CN113234989A - 一种基于细晶强化的因瓦合金板材的制备方法 - Google Patents
一种基于细晶强化的因瓦合金板材的制备方法 Download PDFInfo
- Publication number
- CN113234989A CN113234989A CN202110495827.4A CN202110495827A CN113234989A CN 113234989 A CN113234989 A CN 113234989A CN 202110495827 A CN202110495827 A CN 202110495827A CN 113234989 A CN113234989 A CN 113234989A
- Authority
- CN
- China
- Prior art keywords
- equal
- temperature
- less
- invar alloy
- furnace
- 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.)
- Granted
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 80
- 239000000956 alloy Substances 0.000 title claims abstract description 80
- 229910001374 Invar Inorganic materials 0.000 title claims abstract description 59
- 238000005728 strengthening Methods 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- 238000005242 forging Methods 0.000 claims abstract description 14
- 238000005098 hot rolling Methods 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 8
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 8
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 7
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 7
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims description 24
- 238000010079 rubber tapping Methods 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 238000007670 refining Methods 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 15
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 15
- 239000004571 lime Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- 238000003723 Smelting Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 238000000137 annealing Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000010436 fluorite Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 229910018505 Ni—Mg Inorganic materials 0.000 claims description 8
- 229910008455 Si—Ca Inorganic materials 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 6
- 238000003801 milling Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 230000010485 coping Effects 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 238000007872 degassing Methods 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- 239000008199 coating composition Substances 0.000 claims 1
- 229910052681 coesite Inorganic materials 0.000 claims 1
- 229910052906 cristobalite Inorganic materials 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 229910052682 stishovite Inorganic materials 0.000 claims 1
- 229910052905 tridymite Inorganic materials 0.000 claims 1
- 239000007789 gas Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001953 recrystallisation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- KGWWEXORQXHJJQ-UHFFFAOYSA-N [Fe].[Co].[Ni] Chemical compound [Fe].[Co].[Ni] KGWWEXORQXHJJQ-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/001—Heat treatment of ferrous alloys containing Ni
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Description
轧制前厚度/mm | 轧制后厚度/mm | 变形量/% |
≠140.0*1000.0 | ≠10.0 | 92.86 |
≠240.0*1100.0 | ≠20.0 | 91.67 |
≠195.0*900.0 | ≠12.0 | 93.85 |
≠260.0*1000.0 | ≠26.0 | 90.00 |
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110495827.4A CN113234989B (zh) | 2021-05-07 | 2021-05-07 | 一种基于细晶强化的因瓦合金板材的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110495827.4A CN113234989B (zh) | 2021-05-07 | 2021-05-07 | 一种基于细晶强化的因瓦合金板材的制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN113234989A true CN113234989A (zh) | 2021-08-10 |
CN113234989B CN113234989B (zh) | 2022-01-11 |
Family
