CN105154791A - High-hardness high-toughness wear-resisting ball for ball mill - Google Patents
High-hardness high-toughness wear-resisting ball for ball mill Download PDFInfo
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- CN105154791A CN105154791A CN201510552233.7A CN201510552233A CN105154791A CN 105154791 A CN105154791 A CN 105154791A CN 201510552233 A CN201510552233 A CN 201510552233A CN 105154791 A CN105154791 A CN 105154791A
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Abstract
The invention discloses a high-hardness high-toughness wear-resisting ball for a ball mill. The high-hardness high-toughness wear-resisting ball comprises, by weight, 1.8-2.4% of carbon, 0.6-1.2% of silicon, 0.6-1% of manganese, 0.04-0.08% of phosphorus, 0.5-0.9% of sulphur, 0.3-0.9% of chromium, 0.45-0.77% of molybdenum, 0.3-0.5% of copper and the balance iron and inevitable impurities. The high-hardness high-toughness wear-resisting ball is good in wear resistance, high in hardness and good in toughness.
Description
Technical field
The present invention relates to wear-resistant ball technical field, particularly relate to a kind of ball mill high hardness high toughness wear-resistant ball.
Background technology
Ball mill is the main production equipments of the correlative such as pulverizing and ground ore, coal, cement, wear-resistant ball is the key equipment of ball mill, and be main consumable accessory, its principle utilizes the impact of wear-resistant ball and material and grinding to make crushing material, the quality of wear-resistant ball directly affects the pulverizing quality of material to be comminuted, the work-ing life of wear-resistant ball directly affects labour productivity, so be to have enough intensity and hardness to the requirement of wear-resistant ball, has good toughness again.
Summary of the invention
The present invention proposes a kind of ball mill high hardness high toughness wear-resistant ball, wear resisting property is good, and hardness is high and have good toughness.
A kind of ball mill high hardness high toughness wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises:
All the other are iron and inevitable impurity;
In preparation process, by steel scrap, ferrochrome, manganese ingot, molybdenum-iron, gray iron, waste and old enameled wire is put into process furnace as base-material and is heated, and treats that temperature is increased to 800-1000 DEG C, insulation 1.5-3h, add reductor insulation 2-4min, send into die for molding, forge, obtain base material, base material is preheated to 600-800 DEG C and beats 15-30min, be cooled to 700-750 DEG C, quench treatment, in quench treatment, evenly spreads out material and is contained in basket frame, resistance furnace is loaded under room temperature, after being warming up to 560 DEG C with the speed of 30-45 DEG C/h, insulation 0.5-1h, wherein when temperature rises to 350 DEG C, 400 DEG C, 480 DEG C, 20-40min is given respectively when 560 DEG C, 30-60min, 20-60min, the insulation of 30-50min, then with the speed of 50-80 DEG C/h, furnace temperature is risen to quenching temperature 800-900 DEG C to be incubated, insulation 1-3h, come out of the stove and be placed on quick air cooling in iron frame, tempering, tempering temperature is 240-280 DEG C, and tempering time is 2-3h, obtains ball mill high hardness high toughness wear-resistant ball.
Preferably, reductor comprises following component by weight: 1.5-2.5 part ferromanganese, 1-3 part ferrosilicon, 2-4 part aluminium powder.
Preferably, the particle diameter of ferromanganese is 2-5mm, and ferrosilicon particle diameter is 1-4mm.
Preferably, the weight ratio of carbon and chromium is 2-2.2:0.4-0.7.
Preferably, the weight ratio of carbon and silicon is 2-2.2:0.8-1.2.
Preferably, the weight ratio of molybdenum and copper is 0.5-0.7:0.4-0.42.
Preferably, its compositions in weight percentage comprises:
All the other are iron and inevitable impurity.
Preferably, in preparation process, by steel scrap, ferrochrome, manganese ingot, molybdenum-iron, gray iron, waste and old enameled wire is put into process furnace as base-material and is heated, treat that temperature is increased to 1000 DEG C, insulation 1.5h, add reductor insulation 4min, send into die for molding, forge, obtain base material, base material is preheated to 600 DEG C and beats 30min, be cooled to 700 DEG C, quench treatment, in quench treatment, material is evenly spread out and is contained in basket frame, resistance furnace is loaded under room temperature, after being warming up to 560 DEG C with the speed of 45 DEG C/h, insulation 0.5h, wherein when temperature rises to 350 DEG C, 400 DEG C, 480 DEG C, 40min is given respectively when 560 DEG C, 30min, 60min, the insulation of 30min, then with the speed of 80 DEG C/h, furnace temperature is risen to quenching temperature 800 DEG C to be incubated, insulation 3h, come out of the stove and be placed on quick air cooling in iron frame, tempering, tempering temperature is 240 DEG C, tempering time is 3h, obtain ball mill high hardness high toughness wear-resistant ball.
