CN103060688B - Wear-resisting steel plate for mining machinery - Google Patents
Wear-resisting steel plate for mining machinery Download PDFInfo
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- CN103060688B CN103060688B CN201210595095.7A CN201210595095A CN103060688B CN 103060688 B CN103060688 B CN 103060688B CN 201210595095 A CN201210595095 A CN 201210595095A CN 103060688 B CN103060688 B CN 103060688B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 51
- 239000010959 steel Substances 0.000 title claims abstract description 51
- 238000005065 mining Methods 0.000 title claims abstract description 12
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 19
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 18
- 239000010936 titanium Substances 0.000 claims abstract description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 9
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 8
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 claims abstract description 8
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 claims abstract description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 7
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 27
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- -1 aluminum nitride compound Chemical class 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 7
- 229910000851 Alloy steel Inorganic materials 0.000 abstract description 6
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005275 alloying Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 238000005496 tempering Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 229910017083 AlN Inorganic materials 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
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- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a wear-resisting steel plate for mining machinery. Wear-resisting alloy steel comprises the following components in percent by weight: 0.7 to 0.9 percent of C, 0.6 to 0.8 percent of Si, 1.6 to 1.8 percent of Mn, less than or equal to 0.02 percent of P, less than or equal to 0.005 percent of S, 0.04 to 0.06 percent of La, 0.2 to 0.3 percent of V, 0.2 to 0.4 percent of Ti, 0.02 to 0.04 percent of N, 0.02 to 0.06 percent of Al, 0.003 to 0.005 percent of B, and the balance of Fe and inevitable impurities. The wear-resisting steel plate contains compounds such as titanium carbide, vanadium carbide, 3-nitrogen vanadium, titanium boride and aluminum nitride, which are dispersed and distributed in a steel substrate.
Description
Technical field
The present invention relates to technical field of ferrous metallurgy, particularly a kind of mining machinery wear-resisting steel plate.
Background technology
It is severe especially that wear-resisting steel plate is widely used in working conditions, requires on the engineering goods such as high strength, high-wear resistance.As various mining machinery, grab bucket, stacker-reclaimer, conveying warp architecture etc.Therefore, this kind of wear-resisting steel plate requires higher hardness.The current general alloy content of domestic wear resisting steel is higher, although can meet the requirement of hardness, plasticity and toughness are relatively poor, have impact on its application on different mechanical field to a certain extent.
Before making the present invention, " a kind of ultrahigh-strength wear-resistant steel and production method thereof " patent of Wuhan Iron and Steel Company's invention, the composition range of this steel is: C 0.10-0.17%, Si 0.25-0.50%, Mn 1.20-1.50%, P≤0.018%, S≤0.008%, Cr 0.20-0.50%, Ni 0.25-0.50%, Mo 0.10-0.40%, Als 0.02-0.06%, B≤0.005%, RE≤150g/ ton steel; This steel adopts the production technique of controlled rolling+modified, and not containing V in this composition of steel, tensile strength is about 1300MPa, and Brinell hardness number HB reaches about 400.But this steel contains the noble metal elements such as higher Ni, Mo, and cost is relatively high.
Also have " a kind of high-strength abrasion-proof plate and preparation method thereof " and " a kind of quenching and tempering type abrasion resistant steel and heat treating method thereof " patent of the invention of Wuyang Iron And Steel Company, its composition is respectively: C0.12-0.16%, Si 0.10-0.70%, Mn0.90-1.50%, P≤0.020%, S≤0.010%, Cr0.20-0.70%, Ni0.05-0.30%, V0.03-0.08%, Nb0.01-0.06%, Mo0.10-0.50%, Ti0.01-0.06%, Al0.02-0.08%, B0.0005-0.0030% and C0.14-0.18%, Si0.20-0.40%, Mnl.20-1.40%, P≤0.015%, S≤0.005%, Cr0.50-0.70%, Ni0.40-0.55%, V 0.03-0.08%, Nb 0.02-0.03%, Ti 0.015-0.030%, Mo 0.40-0.50%, Al0.02-0.045%, B 0.0015-0.0030%, all with the addition of the precious metal elements such as Nb, Ni, Mo, V of different content in the composition of two patents, considerably increase production cost.Wherein also contain Cu in second patent, the cost of two patents is all higher.The tempering temperature of first patent, at 150-250 DEG C, belongs to low-temperaturetempering, and normal industrial tempering temperature is at 400-700 DEG C, and in volume industrial production, organization of production is all more difficult with control, greatly have impact on the normal production of heat treatment furnace.
