CN104087845A - Low alloy liner plate specialized for mine - Google Patents
Low alloy liner plate specialized for mine Download PDFInfo
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- CN104087845A CN104087845A CN201410286455.4A CN201410286455A CN104087845A CN 104087845 A CN104087845 A CN 104087845A CN 201410286455 A CN201410286455 A CN 201410286455A CN 104087845 A CN104087845 A CN 104087845A
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Abstract
The invention relates to the technical field of wear-resistant materials, and discloses a low alloy liner plate specialized for a mine. The low alloy liner plate specialized for mine comprises the following chemical components by weight: 0.38-0.48% of C, 1.30-1.80% of Si, 0.80-1.20% of Mn, 0.20-0.60% of Sc, 1.80-2.20% of Cr, less than or equal to 0.50% of Lu, less than or equal to 0.04% of S, less than or equal to 0.04% of P, and the balance being Fe. The low alloy liner plate contains no noble metals such as molybdenum, nickel and copper, is added with a proper amount of Sc and Lu, improves the strength and wear resistance of the liner plate, increases hardenability of the liner plate, and improves a structure of the liner plate. The low alloy liner plate has good toughness and relatively high hardness, and gets deformation hardening under impact load. Meanwhile, a matching relationship between the hardness and toughness of the liner plate can be controlled in a relatively large scope by adjusting a metallographic structure. A service life of the low alloy liner plate is long; the hardness is moderate; and a production process is simple.
Description
Technical field
The present invention relates to high-abrasive material technical field, refer more particularly to the special-purpose low-alloy liner plate in a kind of mine.
Background technology
Liner plate is the large spare part of replacing amount in ball mill, is also its main consumable accessory, and Year's consumption is very big.It is subject to impact repeatedly, mill stripping effect, the corrosion of ore pulp and the interaction of abrasion and corrosion of steel ball and mineral aggregate when work, and causes the continuous migration of liner plate surfacing material.The work-ing life of liner plate or wear resistance problem are several complexity and a lot of problem of influence factor.Solution route has two aspects: the one, and development of new is applicable to the high-abrasive material of this operating mode; The 2nd, from griding technology aspect, improve the residing abrasion environment of liner plate.In recent years, the liner plate of metal mine widespread use has metal backing (high manganese steel lining plate, alloy lining), magnetic liner plate and rubber liner.
The metal backing material of using is at present mostly high mangaenese steel, the manganese that adds 13% left and right in steel, after the tough processing of this molten steel, can obtain single-phase austenite structure, there is good intensity and toughness, and can work hardening under heavy shock loads effect, it is even higher that it can have HV200 left and right to rise to HV600 left and right in intense impact work hardening rear surface hardness, is applicable to the operating mode with intense impact load.Due in ball mill, abrading-ball is little to the shock action of liner plate, therefore can not make high mangaenese steel produce enough work hardening effects, owing to failing complete work hardening, thereby surface hardness is low, and wear-resisting potential can not fully be brought into play, cause wear liner very fast, the life-span is lower.Because the stubborn intensity of high mangaenese steel is low, in use easily there is viscous deformation in liner plate again, makes repair demolition very difficult.Occurred in recent years adopting antifriction cast iron to manufacture the report of ball grinding machine lining board, because antifriction cast iron fragility is large, liner plate is prone to fracture in using, and affects the safe operation of ball mill.With low alloy steel, manufacture ball grinding machine lining board, have the deficiency that intensity and hardness are low, wear no resistance, wear resistance is only slightly improved than high mangaenese steel.In order to improve obdurability and the wear resistance of steel alloy, conventionally all to add the alloying elements such as molybdenum, nickel, chromium, tungsten, vanadium, day by day in short supply along with alloy resource, molybdenum, nickel, chromium, tungsten, vanadium etc. are becoming tight alloy supply day, price rapidly goes up, and causes common iron and steel high-abrasive material production cost constantly soaring.For extending liner plate work-ing life, improve large-sized grinder operation factor, further improve Business Economic Benefit, research not only wear-resisting but also reliable, cost is low low-alloy lining material probe into development work necessary.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of wear-resisting reliable, and cost is low, the special-purpose low-alloy liner plate in mine that surface hardness is high.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
The special-purpose low-alloy liner plate in mine, is characterized in that, comprises the chemical composition of following weight percent: C0.38-0.48%, Si1.30-1.80%, Mn0.80-1.20%, Sc0.20-0.60%, Cr1.80-2.20%, Lu≤0.50%, S≤0.04%, P≤0.04%, surplus is iron.
Preferably, the special-purpose low-alloy liner plate in described mine comprises the chemical composition of following weight percent: C0.37%, Si1.46%, and Mn0.95%, Sc0.50%, Cr2.10%, Lu0.10%, S0.005%, P0.005%, surplus is iron.
