CN1099810A - Wear-resistant steel - Google Patents
Wear-resistant steel Download PDFInfo
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- CN1099810A CN1099810A CN 93117604 CN93117604A CN1099810A CN 1099810 A CN1099810 A CN 1099810A CN 93117604 CN93117604 CN 93117604 CN 93117604 A CN93117604 A CN 93117604A CN 1099810 A CN1099810 A CN 1099810A
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- Prior art keywords
- steel
- wear
- work hardening
- manganese
- low
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 50
- 239000010959 steel Substances 0.000 title claims abstract description 50
- 229910052748 manganese Inorganic materials 0.000 claims description 12
- 229910052804 chromium Inorganic materials 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 238000005482 strain hardening Methods 0.000 abstract description 16
- 238000003723 Smelting Methods 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 229910000734 martensite Inorganic materials 0.000 description 14
- 229910052799 carbon Inorganic materials 0.000 description 12
- 239000011572 manganese Substances 0.000 description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 229910001566 austenite Inorganic materials 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 7
- 239000011651 chromium Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000005275 alloying Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 229910000617 Mangalloy Inorganic materials 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 229910000604 Ferrochrome Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- QFGIVKNKFPCKAW-UHFFFAOYSA-N [Mn].[C] Chemical compound [Mn].[C] QFGIVKNKFPCKAW-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
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- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a novel wear-resistant steel which comprises 1.00-1.20% of C, 7.00-8.00% of Mn, 2.00-3.00% of Cr, 0.50-1.00% of Si, 0.10-0.15% of N, less than or equal to 0.09% of P and less than or equal to 0.05% of S. The workpiece made of the steel has good strength, plasticity and impact toughness, and has good work hardening performance under the working conditions of medium and low impact load, and the wear resistance of the workpiece exceeds that of the workpiece made of the traditional Mn 13. The steel has simple smelting, casting and heat treatment processes, low content of alloy elements, lower cost and good industrial application prospect and economic value.
Description
The present invention relates to a kind of wear resisting steel, especially nitrogenous manganese is wear resisting steel.
There are a large amount of starting material to need to carry out grinding in many industrial production sectors such as metallurgical mine, building materials, thermoelectricity through ball mill.Ball grinding machine lining board is the very big consumable accessory of consumption, the annual hundreds of thousands of ton that consumes.Usually ball grinding machine lining board adopts the Mn13 steel to make.The Mn13 steel is a traditional widely used wear resisting steel, the manganese content height of this steel, and its chemical ingredients is: C0.90~1.50%, Mn11.0~14.0%, Si0.30~1.0%, P≤0.09%, S≤0.05%.The casting of this kind steel requires it to be organized as single austenite with after use the tough processing of water back.Under the effect of thump load, viscous deformation under the Mn13 steel workpiece surface generation cold conditions, dislocation desity rolls up in the steel, piling up of dislocations and entanglement occur, and has mechanical twin to occur.Cause the work hardening of material owing to these reasons.Austenitic initial hardness is HB190~230, and work hardening layer hardness can reach HB500~800, and thin hardened layer can reach several millimeters to tens millimeters.It is very suitable on the large-size ball mill of crusher, excavator and grinding hard material that these characteristics make the Mn13 steel workpiece.But in, under the low ballistic working condition because shock load is little, the work hardening capacity of workpiece surface material is low, surface hardness often is lower than HB300~350, hardened layer is also very shallow, the wear resistance wretched insufficiency that seems.And the Mn13 steel is owing to manganese, carbon content height in the steel, the stabilization of austenite height, be difficult to occur ε ' martensite (the close-packed hexagonal martensite that deformation is brought out) during deformation, more difficult or α ' martensite (being the B.C.T. martensite that deformation is brought out) do not occur, be that martensitic being formed on only occupied very little proportion in the work hardening process, this greatly reduces the speed of work hardening, and the degree that hardness improves is also low.