Cr all containing high level in the wear resisting steel of prior art, although Cr element can significantly improve the hardness of steel, and can improve wear resisting property, itself and carbon easily form thick carbide, thus significantly reduce the toughness of steel, therefore do not add Cr element in wear resisting steel of the present invention.
Carbon content design during steel of the present invention adopts, passes through the intensity of carbon raising steel itself, hardness and wear resistance on the one hand, forms hardness and the wear resisting property that appropriate carbide significantly improves steel on the other hand by carbon and other alloying elements such as titanium, vanadium.
On the basis of great many of experiments, determine the alloying element content of V, Ti, N, Al, the B in steel of the present invention, between these alloying elements and and carbon between form the compounds such as titanium carbide, vanadium carbide, vanadium three nitrogen, titanium boride, aluminium nitride, make the hardness of steel and wear-resistingly to increase substantially.
The present invention adds appropriate rare-earth elements of lanthanum, the form and distribution that it can be coordinated improve above-claimed cpd, thus auxiliary obdurability and the wear resistance improving steel indirectly.
In sum, the above-mentioned alloying element in steel of the present invention complements each other, synergy.The hardness of wear resisting steel of the present invention is improved, and its Brinell hardness number can reach HB580-620, can guarantee good wear resisting property.Its tensile strength is no less than 1200MPa, and unit elongation is greater than 8%, and its obdurability is good as seen.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to provide a kind of mining machinery wear-resisting steel plate, and this steel plate has good obdurability, higher hardness, and wear resisting property is excellent, and cost is low.
For achieving the above object, the present invention adopts following technical scheme:
A kind of mining machinery wear-resisting steel plate, described wear-resisting alloy steel is made up of following component with (weight) percentages: C:0.7-0.9%, Si:0.6-0.8%, Mn:1.6-1.8%, P≤0.02%, S≤0.005%, La:0.04-0.06%, V:0.2-0.3%, Ti:0.2-0.4%, N:0.02-0.04%, Al:0.02-0.06%, B:0.003-0.005%, all the other are iron Fe and inevitable impurity, containing titanium carbide in described wear-resisting steel plate, vanadium carbide, vanadium three nitrogen, the compound such as titanium boride and aluminium nitride, these compounds Dispersed precipitate in steel matrix.
Preferably, described wear-resisting alloy steel is made up of following component with (weight) percentages: C:0.8%, Si:0.7%, Mn:1.7%, P≤0.02%, S≤0.005%, La:0.05%, V:0.25%, Ti:0.3%, N:0.03%, Al:0.04%, B:0.004%, all the other are iron Fe and inevitable impurity.
Wear resisting steel of the present invention can adopt following preparation method:
1) smelt: comprise desulfurizing iron, converter top bottom blowing, vacuum-treat, adjusting component meets above-mentioned requirements, controlling tapping temperature is about 1540-1580 DEG C;
2) continuous casting: controlling Metal in Tundish superheating temperature is about 25-45 DEG C, and continuous casting becomes base;
3) rolling: slab heating temperature is about 1210-1230 DEG C, start rolling temperature is about 1150-1170 DEG C, and finishing temperature is about 900-920 DEG C, rolls rear controlled cooling model speed for about 15-25 DEG C/sec; Controlled cooling model is to about 400-450 DEG C;
4) about thermal treatment: quenching temperature 980-1010 DEG C, heat-up time 3.5-4.5min/mm × thickness of slab; About tempering holding temperature 220-240 DEG C, soaking time 5-6min/mm × thickness of slab.
Embodiment
Further illustrate the present invention below by embodiment, but the invention is not restricted to following embodiment.
Embodiment one
A kind of mining machinery wear-resisting steel plate, described wear-resisting alloy steel is made up of following component with (weight) percentages: C:0.7%, Si:0.8%, Mn:1.6%, P≤0.02%, S≤0.005%, La:0.06%, V:0.2%, Ti:0.4%, N:0.02%, Al:0.06%, B:0.003%, all the other are iron Fe and inevitable impurity, containing titanium carbide, vanadium carbide, vanadium three nitrogen, titanium boride and aluminum nitride compound in described wear-resisting steel plate, these compounds Dispersed precipitate in steel matrix.