The present invention is by adopting steel scrap, ferrochrome, manganese ingot, molybdenum-iron, gray iron, waste and old enameled wire is as base-material, molten steel deoxidization through above-mentioned technique melting is abundant, alloying element scaling loss is few, molten steel quality is high, chemical composition stability, each component of conservative control wear-resistant ball, wherein carbon content is the important factor affecting wear-resistant ball performance, increase with carbon content, carbide increasing number in tissue, hardness increases, toughness declines, wear-resistant ball fragmentation tendency increases, silicon can reduce the hardening capacity of wear-resistant ball, silicon amount increases, hardness increases, and higher silicon is dissolved in matrix, be conducive to improving erosion resistance, but silicon amount can not be too high, if more than 8%, toughness significantly declines, manganese forms austenitic element, the formation of carbide is also worked, consider the needs of deoxidization desulfuration, Fe content is no more than 6%, add molybdenum and copper is in order to crystal grain thinning, strengthening matrix, improve wear resistance, copper also can reduce erosion rate in addition, strengthen corrosion-resistant, by the content of conservative control said components, the good toughness of wear-resistant ball, hardness and wear resisting property significantly improve, and corrosion resistance and good.
Embodiment
Embodiment 1
A kind of ball mill high hardness high toughness wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises:
All the other are iron and inevitable impurity.
Above-mentioned ball mill high hardness high toughness wear-resistant ball preparation method, comprises the steps:
By steel scrap, ferrochrome, manganese ingot, molybdenum-iron, gray iron, waste and old enameled wire is put into process furnace as base-material and is heated, treat that temperature is increased to 800 DEG C, insulation 3h, add reductor insulation 2min, send into die for molding, forge, obtain base material, base material is preheated to 800 DEG C and beats 15min, be cooled to 750 DEG C, quench treatment, in quench treatment, material is evenly spread out and is contained in basket frame, resistance furnace is loaded under room temperature, after being warming up to 560 DEG C with the speed of 30 DEG C/h, insulation 1h, wherein when temperature rises to 350 DEG C, 400 DEG C, 480 DEG C, 20min is given respectively when 560 DEG C, 60min, 20min, the insulation of 50min, then with the speed of 50 DEG C/h, furnace temperature is risen to quenching temperature 900 DEG C to be incubated, insulation 1h, come out of the stove and be placed on quick air cooling in iron frame, tempering, tempering temperature is 280 DEG C, tempering time is 2h, obtain ball mill high hardness high toughness wear-resistant ball.
Reductor comprises following component by weight: 2.5 parts of ferromanganese, 1 part of ferrosilicon, 4 parts of aluminium powders, and the particle diameter of ferromanganese is 2-5mm, and ferrosilicon particle diameter is 1-4mm.
Embodiment 2
A kind of ball mill high hardness high toughness wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises:
All the other are iron and inevitable impurity.
Above-mentioned ball mill high hardness high toughness wear-resistant ball preparation method, comprises the steps:
By steel scrap, ferrochrome, manganese ingot, molybdenum-iron, gray iron, waste and old enameled wire is put into process furnace as base-material and is heated, treat that temperature is increased to 1000 DEG C, insulation 1.5h, add reductor insulation 4min, send into die for molding, forge, obtain base material, base material is preheated to 600 DEG C and beats 30min, be cooled to 700 DEG C, quench treatment, in quench treatment, material is evenly spread out and is contained in basket frame, resistance furnace is loaded under room temperature, after being warming up to 560 DEG C with the speed of 45 DEG C/h, insulation 0.5h, wherein when temperature rises to 350 DEG C, 400 DEG C, 480 DEG C, 40min is given respectively when 560 DEG C, 30min, 60min, the insulation of 30min, then with the speed of 80 DEG C/h, furnace temperature is risen to quenching temperature 800 DEG C to be incubated, insulation 3h, come out of the stove and be placed on quick air cooling in iron frame, tempering, tempering temperature is 240 DEG C, tempering time is 3h, obtain ball mill high hardness high toughness wear-resistant ball.
