CN104120353A - Wear-resistant steel ball used for ball mill - Google Patents
Wear-resistant steel ball used for ball mill Download PDFInfo
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- CN104120353A CN104120353A CN201410332406.XA CN201410332406A CN104120353A CN 104120353 A CN104120353 A CN 104120353A CN 201410332406 A CN201410332406 A CN 201410332406A CN 104120353 A CN104120353 A CN 104120353A
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Abstract
A wear-resistant steel ball used for a ball mill is disclosed. The steel ball comprises following components by weight: 0.8-0.84% of C, 0.8-0.84% of Si, 1.4-1.44% of Mn, 2.8-3.0% of Cr, 0.03-0.04% of V, 0.3-0.35% of Mo, 0.8-0.85% of Ba, not more than 0.01% of S, and not more than 0.01% of P, with the balance being Fe. The steel ball has characteristics of high strength, high hardness, high toughness, long service lifetime, and good wear resistance, and is suitable for medium- and small- diameter ball mills. The Rockwell hardness of the steel ball is 62-64 HRC. The impact toughness of the steel ball is 7.4-7.6 J/cm<2>. The falling ball impact fatigue lifetime is not less than 12500 times.
Description
Technical field
The present invention relates to a kind of ball mill abrasion-proof steel ball.
Background technology
Ball mill is after material is broken, then the key equipment of pulverizing.It is widely used in cement, silicate product, and the production industries such as New Building Materials, refractory materials, chemical fertilizer, glass-ceramic, carry out dry type or wet type grinding to various ores and other grindability index material.Ball mill is applicable to the various ores of grinding and other material, is widely used in ore dressing, the industries such as building materials and chemical industry.Ball mill is made up of feed portion, discharging portion, rotating part, step-down gear, small transmission gear, motor, the major portion such as automatically controlled.Quill shaft adopts steel casting, liner replaceable, and revolution master wheel adopts foundry goods gear hobbing processing, studs with abrasion-proof backing block in cylindrical shell, has good wear resistance.
Abrasion-proof steel ball is a kind of crushing medium for ball mill, for the material of ball mill pulverizer.Abrasion-proof steel ball has four kinds: a kind of is that white cast iron taking chromium as main alloy element is called for short chrome alloy cast iron, and the cast grinding ball taking chrome alloy cast iron as material is called chromium alloy iron casting abrading ball; The second is that the cast grinding ball taking spheroidal graphite cast iron as material is called ductile iron grinding ball, and the matrix wherein obtaining by thermal treatment is mainly that the ductile iron grinding ball of bainite is called for short bainite ductile iron abrading-ball; The matrix obtaining by thermal treatment is mainly that martensitic ductile iron grinding ball is called for short martensite nodular cast iron grinding ball.The third is the steel ball forming with the round steel hot rolling that steel mill produces, full process automatization control, and ball hardness is even, and centre hardness is high, and percentage of damage is low, and steel ball impact value is large.The 4th kind is to forge and form with the blanking of train wheel, and this steel ball cost is low, but steel ball centre hardness is low, and easily broken, wear resisting property is poor.
In Chinese Patent Application No.: disclose a kind of high-chromium alloy abrasion-proof steel ball in 201310439833, according to chemical composition mass percent is: C2.4～2.8%, Si0.4～0.7%, Mn0.3～0.6%, Cr10.0～10.5%, S≤0.008%, P≤0.008%, all the other are Fe.At present, the price of chromium is in sustainable growth, and this technical scheme cost performance is lower, and this technical scheme haves much room for improvement.
Summary of the invention
For the problems referred to above, the invention provides a kind of ball mill abrasion-proof steel ball, there is good hardness, intensity, toughness, long service life, cost is low.
In order to address the above problem, technical scheme provided by the invention is:
A kind of ball mill abrasion-proof steel ball, each composition and weight percent are: C:0.8-0.84%, Si:0.8-0.84%, Mn:1.4-1.44%, Cr:2.8-3.0%, V:0.03-0.04%, Mo:0.3-0.35%, Ba:0.8-0.85%, S :≤0.01%, P :≤0.01%; Surplus is Fe.
Preferably, each composition and weight percent are: C:0.82-0.84%, Si:0.81-0.84%, Mn:1.42-1.44%, Cr:2.85-3.0%, V:0.032-0.04%, Mo:0.32-0.35%, Ba:0.8-0.83%, S :≤0.01%, P :≤0.01%; Surplus is Fe.
Preferably, each composition and weight percent are: C:0.82%, Si:0.83%, Mn:1.41%, Cr:2.95%, V:0.036%, Mo:0.32%, Ba:0.84%, S:0.01%, P:0.008%; Surplus is Fe.
