CN104152817A - Lining board for ball mill for crushing bulk materials - Google Patents
Lining board for ball mill for crushing bulk materials Download PDFInfo
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- CN104152817A CN104152817A CN201410374395.1A CN201410374395A CN104152817A CN 104152817 A CN104152817 A CN 104152817A CN 201410374395 A CN201410374395 A CN 201410374395A CN 104152817 A CN104152817 A CN 104152817A
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Abstract
The invention discloses a lining board for a ball mill for crushing bulk materials, which comprises the following components in parts by weight: 0.3-0.7% of C, 4-30% of Cr, 0.5-0.8% of Ni, 2-2.4% of Mn, 0.15-0.35% of Mo, 1.5-2% of Ti, 0.15-0.3% of Re, at most 0.009% of P, at most 0.015% of S, and the balance of Fe and inevitable impurities. In the preparation process, low-carbon steel, metallic chromium ingots, manganese ingots, titanium ingots and nickel ingots used as raw materials are subjected to smelting, casting, austenization treatment, tempering treatment, secondary casting, heating, thermal insulation and quenching treatment to obtain the lining board. The lining board has the advantages of high hardness, favorable toughness, high bulk material crushing efficiency and low cost.
Description
Technical field
The present invention relates to abrasion-proof backing block technical field, relate in particular to a kind of lining sheet for ball mill of broken oversize material.
Background technology
Current domestic ball mill target mostly is cement, coal, ore, cinder etc., and liner plate hardness, wear resistance and toughness reguirements when lining sheet for ball mill is used are more and more higher.Because crusher when work, under intense impact effect, oversize material requires to have enough toughness, hardness to liner plate plate body material, and requires crushing efficiency high, and the position that plate body contacts with material also participates in wearing and tearing, and plate body also will have certain wear resistance
Summary of the invention
The lining sheet for ball mill that the present invention proposes a kind of broken oversize material, product hardness is large, good toughness, wear resistance is good, and oversize material crushing efficiency is high, and cost is low.
The lining sheet for ball mill of a kind of broken oversize material that the present invention proposes, comprise by weight: C:0.3-0.7%, Cr:4-30%, Ni:0.5-0.8%, Mn:2-2.4%, Mo:0.15-0.35%, Ti:1.5-2%, Re:0.15-0.3%, P≤0.009%, S≤0.015%, surplus is Fe and inevitable impurity;
In preparation process, prepare the lining sheet for ball mill of described broken oversize material according to following processing step:
S1, first soft steel is melted in medium-frequency induction furnace, be warming up to after 1550-1580 DEG C, add successively again chromium metal ingot, manganese ingot, titanium ingot, nickel ingot to forming melting charge, the pig iron is fused into molten iron and molten iron punching is melted and in melting charge, obtained mould material, be incubated after 4-30 minute and with pouring device, mould material be poured in the first mould and the second mould, cooling forming obtains multiple raised member and premolding liner plate plate body, and the major part of raised member can coordinate clamping with premolding liner plate plate body;
S2, the premolding liner plate plate body after cooling forming and multiple raised member are put into process furnace carry out austenitizing processing, come out of the stove to obtain liner plate blank and raised member blank, austenitizing is processed and is specifically comprised as the next stage: the first stage rises to 400-450 DEG C by normal temperature with the speed of 15-20 DEG C/h, and soaking time is 1-2h; Subordinate phase is warming up to 550-580 DEG C with the speed of 10-20 DEG C/h, and soaking time is 0.5-1h; Phase III is warming up to 650-680 DEG C with the speed of 5-15 DEG C/h, heating-up time 1-2 hour, and soaking time is 1-1.5h; Fourth stage is heated to 900-940 DEG C with the speed of 20-25 DEG C/h, soaking time is 1-5 hour: be that the mass percent concentration of 200-250 DEG C is in 35-45% sodium nitrate solution when being heated to the temperature of quenching rapidly after 950-980 DEG C, hold-time 3-6 hour, then takes out and in air, is cooled to room temperature;
S3, again by temper, tempering temperature 300-500 DEG C, tempering time 8-12 hour, obtains liner plate plate body and multiple protruding block;
S4, protruding block is fixed on board-like skeleton after Shot Blasting, then inserts liner plate plate body, be then preheated to 200-250 DEG C, mould assembling, pours into high manganese steel sheet liquid solution, and teeming temperature is 1500-1540 DEG C;
S5, the material obtaining is packed in heat treatment furnace, first be increased to 450-500 DEG C with the speed of 30-45 DEG C/h, then be warming up to 1300-1550 DEG C with the speed of 50-70 DEG C/h, after insulation 2-2.5h, send into oil quenching bath and carry out quench treatment, cool time is 20-30min, and cool to room temperature obtains the lining sheet for ball mill of broken oversize material.
