CN103614666A - High-hardness and low-carbon steel material for pump valve and preparation method of high-hardness and low-carbon steel material - Google Patents
High-hardness and low-carbon steel material for pump valve and preparation method of high-hardness and low-carbon steel material Download PDFInfo
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- CN103614666A CN103614666A CN201310560719.6A CN201310560719A CN103614666A CN 103614666 A CN103614666 A CN 103614666A CN 201310560719 A CN201310560719 A CN 201310560719A CN 103614666 A CN103614666 A CN 103614666A
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- 229910001209 Low-carbon steel Inorganic materials 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims description 8
- 238000007670 refining Methods 0.000 claims abstract description 18
- 238000005266 casting Methods 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 229910052729 chemical element Inorganic materials 0.000 claims abstract description 7
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 238000010792 warming Methods 0.000 claims description 18
- 238000005275 alloying Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 10
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 7
- 229910052684 Cerium Inorganic materials 0.000 claims description 7
- 229910052796 boron Inorganic materials 0.000 claims description 7
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910000805 Pig iron Inorganic materials 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910021532 Calcite Inorganic materials 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 3
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 3
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 3
- NPUJHQNGUMWIMV-UHFFFAOYSA-L dicalcium pentamagnesium [dioxido-[oxo(trioxidosilyloxy)silyl]oxysilyl]oxy-[[dioxido-[oxo(trioxidosilyloxy)silyl]oxysilyl]oxy-oxosilyl]oxy-dioxidosilane dihydroxide Chemical compound [OH-].[OH-].[Mg++].[Mg++].[Mg++].[Mg++].[Mg++].[Ca++].[Ca++].[O-][Si]([O-])([O-])O[Si](=O)O[Si]([O-])([O-])O[Si](=O)O[Si]([O-])([O-])O[Si]([O-])([O-])O[Si](=O)O[Si]([O-])([O-])[O-] NPUJHQNGUMWIMV-UHFFFAOYSA-L 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 239000010977 jade Substances 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 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 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 3
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 3
- 229960001763 zinc sulfate Drugs 0.000 claims description 3
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 3
- 229910000851 Alloy steel Inorganic materials 0.000 abstract description 4
- 229910052787 antimony Inorganic materials 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 229910000954 Medium-carbon steel Inorganic materials 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a high-hardness and low-carbon steel material for a pump valve. The high-hardness and low-carbon steel material contains the following chemical elements in percentage by mass: 0.2-0.4% of C, 0.5-0.7% of Si, 4.3-4.6% of Mn, 0.8-1.2% of Cr, 0.12-0.24% of B, 0.02-0.04% of Ce, 0.03-0.05% of Sb, less than or equal to 0.04% of S, less than or equal to 0.04% of P and the balance of Fe. Elements such as Sb, Mn, Ce, B and the like are added on the basis of low-carbon and medium-carbon steel, the raw materials are added in batches, and the treatment temperature after casting is reasonably controlled, so that the obtained alloy steel is not only good in toughness and plasticity, but also high in hardness, impact resistance and wear resistance and good in corrosion resistance; when the alloy steel is used for a part such as a pump shaft, a bearing, a shaft sleeve, a delivery pipe, a pump shell and the like, the part is excellent in performance, and the service life of the part is prolonged by 1-2 times as compared with that of a common part; when a refining agent disclosed by the invention is used for casting production, the porosity in a casting is reduced by 1-2, and oxide inclusions are kept at about level 2.
Description
Technical field
The present invention relates to metallic substance preparation field, relate in particular to high rigidity low-carbon steel material and preparation method thereof for a kind of pump valve.
Background technology
The environment of pump valve work is various, badly, very high to the requirement of material, the steel alloy that pump valve is used at present has varied, technology has very much progress, but still have a lot of problems to exist, as wear resistance, hardness, rustless property, corrosion resistance nature, high and low temperature resistance, fragility, toughness etc., in a lot of occasions, can't meet the requirement of production, also require further improvement, to enhance productivity, reduce costs, improve security, for high-quality precision and sophisticated technology development provides safeguard, for social development provides power, task is also very arduous.
Summary of the invention
The object of the present invention is to provide high rigidity low-carbon steel material and preparation method thereof for a kind of pump valve, this alloy material has advantages of high rigidity, high-wearing feature, good toughness.
Technical scheme of the present invention is as follows:
A pump valve high rigidity low-carbon steel material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.5-0.7, manganese 4.3-4.6, chromium 0.8-1.2, boron 0.12-0.24, cerium 0.02-0.04, Sb0.03-0.05, S≤0.04, P≤0.04, surplus are iron.