Embodiment two
A kind of mining machinery wear-resisting steel plate, described wear-resisting alloy steel is made up of following component with (weight) percentages: C:0.9%, Si:0.6%, Mn:1.8%, P≤0.02%, S≤0.005%, La:0.04%, V:0.3%, Ti:0.2%, N:0.04%, Al:0.02%, B:0.005%, all the other are iron Fe and inevitable impurity, containing titanium carbide, vanadium carbide, vanadium three nitrogen, titanium boride and aluminum nitride compound in described wear-resisting steel plate, these compounds Dispersed precipitate in steel matrix.
Embodiment three
A kind of preparation method of mining machinery wear-resisting steel plate, described wear-resisting alloy steel is made up of following component with (weight) percentages: C:0.8%, Si:0.7%, Mn:1.7%, P≤0.02%, S≤0.005%, La:0.05%, V:0.25%, Ti:0.3%, N:0.03%, Al:0.04%, B:0.004%, all the other are iron Fe and inevitable impurity, containing titanium carbide, vanadium carbide, vanadium three nitrogen, titanium boride and aluminum nitride compound in described wear-resisting steel plate, these compounds Dispersed precipitate in steel matrix.
Applicant states, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, namely do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (2)
1. a mining machinery wear-resisting steel plate, it is characterized in that, described wear-resisting steel plate is made up of following component with (weight) percentages: C:0.7-0.9%, Si:0.6-0.8%, Mn:1.6-1.8%, P≤0.02%, S≤0.005%, La:0.04-0.06%, V:0.2-0.3%, Ti:0.2-0.4%, N:0.02-0.04%, Al:0.02-0.06%, B:0.003-0.005%, all the other are iron Fe and inevitable impurity, V in described wear-resisting steel plate, Ti, N, Al, between B and and C between form titanium carbide, vanadium carbide, vanadium three nitrogen, titanium boride and aluminum nitride compound, these compounds Dispersed precipitate in steel matrix.
2. a kind of mining machinery wear-resisting steel plate as claimed in claim 1, is characterized in that, described wear-resisting steel plate is made up of following component with (weight) percentages: C:0.8%, Si:0.7%, Mn:1.7%, P≤0.02%, S≤0.005%, La:0.05%, V:0.25%, Ti:0.3%, N:0.03%, Al:0.04%, B:0.004%, all the other are iron Fe and inevitable impurity.
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| CN201210595095.7A CN103060688B (en) | 2012-12-26 | 2012-12-26 | Wear-resisting steel plate for mining machinery |
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| CN201210595095.7A CN103060688B (en) | 2012-12-26 | 2012-12-26 | Wear-resisting steel plate for mining machinery |
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| CN103060688A CN103060688A (en) | 2013-04-24 |
| CN103060688B true CN103060688B (en) | 2015-07-15 |
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| CN105316572A (en) * | 2015-11-25 | 2016-02-10 | 怀宁县明月矿山开发有限责任公司 | Wear-resistant steel plate for mining machinery |
| CN106399866B (en) * | 2016-09-02 | 2017-11-07 | 机械科学研究总院先进制造技术研究中心 | A kind of high-strength low-alloy abrasion-resistant stee containing N, Al |
| CN109207859A (en) * | 2018-11-27 | 2019-01-15 | 汪杨志 | A kind of Wear-resisting steel plate for mining machinery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199737A (en) * | 2010-03-26 | 2011-09-28 | 宝山钢铁股份有限公司 | 600HB-grade wear resistant steel plate and its manufacturing method |
| CN102296234A (en) * | 2011-09-07 | 2011-12-28 | 柳州钢铁股份有限公司 | Abrasion-resistant steel plate and production device and production method thereof |
| CN102618792A (en) * | 2012-03-29 | 2012-08-01 | 莱芜钢铁集团有限公司 | High-strength abrasion-resistant steel for engineering machinery and manufacturing method thereof |
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| JP5186809B2 (en) * | 2007-05-29 | 2013-04-24 | Ｊｆｅスチール株式会社 | Wear-resistant steel plate with excellent workability and method for producing the same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199737A (en) * | 2010-03-26 | 2011-09-28 | 宝山钢铁股份有限公司 | 600HB-grade wear resistant steel plate and its manufacturing method |
| CN102296234A (en) * | 2011-09-07 | 2011-12-28 | 柳州钢铁股份有限公司 | Abrasion-resistant steel plate and production device and production method thereof |
| CN102618792A (en) * | 2012-03-29 | 2012-08-01 | 莱芜钢铁集团有限公司 | High-strength abrasion-resistant steel for engineering machinery and manufacturing method thereof |
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