JPH07207350A - Melting method of al alloy scrap - Google Patents
Melting method of al alloy scrapInfo
- Publication number
- JPH07207350A JPH07207350A JP328094A JP328094A JPH07207350A JP H07207350 A JPH07207350 A JP H07207350A JP 328094 A JP328094 A JP 328094A JP 328094 A JP328094 A JP 328094A JP H07207350 A JPH07207350 A JP H07207350A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- scrap
- alloy product
- scraps
- construction
- 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.)
- Withdrawn
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
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はＡｌ合金屑の溶解法に関
し、特に建築用Ａｌ合金製品屑と自動車用Ａｌ合金製品
屑を溶解原料として有効利用し、Ｐｂ含有率の低いＡｌ
合金として再生する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for melting Al alloy scraps, and more particularly, to effectively use Al alloy product scraps for construction and Al alloy product scraps for automobiles as a melting raw material, and to reduce Al having a low Pb content.
The present invention relates to a method of regenerating as an alloy.
【０００２】[0002]
【従来の技術】Ａｌ合金は軽量で加工性、耐候性、耐食
性等に優れたものであることから、アルミサッシ等の建
築用材料、運輸部品材料あるいは食品包装材料等として
幅広く利用されている。また、Ａｌ合金製品において
は、鉄基合金等に比べて添加される合金元素の種類や量
が相対的に少ないので、ボーキサイト等の鉱石から新た
に地金を製造するよりも、Ａｌ合金製品屑を再溶解して
用いる方が有利であり、後者のエネルギーコストは前者
の約３％で済むのでリサイクル性に適したものといえ
る。2. Description of the Related Art Since Al alloys are lightweight and have excellent workability, weather resistance and corrosion resistance, they are widely used as building materials such as aluminum sashes, transportation parts materials, food packaging materials and the like. Further, in Al alloy products, the type and amount of alloying elements added are relatively small compared to iron-based alloys and the like, so Al alloy product scraps are produced rather than newly producing ingots from ores such as bauxite. It is advantageous to re-dissolve and use the latter, and the energy cost of the latter is about 3% of the former, so it can be said that it is suitable for recyclability.
【０００３】そこで運輸部品分野および建築分野に着眼
すると、現在運輸分野で多用されているエンジン、ホイ
ールなどの鋳物製品や、ダイキヤスト部品は、廃車から
選別回収し、再溶解することにより元の鋳物やダイキヤ
スト製品としてリサイクルされている。また今後その排
出量の大幅増大が期待される自動車用Ａｌ合金屑とし
て、車体用展伸材（ボンネット、トランクリッド、ドア
ー、ボディー等）に用いられた板や押出材が挙げられ
る。Therefore, focusing on the transportation parts field and the construction field, casting products such as engines and wheels, which are now widely used in the transportation field, and die cast parts are sorted and recovered from scrapped vehicles and remelted to obtain the original castings and products. It is recycled as a die cast product. Further, aluminum alloy scraps for automobiles, whose emission amount is expected to increase greatly in the future, include plates and extruded materials used for wrought materials for vehicle bodies (bonnets, trunk lids, doors, bodies, etc.).
【０００４】これら車体用展伸材としては、強度、靭
性、加工性、耐食性等の要求特性を備えたＪＩＳ６００
０系Ａｌ合金が多用されている。そこで、これら自動車
用Ａｌ合金性展伸材についても再溶解しＪＩＳ６０００
系Ａｌ合金として再生することが考えられるが、これら
自動車用Ａｌ合金製展伸材には、殆どの場合ファション
性や耐候性向上等のため塗装して用いられており、この
様なＪＩＳ６０００系Ａｌ合金製品屑を溶解すると塗料
中に含まれるＰｂＯがそのまま、あるいはＡｌにより還
元されてＰｂとしてＡｌ合金溶湯中に混入し、再生溶湯
のＰｂが増大するため、ＪＩＳ６０００系Ａｌ合金とし
てリサイクルできなくなる。As the wrought materials for vehicle bodies, JIS 600 having required properties such as strength, toughness, workability, corrosion resistance and the like.