The production method of high rigidity low-carbon steel material for described pump valve, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1-2 ratio, the pig iron is added to drop in stove and melt, carry out desulfurization, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add scrap iron fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) silicon, cerium; (2) manganese, boron; (3) other remaining components; The timed interval that each batch drops into element is 23-25 minute, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 200-210 ℃/h of speed, be warming up to 500-510 ℃, insulation 60-70 minute, with 200-210 ℃/h of speed, be warming up to 750-760 ℃ again, insulation 60-70 minute, with 170-180 ℃/h of speed, be warming up to 910-930 ℃ again, insulation 3-4 hour; With 150-160 ℃/h of speed, be cooled to 600-610 ℃ again, then be warming up to 750-760 ℃ with 200-210 ℃/h of speed, then be cooled to 500-510 ℃ with 150-160 ℃/h of speed, insulation 70-80 minute; With 150-160 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 2-3 hour; With 200-210 ℃/h of speed, be warming up to 300-310 ℃ again, then be cooled to 200-210 ℃ with 150-160 ℃/h of speed, then be warming up to 530-540 ℃ with 200-210 ℃/h of speed, insulation 2-3 hour, takes out air cooling and get final product.
Described refining agent is made by the raw material of following weight part: instrument comminuted steel shot 30-34, aluminium hydroxide 2-3, calcite 4-5, zinc sulfate 1-2, medical stone 1-2, montmorillonite 1-2, jade 2-3, Tremoliteor Tremoliteasbestos 3-4, Calcium Fluoride (Fluorspan) 1-2, Sodium Silicofluoride 4-5; Preparation method mixes each raw material, is heated to molten state, then, is poured into Quench in pure water, then is ground into 100-200 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2-3%, the nano-carbon powder of 1-2%, after mixing, under 8-15Mpa, be pressed into base, then, at 900-950 ℃, calcine 3-4 hour, cooling after, be ground into again 150-250 order powder, obtain.
Beneficial effect of the present invention
The present invention adds the elements such as calcium halophosphate activated by antimony andmanganese, cerium, boron on the basis of middle low carbon steel, throwing raw materials in batches, rationally control casting post-processing temperature, the steel alloy obtaining not only toughness, plasticity-is good, and hardness, shock-resistant, wear resistance good, erosion resistance is fine, for parts such as pump shaft, bearing, axle sleeve, transfer lime, pump cases, excellent performance, work-ing life is than the long 1-2 of common parts doubly; The present invention uses part scrap iron as raw material, and through secondary refining, makes more stable uniform of quality.Refining agent of the present invention is for Foundry Production, and the degree of porosity obviously improving in yield rate, particularly foundry goods reduces 1-2 degree, can not produce pore at cast(ing) surface, and trapped oxide also obviously reduces, and oxide inclusion is 2 grades of left and right.
Embodiment
A pump valve high rigidity low-carbon steel material, chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.5-0.7, manganese 4.3-4.6, chromium 0.8-1.2, boron 0.12-0.24, cerium 0.02-0.04, Sb0.03-0.05, S≤0.04, P≤0.04, surplus are iron.
Described pump valve by the production method of high rigidity low-carbon steel material is:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1.5 ratio, the pig iron is added to drop in stove and melt, carry out desulfurization, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add scrap iron fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) silicon, cerium; (2) manganese, boron; (3) other remaining components; The timed interval that each batch drops into element is 24 minutes, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 205 ℃/h of speed, be warming up to 505 ℃, be incubated 65 minutes, then be warming up to 755 ℃ with 205 ℃/h of speed, be incubated 65 minutes, then be warming up to 920 ℃ with 175 ℃/h of speed, be incubated 3.5 hours; With 155 ℃/h of speed, be cooled to 605 ℃ again, then be warming up to 755 ℃ with 205 ℃/h of speed, then be cooled to 505 ℃ with 155 ℃/h of speed, be incubated 75 minutes; With 155 ℃/h of speed, be cooled to 225 ℃ again, be incubated 2.5 hours; With 205 ℃/h of speed, be warming up to 305 ℃ again, then be cooled to 205 ℃ with 155 ℃/h of speed, then be warming up to 535 ℃ with 205 ℃/h of speed, be incubated 2.5 hours, take out air cooling and get final product.
Described refining agent by following weight part (kilogram) raw material make: instrument comminuted steel shot 32, aluminium hydroxide 2.5, calcite 4.5, zinc sulfate 1.5, medical stone 1.5, montmorillonite 1.5, jade 2.6, Tremoliteor Tremoliteasbestos 3.5, Calcium Fluoride (Fluorspan) 1.5, Sodium Silicofluoride 4.5; Preparation method mixes each raw material, is heated to molten state, then, is poured into Quench in pure water, then is ground into 150 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2.4%, 1.5% nano-carbon powder, after mixing, under 12Mpa, be pressed into base, then, at 930 ℃, calcine 3.5 hours, cooling after, then be ground into 200 order powder, obtain.
Pump valve of the present invention by the mechanical property of high rigidity low-carbon steel material is: tensile strength 1380MPa, yield strength 973MPa, unit elongation 15%, relative reduction in area 35%, impact absorbing energy 54J, impelling strength 65J/cm2, hardness 295HB.
Claims (4)
1. a pump valve high rigidity low-carbon steel material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.5-0.7, manganese 4.3-4.6, chromium 0.8-1.2, boron 0.12-0.24, cerium 0.02-0.04, Sb0.03-0.05, S≤0.04, P≤0.04, surplus are iron.
