CN103628001A - Alloy steel material for corrosion-resistant pump valve and preparation method thereof - Google Patents
Alloy steel material for corrosion-resistant pump valve and preparation method thereof Download PDFInfo
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- CN103628001A CN103628001A CN201310558557.2A CN201310558557A CN103628001A CN 103628001 A CN103628001 A CN 103628001A CN 201310558557 A CN201310558557 A CN 201310558557A CN 103628001 A CN103628001 A CN 103628001A
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Abstract
The invention relates to an alloy steel material for a corrosion-resistant pump valve, which contains the following chemical elements in percentage by mass: 0.2-0.4% of carbon, 0.8-1.1% of silicon, 1.7-1.9% of manganese, 2.4-2.6% of nickel, 1.3-1.5% of chromium, 0.6-0.8% of niobium, 1.1-1.3% of molybdenum, 0.08-0.12% of Sb, 0.12-0.16% of Tm, at most 0.04% of S, at most 0.04% of P and the balance of iron. The alloy steel provided by the invention has the advantages of high hardness, favorable toughness, favorable abrasion resistance, high hot strength, corrosion resistance, higher fatigue strength, favorable casting property and high casting yield. The alloy steel is suitable for high-wear-rate parts, such as pump shafts, valves, bearings and the like. When the refining agent is used for casting production, the porosity in the casting is lowered by 1-2 degrees, and the oxide inclusions are lowered by 2 levels or so.
Description
Technical field
The present invention relates to metallic substance preparation field, relate in particular to a kind of corrosion-resistant pump valve alloy steel material and preparation method thereof.
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 a kind of corrosion-resistant pump valve alloy steel material and preparation method thereof, this alloy material has high rigidity, wear-resisting, corrosion-resistant, impact-resistant advantage.
Technical scheme of the present invention is as follows:
A corrosion-resistant pump valve alloy steel material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.8-1.1, manganese 1.7-1.9, nickel 2.4-2.6, chromium 1.3-1.5, niobium 0.6-0.8, molybdenum 1.1-1.3, Sb0.08-0.12, Tm0.12-0.16, S≤0.04, P≤0.04, surplus are iron.
The production method of alloy steel material for described corrosion-resistant 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, chromium, nickel; (2) manganese, Sb; (3) other remaining components; The timed interval that each batch drops into element is 22-25 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 700-710 ℃ again, insulation 60-70 minute, with 170-180 ℃/h of speed, be warming up to 925-940 ℃ again, insulation 3-4 hour; With 180-190 ℃/h of speed, be cooled to 600-610 ℃ again, then be warming up to 700-710 ℃ with 200-210 ℃/h of speed, then be cooled to 480-500 ℃ with 180-190 ℃/h of speed, insulation 70-80 minute; With 180-190 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 2-3 hour; With 200-210 ℃/h of speed, be warming up to 330-350 ℃ again, then be cooled to 200-210 ℃ with 180-190 ℃/h of speed, then be warming up to 535-550 ℃ with 180-190 ℃/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
Steel alloy provided by the invention not only has high hardness, but also has good toughness, and wear resisting property is good, heat is strong high, corrosion-resistant, also has higher fatigue strength, and good casting property, and casting yield is high; The present invention uses part scrap iron as raw material, and through secondary refining, rationally controls casting postheat treatment temperature, and throwing raw materials, makes more stable uniform of alloy quality in batches, improves comprehensive mechanical property.Steel alloy of the present invention is applicable to the high parts of wear rate such as pump shaft, valve, bearing.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 corrosion-resistant pump valve alloy steel material, chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.8-1.1, manganese 1.7-1.9, nickel 2.4-2.6, chromium 1.3-1.5, niobium 0.6-0.8, molybdenum 1.1-1.3, Sb0.08-0.12, Tm0.12-0.16, S≤0.04, P≤0.04, surplus are iron.
Described corrosion-resistant pump valve is as follows by the production method of alloy steel material:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1.6 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, chromium, nickel; (2) manganese, Sb; (3) other remaining components; The timed interval that each batch drops into element is 23 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 705 ℃ with 205 ℃/h of speed, be incubated 65 minutes, then be warming up to 930 ℃ with 175 ℃/h of speed, be incubated 3.4 hours; With 185 ℃/h of speed, be cooled to 605 ℃ again, then be warming up to 705 ℃ with 205 ℃/h of speed, then be cooled to 485 ℃ with 185 ℃/h of speed, be incubated 75 minutes; With 185 ℃/h of speed, be cooled to 225 ℃ again, be incubated 2.5 hours; With 205 ℃/h of speed, be warming up to 340 ℃ again, then be cooled to 205 ℃ with 185 ℃/h of speed, then be warming up to 540 ℃ with 185 ℃/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.
