CN104120360A - Lining plate for high-chromium ball mill - Google Patents
Lining plate for high-chromium ball mill Download PDFInfo
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- CN104120360A CN104120360A CN201410364514.5A CN201410364514A CN104120360A CN 104120360 A CN104120360 A CN 104120360A CN 201410364514 A CN201410364514 A CN 201410364514A CN 104120360 A CN104120360 A CN 104120360A
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- ball mill
- normalizing
- grinding machine
- ball
- temperature
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Abstract
The invention discloses a lining plate for a high-chromium ball mill. The lining plate comprises the following components in percentage by weight: 1.8-2.2% of C, 0.5-0.7% of Si, 0.9-1.1% of Mn, 17-19% of Cr, 1.1-1.3% of Mo, 0.4-0.7% of Ca, 0.7-1.2% of Al, 1.5-2.3% of Ti, 0.01-0.04% of S, 0.02-0.03% of P and the balance of Fe and inevitable impurities, wherein a carbide (Fe, Cr)7C3 can be formed, and the content of (Fe, Cr)7C3 complies with the following formula: (Fe, Cr)7C3 = 5*C+ Cr+(1.7-2.3). The lining plate disclosed by the invention has relatively high wear resistance, moderate hardness and relatively high elasticity limit, yield point and toughness, the impact toughness can reach 11-13J/cm<2>, and thus the lining plate can withstand the impact of a milling ball or a milling segment.
Description
Technical field
The present invention relates to ball grinding machine lining board technical field, relate in particular to a kind of high chromium lining sheet for ball mill.
Background technology
Ball mill is one of widely used Super-fine grinder machinery in industrial production.Ball mill is lumpy material to be broken into the machine of pulverulent material, and it is ball mill barrel rotation when producing, and drives material and steel ball in cylinder to be rotated formation drop percussion movement.Hollow material blocking ring liner plate or solid material stopping ring liner plate that ball mill is mounted in steel ball and material and cylindrical shell clash into, and steel ball, material mutually clashes into rubbing effect in rotary barrel makes powder by lumpy materials such as ores, wherein liner plate can be used to protect cylindrical shell, it is important base parts and components, especially accurate industrial lining board plays an important role in the national economic development, liner plate makes cylindrical shell avoid grinding element and material directly impacts and friction, also can utilize multi-form liner plate to adjust the kinestate of grinding element simultaneously, strengthen the porphyrization of grinding element to material, contribute to improve the mill efficiency of grinding machine, increase output, reduce metal consumption, current domestic ball mill target mostly is cement, coal, ore, cinder etc., liner plate percentage of damage when ball mill is used, hardness and impelling strength require more and more higher.
Summary of the invention
The technical problem that basic background technology exists, the present invention proposes a kind of high chromium lining sheet for ball mill, has higher wear resisting property, and hardness is moderate, and has higher elastic limit, yield-point and toughness, and impelling strength can reach 11-13J/cm
2, make liner plate can bear the impact of abrading-ball or mill section.
A kind of high chromium lining sheet for ball mill that the present invention proposes, its compositions in weight percentage comprises: C:1.8-2.2%, Si:0.5-0.7%, Mn:0.9-1.1%, Cr:17-19%, Mo:1.1-1.3%, Ca:0.4-0.7%, Al:0.7-1.2%, Ti:1.5-2.3%, S:0.01-0.04%, P:0.02-0.03%, surplus is Fe and inevitable impurity, wherein can form carbide (Fe, Cr)
7c
3, (Fe, Cr)
7c
3content meet following formula: (Fe, Cr)
7c
3=5 * C+Cr+ (1.7～2.3);
Its preparation process comprises melting, cast, four steps of normalizing and tempering:
S1, melting: take each raw material and carry out obtaining aluminium alloy after melting;
S2, cast: aluminium alloy is come out of the stove and obtained ball grinding machine lining board idiosome to pouring into a mould in mould;
S3, normalizing: the ball grinding machine lining board idiosome that S2 is obtained is heated to 900-1000 ℃, temperature-rise period meets T=(25～35)+arcsin (t+1)
2t is temperature, T unit is ℃, t is the time, and t unit is min, after insulation 10-20min, the average heating speed that continues to heat with 10-15 ℃/min rises to 1150-1200 ℃, after insulation 1.5-2h, take out and air-cooledly obtain ball grinding machine lining board after normalizing to room temperature, its average cooling rate is 20-30 ℃/min;
S4, tempering: ball grinding machine lining board after normalizing is placed in to electric furnace, and the average heating speed by temperature with 9-10 ℃/min rises to after 470-480 ℃, insulation 3.2-3.8h, takes out water-cooled and obtains high chromium lining sheet for ball mill.
