CN103667935A - High-strength high-toughness material for lining plate of mine ball mill - Google Patents
High-strength high-toughness material for lining plate of mine ball mill Download PDFInfo
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Abstract
The invention discloses a high-strength high-toughness material for a lining plate of a mine ball mill, which comprises the following chemical components in percentage by weight: 0.3-0.5% of C, 0.3-1.5% of Si, 0.5-1.5% of Mn, 0.8-4.0% of Cr, less than or equal to 0.1% of S, less than or equal to 0.1% of P, 0.08-1.2% of boron, 0.06-0.8% of titanium, 0.02-0.3% of vanadium, 0.09-0.5% of molybdenum, 0.05-0.2% of bismuth and 0.2-1.5% of grain-refined element. According to the material disclosed by the invention, the impact toughness of the material obtained by smelting, modification treatment and heat treatment exceeds 35-80J, and the tensile strength exceeds 1,000MP; compared with the material in the prior art, the wear resistance is improved by 3 times.
Description
Technical field
The invention belongs to high-abrasive material field, be specifically related to a kind of high-strength and high-ductility material of mining ball grinding liner plate.
Background technology
Ball grinding machine lining board is for protecting cylindrical shell; make cylindrical shell avoid grinding element and directly impact and friction of material; also can utilize multi-form liner plate to adjust the kinestate of grinding element simultaneously; to strengthen the porphyrization of grinding element to material; contribute to improve the mill efficiency of grinding machine; increase output, reduce metal consumption.
The domestic high mangaenese steel of liner plate of ball mill is progressively replaced by Medium Alloy Steel liner plate, but along with the continuous application of Medium Alloy Steel liner plate in ball grinding machine lining board, has progressively substituted manganese steel and other liner plate becomes market development main flow.
Shell liner, except protection cylindrical shell, also has impact to the characteristics of motion of grinding element, and for adapting to the requirement of various different operating states (pulverizing or fine grinding), the material of the shape of liner plate is also different.When take, pulverize when main, require liner plate stronger to the election ability of grinding element, liner plate should have good shock resistance simultaneously, and when take fine grinding when main, liner plate outstanding just smaller, a little less than the election effect of grinding element just, impacts littlely, and grinding is stronger.Require liner plate to there is good wear resisting property.
Although the Medium Alloy Steel of prior art has good shock resistance and toughness, but wear resisting property cannot meet the requirement in market, because wear resisting property is poor, limited to a great extent application, just be intended to the new process of production of superior alloy steel to carry out useful exploration the low-carbon alloy steel of the high-strength and high-ductility that expectation exploitation alloying element content is low.
Summary of the invention
The object of the invention is the just defect of above prior art, a kind of high-strength and high-ductility material of mining ball grinding liner plate is provided.
Object of the present invention can be achieved through the following technical solutions:
A kind of high-strength and high-ductility material for mining ball grinding liner plate, it is characterized in that: the chemical constitution of described material is by weight percentage: C:0.3%～0.5%, Si:0.3%～1.5%, Mn:0.5%～1.5%, Cr:0.8%～4.0%, S :≤0.1%, P :≤0.1%, low melting point becomes nuclear element: 0.3%～3.0%, and grain refining element: 0.2%～1.5%.
The optimum chemical of described material forms: C:0.3%, and Si:0.8%, Mn:1.2%, Cr:0.6%, S:0.06%, P:0.08%, low melting point becomes nuclear element: 0.2%, grain refining element: 0.8%.
Described low melting point becomes nuclear element by boron: 0.08%～1.2%, titanium: 0.06%～0.8%, vanadium: 0.02%～0.3%, molybdenum: 0.09%～0.5%, bismuth: 0.05%～0.2% 5 kind of low melting point metal forms.
Complete processing of the present invention is: during melting, to add rare earth in molten iron and 5 kinds of low melting point metals such as boron, titanium carry out pouring into a mould after pre-treatment at the temperature of 1530 ℃; Then material is heated to 1050 ℃ and quenches, then 650 ℃ are incubated 2 hours, and 750 ℃ are incubated 1.5 hours, and 850 ℃ are incubated 3 hours, then use 380～400 ℃ of tempering, and the time is controlled at 5～6 hours.
