CN1039268A - Iron-manganese-aluminium-carbon austenitic nonmagnetic steel and low-temperature steel - Google Patents
Iron-manganese-aluminium-carbon austenitic nonmagnetic steel and low-temperature steel Download PDFInfo
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- CN1039268A CN1039268A CN 89104759 CN89104759A CN1039268A CN 1039268 A CN1039268 A CN 1039268A CN 89104759 CN89104759 CN 89104759 CN 89104759 A CN89104759 A CN 89104759A CN 1039268 A CN1039268 A CN 1039268A
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- steel
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- nonmagnetic
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 85
- 239000010959 steel Substances 0.000 title claims abstract description 85
- -1 Iron-manganese-aluminium-carbon Chemical compound 0.000 title description 3
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 7
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 7
- 229910018657 Mn—Al Inorganic materials 0.000 claims description 4
- 238000003723 Smelting Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000010891 electric arc Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 abstract description 12
- 230000035699 permeability Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000011572 manganese Substances 0.000 abstract description 5
- 229910052748 manganese Inorganic materials 0.000 abstract description 4
- 238000007669 thermal treatment Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 239000006148 magnetic separator Substances 0.000 abstract description 3
- 229910000734 martensite Inorganic materials 0.000 abstract description 3
- 229910021652 non-ferrous alloy Inorganic materials 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 241000921313 Phyllopodium Species 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Iron-manganese of the present invention-aluminium-carbon austenitic nonmagnetic steel and low-temperature steel is by Mn, C stable austenite structure, and Al suppresses γ → ε martensitic transformation, make new steel grade of the present invention have extremely low magnetic permeability with in the high tenacity of 77K and above temperature thereof.New steel grade of the present invention can replace 1Cr18Ni9Ti and non-ferrous alloy to be used for the not manufacturings of magnetic conductive part of electric installation such as transformer, magnetic separator and motor as nonmagnetic steel.Can replace 1Cr18Ni9Ti and 9%Ni steel to be used for the mechanical part of the cyrogenic equipment of 77K and above temperature thereof as low-temperature steel, as container, valve etc.But price of the present invention is lower than 1Cr18Ni9Ti, and thermal treatment process and weldprocedure are simple more than the 9%Ni steel.
Description
The invention belongs to a kind of novel nonmagnetic steel and low-temperature steel, is to be used for making the not ideal material of the low temperature resistant member in magnetic conductive part or the cyrogenic equipment of electric installation.
Make transformer, magnetic separator, motor, electric furnace instrument and other equipment of in magnetic field, working at present, needing to adopt very low nonmagnetic steel or the non-ferrous alloy of magnetic permeability to make not magnetic conductive part.And it is general both at home and abroad many with 1Cr18Ni9Ti stainless steel, aluminium alloy and copper alloy, wherein the consumption maximum of austenitic stainless steel.But the stainless steel price is more expensive, and contains more rare Ni, Cr element.If use aluminium alloy, then there are problems such as intensity is lower, weldprocedure complexity.In the cyrogenic equipment of making 77K and above temperature thereof, adopt 1Cr18Ni9Ti or 9%Ni steel usually, and the weldprocedure of 9%Ni steel and thermal treatment process are all complicated.The Soviet Union once developed low owing to the high manganese of carbon, former its welding property of a kind of nonmagnetic steel 45Mn17Al3, the 77K low-temperature flexibility is all relatively poor.Inventor Zhang Yansheng once developed a kind of 15Mn26Al4 low-temperature steel (wherein: C-0.15%, Mn-26%, Al-4%, Fe surplus, the alloy content in the application's book is all used weight percent).And be published in " Acta Metallurgica Sinica " in September, 1977,3 volumes, 3 phases, once used pseudonym phyllopodium stone.So the contriver of this invention once by Dalian scientific information research Dialog system retrieval World Patent Index database and " metal digest " database, did not find the patent of Fe-Mn-Al nonmagnetic steel and low-temperature steel in 1987.Only find 13 pieces of the non-patent papers relevant with the Metallkunde fundamental research of Fe-Mn-Al austenitic steel, what wherein the inventor delivered has 4 pieces.Though the low-temperature steel 15Mn26Al4 that the inventor once developed has low magnetic permeability and good low-temperature flexibility because Mn, Al content are higher, give smelt, steel ingot hot-work and welding bring certain difficulty, and cost is higher, is difficult for promoting the use of.In order to address the above problem novel nonmagnetic steel and the low-temperature steel of development is very necessary.
