JPH108160A - Production of calcium-containing magnesium alloy - Google Patents
Production of calcium-containing magnesium alloyInfo
- Publication number
- JPH108160A JPH108160A JP15778796A JP15778796A JPH108160A JP H108160 A JPH108160 A JP H108160A JP 15778796 A JP15778796 A JP 15778796A JP 15778796 A JP15778796 A JP 15778796A JP H108160 A JPH108160 A JP H108160A
- Authority
- JP
- Japan
- Prior art keywords
- calcium
- aluminum foil
- magnesium
- molten
- added
- 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
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- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、マグネシウム合金
の製造方法に関し、より詳しくは、例えば自動車・二輪
車用及び汎用エンジン部品等の耐熱用途向けのカルシウ
ム含有マグネシウム合金の製造方法に関する。The present invention relates to a method for producing a magnesium alloy, and more particularly, to a method for producing a calcium-containing magnesium alloy for heat-resistant applications such as for automobiles and motorcycles and general-purpose engine parts.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】近年、
自動車等での一層のマグネシウム物品の拡大のためエン
ジン物品に使用できる４７３Ｋ程度までの高温でも十分
な強度を有するマグネシウム合金（以下「マグネ合金」
という。）として、金属カルシウムを含有した合金が提
案されている（特開平６−２００３４８号公報参照）。2. Description of the Related Art In recent years,
Magnesium alloy that has sufficient strength even at high temperatures up to about 473K, which can be used for engine products to further expand magnesium products in automobiles and the like (hereinafter "magne alloy")
That. ), An alloy containing metallic calcium has been proposed (see JP-A-6-200348).
【０００３】しかしながら、従来のカルシウム含有マグ
ネシウム合金の製造においては、カルシウムの添加が不
安定で、一般に歩留りが悪いという問題がある。However, in the production of a conventional calcium-containing magnesium alloy, there is a problem that the addition of calcium is unstable and the yield is generally low.
【０００４】この結果、カルシウム含有合金を製造する
際に、製造費用が増大し、また品質が不安定であり、汎
用品として使用され得ないという問題がある。As a result, when manufacturing a calcium-containing alloy, there is a problem that the manufacturing cost increases, the quality is unstable, and the alloy cannot be used as a general-purpose product.
【０００５】本発明はこのような問題に鑑み、耐熱性に
優れたカルシウム含有マグネシウム合金を安価で且つ品
質安定性に優れたカルシウム含有マグネシウム合金の製
造方法を提供することを課題とする。[0005] In view of the above problems, an object of the present invention is to provide a method for producing a calcium-containing magnesium alloy which is inexpensive and has excellent quality stability and which has excellent heat resistance.
【０００６】[0006]
【課題を解決するための手段】本発明者等は上記課題を
解決するために種々検討を重ねた結果、金属カルシウム
のマグネシウム溶湯への添加に際し、これをアルミニウ
ム箔で包み、治具にてマグネシウム溶融中に浸漬するこ
とで、歩留りよく溶解させることができることを見出
し、本発明を完成した。The present inventors have made various studies to solve the above-mentioned problems. As a result, when adding metallic calcium to molten magnesium, wrap the aluminum metal foil with aluminum foil and use a jig to fix the magnesium. It has been found that immersion during melting can be dissolved with good yield, and the present invention has been completed.
【０００７】係る知見に基づく本発明のカルシウム含有
マグネシウム合金の製造方法は、カルシウム含有マグネ
シウム合金の製造方法において、金属カルシウムをアル
ミニウム箔に包み治具にてマグネシウム溶湯中に浸漬
し、金属溶湯中に溶解・添加させることを特徴とするも
のである。[0007] The method for producing a calcium-containing magnesium alloy of the present invention based on such knowledge is the same as the method for producing a calcium-containing magnesium alloy, except that metal calcium is wrapped in aluminum foil and immersed in molten magnesium with a jig. It is characterized by being dissolved and added.
