CN104087821A - High-toughness wear-resistant ball - Google Patents
High-toughness wear-resistant ball Download PDFInfo
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- CN104087821A CN104087821A CN201410364529.1A CN201410364529A CN104087821A CN 104087821 A CN104087821 A CN 104087821A CN 201410364529 A CN201410364529 A CN 201410364529A CN 104087821 A CN104087821 A CN 104087821A
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- resistant ball
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- aluminium alloy
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Abstract
The invention discloses a high-toughness wear-resistant ball which comprises the following components in percentage by weight: 4.00-4.20% of C, 2.10-2.50% of Si, 0.55-0.75% of Mn, 0.60-0.80% of Mo, 0.30-0.45% of Cu, 0.36-0.46% of Cr, 0.03-0.06% of Mg, 0.02-0.04% of V, 0.04-0.05% of Ti, 0.02-0.04% of Zr, 0.02-0.04% of Re, 0.01-0.03% of S, 0.04-0.06% of P, and the balance of Fe and inevitable impurities. The high-toughness wear-resistant ball has excellent wear resistance, the hardness of the wear-resistant ball is up to 55-58 HRC, the toughness is up to 17-18 J/cm<2>, the breaking ratio of the wear-resistant ball is lowered, and the service life is prolonged.
Description
Technical field
The present invention relates to wear-resistant ball technical field, relate in particular to a kind of high-toughness wear-resistant ball.
Background technology
Ball mill is one of widely used Super-fine grinder machinery in industrial production.Ball mill steel ball is ball mill equipment grinding material medium, produces ablation, thereby the particle diameter of material is further reduced by the collision friction between ball mill steel ball, between steel ball and material.In prior art, mill Jie steel ball of ball mill is mainly ball milling steel casting or the nodular cast iron parts such as chromium alloy, Mn series alloy, as high chromium steel ball, low-chrome steel ball, multicomponent alloy steel ball and vanadium-titanium-chromium alloy steel ball etc., its target mostly is cement, coal, ore, cinder etc.Coal pulverizer steel ball in use hardness and the wear resistance of ball is one of principal element affecting coal pulverizer shaping effect.In order to improve the durability of crushing efficiency and steel ball, need steel ball surface to have enough hardness and fastness to rubbing.Meanwhile, in process of lapping, the collision occurring between steel ball and abrasive material, steel ball and liner plate and steel ball and steel ball is inevitable, therefore, also requires steel ball to have certain toughness, avoids brokenly ball, and this just proposes higher requirement to the composition of steel ball.
Summary of the invention
The technical problem that basic background technology exists, the present invention proposes a kind of high-toughness wear-resistant ball, and wear resisting property is outstanding, and the hardness of wear-resistant ball reaches 55-58HRC, and toughness has also reached 17-18J/cm
2, the percentage of damage of reduction wear-resistant ball, increases the service life.
A kind of high-toughness wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises: C:4.00-4.20%, Si:2.10-2.50%, Mn:0.55-0.75%, Mo:0.60-0.80%, Cu:0.30-0.45%, Cr:0.36-0.46%, Mg:0.03-0.06%, V:0.02-0.04%, Ti:0.04-0.05%, Zr:0.02-0.04%, Re:0.02-0.04%, S:0.01-0.03%, P:0.04-0.06%, all the other are Fe and inevitable impurity;
Preparation process comprises melting, nodularization, cast, quenching, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, vanadium iron, red copper and chromium steel are placed in to cupola furnace and carry out melting, cupola furnace temperature is risen to 1400-1450 ℃, insulation 15-20min, add again after magnesium ingot, zirconium ingot and titanium ingot, temperature is risen to 1460-1500 ℃, insulation 10-15min, after the slag that floats over aluminium alloy surface is pulled out, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: in aluminium alloy A, add after nodulizing agent, nucleating agent and ferrosilicon, temperature is maintained to 1460-1500 ℃, insulation 5-7min obtains nodularization aluminium alloy;
S3, cast: after nodularization aluminium alloy is poured in mould, when nodularization aluminium alloy temperature is down to 960-980 ℃, take out, obtain high-toughness wear-resistant ball idiosome, wherein teeming temperature is 1350-1380 ℃;
S4, quenching: high-toughness wear-resistant ball idiosome is carried out to oil quenching, when being down to 290-300 ℃, high-toughness wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 330-340 ℃ is incubated after 45-55min, take out air cooling and obtain high-toughness wear-resistant ball, the KNO that wherein heating medium in constant-temperature oven is melting
3, NaNO
3, NaNO
2mixture, KNO
3, NaNO
3, NaNO
2weight ratio be 23-25:52-54:22-24.