Reductor comprises following component by weight: 1.5 parts of ferromanganese, 3 parts of ferrosilicon, 2 parts of aluminium powders, and the particle diameter of ferromanganese is 2-5mm, and ferrosilicon particle diameter is 1-4mm.
Embodiment 3
A kind of ball mill high hardness high toughness wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises:
All the other are iron and inevitable impurity.
Above-mentioned ball mill high hardness high toughness wear-resistant ball preparation method, comprises the steps:
By steel scrap, ferrochrome, manganese ingot, molybdenum-iron, gray iron, waste and old enameled wire is put into process furnace as base-material and is heated, treat that temperature is increased to 950 DEG C, insulation 2h, add reductor insulation 3min, send into die for molding, forge, obtain base material, base material is preheated to 750 DEG C and beats 25min, be cooled to 720 DEG C, quench treatment, in quench treatment, material is evenly spread out and is contained in basket frame, resistance furnace is loaded under room temperature, after being warming up to 560 DEG C with the speed of 42 DEG C/h, insulation 1h, wherein when temperature rises to 350 DEG C, 400 DEG C, 480 DEG C, 32min is given respectively when 560 DEG C, 45min, 55min, the insulation of 45min, then with the speed of 70 DEG C/h, furnace temperature is risen to quenching temperature 840 DEG C to be incubated, insulation 2h, come out of the stove and be placed on quick air cooling in iron frame, tempering, tempering temperature is 250 DEG C, tempering time is 2.5h, obtain ball mill high hardness high toughness wear-resistant ball.
Reductor comprises following component by weight: 2 parts of ferromanganese, 2.4 parts of ferrosilicon, 2.4 parts of aluminium powders, and the particle diameter of ferromanganese is 2-5mm, and ferrosilicon particle diameter is 1-4mm.
Embodiment 4
A kind of ball mill high hardness high toughness wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises:
All the other are iron and inevitable impurity.
Above-mentioned ball mill high hardness high toughness wear-resistant ball preparation method, comprises the steps:
By steel scrap, ferrochrome, manganese ingot, molybdenum-iron, gray iron, waste and old enameled wire is put into process furnace as base-material and is heated, treat that temperature is increased to 1000 DEG C, insulation 1.5h, add reductor insulation 4min, send into die for molding, forge, obtain base material, base material is preheated to 600 DEG C and beats 30min, be cooled to 700 DEG C, quench treatment, in quench treatment, material is evenly spread out and is contained in basket frame, resistance furnace is loaded under room temperature, after being warming up to 560 DEG C with the speed of 45 DEG C/h, insulation 0.5h, wherein when temperature rises to 350 DEG C, 400 DEG C, 480 DEG C, 40min is given respectively when 560 DEG C, 30min, 60min, the insulation of 30min, then with the speed of 80 DEG C/h, furnace temperature is risen to quenching temperature 800 DEG C to be incubated, insulation 3h, come out of the stove and be placed on quick air cooling in iron frame, tempering, tempering temperature is 240 DEG C, tempering time is 3h, obtain ball mill high hardness high toughness wear-resistant ball.
Reductor comprises following component by weight: 1.5 parts of ferromanganese, 3 parts of ferrosilicon, 2 parts of aluminium powders, and the particle diameter of ferromanganese is 2-5mm, and ferrosilicon particle diameter is 1-4mm.
Adopt the finished product wear-resistant ball that above-mentioned explained hereafter goes out, hardness value reaches 54-58HRC, and through using on ball mill, average ball consumption is about 60-80g/T, and percentage of damage is at 0.05-0.07%, and the life-span is about the 5-8 of common forged steel ball doubly, remarkable in economical benefits.
Above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (8)
1. a ball mill high hardness high toughness wear-resistant ball, is characterized in that, its compositions in weight percentage comprises:
All the other are iron and inevitable impurity;
In preparation process, by steel scrap, ferrochrome, manganese ingot, molybdenum-iron, gray iron, waste and old enameled wire is put into process furnace as base-material and is heated, and treats that temperature is increased to 800-1000 DEG C, insulation 1.5-3h, add reductor insulation 2-4min, send into die for molding, forge, obtain base material, base material is preheated to 600-800 DEG C and beats 15-30min, be cooled to 700-750 DEG C, quench treatment, in quench treatment, evenly spreads out material and is contained in basket frame, resistance furnace is loaded under room temperature, after being warming up to 560 DEG C with the speed of 30-45 DEG C/h, insulation 0.5-1h, wherein when temperature rises to 350 DEG C, 400 DEG C, 480 DEG C, 20-40min is given respectively when 560 DEG C, 30-60min, 20-60min, the insulation of 30-50min, then with the speed of 50-80 DEG C/h, furnace temperature is risen to quenching temperature 800-900 DEG C to be incubated, insulation 1-3h, come out of the stove and be placed on quick air cooling in iron frame, tempering, tempering temperature is 240-280 DEG C, and tempering time is 2-3h, obtains ball mill high hardness high toughness wear-resistant ball.