0-based Al alloys are often used. Therefore, these aluminum alloy wrought materials for automobiles are also remelted and JIS6000
Although it can be considered to be regenerated as a system Al alloy, in most of these wrought products made of Al alloys for automobiles, it is used by coating to improve fashionability and weather resistance. When the alloy product scraps are melted, PbO contained in the paint is left as it is, or is reduced by Al and mixed into the Al alloy melt as Pb, and the Pb of the recycled melt is increased, so that it cannot be recycled as a JIS6000 series Al alloy.
【０００５】こうしたＰｂ量増大への対応策としては、 (1) ＰｂがＡｌ合金溶湯よりも比重（密度）が大きいこ
とを利用し、Ａｌ合金溶湯を静止保持することによりＰ
ｂを底部に沈降させ、上澄みのＡｌ合金溶湯を汲み出す
方法、および (2) 特開平５−１７８５６号公報や特開平２−３９５６
５号公報に記載されている様に、Ａｌ合金製展伸材を加
熱処理し、該展伸材中のＰｂを表面に拡散移行せしめ、
その後Ｐｂリッチな表層部を機械的に切削除去する方法
が知られている。As a measure against such an increase in the amount of Pb, (1) Pb has a larger specific gravity (density) than the molten Al alloy, and the molten Al alloy is held stationary.
b) is settled to the bottom and the supernatant Al alloy melt is pumped out, and (2) JP-A-5-17856 and JP-A-2-3956.
As described in Japanese Patent Publication No. 5, a wrought material made of Al alloy is heat-treated to diffuse and transfer Pb in the wrought material to the surface,
After that, a method of mechanically removing the Pb-rich surface layer portion by cutting is known.
【０００６】しかしながら自動車用Ａｌ合金製品屑の全
てに対して上記の様な処理を施すことは、コスト的にも
無理であり、そのためＰｂ含有率の高い上記の様な自動
車用Ａｌ合金製品の大部分は、鉄鋼用精錬剤等の２次原
料として利用されている程度であり、Ａｌ合金製品とし
て再生率は非常に低いのが実情である。However, it is not possible to perform the above-mentioned treatment on all the scraps of Al alloy products for automobiles, and therefore, it is not possible to reduce the cost. The part is only used as a secondary raw material such as a refining agent for iron and steel, and in reality, the recycling rate as an Al alloy product is very low.
【０００７】一方、ＪＩＳ６０００系Ａｌ合金の他の用
途として、アルミサッシや外装板等の建築用Ａｌ合金製
品があり、これらは陽極酸化やアルマイト処理等により
耐食加工されることは多いが他の合金元素はあまり含ま
れておらず、従って、これらのＡｌ合金製品屑は再溶解
することによりアルミサッシ等の材料として比較的容易
に再生することができる。On the other hand, other applications of JIS6000 series Al alloys include aluminum alloy products for construction such as aluminum sashes and exterior plates, which are often subjected to corrosion resistance processing such as anodic oxidation and alumite treatment, but other alloys. Since it does not contain much elements, these Al alloy product scraps can be relatively easily regenerated as a material such as an aluminum sash by remelting.
【０００８】[0008]
【発明が解決しようとする課題】本発明は上記の様な事
情に着目してなされたものであって、その目的は、Ｐｂ
含有率の高い自動車用Ａｌ合金製品屑の特性と、Ｐｂ含
有率の低い自動車用Ａｌ合金製品屑の特性をうまく生か
し、それらを併用することにより有用なＡｌ合金として
再生することのできる技術を提供しようとするものであ
る。The present invention has been made in view of the above circumstances, and its purpose is to provide Pb
Providing a technology that makes good use of the characteristics of automotive Al alloy product scraps with a high content and the characteristics of automotive Al alloy product scraps with a low Pb content, and by reusing them as a useful Al alloy Is what you are trying to do.
【０００９】[0009]
【課題を解決するための手段】上記課題を達成した本発
明に係る溶解法の構成は、建築用Ａｌ合金製品屑と自動
車用Ａｌ合金製品屑を溶解原料の少なくとも一部として
併用し、自動車用Ａｌ合金製品屑中のＰｂ濃度を建築用
Ａｌ合金製品屑によって希釈することにより、Ｐｂ含有
率の低いＡｌ合金として再生するところに要旨を有する
ものである。The structure of the melting method according to the present invention, which has achieved the above-mentioned object, uses a combination of aluminum alloy product scraps for construction and Al alloy product scraps for automobiles as at least a part of the melting raw material, and It has a gist in that it is regenerated as an Al alloy having a low Pb content by diluting the Pb concentration in the Al alloy product waste with the building Al alloy product waste.
