CN102127652B - Super-pure electro-slag remelting method for super-invar alloy - Google Patents
Super-pure electro-slag remelting method for super-invar alloy Download PDFInfo
- Publication number
- CN102127652B CN102127652B CN201110051166.2A CN201110051166A CN102127652B CN 102127652 B CN102127652 B CN 102127652B CN 201110051166 A CN201110051166 A CN 201110051166A CN 102127652 B CN102127652 B CN 102127652B
- Authority
- CN
- China
- Prior art keywords
- super
- slag
- invar alloy
- esr
- electro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a super-pure electro-slag remelting method for a super-invar alloy, which comprises the following steps of: a) preparing a self-melting electrode rod, namely performing vacuum induction melting on the components of the self-melting electrode rod of the super-invar alloy: 32 to 34 weight parts of Ni, 3.5 to 5.5 weight parts of Co and 60.5 to 64.5 weight parts of Fe, and casting to obtain a round rod, namely the self-melting electrode rod for electro-slag remelting; and b) performing electro-slag remelting, namely heating slag for electro-slag remelting, which is prepared from 40 to 85 weight parts of CaF2, 10 to 30 weight parts of GaO2 and 30 to 5 weight parts of Al2O3 into a melted state, pouring into a crystallizer, descending the self-melting electrode rod into the melted slag for electro-slag remelting, ensuring that liquid drops of the melted self-melting electrode rod pass through the melted slag layer and react with the slag, recrystallizing purified steel liquid at the bottom of the crystallizer to obtain an electro-slag ingot, forging to obtain a black rod, and performing solid solution and stabilization treatment to obtain the super-invar alloy. The purity of the super-invar alloy is improved, the structure is optimized, the thermal expansion coefficient is smaller, the processability of the alloy is improved, and the yield of a product is greatly improved.
Description
Technology is led
The present invention relates to a kind of metallic substance, particularly a kind of super-pure electro-slag remelting method for super-invar alloy.
Background technology
Super Invar alloy has the metallic substance of pole low thermal coefficient of expansion under referring to certain temperature, its super-low expansion performance comes from the material having large just spontaneous volume magnetostriction below Curie temperature, during cooling, magnetic hysteresis is extended and is counteracted normal lattice contraction, thus rate of expansion almost nil under producing room temperature.Super Invar alloy is mainly used in precision instrument and fields of measurement, and its ultralow coefficient of expansion is the basis of working accuracy and precision measurement.The coefficient of expansion of super Invar alloy can reach 0.1 × 10
-6below, and the coefficient of expansion of common metal and metallic compound all 1 × 10
-5above, therefore impurity is very large to the performance impact of super Invar alloy.
Esr is the technique that a kind of important purification material improves tissue, has very large impact to the performance of material.Esr can effectively reduce harmful element, and refinement impurity makes impurity homogenizing distribute, and thinning microstructure makes microstructure homogenization etc.More remarkable for super Invar alloy impact, the hot workability that rational electroslag remelting process improves alloy improves yield rate greatly, is conducive to the properties such as the expansion of alloy; Inappropriate technique seriously reduces the yield rate of forging, is even difficult to forge successfully.
We, through super Invar alloy esr test for many years, have explored a kind of electroslag process, by this technique, effectively can improve purity and the tissue of material, improved finished product rate and alloy property.
Summary of the invention
Object of the present invention is exactly for super Invar alloy, work out a kind ofly can reduce harmful element, improve Impurity Distribution, thinning microstructure thus improve the electroslag remelting process that the super-low expansion performance of Invar alloy and forging processing characteristics improve yield rate.
