CN104087875A - Process for preparing grinding body used in wear-resistant high-hardness high-toughness ball grinding mill - Google Patents
Process for preparing grinding body used in wear-resistant high-hardness high-toughness ball grinding mill Download PDFInfo
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Abstract
The invention discloses a process for preparing a grinding body used in a wear-resistant high-hardness high-toughness ball grinding mill. The process comprises the following steps: ramming a lining of a smelting furnace with bauxite, introducing into an induction furnace, and then adding pig iron, medium-carbon steel and ferro-molybdenum into the smelting furnace, raising the temperature, adding oven-dried electrolytic manganese, ferrochrome, ferrosilicon, ferroboron and ferroniobium, raising the temperature, adding a deoxidizer and maintaining the temperature to obtain a liner plate base fluid, adding ferrocerium alloy, maintaining the temperature, casting and cooling to obtain a preformed liner plate; then carrying out austenitizing treatment, quenching, tempering, cooling and tapping to obtain a grinding body used in a wear-resistant high-hardness high-toughness ball grinding mill, wherein the preformed liner plate comprises the following components in percentages by weight: 1-1.8% of carbon, 16-18% of chromium, 2.4-2.6% of rare earth elements, 1.3-1.6% of calcium, 1.2-1.3% of manganese, 1.3-1.6% of tungsten, 0.6-0.8% of silicon, 1.5-1.6% of titanium, 0.02-0.05% of sulfur, 0.01-0.03% of phosphorus and the balance of iron and unavoidable impurities.
Description
Technical field
The present invention relates to ball mill grinding element technical field, relate in particular to a kind of preparation technology of wear-resisting high hardness high toughness ball mill grinding element.
Background technology
Ball mill grinding body is ball mill equipment grinding material medium, and by between ball mill grinding body, between grinding element and material, the collision friction between grinding element and liner plate produces ablation, thereby the particle diameter of material is further reduced.In prior art, grinding element target mostly is cement, coal, ore, cinder etc., grinding element hardness and wear resistance is in use one of principal element affecting ball milling shaping effect, the collision occurring between grinding element and abrasive material, grinding element and mill section in process of lapping is inevitable, therefore, also require grinding element to have certain toughness, avoid breaking, this just proposes high-grade requirement to the composition of grinding element.
Summary of the invention
The preparation technology who the present invention proposes a kind of wear-resisting high hardness high toughness ball mill grinding element, cost is low, goods wear resisting property excellence, hardness is high, good toughness, impact toughness and tensile strength are also more excellent.
The preparation technology of a kind of wear-resisting high hardness high toughness ball mill grinding element that the present invention proposes, comprises the steps:
S1, with after alumine knotting melting furnace lining, make oxygen level in induction furnace be less than 2% to passing into argon gas in induction furnace, argon gas flow velocity is 20-35L/min, then in smelting furnace, add the pig iron, medium carbon steel and molybdenum-iron, speed with 50-80 DEG C/h is warming up to 1300-1450 DEG C, continue to add the electrolytic manganese of drying and processing, ferrochrome, ferrosilicon, after ferro-boron and ferro-niobium, speed with 5-10 DEG C/h is warming up to 1500-1530, then obtain liner plate base fluid to adding reductor and be incubated 35-40min in smelting furnace, in insulating process, vacuumizing and maintaining negative pressure is 0.3-0.5kPa, cerium-iron alloy insulation 15-35min will be added in the liner plate base fluid obtaining, then pour in casting mold die cavity and cast, the cooling premolding liner plate that obtains,
Wherein the compositions in weight percentage of premolding sheet material comprises: carbon 1-1.8%, chromium 16-18%, rare earth element 2.4-2.6%, calcium 1.3-1.6%, manganese 1.2-1.3%, tungsten 1.3-1.6%, silicon 0.6-0.8%, titanium 1.5-1.6%, sulphur 0.02-0.05%, phosphorus 0.01-0.03%, surplus is iron and inevitable impurity;
S2, furnace temp is preheated to 200-250 DEG C, then put into premolding liner plate and carry out austenitizing processing, first with the heat-up rate of 20-40 DEG C/h, liner plate foundry goods is heated to 650-700 DEG C, insulation 4-5 hour, then continue to be warming up to 950-1000 DEG C, temperature-rise period is followed tangent Changing Pattern, insulation 3-4.5 hour.