Beneficial effect of the present invention is: material impact toughness reaches more than 35～80 joules, more than tensile strength reaches 1000MP; Compare wear resisting property with the material of prior art and improve 3 times.
Embodiment
Embodiment 1
For a high-strength and high-ductility material for mining ball grinding liner plate, the chemical constitution of its material is by weight percentage: C:0.3%, Si:0.8%, Mn:1.2%, Cr:0.6%, S:0.06%, P:0.08%, boron: 0.08%, titanium: 0.06%, vanadium: 0.02%, molybdenum: 0.09%, bismuth: 0.05%, grain refining element: 0.8%.
Complete processing of the present invention is: during melting, to adding low melting point metal in rare earth and boron, titanium etc. 5 in molten iron, carry out at the temperature of 1530 ℃, pouring into a mould after pre-treatment; Then material is heated to 1050 ℃ and quenches, then 650 ℃ are incubated 2 hours, and 750 ℃ are incubated 1.5 hours, and 850 ℃ are incubated 3 hours, then use 380 ℃ of tempering, and the time is controlled at 5 hours.
The material obtaining according to above method, the tested for hardness of the thick test block of process 20mm is HRC45, the impelling strength of 20mm * 20mm * 110mm non-notch sample is 48J/cm
2.
Embodiment 2
For a high-strength and high-ductility material for mining ball grinding liner plate, the chemical constitution of its material is by weight percentage: C:0.5%, Si:1.5%, Mn:1.5%, Cr:4.0%, S:0.08%, P:0.06%, boron: 1.2%, titanium: 0.8%, vanadium: 0.3%, molybdenum: 0.5%, bismuth: 0.2%, grain refining element: 1.5%.
Complete processing of the present invention is: during melting, to adding low melting point metal in rare earth and boron, titanium etc. 5 in molten iron, carry out at the temperature of 1530 ℃, pouring into a mould after pre-treatment; Then material is heated to 1050 ℃ and quenches, then 650 ℃ are incubated 2 hours, and 750 ℃ are incubated 1.5 hours, and 850 ℃ are incubated 3 hours, then use 400 ℃ of tempering, and the time is controlled at 6 hours.
The material obtaining according to above method, the tested for hardness of the thick test block of process 20mm is HRC48, the impelling strength of 20mm * 20mm * 110mm non-notch sample is 65J/cm
2.
Claims (4)
1. the high-strength and high-ductility material for mining ball grinding liner plate, it is characterized in that: described material chemical constitution be by weight percentage: C:0.3%～0.5%, Si:0.3%～1.5%, Mn:0.5%～1.5%, Cr:0.8%～4.0%, S :≤0.1%, P :≤0.1%, low melting point becomes nuclear element: 0.3%～3.0%, and grain refining element: 0.2%～1.5%.
2. a kind of high-strength and high-ductility material for mining ball grinding liner plate according to claim 1, it is characterized in that: the optimum chemical composition of described material is by weight percentage: C:0.3%, Si:0.8%, Mn:1.2%, Cr:0.6%, S:0.06%, P:0.08%, low melting point becomes nuclear element: 0.2%, and grain refining element: 0.8%.
3. a kind of high-strength and high-ductility material for mining ball grinding liner plate according to claim 1 and 2, is characterized in that: described low melting point becomes nuclear element by boron: 0.08%～1.2%, titanium: 0.06%～0.8%, vanadium: 0.02%～0.3%, molybdenum: 0.09%～0.5%, bismuth: 0.05%～0.2% 5 kind of low melting point metal forms.
