CN101413084A - Silicon-chromium-boron alloy wear resistant ball and manufacturing method thereof - Google Patents
Silicon-chromium-boron alloy wear resistant ball and manufacturing method thereof Download PDFInfo
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- CN101413084A CN101413084A CNA2007101575769A CN200710157576A CN101413084A CN 101413084 A CN101413084 A CN 101413084A CN A2007101575769 A CNA2007101575769 A CN A2007101575769A CN 200710157576 A CN200710157576 A CN 200710157576A CN 101413084 A CN101413084 A CN 101413084A
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Abstract
The invention relates to a silicon-chromium-boron alloy antiwear ball and a production method thereof. The silicon-chromium-boron alloy antiwear ball is characterized by comprising the following chemical compositions: 2.5 to 2.7 percent of C, 1.1 to 1.3 percent of Si, 1.6 to 2.0 percent of Mn, 0.8 to 1.5 percent of Cr, less than or equal to 0.05 percent of P, less than or equal to 0.05 percent of S, 0.0015 to 0.003 percent of B, and the balance being Fe. The method for producing the silicon-chromium-boron alloy antiwear ball comprises the following steps: smelting, shaping, lifting, balling and heat treating. The silicon-chromium-boron alloy antiwear ball produced by the method solves the problem of grinding ball crack, and improves surface quality and wear resistance of a cast ball.
Description
Technical field
The invention belongs to the high-abrasive material technical field, particularly a kind of silicon, chromium, boron alloy wear resistant ball and manufacture method thereof.
Background technology
Bargh all be unable to do without ball mill, and the more too busy to get away abrading-ball of ball mill material.It is at present, domestic that what generally produce to use is abrading-ball composition based on low chrome and high-chromium alloy substantially.The impelling strength of low chrome ball is lower, wear resisting property is general; The high-chromium alloy cost is higher, and corrosion resistance nature is relatively poor, also influences the efficient of abrasive material simultaneously.The disclosed ZL97236808.6 title of Chinese by retrieval utility model patent: multicomponent alloy abrasion-resistant ball, the accessory that belongs to milling equipment, be characterized in that abrading-ball is oval-shaped spheroid, the solid of revolution that its elliptical area obtains for center of turning circle line revolution with the major axis only is and different in shape of abrading-ball in the past.
Summary of the invention
The present invention has overcome the defective of above-mentioned existence, and purpose is relatively poor for solving abrading-ball impelling strength; Problems such as wear-resisting, corrosion resistant performance is not high provide a kind of silicon, chromium, boron alloy wear resistant ball and manufacture method thereof.
A kind of silicon of the present invention, chromium, boron alloy wear resistant ball and manufacture method content Description thereof:
A kind of silicon of the present invention, chromium, boron alloy wear resistant ball and manufacture method thereof is characterized in that: the Chemical Composition of silicon, chromium, boron alloy wear resistant ball: C 2.5～2.7%, Si 1.1～1.3%, Mn 1.6～2.0%, Cr 0.8～1.5%, P≤0.05%, S≤0.05%, B 0.0015～0.003%, surplus are Fe.