For achieving the above object, the present invention adopts following technical scheme:
A kind of super-pure electro-slag remelting method for super-invar alloy, is characterized in that comprising the following steps:
A), from the preparation of molten electrode bar
Super Invar alloy from the food ingredient of molten electrode bar is by weight: Ni:32 ~ 34 part, Co:3.5 ~ 5.5 part, Fe:60.5 ~ 64.5 part, through vacuum induction melting, be cast into pole, after the sand milling finishing of pole surface, be the certainly molten electrode bar of esr;
B), esr
The slag charge proportioning of esr is by weight: CaF
2: 40 ~ 85 parts, CaO
2: 10 ~ 30 parts, Al
2o
3: 30 ~ 5 parts, be exclusively used in super invar (Super invar) alloy esr, above-mentioned slag charge is heated to molten state, pour in crystallizer, crystallizer and base plate all use water cooling, slowly drop in the slag charge of the esr of melting by what prepare in step a from molten electrode bar, after the energising starting the arc, adjustment remelting voltage to 40 ~ 60V, electric current 3000 ~ 8000A; Slowly melt by resistance heat from molten electrode bar, reacting through the slag material layer of melting and slag charge from molten electrode bar drop after fusing, impurity element reduces, below crystallizer and base plate water coolant effect under, the molten steel quick solidification of purification, in the bottom of crystallizer again crystallization, obtain dense structure, even, pure, the ESR ingot of any surface finish, the diameter of ESR ingot is determined by crystallizer, commonly uses as 160mm ~ 320mm; ESR ingot heating and thermal insulation 2 hours at the temperature of 1000 ± 5 DEG C, be forged into casting skin rod again or be processed into strip or strand, the solution treatment of 50 ~ 120 minutes is carried out at the temperature of 850 ± 5 DEG C, after solution treatment at the temperature of 310 ± 5 DEG C stabilization treatment 4 hours, namely obtain super Invar alloy after test passes.
Preferably, in described step a, the diameter of certainly molten electrode bar is 110mm ~ 220mm.
Preferably, the electrode bar in described step b and the diameter ratio of crystallizer are packing ratio, and described packing ratio is 0.5 ~ 0.8.
Preferably, in described step b, the diameter of casting skin rod is 60mm ~ 140mm, and its forging ratio is greater than 4.
Further preferred, in described step b, then by casting skin rod through changing forging, hot rolling is prepared into strip, strand, the degree of finish of described strip, strand is greater than 50%.
After tested, contaminated the studying of super Invar alloy is divided into: C0.017%, Si < 0.004, Mn0.047%, P0.0005%, S < 0.0005%, Al0.04%;-40 ~ 60 DEG C of coefficient of expansion α are 0.23 × 10-7; Reach the object improving purity and performance.
The electrode bar energising fusing of super Invar alloy, through the slag charge of melting, again crystallization, purity and homogeneity of structure improve.
The beneficial effect of a kind of super-pure electro-slag remelting method for super-invar alloy of the present invention is, this new electroslag remelting process is for super Invar alloy, alloy purity is improved, organization optimization thermal expansivity is less, improve the processing characteristics of alloy, substantially increase the yield rate of product, the use properties of alloy is more stable simultaneously, available specification and substance increase, functional super Invar alloy product complete in specifications will promote precision sizing, the technical progress of field of test instrument and industry development, drive the Economic development in enterprise and area, its economic benefit and social benefit are significant.
Embodiment
Below by embodiment, the present invention is further illustrated, but therefore do not limit the present invention among described scope of embodiments.
Embodiment 1:
A kind of super-pure electro-slag remelting method for super-invar alloy, is characterized in that comprising the following steps:
A), from the preparation of molten electrode bar
Super Invar alloy from the food ingredient of molten electrode bar is by weight: Ni32%, Co4%, Fe64%, and gross weight 30kg, through vacuum induction melting, is cast into the pole of diameter 110mm; After the sand milling finishing of surface, as the certainly molten electrode bar of esr;
B), esr
The slag charge proportioning of esr is by weight: CaF
2: CaO
2: Al
2o
3=50: 30: 20, be exclusively used in super invar (Super invar) alloy esr, above-mentioned slag charge is heated to molten state, pour in the crystallizer of diameter 160mm, slowly drop in the slag charge of the esr of melting by what prepare in step a from molten electrode bar, after the starting the arc, adjust remelting voltage 42V, electric current about 3000A; Slowly melt by resistance heat from molten electrode, through the slag material layer of melting in the bottom of crystallizer again crystallization, obtain the ESR ingot that diameter is about 160mm; Heating and thermal insulation 2 hours at the temperature of 1000 ± 5 DEG C, be forged into the plate of 30mm × 150mm again, at the temperature of 850 ± 5 DEG C, carry out the solution treatment of 30 minutes, after solution treatment at the temperature of 310 ± 5 DEG C stabilization treatment 4 hours, namely obtain super Invar alloy after test.After tested, contaminated studying is divided into: C0.017%, Si < 0.004, Mn0.047%, P0.0005%, S < 0.0005%, Al0.04%;-40 ~ 60 DEG C of coefficient of expansion α are 0.23 × 10-7; Reach the object improving purity and performance.
