CN101403072A - Multielement low-alloy water quenching abrasion resistant steel - Google Patents
Multielement low-alloy water quenching abrasion resistant steel Download PDFInfo
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- CN101403072A CN101403072A CNA2008100797371A CN200810079737A CN101403072A CN 101403072 A CN101403072 A CN 101403072A CN A2008100797371 A CNA2008100797371 A CN A2008100797371A CN 200810079737 A CN200810079737 A CN 200810079737A CN 101403072 A CN101403072 A CN 101403072A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to multi-element low-alloy abrasion-resistant steel, in particular to the multi-element low-alloy abrasion-resistant steel specially used for manufacturing liners for a ball mill and mill cycles and mill bases for a runner milling, specifically the multi-element low-alloy water quenching abrasion-resistant steel, which solves the problem of lack of actually applicable multi-element low-alloy abrasion-resistant steel used for manufacturing liners for the ball mill and mill cycles and mill bases for the runner milling at present. The steel comprises the following elements by weight: 0.27-0.33 percent of C, 0.8-1.1 percent of Si, 1.0-1.5 percent of Mn, 0.035 percent or less of S, 0.035 percent or less of P, 0.8-1.2 percent of Cr, 0.08-0.12 percent of Re and 0.005-0.007 percent of B and undergoes the following thermal treatment: heating up to 1000-1050 DEG C, undergoing water quenching, tempering to 250 DEG C and then cooling naturally. The multi-element low-alloy water quenching abrasion-resistant steel of the invention with high anti-impact strength and abrasive resistance is specially used for manufacturing liners for the ball mill and mill cycles and mill bases for the runner milling, which can reduce the service cost of the liners for the ball mill and the mill cycles and mill bases for the runner milling and is beneficial for the magnetic separation and recovery of the grinded powder and particles.
Description
Technical field
The present invention relates to multi-element low-alloy wear-resistant steel, be particularly related to and be exclusively used in the multi-element low-alloy wear-resistant steel of making ball grinding machine lining board, the runner milling stone roller end, grinding circle, be specially a kind of multielement low-alloy water quenching abrasion resistant steel--C30CrMn2SiREB, this wear resisting steel is exclusively used in and makes ball grinding machine lining board, runner milling grinds the end, grinds circle.
Background technology
Ball grinding machine lining board, runner milling grind the end, the stone roller circle needs high impact resistance and high-wearing feature.At present broken ball grinding machine lining board, runner milling grind the end, grind to enclose and all make with high mangaenese steel.High mangaenese steel has advantages such as anti-impact force is strong, hardness is big, but its wear resistance is relatively poor relatively, when particularly ball mill, the runner milling of high manganese steel lining plate, the stone roller end, stone roller circle grind relative materials with smaller of hardness such as coal gangue, the condemnation factor of its liner plate, the stone roller end, stone roller circle is higher, causes ball mill, runner milling use cost height; And high mangaenese steel is nonmagnetic, thereby the powder under its grinding can not reclaim in magnetic separation.As making ball grinding machine lining board, the runner milling stone roller end with high mangaenese steel, grinding circle, when ball mill, runner milling are used to pulverize the refractory brick starting material, liner plate, grind the end, grind circle and go up grinding powder down and just sneaked in the refractory brick starting material, because can not the magnetic separation recovery, the performance and the color and luster of refractory brick can be influenced.Generally speaking, multi-element low-alloy wear-resistant steel is a kind of known steel, because its cost is relatively low, is used widely in some field.On some textbooks, handbook, its composition, content and heat treating method all there is certain explanation.At textbook, can find on the handbook, described multi-element low-alloy wear-resistant steel can comprise C usually, Si, Mn, S, Cr, P, RE (rare earth), B, Ti, V, elements such as Mo, the content of every kind of element has all provided the optional scope of a broad, but specifically select which element, adopt any content range and what heat treating method can make the multi-element low-alloy wear-resistant steel of gained reach ball grinding machine lining board with, runner milling grinds the end, grind the performance requriements of circle material requested, at textbook, can't learn in handbook or other available data, need suitable exploration, grope process, and facts have proved, the ball grinding machine lining board made from present described multi-element low-alloy wear-resistant steel, runner milling grinds the end, grind circle and can't satisfy required use properties really, especially aspect anti-impact force and wear resistance.Therefore, though but multi-element low-alloy wear-resistant steel has advantages such as the low magnetic separation recovery of use cost, do not see that ball grinding machine lining board, the runner milling made with multi-element low-alloy wear-resistant steel grind the end, grind the circle product, do not see relevant document road yet at present.
Summary of the invention
The present invention is in order to solve the problem that ball grinding machine lining board, runner milling grind the end, grind the multi-element low-alloy wear-resistant steel of circle that is used for that does not have at present actual to use, and a kind of multielement low-alloy water quenching abrasion resistant steel that ball grinding machine lining board, runner milling grind the end, grind circle that is exclusively used in is provided.
The present invention adopts following technical scheme to realize: a kind of multielement low-alloy water quenching abrasion resistant steel, the element that comprises following weight percent: C 0.27-0.33%, Si 0.8-1.1%, Mn 1.0-1.5%, S≤0.035%, P≤0.035%, Cr 0.8-1.2%, RE (rare earth) 0.08-0.12%, B 0.005-0.007%; And carry out following thermal treatment: be heated to 1000-1050 ℃, shrend then is tempered to 250 ℃, then naturally cooling again.The present invention grinds the end, grinds the requirement of circle to material according to ball grinding machine lining board, runner milling, found out by test and to be suitable for ball grinding machine lining board, runner milling and to grind the end, grind element and content thereof that the multielement low-alloy water quenching abrasion resistant steel of circle should comprise, and provided heat treated technical parameter.