Preferably, the special-purpose low-alloy liner plate in described mine comprises the chemical composition of following weight percent: C0.46%, Si1.65%, and Mn1.00%, Sc0.40%, Cr1.85%, Lu0.25%, S0.02%, P0.02%, surplus is iron.
Preferred, the making method of the special-purpose low-alloy liner plate in described mine comprises the following steps:
(1) adopting steel scrap, alloy, ferronickel, ferromanganese, molybdenum-iron is that raw material is prepared burden according to the proportioning of described low-alloy liner plate;
(2) raw material preparing is inserted to middle frequency furnace and carry out melting, smelting temperature is 1600-1650 ℃;
(3) molten steel melting the being obtained analysis of testing, carries out element secondary proportioning according to assay to molten steel;
(4) alterant is placed in to ladle bottom with iron sheet or masking foil by parcel, to the molten steel processing of going bad, deterroration is 1570-1600 ℃, and the qualified molten steel of element is carried out to thread casting at 1500-1530 ℃ of temperature;
(5), when cast(ing) surface temperature is no more than 600 ℃, cooled low-alloy liner plate is carried out to separation, fine grinding;
(6) the low-alloy liner plate after fine grinding is dropped into process furnace, be warming up to 950-1050 ℃, be incubated 2-3 hours; Then air blast quenching, then 250-300 ℃ of tempering are 2-2.2 hours, take out naturally cooling.
The present invention compared with prior art, have the following advantages: the present invention does not contain the noble metals such as molybdenum, nickel, copper, and cost is low, adds appropriate Sc, Lu, improve intensity and the wear resistance of liner plate, improve the hardening capacity of liner plate, improve liner plate tissue, low-alloy liner plate of the present invention has good toughness, there is again higher hardness, under shock load, obtain strain-hardening, by metallographic structure, adjust simultaneously, can in a big way, control the matching relationship of its Hardness and toughness; Long service life of the present invention, hardness is moderate, and production technique is simple.
Embodiment
Below in conjunction with embodiment, technical scheme of the present invention is further described in detail.
Embodiment mono-:
The special-purpose low-alloy liner plate in mine, comprises the chemical composition of following weight percent: C0.37%, Si1.46%, and Mn0.95%, Sc0.50%, Cr2.10%, Lu0.10%, S0.005%, P0.005%, surplus is iron;
The making method of the special-purpose low-alloy liner plate in described mine comprises the following steps:
(1) adopting steel scrap, alloy, ferronickel, ferromanganese, molybdenum-iron is that raw material is prepared burden according to the proportioning of described low-alloy liner plate;
(2) raw material preparing is inserted to middle frequency furnace and carry out melting, smelting temperature is 1650 ℃;
(3) molten steel melting the being obtained analysis of testing, carries out element secondary proportioning according to assay to molten steel;
(4) alterant is placed in to ladle bottom with iron sheet or masking foil by parcel, to the molten steel processing of going bad, deterroration is 1600 ℃, and the qualified molten steel of element is carried out to thread casting at 1530 ℃ of temperature;
(5), when cast(ing) surface temperature is no more than 600 ℃, cooled low-alloy liner plate is carried out to separation, fine grinding;
(6) the low-alloy liner plate after fine grinding is dropped into process furnace, be warming up to 1050 ℃, be incubated 3 hours; Then air blast quenching, then 2300 ℃ of tempering are 2.2 hours, take out naturally cooling.
Embodiment bis-:
The special-purpose low-alloy liner plate in mine, comprises the chemical composition of following weight percent: C0.46%, Si1.65%, and Mn1.00%, Sc0.40%, Cr1.85%, Lu0.25%, S0.02%, P0.02%, surplus is iron;
The making method of the special-purpose low-alloy liner plate in described mine comprises the following steps:
(1) adopting steel scrap, alloy, ferronickel, ferromanganese, molybdenum-iron is that raw material is prepared burden according to the proportioning of described low-alloy liner plate;
(2) raw material preparing is inserted to middle frequency furnace and carry out melting, smelting temperature is 1600 ℃;
(3) molten steel melting the being obtained analysis of testing, carries out element secondary proportioning according to assay to molten steel;
(4) alterant is placed in to ladle bottom with iron sheet or masking foil by parcel, to the molten steel processing of going bad, deterroration is 1570 ℃, and the qualified molten steel of element is carried out to thread casting at 1500 ℃ of temperature;
(5), when cast(ing) surface temperature is no more than 600 ℃, cooled low-alloy liner plate is carried out to separation, fine grinding;
(6) the low-alloy liner plate after fine grinding is dropped into process furnace, be warming up to 950 ℃, be incubated 2 hours; Then air blast quenching, then 250 ℃ of tempering are 2 hours, take out naturally cooling.