Embodiment 2:
A kind of super-pure electro-slag remelting method for super-invar alloy, is characterized in that comprising the following steps:
A), from the preparation of molten electrode bar
Super Invar alloy from the food ingredient of molten electrode bar is by weight: Ni33%, Co4.5%, Fe62.5%, and gross weight 500kg, through vacuum induction melting, is cast into the pole of diameter 170mm; After the sand milling finishing of surface, as the certainly molten electrode bar of esr;
B), esr
The slag charge proportioning of esr is by weight: CaF
2: CaO
2: Al
2o
3=60: 20: 20, be exclusively used in super invar (Super invar) alloy esr, above-mentioned slag charge is heated to molten state, pour in the crystallizer of diameter 280mm, slowly drop in the slag charge of the esr of melting by what prepare in step a from molten electrode bar, after the starting the arc, adjust remelting voltage 52V, electric current about 6000A; Slowly melt by resistance heat from molten electrode, through the slag material layer of melting in the bottom of crystallizer again crystallization, obtain the ESR ingot that diameter is about 280mm; ESR ingot heating and thermal insulation 2 hours at the temperature of 1000 ± 5 DEG C, be forged into the casting skin rod of diameter 120mm again, at the temperature of 850 ± 5 DEG C, carry out the solution treatment of 60 minutes, after solution treatment at the temperature of 310 ± 5 DEG C stabilization treatment 4 hours, namely obtain super Invar alloy after test.After tested, contaminated studying is divided into: C0.016%, Si < 0.004, Mn0.087, P0.0005%, S < 0.0006%, Al0.03%;-40 ~ 60 DEG C of coefficient of expansion α are 0.47 × 10-7; Product is used for precision instrument parts.
Embodiment 3:
A kind of super-pure electro-slag remelting method for super-invar alloy, is characterized in that comprising the following steps:
A), from the preparation of molten electrode bar
Super Invar alloy from the food ingredient of molten electrode bar is by weight: Ni34%, Co3.5%, Fe62.5%, and gross weight 500kg, through vacuum induction melting, is cast into the pole of diameter 220mm; After the sand milling finishing of surface, as the certainly molten electrode bar of esr;
B), esr
The slag charge proportioning of esr is by weight: CaF
2: CaO
2: Al
2o
3=80: 15: 5, be exclusively used in super invar (Super invar) alloy esr, above-mentioned slag charge is heated to molten state, pour in the crystallizer of diameter 320mm, slowly drop in the slag charge of the esr of melting by what prepare in step a from molten electrode bar, after the starting the arc, adjust remelting voltage 42V, electric current about 3000A; Slowly melt by resistance heat from molten electrode, through the slag material layer of melting in the bottom of crystallizer again crystallization, obtain the ESR ingot that diameter is about 320mm; Heating and thermal insulation 2 hours at the temperature of 1000 ± 5 DEG C, cogging is forged into the casting skin rod of diameter 140mm, the hot rolling bar that casting skin rod process changes forging, hot rolling is prepared into diameter 12mm.Hot rolling bar carries out the solution treatment of 40 minutes at the temperature of 850 ± 5 DEG C, after solution treatment at the temperature of 310 ± 5 DEG C stabilization treatment 4 hours, namely obtain super Invar alloy after test.After tested, contaminated studying is divided into: C0.016%, Si < 0.004, Mn0.032%, P0.0006%, S < 0.0005%, Al0.04%;-40 ~ 60 DEG C of coefficient of expansion α are 0.13 × 10-7; Reach the object improving purity and performance.
Although describe embodiments of the present invention, those of ordinary skill in the art can make various distortion or amendment within the scope of the appended claims.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (5)
1. a super-pure electro-slag remelting method for super-invar alloy, is characterized in that comprising the following steps:
A), from the preparation of molten electrode bar
Super Invar alloy from the food ingredient of molten electrode bar is by weight: Ni:32 ~ 34 part, Co:3.5 ~ 5.5 part, Fe:60.5 ~ 64.5 part, through vacuum induction melting, be cast into pole, after the sand milling finishing of pole surface, be the certainly molten electrode bar of esr;
B), esr
The slag charge proportioning of esr is by weight: CaF
2: 40 ~ 85 parts, CaO
2: 10 ~ 30 parts, Al
2o
3: 30 ~ 5 parts, be exclusively used in super Invar alloy esr, above-mentioned slag charge is heated to molten state, pour in crystallizer, crystallizer and base plate all use water cooling, slowly drop in the slag charge of the esr of melting by what prepare in step a from molten electrode bar, after the energising starting the arc, adjustment remelting voltage to 40 ~ 60V, electric current 3000 ~ 8000A; Slowly to melt by resistance heat from molten electrode bar, reacting from molten electrode bar drop through the slag material layer of melting and slag charge and being purified after fusing, and in the bottom of crystallizer again crystallization, obtain dense structure, even, pure, the ESR ingot of any surface finish; ESR ingot heating and thermal insulation 2 hours at the temperature of 1000 ± 5 DEG C, be forged into casting skin rod again or be processed into strip or strand, at the temperature of 850 ± 5 DEG C, carry out the solution treatment of 50 ~ 120 minutes, after solution treatment at the temperature of 310 ± 5 DEG C stabilization treatment 4 hours, obtain super Invar alloy.