Preferably, described liner plate comprises by weight: C:0.5-0.6%, Cr:8-9%, Ni:0.7-0.75%, Mn:2.1-2.3%, Mo:0.3-0.34%, Ti:1.6-1.8%, Re:0.2-0.25%, P≤0.009%, S≤0.015%, surplus is Fe and inevitable impurity.
Preferably, described liner plate comprises by weight: C:0.52%, and Cr:8.3%, Ni:0.72%, Mn:2.25%, Mo:0.32%, Ti:1.75%, Re:0.23%, P≤0.009%, S≤0.015%, surplus is Fe and inevitable impurity.
Preferably, in S2, premolding liner plate plate body after cooling forming and multiple raised member are put into process furnace and carry out austenitizing processing, come out of the stove to obtain liner plate blank and raised member blank, austenitizing is processed and is specifically comprised as the next stage: the first stage rises to 420 DEG C by normal temperature with the speed of 18 DEG C/h, and soaking time is 1h; Subordinate phase is warming up to 560 DEG C with the speed of 15 DEG C/h, and soaking time is 0.5h; Phase III is warming up to 670 DEG C with the speed of 12 DEG C/h, and 1.5 hours heating-up times, soaking time is 1.5h; Fourth stage is heated to 920 DEG C with the speed of 24 DEG C/h, and soaking time is 4 hours: the temperature of then quenching is rapidly that the mass percent concentration of 200 DEG C is in 38.5% sodium nitrate solution, 5 hours hold-times, then takes out and in air, is cooled to room temperature.
Preferably, in S3,450 DEG C of tempering temperatures, tempering time 10 hours.
Preferably, in S5, the material obtaining is packed in heat treatment furnace, first be increased to 470 DEG C with the speed of 40 DEG C/h, then be warming up to 1520 DEG C with the speed of 65 DEG C/h, after insulation 2.2h, send into oil quenching bath and carry out quench treatment, the cool time is 20-30min, and cool to room temperature obtains the lining sheet for ball mill of broken oversize material.
In the present invention, there is the liner plate of special shape by adopting certain mode to prepare, crush efficiency to oversize material is high, oversize material is pulverized thoroughly, adopt soft steel, chromium metal ingot, manganese ingot, titanium ingot, nickel ingot is as base material, thermal treatment is undertaken by controlling zone heating mode, and rationally control heat-up rate and the soaking time of each heating phase, glassy phase increases, product hardness is large, proportion is high, send in sodium nitrate solution and quench, and rationally control the concentration of SODIUMNITRATE, utilize the high specific heat capacity of sodium nitrate solution to carry out fast cooling, make austenite change into bainite, increase substantially the toughness of product, and adopt certain mode tempering, the good toughness of liner plate, hardness and wear resisting property significantly improve, product strength increases greatly, wear resistance is good, frictional dissipation between inner liner of bowl mill plate and abrading-ball is low, in the present invention, product hardness is large, good toughness, oversize material crushing efficiency is high, cost is low.
Embodiment
Embodiment 1
A lining sheet for ball mill for broken oversize material, described liner plate comprises by weight: C:0.35%, Cr:9%, Ni:0.52%, Mn:2.3%, Mo:0.17%, Ti:2%, Re:0.16%, P≤0.009%, S≤0.015%, surplus is Fe and inevitable impurity;
In preparation process, prepare the lining sheet for ball mill of described broken oversize material according to following processing step:
S1, first soft steel is melted in medium-frequency induction furnace, be warming up to after 1550 DEG C, add successively again chromium metal ingot, manganese ingot, titanium ingot, nickel ingot to forming melting charge, the pig iron is fused into molten iron and molten iron punching is melted and in melting charge, obtained mould material, be incubated after 8 minutes and with pouring device, mould material be poured in the first mould and the second mould, cooling forming obtains multiple raised member and premolding liner plate plate body, and the major part of raised member can coordinate clamping with premolding liner plate plate body;
S2, the premolding liner plate plate body after cooling forming and multiple raised member are put into process furnace carry out austenitizing processing, come out of the stove to obtain liner plate blank and raised member blank, austenitizing is processed and is specifically comprised as the next stage: the first stage rises to 445 DEG C by normal temperature with the speed of 15 DEG C/h, and soaking time is 1h; Subordinate phase is warming up to 555 DEG C with the speed of 19 DEG C/h, and soaking time is 1h; Phase III is warming up to 678 DEG C with the speed of 6 DEG C/h, and 1.5 hours heating-up times, soaking time is 1.5h; Fourth stage is heated to 935 DEG C with the speed of 20 DEG C/h, soaking time is 1 hour: be that the mass percent concentration of 205 DEG C is in 44.5% sodium nitrate solution when being heated to the temperature of quenching rapidly after 970 DEG C, 3 hours hold-times, then take out and in air, be cooled to room temperature;
S3, again by temper, 485 DEG C of tempering temperatures, tempering time 8 hours, obtains liner plate plate body and multiple protruding block;
S4, protruding block is fixed on board-like skeleton after Shot Blasting, then inserts liner plate plate body, be then preheated to 245 DEG C, mould assembling, pours into high manganese steel sheet liquid solution, and teeming temperature is 1500 DEG C;
S5, the material obtaining is packed in heat treatment furnace, first be increased to 450 DEG C with the speed of 42 DEG C/h, then be warming up to 1305 DEG C with the speed of 65 DEG C/h, after insulation 2.5h, send into oil quenching bath and carry out quench treatment, cool time is 21min, and cool to room temperature obtains the lining sheet for ball mill of broken oversize material.
