CN105908058A - Smelting method based on nickel-based heat-resistance alloy - Google Patents
Smelting method based on nickel-based heat-resistance alloy Download PDFInfo
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- CN105908058A CN105908058A CN201610419536.6A CN201610419536A CN105908058A CN 105908058 A CN105908058 A CN 105908058A CN 201610419536 A CN201610419536 A CN 201610419536A CN 105908058 A CN105908058 A CN 105908058A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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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 smelting method based on a nickel-based heat-resistance alloy. The method comprises specific steps that molten steel is prepared, and the quantitative amount of metal nickel, the quantitative amount of metal chromium, the quantitative amount of metal cobalt, the quantitative amount of ferrocolumbium, the quantitative amount of ferrovanadium and the quantitative amount of ferrotitanium are loaded in an EAF electric arc furnace, and heated to the high temperature until all kinds of metal are molten; impurities of the molten steel are removed, the prepared molten steel is subject to temperature adjustment and refining for a period, and then, electrolytic aluminum and ferroboron are added to be subject to sufficient stirring and deoxidation treatment; the molten steel is poured, the prepared alloy molten steel is put into an LF ladle furnace to be cooled for a period, and then the molten steel is poured into a shaping mold, wherein a heating agent is added into a riser of the mold; alloy phase change treatment is carried out, the poured alloy is subject to heat preservation for 24 h to 30 h at the temperature of 1280 DEG C to 1300 DEG C, after the alloy is annealed, the alloy is rapidly cooled to 800 DEG C, then the alloy is shifted into a heat preservation furnace to be subject to phase change, and after the temperature rises to a certain temperature, forging heating is carried out; and the alloy is re-machined, and the forged alloy is subject to discharging, quenching and medium-temperature tempering. The manufactured alloy is low in cost.
Description
Technical field
The present invention relates to the smelting process of a kind of alloy, a kind of smelting process based on Refractoloy, belong to alloy smelting method applied technical field.
Background technology
Development along with science and technology, specific alloy yield and kind are needed expanding day, requirement to quality is more and more stricter, harsh, in recent years, around improving specific alloy performance, quality, kind, efficiency, reduce specific alloy cost, energy-saving and cost-reducing, the aspects such as environmental friendliness have employed series of new techniques, new technology, new equipment, make the cleanliness factor of specific alloy, the uniformity, structure refinement degree and dimensional accuracy etc. have had large increase, heat-resisting alloy is also known as high temperature alloy, it is for industrial department under the high temperature conditions and application technology, there is great meaning.And there is a lot of weak point in the mode of alloy smelting at present, the method one used at present is to add the alloying elements such as Cr, Si, Al in steel, or carry out Cr, Si, Al Alloying Treatment on the surface of steel, they can quickly generate one layer of fine and close oxide-film in oxidizing atmosphere, and the surface of the most attached ground steel, thus effectively stop proceeding of oxidation；Two is at steel surface, forms the high-temperaure coatings such as dystectic oxide, carbide, nitride by various methods, and the alloy so manufactured does not has good heat resistance, and manufacturing cost is high, manufactures complexity.
Summary of the invention
The purpose of the present invention is that provides a kind of smelting process based on Refractoloy to solve the problems referred to above.
The present invention is achieved through the following technical solutions above-mentioned purpose, a kind of smelting process based on Refractoloy, specifically comprises the following steps that
Step A, the producing of molten steel, be loaded on quantitative metallic nickel, crome metal, metallic cobalt, ferro-niobium, vanadium iron, ferrotianium in EAF electric arc furnace, be heated to high temperature to each metal molten；
Step B, the removal of molten steel impurity, molten steel that the molten steel first produced in step A is produced adjusts temperature refine a period of time, is subsequently adding electrolytic aluminium, ferro-boron and sufficiently stirs and carry out deoxidation treatment；
Step C, the cast of molten steel, put into the alloy molten steel produced in step B after cooling down a period of time in LF ladle furnace, be cast at rising head in the stock mould adding exothermic mixture；
Step D, alloy phase change process, and it is insulation 24-30h in 1280 DEG C-1300 DEG C that the alloy poured into a mould in step C is placed on temperature, is cooled fast to 800 DEG C, then proceeds to carry out in holding furnace phase transformation after alloy is annealed, then are warming up to uniform temperature and carry out Forge Heating；
Step E, the reprocessing of alloy, carry out blanking → quenching → average tempering by the alloy forged in step D.