Preferably, the weight ratio of C and Si is 4.05-4.15:2.2-2.4.
Preferably, the weight ratio of Mg, Ti and Zr is 0.04-0.05:0.042-0.045:0.023-0.034.
Preferably, in the S4 of preparation process, high-toughness wear-resistant ball idiosome is carried out to oil quenching, when being down to 292-296 ℃, high-toughness wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 334-337 ℃ is incubated after 49-51min, take out air cooling and obtain high-toughness wear-resistant ball, the KNO that the heating medium in constant-temperature oven is melting
3, NaNO
3, NaNO
2mixture, KNO
3, NaNO
3, NaNO
2weight ratio be 24:53:23.
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 pig iron, steel scrap, manganese steel, molybdenum-iron, vanadium iron, red copper and chromium steel to coordinate the major ingredient as aluminium alloy A, realize the present invention's high and high requirement of impelling strength for wear-resistant ball density, improve in use grinding efficiency of wear-resistant ball, strengthen the wearing quality of wear-resistant ball; Add again magnesium ingot, zirconium ingot and titanium ingot to cooperatively interact, alloy liquid A carries out deoxidation denitrogenation, reduce the content of oxide compound and nitride in aluminium alloy A, further improve wear-resistant ball work-ing life, and magnesium, titanium, the residual raising wear-resistant ball corrosion resistant ability of three kinds of elements of zirconium in wear-resistant ball; Add nodulizing agent, nucleating agent and ferrosilicon, make to form ball graphite in wear-resistant ball, avoid or reduce wear-resistant ball situation about ftractureing occurs; Quenching process is casting waste heat progressive austempering, first adopt the mode of oil quenching, make the temperature fast-descending of wear-resistant ball idiosome, avoid upper bainite and form district, then by the mode of isothermal quenching, make wear-resistant ball idiosome carry out lower bainite isothermal transformation, can significantly reduce alloy addition, greatly saved production cost, compared with independent isothermal quenching technique, technique is easier; The KNO that in quenching process, the heating medium of constant-temperature oven is melting
3, NaNO
3, NaNO
2mixture, KNO
3, NaNO
3, NaNO
2weight ratio be 23-25:52-54:22-24, significantly improved the heat extraction coefficient of constant-temperature oven, make the austenite in wear-resistant ball be converted to lower bainite, increase substantially the toughness of ball-type alloy substrate.After testing, the hardness of wear-resistant ball reaches 55-58HRC, and toughness has also reached 17-18J/cm
2, meet industrial production required.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is elaborated.
Embodiment 1
A kind of high-toughness wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises: C:4.00%, Si:2.50%, Mn:0.55%, Mo:0.80%, Cu:0.30%, Cr:0.46%, Mg:0.03%, V:0.04%, Ti:0.04%, Zr:0.04%, Re:0.02%, S:0.03%, P:0.04%, all the other are Fe and inevitable impurity;
Preparation process comprises melting, nodularization, cast, quenching, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, vanadium iron, red copper and chromium steel are placed in to cupola furnace and carry out melting, cupola furnace temperature is risen to 1420 ℃, insulation 18min, add again after magnesium ingot, zirconium ingot and titanium ingot, temperature is risen to 1470 ℃, insulation 14min, after the slag that floats over aluminium alloy surface is pulled out, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: in aluminium alloy A, add after nodulizing agent, nucleating agent and ferrosilicon, temperature is maintained to 1470 ℃, insulation 6min obtains nodularization aluminium alloy;
S3, cast: after nodularization aluminium alloy is poured in mould, when nodularization aluminium alloy temperature is down to 975 ℃, take out, obtain high-toughness wear-resistant ball idiosome, wherein teeming temperature is 1370 ℃;
S4, quenching: high-toughness wear-resistant ball idiosome is carried out to oil quenching, when being down to 296 ℃, high-toughness wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 334 ℃ is incubated after 51min, takes out air cooling and obtains high-toughness wear-resistant ball, the KNO that the heating medium in constant-temperature oven is melting
3, NaNO
3, NaNO
2mixture, KNO
3, NaNO
3, NaNO
2weight ratio be 24:53:23.
