CN104087821B - A kind of high-toughness wear-resistant ball - Google Patents
A kind of high-toughness wear-resistant ball Download PDFInfo
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- CN104087821B CN104087821B CN201410364529.1A CN201410364529A CN104087821B CN 104087821 B CN104087821 B CN 104087821B CN 201410364529 A CN201410364529 A CN 201410364529A CN 104087821 B CN104087821 B CN 104087821B
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- resistant ball
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- aluminium alloy
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Abstract
The invention discloses a kind of high-toughness wear-resistant ball, 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.Wear resisting property of the present invention is outstanding, and the hardness of wear-resistant ball reaches 55-58HRC, and toughness also reaches 17-18J/cm2, reduces the percentage of damage of wear-resistant ball, increases the service life.
Description
Technical field
The present invention relates to wear-resistant ball technical field, particularly relate 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, thus reduced further by the particle diameter of material by the collision friction between ball mill steel ball, between steel ball and material.In prior art, the mill Jie steel ball mainly ball milling such as chromium alloy, Mn series alloy steel casting or nodular cast iron part of ball mill, 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.The coal pulverizer steel ball in use hardness of ball and wear resistance is one of principal element affecting coal pulverizer shaping effect.In order to improve the durability of crushing efficiency and steel ball, steel ball surface is needed to have enough hardness and fastness to rubbing.Meanwhile, in process of lapping, steel ball and abrasive material, steel ball and liner plate and the collision occurred between steel ball and steel ball inevitable, therefore, also require that steel ball has certain toughness, avoid brokenly ball, this just higher to the composition proposition of steel ball requirement.
Summary of the invention
The technical problem that basic background technology exists, the present invention proposes a kind of high-toughness wear-resistant ball, wear resisting property is outstanding, and the hardness of wear-resistant ball reaches 55-58HRC, and toughness also reaches 17-18J/cm
2, reduce the percentage of damage of wear-resistant ball, increase 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 cupola furnace and carry out melting, cupola furnace temperature is risen to 1400-1450 DEG C, insulation 15-20min, after adding magnesium ingot, zirconium ingot and titanium ingot again, temperature is risen to 1460-1500 DEG C, insulation 10-15min, after being pulled out by the slag floating over aluminium alloy surface, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: add nodulizing agent, nucleating agent and ferrosilicon in aluminium alloy A after, temperature is maintained 1460-1500 DEG C, insulation 5-7min obtains nodularization aluminium alloy;
S3, cast: nodularization aluminium alloy is poured into after in mould, take out when nodularization aluminium alloy temperature is down to 960-980 DEG C, obtain high-toughness wear-resistant ball idiosome, wherein teeming temperature is 1350-1380 DEG C;
S4, quenching: high-toughness wear-resistant ball idiosome is carried out oil quenching, take out when high-toughness wear-resistant ball idiosome temperature is down to 290-300 DEG C, then putting into temperature is after the constant-temperature oven of 330-340 DEG C carries out insulation 45-55min, take out air cooling and obtain high-toughness wear-resistant ball, the heating medium wherein in constant-temperature oven is the KNO of 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 oil quenching, take out when high-toughness wear-resistant ball idiosome temperature is down to 292-296 DEG C, then putting into temperature is after the constant-temperature oven of 334-337 DEG C carries out insulation 49-51min, take out air cooling and obtain high-toughness wear-resistant ball, the heating medium in constant-temperature oven is the KNO of melting
3, NaNO
3, NaNO
2mixture, KNO
3, NaNO
3, NaNO
2weight ratio be 24:53:23.
When being produced various iron or iron alloy by iron ore, due in iron ore often association have the metal such as phosphorus, sulphur or nonmetalliferous ore, cause in final iron or iron alloy containing the impurity that the element such as phosphorus, sulphur and being difficult to is avoided.
