CN103667917A - High-temperature-resistant low-carbon steel material and preparation method thereof - Google Patents
High-temperature-resistant low-carbon steel material and preparation method thereof Download PDFInfo
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- CN103667917A CN103667917A CN201310550272.4A CN201310550272A CN103667917A CN 103667917 A CN103667917 A CN 103667917A CN 201310550272 A CN201310550272 A CN 201310550272A CN 103667917 A CN103667917 A CN 103667917A
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Abstract
The invention relates to a high-temperature-resistant low-carbon steel material which contains the following chemical components in percentage by mass: 0.1-0.25% of carbon, 4.0-4.5% of zinc, 1.3-1.5% of aluminum, 2.6-2.9% of copper, 3.0-3.2% of magnesium, 0.6-0.8% of Si, 6.3-6.5% of Mn, 0.005-0.008% of B, 0.03-0.05% of Ti, at most 0.030% of P, at most 0.030% of S and the balance of iron. By using the raw material combination of the aluminum, magnesium and the like, the proportion, production technique and feed sequence are reasonably arranged, so that the formed alloy material has the characteristics of excellent high-temperature corrosion resistance, no scale at high temperature, high ductility, high plasticity, high strength, high hardness, favorable abrasion resistance and the like. Part of scrap iron is used as the raw material, thereby enhancing the quality stability and uniformity of the alloy. The material is used in cast parts exposed in a high-temperature environment for a long time. The refining agent is added to lower the porosity by 1-2 degrees.
Description
Technical field
The present invention relates to metallic substance preparation field, relate in particular to a kind of high temperature resistant low-carbon steel material and preparation method thereof.
Background technology
The development of steel alloy has had the history of more than 100 year, up to the present, diversified steel alloy is employed industrial, mainly contain with Types Below: quenched and tempered steel, spring steel, tool steel, rapid steel, die steel, high, normal, basic carbon alloy steel etc., so far, although steel alloy technology is greatly developed, but, still have a lot of problems to exist, as fastness to rubbing, hardness, rustless property, corrosion resistance nature, high and low temperature resistance, fragility, toughness, costs etc. can not be taken into account, 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 high temperature resistant low-carbon steel material and preparation method thereof, this alloy material has advantages of high-temperature corrosion resistance, good toughness, plasticity-is good, intensity is high, hardness is high.
Technical scheme of the present invention is as follows:
A high temperature resistant low-carbon steel material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.1-0.25, zinc 4.0-4.5, aluminium 1.3-1.5, copper 2.6-2.9, magnesium 3.0-3.2, Si0.6-0.8, Mn6.3-6.5, B0.005-0.008, Ti0.03-0.05, P≤0.030, S≤0.030, surplus are iron.
The production method of described high temperature resistant low-carbon steel material, is characterized in that:
(1), the pig iron and scrap iron are dropped in stove and melt and originate as ferrous substrate in 1:2 ratio; Carry out desulfurization, deoxidation, alloying, the refining of employing refining agent, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) magnesium, zinc, Ti; (2), aluminium, Si, copper; (3) other remaining component; The timed interval that each batch drops into element is 8-10 minute, after feeding intake, stirs.
The production method of described high temperature resistant low-carbon steel material, is characterized in that: described casting postheat treatment is: first by room temperature, with 200-230 ℃/h of speed, be warming up to 905-920 ℃, insulation 3-4 hour; With 150-170 ℃/h of speed, be cooled to 610-630 ℃ again, insulation 30-60 minute; With 100-120 ℃/h of speed, be cooled to 320-340 ℃ again, insulation 2-3 hour; With 150-170 ℃/h of speed, be warming up to 500-520 ℃ again, 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 3-4, clay 13-16, light calcium carbonate 2-3, silicon-dioxide 2-3, zinc oxide 1-2, wollastonite powder 3-4, magnesium hydroxide 10-12, diatomite 4-5, aluminium hydroxide 8-10, jade powder 3-4, montmorillonite 1-2, BaCO3 3-4, BaF
22-3; 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 is by using the material combination such as aluminium, magnesium, proportioning and production technique are rationally set, input order is rationally set, and the alloy material of formation has excellent high-temperature corrosion resistance, high temperature non-scale, and toughness and plasticity-are good, intensity and the feature such as hardness is high, wear resistance is good; And use part scrap iron as raw material, carry heavy alloyed steady quality homogeneous; The present invention is used in the long-term forged part in hot environment.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, is controlled effectively, and 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 high temperature resistant low-carbon steel material, chemical element composition and mass percent thereof that it contains are: carbon 0.1-0.25, zinc 4.0-4.5, aluminium 1.3-1.5, copper 2.6-2.9, magnesium 3.0-3.2, Si0.6-0.8, Mn6.3-6.5, B0.005-0.008, Ti0.03-0.05, P≤0.030, S≤0.030, surplus are iron.
The production method of described high temperature resistant low-carbon steel material:
(1), the pig iron and scrap iron are dropped in stove and melt and originate as ferrous substrate in 1:2 ratio; Carry out desulfurization, deoxidation, alloying, the refining of employing refining agent, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) magnesium, zinc, Ti; (2), aluminium, Si, copper; (3) other remaining component; The timed interval that each batch drops into element is 9 minutes, after feeding intake, stirs.