The corrosion-resistant pump valve of the present invention by the mechanical property of alloy steel material is: tensile strength 1368MPa, yield strength 952MPa, unit elongation 14.5%, relative reduction in area 34.2%, impact absorbing energy 53.8J, impelling strength 63.8J/cm2, hardness 286HB.
Claims (4)
1. a corrosion-resistant pump valve alloy steel material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.2-0.4, silicon 0.8-1.1, manganese 1.7-1.9, nickel 2.4-2.6, chromium 1.3-1.5, niobium 0.6-0.8, molybdenum 1.1-1.3, Sb0.08-0.12, Tm0.12-0.16, S≤0.04, P≤0.04, surplus are iron.
2. the production method of alloy steel material for corrosion-resistant 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, chromium, nickel; (2) manganese, Sb; (3) other remaining components; The timed interval that each batch drops into element is 22-25 minute, after feeding intake, stirs.
3. the production method of alloy steel material for corrosion-resistant 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 700-710 ℃ again, insulation 60-70 minute, with 170-180 ℃/h of speed, be warming up to 925-940 ℃ again, insulation 3-4 hour; With 180-190 ℃/h of speed, be cooled to 600-610 ℃ again, then be warming up to 700-710 ℃ with 200-210 ℃/h of speed, then be cooled to 480-500 ℃ with 180-190 ℃/h of speed, insulation 70-80 minute; With 180-190 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 2-3 hour; With 200-210 ℃/h of speed, be warming up to 330-350 ℃ again, then be cooled to 200-210 ℃ with 180-190 ℃/h of speed, then be warming up to 535-550 ℃ with 180-190 ℃/h of speed, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method of alloy steel material for corrosion-resistant 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.
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| CN201310558557.2A CN103628001A (en) | 2013-11-12 | 2013-11-12 | Alloy steel material for corrosion-resistant pump valve and preparation method thereof |
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| CN201310558557.2A CN103628001A (en) | 2013-11-12 | 2013-11-12 | Alloy steel material for corrosion-resistant pump valve and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213042A (en) * | 2014-08-05 | 2014-12-17 | 安徽荣达阀门有限公司 | Alloy steel material for pump shell and manufacturing method thereof |
| CN104988508A (en) * | 2015-01-21 | 2015-10-21 | 许明东 | Simple anti-rusting method for house heat supply network pipes and radiators before heat supply stopping |
| CN112447174A (en) * | 2019-08-29 | 2021-03-05 | 阿里巴巴集团控股有限公司 | Service providing method, device and system, computing device and storage medium |
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| JPS5827941A (en) * | 1981-08-11 | 1983-02-18 | Hitachi Ltd | Manufacture of amorphous thin film |
| CN86107901A (en) * | 1985-11-22 | 1987-05-20 | 帕金-埃尔默有限公司 | The iron alloy that contains molybdenum, copper and boron |
| CN1714159A (en) * | 2002-11-19 | 2005-12-28 | 工业钢克鲁梭公司 | Method for making an abrasion resistant steel plate and plate obtained |
| CN102409138A (en) * | 2011-10-31 | 2012-04-11 | 芜湖山桥铁路器材有限公司 | Process for manufacturing alloy steel for rail frog |
| CN102653809A (en) * | 2012-03-16 | 2012-09-05 | 张晖 | Composite refining agent for metallurgy and processing technique thereof |
| CN102741440A (en) * | 2010-05-31 | 2012-10-17 | 新日本制铁株式会社 | Steel material for quenching and method of producing same |
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2013
- 2013-11-12 CN CN201310558557.2A patent/CN103628001A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5827941A (en) * | 1981-08-11 | 1983-02-18 | Hitachi Ltd | Manufacture of amorphous thin film |
| CN86107901A (en) * | 1985-11-22 | 1987-05-20 | 帕金-埃尔默有限公司 | The iron alloy that contains molybdenum, copper and boron |
| CN1714159A (en) * | 2002-11-19 | 2005-12-28 | 工业钢克鲁梭公司 | Method for making an abrasion resistant steel plate and plate obtained |
| CN102741440A (en) * | 2010-05-31 | 2012-10-17 | 新日本制铁株式会社 | Steel material for quenching and method of producing same |
| CN102409138A (en) * | 2011-10-31 | 2012-04-11 | 芜湖山桥铁路器材有限公司 | Process for manufacturing alloy steel for rail frog |
| CN102653809A (en) * | 2012-03-16 | 2012-09-05 | 张晖 | Composite refining agent for metallurgy and processing technique thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213042A (en) * | 2014-08-05 | 2014-12-17 | 安徽荣达阀门有限公司 | Alloy steel material for pump shell and manufacturing method thereof |
| CN104988508A (en) * | 2015-01-21 | 2015-10-21 | 许明东 | Simple anti-rusting method for house heat supply network pipes and radiators before heat supply stopping |
| CN112447174A (en) * | 2019-08-29 | 2021-03-05 | 阿里巴巴集团控股有限公司 | Service providing method, device and system, computing device and storage medium |
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