4. the complete processing of a kind of high-strength and high-ductility material for mining ball grinding liner plate according to claim 1 and 2, it is characterized in that: during melting, to add rare earth in molten iron and 5 kinds of low melting point metals such as boron, titanium carry out pouring into a mould after pre-treatment at the temperature of 1530 ℃; Then material is heated to 1050 ℃ and quenches, then 650 ℃ are incubated 2 hours, and 750 ℃ are incubated 1.5 hours, and 850 ℃ are incubated 3 hours, then use 380～400 ℃ of tempering, and the time is controlled at 5～6 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310581352.6A CN103667935A (en) | 2013-11-19 | 2013-11-19 | High-strength high-toughness material for lining plate of mine ball mill |
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| CN201310581352.6A CN103667935A (en) | 2013-11-19 | 2013-11-19 | High-strength high-toughness material for lining plate of mine ball mill |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981438A (en) * | 2014-05-12 | 2014-08-13 | 安徽省宁国市亚晨碾磨铸件有限责任公司 | Medium-shock loading wear-resistant alloy material |
| CN103981431A (en) * | 2014-05-12 | 2014-08-13 | 安徽省宁国市亚晨碾磨铸件有限责任公司 | Wear-resistant alloy |
| CN103993246A (en) * | 2014-04-23 | 2014-08-20 | 中建材宁国新马耐磨材料有限公司 | Low-alloy ball mill wear resistant lining board and making method thereof |
| CN103993234A (en) * | 2014-04-23 | 2014-08-20 | 中建材宁国新马耐磨材料有限公司 | Medium carbon and chromium alloy steel wear resistant liner and making method thereof |
| CN104099524A (en) * | 2014-07-31 | 2014-10-15 | 宁国市鑫煌矿冶配件制造有限公司 | Liner plate of ball mill for crushing large material |
| CN104152817A (en) * | 2014-07-31 | 2014-11-19 | 宁国市鑫煌矿冶配件制造有限公司 | Lining board for ball mill for crushing bulk materials |
| CN110423943A (en) * | 2019-08-20 | 2019-11-08 | 盐城工学院 | A kind of ultra-fine ball milling liner plate and preparation method thereof |
| CN113755763A (en) * | 2021-07-26 | 2021-12-07 | 安徽瑞泰新材料科技有限公司 | Large-diameter medium-carbon low-alloy wear-resistant steel ball and preparation method thereof |
-
2013
- 2013-11-19 CN CN201310581352.6A patent/CN103667935A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993246A (en) * | 2014-04-23 | 2014-08-20 | 中建材宁国新马耐磨材料有限公司 | Low-alloy ball mill wear resistant lining board and making method thereof |
| CN103993234A (en) * | 2014-04-23 | 2014-08-20 | 中建材宁国新马耐磨材料有限公司 | Medium carbon and chromium alloy steel wear resistant liner and making method thereof |
| CN103993234B (en) * | 2014-04-23 | 2016-01-20 | 中建材宁国新马耐磨材料有限公司 | Chromium alloyed steel abrasion-proof backing block and preparation method thereof in carbon in one |
| CN103993246B (en) * | 2014-04-23 | 2016-07-20 | 中建材宁国新马耐磨材料有限公司 | A kind of low-alloyed ball mill wearing liner plate and preparation method thereof |
| CN103981438A (en) * | 2014-05-12 | 2014-08-13 | 安徽省宁国市亚晨碾磨铸件有限责任公司 | Medium-shock loading wear-resistant alloy material |
| CN103981431A (en) * | 2014-05-12 | 2014-08-13 | 安徽省宁国市亚晨碾磨铸件有限责任公司 | Wear-resistant alloy |
| CN104099524A (en) * | 2014-07-31 | 2014-10-15 | 宁国市鑫煌矿冶配件制造有限公司 | Liner plate of ball mill for crushing large material |
| CN104152817A (en) * | 2014-07-31 | 2014-11-19 | 宁国市鑫煌矿冶配件制造有限公司 | Lining board for ball mill for crushing bulk materials |
| CN110423943A (en) * | 2019-08-20 | 2019-11-08 | 盐城工学院 | A kind of ultra-fine ball milling liner plate and preparation method thereof |
| CN110423943B (en) * | 2019-08-20 | 2020-10-16 | 盐城工学院 | Superfine ball-milling lining plate and preparation method thereof |
| CN113755763A (en) * | 2021-07-26 | 2021-12-07 | 安徽瑞泰新材料科技有限公司 | Large-diameter medium-carbon low-alloy wear-resistant steel ball and preparation method thereof |
| CN113755763B (en) * | 2021-07-26 | 2022-11-04 | 安徽瑞泰新材料科技有限公司 | Large-diameter medium-carbon low-alloy wear-resistant steel ball and preparation method thereof |
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Application publication date: 20140326 |