【００１０】[0010]
【作用】自動車用Ａｌ合金展伸製品屑の再溶解物中に
は、前述の如くに塗装由来して相当量のＰｂが不純元素
として混入し、その含有量は通常約５０〜１２０ｐｐｍ
にもなる。現在Ａｌ合金中のＰｂ含有率は、快削性Ａｌ
合金の様にＰｂを積極的に添加したものを除外すると、
物性に悪影響を及ぼすものとして４０ｐｐｍ以下に抑え
るのが好ましいと考えられており、こうした基準はＪＩ
Ｓ６０００系Ａｌ合金についても同様である。As described above, a considerable amount of Pb, which is derived from the coating, is mixed as an impure element in the remelted product of the Al alloy wrought product for automobiles, and the content thereof is usually about 50 to 120 ppm.
It also becomes. Currently, the Pb content in Al alloys is free-cutting Al.
Excluding alloys that are positively added with Pb, such as alloys,
It is considered that it is preferable to suppress the content to 40 ppm or less because it has an adverse effect on physical properties.
The same applies to the S6000 series Al alloy.
【００１１】ところがＡｌ合金溶湯内へ一旦混入したＰ
ｂの除去は極めて困難であり、前述の様な比重差を利用
した沈降法では、Ｐｂを上記の様なレベルまで低減する
ことは容易でない。そこで本発明者らは発想を転換し、
Ａｌ合金屑溶湯からＰｂを除去するのではなく、該Ａｌ
合金屑溶湯のＰｂ濃度を、Ｐｂ含有率の低い他のＡｌ合
金で希釈することによって、全体としてのＰｂ濃度を目
標レベルまで低減することを考えた。However, P once mixed in the molten Al alloy
It is extremely difficult to remove b, and it is not easy to reduce Pb to the above level by the sedimentation method utilizing the difference in specific gravity as described above. Therefore, the present inventors changed their ideas,
Instead of removing Pb from the Al alloy scrap melt,
It was considered to dilute the Pb concentration of the alloy scrap molten metal with another Al alloy having a low Pb content to reduce the overall Pb concentration to the target level.
【００１２】そのための具体策として第１に挙げられる
のは、Ｐｂを含まない（Ｐｂ含量が９９．７％程度以
下）のＡｌ新地金で希釈する方法であるが、この方法で
はＡｌ合金屑に対して大量のＡｌ地金を使用しなければ
ならないので、Ａｌ合金屑としての再生率は非常に低い
ものとなる。[0012] The first specific method therefor is a method of diluting with Pb-free (Pb content of about 99.7% or less) Al ingot. On the other hand, since a large amount of Al ingot must be used, the regeneration rate as Al alloy scrap is very low.
【００１３】そこで、Ｐｂ含有率の低い他のＡｌ合金製
品屑を希釈材として利用すれば、Ａｌ合金屑としての再
生率も高めることができると考え、その線に沿って様々
のＡｌ合金製品屑を模索した結果、建築用Ａｌ合金製品
屑がＰｂ濃度の希釈材として有効に活用できることを知
った。Therefore, if other Al alloy product scrap having a low Pb content is used as a diluent, it is possible to increase the regeneration rate as Al alloy scrap, and along this line, various Al alloy product scraps can be obtained. As a result of searching for, it was found that the aluminum alloy product waste for construction can be effectively used as a diluent for the Pb concentration.
【００１４】即ち建築用のアルミサッシや内・外装板等
として用いられるＡｌ合金は、陽極酸化処理やアルマイ
ト処理等が施されることがあっても不純物元素は殆ど添
加されておらず、特にＰｂ含有量は殆ど含まれていな
い。しかも製品屑としての回収量は現在のところ自動車
用Ａｌ合金製品屑の回収量に比べて極めて多量であり、
且つその成分系はＪＩＳ６０００系であって自動車用Ａ
ｌ合金と共通点を有している。That is, Al alloys used as aluminum sashes for construction and as interior / exterior plates, etc. are rarely added with impurity elements even if they are anodized or anodized. Almost no content is included. Moreover, the amount of recovery as product waste is currently much larger than the amount of recovery of automotive Al alloy product waste,
And its component system is JIS6000 series and is for automobile A
L alloy has common points.