Embodiment 2
A kind of high-toughness wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises: C:4.05%, Si:2.40%, Mn:0.60%, Mo:0.65%, Cu:0.35%, Cr:0.41%, Mg:0.04%, V:0.03%, Ti:0.045%, Zr:0.023%, Re:0.03%, S:0.02%, P:0.05%, all the other are Fe and inevitable impurity;
Preparation process comprises melting, nodularization, cast, quenching, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, vanadium iron, red copper and chromium steel are placed in to cupola furnace and carry out melting, cupola furnace temperature is risen to 1450 ℃, insulation 15min, add again after magnesium ingot, zirconium ingot and titanium ingot, temperature is risen to 1500 ℃, insulation 10min, after the slag that floats over aluminium alloy surface is pulled out, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: in aluminium alloy A, add after nodulizing agent, nucleating agent and ferrosilicon, temperature is maintained to 1500 ℃, insulation 5min obtains nodularization aluminium alloy;
S3, cast: after nodularization aluminium alloy is poured in mould, when nodularization aluminium alloy temperature is down to 980 ℃, take out, obtain high-toughness wear-resistant ball idiosome, wherein teeming temperature is 1350 ℃;
S4, quenching: high-toughness wear-resistant ball idiosome is carried out to oil quenching, when being down to 300 ℃, high-toughness wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 330 ℃ is incubated after 55min, takes out air cooling and obtains high-toughness wear-resistant ball, the KNO that wherein heating medium in constant-temperature oven is melting
3, NaNO
3, NaNO
2mixture, KNO
3, NaNO
3, NaNO
2weight ratio be 23:54:23.
Embodiment 3
A kind of high-toughness wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises: C:4.15%, Si:2.20%, Mn:0.72%, Mo:0.73%, Cu:0.41%, Cr:0.45%, Mg:0.05%, V:0.03%, Ti:0.042%, Zr:0.034%, Re:0.03%, S:0.02%, P:0.05%, all the other are Fe and inevitable impurity;
Preparation process comprises melting, nodularization, cast, quenching, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, vanadium iron, red copper and chromium steel are placed in to cupola furnace and carry out melting, cupola furnace temperature is risen to 1400 ℃, insulation 20min, add again after magnesium ingot, zirconium ingot and titanium ingot, temperature is risen to 1460 ℃, insulation 15min, after the slag that floats over aluminium alloy surface is pulled out, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: in aluminium alloy A, add after nodulizing agent, nucleating agent and ferrosilicon, temperature is maintained to 1460 ℃, insulation 7min obtains nodularization aluminium alloy;
S3, cast: after nodularization aluminium alloy is poured in mould, when nodularization aluminium alloy temperature is down to 960 ℃, take out, obtain high-toughness wear-resistant ball idiosome, wherein teeming temperature is 1380 ℃;
S4, quenching: high-toughness wear-resistant ball idiosome is carried out to oil quenching, when being down to 290 ℃, high-toughness wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 340 ℃ is incubated after 45min, takes out air cooling and obtains high-toughness wear-resistant ball, the KNO that wherein heating medium in constant-temperature oven is melting
3, NaNO
3, NaNO
2mixture, KNO
3, NaNO
3, NaNO
2weight ratio be 25:53:22.
Embodiment 4
A kind of high-toughness wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises: C:4.20%, Si:2.10%, Mn:0.75%, Mo:0.60%, Cu:0.45%, Cr:0.36%, Mg:0.06%, V:0.02%, Ti:0.05%, Zr:0.02%, Re:0.04%, S:0.01%, P:0.06%, all the other are Fe and inevitable impurity;
Preparation process comprises melting, nodularization, cast, quenching, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, vanadium iron, red copper and chromium steel are placed in to cupola furnace and carry out melting, cupola furnace temperature is risen to 1430 ℃, insulation 16min, add again after magnesium ingot, zirconium ingot and titanium ingot, temperature is risen to 1490 ℃, insulation 12min, after the slag that floats over aluminium alloy surface is pulled out, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: in aluminium alloy A, add after nodulizing agent, nucleating agent and ferrosilicon, temperature is maintained to 1490 ℃, insulation 5.6min obtains nodularization aluminium alloy;
S3, cast: after nodularization aluminium alloy is poured in mould, when nodularization aluminium alloy temperature is down to 970 ℃, take out, obtain high-toughness wear-resistant ball idiosome, wherein teeming temperature is 1380 ℃;
S4, quenching: high-toughness wear-resistant ball idiosome is carried out to oil quenching, when being down to 292 ℃, high-toughness wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 337 ℃ is incubated after 49min, takes out air cooling and obtains high-toughness wear-resistant ball, the KNO that the heating medium in constant-temperature oven is melting
3, NaNO
3, NaNO
2mixture, KNO
3, NaNO
3, NaNO
2weight ratio be 24:52:24.
