JPH0472889B2 - - Google Patents
Info
- Publication number
- JPH0472889B2 JPH0472889B2 JP60156282A JP15628285A JPH0472889B2 JP H0472889 B2 JPH0472889 B2 JP H0472889B2 JP 60156282 A JP60156282 A JP 60156282A JP 15628285 A JP15628285 A JP 15628285A JP H0472889 B2 JPH0472889 B2 JP H0472889B2
- Authority
- JP
- Japan
- Prior art keywords
- lithium
- aluminum
- atmosphere
- alloy
- pieces
- 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.)
- Expired - Lifetime
Links
- 229910052744 lithium Inorganic materials 0.000 claims description 47
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 46
- 229910052782 aluminium Inorganic materials 0.000 claims description 27
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 27
- 238000005096 rolling process Methods 0.000 claims description 8
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 claims description 7
- 239000001989 lithium alloy Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 229910001148 Al-Li alloy Inorganic materials 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 description 3
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 3
- 229910001947 lithium oxide Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Description
【発明の詳細な説明】
(イ) 発明の目的
〔産業上の利用分野〕
この発明は航空機の構造材料として用いられ、
或いは、軽量でしかも強靭な材料を求める各種産
業分野から期待の持たれているリチウム・アルミ
ニウム合金に係り、特に、微細な割れの発生を抑
制したアルミニウム・リチウム合金の製造法に関
するものである。[Detailed description of the invention] (a) Purpose of the invention [Field of industrial application] This invention is used as a structural material for aircraft,
Alternatively, the present invention relates to lithium-aluminum alloys, which have high expectations from various industrial fields that require lightweight yet strong materials, and in particular, relates to a method for producing aluminum-lithium alloys that suppresses the occurrence of microscopic cracks.
従来、アルミニウム・リチウム合金の製造は、
耐火るつぼ中でアルミニウムを溶融した後、別
途、大気と反応させないため油浸けしたリチウム
片を１バツチ毎に正確に秤量した後アルミニウム
に溶解させるもので、溶解時の雰囲気としては、
酸化防止用の気体、例えば弗化硫黄ガスを溶融金
属表面に吹きつけるのが一般的であつた。
Traditionally, the production of aluminum-lithium alloys
After melting the aluminum in a fireproof crucible, each batch of lithium pieces soaked in oil is separately weighed accurately to prevent it from reacting with the atmosphere, and then melted into the aluminum.The atmosphere during melting is as follows:
It was common practice to spray an antioxidizing gas, such as sulfur fluoride gas, onto the surface of the molten metal.
従つて、従来の技術においてはプロセス一切を
大気中で処理するため取扱いが簡便であるが、リ
チウムと大気の接触を完全に絶つことは極めて困
難で、このため、酸化リチウムや炭酸リチウム等
の化合物を合金中に生成析出し、これら生成物を
基点または起因として微細な割れを生じ易く、構
造材料としての応用上難点となつていた。更に、
アルミニウム量１バツチ毎に溶解すべき適切量の
リチウムを秤量する必要があるが、リチウムの取
扱いは不活性ガス雰囲気のグローブボツクス中で
行わねばならないため、正確量のリチウム採取作
業は煩雑であるなどの問題があつた。
Therefore, in conventional technology, all processes are carried out in the atmosphere, which makes handling easier, but it is extremely difficult to completely eliminate contact between lithium and the atmosphere, and for this reason, compounds such as lithium oxide and lithium carbonate are formed and precipitated in the alloy, and these products tend to cause microscopic cracks, making it difficult to use as a structural material. Furthermore,
It is necessary to weigh the appropriate amount of lithium to be melted for each batch of aluminum, but since lithium must be handled in a glove box with an inert gas atmosphere, extracting an accurate amount of lithium is complicated. There was a problem.
この発明は上記の如き事情に鑑みてなされたも
のであつて、リチウムに適当な前処理を施すこと
により、リチウムの酸化を防止することができ、
しかも、大気中で溶解作業を行いうるリチウム・
アルミニウム合金の製造法を提供することを目的
とするものである。 This invention was made in view of the above circumstances, and it is possible to prevent oxidation of lithium by subjecting lithium to an appropriate pretreatment.
Moreover, lithium can be melted in the atmosphere.
The purpose of the present invention is to provide a method for producing aluminum alloy.