2. the production method of high rigidity low-carbon steel material for pump valve according to claim 1, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1-2 ratio, the pig iron is added to drop in stove and melt, carry out desulfurization, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add scrap iron fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) silicon, cerium; (2) manganese, boron; (3) other remaining components; The timed interval that each batch drops into element is 23-25 minute, after feeding intake, stirs.
3. the production method of high rigidity low-carbon steel material for pump valve according to claim 2, it is characterized in that: described casting postheat treatment is: first by room temperature, with 200-210 ℃/h of speed, be warming up to 500-510 ℃, insulation 60-70 minute, with 200-210 ℃/h of speed, be warming up to 750-760 ℃ again, insulation 60-70 minute, with 170-180 ℃/h of speed, be warming up to 910-930 ℃ again, insulation 3-4 hour; With 150-160 ℃/h of speed, be cooled to 600-610 ℃ again, then be warming up to 750-760 ℃ with 200-210 ℃/h of speed, then be cooled to 500-510 ℃ with 150-160 ℃/h of speed, insulation 70-80 minute; With 150-160 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 2-3 hour; With 200-210 ℃/h of speed, be warming up to 300-310 ℃ again, then be cooled to 200-210 ℃ with 150-160 ℃/h of speed, then be warming up to 530-540 ℃ with 200-210 ℃/h of speed, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method of high rigidity low-carbon steel material for pump valve according to claim 2, is characterized in that: described refining agent is made by the raw material of following weight part: instrument comminuted steel shot 30-34, aluminium hydroxide 2-3, calcite 4-5, zinc sulfate 1-2, medical stone 1-2, montmorillonite 1-2, jade 2-3, Tremoliteor Tremoliteasbestos 3-4, Calcium Fluoride (Fluorspan) 1-2, Sodium Silicofluoride 4-5; Preparation method mixes each raw material, is heated to molten state, then, is poured into Quench in pure water, then is ground into 100-200 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2-3%, the nano-carbon powder of 1-2%, after mixing, under 8-15Mpa, be pressed into base, then, at 900-950 ℃, calcine 3-4 hour, cooling after, be ground into again 150-250 order powder, obtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310560719.6A CN103614666A (en) | 2013-11-12 | 2013-11-12 | High-hardness and low-carbon steel material for pump valve and preparation method of high-hardness and low-carbon steel material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310560719.6A CN103614666A (en) | 2013-11-12 | 2013-11-12 | High-hardness and low-carbon steel material for pump valve and preparation method of high-hardness and low-carbon steel material |
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| CN103614666A true CN103614666A (en) | 2014-03-05 |
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| CN201310560719.6A Pending CN103614666A (en) | 2013-11-12 | 2013-11-12 | High-hardness and low-carbon steel material for pump valve and preparation method of high-hardness and low-carbon steel material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313497A (en) * | 2014-09-30 | 2015-01-28 | 合肥恒泰钢结构有限公司 | Medium/low carbon manganese steel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1536265A (en) * | 1977-11-03 | 1978-12-20 | Balandin J | Steel |
| JPS58113352A (en) * | 1981-12-28 | 1983-07-06 | Daido Steel Co Ltd | Alloy steel for hot working |
| CN1934282A (en) * | 2004-01-20 | 2007-03-21 | 日本精工株式会社 | Rolling bearing |
| CN101550518A (en) * | 2009-05-11 | 2009-10-07 | 西安国丰机械制造有限责任公司 | Boron-containing multi-element low alloy wear resistant cast steel and preparing method thereof |
| CN102892910A (en) * | 2010-05-10 | 2013-01-23 | 新日铁住金株式会社 | High-strength steel sheet and method for producing same |
| CN103088199A (en) * | 2011-11-04 | 2013-05-08 | 上海重型机器厂有限公司 | Heat treatment method after forging for forged steel bearing roller used for large heavy plate mill |
-
2013
- 2013-11-12 CN CN201310560719.6A patent/CN103614666A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1536265A (en) * | 1977-11-03 | 1978-12-20 | Balandin J | Steel |
| JPS58113352A (en) * | 1981-12-28 | 1983-07-06 | Daido Steel Co Ltd | Alloy steel for hot working |
| CN1934282A (en) * | 2004-01-20 | 2007-03-21 | 日本精工株式会社 | Rolling bearing |
| CN101550518A (en) * | 2009-05-11 | 2009-10-07 | 西安国丰机械制造有限责任公司 | Boron-containing multi-element low alloy wear resistant cast steel and preparing method thereof |
| CN102892910A (en) * | 2010-05-10 | 2013-01-23 | 新日铁住金株式会社 | High-strength steel sheet and method for producing same |
| CN103088199A (en) * | 2011-11-04 | 2013-05-08 | 上海重型机器厂有限公司 | Heat treatment method after forging for forged steel bearing roller used for large heavy plate mill |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313497A (en) * | 2014-09-30 | 2015-01-28 | 合肥恒泰钢结构有限公司 | Medium/low carbon manganese steel |
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