S3, the product that S2 is obtained take out from process furnace to be put into quenching oil medium and quenches, and the temperature of quenching oil is 150-180 DEG C;
S4, the product that S3 is obtained are heated to 250-300 DEG C, are incubated and carry out temper in 4-5 hour, continue to be heated to 220-245 DEG C, are incubated and within 1-3 hour, carry out temper, through cooling, come out of the stove and obtain wear-resisting high hardness high toughness ball mill grinding element.
Preferably, in S1, in smelting furnace, add the pig iron, medium carbon steel and molybdenum-iron, be warming up to 1420 DEG C with the speed of 65 DEG C/h, continue to add after electrolytic manganese, ferrochrome, ferrosilicon, ferro-boron and the ferro-niobium of drying and processing, be warming up to 1520 with the speed of 8 DEG C/h, then obtain liner plate base fluid to adding reductor and be incubated 38min in smelting furnace, in insulating process, vacuumizing and maintaining negative pressure is 0.3kPa, will in the liner plate base fluid obtaining, add cerium-iron alloy insulation 30min.
Preferably, in S1, premolding sheet material is composed of the following components: carbon 1.5%, chromium 17.5%, rare earth element 2.5%, calcium 1.52%, manganese 1.24%, tungsten 1.4%, silicon 0.75%, titanium 1.53%, sulphur 0.045%, phosphorus 0.02%, surplus is iron and inevitable impurity.
Preferably, in S2, furnace temp is preheated to 230 DEG C, then put into premolding liner plate and carry out austenitizing processing, first with the heat-up rate of 35 DEG C/h, liner plate foundry goods is heated to 680 DEG C, is incubated 4.5 hours, then continue to be warming up to 980 DEG C, temperature-rise period is followed tangent Changing Pattern, is incubated 4 hours.
Preferably, in S3, the temperature of quenching oil is 160-165 DEG C.
Preferably, in S3, the product that S3 is obtained is heated to 280-295 DEG C, is incubated and carries out temper in 4-5 hour, continues to be heated to 230-235 DEG C, is incubated and within 1-3 hour, carries out temper, through cooling, come out of the stove and obtains wear-resisting high hardness high toughness ball mill grinding element.
In the present invention, by adding with manganese in medium carbon steel, chromium, silicon is master's alloying element and a small amount of molybdenum, boron, niobium, alloying element, medium carbon steel is carried out to complex intensifying processing, tissue and the hardening capacity of medium carbon steel are improved, adopt rational castmethod simultaneously, give full play to manganese by melting technology process and heat treatment process, chromium, silicon, molybdenum, boron, niobium, the effect of alloying element, content by each component in reasonable control premolding sheet material is in certain scope, toughness and the wear resisting property of grinding element are improved, reach the required over-all properties of large-size ball mill grinding element, the quality of the grinding element finished product making is good, work-ing life significant prolongation.Be main alloy element by the silicon, the manganese that add price cheapness, the addition of chromium is controlled in certain scope, and therefore production cost is low, and castmethod is simple, price and the high mangaenese steel of the grinding element finished product making are suitable, and the present invention has significant economic benefit and social benefit.The rotten processing of ferrocerium rare earth alloy and thermal treatment can be produced carbide network and is divided into bulk; weaken the cut apart effect of carbide to matrix; the continuity of matrix is improved; product impelling strength increases; and there is good wear resisting property; and massive carbide counter stress concentrates shock absorption larger than continuous net-shaped carbide; because the germinating of the fatigue cracking that abrasive material repeated stock is produced and expansion resistance are relatively large; reduce grinding element peeling phenomenon; and the wearing and tearing of grinding element are also played to provide protection, wear resisting property excellence.Send into reduces heat and tempering process in hardening liquid, the good toughness of grinding element, hardness and wear resisting property significantly improve, product strength increases greatly, and can significantly reduce the frictional dissipation between the interior grinding element of ball mill and abrading-ball, and said products wear resisting property excellence, hardness is high, good toughness, impact toughness and tensile strength are also more excellent.