ID=77132512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110495827.4A Active CN113234989B (zh) | 2021-05-07 | 2021-05-07 | 一种基于细晶强化的因瓦合金板材的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113234989B (zh) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105220067A (zh) * | 2014-06-11 | 2016-01-06 | 丹阳市凯鑫合金材料有限公司 | 射频器的谐振杆用殷钢冷镦丝的生产方法 |
CN107119234A (zh) * | 2017-05-11 | 2017-09-01 | 东北大学 | 一种因瓦合金带材的细晶强化方法 |
-
2021
- 2021-05-07 CN CN202110495827.4A patent/CN113234989B/zh active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105220067A (zh) * | 2014-06-11 | 2016-01-06 | 丹阳市凯鑫合金材料有限公司 | 射频器的谐振杆用殷钢冷镦丝的生产方法 |
CN107119234A (zh) * | 2017-05-11 | 2017-09-01 | 东北大学 | 一种因瓦合金带材的细晶强化方法 |
Also Published As
Publication number | Publication date |
---|---|
CN113234989B (zh) | 2022-01-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110230009B (zh) | 一种具有良好切削性能的热作模具钢及其制备方法 | |
CN108531790A (zh) | 一种高强度高热导率6系铝合金带材及其制备方法 | |
WO2022022040A1 (zh) | 一种355MPa级别海洋工程用耐低温热轧H型钢及其制备方法 | |
CN102517522A (zh) | 液压件用钢及其制造方法 | |
CN109082566B (zh) | 一种手机边框用6系合金铝板带材及其制备方法 | |
CN103320691B (zh) | 一种q345系列卷板的制造方法 | |
CN115852267B (zh) | 一种高强高导电率低膨胀铁镍钼合金丝材及其生产方法 | |
CN110951946B (zh) | 一种低密度钢的热处理工艺及其制备方法 | |
WO2023098919A1 (zh) | 一种低碳含氮奥氏体不锈钢棒的制造方法 | |
CN114892094B (zh) | 一种预硬型镜面塑料模具钢及其生产方法 | |
CN116590576A (zh) | 一种铁镍基高温合金、超薄带箔材及制备方法 | |
CN113215494B (zh) | 一种航空用因瓦合金板材的制备方法 | |
CN114934231A (zh) | 一种高锰低磁高强度奥氏体钢及其制造方法 | |
CN113234989B (zh) | 一种基于细晶强化的因瓦合金板材的制备方法 | |
CN111910120A (zh) | 一种高韧性的球墨铸铁的制备方法 | |
CN114875334B (zh) | 一种预硬型镜面塑料模具钢及其冶炼方法 | |
CN114000027B (zh) | Uns n08120锻环及其制造方法 | |
CN114908285B (zh) | 一种低成本高温搪瓷用热轧钢板及其制造方法 | |
EP4137603A1 (en) | Low-cost non-oriented electrical steel plate with extremely low aluminum content, and preparation method therefor | |
CN113088764A (zh) | 一种锂电池盖板用铝合金板带材及其制备方法 | |
CN105385937B (zh) | 一种高磁感取向硅钢极薄带的减量化制备方法 | |
CN114774806B (zh) | 一种高强韧轻质钢板及其制备方法和应用 | |
JPS6237094B2 (zh) | ||
CN116005062B (zh) | 高强度高耐蚀奥氏体不锈钢冷轧卷板及其制备方法 | |
JPH08283853A (ja) | 磁気特性の優れた無方向性電磁鋼板の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A kind of preparation method of Invar alloy sheet based on fine grain strengthening Effective date of registration: 20220921 Granted publication date: 20220111 Pledgee: Industrial Bank Limited by Share Ltd. Xi'an branch Pledgor: XI'AN GANGYAN SPECIAL ALLOY CO.,LTD. Registration number: Y2022610000616 |
|
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231116 Granted publication date: 20220111 Pledgee: Industrial Bank Limited by Share Ltd. Xi'an branch Pledgor: XI'AN GANGYAN SPECIAL ALLOY CO.,LTD. Registration number: Y2022610000616 |
|
PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Preparation Method of Invar Alloy Sheet Based on Fine Grain Strengthening Effective date of registration: 20231120 Granted publication date: 20220111 Pledgee: Industrial Bank Limited by Share Ltd. Xi'an branch Pledgor: XI'AN GANGYAN SPECIAL ALLOY CO.,LTD. Registration number: Y2023610000732 |
|
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20220111 Pledgee: Industrial Bank Limited by Share Ltd. Xi'an branch Pledgor: XI'AN GANGYAN SPECIAL ALLOY CO.,LTD. Registration number: Y2023610000732 |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Preparation Method of Invar Alloy Sheet Based on Fine Grain Strengthening Granted publication date: 20220111 Pledgee: Industrial Bank Limited by Share Ltd. Xi'an branch Pledgor: XI'AN GANGYAN SPECIAL ALLOY CO.,LTD. Registration number: Y2024610000134 |