CN1229145A - Grinding ball for ball mill - Google Patents
Grinding ball for ball mill Download PDFInfo
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- CN1229145A CN1229145A CN 99114053 CN99114053A CN1229145A CN 1229145 A CN1229145 A CN 1229145A CN 99114053 CN99114053 CN 99114053 CN 99114053 A CN99114053 A CN 99114053A CN 1229145 A CN1229145 A CN 1229145A
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- ball
- abrading
- hollow
- cast iron
- ball mill
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Abstract
A grinding ball for ball mill is made up of alloy and spheroidal cast iron through smelting, casting and heat treatment (isothermal quenching). It contains such components as C (3.2-3.8%), Si (2.0-2.8%), Mn (0.5-2.5%), P (less than 0.07%), S (less than 0.03%) and Sn (0.02-0.12%). It features low cost.
Description
The present invention relates to a kind of grinding ball for ball mill.
Ball mill is a machinery essential in thermal power generation, manufacture of cement, the ore dressing, abrading-ball is that ball mill is used to the instrument pulverizing, grind, be that this machine consumption easily consumes part greatly, it has weight, hardness, intensity, toughness multiple technologies index, using spheroidal graphite cast iron or alloy nodular cast iron traditionally is starting material, by thermal treatment process, make bainite or bainite+austenite ductile cast iron.The alloying element that adds, that commonly used is Cu, Mo, Ni.These alloying elements, the price height, domestic resource is few, and smelting equipment is required height, can only use electrosmelting.
Task of the present invention is to propose a kind of grinding ball for ball mill that new alloy nodular cast iron is made of using, and functional, available general smelting equipment is stable, continuous production.
Technical scheme of the present invention is: a kind of grinding ball for ball mill, the material of abrading-ball is an alloy nodular cast iron, alloying element is that tin Sn, manganese Mn constitute Sn-Mn spheroidal graphite cast iron, its content is C:(3.2～3.8) %, Si:(2.0～2.8) %, Mn:(0.5～2.5) %, P:＜0.07%, S:＜0.03%, Sn (0.02～0.12) %.
The manufacture method of Sn-Mn alloy nodular cast iron abrading-ball: combine by smelting technology, casting technique, thermal treatment process, thermal treatment process is an isothermal quenching technique, and the step preface of isothermal quenching is: I. is heated to (840～890) ℃ with as cast condition Sn-Mn alloy nodular cast iron.II. insulation (60～100) minute.III. be taken out to temperature and be isothermal quenching in (250～310) ℃ medium.IV. in this medium temperature, keep (90～120) minute.V. take out naturally cooling.
Technical scheme of the present invention, adopt the Sn-Mn alloy nodular cast iron, wherein the content of manganese Mn can surpass 0.5%, the manganese content that it has overcome in the bainite ductile iron application always can not surpass 0.5% technology prejudice, traditional prejudice is that manganese content surpasses 0.5% and promptly can make the spheroidal graphite cast iron embrittlement, reduces over-all properties.Use the abrading-ball that the technical solution of the present invention available can be good, durable, finish the invention task.
Fig. 1 is a kind of new abrading-ball shape and structure that the present invention proposes.
Be described in detail the present invention below in conjunction with accompanying drawing:
A kind of grinding ball for ball mill, the material of abrading-ball is alloy nodular cast iron, alloying element Be tin Sn, manganese Mn, its content is C:(3.2～3.8) %, Si:(2.0～2.8) %, Mn:(0.5～2.5) %, P:＜0.07%, S:＜0.03%, Sn (0.02～0.12) %.
The manufacture method of this Sn-Mn alloy nodular cast iron grinding ball for ball mill is by the smelter Skill, casting technique, Technology for Heating Processing combine, and isothermal quenching technique is adopted in heat treatment, Isothermal quenching technique is: I. as cast condition Sn-Mn alloy nodular cast iron is heated to (840～890) ℃. II. insulation (60～100) minute. III. be taken out to temperature for (250～310) isothermal hardening in ℃ medium. IV. in this medium temperature, keep (90～120) Minute. V. take out the nature cooling.
Abrading-ball (1) is hollow heavy wall shape structure, its heart section hollow, and hollow space is empty Bulbus cordis shape (2) or hollow class sphere (Fig. 1). The diameter of central part hollow ball is D1, Whole bulb diameter is D2, the ÷ 2 of wall thickness H=(D2-D1) then, and H has relational expression: 25 millis Rice≤H≤45 millimeter. Abrading-ball (1) has the straight hole (3) at perforation center. Also can With the hollow entity ball of right and wrong.
Embodiment 1: make C:3.2%, Si:2.0%, Mn:0.7%, P:0.06%, S:0.02%, the hollow abrading-ball of as cast condition Sn-Mn alloy nodular cast iron of Sn:0.04%, 120 millimeters of diameters, H=45 millimeter with conventional smelting, casting technique.Heat-treat the back with above-mentioned isothermal quenching technique and take out abrading-ball.Medium is a nitrate.
Embodiment 2: make C:3.8%, Si:2.8%, Mn:2.5% with conventional smelting, casting technique, P:0.06%, S:0.02%, the solid abrading-ball of as cast condition Sn-Mn alloy nodular cast iron of Sn:0.10%, 100 millimeters of diameters are heat-treated the back with above-mentioned isothermal quenching technique and are taken out abrading-ball.Medium is a nitrate.