Embodiment
Embodiment 1
A preparation technology for grinding element for wear-resisting high hardness high toughness ball mill, comprises the steps:
S1, with after alumine knotting melting furnace lining, make oxygen level in induction furnace be less than 2% to passing into argon gas in induction furnace, argon gas flow velocity is 30L/min, then in smelting furnace, add the pig iron, medium carbon steel and molybdenum-iron, be warming up to 1420 DEG C with the speed of 65 DEG C/h, continue to add the electrolytic manganese of drying and processing, ferrochrome, ferrosilicon, after ferro-boron and ferro-niobium, speed with 8 DEG C/h is warming up to 1520, then obtain liner plate base fluid to adding reductor and be incubated 38min in smelting furnace, in insulating process, vacuumizing and maintaining negative pressure is 0.3kPa, cerium-iron alloy insulation 30min will be added in the liner plate base fluid obtaining, then pour in casting mold die cavity and cast, the cooling premolding liner plate that obtains, then pour in casting mold die cavity and cast, the cooling premolding liner plate that obtains,
Wherein premolding sheet material is composed of the following components: carbon 1.5%, and chromium 17.5%, rare earth element 2.5%, calcium 1.52%, manganese 1.24%, tungsten 1.4%, silicon 0.75%, titanium 1.53%, sulphur 0.045%, phosphorus 0.02%, surplus is iron and inevitable impurity;
S2, furnace temp is preheated to 230 DEG C, then puts into premolding liner plate and carry out austenitizing processing, first with the heat-up rate of 35 DEG C/h, liner plate foundry goods is heated to 680 DEG C, be incubated 4.5 hours, then continue to be warming up to 980 DEG C, temperature-rise period is followed tangent Changing Pattern, is incubated 4 hours.
S3, the product that S2 is obtained take out from process furnace to be put into quenching oil medium and quenches, and the temperature of quenching oil is 162 DEG C;
S4, the product that S3 is obtained are heated to 285 DEG C, are incubated and carry out temper in 4.5 hours, continue to be heated to 232 DEG C, are incubated and within 1.5 hours, carry out temper, through cooling, come out of the stove and obtain wear-resisting high hardness high toughness ball mill grinding element.
Embodiment 2
A preparation technology for grinding element for wear-resisting high hardness high toughness ball mill, comprises the steps:
S1, with after alumine knotting melting furnace lining, make oxygen level in induction furnace be less than 2% to passing into argon gas in induction furnace, argon gas flow velocity is 20L/min, then in smelting furnace, add the pig iron, medium carbon steel and molybdenum-iron, be warming up to 1300 DEG C with the speed of 80 DEG C/h, continue to add the electrolytic manganese of drying and processing, ferrochrome, ferrosilicon, after ferro-boron and ferro-niobium, speed with 10 DEG C/h is warming up to 1500, then obtain liner plate base fluid to adding reductor and be incubated 35-40min in smelting furnace, in insulating process, vacuumizing and maintaining negative pressure is 0.5kPa, cerium-iron alloy insulation 15min will be added in the liner plate base fluid obtaining, then pour in casting mold die cavity and cast, the cooling premolding liner plate that obtains,
Wherein the compositions in weight percentage of premolding sheet material comprises: carbon 1.8%, and chromium 16%, rare earth element 2.6%, calcium 1.3%, manganese 1.3%, tungsten 1.3%, silicon 0.8%, titanium 1.5%, sulphur 0.05%, phosphorus 0.01%, surplus is iron and inevitable impurity;
S2, furnace temp is preheated to 250 DEG C, then puts into premolding liner plate and carry out austenitizing processing, first with the heat-up rate of 20 DEG C/h, liner plate foundry goods is heated to 700 DEG C, be incubated 4 hours, then continue to be warming up to 1000 DEG C, temperature-rise period is followed tangent Changing Pattern, is incubated 3 hours.
S3, the product that S2 is obtained take out from process furnace to be put into quenching oil medium and quenches, and the temperature of quenching oil is 180 DEG C;
S4, the product that S3 is obtained are heated to 250 DEG C, are incubated and carry out temper in 5 hours, continue to be heated to 220 DEG C, are incubated and within 3 hours, carry out temper, through cooling, come out of the stove and obtain wear-resisting high hardness high toughness ball mill grinding element.