2. super-pure electro-slag remelting method for super-invar alloy according to claim 1, is characterized in that: in described step a, the diameter of certainly molten electrode bar is 110mm ~ 220mm.
3. super-pure electro-slag remelting method for super-invar alloy according to claim 1, is characterized in that: the electrode bar in described step b and the diameter ratio of crystallizer are packing ratio, and described packing ratio is 0.5 ~ 0.8.
4. super-pure electro-slag remelting method for super-invar alloy according to claim 1, is characterized in that: in described step b, and the forging ratio of casting skin rod is more than or equal to 4.
5. the super-pure electro-slag remelting method for super-invar alloy according to claim 1 or 4, is characterized in that: in described step b, and casting skin rod process changes forging, hot rolling is prepared into strip, strand, and the degree of finish of described strip, strand is more than or equal to 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110051166.2A CN102127652B (en) | 2011-03-03 | 2011-03-03 | Super-pure electro-slag remelting method for super-invar alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110051166.2A CN102127652B (en) | 2011-03-03 | 2011-03-03 | Super-pure electro-slag remelting method for super-invar alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102127652A CN102127652A (en) | 2011-07-20 |
| CN102127652B true CN102127652B (en) | 2015-06-17 |
Family
ID=44265921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110051166.2A Active CN102127652B (en) | 2011-03-03 | 2011-03-03 | Super-pure electro-slag remelting method for super-invar alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102127652B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103667732B (en) * | 2012-09-12 | 2016-01-20 | 上海丰渠特种合金有限公司 | A kind of method of esr |
| CN102925712A (en) * | 2012-11-23 | 2013-02-13 | 重庆材料研究院 | Electroslag remelting method for difficult-processing high alloy stainless steel and electroslag remelting slag system adopting electroslag remelting method |
| CN103820710B (en) * | 2014-03-07 | 2015-12-02 | 沈阳富创精密设备有限公司 | A kind of large-scale integrated circuit manufacturing equipment Invar alloy and preparation method thereof |
| CN103924153B (en) * | 2014-04-22 | 2016-04-27 | 钢铁研究总院 | A kind of low bulk magnetic shielding Alloy And Preparation Method |
| CN106756078A (en) * | 2016-11-17 | 2017-05-31 | 河南工程学院 | A kind of electroslag remelting slag of heat-resisting austenitic stainless steel and preparation method thereof |
| CN106521174B (en) * | 2016-11-17 | 2018-08-07 | 河南工程学院 | A kind of electro-slag re-melting method of soft magnetism permalloy |
| CN106676363A (en) * | 2016-12-14 | 2017-05-17 | 张家港市广大机械锻造有限公司 | Novel high-temperature alloy casting production process |
| CN110846515A (en) * | 2019-11-21 | 2020-02-28 | 重庆材料研究院有限公司 | Preparation method of nickel-based alloy 690 with ultralow gas content |
| CN111811263A (en) * | 2020-06-22 | 2020-10-23 | 北京钢研高纳科技股份有限公司 | Smelting furnace and method for preventing gas holes from being formed at bottom of electroslag remelting ingot |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437657A (en) * | 2000-05-30 | 2003-08-20 | 安费尤吉纳精密公司 | Hardened Fe-Ni alloy for making integrated circuit grids and method for making same |
| CN1936054A (en) * | 2005-09-19 | 2007-03-28 | 丹阳市龙鑫合金有限公司 | Electric resistance alloy and its preparing process |
| CN101029345A (en) * | 2006-02-28 | 2007-09-05 | 宝山钢铁股份有限公司 | Production of low-phosphor electroslag melt steel |
| CN101168818A (en) * | 2006-10-23 | 2008-04-30 | 宝山钢铁股份有限公司 | Fe-36Ni based alloy wire and manufacturing method thereof |
| CN101310917A (en) * | 2007-05-24 | 2008-11-26 | 宝山钢铁股份有限公司 | Production method of Fe-Ni low-expansion alloy wire |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6376852A (en) * | 1986-09-19 | 1988-04-07 | Nisshin Steel Co Ltd | Low strength and low thermal expansion alloy |
