CN113005335A - Novel aluminum alloy material, thin-wall part and metal hand die - Google Patents
Novel aluminum alloy material, thin-wall part and metal hand die Download PDFInfo
- Publication number
- CN113005335A CN113005335A CN202110195595.0A CN202110195595A CN113005335A CN 113005335 A CN113005335 A CN 113005335A CN 202110195595 A CN202110195595 A CN 202110195595A CN 113005335 A CN113005335 A CN 113005335A
- Authority
- CN
- China
- Prior art keywords
- percent
- aluminum alloy
- alloy material
- novel aluminum
- easy
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/14—Alloys based on aluminium with copper as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/18—Alloys based on aluminium with copper as the next major constituent with zinc
Abstract
The invention provides a novel aluminum alloy material, a thin-wall part and a metal hand die, relates to the technical field of aluminum alloy, and solves the technical problems that the aluminum alloy material is difficult to form by die casting in a formula, difficult to weld after forming and incapable of carrying out color oxidation treatment on the surface. The novel aluminum alloy material comprises the following components in percentage by weight: 0.1 to 0.7 percent; iron: 0.25 to 0.6 percent; copper: 0.05 to 0.35 percent; manganese: 0.02-0.14%; magnesium: 0.3-2.6%; chromium: 0.02-0.37%; zinc: 0.05 to 0.2 percent; titanium: 0 to 0.14 percent; the rest is aluminum and a small amount of impurities. The invention gives full play to the physical characteristics of magnesium and zinc, has good fluidity, ensures that the molten aluminum alloy is not easy to generate sand holes and internal defects in the casting process, has high strength, is easy to weld and is easy to carry out color oxidation treatment on the surface. The die-casting performance requirement can be met, the surface can be subjected to color oxidation treatment, the welding performance is good, and t6 hardening treatment can be performed.
Description
Technical Field
The invention relates to the technical field of aluminum alloy, in particular to a novel aluminum alloy material, a thin-wall part and a metal hand die.
Background
The existing aluminum alloy for die casting has the problems of unsmooth flow and difficult demoulding when the product is die-cast and formed due to the fact that the amount of various metal components added in the existing aluminum alloy is too much or too little, is not suitable for welding, is easy to generate air holes after being formed and welded, causes the product to be weak, and is easy to leak water and air, greatly weakens the work performance and the service life of the product, and increases the production cost. Meanwhile, products produced by the existing die-casting aluminum alloy can not be subjected to surface oxidation treatment or can only be subjected to black oxidation treatment, and can not be subjected to various color oxidations like section aluminum.
In high-end manufacturing fields, some aluminum alloy thin-wall parts or products with surfaces needing color oxidation treatment are usually manufactured by machining a whole aluminum plate into a shape required by design, or stamping and forming a thin sheet, or gravity casting, but the methods have the defects of low efficiency, high cost, difficulty in processing structural complex parts and the like. The ultrathin-wall aluminum alloy metal hand die is a common aluminum alloy thin-wall part, and has higher structural strength and better temperature-raising and heat-dissipating performance than the conventional ceramic metal hand die. The ultra-thin wall aluminum alloy metal hand former is suitable for the processing fields of various PU, PVC, nitrile, latex, films and other gloves. The first generation aluminum alloy metal hand mold is manufactured by a common gravity casting process, and except that the process is backward and the efficiency is low, the product produced by the production process is easy to generate sand holes, has more internal defects and has poorer consistency of the wall thickness of the product, thereby reducing the service life of the metal hand mold and increasing the production cost.
Therefore, the existing aluminum alloy material has the problems of unsmooth flow and difficult demoulding during the die-casting forming of the product, easy generation of air holes during the welding after the forming, difficult surface treatment development, difficult surface color oxidation treatment and the like, and a method for solving the problems is not provided in the industry, so that the development is urgently needed.
Disclosure of Invention
The invention aims to provide a novel aluminum alloy material, a thin-wall part and a metal hand die, and aims to solve the technical problems that the aluminum alloy material in the prior art is not smooth in flowing and difficult to demould when a product is subjected to die-casting forming, pores are easily generated during welding after forming, surface treatment is not easy to develop, surface color oxidation treatment is not easy to perform, and the like. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a novel aluminum alloy material which comprises the following components in percentage by weight: 0.1 to 0.7 percent; iron: 0.25 to 0.6 percent; copper: 0.05 to 0.35 percent; manganese: 0.02-0.14%; magnesium: 0.3-2.6%; chromium: 0.02-0.37%; zinc: 0.05 to 0.2 percent; titanium: 0 to 0.14 percent; the rest is aluminum and a small amount of impurities.