The embodiment abrading-ball is made metallographic, mechanicl test, must the result be: tensile strength sigma
BSo big 1300MPa, impelling strength Ak is greater than 35J/cm
2, hardness HR
CGreater than 48 degree.Metallographic structure is a bainite, and bainite+Yue Shi body meets technical requirements fully.
Use tin, alloying of manganese in the technology of the present invention, both helped the raising of comprehensive mechanical performance, can reduce manufacturing cost again, an amount of tin Sn (0.02%～0.12%), can stablize the perlite of as cast condition abrading-ball strongly, the perlite of as cast condition abrading-ball is stably reached about 60%～80%, thereby can promote the transformation of bainite in the isothermal quenching, to obtain optimized mechanical property.Manganese is very strong to improving the hardening capacity effect, and therefore suitable high-load manganese (0.5%～2.5%) workpiece that helps relatively thick obtains uniform bainite structure.Low temperature austenite in the thermal treatment process and long bainiteization have overcome and contain manganese and can not surpass traditional technology prejudice of 0.5%.
Sn, Mn element can rely on domestic resource fully, and valency is low, and goods is many, reduces cost, and adds hollow ball structure, has reduced resource consumption, further reduces cost again.Because the abrading-ball number of applications is many, present technique can produce the benefit that is difficult to win number for the state and the people.
Claims (5)
1, a kind of grinding ball for ball mill, abrading-ball is an alloy nodular cast iron, it is characterized in that: alloying element is the Sn-Mn alloy nodular cast iron that tin Sn, manganese Mn constitute, its content is C:(3.2～3.8) %, Si:(2.0～2.8) %, Mn:(0.5～2.5) %, P:＜0.07%, S:＜0.03%, Sn (0.02～0.12) %.
2, a kind of manufacture method of grinding ball for ball mill, combine by smelting technology, casting technique, thermal treatment process, it is characterized in that: thermal treatment process is an isothermal quenching technique, and the technology of isothermal quenching is: I. is heated to (840～890) ℃ with as cast condition Sn-Mn alloy nodular cast iron abrading-ball.II. insulation (60～100) minute.III. be taken out to temperature and be isothermal quenching in (250～310) ℃ medium.IV. in this medium temperature, keep (90～120) minute.V. take out naturally cooling.
3, by the described grinding ball for ball mill of claim 1, it is characterized in that: abrading-ball (1) is hollow heavy wall shape structure, its heart portion hollow, and hollow space is hollow ball shape (2) or hollow class sphere.
4, by the described grinding ball for ball mill of claim 3, it is characterized in that: the diameter of central part hollow ball is D1, and whole spherical diameter is D2, the ÷ 2 of wall thickness H=(D2-D1) then, and H has relational expression: 25 millimeters≤H≤45 millimeters.
5, by the described grinding ball for ball mill of claim 3, it is characterized in that: abrading-ball (1) has the straight hole (3) at perforation center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114053 CN1229145A (en) | 1999-02-02 | 1999-02-02 | Grinding ball for ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114053 CN1229145A (en) | 1999-02-02 | 1999-02-02 | Grinding ball for ball mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1229145A true CN1229145A (en) | 1999-09-22 |
Family
ID=5277179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99114053 Pending CN1229145A (en) | 1999-02-02 | 1999-02-02 | Grinding ball for ball mill |
Country Status (1)
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| CN (1) | CN1229145A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346905C (en) * | 2003-03-25 | 2007-11-07 | 克劳迪亚斯·彼得斯技术有限责任公司 | Method for producing hollow grinding bodies and grinding bodies so produced |
| CN101886211A (en) * | 2010-06-30 | 2010-11-17 | 安徽省三方耐磨股份有限公司 | Special grinding ball of titanium dioxide and preparation method thereof |
| CN103320674A (en) * | 2013-07-11 | 2013-09-25 | 朱瑞辉 | Carbide-carrying austempered ductile iron and quenching technology thereof |
| CN103447123A (en) * | 2012-05-28 | 2013-12-18 | 汪福海 | Grinding ball special for wet mill |
| CN114231830A (en) * | 2021-11-05 | 2022-03-25 | 宁国东方碾磨材料股份有限公司 | Nodular cast iron grinding ball and preparation method thereof |
-
1999
- 1999-02-02 CN CN 99114053 patent/CN1229145A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346905C (en) * | 2003-03-25 | 2007-11-07 | 克劳迪亚斯·彼得斯技术有限责任公司 | Method for producing hollow grinding bodies and grinding bodies so produced |
| CN101886211A (en) * | 2010-06-30 | 2010-11-17 | 安徽省三方耐磨股份有限公司 | Special grinding ball of titanium dioxide and preparation method thereof |
| CN101886211B (en) * | 2010-06-30 | 2013-04-24 | 安徽省三方耐磨股份有限公司 | Special grinding ball of titanium dioxide and preparation method thereof |
| CN103447123A (en) * | 2012-05-28 | 2013-12-18 | 汪福海 | Grinding ball special for wet mill |
| CN103320674A (en) * | 2013-07-11 | 2013-09-25 | 朱瑞辉 | Carbide-carrying austempered ductile iron and quenching technology thereof |
| CN114231830A (en) * | 2021-11-05 | 2022-03-25 | 宁国东方碾磨材料股份有限公司 | Nodular cast iron grinding ball and preparation method thereof |
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