In view of existing problem in the above-mentioned existing technology, the object of the present invention is to provide a kind of new iron-manganese-aluminium-carbon austenitic nonmagnetic steel and low-temperature steel.By the preferably combination of alloying constituent Mn, Al, C, make its have stable austenite, low magnetic permeability, high low-temperature flexibility, proper intensity, preferably welding property, smelting performance and steel ingot hot workability, to obtain to carry out the desired composite technology performance of suitability for industrialized production.Mn among the present invention, C stable austenite structure, Al suppress γ-∈ martensitic transformation, reduce work hardening, improve cutting ability and improve the solidity to corrosion of steel.So that new steel grade of the present invention have extremely low magnetic permeability with in the high tenacity of 77K and above temperature thereof.New steel grade of the present invention can replace 1Cr18Mi9Ti and non-ferrous alloy as nonmagnetic steel, is used for the not manufacturings of magnetic conductive part of electric installation such as transformer, magnetic separator and motor.If can replace 1Cr18Ni9Ti and 9%Ni steel to be used for the mechanical part of the cyrogenic equipment of 77K and above temperature thereof as low-temperature steel, as container, valve etc.But price of the present invention is lower than 1Cr18Ni9Ti, and thermal treatment process and weldprocedure are simple more than the 9%Ni steel again.
Content of the present invention and implementation method comprise the composition and the production technique of nonmagnetic steel and low-temperature steel, and existing division is as follows:
1. iron-manganese of the present invention-aluminium-carbon austenitic nonmagnetic steel and low-temperature steel contain Mn19～21%, Al2.3～3.2%, C0.25～0.33% Si≤0.7%, S≤0.05%, P≤0.04%, Fe surplus.
2. the salient features of nonmagnetic steel of the present invention and low-temperature steel is listed in following two tables:
Table 1 room temperature physicals
| Magnetic permeability μ | The electricalresistivity | Density γ | Elastic modulus E | Mean thermal expansion coefficients |
| 4π×10 －7H／m | (μΩ·cm) | (g/cm 3) | (X10 3MN/m 2) | (10 -6/K) |
| 1.005 | 97.3 | 7.59 | 182.45 | 9.5 |
Table 2 mechanical property
| Temperature | σ 0.2MN/m 2 | σ BMN/m 2 | δ % | 4% | a KKJ/m 2 | Hardness HB |
| Room temperature | 282～297 | 635～655 | 63～66 | 70～75 | 2900～3000 | ～144 |
| 77K | 633 | 1190 | 79 | 58 | 1700～1900 | -- |
3. nonmagnetic steel of the present invention and low-temperature steel are stable face-centred cubic structure in 77～650K temperature range.
4. the preparation method of nonmagnetic steel of the present invention and low-temperature steel is to adopt the electric arc furnace oxidation style to smelt (or induction furnace smelting), alkaline melt cinder or solid flux shielding to be cast into ingot.The steel ingot Heating temperature is about 1473K, is processed into section bar in 1423～1073K temperature range.
5. nonmagnetic steel of the present invention and its solid solubility temperature of low-temperature steel are 1273K ± 50K.
6. nonmagnetic steel of the present invention and low-temperature steel, can adopt Chromiumnickel Austenite Stainless Steel welding rod or Fe-Mn-Al Steel Electrode carry out this steel grade between and the welding of this steel grade and soft steel.
Iron-manganese of the present invention-aluminium-carbon austenitic nonmagnetic steel and low-temperature steel compared with existing steel grade 1Cr18Ni9Ti and 9%Ni steel, and its principal feature is:
(1). when new steel grade of the present invention is used as nonmagnetic steel, with 1Cr18Ni9Ti relatively, intensity and plasticity are higher, stabilization of austenite is good, magnetic permeability is low and the resistivity height to be eddy-current loss little.And price only is about 50% of 1Cr18Ni9Ti, has saved more expensive simultaneously and rare Cr, Ni element.
(2). comparing with 1Cr18Ni9Ti when new steel grade of the present invention is used as low-temperature steel has the advantages that intensity is higher, low-temperature flexibility is higher, stabilization of austenite is good (1Cr18Ni9Ti is when low temperature deformation, γ → α martensitic transformation will take place, reduce toughness), and price only is about 50% of 1Cr18Ni9Ti.But the corrosion resistance nature of new steel grade of the present invention is lower than 1Cr18Ni9Ti, only is suitable for making the parts that do not contact strong corrosive media.