Embodiment tri-:
The special-purpose low-alloy liner plate in mine, comprises the chemical composition of following weight percent: C0.48%, Si1.80%, and Mn1.20%, Sc0.60%, Cr2.20%, Lu0.50%, surplus is iron;
The making method of the special-purpose low-alloy liner plate in described mine comprises the following steps:
(1) adopting steel scrap, alloy, ferronickel, ferromanganese, molybdenum-iron is that raw material is prepared burden according to the proportioning of described low-alloy liner plate;
(2) raw material preparing is inserted to middle frequency furnace and carry out melting, smelting temperature is 1630 ℃;
(3) molten steel melting the being obtained analysis of testing, carries out element secondary proportioning according to assay to molten steel;
(4) alterant is placed in to ladle bottom with iron sheet or masking foil by parcel, to the molten steel processing of going bad, deterroration is 1580 ℃, and the qualified molten steel of element is carried out to thread casting at 1520 ℃ of temperature;
(5), when cast(ing) surface temperature is no more than 600 ℃, cooled low-alloy liner plate is carried out to separation, fine grinding;
(6) the low-alloy liner plate after fine grinding is dropped into process furnace, be warming up to 1000 ℃, be incubated 2.5 hours; Then air blast quenching, then 270 ℃ of tempering are 2.1 hours, take out naturally cooling.
Embodiment tetra-:
The special-purpose low-alloy liner plate in mine, comprises the chemical composition of following weight percent: C0.38%, Si1.30%, and Mn0.80%, Sc0.20%, Cr1.80%, Lu0.005%, S0.04%, P0.04%, surplus is iron;
The making method of the special-purpose low-alloy liner plate in described mine comprises the following steps:
(1) adopting steel scrap, alloy, ferronickel, ferromanganese, molybdenum-iron is that raw material is prepared burden according to the proportioning of described low-alloy liner plate;
(2) raw material preparing is inserted to middle frequency furnace and carry out melting, smelting temperature is 1620 ℃;
(3) molten steel melting the being obtained analysis of testing, carries out element secondary proportioning according to assay to molten steel;
(4) alterant is placed in to ladle bottom with iron sheet or masking foil by parcel, to the molten steel processing of going bad, deterroration is 1580 ℃, and the qualified molten steel of element is carried out to thread casting at 1510 ℃ of temperature;
(5), when cast(ing) surface temperature is no more than 600 ℃, cooled low-alloy liner plate is carried out to separation, fine grinding;
(6) the low-alloy liner plate after fine grinding is dropped into process furnace, be warming up to 980 ℃, be incubated 2.2 hours; Then air blast quenching, then 260 ℃ of tempering are 2 hours, take out naturally cooling.
Embodiment five:
The special-purpose low-alloy liner plate in mine, comprises the chemical composition of following weight percent: C0.408%, Si1.50%, and Mn0.90%, Sc0.50%, Cr2.00%, Lu0.30%, S0.304%, P0.30%, surplus is iron;
The making method of the special-purpose low-alloy liner plate in described mine comprises the following steps:
(1) adopting steel scrap, alloy, ferronickel, ferromanganese, molybdenum-iron is that raw material is prepared burden according to the proportioning of described low-alloy liner plate;
(2) raw material preparing is inserted to middle frequency furnace and carry out melting, smelting temperature is 1640 ℃;
(3) molten steel melting the being obtained analysis of testing, carries out element secondary proportioning according to assay to molten steel;
(4) alterant is placed in to ladle bottom with iron sheet or masking foil by parcel, to the molten steel processing of going bad, deterroration is 1590 ℃, and the qualified molten steel of element is carried out to thread casting at 1530 ℃ of temperature;
(5), when cast(ing) surface temperature is no more than 600 ℃, cooled low-alloy liner plate is carried out to separation, fine grinding;
(6) the low-alloy liner plate after fine grinding is dropped into process furnace, be warming up to 1050 ℃, be incubated 2.8 hours; Then air blast quenching, then 280 ℃ of tempering are 2.2 hours, take out naturally cooling.
The present invention does not contain the noble metals such as molybdenum, nickel, copper, cost is low, add appropriate Sc, Lu, improve intensity and the wear resistance of liner plate, improve the hardening capacity of liner plate, improve liner plate tissue, low-alloy liner plate of the present invention has good toughness, has again higher hardness, under shock load, obtains strain-hardening, by metallographic structure, adjust simultaneously, can in a big way, control the matching relationship of its Hardness and toughness; Long service life of the present invention, hardness is moderate, and production technique is simple.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (4)
1. the special-purpose low-alloy liner plate in a mine, it is characterized in that, the chemical composition that comprises following weight percent: C0.38-0.48%, Si1.30-1.80%, Mn0.80-1.20%, Sc0.20-0.60%, Cr1.80-2.20%, Lu≤0.50%, S≤0.04%, P≤0.04%, surplus is iron.