Embodiment 2
A lining sheet for ball mill for broken oversize material, described liner plate comprises by weight: C:0.68%, Cr:5%, Ni:0.75%, Mn:2%, Mo:0.32%, Ti:1.5%, Re:0.29%, P≤0.009%, S≤0.015%, surplus is Fe and inevitable impurity;
In preparation process, prepare the lining sheet for ball mill of described broken oversize material according to following processing step:
S1, first soft steel is melted in medium-frequency induction furnace, be warming up to after 1570 DEG C, add successively again chromium metal ingot, manganese ingot, titanium ingot, nickel ingot to forming melting charge, the pig iron is fused into molten iron and molten iron punching is melted and in melting charge, obtained mould material, be incubated after 18 minutes and with pouring device, mould material be poured in the first mould and the second mould, cooling forming obtains multiple raised member and premolding liner plate plate body, and the major part of raised member can coordinate clamping with premolding liner plate plate body;
S2, the premolding liner plate plate body after cooling forming and multiple raised member are put into process furnace carry out austenitizing processing, come out of the stove to obtain liner plate blank and raised member blank, austenitizing is processed and is specifically comprised as the next stage: the first stage rises to 400 DEG C by normal temperature with the speed of 20 DEG C/h, and soaking time is 2h; Subordinate phase is warming up to 575 DEG C with the speed of 11 DEG C/h, and soaking time is 0.5h; Phase III is warming up to 655 DEG C with the speed of 14 DEG C/h, and 2 hours heating-up times, soaking time is 1h; Fourth stage is heated to 905 DEG C with the speed of 23 DEG C/h, soaking time is 4.5 hours: be that the mass percent concentration of 245 DEG C is in 35.5% sodium nitrate solution when being heated to the temperature of quenching rapidly after 952 DEG C, 6 hours hold-times, then take out and in air, be cooled to room temperature;
S3, again by temper, 310 DEG C of tempering temperatures, tempering time 11 hours, obtains liner plate plate body and multiple protruding block;
S4, protruding block is fixed on board-like skeleton after Shot Blasting, then inserts liner plate plate body, be then preheated to 210 DEG C, mould assembling, pours into high manganese steel sheet liquid solution, and teeming temperature is 1535 DEG C;
S5, the material obtaining is packed in heat treatment furnace, first be increased to 490 DEG C with the speed of 32 DEG C/h, then be warming up to 1550 DEG C with the speed of 52 DEG C/h, after insulation 2h, send into oil quenching bath and carry out quench treatment, cool time is 28min, and cool to room temperature obtains the lining sheet for ball mill of broken oversize material.
