CN106167871A - A kind of rustless steel foundry alloy material and preparation method thereof - Google Patents
A kind of rustless steel foundry alloy material and preparation method thereof Download PDFInfo
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- CN106167871A CN106167871A CN201610534887.1A CN201610534887A CN106167871A CN 106167871 A CN106167871 A CN 106167871A CN 201610534887 A CN201610534887 A CN 201610534887A CN 106167871 A CN106167871 A CN 106167871A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C35/00—Master alloys for iron or steel
- C22C35/005—Master alloys for iron or steel based on iron, e.g. ferro-alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
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Abstract
The invention discloses a kind of rustless steel foundry alloy material and preparation method thereof, be Fe and impurity including C≤0.04%, Cr:10.50%～12.00%, Ni:7.50%～9.00%, Mo:2.00%～3.50%, Co:4.00%～6.00%, Mn:0.10%～0.70%, surplus；Its preparation method, takes the melting in induction furnace of required element, and solution pours into consutrode；By consutrode remelting refining in electroslag furnace, remelting becomes ESR ingot；ESR ingot heats forged is made rod iron；After being forged by rod iron, air cooling is to room temperature；Rod iron is processed, corresponding mechanical property test.This alloy material mechanical property is: under tensile test at room temperature, tensile strength Rm of material >=1200Mpa；Yield strength Rm >=1100Mpa；Percentage elongation A >=10.0%；Contraction percentage of area Z >=40.0%, impact test Aku >=40J.
Description
Technical field
The present invention relates to a kind of alloy material and preparation method thereof, be specially a kind of rustless steel foundry alloy material and preparation thereof
Method, belongs to alloy material applied technical field.
Background technology
Rustless steel is the abbreviation of stainless acid resistant steel, the weak corrosive medium such as resistance to air, steam, water or have the steel grade of rustless property
It is referred to as rustless steel；And the steel grade that resistance to chemical attack medium (chemical etching such as acid, alkali, salt) corrodes is referred to as acid resisting steel.Due to two
Person's difference in chemical composition and make their corrosion resistance different, common stainless steel the most not resistant to chemical media corrodes, and resistance to
Acid steel the most generally individually has rustless property, and stainless steel alloy plays an important role for development Aeronautics and Astronautics industry.And existing conjunction
Gold copper-base alloy tensile strength is less than 1100Mpa less than 1200Mpa, yield strength；Percentage elongation less than 10.0%, the contraction percentage of area is less than
40.0%, and manufacturing cost is high, manufactures complexity.
Summary of the invention
The purpose of the present invention is that provides a kind of rustless steel foundry alloy material and preparation thereof to solve the problems referred to above
Method, meets the use requirement under complex work environment.
The present invention is achieved through the following technical solutions above-mentioned purpose, a kind of rustless steel foundry alloy material and preparation side thereof
Method, in terms of percentage by weight %, including C≤0.04%, Cr:10.50%～12.00%, Ni:7.50%～9.00%, Mo:
2.00%～3.50%, Co:4.00%～6.00%, Mn:0.10%～0.70%, surplus are Fe and inevitable impurity；
Its preparation method, step is as follows:
Step A, take the melting in vaccum sensitive stove of required element, smelting temperature 1550～1570 DEG C；Fusion process regulates
The content of each element so that it is weight ratio meets design requirement, the content controlling impurity element is the lowest, and solution pours into from power consumption
Pole；
Step B, the consutrode remelting refining in electroslag furnace step A poured into, remelting becomes ESR ingot；
Step C, that the ESR ingot heats forged of step B is made rod iron, step and technological parameter is as follows: rod iron is heated to 1200
～1220 DEG C, after being incubated 30 hours, stove is cooled to 1150～1170 DEG C of insulations 2～3 hours, starts forging；
Step D, the rod iron of step C is forged after air cooling to room temperature；
Step E, the rod iron surface of step D is processed, finished product rod iron surface is carried out car optical processing, eliminates surface defect and also make steel
Rod size, shape, surface quality meet design requirement, prepare finished product rod iron；
Step F, by pick test mechanical property on the finished product rod iron of step E, carry out the mechanical property test of correspondence.