Embodiment 3
A preparation technology for grinding element for wear-resisting high hardness high toughness ball mill, comprises the steps:
S1, with after alumine knotting melting furnace lining, make oxygen level in induction furnace be less than 2% to passing into argon gas in induction furnace, argon gas flow velocity is 35L/min, then in smelting furnace, add the pig iron, medium carbon steel and molybdenum-iron, be warming up to 1450 DEG C with the speed of 50 DEG C/h, continue to add the electrolytic manganese of drying and processing, ferrochrome, ferrosilicon, after ferro-boron and ferro-niobium, speed with 5 DEG C/h is warming up to 1530, then obtain liner plate base fluid to adding reductor and be incubated 35min in smelting furnace, in insulating process, vacuumizing and maintaining negative pressure is 0.5kPa, cerium-iron alloy insulation 15min will be added in the liner plate base fluid obtaining, then pour in casting mold die cavity and cast, the cooling premolding liner plate that obtains,
Wherein the compositions in weight percentage of premolding sheet material comprises: carbon 1.8%, and chromium 16%, rare earth element 2.6%, calcium 1.3%, manganese 1.3%, tungsten 1.3%, silicon 0.8%, titanium 1.5%, sulphur 0.05%, phosphorus 0.01%, surplus is iron and inevitable impurity;
S2, furnace temp is preheated to 250 DEG C, then puts into premolding liner plate and carry out austenitizing processing, first with the heat-up rate of 20 DEG C/h, liner plate foundry goods is heated to 700 DEG C, be incubated 4 hours, then continue to be warming up to 1000 DEG C, temperature-rise period is followed tangent Changing Pattern, is incubated 3 hours.
S3, the product that S2 is obtained take out from process furnace to be put into quenching oil medium and quenches, and the temperature of quenching oil is 180 DEG C;
S4, the product that S3 is obtained are heated to 250 DEG C, are incubated and carry out temper in 5 hours, continue to be heated to 220 DEG C, are incubated and within 3 hours, carry out temper, through cooling, come out of the stove and obtain wear-resisting high hardness high toughness ball mill grinding element.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (6)
1. a preparation technology for grinding element for wear-resisting high hardness high toughness ball mill, is characterized in that, comprises the steps:
S1, with after alumine knotting melting furnace lining, make oxygen level in induction furnace be less than 2% to passing into argon gas in induction furnace, argon gas flow velocity is 20-35L/min, then in smelting furnace, add the pig iron, medium carbon steel and molybdenum-iron, speed with 50-80 DEG C/h is warming up to 1300-1450 DEG C, continue to add the electrolytic manganese of drying and processing, ferrochrome, ferrosilicon, after ferro-boron and ferro-niobium, speed with 5-10 DEG C/h is warming up to 1500-1530, then obtain liner plate base fluid to adding reductor and be incubated 35-40min in smelting furnace, in insulating process, vacuumizing and maintaining negative pressure is 0.3-0.5kPa, cerium-iron alloy insulation 15-35min will be added in the liner plate base fluid obtaining, then pour in casting mold die cavity and cast, the cooling premolding liner plate that obtains,
Wherein the compositions in weight percentage of premolding sheet material comprises: carbon 1-1.8%, chromium 16-18%, rare earth element 2.4-2.6%, calcium 1.3-1.6%, manganese 1.2-1.3%, tungsten 1.3-1.6%, silicon 0.6-0.8%, titanium 1.5-1.6%, sulphur 0.02-0.05%, phosphorus 0.01-0.03%, surplus is iron and inevitable impurity;
S2, furnace temp is preheated to 200-250 DEG C, then put into premolding liner plate and carry out austenitizing processing, first with the heat-up rate of 20-40 DEG C/h, liner plate foundry goods is heated to 650-700 DEG C, insulation 4-5 hour, then continue to be warming up to 950-1000 DEG C, temperature-rise period is followed tangent Changing Pattern, insulation 3-4.5 hour.
S3, the product that S2 is obtained take out from process furnace to be put into quenching oil medium and quenches, and the temperature of quenching oil is 150-180 DEG C;
S4, the product that S3 is obtained are heated to 250-300 DEG C, are incubated and carry out temper in 4-5 hour, continue to be heated to 220-245 DEG C, are incubated and within 1-3 hour, carry out temper, through cooling, come out of the stove and obtain wear-resisting high hardness high toughness ball mill grinding element.
2. the preparation technology of grinding element for wear-resisting high hardness high toughness ball mill according to claim 1, it is characterized in that, in S1, in smelting furnace, add the pig iron, medium carbon steel and molybdenum-iron, be warming up to 1420 DEG C with the speed of 65 DEG C/h, continue to add after electrolytic manganese, ferrochrome, ferrosilicon, ferro-boron and the ferro-niobium of drying and processing, speed with 8 DEG C/h is warming up to 1520, then obtain liner plate base fluid to adding reductor and be incubated 38min in smelting furnace, in insulating process, vacuumizing and maintaining negative pressure is 0.3kPa, will in the liner plate base fluid obtaining, add cerium-iron alloy insulation 30min.