Embodiment 3
A lining sheet for ball mill for broken oversize material, described liner plate comprises by weight: C:0.52%, Cr:8.3%, Ni:0.72%, Mn:2.25%, Mo:0.32%, Ti:1.75%, Re:0.23%, P≤0.009%, S≤0.015%, surplus is Fe and inevitable impurity;
In preparation process, prepare the lining sheet for ball mill of described broken oversize material according to following processing step:
S1, first soft steel is melted in medium-frequency induction furnace, be warming up to after 1570 DEG C, add successively again chromium metal ingot, manganese ingot, titanium ingot, nickel ingot to forming melting charge, the pig iron is fused into molten iron and molten iron punching is melted and in melting charge, obtained mould material, be incubated after 24 minutes and with pouring device, mould material be poured in the first mould and the second mould, cooling forming obtains multiple raised member and premolding liner plate plate body, and the major part of raised member can coordinate clamping with premolding liner plate plate body;
S2, the premolding liner plate plate body after cooling forming and multiple raised member are put into process furnace carry out austenitizing processing, come out of the stove to obtain liner plate blank and raised member blank, austenitizing is processed and is specifically comprised as the next stage: the first stage rises to 420 DEG C by normal temperature with the speed of 18 DEG C/h, and soaking time is 1h; Subordinate phase is warming up to 560 DEG C with the speed of 15 DEG C/h, and soaking time is 0.5h; Phase III is warming up to 670 DEG C with the speed of 12 DEG C/h, and 1.5 hours heating-up times, soaking time is 1.5h; Fourth stage is heated to 920 DEG C with the speed of 24 DEG C/h, and soaking time is 4 hours: the temperature of then quenching is rapidly that the mass percent concentration of 200 DEG C is in 38.5% sodium nitrate solution, 5 hours hold-times, then takes out and in air, is cooled to room temperature;
S3, again by temper, 450 DEG C of tempering temperatures, tempering time 10 hours, obtains liner plate plate body and multiple protruding block;
S4, protruding block is fixed on board-like skeleton after Shot Blasting, then inserts liner plate plate body, be then preheated to 240 DEG C, mould assembling, pours into high manganese steel sheet liquid solution, and teeming temperature is 1520 DEG C;
S5, the material obtaining is packed in heat treatment furnace, first be increased to 470 DEG C with the speed of 40 DEG C/h, then be warming up to 1520 DEG C with the speed of 65 DEG C/h, after insulation 2.2h, send into oil quenching bath and carry out quench treatment, cool time is 28min, and cool to room temperature obtains the lining sheet for ball mill of broken oversize material.
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. the lining sheet for ball mill of a broken oversize material, it is characterized in that, comprise by weight: C:0.3-0.7%, Cr:4-30%, Ni:0.5-0.8%, Mn:2-2.4%, Mo:0.15-0.35%, Ti:1.5-2%, Re:0.15-0.3%, P≤0.009%, S≤0.015%, surplus is Fe and inevitable impurity;
In preparation process, prepare the lining sheet for ball mill of described broken oversize material according to following processing step:
S1, first soft steel is melted in medium-frequency induction furnace, be warming up to after 1550-1580 DEG C, add successively again chromium metal ingot, manganese ingot, titanium ingot, nickel ingot to forming melting charge, the pig iron is fused into molten iron and molten iron punching is melted and in melting charge, obtained mould material, be incubated after 4-30 minute and with pouring device, mould material be poured in the first mould and the second mould, cooling forming obtains multiple raised member and premolding liner plate plate body, and the major part of raised member can coordinate clamping with premolding liner plate plate body;
S2, the premolding liner plate plate body after cooling forming and multiple raised member are put into process furnace carry out austenitizing processing, come out of the stove to obtain liner plate blank and raised member blank, austenitizing is processed and is specifically comprised as the next stage: the first stage rises to 400-450 DEG C by normal temperature with the speed of 15-20 DEG C/h, and soaking time is 1-2h; Subordinate phase is warming up to 550-580 DEG C with the speed of 10-20 DEG C/h, and soaking time is 0.5-1h; Phase III is warming up to 650-680 DEG C with the speed of 5-15 DEG C/h, heating-up time 1-2 hour, and soaking time is 1-1.5h; Fourth stage is heated to 900-940 DEG C with the speed of 20-25 DEG C/h, soaking time is 1-5 hour: be that the mass percent concentration of 200-250 DEG C is in 35-45% sodium nitrate solution when being heated to the temperature of quenching rapidly after 950-980 DEG C, hold-time 3-6 hour, then takes out and in air, is cooled to room temperature;
S3, again by temper, tempering temperature 300-500 DEG C, tempering time 8-12 hour, obtains liner plate plate body and multiple protruding block;
S4, protruding block is fixed on board-like skeleton after Shot Blasting, then inserts liner plate plate body, be then preheated to 200-250 DEG C, mould assembling, pours into high manganese steel sheet liquid solution, and teeming temperature is 1500-1540 DEG C;
S5, the material obtaining is packed in heat treatment furnace, first be increased to 450-500 DEG C with the speed of 30-45 DEG C/h, then be warming up to 1300-1550 DEG C with the speed of 50-70 DEG C/h, after insulation 2-2.5h, send into oil quenching bath and carry out quench treatment, cool time is 20-30min, and cool to room temperature obtains the lining sheet for ball mill of broken oversize material.