Preferably, the mechanical property test of described step F is as follows:
1) homogenize process, and first finished product rod iron is placed on temperature is in 1150 ± 10 DEG C, and the insulation laggard line space of 3h is cold；
2) crystal grain micronization processes, by step 1) in finished product rod iron to be placed on temperature be in 950 DEG C, the insulation laggard line space of 1h is cold；
3) solution treatment, by step 2) in finished product rod iron to be placed on temperature be in 800 DEG C, the insulation laggard line space of 1h is cold；
4) cold treatment, by step 3) in finished product rod iron be placed on temperature in-73 DEG C, return back to room in atmosphere after insulation 2h
Temperature；
5) Ageing Treatment, by step 4) in finished product rod iron to be placed on temperature be in 480 DEG C, the insulation laggard line space of 3h is cold.
Preferably, described impurity is: in terms of percentage by weight %, Si≤0.55%, P≤0.010%, S≤0.005%, V
≤ 0.30%, Nb≤0.30%.
Preferably, the step being melt into ESR ingot in described step B and technological parameter are as follows:
1), slag system: the ratio CaF of each content2:Al2O3: CaO:MgO=60:25:10:5 (%), making the quantity of slag is 36Kg；
2), by 1) in slag system be electrolysed, its voltage is 56V ± 2V；Electric current is 7500 ± 300A.
The invention has the beneficial effects as follows: the alloy material of this kind of rustless steel foundry alloy material and preparation method thereof preparation, its
Mechanical property is: under room temperature (20 DEG C) tension test, tensile strength Rm of material >=1200Mpa；Yield strength Rm >=
1100Mpa；Percentage elongation A >=10.0%；Contraction percentage of area Z >=40.0%, impact test Aku >=40J, the alloy that the method manufactures
The content of its impurity element of material is low, thus improves the life-span of the product that this kind of alloy manufactures, and has good economic benefit and society
Meeting benefit, is suitable for promoting the use of.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Embodiment one:
A kind of rustless steel foundry alloy material and preparation method thereof, in terms of percentage by weight %, including C≤0.04%, Cr:
10.50%～12.00%, Ni:7.50%～9.00%, Mo:2.00%～3.50%, Co:4.00%～6.00%, Mn:
0.10%～0.70%, surplus is Fe and inevitable impurity；
Its preparation method, step is as follows:
Step A, take the melting in vaccum sensitive stove of required element, smelting temperature 1550～1570 DEG C；Fusion process regulates
The content of each element so that it is weight ratio meets design requirement, the content controlling impurity element is the lowest, and solution pours into from power consumption
Pole；
Step B, the consutrode remelting refining in electroslag furnace step A poured into, remelting becomes ESR ingot；
Step C, that the ESR ingot heats forged of step B is made rod iron, step and technological parameter is as follows: rod iron is heated to 1200
～1220 DEG C, after being incubated 30 hours, stove is cooled to 1150～1170 DEG C of insulations 2 hours, starts forging；
Step D, the rod iron of step C is forged after air cooling to room temperature；
Step E, the rod iron surface of step D is processed, finished product rod iron surface is carried out car optical processing, eliminates surface defect and also make steel
Rod size, shape, surface quality meet design requirement, prepare finished product rod iron；
Step F, by pick test mechanical property on the finished product rod iron of step E, carry out the mechanical property test of correspondence.
The mechanical property test of described step F is as follows:
1) homogenize process, and first finished product rod iron is placed on temperature is in 1150 DEG C, and the insulation laggard line space of 3h is cold；
2) crystal grain micronization processes, by step 1) in finished product rod iron to be placed on temperature be in 950 DEG C, the insulation laggard line space of 1h is cold；
3) solution treatment, by step 2) in finished product rod iron to be placed on temperature be in 800 DEG C, the insulation laggard line space of 1h is cold；
4) cold treatment, by step 3) in finished product rod iron be placed on temperature in-73 DEG C, return back to room in atmosphere after insulation 2h
Temperature；
5) Ageing Treatment, by step 4) in finished product rod iron to be placed on temperature be in 480 DEG C, the insulation laggard line space of 3h is cold.