(3). when new steel grade of the present invention is used as low-temperature steel, compare with the 9%Ni steel, the low-temperature flexibility of steel grade of the present invention is higher than the 9%Ni steel, and thermal treatment process and weldprocedure are simple, thereby can reduce the cost and the difficulty of producing apparatus greatly.But the yield strength of new steel grade of the present invention is 60% of a 9%Ni steel only, so be not suitable for the occasion that needs Extra High Strength.
According to content of the present invention and implementation method, its specific embodiment is as follows:
In the production of certain metallurgical works, according to production technique and alloying constituent described in the specification sheets of the present invention, be that raw material is smelted with the electric arc oxidation style with steel scrap, the pig iron, manganese metal and low, mid-carbon fe-mn, industrial aluminium ingot, the alkali solution flux shielding is cast into ingot.The chemical ingredients of being made steel is Mn20.3%, Al2.7%, C0.3% Si0.2%, Fe surplus.About steel ingot Heating temperature 1473K.Through rolling or hammer cogging, produce 18mm heavy-gauge sheeting and bar and be used for certain transformer factory for 10 tons.Quality with the transformer that the present invention was produced reaches International Electrotechnical Commission (IEC) standard.
Claims (4)
1, iron-manganese of the present invention-aluminium-carbon third constellations body nonmagnetic steel difficult to understand and low-temperature steel is characterized in that: contain Mn19～21%, Al2.3～3.2%, C0.25～0.33%, Si≤0.7%, S≤0.05%, P≤0.04%, Fe surplus.
2,, it is characterized in that adopting the smelting of electric arc furnace oxidation style (or induction furnace smelting), alkali solution flux shielding ingot casting, steel ingot Heating temperature to be about 1473K, between the 1423-1073K temperature, to be processed into section bar according to the preparation method of described nonmagnetic steel of claim 1 and low-temperature steel.
3, nonmagnetic steel according to claim 1 and 2 and low-temperature steel is characterized in that its solid solubility temperature is 1273K ± 50K.
4, according to claim 2 or 3 described nonmagnetic steel and low-temperature steels, it is characterized in that adopting Chromiumnickel Austenite Stainless Steel welding rod or Fe-Mn-Al Steel Electrode carry out this steel grade between and the welding of this steel grade and soft steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89104759 CN1013123B (en) | 1989-07-08 | 1989-07-08 | Fe-mn-al-c austenite containing nonmagnetic and low-temp. steels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89104759 CN1013123B (en) | 1989-07-08 | 1989-07-08 | Fe-mn-al-c austenite containing nonmagnetic and low-temp. steels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1039268A true CN1039268A (en) | 1990-01-31 |
| CN1013123B CN1013123B (en) | 1991-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89104759 Expired CN1013123B (en) | 1989-07-08 | 1989-07-08 | Fe-mn-al-c austenite containing nonmagnetic and low-temp. steels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1013123B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100378331C (en) * | 2006-09-30 | 2008-04-02 | 刘朝晖 | Non-magnetic alloy balance block for compressor use |
| CN1996690B (en) * | 2006-01-05 | 2010-07-28 | 凤凰科技集团有限公司 | An energy-saving vibration prevention hammer |
| CN103386347A (en) * | 2013-07-31 | 2013-11-13 | 西安交通大学 | Low-temperature ball-milling experimental apparatus |
| CN108796383A (en) * | 2017-04-27 | 2018-11-13 | 宝山钢铁股份有限公司 | A kind of titaniferous high-intensity and high-tenacity nonmagnetic steel and its manufacturing method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1996689B (en) * | 2006-01-05 | 2010-12-08 | 凤凰科技集团有限公司 | An energy-saving suspending wire clamp |
-
1989
- 1989-07-08 CN CN 89104759 patent/CN1013123B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1996690B (en) * | 2006-01-05 | 2010-07-28 | 凤凰科技集团有限公司 | An energy-saving vibration prevention hammer |
| CN100378331C (en) * | 2006-09-30 | 2008-04-02 | 刘朝晖 | Non-magnetic alloy balance block for compressor use |
| CN103386347A (en) * | 2013-07-31 | 2013-11-13 | 西安交通大学 | Low-temperature ball-milling experimental apparatus |
| CN108796383A (en) * | 2017-04-27 | 2018-11-13 | 宝山钢铁股份有限公司 | A kind of titaniferous high-intensity and high-tenacity nonmagnetic steel and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1013123B (en) | 1991-07-10 |
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