Preferably, each composition and weight percent are: C:0.83%, Si:0.81%, Mn:1.43%, Cr:2.85%, V:0.032%, Mo:0.34%, Ba:0.82%, S:0.007%, P:0.01%; Surplus is Fe.
The preparation method of abrasion-proof steel ball for ball mill, comprises the following steps:
(1) melting technology: adopt medium-frequency induction furnace melting, temperature is 1560-1570 DEG C;
(2) cast: temperature 1410-1420; Duration: 6-7 minutes;
(3) devan, polish;
(4) thermal treatment:
Quench treatment: be heated to 400 DEG C with the speed of 80 DEG C/h, then be incubated 1.5-1.6 hours at the temperature of 400-410 DEG C, then be heated to 820 DEG C with the speed of 60 DEG C/h, then be incubated 1.6-1.7 hours at the temperature of 820-830 DEG C; Finally be cooled to room temperature with the speed of 50 DEG C/h;
Temper: be heated to 300 DEG C with the speed of 60 DEG C/h, then be incubated 1.4-1.5 hours at the temperature of 300-310 DEG C, then be heated to 540 DEG C with the speed of 50 DEG C/h, then be incubated 1.2-1.4 hours at the temperature of 540-560 DEG C; Finally be cooled to room temperature with the speed of 30 DEG C/h.
Compared with prior art, beneficial effect of the present invention is:
Abrasion-proof steel ball of the present invention has higher intensity, hardness, toughness, and long service life has good wear resistance, in being adapted to, minor diameter ball mill, and Rockwell hardness: 62-64HRC, impelling strength: 7.4-7.6J/cm
2, ball falling impact fatigue lifetime>=12500 time.
Embodiment
The present invention will be further described below:
Embodiment 1:
A kind of ball mill abrasion-proof steel ball, each composition and weight percent are: C:0.82%, Si:0.83%, Mn:1.41%, Cr:2.95%, V:0.036%, Mo:0.32%, Ba:0.84%, S:0.01%, P:0.008%; Surplus is Fe.
The preparation method of abrasion-proof steel ball for ball mill, comprises the following steps:
(1) melting technology: adopt medium-frequency induction furnace melting, temperature is 1564 DEG C;
(2) cast: temperature 1415; Duration: 6.2 minutes;
(3) devan, polish;
(4) thermal treatment:
Quench treatment: be heated to 400 DEG C with the speed of 80 DEG C/h, then be incubated 1.55 hours at the temperature of 405 DEG C, then be heated to 820 DEG C with the speed of 60 DEG C/h, then be incubated 1.62 hours at the temperature of 826 DEG C; Finally be cooled to room temperature with the speed of 50 DEG C/h;
Temper: be heated to 300 DEG C with the speed of 60 DEG C/h, then be incubated 1.45 hours at the temperature of 306 DEG C, then be heated to 540 DEG C with the speed of 50 DEG C/h, then be incubated 1.3 hours at the temperature of 550 DEG C; Finally be cooled to room temperature with the speed of 30 DEG C/h.
Embodiment 2:
A kind of ball mill abrasion-proof steel ball, each composition and weight percent are: C:0.83%, Si:0.81%, Mn:1.43%, Cr:2.85%, V:0.032%, Mo:0.34%, Ba:0.82%, S:0.007%, P:0.01%; Surplus is Fe.
The preparation method of abrasion-proof steel ball for ball mill, comprises the following steps:
(1) melting technology: adopt medium-frequency induction furnace melting, temperature is 1568 DEG C;
(2) cast: temperature 1412; Duration: 6.8 minutes;
(3) devan, polish;
(4) thermal treatment:
Quench treatment: be heated to 400 DEG C with the speed of 80 DEG C/h, then be incubated 1.52 hours at the temperature of 408 DEG C, then be heated to 820 DEG C with the speed of 60 DEG C/h, then be incubated 1.68 hours at the temperature of 822 DEG C; Finally be cooled to room temperature with the speed of 50 DEG C/h;
Temper: be heated to 300 DEG C with the speed of 60 DEG C/h, then be incubated 1.48 hours at the temperature of 302 DEG C, then be heated to 540 DEG C with the speed of 50 DEG C/h, then be incubated 1.25 hours at the temperature of 545 DEG C; Finally be cooled to room temperature with the speed of 30 DEG C/h.
Embodiment 3:
A kind of ball mill abrasion-proof steel ball, each composition and weight percent are: C:0.8%, Si:0.84%, Mn:1.4%, Cr:3.0%, V:0.03%, Mo:0.35%, Ba:0.8%, S:0.01%, P:0.01%; Surplus is Fe.