2. the lining sheet for ball mill of broken oversize material according to claim 1, it is characterized in that, described lining sheet for ball mill comprises by weight: C:0.5-0.6%, Cr:8-9%, Ni:0.7-0.75%, Mn:2.1-2.3%, Mo:0.3-0.34%, Ti:1.6-1.8%, Re:0.2-0.25%, P≤0.009%, S≤0.015%, surplus is Fe and inevitable impurity.
3. according to the lining sheet for ball mill of broken oversize material described in claim 1 or 2, it is characterized in that, described lining sheet for ball mill comprises by weight: C:0.52%, Cr:8.3%, Ni:0.72%, Mn:2.25%, Mo:0.32%, Ti:1.75%, Re:0.23%, P≤0.009%, S≤0.015%, surplus is Fe and inevitable impurity.
4. according to the lining sheet for ball mill of broken oversize material described in claim 1-3 any one, it is characterized in that, in S2, premolding liner plate plate body after cooling forming and multiple raised member are put into process furnace and carry out austenitizing processing, come out of the stove to obtain liner plate blank and raised member blank, austenitizing is processed and is specifically comprised as the next stage: the first stage rises to 420 DEG C by normal temperature with the speed of 18 DEG C/h, and soaking time is 1h; Subordinate phase is warming up to 560 DEG C with the speed of 15 DEG C/h, and soaking time is 0.5h; Phase III is warming up to 670 DEG C with the speed of 12 DEG C/h, and 1.5 hours heating-up times, soaking time is 1.5h; Fourth stage is heated to 920 DEG C with the speed of 24 DEG C/h, and soaking time is 4 hours: the temperature of then quenching is rapidly that the mass percent concentration of 200 DEG C is in 38.5% sodium nitrate solution, 5 hours hold-times, then takes out and in air, is cooled to room temperature.
5. according to the lining sheet for ball mill of broken oversize material described in claim 1-4 any one, it is characterized in that, in S3,450 DEG C of tempering temperatures, tempering time 10 hours.
6. according to the lining sheet for ball mill of broken oversize material described in claim 1-5 any one, it is characterized in that, in S5, the material obtaining is packed in heat treatment furnace, first be increased to 470 DEG C with the speed of 40 DEG C/h, then be warming up to 1520 DEG C with the speed of 65 DEG C/h, after insulation 2.2h, send into oil quenching bath and carry out quench treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410374395.1A CN104152817A (en) | 2014-07-31 | 2014-07-31 | Lining board for ball mill for crushing bulk materials |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410374395.1A CN104152817A (en) | 2014-07-31 | 2014-07-31 | Lining board for ball mill for crushing bulk materials |
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| CN104152817A true CN104152817A (en) | 2014-11-19 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090142218A1 (en) * | 2007-11-29 | 2009-06-04 | Ati Properties, Inc. | Lean austenitic stainless steel |
| CN101570835A (en) * | 2009-04-24 | 2009-11-04 | 中煤第三建设（集团）有限责任公司三十工程处 | Abrasion-resistant material for feed delivery substrate of mine |
| CN102418046A (en) * | 2011-08-22 | 2012-04-18 | 宁国市东方碾磨材料有限责任公司 | Novel multi-component alloy groove lining plate |
| CN103627959A (en) * | 2013-11-20 | 2014-03-12 | 滁州学院 | Heat-resistant alloy steel liner plate material and preparation method thereof |
| CN103667935A (en) * | 2013-11-19 | 2014-03-26 | 安徽省宁国市华达耐磨材料有限公司 | High-strength high-toughness material for lining plate of mine ball mill |
-
2014
- 2014-07-31 CN CN201410374395.1A patent/CN104152817A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090142218A1 (en) * | 2007-11-29 | 2009-06-04 | Ati Properties, Inc. | Lean austenitic stainless steel |
| CN101570835A (en) * | 2009-04-24 | 2009-11-04 | 中煤第三建设（集团）有限责任公司三十工程处 | Abrasion-resistant material for feed delivery substrate of mine |
| CN102418046A (en) * | 2011-08-22 | 2012-04-18 | 宁国市东方碾磨材料有限责任公司 | Novel multi-component alloy groove lining plate |
| CN103667935A (en) * | 2013-11-19 | 2014-03-26 | 安徽省宁国市华达耐磨材料有限公司 | High-strength high-toughness material for lining plate of mine ball mill |
| CN103627959A (en) * | 2013-11-20 | 2014-03-12 | 滁州学院 | Heat-resistant alloy steel liner plate material and preparation method thereof |
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Effective date of abandoning: 20170531 |