Preferably, in described step A in the producing of molten steel, weight percentage is: nickel 0.01-0.03%, chromium 19.5-21%, cobalt 0.02-0.03%, niobium 0.01-1.5%, vanadium 0.2-0.6%, titanium 1.5-3.0%, S≤0.02, P≤0.02, surplus is inevitable impurity.
Preferably, the high temperature in described step A is 1580 DEG C-1660 DEG C.
Preferably, in described step B in the removal process of molten steel impurity, add weight percentage be 1-2% electrolytic aluminium, weight percentage be that 0.002-0.005% ferro-boron sufficiently stirs.
Preferably, in described step B molten steel impurity go the deoxidation process of a good appetite suddenly appearing in a serious disease as follows: the Si adding Mn, 1-2% that weight percentage is 0.5-0.8% in the molten steel of molten steel carries out pre-deoxidation, after the thin slag in molten steel surface is formed, adds powdered carbon final deoxidizing.
Preferably, in described step E, the reprocessing process of alloy is as follows: first, the alloy forged in step D is carried out blanking, Quenching Treatment is carried out after blanking, temperature during quenching is 850-900 DEG C, the cold 3-4h of the laggard line space that quenches, puts the alloy that air cooling is good and places into insulation 2-3h in 500 DEG C-550 DEG C, and after coming out of the stove, trickle cools down.
nullThe invention has the beneficial effects as follows: the alloy that this kind smelting process based on Refractoloy is smelted at high temperature has good mechanical performance and chemical stability，Wherein nickel-base alloy is optimum super heating resisting metal material，Matrix Ni and other metallic compound in tissue，It is insulation 24-30h in 1280 DEG C-1300 DEG C that the alloy poured into a mould is placed on temperature，It is cooled fast to 800 DEG C after alloy is annealed，Then proceed to holding furnace is carried out phase transformation，It is warming up to after uniform temperature carries out Forge Heating process again，It uses temperature up to 1000～1100 DEG C，The impurity in alloying metal after this kind processes sheet in the alloy is taken drugs and is significantly declined，Lateral performance can be made close with longitudinal Performance comparision，While improving lateral performance，Heat treatment deformation can also be reduced，Improve alloy heat resistance in use，Thus improve the life-span of the product that this kind of alloy manufactures，There are good economic benefit and social benefit，It is suitable for promoting the use of.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment one:
A kind of smelting process based on Refractoloy, specifically comprises the following steps that
Step A, the producing of molten steel, be loaded on quantitative metallic nickel, crome metal, metallic cobalt, ferro-niobium, vanadium iron, ferrotianium in EAF electric arc furnace, be heated to high temperature to each metal molten；
Step B, the removal of molten steel impurity, molten steel that the molten steel first produced in step A is produced adjusts temperature refine a period of time, is subsequently adding electrolytic aluminium, ferro-boron and sufficiently stirs and carry out deoxidation treatment；
Step C, the cast of molten steel, put into the alloy molten steel produced in step B after cooling down a period of time in LF ladle furnace, be cast at rising head in the stock mould adding exothermic mixture；
Step D, alloy phase change process, and it is insulation 24-30h in 1280 DEG C-1300 DEG C that the alloy poured into a mould in step C is placed on temperature, is cooled fast to 800 DEG C, then proceeds to carry out in holding furnace phase transformation after alloy is annealed, then are warming up to uniform temperature and carry out Forge Heating；
Step E, the reprocessing of alloy, carry out blanking → quenching → average tempering by the alloy forged in step D.
In step A in the producing of molten steel, weight percentage is: nickel 0.01-0.03%, chromium 19.5-21%, cobalt 0.02-0.03%, niobium 0.01-1.5%, vanadium 0.2-0.6%, titanium 1.5-3.0%, S≤0.02, P≤0.02, and surplus is inevitable impurity.High temperature in step A is 2800 DEG C-3000 DEG C.In step B in the removal process of molten steel impurity, add weight percentage be 2% electrolytic aluminium, weight percentage be that 0.005% ferro-boron sufficiently stirs.In step B molten steel impurity go the deoxidation process of a good appetite suddenly appearing in a serious disease as follows: the Si adding Mn, 1-2% that weight percentage is 0.5-0.8% in the molten steel of molten steel carries out pre-deoxidation, after the thin slag in molten steel surface is formed, adds powdered carbon final deoxidizing.In step E, the reprocessing process of alloy is as follows: first, the alloy forged in step D is carried out blanking, Quenching Treatment is carried out after blanking, temperature during quenching is 850-900 DEG C, the cold 4h of the laggard line space that quenches, being put by the alloy that air cooling is good and place into insulation 3h in 500 DEG C-550 DEG C, after coming out of the stove, trickle cools down.