The preparation method of abrasion-proof steel ball for ball mill, comprises the following steps:
(1) melting technology: adopt medium-frequency induction furnace melting, temperature is 1560 DEG C;
(2) cast: temperature 1420; Duration: 6 minutes;
(3) devan, polish;
(4) thermal treatment:
Quench treatment: be heated to 400 DEG C with the speed of 80 DEG C/h, then be incubated 1.5 hours at the temperature of 410 DEG C, then be heated to 820 DEG C with the speed of 60 DEG C/h, then be incubated 1.6 hours at the temperature of 830 DEG C; Finally be cooled to room temperature with the speed of 50 DEG C/h;
Temper: be heated to 300 DEG C with the speed of 60 DEG C/h, then be incubated 1.4 hours at the temperature of 310 DEG C, then be heated to 540 DEG C with the speed of 50 DEG C/h, then be incubated 1.2 hours at the temperature of 560 DEG C; Finally be cooled to room temperature with the speed of 30 DEG C/h.
Embodiment 4:
A kind of ball mill abrasion-proof steel ball, each composition and weight percent are: C:0.84%, Si:0.8%, Mn:1.44%, Cr:2.8%, V:0.04%, Mo:0.3%, Ba:0.85%, S:0.008%, P:0.01%; Surplus is Fe.
The preparation method of abrasion-proof steel ball for ball mill, comprises the following steps:
(1) melting technology: adopt medium-frequency induction furnace melting, temperature is 1570 DEG C;
(2) cast: temperature 1410; Duration: 7 minutes;
(3) devan, polish;
(4) thermal treatment:
Quench treatment: be heated to 400 DEG C with the speed of 80 DEG C/h, then be incubated 1.6 hours at the temperature of 400 DEG C, then be heated to 820 DEG C with the speed of 60 DEG C/h, then be incubated 1.7 hours at the temperature of 820 DEG C; Finally be cooled to room temperature with the speed of 50 DEG C/h;
Temper: be heated to 300 DEG C with the speed of 60 DEG C/h, then be incubated 1.5 hours at the temperature of 300 DEG C, then be heated to 540 DEG C with the speed of 50 DEG C/h, then be incubated 1.4 hours at the temperature of 540 DEG C; Finally be cooled to room temperature with the speed of 30 DEG C/h.
Embodiment 5:
A kind of ball mill abrasion-proof steel ball, each composition and weight percent are: C:0.8%, Si:0.8%, Mn:1.44%, Cr:3.0%, V:0.03%, Mo:0.3%, Ba:0.85%, S:0.01%, P:0.008%; Surplus is Fe.
The preparation method of abrasion-proof steel ball for ball mill, comprises the following steps:
(1) melting technology: adopt medium-frequency induction furnace melting, temperature is 1560 DEG C;
(2) cast: temperature 1410; Duration: 6 minutes;
(3) devan, polish;
(4) thermal treatment:
Quench treatment: be heated to 400 DEG C with the speed of 80 DEG C/h, then be incubated 1.5 hours at the temperature of 410 DEG C, then be heated to 820 DEG C with the speed of 60 DEG C/h, then be incubated 1.6 hours at the temperature of 820 DEG C; Finally be cooled to room temperature with the speed of 50 DEG C/h;
Temper: be heated to 300 DEG C with the speed of 60 DEG C/h, then be incubated 1.5 hours at the temperature of 310 DEG C, then be heated to 540 DEG C with the speed of 50 DEG C/h, then be incubated 1.2 hours at the temperature of 540 DEG C; Finally be cooled to room temperature with the speed of 30 DEG C/h.
Through test, detected result is as follows:
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. a ball mill abrasion-proof steel ball, is characterized in that: each composition and weight percent are: C:0.8-0.84%, Si:0.8-0.84%, Mn:1.4-1.44%, Cr:2.8-3.0%, V:0.03-0.04%, Mo:0.3-0.35%, Ba:0.8-0.85%, S :≤0.01%, P :≤0.01%; Surplus is Fe.
2. ball mill abrasion-proof steel ball according to claim 1, is characterized in that: each composition and weight percent are: C:0.82-0.84%, Si:0.81-0.84%, Mn:1.42-1.44%, Cr:2.85-3.0%, V:0.032-0.04%, Mo:0.32-0.35%, Ba:0.8-0.83%, S :≤0.01%, P :≤0.01%; Surplus is Fe.
3. ball mill abrasion-proof steel ball according to claim 1, is characterized in that: each composition and weight percent are: C:0.82%, Si:0.83%, Mn:1.41%, Cr:2.95%, V:0.036%, Mo:0.32%, Ba:0.84%, S:0.01%, P:0.008%; Surplus is Fe.