3. the preparation technology of grinding element for wear-resisting high hardness high toughness ball mill according to claim 1 and 2, is characterized in that, in S1, premolding sheet material is composed of the following components: carbon 1.5%, chromium 17.5%, rare earth element 2.5%, calcium 1.52%, manganese 1.24%, tungsten 1.4%, silicon 0.75%, titanium 1.53%, sulphur 0.045%, phosphorus 0.02%, surplus is iron and inevitable impurity.
4. the preparation technology with grinding element according to the wear-resisting high hardness high toughness ball mill described in claim 1-3 any one, it is characterized in that, in S2, furnace temp is preheated to 230 DEG C, then puts into premolding liner plate and carry out austenitizing processing, first with the heat-up rate of 35 DEG C/h, liner plate foundry goods is heated to 680 DEG C, be incubated 4.5 hours, then continue to be warming up to 980 DEG C, temperature-rise period is followed tangent Changing Pattern, is incubated 4 hours.
5. the preparation technology with grinding element according to the wear-resisting high hardness high toughness ball mill described in claim 1-4 any one, is characterized in that, in S3, the temperature of quenching oil is 160-165 DEG C.
6. the preparation technology with grinding element according to the wear-resisting high hardness high toughness ball mill described in claim 1-5 any one, it is characterized in that, in S3, the product that S3 is obtained is heated to 280-295 DEG C, be incubated and carry out temper in 4-5 hour, continue to be heated to 230-235 DEG C, be incubated and within 1-3 hour, carry out temper, through cooling, come out of the stove and obtain wear-resisting high hardness high toughness ball mill grinding element.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1177118A (en) * | 1997-09-12 | 1999-03-23 | Kubota Corp | Combined sleeve for rolling wide-flange shape steel |
| JP2003268508A (en) * | 2002-03-15 | 2003-09-25 | Shin-Hokoku Steel Corp | Corrosion resistant and heat resistant cast steel |
| US20100189588A1 (en) * | 2006-08-09 | 2010-07-29 | Ing Shoji Co., Ltd. | Iron-based corrosion resistant wear resistant alloy and deposit welding material for obtaining the alloy |
| CN102430582A (en) * | 2011-12-29 | 2012-05-02 | 河北津西钢铁集团大方重工科技有限公司 | Roll sleeve of ultra-strong wear-resistant high alloy steel roll squeezer and manufacturing method roll sleeve |
| CN102776448A (en) * | 2012-07-26 | 2012-11-14 | 贵州师范大学 | Alloy grinding ball and production method thereof |
| CN103667865A (en) * | 2013-11-16 | 2014-03-26 | 宁国市开源电力耐磨材料有限公司 | Ultrahigh-wear-resistance high-chromium multi-alloy grinding ball and composite modification processing technique thereof |
-
2014
- 2014-07-31 CN CN201410374432.9A patent/CN104087875A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1177118A (en) * | 1997-09-12 | 1999-03-23 | Kubota Corp | Combined sleeve for rolling wide-flange shape steel |
| JP2003268508A (en) * | 2002-03-15 | 2003-09-25 | Shin-Hokoku Steel Corp | Corrosion resistant and heat resistant cast steel |
| US20100189588A1 (en) * | 2006-08-09 | 2010-07-29 | Ing Shoji Co., Ltd. | Iron-based corrosion resistant wear resistant alloy and deposit welding material for obtaining the alloy |
| CN102430582A (en) * | 2011-12-29 | 2012-05-02 | 河北津西钢铁集团大方重工科技有限公司 | Roll sleeve of ultra-strong wear-resistant high alloy steel roll squeezer and manufacturing method roll sleeve |
| CN102776448A (en) * | 2012-07-26 | 2012-11-14 | 贵州师范大学 | Alloy grinding ball and production method thereof |
| CN103667865A (en) * | 2013-11-16 | 2014-03-26 | 宁国市开源电力耐磨材料有限公司 | Ultrahigh-wear-resistance high-chromium multi-alloy grinding ball and composite modification processing technique thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈华辉: "《耐磨材料应用手册 第2版》", 31 October 2012, article "《耐磨合金钢及其应用》", pages: 149-155 * |
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Application publication date: 20141008 |