Preferably, the novel aluminum alloy material further comprises the following components in percentage by weight: 0.001-0.007%; silver: 0.005-0.013%; calcium: 0.005-0.007%; cadmium: 0-0.001% and molybdenum: 0 to 0.0005 percent.
Preferably, the novel aluminum alloy material further comprises the following components in percentage by weight: 0 to 0.002 percent; beryllium: 0.0007-0.0009%; bismuth: 0.0005-0.0015%; cerium: 0 to 0.003 percent; cobalt: 0.003-0.006%; gallium: 0.01 to 0.03 percent; lanthanum: 0-0.0003%; lithium: 0-0.0002%; sodium: 0.001-0.003%; lead: 0.003-0.007%; antimony: 0.01 to 0.02 percent; tin: 0 to 0.001 percent; strontium: 0 to 0.0001 percent; vanadium: 0.0003-0.0006%; zirconium: 0.001-0.005%; hafnium: 0.004-0.008%; scandium: 0-0.002% and yttrium: 0.0005-0.0015%.
The invention also provides a thin-wall part prepared from any one of the novel aluminum alloy materials.
The invention also provides a metal hand die prepared from any one of the novel aluminum alloy materials.
The invention has the beneficial effects that: the invention provides a novel aluminum alloy material with brand new components, which fully utilizes the physical characteristics of silicon and magnesium and avoids the defects of unfavorable surface oxidation and welding of the silicon and the magnesium by accurately controlling the contents of iron, copper, manganese, chromium, titanium and zinc and matching with various trace metal elements, so that the molten aluminum alloy is more compact in the casting process, is easier to flow under the condition of certain temperature, is not easy to generate sand holes and internal defects, has high structural strength compared with products produced by common pure aluminum or aluminum alloy, is easy to weld, and is easy to carry out surface color oxidation treatment, thereby prolonging the final service life of metal hand molds and other thin-wall products. The die-casting performance requirement can be met, the surface can be subjected to color oxidation treatment, the welding performance is good, and t6 hardening treatment can be performed.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The invention provides a novel aluminum alloy material which comprises the following components in percentage by weight: 0.1 to 0.7 percent; iron (Fe): 0.25 to 0.6 percent; copper (Cu): 0.05 to 0.35 percent; manganese (Mn): 0.02-0.14%; magnesium (Mg): 0.3-2.6%; chromium (Cr): 0.02-0.37%; zinc (Zn): 0.05 to 0.2 percent; titanium (Ti): 0 to 0.14 percent; the rest is aluminum and a small amount of impurities. Preferably, aluminum (Al): 94.77 to 99.21 percent.
The novel aluminum alloy material is added with alloy components such as silicon, iron, copper, manganese, magnesium, chromium, titanium, zinc and the like, and is obtained through a large number of tests and screens by the applicant.
Wherein, silicon can make the aluminum alloy flow well, reduce shrinkage cavity and improve pressure resistance. Further, the weldability can be improved, the thermal expansion coefficient can be reduced, and the machinability is deteriorated although the wear resistance can be improved by adding a large amount. The experiment of the invention finds that the comprehensive performance is best when the adding amount of silicon is 0.1-0.7%.
The invention also adds a small amount of iron, which can reduce shrinkage cavity of the aluminum alloy and make the crystal fine.
The present invention also adds copper to improve the mechanical properties and machinability of the aluminum alloy, but considering that the addition of copper causes deterioration of corrosion resistance and melt fluidity, causing thermal crack, the addition amount of copper is determined by experiment to be 0.05-0.35%.
In addition, the invention also adds manganese element according to the iron content calculation, further miniaturizes the crystal and prevents the shrinkage cavity.
In particular, the magnesium element is added, and the magnesium can improve the mechanical property and the machinability of the aluminum alloy, but the melt fluidity and the pressure resistance are poor, and the thermal fracture is also obviously increased. Therefore, the inventors determined the content of magnesium element to be 0.3 to 2.6% through a large number of experiments. The mechanical properties of the aluminum alloy can be improved by adding the zinc and the magnesium together, but the corrosion resistance is reduced, and shrinkage cavities are easy to generate if the adding amount is too much, and the comprehensive performance is best when the adding amount of the zinc is 0.05-0.2 percent according to the invention.