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 (4)
1. a high-toughness wear-resistant ball, is characterized in that, its compositions in weight percentage comprises:
C:4.00-4.20%, Si:2.10-2.50%, Mn:0.55-0.75%, Mo:0.60-0.80%, Cu:0.30-0.45%, Cr:0.36-0.46%, Mg:0.03-0.06%, V:0.02-0.04%, Ti:0.04-0.05%, Zr:0.02-0.04%, Re:0.02-0.04%, S:0.01-0.03%, P:0.04-0.06%, all the other are Fe and inevitable impurity;
Preparation process comprises melting, nodularization, cast, quenching, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, vanadium iron, red copper and chromium steel are placed in to cupola furnace and carry out melting, cupola furnace temperature is risen to 1400-1450 ℃, insulation 15-20min, add again after magnesium ingot, zirconium ingot and titanium ingot, temperature is risen to 1460-1500 ℃, insulation 10-15min, after the slag that floats over aluminium alloy surface is pulled out, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: in aluminium alloy A, add after nodulizing agent, nucleating agent and ferrosilicon, temperature is maintained to 1460-1500 ℃, insulation 5-7min obtains nodularization aluminium alloy;
S3, cast: after nodularization aluminium alloy is poured in mould, when nodularization aluminium alloy temperature is down to 960-980 ℃, take out, obtain high-toughness wear-resistant ball idiosome, wherein teeming temperature is 1350-1380 ℃;
S4, quenching: high-toughness wear-resistant ball idiosome is carried out to oil quenching, when being down to 290-300 ℃, high-toughness wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 330-340 ℃ is incubated after 45-55min, take out air cooling and obtain high-toughness wear-resistant ball, the KNO that wherein heating medium in constant-temperature oven is melting
3, NaNO
3, NaNO
2mixture, KNO
3, NaNO
3, NaNO
2weight ratio be 23-25:52-54:22-24.
2. high-toughness wear-resistant ball as claimed in claim 1, is characterized in that, the weight ratio of C and Si is 4.05-4.15:2.2-2.4.
3. high-toughness wear-resistant ball as claimed in claim 2, is characterized in that, the weight ratio of Mg, Ti and Zr is 4-5:4.2-4.5:2.3-3.4.
4. high-toughness wear-resistant ball as described in claim 1-3 any one, it is characterized in that, in the S4 of preparation process, high-toughness wear-resistant ball idiosome is carried out to oil quenching, when being down to 292-296 ℃, high-toughness wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 334-337 ℃ is incubated after 49-51min, takes out air cooling and obtains high-toughness wear-resistant ball, the KNO that the heating medium in constant-temperature oven is melting
3, NaNO
3, NaNO
2mixture, KNO
3, NaNO
3, NaNO
2weight ratio be 24:53:23.
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| CN201410364529.1A CN104087821B (en) | 2014-07-28 | 2014-07-28 | A kind of high-toughness wear-resistant ball |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108486459A (en) * | 2018-04-20 | 2018-09-04 | 安徽省宁国市亚晨碾磨铸件有限责任公司 | A kind of wear-resistant high-ductility high strength excavator bucket tooth and its manufacturing method |
| CN110284048A (en) * | 2019-07-29 | 2019-09-27 | 沛县祥龙矿山机械配件有限公司 | A kind of ball mill high carbon and chromium high boron alloy steel ball and preparation method thereof |
| CN111286681A (en) * | 2020-02-16 | 2020-06-16 | 北京工业大学 | High-wear-resistance low-cost steel for forging wet grinding balls and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS60247037A (en) * | 1984-05-22 | 1985-12-06 | Mitsui Eng & Shipbuild Co Ltd | Cv-cast iron cylinder liner |
| JP4548263B2 (en) * | 2005-07-29 | 2010-09-22 | Ｊｆｅスチール株式会社 | Manufacturing method of cast iron products with excellent wear resistance |
| CN101429616A (en) * | 2008-12-18 | 2009-05-13 | 安阳钢铁集团有限责任公司 | Ductile cast iron and its smelting process and usage |
| CN103451510B (en) * | 2013-08-21 | 2015-08-12 | 石家庄金刚凯源动力科技有限公司 | The manufacture method of vermicular cast iron piston ring |
| CN103789603A (en) * | 2014-01-24 | 2014-05-14 | 宁国市中意耐磨材料有限公司 | Ausferrite nodular iron casting with adjustable performance and manufacturing method thereof |
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2014
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108486459A (en) * | 2018-04-20 | 2018-09-04 | 安徽省宁国市亚晨碾磨铸件有限责任公司 | A kind of wear-resistant high-ductility high strength excavator bucket tooth and its manufacturing method |
| CN110284048A (en) * | 2019-07-29 | 2019-09-27 | 沛县祥龙矿山机械配件有限公司 | A kind of ball mill high carbon and chromium high boron alloy steel ball and preparation method thereof |
| CN111286681A (en) * | 2020-02-16 | 2020-06-16 | 北京工业大学 | High-wear-resistance low-cost steel for forging wet grinding balls and preparation method thereof |
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