Blank casting: After core making, molding, smelting, pouring, cleaning and other processes, the blank of the water pump flow parts is cast to make the chemical composition reach: C: 2.9-3.5%, Si: 2.3-2.7%, Mn: 0.5-1.0 %, S: ≤0.1, P: ≤0.14.

[0028] 2. Blank surface treatment: Sand blast the cleaned water pump flow parts blank to obtain a new surface suitable for enamel.

[0029] 3. Preparation of glaze slurry: the mass percentage of frit composition is silicon oxide 50, aluminum oxide 0.2, boron oxide 2, potassium oxide 3, sodium oxide 6, lithium oxide 2, calcium fluoride 3, sodium fluorosilicate 2, titanium oxide 3. Calcium oxide 1, other 1, add 6% clay, 3% quartz powder, 0.7% borax, 0.2% sodium nitrite, 3% melanin and 52% water of frit mass, put them into a ball mill together, and grind to obtain The glaze slurry is in a colloidal state, which is the glaze slurry. The fineness of the glaze slurry: 1.0g / 150 mesh.100ml, and the specific gravity of the glaze slurry: ...

Embodiment 3

[0034] 1. Blank casting: After core making, molding, smelting, pouring, cleaning and other processes, the blank of the water pump flow parts is cast to make the chemical composition reach: C: 2.9-3.5%, Si: 2.3-2.7%, Mn: 0.5-1.0 %, S: ≤0.1, P: ≤0.14.

[0035] 2. Blank surface treatment: Sand blast the cleaned water pump flow parts blank to obtain a new surface suitable for enamel.

[0036] 3. Preparation of glaze slurry: the mass percentage of frit composition is silicon oxide 60, aluminum oxide 3, boron oxide 5, potassium oxide 5, sodium oxide 15, lithium oxide 5, calcium fluoride 7, sodium fluorosilicate 4, titanium oxide 10. Calcium oxide 6, other 0.5, add 4% clay, 5% quartz powder, 0.3% borax, 0.3% sodium nitrite, 5% melanin and 55% water of frit quality, put into ball mill together, grind so that The received glaze slurry is in a colloidal state, that is, the glaze slurry, the fineness of the glaze slurry: 1.0g / 150 mesh.100ml, the specific gravity of the glaze slurry: 160...

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Abstract

The invention provides an abrasion resistant and corrosion resisting method for water pump over-current components. The method comprises the following steps: (1) blank casting, (2) blank surface treatment, (3) glaze slip preparation, (4) enameling, and (5) firing after drying. In the step (3), the mass ratio of the main components of the frit for preparing the glaze slip is that: 40-60 of monox , 0.1-5 of alumina, 1- 10 of boron oxide, 0.1- 5 of potassium oxide, 6-17 of sodium oxide, 0.5-5 of lithium oxide, 1.5-7 of calcium fluoride, 2-6 of sodium fluosilicate, 1-10 of titanium oxide, and 0-2 of others. Relative to the mass of the frit, 5-6% of clay, 0-5% of quartz powder, 0.5-0.8% of boron sand, 0.2-0.3% of sodium nitrate, 2-5% of melanin, and 50-55% of water are added into the frit, and are put into a ball mill to grind to obtain the glaze slip in colloid state. The thickness of the enamel layer attached on the water pump over-current component after firing is between 300 and 700 mu m. The enamel layer is attached on the surface of the water pump over-current component, and has the characteristics of corrosion resistance, abrasion resistance, high pressure resistance, high temperature resistance, and smooth surface with no adhered materials.

Description

technical field [0001] The invention provides a method for improving the wear and corrosion resistance of water pump flow parts, and belongs to the technical field of water pump manufacturing. Background technique [0002] Submersible slurry pumps, submersible sewage pumps, explosion-proof submersible pumps, and submersible mine drainage pumps have long-term submersion into solid particles or corrosive liquid media, and their flow-through parts (pump body and impeller) will not work. The environment is relatively harsh. For example, the medium containing 30% particles such as sand, stone and slag pumped by the submersible slurry pump mainly causes erosion and wear on the flow-passing parts, and the medium containing acidic or alkaline ions pumped by the submersible sewage pump mainly damages the flow-passing parts. Corrosion and wear will occur, and in severe cases, grinding pits or even holes will appear, resulting in the reduction of lift and efficiency of submersible slur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/40F04D29/18C03C8/06
Inventor 张海平张广栋谷成文吴哲军侯萍
Owner 山东颜山泵业有限公司
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