Described impurity is: in terms of percentage by weight %, Si≤0.55%, P≤0.010%, S≤0.005%, V≤
0.30%, Nb≤0.30%.
The step being melt into ESR ingot and technological parameter in described step B are as follows:
1), slag system: the ratio CaF of each content2:Al2O3: CaO:MgO=60:25:10:5 (%), making the quantity of slag is 36Kg；
2), by 1) in slag system be electrolysed, its voltage is 56V ± 2V；Electric current is 7500 ± 300A.
Embodiment two:
A kind of rustless steel foundry alloy material and preparation method thereof, in terms of percentage by weight %, including C≤0.04%, Cr:
10.50%～12.00%, Ni:7.50%～9.00%, Mo:2.00%～3.50%, Co:4.00%～6.00%, Mn:
0.10%～0.70%, surplus is Fe and inevitable impurity；
Its preparation method, step is as follows:
Step A, take the melting in vaccum sensitive stove of required element, smelting temperature 1550～1570 DEG C；Fusion process regulates
The content of each element so that it is weight ratio meets design requirement, the content controlling impurity element is the lowest, and solution pours into from power consumption
Pole；
Step B, the consutrode remelting refining in electroslag furnace step A poured into, remelting becomes ESR ingot；
Step C, that the ESR ingot heats forged of step B is made rod iron, step and technological parameter is as follows: rod iron is heated to 1200
～1220 DEG C, after being incubated 30 hours, stove is cooled to 1150～1170 DEG C of insulations 3 hours, starts forging；
Step D, the rod iron of step C is forged after air cooling to room temperature；
Step E, the rod iron surface of step D is processed, finished product rod iron surface is carried out car optical processing, eliminates surface defect and also make steel
Rod size, shape, surface quality meet design requirement, prepare finished product rod iron；
Step F, by pick test mechanical property on the finished product rod iron of step E, carry out the mechanical property test of correspondence.
The mechanical property test of described step F is as follows:
1) homogenize process, and first finished product rod iron is placed on temperature is in 1140 DEG C, and the insulation laggard line space of 3h is cold；
2) crystal grain micronization processes, by step 1) in finished product rod iron to be placed on temperature be in 950 DEG C, the insulation laggard line space of 1h is cold；
3) solution treatment, by step 2) in finished product rod iron to be placed on temperature be in 800 DEG C, the insulation laggard line space of 1h is cold；
4) cold treatment, by step 3) in finished product rod iron be placed on temperature in-73 DEG C, return back to room in atmosphere after insulation 2h
Temperature；
5) Ageing Treatment, by step 4) in finished product rod iron to be placed on temperature be in 480 DEG C, the insulation laggard line space of 3h is cold.
Described impurity is: in terms of percentage by weight %, Si≤0.55%, P≤0.010%, S≤0.005%, V≤
0.30%, Nb≤0.30%.
The step being melt into ESR ingot and technological parameter in described step B are as follows:
1), slag system: the ratio CaF of each content2:Al2O3: CaO:MgO=60:25:10:5 (%), making the quantity of slag is 36Kg；
2), by 1) in slag system be electrolysed, its voltage is 56V ± 2V；Electric current is 7500 ± 300A.
