A high chromium alloy wear-resistant ball

A high-chromium alloy, wear-resistant ball technology, used in the field of friction materials, can solve the problems of poor corrosion resistance, heat resistance, impact resistance, hardness, wear resistance and toughness of wear-resistant balls, and achieve passivation. Good performance, improve corrosion resistance, eliminate cracks

Active Publication Date: 2016-06-01
宁国市宁武新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing wear-resistant balls are not good in corrosion resistance, heat resistance, impact resistance, hardness, wear resistance and toughness, and cannot meet the requirements of the current society.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The high chromium alloy wear-resistant ball of the present invention, its raw material comprises by weight parts: 70 parts of scrap steel, 12.5 parts of ferrochrome, 1 part of ferromolybdenum, 1.1 part of ferrovanadium, 0.3 part of ferromanganese, 0.4 part of ferrosilicon, metal zinc 5 copies;

[0026] According to the above raw material ratio, the high chromium alloy wear-resistant ball is prepared according to the following process:

[0027] S1. Add steel scrap to an intermediate frequency induction melting furnace and heat to 1490°C. After holding for 50 minutes, add ferrochromium, ferromolybdenum, and ferrovanadium. After complete melting, add ferrosilicon, ferromanganese and metal zinc, and heat up to 1576°C. After the molten steel is completely melted, the molten steel is poured, and the mold is opened after the molten steel is completely solidified, and the furnace is cooled to room temperature to obtain a wear-resistant ball green body;

[0028] S2. Put the wea...

Embodiment 2

[0033] The high chromium alloy wear-resistant ball of the present invention, its raw material comprises by weight parts: 100 parts of scrap steel, 14 parts of ferrochrome, 1.5 parts of ferromolybdenum, 1 part of ferrovanadium, 0.15 part of ferromanganese, 0.2 part of ferrosilicon, metal zinc 5 copies;

[0034] According to the above raw material ratio, the high chromium alloy wear-resistant ball is prepared according to the following process:

[0035] S1. Add steel scrap to the medium frequency induction melting furnace and heat to 1500°C. After holding for 35 minutes, add ferrochromium, ferromolybdenum, and ferrovanadium. After complete melting, add ferrosilicon, ferromanganese and metal zinc, and heat up to 1550°C. After the molten steel is completely melted, the molten steel is poured, and the mold is opened after the molten steel is completely solidified, and the furnace is cooled to room temperature to obtain a wear-resistant ball green body;

[0036] S2. Put the wear-re...

Embodiment 3

[0041] The high chromium alloy wear-resistant ball of the present invention, its raw material comprises by weight parts: 75 parts of scrap steel, 13.8 parts of ferrochromium, 1.2 parts of ferromolybdenum, 1.3 parts of ferrovanadium, 0.1 part of ferromanganese, 0.6 part of ferrosilicon, metal zinc 3.6 copies;

[0042] According to the above raw material ratio, the high chromium alloy wear-resistant ball is prepared according to the following process:

[0043] S1. Put the steel scrap into the medium frequency induction melting furnace and heat it to 1510°C. After holding the heat for 25 minutes, add ferrochromium, ferromolybdenum, and ferrovanadium. After it is completely melted, add ferrosilicon, ferromanganese and metal zinc, and heat up to 1600°C. After the molten steel is completely melted, the molten steel is poured, and the mold is opened after the molten steel is completely solidified, and the furnace is cooled to room temperature to obtain a wear-resistant ball green bod...

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PUM

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Abstract

The invention discloses a high-chromium alloy wear-proof ball. Raw materials of the high-chromium alloy wear-proof ball comprise, by weight, 70-100 parts of steel scrap, 5-10 parts of ferrochromium, 1-1.5 parts of ferromolybdenum, 1-1.3 parts of ferrovanadium, 0.1-0.3 parts of ferrovanadium, 0.2-0.6 parts of ferrosilicon and 2-5 parts of zinc. The surface of the high-chromium alloy wear-proof ball high-chromium alloy wear-proof ball is processed through the high-frequency induction fusion covering technology and the electric spark deposition technology. The high-frequency induction fusion covering technology comprises the following steps that the vacuum degree is adjusted to be 50-80 Pa, high-frequency induction fusion covering equipment is turned on, the current rises from 500-550 A to 1650-1720 A within 50-80 seconds, heat preservation is carried out for 50-120 s, the current drops to 500-550 A within 30-40 seconds, the high-frequency induction fusion covering equipment is turned off, and cooling is carried out. The electric spark deposition technical parameters comprise the hydrogen flow of 3-7 m<3> / h, the deposition voltage of 150-200V, the deposition frequency of 1450-1560 Hz, the deposition power of 2000-2500 W, the deposition time of 5-6 min / cm<2> and the revolving speed of a rotary deposition gun of 1800-2200 r / min. The high-chromium alloy wear-proof ball is excellent in impact strength, rigidity, heat resistance and wear resistance.

Description

technical field [0001] The invention relates to the technical field of friction materials, in particular to a high-chromium alloy wear-resistant ball. Background technique [0002] Frictional behavior is ubiquitous, causing huge national economic losses. The survey found that abrasive wear alone causes industrial countries to lose 1%-4% of their gross national product every year. With the rapid economic development and social progress, the social loss caused by wear will be even greater. [0003] Wear-resistant balls are abrasive media in ball mills, and there are many types. High chromium white cast iron grinding balls are also called high chromium alloy casting balls, high chromium steel balls, or high chromium balls for short. As a kind of wear-resistant balls, they are widely used in cement building materials, metal mines, coal slurry thermal power plants Powder preparation and ultra-fine deep processing in industries such as chemical engineering, ceramic coatings, lig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/10C23F17/00C23C24/10C23C26/02C21D9/36C23C28/02C22C19/05
Inventor 丁仕武丁幸徐帮明
Owner 宁国市宁武新材料科技有限公司
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