The invention also adds 0-0.14% titanium, which can make the crystal of aluminum alloy fine and improve mechanical property.
Furthermore, the invention also adds chromium which is a common additive element in Al-Mg-Si series, Al-Mg-Zn series and Al-Mg series alloys. Chromium has a solubility of 0.8% in aluminum at 600 c and is substantially insoluble at room temperature. Chromium forms intermetallic compounds such as (CrFe) Al7 and (CrMn) Al12 in aluminum, so that nucleation and growth processes of recrystallization are hindered, the alloy is strengthened to a certain extent, the toughness of the alloy can be improved, and stress corrosion cracking sensitivity can be reduced. But the quenching sensitivity is increased, so that the anodic oxide film is yellow. The amount added in the aluminum alloy is generally not more than 0.37%, and decreases with increasing transition elements in the alloy.
The invention fully utilizes the physical characteristics of silicon and magnesium, avoids the defects of unfavorable surface oxidation and welding of the silicon and the magnesium, ensures that the aluminum alloy melt is more compact in the casting process, is easier to flow under the condition of certain temperature, is not easy to generate sand holes and internal defects, has higher structural strength than products produced by common pure aluminum or aluminum alloy, is easy to weld, and is easy to carry out surface color oxidation treatment, thereby prolonging the final service life of metal hand molds and other thin-wall products.
As an optional embodiment, the novel aluminum alloy material further comprises the following composition, in weight percent, nickel (Ni): 0.001-0.007%; silver (Ag): 0.005-0.013%; calcium (Ca): 0.005-0.007%; cadmium (Cd): 0 to 0.001 percent; molybdenum (Mo): 0 to 0.0005 percent. The trace elements can effectively improve the structural strength of the aluminum alloy melt casting product and facilitate welding and fixing.
As an optional embodiment, the novel aluminum alloy material further comprises the following composition, in weight percent, boron (B): 0 to 0.002 percent; beryllium (Be): 0.0007-0.0009%; bismuth (Bi): 0.0005-0.0015%; cerium (Ce): 0 to 0.003 percent; cobalt (Co): 0.003-0.006%; gallium (Ga): 0.01 to 0.03 percent; lanthanum (La): 0-0.0003%; lithium (Li): 0-0.0002%; sodium (Na): 0.001-0.003%; lead (Pb): 0.003-0.007%; antimony (Sb): 0.01 to 0.02 percent; tin (Sn): 0 to 0.001 percent; strontium (Sr): 0 to 0.0001 percent; vanadium (V): 0.003-0.006%; zirconium (Zr): 0.001-0.005%; hafnium (Hf): 0.004-0.008%; scandium (Sc): 0-0.002% and yttrium (Y): 0.0005-0.0015%. Through adding above-mentioned microelement, further make the aluminium alloy melt compact in casting process, more be difficult for producing sand eye and internal defect, product structural strength is higher, changes the welding, is more convenient for carry out the colored oxidation treatment in surface. The die-casting performance requirement can be met, the surface can be subjected to color oxidation treatment, the welding performance is good, and t6 hardening treatment can be performed.
The invention also provides a thin-wall part prepared from the novel aluminum alloy material. The production of the thin-wall part generally needs surface oxidation processing, and compared with the products produced by common pure aluminum or aluminum alloy, the product has high structural strength, is easy to weld and carry out surface color oxidation treatment, thereby prolonging the service life.
The invention also provides a metal hand die prepared from the novel aluminum alloy material. Compared with the product produced by common pure aluminum or aluminum alloy, the hand mold has high structural strength, is easy to weld and carry out surface color oxidation treatment, thereby prolonging the service life.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (5)
1. The novel aluminum alloy material is characterized by comprising the following components in percentage by weight: 0.1 to 0.7 percent; iron: 0.25 to 0.6 percent; copper: 0.05 to 0.35 percent; manganese: 0.02-0.14%; magnesium: 0.3-2.6%; chromium: 0.02-0.37%; zinc: 0.05 to 0.2 percent; titanium: 0 to 0.14 percent; the rest is aluminum and a small amount of impurities.