【００１５】本発明はこうした知見を元にしてなされた
ものであって、塗料に由来して相当量のＰｂが混入して
くる自動車用Ａｌ合金製品屑を、Ｐｂ含有率の少ない建
築用Ａｌ合金製品屑と併用し、両者の配合比率をうまく
調整することによって、たとえばＪＩＳ６０００系Ａｌ
合金に要求される許容Ｐｂ含有率の要件を満たす様な低
ＰｂのＡｌ合金に再生するものであり、Ａｌ合金屑とし
ての不純物特性を活用し、トータルとして大量のＡｌ合
金屑を再生できることに成功したものである。The present invention has been made on the basis of these findings, and the aluminum alloy product scraps for automobiles, from which a considerable amount of Pb is mixed due to the paint, are used as an aluminum alloy for construction with a small Pb content. By using it in combination with product waste and adjusting the mixing ratio of both well, for example JIS6000 series Al
The alloy is regenerated into an Al alloy with a low Pb content that satisfies the requirements for the allowable Pb content required for the alloy, and it is possible to regenerate a large amount of Al alloy debris as a whole by utilizing the impurity characteristics of Al alloy debris. It was done.
【００１６】ちなみに従来から試みられているＡｌ合金
製品屑の再生では、同種の製品屑のみを選別して夫々を
溶解原料として再生するものであるが、本発明では、自
動車用Ａｌ合金製品屑と建築用Ａｌ合金製品屑という異
種の製品屑を併用し、Ｐｂ濃度の希釈という観点から建
築用Ａｌ合金製品屑を希釈材として有効に活用すること
によって、大量のＡｌ合金製品屑をＪＩＳ６０００系成
分組成の要件を満たすＡｌ合金に効率よく再生し得るこ
とになった。この場合、必要によっては成分調整のため
他の希釈材としてＡｌ地金を併用したり、或は更に他の
Ａｌ合金製品屑を少量添加することも勿論可能である。
またこれらＡｌ合金製品屑を含む原料を溶解した後は、
常法により精錬および微細介在物除去の為の濾過等を行
なって清浄化した後鋳造し、ＪＩＳ６０００系Ａｌ合金
材として支障なく再生することができる。By the way, in the conventional recycling of Al alloy product scraps, only the same kind of product scraps are sorted and each is recycled as a melting raw material. A large amount of Al alloy product scraps can be used as a JIS 6000-based component composition by combining different kinds of building waste Al alloy products and effectively using the building Al alloy product scraps as a diluent from the viewpoint of diluting the Pb concentration. It has become possible to efficiently regenerate an Al alloy satisfying the requirement of. In this case, it is of course possible to use Al ingot as another diluent for adjusting the composition, or to add a small amount of other Al alloy product scraps, if necessary.
Also, after melting the raw materials containing these Al alloy product scraps,
By a conventional method, refining and filtration for removing fine inclusions, etc. are performed to clean and then cast, and can be regenerated as a JIS 6000 Al alloy material without any trouble.
【００１７】[0017]
【実施例】次に本発明の実施例を示すが、本発明はもと
より下記実施例によって制限を受けるものではなく、前
後記の趣旨に適合し得る範囲で適当に変更を加えて実施
することも勿論可能であり、それらはいずれも本発明の
技術的範囲に含まれる。EXAMPLES Next, examples of the present invention will be shown, but the present invention is not limited by the following examples, and may be carried out with appropriate modifications within a range compatible with the gist of the preceding and following description. Of course, it is possible, and all of them are included in the technical scope of the present invention.