The present invention has found out an accurate constituent content of cover and has been aided with unique thermal treatment process on the bases of experiment in a large number, has drawn a kind of multielement low-alloy water quenching abrasion resistant steel of making ball grinding machine lining board, the runner milling stone roller end, grinding circle that is exclusively used in.This multielement low-alloy water quenching abrasion resistant steel has high impact-resistant power and wear resistance, the hardness of this multielement low-alloy water quenching abrasion resistant steel (HRC) ± 50 after tested, impact toughness ± 60J/cm
2, yield strength ± 1300Mpa, fracture toughness ± 1500Mpa, elongation ± 3%.Its performance index satisfy as ball grinding machine lining board, runner milling grinds the end, grinds the index request that encloses manufactured materials, and some index is higher than existing high mangaenese steel.The liner plate made from multielement low-alloy water quenching abrasion resistant steel of the present invention, grind the end, grind circle and on the ball mill in Shanxi Province sun coal group two ore deposits, runner milling, use, pulverize various materials, its life-span can reach 30 days, and the liner plate that high mangaenese steel is made, grinds the end, grinds circle and can only use 10 days; 15 yuan/kilogram of multielement low-alloy water quenching abrasion resistant steels of the present invention, 10 yuan/kilogram in high mangaenese steel, the use cost of the liner plate that obvious multielement low-alloy water quenching abrasion resistant steel of the present invention is made, the stone roller end, stone roller circle is significantly less than high mangaenese steel.And multielement low-alloy water quenching abrasion resistant steel of the present invention has magnetic, and the powder under its grinding can reclaim in magnetic separation, can not influence the performance and the color and luster of related products (as refractory brick).
Embodiment
A kind of multielement low-alloy water quenching abrasion resistant steel, the element that comprises following weight percent: C 0.27% (or 0.33% or 0.28% or 0.29% or 0.30% or 0.31% or 0.32%), Si1.1% (or 0.8% or 0.9% or 1.0%), Mn 1.0% (or 1.5% or 1.1% or 1.2% or 1.3% or 1.4%), S≤0.035%, P≤0.035%, Cr 1.2% (or 0.8 or 0.9% or 1.0% or 1.1%), RE 0.08% (or 0.09% or 0.10% or 0.11% or 0.12%), B 0.007% (or 0.005% or 0.006%); And carry out following thermal treatment: be heated to 1000 ℃ (or 1050 ℃ or 1010 ℃ or 1020 ℃ or 1030 ℃ or 1040 ℃), shrend then is tempered to 250 ℃, then naturally cooling again.During concrete the smelting, usually adopt the scrap steel (soft steel) that reclaims as raw material, the C content of selected raw material (as scrap steel), contain the S amount, P content will be lower than content of the presently claimed invention, can contain a certain amount of Si and Mn in the soft steel, the content that soft steel is smelted fusing its Si of back and Mn all is lower than content of the presently claimed invention, by adding ferrosilicon, ferromanganese, ferrochrome, rare earth (adopts rare earth silicon usually, rare earth magnesium), ferro-boron is regulated each constituent content in the multielement low-alloy water quenching abrasion resistant steel respectively, and the technician of field of steel-making can be easily by chemical examination, technique means such as calculating are regulated the content of each element and are reached required requirement.The molten steel cast molding that constituent content is qualified is liner plate, grinds the end, grinds circle, to the liner plate after the moulding, grind the end, grind circle and heat-treat by above-mentioned technical parameter and obtain desired product.
Claims (1)
1, a kind of multielement low-alloy water quenching abrasion resistant steel is characterized by: the element that comprises following weight percent: C 0.27-0.33%, Si 0.8-1.1%, Mn 1.0-1.5%, S≤0.035%, P≤0.035%, Cr 0.8-1.2%, RE0.08-0.12%, B 0.005-0.007%; And carry out following thermal treatment: be heated to 1000-1050 ℃, shrend then is tempered to 250 ℃, then naturally cooling again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100797371A CN101403072A (en) | 2008-11-06 | 2008-11-06 | Multielement low-alloy water quenching abrasion resistant steel |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100797371A CN101403072A (en) | 2008-11-06 | 2008-11-06 | Multielement low-alloy water quenching abrasion resistant steel |
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| CN101403072A true CN101403072A (en) | 2009-04-08 |
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| CNA2008100797371A Pending CN101403072A (en) | 2008-11-06 | 2008-11-06 | Multielement low-alloy water quenching abrasion resistant steel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086672A (en) * | 2016-06-16 | 2016-11-09 | 马鞍山市程鹏耐磨材料有限公司 | A kind of wear-resistant complex element alloy steel ball casting and manufacture method thereof |
| CN107419167A (en) * | 2017-07-18 | 2017-12-01 | 河池市森机械有限责任公司 | The preparation method of ball grinding machine lining board |
-
2008
- 2008-11-06 CN CNA2008100797371A patent/CN101403072A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086672A (en) * | 2016-06-16 | 2016-11-09 | 马鞍山市程鹏耐磨材料有限公司 | A kind of wear-resistant complex element alloy steel ball casting and manufacture method thereof |
| CN107419167A (en) * | 2017-07-18 | 2017-12-01 | 河池市森机械有限责任公司 | The preparation method of ball grinding machine lining board |
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Open date: 20090408 |