(ロ) 発明の構成
〔問題を解決するための手段〕
この目的に対応して、この発明のアルミニウ
ム・リチウム合金の製造法は、不活性ガス雰囲気
中でリチウムを圧延したのち、前記圧延されたリ
チウム板を機械加工にて一定形状の多数のリチウ
ム片とし、更に、真空雰囲気中において前記リチ
ウム片の表面にアルミニウムを蒸着し作成したア
ルミニウム被覆リチウム片を大気中において溶融
アルミニウム中に添加溶解し合金化することを特
徴としている。(B) Structure of the Invention [Means for Solving the Problem] Corresponding to this object, the method for producing an aluminum-lithium alloy of the present invention includes rolling lithium in an inert gas atmosphere, and then rolling the rolled lithium alloy. A lithium plate is machined into a large number of lithium pieces of a certain shape, and aluminum is then deposited on the surface of the lithium pieces in a vacuum atmosphere. The aluminum-coated lithium pieces are then added to molten aluminum and dissolved in the atmosphere to form an alloy. It is characterized by becoming
圧延後機械加工により一定形状としたリチウム
片はその重量が一定となる。そして、真空蒸着に
よりアルミニウムの蒸着されたアルミニウム被覆
リチウム片は、そのアルミニウム被膜によりリチ
ウム片の大気中の酸素及び炭酸ガスとの接触が防
げられ、従つて、大気中において溶融アルミニウ
ム中に添加溶解しても酸化リチウムや炭酸リチウ
ム等の化合物を生成しない。
A lithium piece that has been machined into a certain shape after rolling has a constant weight. The aluminum coated lithium piece, on which aluminum has been deposited by vacuum evaporation, prevents the lithium piece from coming into contact with oxygen and carbon dioxide gas in the atmosphere due to the aluminum coating. It does not produce compounds such as lithium oxide or lithium carbonate even when
以下、この発明の詳細を一実施例を示す図面に
ついて説明する。
Hereinafter, details of the present invention will be explained with reference to the drawings showing one embodiment.
第１図において符号１は圧延後のリチウム板で
あり、このリチウム板は不活性ガス雰囲気中でリ
チウムを圧延し、板厚１〜５mmとしたものであ
る。尚、圧延に供されるリチウム材が油中に保存
されている場合は洗浄、乾燥し表面に付着した油
脂を除去したのち圧延する。 In FIG. 1, reference numeral 1 indicates a lithium plate after rolling, and this lithium plate is obtained by rolling lithium in an inert gas atmosphere to a thickness of 1 to 5 mm. If the lithium material to be rolled is stored in oil, it is washed and dried to remove oil and fat adhering to the surface before rolling.
次に、圧延されたリチウム板１を公知の機械加
工手段、例えばプレスによる打抜き等により一定
形状のリチウム片２を多数製作する。 Next, a large number of lithium pieces 2 of a fixed shape are manufactured from the rolled lithium plate 1 by known machining means, such as punching with a press.
次に、真空雰囲気中において前記リチウム片２
を並べ、その表面全域にアルミニウムを蒸着す
る。 Next, the lithium piece 2 is placed in a vacuum atmosphere.
are lined up and aluminum is deposited over the entire surface.
第２図はアルミニウム蒸着後のリチウム片の断
面を示すもので、リチウム片２の全表面にアルミ
ニウム被膜３が0.1〜0.5mmの厚みに蒸着される。
アルミニウム被覆後はリチウムが大気と絶縁され
るため、大気中にアルミニウム被覆リチウム片５
を取り出して差し支えない。 FIG. 2 shows a cross section of the lithium piece after aluminum deposition, and an aluminum coating 3 is deposited on the entire surface of the lithium piece 2 to a thickness of 0.1 to 0.5 mm.
After coating with aluminum, lithium is insulated from the atmosphere, so there are aluminum-coated lithium pieces5 in the atmosphere.
You can take it out.
次に、大気中において別途、アルミニウムをア
ルミナその他の耐火物製るつぼ中で溶解した後、
前記アルミニウム被覆リチウム片５を順次少量づ
つ適量添加し攪拌溶解することによつてアルミニ
ウム・リチウム合金を製造する。 Next, after separately melting aluminum in a crucible made of alumina or other refractory material in the atmosphere,
An aluminum-lithium alloy is produced by sequentially adding small amounts of the aluminum-coated lithium pieces 5 and dissolving them with stirring.