Embodiment two:
In step A in the producing of molten steel, weight percentage is: nickel 0.01-0.03%, chromium 19.5-21%, cobalt 0.02-0.03%, niobium 0.01-1.5%, vanadium 0.2-0.6%, titanium 1.5-3.0%, S≤0.02, P≤0.02, and surplus is inevitable impurity.High temperature in step A is 2800 DEG C-3000 DEG C.In step B in the removal process of molten steel impurity, add weight percentage be 2% electrolytic aluminium, weight percentage be that 0.005% ferro-boron sufficiently stirs.In step B molten steel impurity go the deoxidation process of a good appetite suddenly appearing in a serious disease as follows: the Si adding Mn, 1-2% that weight percentage is 0.5-0.8% in the molten steel of molten steel carries out pre-deoxidation, after the thin slag in molten steel surface is formed, adds powdered carbon final deoxidizing.In step E, the reprocessing process of alloy is as follows: first, the alloy forged in step D is carried out blanking, Quenching Treatment is carried out after blanking, temperature during quenching is 850-900 DEG C, the cold 3h of the laggard line space that quenches, being put by the alloy that air cooling is good and place into insulation 2h in 500 DEG C-550 DEG C, after coming out of the stove, trickle cools down.
Embodiment three:
In step A in the producing of molten steel, weight percentage is: nickel 0.01-0.03%, chromium 19.5-21%, cobalt 0.02-0.03%, niobium 0.01-1.5%, vanadium 0.2-0.6%, titanium 1.5-3.0%, S≤0.02, P≤0.02, and surplus is inevitable impurity.High temperature in step A is 2800 DEG C-3000 DEG C.In step B in the removal process of molten steel impurity, add weight percentage be 2% electrolytic aluminium, weight percentage be that 0.005% ferro-boron sufficiently stirs.In step B molten steel impurity go the deoxidation process of a good appetite suddenly appearing in a serious disease as follows: the Si adding Mn, 1-2% that weight percentage is 0.5-0.8% in the molten steel of molten steel carries out pre-deoxidation, after the thin slag in molten steel surface is formed, adds powdered carbon final deoxidizing.In step E, the reprocessing process of alloy is as follows: first, the alloy forged in step D is carried out blanking, Quenching Treatment is carried out after blanking, temperature during quenching is 850-900 DEG C, the cold 3.5h of the laggard line space that quenches, being put by the alloy that air cooling is good and place into insulation 2.5h in 500 DEG C-550 DEG C, after coming out of the stove, trickle cools down.
nullAccording to embodiment one、Two、Three alloys made have good mechanical performance and chemical stability，Wherein nickel-base alloy is optimum super heating resisting metal material，Matrix Ni and other metallic compound in tissue，It is insulation 24-30h in 1280 DEG C-1300 DEG C that the alloy poured into a mould is placed on temperature，It is cooled fast to 800 DEG C after alloy is annealed，Then proceed to holding furnace is carried out phase transformation，It is warming up to after uniform temperature carries out Forge Heating process again，It uses temperature up to 1000～1100 DEG C，The impurity in alloying metal after this kind processes sheet in the alloy is taken drugs and is significantly declined，Lateral performance can be made close with longitudinal Performance comparision，While improving lateral performance，Heat treatment deformation can also be reduced，Improve alloy heat resistance in use，Thus improve the life-span of the product that this kind of alloy manufactures.
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, and without departing from the spirit or essential characteristics 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, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in the present invention.Should not be considered as limiting involved claim by any labelling in claim.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.
Claims (6)
1. a smelting process based on Refractoloy, it is characterised in that: specifically comprise the following steps that
Step A, the producing of molten steel, be loaded on quantitative metallic nickel, crome metal, metallic cobalt, ferro-niobium, vanadium iron, ferrotianium in EAF electric arc furnace, be heated to high temperature to each metal molten；
Step B, the removal of molten steel impurity, molten steel that the molten steel first produced in step A is produced adjusts temperature refine a period of time, is subsequently adding electrolytic aluminium, ferro-boron and sufficiently stirs and carry out deoxidation treatment；
Step C, the cast of molten steel, put into the alloy molten steel produced in step B after cooling down a period of time in LF ladle furnace, be cast at rising head in the stock mould adding exothermic mixture；
Step D, alloy phase change process, and it is insulation 24-30h in 1280 DEG C-1300 DEG C that the alloy poured into a mould in step C is placed on temperature, is cooled fast to 800 DEG C, then proceeds to carry out in holding furnace phase transformation after alloy is annealed, then are warming up to uniform temperature and carry out Forge Heating；
Step E, the reprocessing of alloy, carry out blanking → quenching → average tempering by the alloy forged in step D.