The present invention adopts the cooperation of the pig iron, steel scrap, manganese steel, molybdenum-iron, vanadium iron, red copper and chromium steel as the major ingredient of aluminium alloy A, realize the requirement that the present invention is high for wear-resistant ball density and impelling strength is high, improve wear-resistant ball in use grinding efficiency, strengthen the wearing quality of wear-resistant ball; Add magnesium ingot, zirconium ingot and titanium ingot again to cooperatively interact, alloy liquid A carries out deoxidation denitrogenation, reduce the content of oxide compound and nitride in aluminium alloy A, improve further wear-resistant ball work-ing life, and magnesium, titanium, the residual raising wear-resistant ball corrosion resistant ability of zirconium three kinds of elements in wear-resistant ball; Add nodulizing agent, nucleating agent and ferrosilicon, make to form ball graphite in wear-resistant ball, avoid or reduce the situation that cracking occurs wear-resistant ball; Quenching process is casting waste heat progressive austempering, first adopt the mode of oil quenching, the temperature of wear-resistant ball idiosome is declined fast, avoid upper bainite forming region, then by the mode of isothermal quenching, make wear-resistant ball idiosome carry out lower bainite isothermal transformation, significantly can reduce alloy addition, greatly saved production cost, compared with independent isothermal quenching technique, technique is easier; In quenching process, the heating medium of constant-temperature oven is the KNO of melting
3, NaNO
3, NaNO
2mixture, KNO
3, NaNO
3, NaNO
2weight ratio be 23-25:52-54:22-24, significantly improve 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 also reaches 17-18J/cm
2, meet needed for industrial production.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is described in detail.
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 cupola furnace and carry out melting, cupola furnace temperature is risen to 1420 DEG C, insulation 18min, after adding magnesium ingot, zirconium ingot and titanium ingot again, temperature is risen to 1470 DEG C, insulation 14min, after being pulled out by the slag floating over aluminium alloy surface, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: add nodulizing agent, nucleating agent and ferrosilicon in aluminium alloy A after, temperature is maintained 1470 DEG C, insulation 6min obtains nodularization aluminium alloy;
S3, cast: nodularization aluminium alloy is poured into after in mould, take out when nodularization aluminium alloy temperature is down to 975 DEG C, obtain high-toughness wear-resistant ball idiosome, wherein teeming temperature is 1370 DEG C;
S4, quenching: high-toughness wear-resistant ball idiosome is carried out oil quenching, take out when high-toughness wear-resistant ball idiosome temperature is down to 296 DEG C, then putting into temperature is after the constant-temperature oven of 334 DEG C carries out insulation 51min, and take out air cooling and obtain high-toughness wear-resistant ball, the heating medium in constant-temperature oven is the KNO of 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 cupola furnace and carry out melting, cupola furnace temperature is risen to 1450 DEG C, insulation 15min, after adding magnesium ingot, zirconium ingot and titanium ingot again, temperature is risen to 1500 DEG C, insulation 10min, after being pulled out by the slag floating over aluminium alloy surface, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: add nodulizing agent, nucleating agent and ferrosilicon in aluminium alloy A after, temperature is maintained 1500 DEG C, insulation 5min obtains nodularization aluminium alloy;
S3, cast: nodularization aluminium alloy is poured into after in mould, take out when nodularization aluminium alloy temperature is down to 980 DEG C, obtain high-toughness wear-resistant ball idiosome, wherein teeming temperature is 1350 DEG C;
S4, quenching: high-toughness wear-resistant ball idiosome is carried out oil quenching, take out when high-toughness wear-resistant ball idiosome temperature is down to 300 DEG C, then putting into temperature is after the constant-temperature oven of 330 DEG C carries out insulation 55min, and take out air cooling and obtain high-toughness wear-resistant ball, the heating medium wherein in constant-temperature oven is the KNO of 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 cupola furnace and carry out melting, cupola furnace temperature is risen to 1400 DEG C, insulation 20min, after adding magnesium ingot, zirconium ingot and titanium ingot again, temperature is risen to 1460 DEG C, insulation 15min, after being pulled out by the slag floating over aluminium alloy surface, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: add nodulizing agent, nucleating agent and ferrosilicon in aluminium alloy A after, temperature is maintained 1460 DEG C, insulation 7min obtains nodularization aluminium alloy;
S3, cast: nodularization aluminium alloy is poured into after in mould, take out when nodularization aluminium alloy temperature is down to 960 DEG C, obtain high-toughness wear-resistant ball idiosome, wherein teeming temperature is 1380 DEG C;
S4, quenching: high-toughness wear-resistant ball idiosome is carried out oil quenching, take out when high-toughness wear-resistant ball idiosome temperature is down to 290 DEG C, then putting into temperature is after the constant-temperature oven of 340 DEG C carries out insulation 45min, and take out air cooling and obtain high-toughness wear-resistant ball, the heating medium wherein in constant-temperature oven is the KNO of 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 cupola furnace and carry out melting, cupola furnace temperature is risen to 1430 DEG C, insulation 16min, after adding magnesium ingot, zirconium ingot and titanium ingot again, temperature is risen to 1490 DEG C, insulation 12min, after being pulled out by the slag floating over aluminium alloy surface, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: add nodulizing agent, nucleating agent and ferrosilicon in aluminium alloy A after, temperature is maintained 1490 DEG C, insulation 5.6min obtains nodularization aluminium alloy;
S3, cast: nodularization aluminium alloy is poured into after in mould, take out when nodularization aluminium alloy temperature is down to 970 DEG C, obtain high-toughness wear-resistant ball idiosome, wherein teeming temperature is 1380 DEG C;
S4, quenching: high-toughness wear-resistant ball idiosome is carried out oil quenching, take out when high-toughness wear-resistant ball idiosome temperature is down to 292 DEG C, then putting into temperature is after the constant-temperature oven of 337 DEG C carries out insulation 49min, and take out air cooling and obtain high-toughness wear-resistant ball, the heating medium in constant-temperature oven is the KNO of melting
3, NaNO
3, NaNO
2mixture, KNO
3, NaNO
3, NaNO
2weight ratio be 24:52:24.