Industry member has been carried out the raising wear resistance at medium and small impact load condition for this reason, the research of exploitation novel material.Experimental results show that, reduce manganese, carbon content in the Austenitic Manganese Steel, reduce austenitic stability, can promote martensitic transformation during deformation, increase the reinforcement ability of steel, make steel except effect, because the result of phase transformation has improved work hardening speed and obviously improved hardness owing to dislocation and mechanical twin.Therefore the steel grade that some low manganese carbon contents occurred is as the steel grades such as Mn8Mo, low-carbon Mn 13Mo of the U.S..But the steel grade cost that contains molybdenum is very high, and wear resistance is not greatly improved, and can not large-scale popularization use.Russian patent SU1650756 discloses a kind of wear resisting steel, its main component is C0.6~0.8%, Mn0.7~1.7%, Cr1.3~1.6%, V1.1~1.5%, Nb0.6~0.9%, Co0.3~0.7% has used alloying elements such as the vanadium more expensive than molybdenum, niobium, cobalt and content higher in steel, and cost is very high, and non-austenite structure can not guarantee the impelling strength of workpiece.Chinese patent 87100948 discloses a kind of antiwear low-manganese steel that is used to make grinding, disintegrating apparatus vulnerable part, and its main chemical compositions is C0.37~0.52%, Mn0.9~2.0%, Si0.17~0.37%.This class medium carbon low alloy steel is a martensite steel sections, poor toughness, and the resistance to shock loads ability is low, and the thermal treatment process complexity, occurs crackle easily.
The object of the invention will provide a kind of work hardening ability good exactly, and is not only wear-resisting but also higher impelling strength and intensity are arranged, and the low new steel grade of the simple cost of production technique.
To achieve these goals, proposed a kind of invention of wear resisting steel, the principal character of this steel is to contain: C1.00~1.20%, Mn7.00~8.00%, Cr2.00~3.00%, Si0.50~1.00%, N0.10~0.15%, P≤0.09%, S≤0.05%.
According to the failure analysis result to the Mn13 steel liner plate, requiring novel material must be austenitic steel, good plasticity, toughness and higher intensity, higher initial hardness and good work hardening capacity should be arranged, and production cost should not increase.So the present invention adopts the manganese of moderate content, use chromium and nitrogen as the alloying element of strengthening and improve work hardening capacity and wear resistance.Each component content determine to be based on following consideration.
Carbon is the element that promotes that austenite structure forms in manganese steel, and the solution strengthening effect of carbon improves the intensity of steel and initial hardness, thereby improves the wear resistance of steel.But carbon content surpasses the toughness that can reduce steel after 1.20%, and high-load on the other hand carbon increases stabilization of austenite and improves austenitic stacking fault energy, and is unfavorable to the work hardening ability of steel.High carbon content obtains the single-phase austenite structure difficulty that becomes when also making the tough processing of water, high-carbon content makes ε ' martensite be difficult to form the more difficult formation of α ' martensite.These all are unfavorable for improving wear resistance.Therefore carbon content can not be too high, is advisable with 1.00~1.20%.
Manganese is the element of stable austenite, reduces manganese content and helps the martensitic formation of α ', and to work hardening, it is all favourable to improve hardness and wear resistance.But manganese can not fall lowly excessively, otherwise the intensity of steel and mould, toughness reduces too much.Because nitrogen solubleness in manganese is high in iron, for making full use of the effect of nitrogen, manganese content also can not be low excessively.Take all factors into consideration the influence of various factors, determine that manganese content is 7.00~8.00%.
Nitrogen is alloying element among the present invention, though its content important role less.The main effect of nitrogen is crystal grain thinning, solution strengthening, raising intensity and impelling strength.Nitrogen helps fault, mechanical twin, α ' martensite and the martensitic formation of ε ', thereby improves work hardening capacity and wear resistance.According to experiment, the content of nitrogen is suitable in 0.10~0.15% scope.
Chromium is alloying element the most frequently used in the Austenitic Manganese Steel, and chromium in austenite, increases the intensity of steel through solid solution after the solution treatment.Add small additions of chromium in the steel and can remedy the decline that reduces the strength property that causes owing to manganese content, make the intensity of steel remain on higher level.Chromium reduces stacking fault energy in addition, helps fault, mechanical twin, α ' martensite and the martensitic formation of ε ', helps improving work hardening capacity and wear resistance.Chromium content is 2.00~3.00% among the present invention.
Other composition all is controlled in the normal ranges among the present invention.As silicon is 0.50~1.00%, objectionable constituent P≤0.09%, S≤0.05%.
The smelting of wear resisting steel of the present invention, cast are identical with conventional Mn13, but since among the present invention the manganese content of steel obviously reduce than Mn13 and contain chromium, the more carbide of formation easily in the as cast condition undertissue.Therefore the temperature of solution treatment (being the tough processing of water) will suitably improve, and its lower limit temperature is not less than 1100 ℃, is advisable with 1100~1130 ℃, improves 20~30 ℃ than the treatment temp of Mn13 steel.