【００１８】実施例１ 原料として自動車用Ａｌ合金ボンネット材屑（ＪＩＳ６
０００系：塗料からのＰｂ混入量は１２０ｐｐｍ）１０
重量部と、アルマイト処理された建築用アルミサッシ屑
（ＪＩＳ６０００系：Ｐｂ量は１０ｐｐｍ以下）９０重
量部を、２０ｔ重油焚き反射炉に投入し、７５０℃で１
５分間大気溶解した。均一溶解後のＰｂ含有率は１０ｐ
ｐｍ以下であった。次いで、該溶湯内にＣｌ2 ガス吹き
込んで精錬（１００Ｎｌ／分×２０分）し、除滓後三井
金属製のチューブラーフィルター（１８本組）に通して
濾過し清浄化した。この溶湯を用いて半連続鋳造法によ
り４００mmt ×１２００mmw のスラブを鋳造し、次いで
熱間圧延および冷間圧延を順次行なって厚さ５mmのＡｌ
合金板を得た。Example 1 Al alloy bonnet material scraps for automobiles (JIS6
000 series: The amount of Pb mixed from the paint is 120 ppm) 10
Part by weight and 90 parts by weight of anodized aluminum sash for construction (JIS 6000 series: Pb content is 10 ppm or less) are charged into a 20t heavy oil-fired reverberatory furnace and the temperature is set to 1 at 750 ° C.
Dissolved in air for 5 minutes. Pb content after uniform dissolution is 10p
It was pm or less. Then, Cl 2 gas was blown into the molten metal for refining (100 Nl / min × 20 min), and after slag removal, it was filtered through a Mitsui Kinzoku tubular filter (18-piece set) for cleaning. A slab of 400 mm t × 1200 mm w was cast by semi-continuous casting method using this molten metal, and then hot rolling and cold rolling were sequentially performed to form an aluminum plate having a thickness of 5 mm.
An alloy plate was obtained.
【００１９】得られたＡｌ合金板の表面欠陥（目視判
定）、室温引張り強さおよびアルマイト処理性（目視判
定）等を表１に示す。尚表１には、比較例として自動車
用Ａｌ合金ボンネット材屑のみを溶解原料として使用し
た以外は上記と全く同様に処理して得たＡｌ合金板の判
定結果を併記した。Table 1 shows the surface defects (visual judgment), the tensile strength at room temperature and the alumite processability (visual judgment) of the obtained Al alloy plate. In addition, Table 1 also shows, as a comparative example, the determination results of the Al alloy sheet obtained by the same treatment as above except that only the Al alloy bonnet material scraps for automobiles were used as the melting raw material.
【００２０】[0020]
【表１】 [Table 1]
【００２１】実施例２ 原料として自動車用Ａｌ合金製フレーム屑（ＪＩＳ６０
００系：塗料からのＰｂ混入量は１００ｐｐｍ）１５重
量部と、アルマイト処理された建築用アルミサッシ屑
（ＪＩＳ６０００系：Ｐｂ量は３０ｐｐｍ）８５重量部
を、低周波誘導炉（３ｔ）に装入し７５０℃×１５分で
大気溶解した。均一溶解後のＰｂ濃度は３５ｐｐｍであ
った。以下、実施例１と同様にして精錬、濾過、鋳造、
圧延を行なって厚さ５mmのＡｌ合金板を得、同様にして
品質評価を行なった。結果を、自動車用Ａｌ合金製フレ
ーム材屑を単独で溶解した場合（比較例）と共に表２に
示す。Example 2 As a raw material, aluminum alloy frame scraps for automobiles (JIS60
00: 15 parts by weight of Pb mixed from the paint (100 ppm) and 85 parts by weight of anodized aluminum sash for construction (JIS6000: 30 ppm of Pb) are charged into a low frequency induction furnace (3t). Then, it was dissolved in the atmosphere at 750 ° C. for 15 minutes. The Pb concentration after uniform dissolution was 35 ppm. Hereafter, refining, filtration, casting, in the same manner as in Example 1,
Rolling was performed to obtain an Al alloy plate having a thickness of 5 mm, and the quality was evaluated in the same manner. The results are shown in Table 2 together with the case where the aluminum alloy frame scrap for automobiles was melted alone (comparative example).