The 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 (3)
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 cupola furnace and carry out melting, cupola furnace temperature is risen to 1400-1450 DEG C, insulation 15-20min, after adding magnesium ingot, zirconium ingot and titanium ingot again, temperature is risen to 1460-1500 DEG C, insulation 10-15min, after being pulled out by the slag floating over aluminium alloy surface, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: add nodulizing agent, nucleating agent and ferrosilicon in aluminium alloy A after, temperature is maintained 1460-1500 DEG C, insulation 5-7min obtains nodularization aluminium alloy;
S3, cast: nodularization aluminium alloy is poured into after in mould, take out when nodularization aluminium alloy temperature is down to 960-980 DEG C, obtain high-toughness wear-resistant ball idiosome, wherein teeming temperature is 1350-1380 DEG C;
S4, quenching: high-toughness wear-resistant ball idiosome is carried out oil quenching, take out when high-toughness wear-resistant ball idiosome temperature is down to 290-300 DEG C, then putting into temperature is after the constant-temperature oven of 330-340 DEG C carries out insulation 45-55min, take out air cooling and obtain high-toughness wear-resistant ball, the heating medium wherein in constant-temperature oven is the KNO of melting
3, NaNO
3, NaNO
2mixture, KNO
3, NaNO
3, NaNO
2weight ratio be 23-25:52-54:22-24;
Wherein, the weight ratio of C and Si is 4.05-4.15:2.2-2.4.
2. high-toughness wear-resistant ball as claimed in claim 1, it is characterized in that, the weight ratio of Mg, Ti and Zr is 4-5:4.2-4.5:2.3-3.4.
3. high-toughness wear-resistant ball as claimed in claim 1 or 2, it is characterized in that, in the S4 of preparation process, high-toughness wear-resistant ball idiosome is carried out oil quenching, take out when high-toughness wear-resistant ball idiosome temperature is down to 292-296 DEG C, then putting into temperature is after the constant-temperature oven of 334-337 DEG C carries out insulation 49-51min, and take out air cooling and obtain high-toughness wear-resistant ball, the heating medium in constant-temperature oven is the KNO of 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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| CN201410364529.1A CN104087821B (en) | 2014-07-28 | 2014-07-28 | A kind of high-toughness wear-resistant ball |
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| CN104087821B true CN104087821B (en) | 2016-01-20 |
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| 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 |
| CN111286681B (en) * | 2020-02-16 | 2021-05-14 | 北京工业大学 | High-wear-resistance low-cost steel for forging wet grinding balls and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60247037A (en) * | 1984-05-22 | 1985-12-06 | Mitsui Eng & Shipbuild Co Ltd | Cv-cast iron cylinder liner |
| JP2007030037A (en) * | 2005-07-29 | 2007-02-08 | Jfe Steel Kk | Manufacturing method of cast iron article 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 |
| CN103451510A (en) * | 2013-08-21 | 2013-12-18 | 石家庄金刚凯源动力科技有限公司 | Manufacturing 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 |
-
2014
- 2014-07-28 CN CN201410364529.1A patent/CN104087821B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60247037A (en) * | 1984-05-22 | 1985-12-06 | Mitsui Eng & Shipbuild Co Ltd | Cv-cast iron cylinder liner |
| JP2007030037A (en) * | 2005-07-29 | 2007-02-08 | Jfe Steel Kk | Manufacturing method of cast iron article 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 |
| CN103451510A (en) * | 2013-08-21 | 2013-12-18 | 石家庄金刚凯源动力科技有限公司 | Manufacturing 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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