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Wear-resistant powder metallurgy magnet ring for magnetic water pump of new energy vehicle and manufacturing method of wear-resistant powder metallurgy magnet ring

A new energy vehicle, powder metallurgy technology, used in the manufacture of inductors/transformers/magnets, magnetic materials, magnetic objects, etc., can solve the problems of small hardness, wear resistance, poor acid and alkali resistance, and corrosion resistance, and reduce segregation. , grain refinement, wear resistance and excellent insulation effect

Inactive Publication Date: 2017-03-15
ANHUI RONGJIU OPTICAL FIBER COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the literature, manganese-zinc ferrite is only improved at the microscopic level. Although its frequency characteristics have been improved, it has low magnetic properties, poor corrosion resistance, poor acid and alkali resistance, and low hardness when used to prepare magnetic rings. Grinding and other defects, so it is urgent to recombine and modify the formula and process flow of the magnetic ring in the prior art, and add some alloy elements and lubricating additives to improve its corrosion resistance, acid and alkali resistance, etc., and improve the use of the magnetic ring life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A powder metallurgy magnetic ring for wear-resistant new energy automobile magnetic water pump, made of the following raw materials in parts by weight: chromium 19, carbon 0.027, manganese 3, phosphorus 0.3, copper 11, nano-graphite powder 1.5, antimony trioxide 0.7, Aluminum oxide 0.4, calcium carbonate 1, carbon fiber 2, aminosilane 2.5, castor oil 4, water glass 7, manganese zinc ferrite 1.4, iron 53, the molar formula ratio of the manganese zinc ferrite is iron oxide: oxide Manganese: Zinc Oxide = 51.5:24.5:24.

[0016] A method for manufacturing a powder metallurgy magnetic ring for a wear-resistant new energy automobile magnetic water pump includes the following steps:

[0017] (1) After ultrasonically dispersing the nano-graphite powder and castor oil evenly, add carbon fiber and aminosilane and heat to 50-70°C, fully grind for 5-8 hours, and spray dry;

[0018] (2) Put the copper powder into the crucible resistance furnace and heat it up rapidly until it is com...

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Abstract

The invention discloses a wear-resistant powder metallurgy magnet ring for a magnetic water pump of a new energy vehicle. The wear-resistant powder metallurgy magnet ring is prepared from the following raw materials in parts by weight: 19-20 parts of chromium, 0.027-0.033 part of carbon, 3-5 parts of manganese, 0.3-0.5 part of phosphorus, 11-13 parts of copper, 1.5-1.7 parts of nano graphite powder, 0.7-0.9 part of antimonous oxide, 0.4-0.6 part of aluminum oxide, 1-2 parts of calcium carbonate, 2-3 parts of carbon fiber, 2.5-2.7 parts of amino silane, 4-6 parts of castor oil, 7-9 parts of water glass, 1.4-1.6 parts of manganese zinc ferrite and 53-56 parts of iron. A copper film covers the surface of the modified nano graphite powder as a solid lubricant, and modified manganese zinc ferrite is also added and compounded with the ingredients of manganese, phosphorus and the like; the material microstructure is improved by adopting sintering and high-temperature annealing technologies; and the wear-resistant powder metallurgy magnet ring has the characteristics of relatively high saturation magnetic flux density, acid and alkali resistance, wear resistance, a good insulating effect, high mechanical strength and simplicity in process.

Description

technical field [0001] The invention relates to the technical field of magnetic materials, in particular to a powder metallurgy magnetic ring for a wear-resistant new energy vehicle magnetic water pump and a manufacturing method thereof. Background technique [0002] Soft magnetic materials are a kind of common functional materials, which are widely used in motors, generators, transformers, sensors and other electrical equipment, and are very important components of advanced equipment in modern civilization. Its characteristic is that it can respond quickly and reach a saturated magnetization state under a small magnetic field, and the magnetization state almost disappears after the external magnetic field is removed, and it is easy to control the magnetization state of the material by slightly changing the external field. With the continuous development of the automobile industry, the penetration rate of environmentally friendly, energy-saving and emission-reducing, green n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/33H01F1/34H01F41/02B22F1/02B22F3/10B22F3/24
CPCH01F1/33H01F1/344H01F41/0266B22F3/10B22F3/24B22F2003/248B22F1/10B22F1/17
Inventor 谷道荣
Owner ANHUI RONGJIU OPTICAL FIBER COMM
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