Preferably, the weight ratio of Cr and C is 9:1.
Preferably, (Fe, Cr)
7c
3content be 29.5-30.5%.
When producing various iron or iron alloy by iron ore, due in iron ore often association have metal or the nonmetalliferous ores such as phosphorus, sulphur, cause the impurity that contains the elements such as phosphorus, sulphur and be difficult to avoid in final iron or iron alloy.
The present invention adopts the composition of Gao Ge, the eutectic carbides in liner plate is increased, and can improve the anti-corrosion wear of liner plate; By normalizing, make grain refining and distribution of carbides homogenizing again, remove internal stress, increase hardness, the main Types of carbide is wherein (Fe, Cr)
7c
3, and work as (Fe, Cr)
7c
3content meet following formula: (Fe, Cr)
7c
3=5 * C+Cr+ (1.7～2.3), has significantly improved the wear resisting property of liner plate, and the temperature-rise period of normalizing meets T=(25～35)+arcsin (t+1)
2, T is temperature, and T unit is ℃, and t is the time, and t unit is min, and liner plate can be rapidly heated to target temperature, then makes liner plate internal and external temperature remain consistent by insulation; Adopt afterwards the air-cooled too fast liner plate that causes of speed of cooling of avoiding broken; By average tempering, obtain tempering troostite again, the hardness of liner plate is slightly declined, reach 55-59HRC, but have higher elastic limit, yield-point and toughness, impelling strength can reach 11-13J/cm
2, make liner plate can bear the impact of abrading-ball or mill section, reduce the percentage of damage of abrading-ball, mill section or liner plate.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is elaborated.
Embodiment 1
A kind of high chromium lining sheet for ball mill that the present invention proposes, its compositions in weight percentage comprises: C:1.8%, Si:0.7%, Mn:0.9%, Cr:19%, Mo:1.1%, Ca:0.7%, Al:0.7%, Ti:2.3%, S:0.01%, P:0.03%, surplus is Fe and inevitable impurity, wherein can form carbide (Fe, Cr)
7c
3, (Fe, Cr)
7c
3content meet following formula: (Fe, Cr)
7c
3=5 * C+Cr+1.7;
Its preparation process comprises melting, cast, four steps of normalizing and tempering:
S1, melting: take each raw material and carry out obtaining aluminium alloy after melting;
S2, cast: aluminium alloy is come out of the stove and obtained ball grinding machine lining board idiosome to pouring into a mould in mould;
S3, normalizing: the ball grinding machine lining board idiosome that S2 is obtained is heated to 1000 ℃, temperature-rise period meets T=25+arcsin (t+1)
2, T is temperature, T unit is ℃ that t is the time, t unit is min, and after insulation 10min, the average heating speed that continues to heat with 15 ℃/min rises to 1150 ℃, after insulation 2h, take out and air-cooledly obtain ball grinding machine lining board after normalizing to room temperature, its average cooling rate is 20 ℃/min;
S4, tempering: ball grinding machine lining board after normalizing is placed in to electric furnace, and the average heating speed by temperature with 10 ℃/min rises to after 470 ℃, insulation 3.8h, takes out water-cooled and obtains high chromium lining sheet for ball mill.