【００２２】[0022]
【表２】 [Table 2]
【００２３】[0023]
【発明の効果】本発明は以上の様に構成されており、自
動車用Ａｌ合金製品屑を原料とする溶湯に見られる塗料
由来のＰｂ濃度を、建築用Ａｌ合金製品屑によって希釈
することにより、ＪＩＳ６０００系Ａｌ合金としての成
分組成の要件を十分に満たす低Ｐｂ含有量のＡｌ合金に
再生することができ、大量のＡｌ合金屑を簡単な方法で
効率よく回収再利用し得ることになった。EFFECTS OF THE INVENTION The present invention is constituted as described above, and by diluting the Pb concentration derived from the coating material found in the molten metal using the aluminum alloy product scraps for automobiles as the raw material with the aluminum alloy product scraps for construction, It was possible to regenerate an Al alloy having a low Pb content that sufficiently satisfies the requirements for the composition of components as a JIS6000 series Al alloy, and it was possible to efficiently recover and reuse a large amount of Al alloy scraps by a simple method.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大賀 清正 兵庫県神戸市西区高塚台１丁目５番５号 株式会社神戸製鋼所神戸総合技術研究所内 (72)発明者 新井 基浩 兵庫県神戸市西区高塚台１丁目５番５号 株式会社神戸製鋼所神戸総合技術研究所内 (72)発明者 益田 穣司 山口県下関市長府港町14番１号 株式会社 神戸製鋼所長府製造所内 (72)発明者 北野 貴之 山口県下関市長府港町14番１号 株式会社 神戸製鋼所長府製造所内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Kiyomasa Oga 1-5-5 Takatsukadai, Nishi-ku, Kobe-shi, Hyogo Prefecture Kobe Steel Research Institute, Kobe Steel Co., Ltd. (72) Inventor Motohiro Arai Takatsuka, Nishi-ku, Kobe-shi, Hyogo Prefecture No. 1-5-5 Kobe Steel Works, Ltd., Kobe Research Institute (72) Inventor Minji Masuda 14-1, Chofu Minatomachi, Shimonoseki City, Yamaguchi Prefecture Kobe Steel Co., Ltd., Chofu Factory (72) Inventor Takayuki Kitano Yamaguchi 14-1 Chofu Minatomachi, Shimonoseki City, Shizuoka Prefecture Kobe Steel Co., Ltd. Chofu Works
Claims (1)
金製品屑を溶解原料の少なくとも一部として併用し、自
動車用Ａｌ合金製品屑中のＰｂ濃度を建築用Ａｌ合金製
品屑によって希釈することにより、Ｐｂ含有率の低いＡ
ｌ合金として再生することを特徴とするＡｌ合金屑の溶
解法。1. An Al alloy product scrap for construction and an Al alloy product scrap for automobiles are used together as at least a part of a melting raw material, and the Pb concentration in the scrap Al alloy product for automobiles is diluted with the Al alloy product scrap for construction. A has a low Pb content
A method for melting Al alloy scraps, characterized in that it is regenerated as an L alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP328094A JPH07207350A (en) | 1994-01-17 | 1994-01-17 | Melting method of al alloy scrap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP328094A JPH07207350A (en) | 1994-01-17 | 1994-01-17 | Melting method of al alloy scrap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07207350A true JPH07207350A (en) | 1995-08-08 |
Family
ID=11553015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP328094A Withdrawn JPH07207350A (en) | 1994-01-17 | 1994-01-17 | Melting method of al alloy scrap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07207350A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999053110A1 (en) * | 1998-04-08 | 1999-10-21 | The Furukawa Electric Co., Ltd. | Method of manufacturing aluminum alloy for flattening material and aluminum alloy flattening material for automobiles |
| JP2003277837A (en) * | 2002-03-22 | 2003-10-02 | Sumitomo Light Metal Ind Ltd | Method and plant for recycling wrought aluminum for car |
-
1994
- 1994-01-17 JP JP328094A patent/JPH07207350A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999053110A1 (en) * | 1998-04-08 | 1999-10-21 | The Furukawa Electric Co., Ltd. | Method of manufacturing aluminum alloy for flattening material and aluminum alloy flattening material for automobiles |
| US6355090B1 (en) | 1998-04-08 | 2002-03-12 | The Furukawa Electric Co., Ltd. | Method of manufacturing aluminum alloy for flattening material and aluminum alloy flattening material for automobiles |
| CN1099469C (en) * | 1998-04-08 | 2003-01-22 | 本田技研工业株式会社 | Method of manufacturing aluminum alloy for flattening material and aluminum alloy flattening material for automobiles |
| JP2003277837A (en) * | 2002-03-22 | 2003-10-02 | Sumitomo Light Metal Ind Ltd | Method and plant for recycling wrought aluminum for car |
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| A300 | Withdrawal of application because of no request for examination |
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