【０００８】上記カルシウム含有マグネシウム合金の製
造方法において、金属カルシウムをマグネシウム溶湯中
に溶解・添加した後、金属カルシウム以外の合金元素を
添加させることを特徴とするものである。In the above method for producing a calcium-containing magnesium alloy, the method is characterized in that calcium metal is dissolved and added in a molten magnesium, and then alloying elements other than calcium metal are added.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態説明す
る。Embodiments of the present invention will be described below.
【００１０】本発明のカルシウム含有マグネシウム合金
は、金属カルシウムをアルミニウム箔に包み治具にてマ
グネシウム溶湯中に浸漬し、金属溶湯中に歩留りよく溶
解・添加させることにより、歩留りよくカルシウム含有
マグネシウム合金を製造するものである。[0010] The calcium-containing magnesium alloy of the present invention is obtained by wrapping calcium metal in aluminum foil, immersing it in a molten magnesium with a jig, and dissolving and adding it in the molten metal with a good yield. It is manufactured.
【００１１】ここで、本発明ではマグネシウム溶湯中に
金属カルシウムを溶解させるためには、該金属カルシウ
ムをアルミニウム箔で包み、これを治具でマグネシウム
溶湯中に浸漬させ、溶解させるようにしている。これ
は、金属カルシウムは比重（ｄ 20）＝１．５５であり、
マグネシウム（ｄ20＝１．７４１）より軽量で且つ活性
があり、直接マグネシウム溶湯に添加した場合には、表
面に浮遊して酸化してしまい、歩留りが悪くなると共
に、溶解効率が低下してしまうという問題を解消するた
めである。Here, in the present invention, the molten magnesium
In order to dissolve the calcium metal, the metal calcium
And wrap it in aluminum foil,
It is immersed in the molten metal to be dissolved. this
Means that calcium metal has a specific gravity (d 20) = 1.55,
Magnesium (d20= 1.741) Lighter and more active
When added directly to the molten magnesium,
Floats on the surface and oxidizes, lowering the yield
In addition, to solve the problem that the dissolution efficiency is reduced
It is.
【００１２】よって、本発明のように、金属カルシウム
をアルミニウム箔に包むことにより酸化を防止しつつ加
熱することを可能とし、これを治具にてマグネシウム溶
湯中に浸漬することで、アルミニウム箔が破れたところ
で素早く酸化しないで溶解・添加することができる。Therefore, as in the present invention, by wrapping metallic calcium in aluminum foil, it is possible to heat while preventing oxidation, and by immersing this in a molten magnesium with a jig, the aluminum foil can be heated. It can be dissolved and added without oxidizing quickly when it is broken.
【００１３】ここで、アルミニウム箔を用いることで微
量のアルミニウムの混入が懸念されるが、カルシウム含
有合金の多くはマグネシウム−アルミニウム系合金であ
ると共に、該アルミニウム箔の量はせいぜい１〜２ｇ以
下であり、工業的にはその影響は無視できる程度のもの
である。[0013] Here, there is a concern that a small amount of aluminum may be mixed by using an aluminum foil. However, most of calcium-containing alloys are magnesium-aluminum alloys, and the amount of the aluminum foil is at most 1 to 2 g or less. Yes, industrially, the effect is negligible.
【００１４】また、かかるカルシウム含有マグネシウム
合金に他のアルミニウム，亜鉛，マンガン，ケイ素等の
他の金属を含有させる場合には、先ずカルシウムの添加
を優先させることが望ましい。これは、金属カルシウム
は活性であるために多くの元素と化合物を生成しやす
く、例えばアルミニウムとは優先的に化合物を生成し比
重差から溶湯下部に沈澱し易くなり、好ましくないから
である。また、ケイ素とも優先的に粗大な化合物を生成
し、この場合には溶湯表面に浮上し易くなり、好ましく
ないからである。When the calcium-containing magnesium alloy contains other metals such as aluminum, zinc, manganese and silicon, it is desirable to give priority to the addition of calcium first. This is because calcium metal is active and thus easily forms compounds with many elements, for example, aluminum and compounds are formed preferentially and are easily precipitated under the molten metal due to a difference in specific gravity, which is not preferable. Also, a coarse compound is preferentially generated with silicon, and in this case, the compound easily floats on the surface of the molten metal, which is not preferable.