-
2011
- 2011-03-03 CN CN201110051166.2A patent/CN102127652B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437657A (en) * | 2000-05-30 | 2003-08-20 | 安费尤吉纳精密公司 | Hardened Fe-Ni alloy for making integrated circuit grids and method for making same |
| CN1936054A (en) * | 2005-09-19 | 2007-03-28 | 丹阳市龙鑫合金有限公司 | Electric resistance alloy and its preparing process |
| CN101029345A (en) * | 2006-02-28 | 2007-09-05 | 宝山钢铁股份有限公司 | Production of low-phosphor electroslag melt steel |
| CN101168818A (en) * | 2006-10-23 | 2008-04-30 | 宝山钢铁股份有限公司 | Fe-36Ni based alloy wire and manufacturing method thereof |
| CN101310917A (en) * | 2007-05-24 | 2008-11-26 | 宝山钢铁股份有限公司 | Production method of Fe-Ni low-expansion alloy wire |
Non-Patent Citations (3)
| Title |
|---|
| 《工程材料实用手册》编辑委员会编.超因瓦合金.《工程材料实用手册 第5卷 粉末冶金材料 精密合金与功能材料(第2版)》.中国标准出版社,2002,第312页第1节,第312页第1节. * |
| 徐宏武、高荣君.电渣重熔.《电渣重熔冶金》.中国矿业大学出版社,1994,第48页. * |
| 电渣重熔渣系选择的工艺探索;王宾等;《四川冶金》;20011031(第5期);第3页左栏第2段，表4、表6、表8、表9、表10 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102127652A (en) | 2011-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102127652B (en) | Super-pure electro-slag remelting method for super-invar alloy | |
| CN102912151B (en) | Ultra pure electroslag remelting method for high-performance corrosion resistant alloy | |
| CN102031403B (en) | Method for manufacturing refined high cleanliness Al-Ti-B alloy | |
| JP2012524837A5 (en) | ||
| CN102925712A (en) | Electroslag remelting method for difficult-processing high alloy stainless steel and electroslag remelting slag system adopting electroslag remelting method | |
| WO2017097078A1 (en) | Highly-conductive aluminum alloy material and preparation method for aluminum alloy cable conductor | |
| CN108456799A (en) | A kind of high-performance copper ferroalloy materials and its electroslag remelting preparation method | |
| JP2015507693A (en) | Zr-based amorphous alloy | |
| CN102732845B (en) | Nickel-chromium alloy target with high purity and high compositional uniformity and method for preparing same | |
| CN102337406A (en) | Method for preparing aluminum-scandium intermediate alloy by using aluminothermic reduction method | |
| CN104278176B (en) | A kind of preparation method of high-quality Al-5Ti-1B intermediate alloy | |
| CN106903294B (en) | A kind of preparation method and low cost amorphous alloy part of low cost amorphous alloy part | |
| CN105925841A (en) | Method for preparing large-sized Ti-1023 (Ti-10V-2Fe-3Al) alloy cast ingot | |
| CN102294462A (en) | Quick solidification preparation method of copper iron alloy material | |
| CN103526038B (en) | A kind of high-strength high-plasticity TWIP steel esr production method | |
| WO2012027990A1 (en) | Grain refiner for magnesium and magnesium alloy and preparation method thereof | |
| CN109023167A (en) | A kind of titanium alloy plate and its processing method | |
| CN106119617B (en) | A kind of aluminium zircaloy and its powder metallurgy forming method | |
| CN108330412A (en) | A kind of non-crystaline amorphous metal and its production technology | |
| CN102634700B (en) | Casting aluminum-silicon alloy inoculant, and preparation method and application thereof | |
| CN101506097A (en) | Metallic silicon and process for producing the same | |
| CN108866365A (en) | A kind of high-quality titanium aluminium pre-alloyed powder electrode preparation method | |
| CN102242300B (en) | High-toughness corrosion-resistant magnesium alloy and preparation method thereof | |
| CN109022848A (en) | A kind of high-strength corrosion-resisting Aluminum alloy production method | |
| CN108165780A (en) | A kind of preparation method of Ni-Cr-Al-Fe systems high temperature alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |