CN100489140C - Vertical grinding hollow abrading-resistant ball chemical composition control and thermal treatment process - Google Patents
Vertical grinding hollow abrading-resistant ball chemical composition control and thermal treatment process Download PDFInfo
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- CN100489140C CN100489140C CNB2006101069654A CN200610106965A CN100489140C CN 100489140 C CN100489140 C CN 100489140C CN B2006101069654 A CNB2006101069654 A CN B2006101069654A CN 200610106965 A CN200610106965 A CN 200610106965A CN 100489140 C CN100489140 C CN 100489140C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The wear resistant hollow mill ball for vertical mill has optimized chemical composition of ultra high manganese wear resistant steel comprising C, Mn, Si, Cr, Mo, Ti, S and P, and is produced through smelting, casting and proper heat treatment. It has tensile strength of sigma-b higher than 830 MPa, sigma-s higher than 460 MPa, and alpha-k higher than 70 J/ sq cm. The wear resistant hollow mill ball in high quality is applied in vertical mill.
Description
Affiliated technical field:
The present invention relates to a kind of hollow wear-resisting nodularization Composition Control, melting technology and thermal treatment process, especially vertical mill grinding machine uses hollow wear-resisting nodularization Composition Control and thermal treatment process.
Background technology:
Vertical mill is because its energy consumption is low, operate steadily, noise is low, and characteristics such as reliability height have reached widely in the raw material of cement industry and coal dust production and used. and the abrasive dust process of vertical mill is to form by the relative movement of hollow wear-resisting ball and mill. and hollow wear-resisting ball is the key part of vertical mill.The footpath of hollow wear-resisting ball is about 1m, and wall thickness is 100mm, and weight is about 1000 kilograms. foundry engieering requires high, at present, domestic is not the heat-treatment quenching cracking when producing hollow wear-resisting ball, and the wear resisting property that is exactly the hollow wear-resisting ball of producing is low, can not normally use, in case abrading-ball wearing and tearing must be from external order. 250,000 yuan of the prices of import abrading-ball/each, the price height, order goods, the delivery cycle is long, brought very big difficulty to enterprise.From 2003, we work out the chemical ingredients and the casting technique of hollow wear-resisting ball, produce intensity height, good toughness, good heat resistance, wear resistance height, be applicable to the wear-resisting hollow ball of fine coal and cement industry, for many enterprises have solved technical barrier. retrieval China application (patent) number: 85105683 applyings date: 1985.07.19 open (bulletin) number: CN85105683 open (bulletin) day: 1987.01.21
Application (patent) number: 89108897.0 applyings date: 1989.00.23
Open (bulletin) number: CN 1042193 open (bulletin) day: 1990.05.16
Application (patent) number: 92108118.9 applyings date: 1992.04.27
Open (bulletin) number: CN 1078265 open (bulletin) day: 1993.11.10
Application (patent) number: 03112462.3 applying date: 2003.07.01
Open (bulletin) number: CN 1483840 open (bulletin) day: 2004.03.24
Application (patent) number: 03135644.3 applying date: 2003.08.20
Open (bulletin) number: CN1584061 open (bulletin) day: 2005.02.23
Summary of the invention:
In order effectively to improve the wear resisting property of the wear-resisting ball of vertical grinding hollow, the invention provides that the wear-resisting nodularization of a kind of vertical grinding hollow becomes to be grouped into, melting technology and thermal treatment process, this invention is in thermal balance, soaking time, the tapping temperature of control associated alloys composition, smelting temperature, thermal treatment rate of heating, Heating temperature, foundry goods, goes into water temp and leaving water temperature(LWT) reaches the purpose that improves performance.
Technical scheme:
Carry out melting, casting by the chemical ingredients of optimizing C, Mn, Si, Cr, Mo, Ti, S, P superelevation manganese wear-resistant steel, foundry goods is carried out suitable thermal treatment, the tensile strength of hollow wear-resisting ball reaches σ b greater than 830Mpa, and σ s is greater than 460Mpa, and ak is greater than 70J/cm
2
Embodiment:
According to chemical composition (quality %) is C:1.3～1.5, Mn:17～19, Si:0.6～0.8, Cr:1.8～2.2, Mo:0.8～1.1, Ti:0.10～0.15, S :≤0.03, P≤0.05, all the other carry out melting, casting for the proportioning of Fe.Adopt electric arc furnace fusing molten steel, melt down high mangaenese steel and low-carbon waste steel batching, ferrochrome, molybdenum-iron calculates wherein with furnace charge and adds in the stove by desired content behind the chemical composition content, when temperature reaches 1650-1700 ℃, calculate and determine to press behind the chemical composition content in ferromanganese and the ferrotianium in the desired content adding stove, the aluminium final deoxygenation of adding 0.08% before the tapping, temperature is a 1440-1460 ℃ of pouring cast part. adopts during thermal treatment wear-resisting ball to be heated to 600 ℃ less than 50 ℃/speed at one hour rating, be incubated 10 hours, be heated to 1100 ℃ with stove again, soaking time: the every 25mm insulation of casting thickness 1 hour. fast wear-resisting ball is taken out from process furnace subsequently, put into water temperature less than in 30 ℃ the water, wear-resisting ball from time of the entry of coming out of the stove less than 1 minute, the water yield is 10 times of casting weight, after the quenching, water temperature is less than 50 ℃, and simultaneously, the pond is blown into compressed-air actuated technology and heat-treats, the tensile strength of wear-resisting ball reaches 830MPa, and impelling strength reaches 70J/cm
2.
Beneficial effect:
Beneficial effect of the present invention is, the wear-resisting ball of the vertical grinding hollow of being developed is widely used in the raw material and coal dust production of cement industry. and the relative movement of satisfying vertical wear-resisting ball of mill abrasive dust process hollow core and mill requires, reaches the mill ball quality of Germany's production, the high-quality abrading-ball with high wear resistance, substituting import one.
Embodiment one:
(quality according to chemical composition, %) be C:13～1.5, Mn:17～19, Si:0.6～0.8, Cr:1.8～2.2, Mo:0.8～1.1, Ti:0.10～0.15, S :≤0.03, P≤0.05, all the other carry out melting for the proportioning of Fe, casting. adopt electric arc furnace fusing molten steel, melt down high mangaenese steel and low-carbon waste steel batching, ferrochrome, molybdenum-iron calculates wherein with furnace charge and adds in the stove by desired content behind the chemical composition content, when temperature reaches 1650-1700 ℃, calculate and press behind the chemical composition content in ferromanganese and the ferrotianium in the desired content adding stove, the aluminium final deoxygenation of adding 0.08% before the tapping, temperature is a 1440-1460 ℃ of pouring cast part.
Embodiment two:
Adopt during thermal treatment and wear-resisting ball is heated to 600 ℃, be incubated 10 hours, be heated to 1100 ℃ with stove again, soaking time: the every 25mm insulation of casting thickness 1 hour less than 50 ℃/speed at one hour rating.Fast wear-resisting ball is taken out from process furnace subsequently, put into water temperature less than in 30 ℃ the water, wear-resisting ball from time of the entry of coming out of the stove less than 1 minute, the water yield is 10 times of casting weight, and after the quenching, water temperature is less than 50 ℃, simultaneously, the pond is blown into compressed-air actuated technology and heat-treats, and the tensile strength of wear-resisting ball reaches 830MPa, and impelling strength reaches 70J/cm
2
Embodiment:
(quality according to chemical composition, %) be C:1.3～1.5, Mn:17～19, Si:0.6～0.8, Cr:1.8～2.2, Mo:0.8～1.1, Ti:0.10～0.15, S :≤0.03, P≤0.05, all the other carry out melting for the proportioning of Fe, casting. adopt electric arc furnace fusing molten steel, melt down high mangaenese steel and low-carbon waste steel batching, ferrochrome, molybdenum-iron calculates wherein behind the chemical composition content to add in the stove by desired content with furnace charge and adds, when temperature reaches 1650-1700 ℃, calculate and determine to press behind the chemical composition content in ferromanganese and the ferrotianium in the desired content adding stove, the aluminium final deoxygenation of adding 0.08% before the tapping, temperature is a 1440-1460 ℃ of pouring cast part. adopts during thermal treatment wear-resisting ball to be heated to 600 ℃ less than 50 ℃/speed at one hour rating, be incubated 10 hours, be heated to 1100 ℃ with stove again, soaking time: the every 25mm insulation of casting thickness 1 hour. fast wear-resisting ball is taken out from process furnace subsequently, put into water temperature less than in 30 ℃ the water, wear-resisting ball from time of the entry of coming out of the stove less than 1 minute, the water yield is 10 times of casting weight, after the quenching, water temperature is less than 50 ℃, simultaneously, the pond is blown into compressed-air actuated technology and heat-treats, the tensile strength of wear-resisting ball reaches 830MPa, and impelling strength reaches 70J/cm
2
Claims (1)