Making silicon, chromium, boron alloy wear resistant ball comprises: melting, moulding, lift, play ball and the thermal treatment process step:
Melting:
The stove ratio of going into by the batching requirement weighs up the pig iron, steel and ferromanganese, ferrochrome weight;
(1), charging, fusing: before sending electricity, the closely knit material of packing into earlier adds the abnormity material then, presses electric furnace peak power power supply melting simultaneously, and molten iron is melted fast;
(2), ferrochrome adding method: the pig iron, scrap melting 1/3-1/2 add in the stove;
(3), ferromanganese adding method: the pig iron, scrap melting 1/3-1/2 add in the stove;
(4), be rapidly heated 1450-1480 ℃, sampling is decided carbon stove every day first and is done total analysis, and carbon content is adjusted to specialized range;
(5), temperature reaches 1480-1500 ℃, skims, and adds ferro-boron, the ferro-boron add-on about granularity 5mm, continues to send electric 2-3 minute by 0.25 kilogram of adding of molten iron per ton; Then with coming out of the stove after 0.08% 0.8 kilogram of fine aluminium deoxidation per ton;
(6), the bag endomorphism is handled:
1., before molten iron comes out of the stove, the alterant that mixes evenly is sprinkled in the hand ladle that overbaking is crossed;
2., alterant add-on: every parcel molten iron 100kg adds about 0.7 kilogram of alterant;
Moulding:
(1), adopt metal die and moulding sand mixing moulding, metal die provides basic framework for moulding, molding sand is exclusively used in making rising head and ingate.Rising head and ingate gross weight approximate the weight of 1 ball;
(2), mould is points three kinds: 6 balls of Φ 100 every types, 4 balls of Φ 110 every types, 4 balls of Φ 120 every types;
(3), moulding sand adopts silica sand, requires modest viscosity, is easy to moulding, good permeability, all will carry out mixed grind before each the use;
(4), rising head size: ∮ 65-70 * 85mm; Ingate size: ∮ 28 * 10mm.
Cast:
Burning the notes temperature is: the 1340-1360 degree, and rill waters slowly, and disposable the watering of every type expired.
Lift:
Through 15-20 minutes, carry out lift after the cast, carry out moulding behind the lift again and prepare the next round cast.
Play ball:
Behind the lift, the ball that connects together is broken up, the waste product ball is chosen, qualified ball is framed up prepare to heat-treat.
Thermal treatment: the ball that finishes framing up carries out temper, carries out low-temperaturetempering, and 300～550 ℃, time 25mm/1.5h is incubated and comes out of the stove after 8 hours.
The silicon, chromium, the boron alloy wear resistant ball that adopt the present invention to produce have solved the cracked problem of abrading-ball, have improved the surface quality of casting ball and the wear resistance of casting ball.
Embodiment
Do below a kind of silicon of the present invention, chromium, boron alloy wear resistant ball and manufacture method thereof are achieved in that and specify.
One, Chemical Composition
C 2.5～2.7%, Si 1.1～1.3%, Mn 1.6～2.0%, Cr 0.8～1.5%, P≤0.05%, S≤0.05%, B 0.0015～0.003%, surplus are Fe.
In addition:, also can't fall silicon in the fusion process, so the content of silicon is not done requirement in the production process because the silicon in the pig iron and the steel scrap can't be controlled.In general siliceous is good between 0.8-1.1.
Two, batching
The pig iron, steel scrap and alloy are thrown in standard:
In the molten iron per ton, pig iron 567kg, steel 398kg, manganese 17.5kg, chromium 17.5kg.
Pig iron carbon content is calculated by 3.8%, and Carbon Content Of Steel is calculated by 0.08%, and manganese, chromium carbon content are calculated by 6%.
Three, melting
The stove ratio of going into by the charger sheet requirement weighs up the pig iron, steel scrap and ferromanganese, ferrochrome weight.
1, charging, fusing: before sending electricity, the closely knit material of packing into earlier adds the abnormity material then, presses electric furnace peak power power supply melting simultaneously, and molten iron is melted fast.
2, ferrochrome adding method: the pig iron, scrap melting about 1/3-1/2 add in the stove.
3, ferromanganese adding method: the pig iron, scrap melting about 1/3-1/2 add in the stove.
4, be rapidly heated 1450-1480 ℃, carbon (every day first, stove was done total analysis) is decided in sampling, and carbon content is adjusted to specialized range.
5, temperature reaches 1480-1500 ℃, skims, and adds ferro-boron, and the ferro-boron add-on about granularity 5mm, continues to send electric 2-3 minute by 0.25 kilogram of adding of molten iron per ton; After using 0.08% (0.8 kilogram per ton) fine aluminium deoxidation then, prepare to come out of the stove.