2. The novel aluminum alloy material of claim 1, further comprising the following composition, in weight percent, nickel: 0.001-0.007%; silver: 0.005-0.013%; calcium: 0.005-0.007%; cadmium: 0-0.001% and molybdenum: 0 to 0.0005 percent.
3. The novel aluminum alloy material of claim 2, further comprising, in weight percent, boron: 0 to 0.002 percent; beryllium: 0.0007-0.0009%; bismuth: 0.0005-0.0015%; cerium: 0 to 0.003 percent; cobalt: 0.003-0.006%; gallium: 0.01 to 0.03 percent; lanthanum: 0-0.0003%; lithium: 0-0.0002%; sodium: 0.001-0.003%; lead: 0.003-0.007%; antimony: 0.01 to 0.02 percent; tin: 0 to 0.001 percent; strontium: 0 to 0.0001 percent; vanadium: 0.003-0.006%; zirconium: 0.001-0.005%; hafnium: 0.004-0.008%; scandium: 0-0.002% and yttrium: 0.0005-0.0015%.
4. A thin-walled member characterized in that it is produced by the novel aluminum alloy material according to any one of claims 1 to 3.
5. A metal hand mold, characterized in that it is produced by the novel aluminum alloy material according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110195595.0A CN113005335A (en) | 2021-02-22 | 2021-02-22 | Novel aluminum alloy material, thin-wall part and metal hand die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110195595.0A CN113005335A (en) | 2021-02-22 | 2021-02-22 | Novel aluminum alloy material, thin-wall part and metal hand die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113005335A true CN113005335A (en) | 2021-06-22 |
Family
ID=76405210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110195595.0A Pending CN113005335A (en) | 2021-02-22 | 2021-02-22 | Novel aluminum alloy material, thin-wall part and metal hand die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113005335A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457264A (en) * | 2022-01-28 | 2022-05-10 | 邹平宏发铝业科技有限公司 | 5-series aluminum alloy strip for stamping lamp and processing method thereof |
| CN115404037A (en) * | 2022-09-29 | 2022-11-29 | 东莞市纳百川电子科技有限公司 | Metal hand die weld joint filling material, preparation method and weld joint treatment process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS572857A (en) * | 1980-06-09 | 1982-01-08 | Ryobi Ltd | Aluminum alloy for die casting |
| EP1130125A2 (en) * | 2000-03-02 | 2001-09-05 | Kabushiki Kaisha Daiki Aluminium Kogyosho | Highly heat-conductive alloy for pressure casting and cast alloy thereof |
| CN103602863A (en) * | 2013-11-29 | 2014-02-26 | 辽宁忠旺集团有限公司 | Process for producing thin-walled aluminum alloy tube material |
| CN105291331A (en) * | 2015-12-07 | 2016-02-03 | 东莞市柏茂五金制品有限公司 | Metal glove mold |
| CN206796349U (en) * | 2017-03-20 | 2017-12-26 | 东莞市柏茂五金制品有限公司 | A kind of novel metal gloves mould |
| US20190055628A1 (en) * | 2016-03-01 | 2019-02-21 | Ksm Castings Group Gmbh | Al-casting alloy |
| CN111560546A (en) * | 2020-04-29 | 2020-08-21 | 广东凤铝铝业有限公司 | Aluminum alloy with high crushing performance and preparation method of section bar of aluminum alloy |
| CN212312514U (en) * | 2020-07-17 | 2021-01-08 | 江苏新曙锻造有限公司 | Glove mold |
-
2021
- 2021-02-22 CN CN202110195595.0A patent/CN113005335A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS572857A (en) * | 1980-06-09 | 1982-01-08 | Ryobi Ltd | Aluminum alloy for die casting |
| EP1130125A2 (en) * | 2000-03-02 | 2001-09-05 | Kabushiki Kaisha Daiki Aluminium Kogyosho | Highly heat-conductive alloy for pressure casting and cast alloy thereof |
| CN103602863A (en) * | 2013-11-29 | 2014-02-26 | 辽宁忠旺集团有限公司 | Process for producing thin-walled aluminum alloy tube material |
| CN105291331A (en) * | 2015-12-07 | 2016-02-03 | 东莞市柏茂五金制品有限公司 | Metal glove mold |
| US20190055628A1 (en) * | 2016-03-01 | 2019-02-21 | Ksm Castings Group Gmbh | Al-casting alloy |
| CN206796349U (en) * | 2017-03-20 | 2017-12-26 | 东莞市柏茂五金制品有限公司 | A kind of novel metal gloves mould |