(ハ) 発明の効果
リチウムは大気中の窒素、酸素、炭酸ガス、或
いは水と反応し易い物質であるため、合金製造
時、アルミニウムとの溶解工程において大気に接
触させないことが肝要であるが、プロセス一切を
不活性ガス雰囲気中で処理するには大規模な雰囲
気制御の装置を必要とする。本発明によれば、ア
ルミニウム被覆リチウム片を事前に製作し、これ
をアルミニウムに溶解させるため合金工程を大気
中で行うことができ、更に溶解時において酸化リ
チウムとか炭酸リチウム等の析出物を生成しない
ため、これら生成物を起因とする微細な割れの生
じないアルミニウム・リチウム合金を得ることが
できる。(c) Effects of the invention Since lithium is a substance that easily reacts with nitrogen, oxygen, carbon dioxide, or water in the atmosphere, it is important that it is not brought into contact with the atmosphere during the melting process with aluminum during alloy production. Performing all processes in an inert gas atmosphere requires large-scale atmosphere control equipment. According to the present invention, an aluminum-coated lithium piece is prepared in advance and the aluminum-coated lithium piece is melted into aluminum, so that the alloying process can be performed in the atmosphere, and furthermore, precipitates such as lithium oxide and lithium carbonate are not generated during melting. Therefore, it is possible to obtain an aluminum-lithium alloy that does not suffer from minute cracks caused by these products.
更に、アルミニウム被覆リチウム片を作成する
にあたつて、リチウムを圧延後一定形状に打抜い
たものを用いるので、個々のリチウム片の重量は
一定であり、従つて、合金製造時のバツチ毎のリ
チウム秤量作業の煩雑さが解消される。 Furthermore, in making aluminum-coated lithium pieces, lithium is rolled and then punched into a certain shape, so the weight of each lithium piece is constant, and therefore the weight of each batch during alloy production is constant. The complexity of lithium weighing work is eliminated.
第１図は圧延後のリチウム板とこのリチウム板
から打抜かれるリチウム片の説明図、及び第２図
はアルミニウム被覆リチウム片の縦断面図であ
る。
１…リチウム板、２…リチウム片、３…アルミ
ニウム被覆、５…アルミニウム被覆リチウム片。
FIG. 1 is an explanatory diagram of a lithium plate after rolling and a lithium piece punched from the lithium plate, and FIG. 2 is a longitudinal cross-sectional view of an aluminum-coated lithium piece. DESCRIPTION OF SYMBOLS 1...Lithium plate, 2...Lithium piece, 3...Aluminum coating, 5...Aluminum coated lithium piece.
Claims (1)
ち、前記圧延されたリチウム板を機械加工にて一
定形状の多数のリチウム片とし、更に、真空雰囲
気中において前記リチウム片の表面にアルミニウ
ムを蒸着し作成したアルミニウム被覆リチウム片
を大気中において溶融アルミニウム中に添加溶解
し合金化することを特徴とするアルミニウム・リ
チウム合金の製造法。1 After rolling lithium in an inert gas atmosphere, the rolled lithium plate is machined into a large number of lithium pieces of a certain shape, and aluminum is further deposited on the surface of the lithium pieces in a vacuum atmosphere. A method for producing an aluminum-lithium alloy, which comprises adding and melting aluminum-coated lithium pieces into molten aluminum in the atmosphere to form an alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15628285A JPS6217143A (en) | 1985-07-16 | 1985-07-16 | Manufacture of aluminum-lithium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15628285A JPS6217143A (en) | 1985-07-16 | 1985-07-16 | Manufacture of aluminum-lithium alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6217143A JPS6217143A (en) | 1987-01-26 |
| JPH0472889B2 true JPH0472889B2 (en) | 1992-11-19 |
Family
ID=15624411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15628285A Granted JPS6217143A (en) | 1985-07-16 | 1985-07-16 | Manufacture of aluminum-lithium alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6217143A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160312335A1 (en) * | 2013-12-17 | 2016-10-27 | Mitsubishi Materials Corporation | METHOD FOR MANUFACTURING Ca-CONTAINING COPPER ALLOY |
| CN110195174B (en) * | 2019-05-28 | 2021-10-15 | 昆明理工大学 | Preparation method of aluminum-lithium intermediate alloy |
| US11168384B2 (en) * | 2019-07-26 | 2021-11-09 | Fmc Lithium Usa Corp. | Process of preparing a lithium aluminum alloy |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4926108A (en) * | 1972-07-05 | 1974-03-08 |
-
1985
- 1985-07-16 JP JP15628285A patent/JPS6217143A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4926108A (en) * | 1972-07-05 | 1974-03-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6217143A (en) | 1987-01-26 |
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