Embodiment 2
A kind of high chromium lining sheet for ball mill that the present invention proposes, its compositions in weight percentage comprises: C:2.2%, Si:0.5%, Mn:1.1%, Cr:17%, Mo:1.3%, Ca:0.4%, Al:1.2%, Ti:1.5%, S:0.04%, P:0.02%, surplus is Fe and inevitable impurity, wherein can form carbide (Fe, Cr)
7c
3, (Fe, Cr)
7c
3content meet following formula: (Fe, Cr)
7c
3=5 * C+Cr+2.3;
Its preparation process comprises melting, cast, four steps of normalizing and tempering:
S1, melting: take each raw material and carry out obtaining aluminium alloy after melting;
S2, cast: aluminium alloy is come out of the stove and obtained ball grinding machine lining board idiosome to pouring into a mould in mould;
S3, normalizing: the ball grinding machine lining board idiosome that S2 is obtained is heated to 950 ℃, temperature-rise period meets T=20+arcsin (t+1)
2, T is temperature, T unit is ℃ that t is the time, t unit is min, and after insulation 13min, the average heating speed that continues to heat with 14 ℃/min rises to 1180 ℃, after insulation 1.8h, take out and air-cooledly obtain ball grinding machine lining board after normalizing to room temperature, its average cooling rate is 25 ℃/min;
S4, tempering: ball grinding machine lining board after normalizing is placed in to electric furnace, and the average heating speed by temperature with 9.7 ℃/min rises to after 476 ℃, insulation 3.5h, takes out water-cooled and obtains high chromium lining sheet for ball mill.
Embodiment 3
A kind of high chromium lining sheet for ball mill that the present invention proposes, its compositions in weight percentage comprises: C:2%, Si:0.6%, Mn:1%, Cr:18%, Mo:1.2%, Ca:0.6%, Al:1%, Ti:2%, S:0.02%, P:0.025%, surplus is Fe and inevitable impurity, wherein can form carbide (Fe, Cr)
7c
3, (Fe, Cr)
7c
3content meet following formula: (Fe, Cr)
7c
3=5 * C+Cr+2;
Its preparation process comprises melting, cast, four steps of normalizing and tempering:
S1, melting: take each raw material and carry out obtaining aluminium alloy after melting;
S2, cast: aluminium alloy is come out of the stove and obtained ball grinding machine lining board idiosome to pouring into a mould in mould;
S3, normalizing: the ball grinding machine lining board idiosome that S2 is obtained is heated to 900 ℃, temperature-rise period meets T=35+arcsin (t+1)
2, T is temperature, T unit is ℃ that t is the time, t unit is min, and after insulation 10min, the average heating speed that continues to heat with 15 ℃/min rises to 1150 ℃, after insulation 2h, take out and air-cooledly obtain ball grinding machine lining board after normalizing to room temperature, its average cooling rate is 20 ℃/min;
S4, tempering: ball grinding machine lining board after normalizing is placed in to electric furnace, and the average heating speed by temperature with 10 ℃/min rises to after 470 ℃, insulation 3.8h, takes out water-cooled and obtains high chromium lining sheet for ball mill.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; according to technical scheme of the present invention and inventive concept thereof, be equal to replacement or changed, within all should being encompassed in protection scope of the present invention.
Claims (3)
1. a high chromium lining sheet for ball mill, is characterized in that, its compositions in weight percentage comprises: C:1.8-2.2%, Si:0.5-0.7%, Mn:0.9-1.1%, Cr:17-19%, Mo:1.1-1.3%, Ca:0.4-0.7%, Al:0.7-1.2%, Ti:1.5-2.3%, S:0.01-0.04%, P:0.02-0.03%, surplus is Fe and inevitable impurity, wherein can form carbide (Fe, Cr)
7c
3, (Fe, Cr)
7c
3content meet following formula: (Fe, Cr)
7c
3=5 * C+Cr+ (1.7～2.3);
Its preparation process comprises melting, cast, four steps of normalizing and tempering:
S1, melting: take each raw material and carry out obtaining aluminium alloy after melting;
S2, cast: aluminium alloy is come out of the stove and obtained ball grinding machine lining board idiosome to pouring into a mould in mould;
S3, normalizing: the ball grinding machine lining board idiosome that S2 is obtained is heated to 900-1000 ℃, temperature-rise period meets T=(25～35)+arcsin (t+1)
2t is temperature, T unit is ℃, t is the time, and t unit is min, after insulation 10-20min, the average heating speed that continues to heat with 10-15 ℃/min rises to 1150-1200 ℃, after insulation 1.5-2h, take out and air-cooledly obtain ball grinding machine lining board after normalizing to room temperature, its average cooling rate is 20-30 ℃/min;
S4, tempering: ball grinding machine lining board after normalizing is placed in to electric furnace, and the average heating speed by temperature with 9-10 ℃/min rises to after 470-480 ℃, insulation 3.2-3.8h, takes out water-cooled and obtains high chromium lining sheet for ball mill.