1, wear-resisting nodularization Composition Control of a kind of vertical grinding hollow and thermal treatment process is characterized in that: chemical ingredients (quality %) is C:1.3～1.5, Mn:17～19, Si:0.6～0.8, Cr:1.8～2.2, Mo:0.8～1.1, Ti:0.10～0.15, S :≤0.03, P≤0.05, all the other control for the proportioning of Fe; Adopt electric arc furnace fusing molten steel, melt down high mangaenese steel and low-carbon waste steel batching, ferrochrome, molybdenum-iron calculate wherein with furnace charge and add in the stove by desired content behind the chemical composition content, when temperature reaches 1650-1700 ℃, calculate and press behind the chemical composition content in ferromanganese and the ferrotianium in the desired content adding stove, add the aluminium final deoxygenation of (quality %) 0.08% before the tapping, temperature is a 1440-1460 ℃ of pouring cast part; Adopt during thermal treatment and foundry goods is heated to 600 ℃, be incubated 10 hours, be heated to 1100 ℃ with stove again, be incubated 4 hours less than 50 ℃/speed at one hour rating; Fast foundry goods is taken out from process furnace subsequently, puts into water temperature less than in 30 ℃ the water, foundry goods from time of the entry of coming out of the stove less than 1 minute, the water yield is 10 times of casting weight, after the quenching, water temperature is less than 50 ℃, blowing compressed air is wanted in the pond simultaneously; Can obtain mechanical property σ b greater than 830Mpa, σ s is greater than 460Mpa, and ak is greater than the hollow wear-resisting ball of 70J/cm2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101069654A CN100489140C (en) | 2006-09-01 | 2006-09-01 | Vertical grinding hollow abrading-resistant ball chemical composition control and thermal treatment process |
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| CNB2006101069654A CN100489140C (en) | 2006-09-01 | 2006-09-01 | Vertical grinding hollow abrading-resistant ball chemical composition control and thermal treatment process |
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| CN100489140C true CN100489140C (en) | 2009-05-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10227681B2 (en) | 2015-10-21 | 2019-03-12 | Caterpillar Inc. | High manganese steel with enhanced wear and impact characteristics |
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| CN102399533A (en) * | 2011-09-26 | 2012-04-04 | 宁国市东方碾磨材料有限责任公司 | Wear-resistant and corrosion-resistant nano-abrasive material and preparation method thereof |
| CN102534404B (en) * | 2011-12-07 | 2014-01-22 | 铜陵安东铸钢有限责任公司 | Super-high manganese steel and manufacturing method thereof |
| CN102534405B (en) * | 2011-12-07 | 2014-01-22 | 铜陵安东铸钢有限责任公司 | High manganese steel and preparation method thereof |
| CN102605268B (en) * | 2012-03-20 | 2014-04-23 | 三一重型装备有限公司 | Super-high manganese steel and preparation method thereof |
| CN103056339A (en) * | 2012-12-25 | 2013-04-24 | 江苏联兴成套设备制造有限公司 | Casting technique of cross-beam temperature measuring device of blast furnace |
| CN103639363B (en) * | 2013-12-27 | 2014-08-13 | 马鞍山市海天重工科技发展有限公司 | Preparation method of large abrasion-proof hollow grinding ball |
| CN104120328B (en) * | 2014-07-31 | 2016-08-24 | 宁国市鑫煌矿冶配件制造有限公司 | A kind of preparation technology of ball mill high-performance abrasive body |
| CN104120327B (en) * | 2014-07-31 | 2016-08-24 | 宁国市鑫煌矿冶配件制造有限公司 | A kind of preparation technology of ball mill high-strength wearable abrasive body |
| CN104099612B (en) * | 2014-08-01 | 2016-09-07 | 宁国市宁武耐磨材料有限公司 | The high hard wear-resistant ball of a kind of heat-and corrosion-resistant |
| CN105401094B (en) * | 2015-10-28 | 2017-08-11 | 安徽省三方新材料科技有限公司 | A kind of high manganese high-carbon steel wear-resistant chute lining board |
| CN105331904A (en) * | 2015-11-05 | 2016-02-17 | 宁国市南方耐磨材料有限公司 | Preparation method of high-manganese low-chromium alloy wear-resisting ball |
| CN106636946A (en) * | 2016-11-17 | 2017-05-10 | 马鞍山市银鼎机械制造有限公司 | Preparation method of grinder of high-hardness ball grinding mill |
| CN108531827A (en) * | 2018-07-13 | 2018-09-14 | 宁国市正兴耐磨材料有限公司 | A kind of preparation method of the high manganese wear-resistant ball of high hardness strong toughness |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10227681B2 (en) | 2015-10-21 | 2019-03-12 | Caterpillar Inc. | High manganese steel with enhanced wear and impact characteristics |
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Granted publication date: 20090520 Termination date: 20110901 |