2. ball mill high hardness high toughness wear-resistant ball preparation method according to claim 1, it is characterized in that, reductor comprises following component by weight: 1.5-2.5 part ferromanganese, 1-3 part ferrosilicon, 2-4 part aluminium powder.
3. ball mill high hardness high toughness wear-resistant ball preparation method according to claim 1 and 2, is characterized in that, the particle diameter of ferromanganese is 2-5mm, and ferrosilicon particle diameter is 1-4mm.
4. the high hardness high toughness wear-resistant ball preparation method of the ball mill according to any one of claim 1-3, is characterized in that, the weight ratio of carbon and chromium is 2-2.2:0.4-0.7.
5. the high hardness high toughness wear-resistant ball of the ball mill according to any one of claim 1-4, is characterized in that, the weight ratio of carbon and silicon is 2-2.2:0.8-1.2.
6. the high hardness high toughness wear-resistant ball of the ball mill according to any one of claim 1-5, is characterized in that, the weight ratio of molybdenum and copper is 0.5-0.7:0.4-0.42.
7. the high hardness high toughness wear-resistant ball of the ball mill according to any one of claim 1-6, is characterized in that, its compositions in weight percentage comprises:
All the other are iron and inevitable impurity.
8. the high hardness high toughness wear-resistant ball of the ball mill according to any one of claim 1-7, is characterized in that, in preparation process, by steel scrap, ferrochrome, manganese ingot, molybdenum-iron, gray iron, waste and old enameled wire is put into process furnace as base-material and is heated, and treats that temperature is increased to 1000 DEG C, insulation 1.5h, add reductor insulation 4min, send into die for molding, forge, obtain base material, base material is preheated to 600 DEG C and beats 30min, be cooled to 700 DEG C, quench treatment, in quench treatment, evenly spreads out material and is contained in basket frame, resistance furnace is loaded under room temperature, after being warming up to 560 DEG C with the speed of 45 DEG C/h, insulation 0.5h, wherein when temperature rises to 350 DEG C, 400 DEG C, 480 DEG C, 40min is given respectively when 560 DEG C, 30min, 60min, the insulation of 30min, then rises to quenching temperature 800 DEG C with the speed of 80 DEG C/h by furnace temperature and is incubated, insulation 3h, come out of the stove and be placed on quick air cooling in iron frame, tempering, tempering temperature is 240 DEG C, tempering time is 3h, obtains ball mill high hardness high toughness wear-resistant ball.
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| CN201510552233.7A CN105154791A (en) | 2015-08-28 | 2015-08-28 | High-hardness high-toughness wear-resisting ball for ball mill |
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| CN201510552233.7A CN105154791A (en) | 2015-08-28 | 2015-08-28 | High-hardness high-toughness wear-resisting ball for ball mill |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59129720A (en) * | 1983-01-17 | 1984-07-26 | Kubota Ltd | Production of high hardness high chromium roll |
| CN101857938A (en) * | 2010-07-15 | 2010-10-13 | 宁国市开源电力耐磨材料有限公司 | High-silicon and medium-chromium grinding ball and secondary metamorphic processing technique thereof |
| CN101886205A (en) * | 2010-07-07 | 2010-11-17 | 南京信息工程大学 | Wear-resistant cast iron alloy and preparation method thereof |
-
2015
- 2015-08-28 CN CN201510552233.7A patent/CN105154791A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59129720A (en) * | 1983-01-17 | 1984-07-26 | Kubota Ltd | Production of high hardness high chromium roll |
| CN101886205A (en) * | 2010-07-07 | 2010-11-17 | 南京信息工程大学 | Wear-resistant cast iron alloy and preparation method thereof |
| CN101857938A (en) * | 2010-07-15 | 2010-10-13 | 宁国市开源电力耐磨材料有限公司 | High-silicon and medium-chromium grinding ball and secondary metamorphic processing technique thereof |
Non-Patent Citations (1)
| Title |
|---|
| 日本钢铁协会: "《新版钢铁技术讲座》", 31 December 1982, 上海科学技术出版社 * |
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Application publication date: 20151216 |