The production method of described high temperature resistant low-carbon steel material: described casting postheat treatment is: be first warming up to 910 ℃ by room temperature with 220 ℃/h of speed, be incubated 3.4 hours; With 160 ℃/h of speed, be cooled to 620 ℃ again, be incubated 50 minutes; With 110 ℃/h of speed, be cooled to 330 ℃ again, be incubated 2.5 hours; With 160 ℃/h of speed, be warming up to 510 ℃ again, 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 4, clay 13, light calcium carbonate 2, silicon-dioxide 3, zinc oxide 1, wollastonite powder 4, magnesium hydroxide 12, diatomite 4, aluminium hydroxide 8, jade powder 3, montmorillonite 2, BaCO3 3, BaF
22; 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.
The mechanical property of the high temperature resistant low-carbon steel material of the present invention is: tensile strength 1289MPa, yield strength 787MPa, unit elongation 15.6%, relative reduction in area 35%, impact absorbing energy 54J, impelling strength 63J/cm2, hardness 287HB.
Claims (4)
1. a high temperature resistant low-carbon steel material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.1-0.25, zinc 4.0-4.5, aluminium 1.3-1.5, copper 2.6-2.9, magnesium 3.0-3.2, Si0.6-0.8, Mn6.3-6.5, B0.005-0.008, Ti0.03-0.05, P≤0.030, S≤0.030, surplus are iron.
2. the production method of high temperature resistant low-carbon steel material according to claim 1, is characterized in that:
(1), the pig iron and scrap iron are dropped in stove and melt and originate as ferrous substrate in 1:2 ratio; Carry out desulfurization, deoxidation, alloying, the refining of employing refining agent, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) magnesium, zinc, Ti; (2), aluminium, Si, copper; (3) other remaining component; The timed interval that each batch drops into element is 8-10 minute, after feeding intake, stirs.
3. the production method of high temperature resistant low-carbon steel material according to claim 2, is characterized in that: described casting postheat treatment is: first by room temperature, with 200-230 ℃/h of speed, be warming up to 905-920 ℃, insulation 3-4 hour; With 150-170 ℃/h of speed, be cooled to 610-630 ℃ again, insulation 30-60 minute; With 100-120 ℃/h of speed, be cooled to 320-340 ℃ again, insulation 2-3 hour; With 150-170 ℃/h of speed, be warming up to 500-520 ℃ again, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method of high temperature resistant low-carbon steel material 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 3-4, clay 13-16, light calcium carbonate 2-3, silicon-dioxide 2-3, zinc oxide 1-2, wollastonite powder 3-4, magnesium hydroxide 10-12, diatomite 4-5, aluminium hydroxide 8-10, jade powder 3-4, montmorillonite 1-2, BaCO3 3-4, BaF
22-3; 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478775A (en) * | 2015-12-15 | 2016-04-13 | 苏州鑫德杰电子有限公司 | Alloy material for instrument and preparation method of alloy material |
| CN110079746A (en) * | 2019-04-28 | 2019-08-02 | 徐州箱桥机械有限公司 | High-hardness high temperature resistant low-carbon steel material and its production technology for internal gear production |
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| JP2001355044A (en) * | 2000-06-12 | 2001-12-25 | Nippon Steel Corp | High strength steel sheet excellent in formability and hole expansibility, and its production method |
| CN1966754A (en) * | 2004-11-19 | 2007-05-23 | 株式会社神户制钢所 | Highly corrosion resistant steel |
| CN1989267A (en) * | 2004-07-27 | 2007-06-27 | 新日本制铁株式会社 | High young's modulus steel plate, zinc hot dip galvanized steel sheet using the same, alloyed zinc hot dip galvanized steel sheet, high young's modulus steel pipe, and method for production thereof |
| CN102534406A (en) * | 2011-12-07 | 2012-07-04 | 铜陵安东铸钢有限责任公司 | Medium manganese steel and preparation method thereof |
| CN102876992A (en) * | 2012-10-24 | 2013-01-16 | 章磊 | High-strength corrosion-resisting steel material and manufacturing method thereof |
| CN103817312A (en) * | 2014-02-13 | 2014-05-28 | 昆明市宜良化工设备铸造厂 | Wearproof composite lining plate and production method thereof |
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2013
- 2013-11-08 CN CN201310550272.4A patent/CN103667917A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001355044A (en) * | 2000-06-12 | 2001-12-25 | Nippon Steel Corp | High strength steel sheet excellent in formability and hole expansibility, and its production method |
| CN1989267A (en) * | 2004-07-27 | 2007-06-27 | 新日本制铁株式会社 | High young's modulus steel plate, zinc hot dip galvanized steel sheet using the same, alloyed zinc hot dip galvanized steel sheet, high young's modulus steel pipe, and method for production thereof |
| CN1966754A (en) * | 2004-11-19 | 2007-05-23 | 株式会社神户制钢所 | Highly corrosion resistant steel |
| CN102534406A (en) * | 2011-12-07 | 2012-07-04 | 铜陵安东铸钢有限责任公司 | Medium manganese steel and preparation method thereof |
| CN102876992A (en) * | 2012-10-24 | 2013-01-16 | 章磊 | High-strength corrosion-resisting steel material and manufacturing method thereof |
| CN103817312A (en) * | 2014-02-13 | 2014-05-28 | 昆明市宜良化工设备铸造厂 | Wearproof composite lining plate and production method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478775A (en) * | 2015-12-15 | 2016-04-13 | 苏州鑫德杰电子有限公司 | Alloy material for instrument and preparation method of alloy material |
| CN110079746A (en) * | 2019-04-28 | 2019-08-02 | 徐州箱桥机械有限公司 | High-hardness high temperature resistant low-carbon steel material and its production technology for internal gear production |
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Application publication date: 20140326 |