| CN111560546A (en) * | 2020-04-29 | 2020-08-21 | 广东凤铝铝业有限公司 | Aluminum alloy with high crushing performance and preparation method of section bar of aluminum alloy |
| CN212312514U (en) * | 2020-07-17 | 2021-01-08 | 江苏新曙锻造有限公司 | Glove mold |
Non-Patent Citations (3)
| Title |
|---|
| 崔启为等: "改善喷涂用铝合金型材表面质量的生产工艺探究", 《热处理技术与装备》 * |
| 罗启全: "《铝合金熔炼与铸造》", 30 September 2002, 广东科技出版社 * |
| 胡又牧等: "《胶乳应用技术》", 31 October 1990, 化学工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457264A (en) * | 2022-01-28 | 2022-05-10 | 邹平宏发铝业科技有限公司 | 5-series aluminum alloy strip for stamping lamp and processing method thereof |
| CN115404037A (en) * | 2022-09-29 | 2022-11-29 | 东莞市纳百川电子科技有限公司 | Metal hand die weld joint filling material, preparation method and weld joint treatment process |
| CN115404037B (en) * | 2022-09-29 | 2023-08-15 | 东莞市纳百川电子科技有限公司 | Metal hand die weld joint filling material, preparation method and weld joint treatment process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102597784B1 (en) | A aluminum alloy and for die casting and method for manufacturing the same, die casting method | |
| CN113005335A (en) | Novel aluminum alloy material, thin-wall part and metal hand die | |
| CN105296818A (en) | Aluminum alloy and preparation method and application thereof | |
| CN105220042A (en) | A kind of magnesium alloy and its preparation method and application | |
| CN112626391B (en) | Low-silicon high-heat-conductivity die-casting aluminum alloy and preparation method thereof | |
| CN114457263A (en) | High-strength high-toughness high-heat-conductivity die-casting aluminum alloy and manufacturing method thereof | |
| CN104593645A (en) | Aluminum alloy pressure-cast door plank and preparation method thereof | |
| CN1483848A (en) | Low pressure casting aluminium alloy for cylinder cap of minicar engine | |
| CN113862523A (en) | Al-Mn series die-casting alloy and preparation method and application thereof | |
| CN113151712A (en) | Aluminum alloy and preparation method thereof | |
| CN113103690A (en) | Ni-plated brazing aluminum alloy composite plate and preparation method and application thereof | |
| CN109988946A (en) | A kind of vacuum brazing fin material and preparation method thereof | |
| US20240011130A1 (en) | Aluminum alloy, electronic device, and aluminum alloy preparation method | |
| EP2692883B1 (en) | Mg-al-ca-based master alloy for mg alloys, and a production method therefor | |
| CN106334720B (en) | A kind of mold and manufacturing method improving aluminium alloy punching press profile internal organizational structure | |
| CN104259433B (en) | A kind of casting method of improving titanium/aluminium solid-liquid compound interface plasticity and toughness | |
| CN107937768B (en) | Extrusion casting aluminum alloy material and preparation method thereof | |
| CN113454257B (en) | Magnesium alloy, piston made of the magnesium alloy and method for manufacturing the piston | |
| CN112981190A (en) | Aluminum alloy for die casting and method for manufacturing cast aluminum alloy using the same | |
| JP3840400B2 (en) | Method for producing semi-melt molded billet of aluminum alloy for transportation equipment | |
| WO2007114345A1 (en) | DIECASTING Zn ALLOY, PROCESS FOR PRODUCTION THEREOF, AND Al MASTER ALLOY FOR DIECASTING ALLOY | |
| JP3676723B2 (en) | Method for producing semi-melt molded billet of aluminum alloy for transportation equipment | |
| CN111286654A (en) | High-performance magnesium alloy and preparation method thereof | |
| KR100672839B1 (en) | Heat resistant and high oxidation resistant mold material for Cu-alloy die casting and hot-working | |
| KR102572624B1 (en) | High elongation die casting alloy composition for non-heat treatment |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210622 |