【００１５】これらの要因が重なって、本発明のカルシ
ウム含有マグネシウム合金の品質が不安定になるが、マ
グネシウム溶湯に直接金属カルシウムを添加した場合に
は、分散すると共に、他の元素を添加した場合よりもマ
グネシウムシリサイドから他の元素とのシリサイドに置
換する場合も微細になり、上述した諸問題を軽減するこ
ととなる。[0015] These factors overlap to destabilize the quality of the calcium-containing magnesium alloy of the present invention. However, when metallic calcium is directly added to the molten magnesium, it is dispersed and when other elements are added. Also, the case where magnesium silicide is replaced with silicide with another element becomes finer, and the above-described problems are reduced.
【００１６】また、本発明において、他の添加する金属
としては、上記金属の他に、ランタノイド系金属（例え
ばネオジム、ランタン、セリウム、ミッシュメタル等）
を添加することにより、耐熱用途向けのカルシウム含有
マグネシウム合金を得ることができる。この場合の添加
においても、先ずカルシウムの添加をアルミニウム箔で
包んで先に添加・溶解させることを優先させることが望
ましい。In the present invention, other metals to be added include lanthanoid metals (eg, neodymium, lanthanum, cerium, misch metal, etc.) in addition to the above metals.
By adding, a calcium-containing magnesium alloy for heat-resistant applications can be obtained. Also in this case, it is desirable to prioritize that the addition of calcium is first wrapped in aluminum foil and then added and dissolved first.
【００１７】[0017]
【実施例】以下、本発明の好適な実施例を説明するが、
本発明はこれに限定されものではない。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below.
The present invention is not limited to this.
【００１８】５５ｋＷ低周波誘導加熱装置で鉄鍋に５０
ｋｇの純マグネシウム溶湯を７２０℃で保持した。これ
にマグネシウム（Ｍｇ）−３重量％アルミニウム（Ａ
ｌ）−３重量％カルシウム（Ｃａ）−0.２重量％マンガ
ン（Ｍｎ）合金の製造を以下の条件で実施し、得られた
合金を分析した。なお、実施例２及び比較例２では、１
重量％ケイ素（Ｓｉ）を加えて合金を製造した。但し、
想定歩留りは１００％とした。In a 55 kW low frequency induction heating device, 50
kg of pure magnesium melt was kept at 720 ° C. In addition to this, magnesium (Mg) -3% by weight aluminum (A
l) -3% by weight of calcium (Ca) -0.2% by weight of manganese (Mn) alloy was manufactured under the following conditions, and the obtained alloy was analyzed. In Example 2 and Comparative Example 2, 1
An alloy was produced by adding weight percent silicon (Si). However,
The assumed yield was 100%.
【００１９】実施例１ 金属カルシウムをアルミニウム箔で包み、次いでこれを
マグネシウム溶湯中に浸漬し、その後アルミニウム及び
マンガン母材用合金を添加した。 実施例２ 金属カルシウムをアルミニウム箔で包み、次いでこれを
マグネシウム溶湯中に浸漬し、その後アルミニウム，ケ
イ素及びマンガン母材用合金を添加した。 比較例１ 先ず、金属カルシウムを直接マグネシウム溶湯中に添加
し、その後アルミニウム及びマンガン母材用合金を添加
した。 比較例２ アルミニウム及びケイ素をマンガン母材用合金に添加
し、その後金属カルシウムをアルミニウム箔で包みマグ
ネシウム溶湯中に浸漬した。上記得られた合金の各々の
組成を分析した結果を、下記「表１」に示す。Example 1 Metal calcium was wrapped in an aluminum foil, which was then immersed in a molten magnesium, and then aluminum and an alloy for a manganese base material were added. Example 2 Metallic calcium was wrapped in aluminum foil, which was then immersed in a molten magnesium, and then aluminum, silicon and an alloy for a manganese base material were added. Comparative Example 1 First, metallic calcium was directly added to a molten magnesium, and then aluminum and an alloy for a manganese base material were added. Comparative Example 2 Aluminum and silicon were added to an alloy for a manganese base material, and thereafter, calcium metal was wrapped in aluminum foil and immersed in molten magnesium. The results of analyzing the composition of each of the obtained alloys are shown in Table 1 below.