6, the bag endomorphism is handled:
(1) before molten iron is come out of the stove, the alterant that mixes evenly is sprinkled in the hand ladle that overbaking is crossed.
(2) alterant add-on: the about 100kg of every parcel molten iron adds about 0.7 kilogram of alterant.
Four, moulding
1, adopts metal die and moulding sand mixing moulding.Metal die provides basic framework for moulding, and molding sand is exclusively used in makes rising head and ingate.Rising head and ingate gross weight approximate the weight of 1 ball.
2, mould is points three kinds: 6 balls of Φ 100 every types, 4 balls of Φ 110 every types, 4 balls of Φ 120 every types.
3, moulding sand is generally used silica sand, requires modest viscosity, is easy to moulding, good permeability.All to carry out mixed grind before each the use.(having made the old sand+bath of glass+white clay powder=operable moulding sand of type)
4, rising head size: ∮ 65-70 * 85mm; Ingate size: ∮ 28 * 10mm.
Five, cast
Burning the notes temperature is: the 1340-1360 degree, and rill waters slowly, and disposable the watering of every type expired.
Six, lift
Through 15-20 minutes, carry out lift after the cast.Again carry out moulding behind the lift and prepare the next round cast.
Seven, play ball
Behind the lift, the ball that connects together is broken up with sledgehammer, the waste product ball is chosen, qualified ball is framed up prepare to heat-treat by the special messenger.
Eight, thermal treatment
1, the ball that finishes framing up is transported to the thermal treatment center and carries out temper.
2, carry out 280 ℃ or 400 ℃ or 500 ℃ of temper in the heat treatment furnace, be incubated and come out of the stove after 8 hours.Show that through falling sphere machine experiment with respect to other temperature, carry out tempering with 500 ℃, the performance of steel ball improves about 40%.
Claims (8)
1, a kind of silicon, chromium, boron alloy wear resistant ball and manufacture method thereof is characterized in that: the Chemical Composition of silicon, chromium, boron alloy wear resistant ball: C 2.5～2.7%, Si 1.1～1.3%, Mn 1.6～2.0%, Cr 0.8～1.5%, P≤0.05%, S≤0.05%, B 0.0015～0.003%, surplus are Fe.
2, the manufacture method of silicon according to claim 1, chromium, boron alloy wear resistant ball is characterized in that: make silicon, chromium, boron alloy wear resistant ball and comprise: melting, moulding, lift, play ball and the thermal treatment process step.
3, the manufacture method of silicon according to claim 2, chromium, boron alloy wear resistant ball is characterized in that: described melting is:
The stove ratio of going into by the batching requirement weighs up the pig iron, steel and ferromanganese, ferrochrome weight;
(1), charging, fusing: before sending electricity, the closely knit material of packing into earlier adds the abnormity material then, presses electric furnace peak power power supply melting simultaneously, and molten iron is melted fast;
(2), ferrochrome adding method: the pig iron, scrap melting 1/3-1/2 add in the stove;
(3), ferromanganese adding method: the pig iron, scrap melting 1/3-1/2 add in the stove;
(4), be rapidly heated 1450-1480 ℃, sampling is decided carbon stove every day first and is done total analysis, and carbon content is adjusted to specialized range;
(5), temperature reaches 1480-1500 ℃, skims, and adds ferro-boron, the ferro-boron add-on about granularity 5mm, continues to send electric 2-3 minute by 0.25 kilogram of adding of molten iron per ton; Then with coming out of the stove after 0.08% 0.8 kilogram of fine aluminium deoxidation per ton;
(6), the bag endomorphism is handled:
1., before molten iron comes out of the stove, the alterant that mixes evenly is sprinkled in the hand ladle that overbaking is crossed;
2., alterant add-on: every parcel molten iron 100kg adds about 0.7 kilogram of alterant.