Embodiment three:
A kind of rustless steel foundry alloy material and preparation method thereof, in terms of percentage by weight %, including C≤0.04%, Cr:
10.50%～12.00%, Ni:7.50%～9.00%, Mo:2.00%～3.50%, Co:4.00%～6.00%, Mn:
0.10%～0.70%, surplus is Fe and inevitable impurity；
Its preparation method, step is as follows:
Step A, take the melting in vaccum sensitive stove of required element, smelting temperature 1550～1570 DEG C；Fusion process regulates
The content of each element so that it is weight ratio meets design requirement, the content controlling impurity element is the lowest, and solution pours into from power consumption
Pole；
Step B, the consutrode remelting refining in electroslag furnace step A poured into, remelting becomes ESR ingot；
Step C, that the ESR ingot heats forged of step B is made rod iron, step and technological parameter is as follows: rod iron is heated to 1200
～1220 DEG C, after being incubated 30 hours, stove is cooled to 1150～1170 DEG C of insulations 2.5 hours, starts forging；
Step D, the rod iron of step C is forged after air cooling to room temperature；
Step E, the rod iron surface of step D is processed, finished product rod iron surface is carried out car optical processing, eliminates surface defect and also make steel
Rod size, shape, surface quality meet design requirement, prepare finished product rod iron；
Step F, by pick test mechanical property on the finished product rod iron of step E, carry out the mechanical property test of correspondence.
The mechanical property test of described step F is as follows:
1) homogenize process, and first finished product rod iron is placed on temperature is in 1160 DEG C, and the insulation laggard line space of 3h is cold；
2) crystal grain micronization processes, by step 1) in finished product rod iron to be placed on temperature be in 950 DEG C, the insulation laggard line space of 1h is cold；
3) solution treatment, by step 2) in finished product rod iron to be placed on temperature be in 800 DEG C, the insulation laggard line space of 1h is cold；
4) cold treatment, by step 3) in finished product rod iron be placed on temperature in-73 DEG C, return back to room in atmosphere after insulation 2h
Temperature；
5) Ageing Treatment, by step 4) in finished product rod iron to be placed on temperature be in 480 DEG C, the insulation laggard line space of 3h is cold.
Described impurity is: in terms of percentage by weight %, Si≤0.55%, P≤0.010%, S≤0.005%, V≤
0.30%, Nb≤0.30%.
The step being melt into ESR ingot and technological parameter in described step B are as follows:
1), slag system: the ratio CaF of each content2:Al2O3: CaO:MgO=60:25:10:5 (%), making the quantity of slag is 36Kg；
2), by 1) in slag system be electrolysed, its voltage is 56V ± 2V；Electric current is 7500 ± 300A.
Rustless steel prepared by the material prepared according to embodiment one, embodiment two and embodiment three and corresponding process method is female
Alloy material, tests through normal temperature mechanical property, and result shows that its mechanical property is fully achieved design requirement, and result of the test is as follows:
Room temperature tensile:
| Rm | Rp0.2 | A | Z | AKU |
| Mpa | Mpa | % | % | J |
| 1217 | 1121 | 20 | 80 | 234/236 |
| 1206 | 1120 | 21 | 81 | 234/240 |
| 1231 | 1138 | 20 | 80 | 224/232 |
| 1225 | 1130 | 21 | 81 | 218/230 |
Alloy material through inspection said method manufacture is finished product.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention.Should not be considered as limiting involved claim by any reference in claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (4)
1. rustless steel foundry alloy material and preparation method thereof, it is characterised in that: by weight percentage, including C≤
0.04%, Cr:10.50% ~ 12.00%, Ni:7.50% ~ 9.00%, Mo:2.00% ~ 3.50%, Co:4.00% ~ 6.00%, Mn:0.10% ~
0.70%, surplus is Fe and inevitable impurity；
Its preparation method, step is as follows:
Step A, take the melting in vaccum sensitive stove of required element, smelting temperature 1550 ~ 1570 DEG C；In fusion process, regulation is each
The content of element so that it is weight ratio meets design requirement, the content controlling impurity element is the lowest, and solution pours into from power consumption
Pole；
Step B, the consutrode remelting refining in electroslag furnace step A poured into, remelting becomes ESR ingot；
Step C, that the ESR ingot heats forged of step B is made rod iron, step and technological parameter is as follows: rod iron is heated to 1200
~ 1220 DEG C, after being incubated 30 hours, stove is cooled to 1150 ~ 1170 DEG C of insulations 2 ~ 3 hours, starts forging；
Step D, the rod iron of step C is forged after air cooling to room temperature；
Step E, the rod iron surface of step D is processed, finished product rod iron surface is carried out car optical processing, eliminates surface defect and also make steel
Rod size, shape, surface quality meet design requirement, prepare finished product rod iron；
Step F, by pick test mechanical property on the finished product rod iron of step E, carry out the mechanical property test of correspondence.