4. ball mill abrasion-proof steel ball according to claim 1, is characterized in that: each composition and weight percent are: C:0.83%, Si:0.81%, Mn:1.43%, Cr:2.85%, V:0.032%, Mo:0.34%, Ba:0.82%, S:0.007%, P:0.01%; Surplus is Fe.
5. the preparation method of abrasion-proof steel ball for ball mill according to claim 1, is characterized in that, comprises the following steps:
(1) melting technology: adopt medium-frequency induction furnace melting, temperature is 1560-1570 DEG C;
(2) cast: temperature 1410-1420; Duration: 6-7 minutes;
(3) devan, polish;
(4) thermal treatment:
Quench treatment: be heated to 400 DEG C with the speed of 80 DEG C/h, then be incubated 1.5-1.6 hours at the temperature of 400-410 DEG C, then be heated to 820 DEG C with the speed of 60 DEG C/h, then be incubated 1.6-1.7 hours at the temperature of 820-830 DEG C; Finally be cooled to room temperature with the speed of 50 DEG C/h;
Temper: be heated to 300 DEG C with the speed of 60 DEG C/h, then be incubated 1.4-1.5 hours at the temperature of 300-310 DEG C, then be heated to 540 DEG C with the speed of 50 DEG C/h, then be incubated 1.2-1.4 hours at the temperature of 540-560 DEG C; Finally be cooled to room temperature with the speed of 30 DEG C/h.
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| CN201410332406.XA CN104120353B (en) | 2014-07-11 | 2014-07-11 | A kind of ball mill abrasion-proof steel ball |
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| CN201410332406.XA CN104120353B (en) | 2014-07-11 | 2014-07-11 | A kind of ball mill abrasion-proof steel ball |
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| CN104120353B CN104120353B (en) | 2016-05-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184523A (en) * | 2019-06-03 | 2019-08-30 | 江苏创斯达科技有限公司 | A kind of stepless transmission abrasion-proof steel ball and preparation method thereof |
| CN115090384A (en) * | 2022-07-14 | 2022-09-23 | 江苏首盾耐磨材料有限公司 | Wear-resistant steel ball for ball mill |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1650759A1 (en) * | 1989-05-24 | 1991-05-23 | Киевский Политехнический Институт Им.50-Летия Великой Октябрьской Социалистической Революции | Steel |
| CN102876961A (en) * | 2012-08-31 | 2013-01-16 | 宁国市金六星研磨材料科技有限公司 | Novel ultralow-manganese and high-chromium wear-resistant and corrosion-resistant cast grinding ball |
| CN103627955A (en) * | 2013-11-25 | 2014-03-12 | 内蒙古包钢钢联股份有限公司 | Steel for high-carbon wear-resisting ball material and production method thereof |
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2014
- 2014-07-11 CN CN201410332406.XA patent/CN104120353B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1650759A1 (en) * | 1989-05-24 | 1991-05-23 | Киевский Политехнический Институт Им.50-Летия Великой Октябрьской Социалистической Революции | Steel |
| CN102876961A (en) * | 2012-08-31 | 2013-01-16 | 宁国市金六星研磨材料科技有限公司 | Novel ultralow-manganese and high-chromium wear-resistant and corrosion-resistant cast grinding ball |
| CN103627955A (en) * | 2013-11-25 | 2014-03-12 | 内蒙古包钢钢联股份有限公司 | Steel for high-carbon wear-resisting ball material and production method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184523A (en) * | 2019-06-03 | 2019-08-30 | 江苏创斯达科技有限公司 | A kind of stepless transmission abrasion-proof steel ball and preparation method thereof |
| CN115090384A (en) * | 2022-07-14 | 2022-09-23 | 江苏首盾耐磨材料有限公司 | Wear-resistant steel ball for ball mill |
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| CN104120353B (en) | 2016-05-18 |
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Inventor after: Yang Ming Inventor after: Li Hecheng Inventor before: Yang Ming |
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Effective date of registration: 20160608 Address after: 242300 Anhui economic and Technological Development Zone, Ningguo, Wang Wang Park S104 Road on the eastern side of the road on the south side of Industrial Road, No. two Patentee after: ANHUI SANFANG NEW MATERIAL TECHNOLOGY Co.,Ltd. Address before: 242300, Anhui province Xuancheng city Ningguo River Lek office pay Bay Patentee before: ANHUI SANFANG CAST GRINDING MATERIALS Co.,Ltd. |
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Denomination of invention: A kind of wear-resistant steel ball for ball mill Effective date of registration: 20221227 Granted publication date: 20160518 Pledgee: Industrial Commercial Bank of China Ltd. Ningguo branch Pledgor: ANHUI SANFANG NEW MATERIAL TECHNOLOGY Co.,Ltd. Registration number: Y2022980029200 |