4, the manufacture method of silicon according to claim 2, chromium, boron alloy wear resistant ball is characterized in that: described moulding is:
(1), adopt metal die and moulding sand mixing moulding, metal die provides basic framework for moulding, molding sand is exclusively used in making rising head and ingate, rising head and ingate gross weight approximate the weight of 1 ball;
(2), mould is points three kinds: 6 balls of Φ 100 every types, 4 balls of Φ 110 every types, 4 balls of Φ 120 every types;
(3), moulding sand adopts silica sand, requires modest viscosity, is easy to moulding, good permeability, all will carry out mixed grind before each the use;
(4), rising head size: ∮ 65-70 * 85mm; Ingate size: ∮ 28 * 10mm.
5, the manufacture method of silicon according to claim 2, chromium, boron alloy wear resistant ball is characterized in that: described cast is: burning the notes temperature is: the 1340-1360 degree, and rill waters slowly, and disposable the watering of every type expired.
6, the manufacture method of silicon according to claim 2, chromium, boron alloy wear resistant ball is characterized in that: described lift is: through 15-20 minutes, carry out lift after the cast, carry out moulding behind the lift again and prepare the next round cast.
7, the manufacture method of silicon according to claim 2, chromium, boron alloy wear resistant ball is characterized in that: described playing ball is: behind the lift, the ball that connects together is broken up, the waste product ball is chosen, qualified ball is framed up prepare to heat-treat.
8, the manufacture method of silicon according to claim 2, chromium, boron alloy wear resistant ball, it is characterized in that: described thermal treatment is: the ball that finishes framing up carries out temper, carries out low-temperaturetempering, 300～550 ℃, time 25mm/1.5h is incubated and comes out of the stove after 8 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2007101575769A CN101413084B (en) | 2007-10-17 | 2007-10-17 | Silicon-chromium-boron alloy wear resistant ball and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101575769A CN101413084B (en) | 2007-10-17 | 2007-10-17 | Silicon-chromium-boron alloy wear resistant ball and manufacturing method thereof |
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| CN101413084A true CN101413084A (en) | 2009-04-22 |
| CN101413084B CN101413084B (en) | 2010-12-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191425A (en) * | 2011-05-26 | 2011-09-21 | 阳山县联合铸锻有限公司 | Malleable wear-resistant alloy cast iron |
| CN102560226A (en) * | 2012-01-13 | 2012-07-11 | 鞍钢集团矿业公司 | Low-chromium alloy grinding ball modification agent and use method thereof |
| CN104294141A (en) * | 2014-07-16 | 2015-01-21 | 安徽省三方耐磨股份有限公司 | Wear-resistant ball for coal water slurry |
| CN111074146A (en) * | 2019-12-11 | 2020-04-28 | 安徽瑞泰新材料科技有限公司 | Low-chromium cast iron grinding ball for mine and preparation method thereof |
-
2007
- 2007-10-17 CN CN2007101575769A patent/CN101413084B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191425A (en) * | 2011-05-26 | 2011-09-21 | 阳山县联合铸锻有限公司 | Malleable wear-resistant alloy cast iron |
| CN102560226A (en) * | 2012-01-13 | 2012-07-11 | 鞍钢集团矿业公司 | Low-chromium alloy grinding ball modification agent and use method thereof |
| CN102560226B (en) * | 2012-01-13 | 2013-04-17 | 鞍钢集团矿业公司 | Use method of low-chromium alloy grinding ball modification agent |
| CN104294141A (en) * | 2014-07-16 | 2015-01-21 | 安徽省三方耐磨股份有限公司 | Wear-resistant ball for coal water slurry |
| CN111074146A (en) * | 2019-12-11 | 2020-04-28 | 安徽瑞泰新材料科技有限公司 | Low-chromium cast iron grinding ball for mine and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101413084B (en) | 2010-12-29 |
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Address after: 114001 Liaoning City, Anshan province Iron East Road, No. 219, No. 39 Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Liaoning City, Anshan province Iron East Road, No. 219, No. 39 Patentee before: Angang Group Mine Company |