A kind of smelting process based on Refractoloy the most according to claim 1, it is characterized in that: in described step A in the producing of molten steel, weight percentage is: nickel 0.01-0.03%, chromium 19.5-21%, cobalt 0.02-0.03%, niobium 0.01-1.5%, vanadium 0.2-0.6%, titanium 1.5-3.0%, S≤0.02, P≤0.02, surplus is inevitable impurity.
A kind of smelting process based on Refractoloy the most according to claim 2, it is characterised in that: the high temperature in described step A is 1580 DEG C-1660 DEG C.
A kind of smelting process based on Refractoloy the most according to claim 1, it is characterized in that: in described step B in the removal process of molten steel impurity, add weight percentage be 1-2% electrolytic aluminium, weight percentage be that 0.002-0.005% ferro-boron sufficiently stirs.
A kind of smelting process based on Refractoloy the most according to claim 2, it is characterized in that: in described step B molten steel impurity go the deoxidation process of a good appetite suddenly appearing in a serious disease as follows: the Si adding Mn, 1-2% that weight percentage is 0.5-0.8% in the molten steel of molten steel carries out pre-deoxidation, after the thin slag in molten steel surface is formed, add powdered carbon final deoxidizing.
A kind of smelting process based on Refractoloy the most according to claim 1, it is characterized in that: in described step E, the reprocessing process of alloy is as follows: first, the alloy forged in step D is carried out blanking, Quenching Treatment is carried out after blanking, temperature during quenching is 850-900 DEG C, the cold 3-4h of the laggard line space that quenches, puts the alloy that air cooling is good and places into insulation 2-3h in 500 DEG C-550 DEG C, and after coming out of the stove, trickle cools down.
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| CN201610419536.6A CN105908058A (en) | 2016-06-14 | 2016-06-14 | Smelting method based on nickel-based heat-resistance alloy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107858681A (en) * | 2017-11-30 | 2018-03-30 | 常州力安液压设备有限公司 | The laser strengthening method of cylinder surfaces is led in a kind of hydraulic pressure |
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| CN102994898A (en) * | 2012-09-28 | 2013-03-27 | 乐山沙湾天华机械制造有限责任公司 | Casting method of C12A material casting piece for supercritical unit |
| CN103667958A (en) * | 2013-12-17 | 2014-03-26 | 西宁特殊钢股份有限公司 | Steel for second last stage long blade of ultra-supercritical steam turbine generator set and smelting method of steel |
| CN104878179A (en) * | 2015-06-11 | 2015-09-02 | 南京钢铁股份有限公司 | Production process of heat-resistant steel belt for power plant |
| CN105648278A (en) * | 2016-03-30 | 2016-06-08 | 山东瑞泰新材料科技有限公司 | Smelting method of nickel-based high-temperature alloy |
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- 2016-06-14 CN CN201610419536.6A patent/CN105908058A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994898A (en) * | 2012-09-28 | 2013-03-27 | 乐山沙湾天华机械制造有限责任公司 | Casting method of C12A material casting piece for supercritical unit |
| CN103667958A (en) * | 2013-12-17 | 2014-03-26 | 西宁特殊钢股份有限公司 | Steel for second last stage long blade of ultra-supercritical steam turbine generator set and smelting method of steel |
| CN104878179A (en) * | 2015-06-11 | 2015-09-02 | 南京钢铁股份有限公司 | Production process of heat-resistant steel belt for power plant |
| CN105648278A (en) * | 2016-03-30 | 2016-06-08 | 山东瑞泰新材料科技有限公司 | Smelting method of nickel-based high-temperature alloy |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107858681A (en) * | 2017-11-30 | 2018-03-30 | 常州力安液压设备有限公司 | The laser strengthening method of cylinder surfaces is led in a kind of hydraulic pressure |
| CN107858681B (en) * | 2017-11-30 | 2019-07-05 | 常州力安液压设备有限公司 | A kind of hydraulic interior laser strengthening method for leading cylinder surfaces |
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