Because smelting, casting, the thermal treatment process of wear resisting steel of the present invention are simple, and the alloying element content of wear resisting steel of the present invention is low, so cost is low, and (ferrochrome in the starting material is a high carbon ferro-chrome, its price is the same substantially with ferromanganese), the production of the attrition component of low gouging abrasion load condition condition has favorable industrial application prospect and high economic worth in can being widely used in.
According to test-results, the optimal components scope of wear resisting steel of the present invention is: C1.10~1.20%, Mn7.50~8.00%, Cr2.00~2.50%, Si0.50~0.70%, N0.10~0.12%, P≤0.08%, S≤0.04%.Producing the wear resisting steel of mentioned component can smelt in the most frequently used basic electric arc furnace or induction furnace.Molten steel carries out final deoxygenation with aluminium, and the add-on of aluminium is 0.10~0.15% of a molten steel weight.Foundry goods uses after the tough processing of water.
After tested, the mechanical property of wear resisting steel of the present invention is as follows:
σ0.2(MPa) σb(MPa) δ(%) ak(J/cm
2)
450~460 600~700 13~16 100~110
As seen the σ 0.2 of novel material surpasses the level (300MPa) of Mn13, and σ b is equivalent to the level (650MPa) of Mn13, and impelling strength and plasticity index are also all very high, can satisfy the needs of industrial application.Particularly novel material in, work hardening ability is fine under the low impact abrasive wear working condition, work hardening speed is fast, hardenability is high, working-surface hardness can reach HV1070, substantially exceed the wear resistance of Mn13 under the same terms, under the condition of impact abrasive of simulation ball mill, its wear weight loss is 0.38395g, and the wear weight loss of Mn13 is 0.67266g, and wear resistance has improved 75%.
Claims (2)
1, a kind of wear resisting steel, its feature is in containing C 1.00~1.20%, and Mn 7.00~8.00%, and Cr 2.00~3.00%, and Si 0.50~1.00%, and N 0.10~0.15%, P≤0.09%, S≤0.50.
2, wear resisting steel as claimed in claim 1.The optimum range that it is characterized in that each component is: C1.10~1.20%, Mn7.50~8.00%, Cr2.00~2.50%, Si0.50~0.70%, N0.10~0.12%, P≤0.08%, S≤0.04%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN 93117604 CN1099810A (en) | 1993-09-11 | 1993-09-11 | Wear-resistant steel |
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Application Number | Priority Date | Filing Date | Title |
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CN 93117604 CN1099810A (en) | 1993-09-11 | 1993-09-11 | Wear-resistant steel |
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CN1099810A true CN1099810A (en) | 1995-03-08 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102242317A (en) * | 2010-09-21 | 2011-11-16 | 王军祥 | Multielement alloyed impact-fatigue-resistant wear-resistant steel |
CN104630642A (en) * | 2015-02-06 | 2015-05-20 | 铜陵百荣新型材料铸件有限公司 | Heat-resistant and wear-resistant cast steel |
CN105112793A (en) * | 2015-08-10 | 2015-12-02 | 霍邱县忠振耐磨材料有限公司 | Medium manganese steel jaw plate for small- and medium-sized jaw crusher and manufacturing method thereof |
CN111074171A (en) * | 2020-01-16 | 2020-04-28 | 鞍钢集团矿业有限公司 | ZG130Mn8Cr2VTiRe medium manganese wear-resistant steel and preparation method thereof |
-
1993
- 1993-09-11 CN CN 93117604 patent/CN1099810A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102242317A (en) * | 2010-09-21 | 2011-11-16 | 王军祥 | Multielement alloyed impact-fatigue-resistant wear-resistant steel |
CN102242317B (en) * | 2010-09-21 | 2015-04-15 | 王军祥 | Multielement alloyed impact-fatigue-resistant wear-resistant steel |
CN104630642A (en) * | 2015-02-06 | 2015-05-20 | 铜陵百荣新型材料铸件有限公司 | Heat-resistant and wear-resistant cast steel |
CN105112793A (en) * | 2015-08-10 | 2015-12-02 | 霍邱县忠振耐磨材料有限公司 | Medium manganese steel jaw plate for small- and medium-sized jaw crusher and manufacturing method thereof |
CN111074171A (en) * | 2020-01-16 | 2020-04-28 | 鞍钢集团矿业有限公司 | ZG130Mn8Cr2VTiRe medium manganese wear-resistant steel and preparation method thereof |
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