A kind of rustless steel foundry alloy material the most according to claim 1 and preparation method thereof, it is characterised in that: described step
The mechanical property test of F is as follows:
1) homogenize process, and first finished product rod iron is placed on temperature is in 1150 ± 10 DEG C, and the insulation laggard line space of 3h is cold；
2) crystal grain micronization processes, the finished product rod iron in step 1) is placed on temperature is in 950 DEG C, and the insulation laggard line space of 1h is cold；
3) solution treatment, by step 2) in finished product rod iron to be placed on temperature be in 800 DEG C, the insulation laggard line space of 1h is cold；
4) cold treatment, is placed on the finished product rod iron in step 3) temperature in-73 DEG C, returns back to room in atmosphere after insulation 2h
Temperature；
5) Ageing Treatment, the finished product rod iron in step 4) is placed on temperature is in 480 DEG C, and the insulation laggard line space of 3h is cold.
A kind of rustless steel foundry alloy material the most according to claim 1 and preparation method thereof, it is characterised in that: described impurity
For: in terms of percentage by weight %, Si≤0.55%, P≤0.010%, S≤0.005%, V≤0.30%, Nb≤0.30%.
A kind of rustless steel foundry alloy material the most according to claim 1 and preparation method thereof, it is characterised in that: described step
The step being melt into ESR ingot and technological parameter in B are as follows:
1), slag system: the ratio CaF of each content2:Al2O3: CaO:MgO=60:25:10:5, making the quantity of slag is 36Kg；
2), by 1) in slag system be electrolysed, its voltage is 56V ± 2V；Electric current is 7500 ± 300A.
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| CN201610534887.1A CN106167871A (en) | 2016-07-08 | 2016-07-08 | A kind of rustless steel foundry alloy material and preparation method thereof |
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ID=58066300
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107245669A (en) * | 2017-06-22 | 2017-10-13 | 威斯卡特工业（中国）有限公司 | A kind of casting foundry alloy and its production method |
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|---|---|---|---|---|
| CN87107554A (en) * | 1986-10-29 | 1988-05-11 | 沃斯特-阿尔派因股份公司 | Make the method for forked track of wheel of railway switch |
| JPS6411949A (en) * | 1987-07-02 | 1989-01-17 | Nisshin Steel Co Ltd | Precipitation hardening-type high-strength stainless steel excellent in welding strength and toughness |
| CN105695893A (en) * | 2016-02-25 | 2016-06-22 | 四川六合锻造股份有限公司 | High-performance heat-resistant steel material used for gas turbine wheel disc and preparation method of high-performance heat-resistant steel material |
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2016
- 2016-07-08 CN CN201610534887.1A patent/CN106167871A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87107554A (en) * | 1986-10-29 | 1988-05-11 | 沃斯特-阿尔派因股份公司 | Make the method for forked track of wheel of railway switch |
| JPS6411949A (en) * | 1987-07-02 | 1989-01-17 | Nisshin Steel Co Ltd | Precipitation hardening-type high-strength stainless steel excellent in welding strength and toughness |
| CN105695893A (en) * | 2016-02-25 | 2016-06-22 | 四川六合锻造股份有限公司 | High-performance heat-resistant steel material used for gas turbine wheel disc and preparation method of high-performance heat-resistant steel material |
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| Title |
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| 苏文文 等: "重复固溶热处理对超低温用铸造马氏体时效不锈钢性能的影响", 《金属热处理》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107245669A (en) * | 2017-06-22 | 2017-10-13 | 威斯卡特工业（中国）有限公司 | A kind of casting foundry alloy and its production method |
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