2. high chromium lining sheet for ball mill as claimed in claim 1, is characterized in that, the weight ratio of Cr and C is 9:1.
3. high chromium lining sheet for ball mill as claimed in claim 2, is characterized in that (Fe, Cr)
7c
3content be 29.5-30.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364514.5A CN104120360B (en) | 2014-07-28 | 2014-07-28 | A kind of high chromium lining sheet for ball mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364514.5A CN104120360B (en) | 2014-07-28 | 2014-07-28 | A kind of high chromium lining sheet for ball mill |
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|---|---|
| CN104120360A true CN104120360A (en) | 2014-10-29 |
| CN104120360B CN104120360B (en) | 2016-07-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109136776A (en) * | 2018-07-11 | 2019-01-04 | 马鞍山力搏机械制造有限公司 | A kind of preparation method of high-chromium alloy liner plate |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2021386468A1 (en) * | 2020-11-30 | 2023-06-01 | Weir Minerals Australia Ltd | Complex materials |
Citations (6)
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|---|---|---|---|---|
| JPS563681A (en) * | 1979-06-22 | 1981-01-14 | Nippon Steel Corp | Tool having superior abrasion-resisting property |
| JPH04141560A (en) * | 1990-10-01 | 1992-05-15 | Hitachi Metals Ltd | Fuel jetting nozzle body having superior corrosion and wear resistance |
| CN1080666A (en) * | 1993-06-11 | 1994-01-12 | 山东省冶金研究所 | A kind of low carbon high chrome casting iron high-abrasive material |
| KR20000065478A (en) * | 1999-04-06 | 2000-11-15 | 김민기 | An aiioy of steel-chrome steel system |
| CN102383066A (en) * | 2011-11-14 | 2012-03-21 | 山东省汇丰机械集团总公司章丘市铸造厂 | Abrasion resistant cast steel and preparation method thereof |
| CN103789650A (en) * | 2012-11-03 | 2014-05-14 | 无锡市森信精密机械厂 | Preparation method of wear-resistant high-speed steel |
-
2014
- 2014-07-28 CN CN201410364514.5A patent/CN104120360B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS563681A (en) * | 1979-06-22 | 1981-01-14 | Nippon Steel Corp | Tool having superior abrasion-resisting property |
| JPH04141560A (en) * | 1990-10-01 | 1992-05-15 | Hitachi Metals Ltd | Fuel jetting nozzle body having superior corrosion and wear resistance |
| CN1080666A (en) * | 1993-06-11 | 1994-01-12 | 山东省冶金研究所 | A kind of low carbon high chrome casting iron high-abrasive material |
| KR20000065478A (en) * | 1999-04-06 | 2000-11-15 | 김민기 | An aiioy of steel-chrome steel system |
| CN102383066A (en) * | 2011-11-14 | 2012-03-21 | 山东省汇丰机械集团总公司章丘市铸造厂 | Abrasion resistant cast steel and preparation method thereof |
| CN103789650A (en) * | 2012-11-03 | 2014-05-14 | 无锡市森信精密机械厂 | Preparation method of wear-resistant high-speed steel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109136776A (en) * | 2018-07-11 | 2019-01-04 | 马鞍山力搏机械制造有限公司 | A kind of preparation method of high-chromium alloy liner plate |
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|---|---|
| CN104120360B (en) | 2016-07-13 |
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Address after: 242300 Tian Cun, Meilin Town, Ningguo City, Xuancheng City, Anhui Province Patentee after: Ningguo Ningwu New Material Technology Co.,Ltd. Address before: 242300 Tian Cun, Meilin Town, Ningguo City, Xuancheng City, Anhui Province Patentee before: NINGGUO NINGWU WEAR-RESISTANT MATERIAL CO.,LTD. |
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Effective date of registration: 20221214 Address after: 276000 middle section of Kunming Road, Zhimadun sub district office, economic and Technological Development Zone, Linyi City, Shandong Province Patentee after: LINYI JINSHENG MACHINERY MATCHING CO.,LTD. Address before: 242300 Tian Cun, Meilin Town, Ningguo City, Xuancheng City, Anhui Province Patentee before: Ningguo Ningwu New Material Technology Co.,Ltd. |
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