2. the special-purpose low-alloy liner plate in mine according to claim 1, is characterized in that, comprises the chemical composition of following weight percent: C0.37%, Si1.46%, Mn0.95%, Sc0.50%, Cr2.10%, Lu0.10%, S0.005%, P0.005%, surplus is iron.
3. the special-purpose low-alloy liner plate in mine according to claim 1, is characterized in that, comprises the chemical composition of following weight percent: C0.46%, Si1.65%, Mn1.00%, Sc0.40%, Cr1.85%, Lu0.25%, S0.02%, P0.02%, surplus is iron.
4. according to the making method of the special-purpose low-alloy liner plate in the mine one of claims 1 to 3 Suo Shu, it is characterized in that, comprise the following steps:
(1) adopting steel scrap, alloy, ferronickel, ferromanganese, molybdenum-iron is that raw material is prepared burden according to the proportioning of described low-alloy liner plate;
(2) raw material preparing is inserted to middle frequency furnace and carry out melting, smelting temperature is 1600-1650 ℃;
(3) molten steel melting the being obtained analysis of testing, carries out element secondary proportioning according to assay to molten steel;
(4) alterant is placed in to ladle bottom with iron sheet or masking foil by parcel, to the molten steel processing of going bad, deterroration is 1570-1600 ℃, and the qualified molten steel of element is carried out to thread casting at 1500-1530 ℃ of temperature;
(5), when cast(ing) surface temperature is no more than 600 ℃, cooled low-alloy liner plate is carried out to separation, fine grinding;
(6) the low-alloy liner plate after fine grinding is dropped into process furnace, be warming up to 950-1050 ℃, be incubated 2-3 hours; Then air blast quenching, then 250-300 ℃ of tempering are 2-2.2 hours, take out naturally cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410286455.4A CN104087845A (en) | 2014-06-24 | 2014-06-24 | Low alloy liner plate specialized for mine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410286455.4A CN104087845A (en) | 2014-06-24 | 2014-06-24 | Low alloy liner plate specialized for mine |
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| CN104087845A true CN104087845A (en) | 2014-10-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106282830A (en) * | 2016-08-26 | 2017-01-04 | 宁波东电电力设备制造有限公司 | A kind of ash crusher abrasion-proof backing block |
| CN106282824A (en) * | 2016-08-25 | 2017-01-04 | 中建材宁国新马耐磨材料有限公司 | A kind of Technology for Heating Processing of wear resistant corrosion resistant multicomponent alloy steel liner plate |
| CN106756486A (en) * | 2016-12-14 | 2017-05-31 | 安徽瑞研新材料技术研究院有限公司 | A kind of wear resistant corrosion resistant mine alloy liner plate and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59200743A (en) * | 1983-04-26 | 1984-11-14 | Daido Steel Co Ltd | Sintered alloy steel |
| CN102517499A (en) * | 2011-12-19 | 2012-06-27 | 张家港市鼎力铸钢有限公司 | High-strength and low-cost dilute alloy wear resistant cast steel |
| CN103114252A (en) * | 2013-03-01 | 2013-05-22 | 河南理工大学 | Low-alloy wear-resistant steel for lining plate and preparation method thereof |
-
2014
- 2014-06-24 CN CN201410286455.4A patent/CN104087845A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59200743A (en) * | 1983-04-26 | 1984-11-14 | Daido Steel Co Ltd | Sintered alloy steel |
| CN102517499A (en) * | 2011-12-19 | 2012-06-27 | 张家港市鼎力铸钢有限公司 | High-strength and low-cost dilute alloy wear resistant cast steel |
| CN103114252A (en) * | 2013-03-01 | 2013-05-22 | 河南理工大学 | Low-alloy wear-resistant steel for lining plate and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106282824A (en) * | 2016-08-25 | 2017-01-04 | 中建材宁国新马耐磨材料有限公司 | A kind of Technology for Heating Processing of wear resistant corrosion resistant multicomponent alloy steel liner plate |
| CN106282824B (en) * | 2016-08-25 | 2017-12-29 | 中建材宁国新马耐磨材料有限公司 | A kind of Technology for Heating Processing of wear resistant corrosion resistant multicomponent alloy steel liner plate |
| CN106282830A (en) * | 2016-08-26 | 2017-01-04 | 宁波东电电力设备制造有限公司 | A kind of ash crusher abrasion-proof backing block |
| CN106756486A (en) * | 2016-12-14 | 2017-05-31 | 安徽瑞研新材料技术研究院有限公司 | A kind of wear resistant corrosion resistant mine alloy liner plate and preparation method thereof |
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Application publication date: 20141008 |