【００２０】[0020]
【表１】 [Table 1]
【００２１】「表１」に示すように、本発明にかかるカ
ルシウムをアルミニウム箔で包んでマグネシウム溶湯中
に浸漬・溶解させたものは、比較例及びと較べて、
歩留りが良いものとなっていた。As shown in Table 1, the calcium according to the present invention wrapped in aluminum foil and immersed and dissolved in a molten magnesium, compared with the comparative example and the comparative example,
The yield was good.
【００２２】[0022]
【発明の効果】以上、実施例とともに詳細に説明したよ
うに、本発明によれば、カルシウム含有マグネシウム合
金の製造に際し、カルシウムをアルミニウム箔で包んで
マグネシウム溶湯中に浸漬・溶解させているので、歩留
りよく合金を安定して製造することが可能となる。よっ
て、耐熱性の良好な自動車エンジン部品等の軽量化に有
効な合金を本発明により得らることができ、部品の品質
安定性，製造コストの低廉化及び添加歩留りにおいて優
れたものとなる。As described above in detail with the embodiments, according to the present invention, when manufacturing a calcium-containing magnesium alloy, calcium is wrapped in aluminum foil and immersed and dissolved in a molten magnesium. An alloy can be stably manufactured with a high yield. Therefore, the present invention can provide an alloy having good heat resistance and effective in reducing the weight of automobile engine parts and the like, and is excellent in quality stability of parts, reduction in manufacturing cost and addition yield.
Claims (2)
方法において、金属カルシウムをアルミニウム箔に包み
治具にてマグネシウム溶湯中に浸漬し、金属溶湯中に溶
解・添加させることを特徴とするカルシウム含有マグネ
シウム合金の製造方法。1. A method for producing a calcium-containing magnesium alloy, comprising the steps of: wrapping metal calcium in an aluminum foil, immersing the metal calcium in a magnesium melt with a jig, and dissolving and adding the calcium metal into the metal melt. Production method.
ウム合金の製造方法において、金属カルシウムをマグネ
シウム溶湯中に溶解・添加した後、金属カルシウム以外
の合金元素を添加させることを特徴とするカルシウム含
有マグネシウム合金の製造方法。2. The method for producing a calcium-containing magnesium alloy according to claim 1, wherein the calcium-containing magnesium alloy is dissolved and added to the molten magnesium, and then an alloying element other than the metal calcium is added. Manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15778796A JP3945721B2 (en) | 1996-06-19 | 1996-06-19 | Method for producing calcium-containing magnesium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15778796A JP3945721B2 (en) | 1996-06-19 | 1996-06-19 | Method for producing calcium-containing magnesium alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH108160A true JPH108160A (en) | 1998-01-13 |
| JP3945721B2 JP3945721B2 (en) | 2007-07-18 |
Family
ID=15657290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15778796A Expired - Lifetime JP3945721B2 (en) | 1996-06-19 | 1996-06-19 | Method for producing calcium-containing magnesium alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3945721B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014001428A (en) * | 2012-06-19 | 2014-01-09 | Kurimoto Ltd | Thermostable magnesium alloy |
| US10808301B2 (en) | 2015-05-27 | 2020-10-20 | Honda Motor Co., Ltd. | Magnesium alloy and method of manufacturing same |
-
1996
- 1996-06-19 JP JP15778796A patent/JP3945721B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014001428A (en) * | 2012-06-19 | 2014-01-09 | Kurimoto Ltd | Thermostable magnesium alloy |
| US10808301B2 (en) | 2015-05-27 | 2020-10-20 | Honda Motor Co., Ltd. | Magnesium alloy and method of manufacturing same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3945721B2 (en) | 2007-07-18 |
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