JPH0517306B2 - - Google Patents
Info
- Publication number
- JPH0517306B2 JPH0517306B2 JP1307766A JP30776689A JPH0517306B2 JP H0517306 B2 JPH0517306 B2 JP H0517306B2 JP 1307766 A JP1307766 A JP 1307766A JP 30776689 A JP30776689 A JP 30776689A JP H0517306 B2 JPH0517306 B2 JP H0517306B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- mold
- aluminum alloy
- layer
- aluminum
- 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
- 229910000838 Al alloy Inorganic materials 0.000 claims description 34
- 239000010410 layer Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 10
- 239000011247 coating layer Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 229910052727 yttrium Inorganic materials 0.000 claims description 6
- 238000005524 ceramic coating Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000005266 casting Methods 0.000 description 12
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 5
- 239000010953 base metal Substances 0.000 description 5
- 239000011777 magnesium Substances 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 229910000861 Mg alloy Inorganic materials 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 229910001297 Zn alloy Inorganic materials 0.000 description 3
- -1 aluminum gold Chemical compound 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007750 plasma spraying Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000007751 thermal spraying Methods 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910000946 Y alloy Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229940098458 powder spray Drugs 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Laminated Bodies (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Coating By Spraying Or Casting (AREA)
Description
【発明の詳細な説明】
［発明の利用分野］
本発明は、アルミニウム合金金型の内面に、合
金およびセラミツクを溶射することによつて、成
形の容易なアルミニウム合金より成る金型の耐摩
耗性および耐久性を改善した鋳造用アルミニウム
合金金型に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention improves the wear resistance of a mold made of an aluminum alloy that is easy to form by thermally spraying an alloy and ceramic onto the inner surface of the mold. and an aluminum alloy mold for casting with improved durability.
［従来の技術および発明が解決しようとする課
題］
アルミニウム合金は耐熱性および機械的強度が
低い為に、従来にはこの合金をベース・メタルと
する金型は実用されていない。しかしながらアル
ミニウム金は成が非常に容易であり、この性質を
金型に利用することができれば、金型の製造費用
を著しく低下させることができる。[Prior Art and Problems to be Solved by the Invention] Since aluminum alloys have low heat resistance and mechanical strength, molds using this alloy as a base metal have not been put into practical use. However, aluminum gold is very easy to produce, and if this property can be utilized in molds, the cost of manufacturing the molds can be significantly reduced.
アルミニウムは酸化被膜を形成する性質を有し
ていることは周知である。しかしこの被膜だけで
は金型として使用するには不十分な機械的強度し
か示していない。 It is well known that aluminum has the property of forming an oxide film. However, this coating alone exhibits insufficient mechanical strength to be used as a mold.
本発明は、アルミニウム合金をベースメタルと
し、低溶融金属（例えば、アルミニウムおよびア
ルミニウム合金、マグネシウムおよびマグネシウ
ム合金、亜鉛および亜鉛合金等）の鋳造に充分に
耐える金型を提供することを課題としている。 An object of the present invention is to provide a mold that uses an aluminum alloy as a base metal and can sufficiently withstand casting of low-melting metals (for example, aluminum and aluminum alloys, magnesium and magnesium alloys, zinc and zinc alloys, etc.).
［発明の構成］
本発明者は、CoおよびCrの少なくとも１種類、
NiおよびＹより成る粉末金属溶射材料が、アル
ミニウム合金で形成された金型の内面に溶射され
た被覆層およびそれより外側の層としてZrO2／
Y2O3-多孔質セラミツク被覆を持ち、上記粉末金
属溶射材料の各成分が以下の割合で存在し：
０〜40重量％のCo
０〜25重量％のCr
0.1〜1.0重量％のＹ
残量のNi
そして上記セラミツク層の組成が98〜85重量％
のZrO2および２〜15重量％のY2O3であることを
特徴とする、アルミニウム合金金型によつて、上
記の課題が解決されることを見出した。[Structure of the Invention] The present inventor has discovered that at least one of Co and Cr,
A powder metal spray material consisting of Ni and Y is sprayed on the inner surface of a mold made of aluminum alloy as a coating layer and an outer layer of ZrO 2 /
Y 2 O 3 - having a porous ceramic coating, each component of the powder metal spray material described above is present in the following proportions: 0-40 wt.% Co 0-25 wt.% Cr 0.1-1.0 wt.% Y balance The amount of Ni and the composition of the above ceramic layer is 98-85% by weight
It has been found that the above problems are solved by an aluminum alloy mold characterized by ZrO 2 of 2 to 15% by weight of Y 2 O 3 .
更に本発明者は、５〜45重量％のCr、0.1〜1.0
重量％のＹおよび残量のCoより成る粉末金属溶
射材料が、アルミニウム金で形成された金型の内
面に溶射された被覆層およびそれより外側の層と
してZrO2／Y2O3-多孔質セラミツク被覆を持ち
そして上記セラミツク層の組成が98〜85重量％の
ZrO2および２〜15重量％のY2O3であることを特
徴とする、アルミニウム合金金型によつても同様
に上記の課題が解決できることを見出した。 Furthermore, the present inventor has found that 5 to 45% by weight of Cr, 0.1 to 1.0
A powder metal spray material consisting of Y in weight percent and Co in the balance was sprayed on the inner surface of a mold made of aluminum gold as a coating layer and as an outer layer ZrO 2 /Y 2 O 3 - porous. having a ceramic coating and the composition of the ceramic layer being 98 to 85% by weight.
It has been found that the above problems can be similarly solved by an aluminum alloy mold characterized by ZrO 2 and 2-15% by weight of Y 2 O 3 .
本発明のアルミニウム合金金型は、アルミニウ
ム、アルミニウム合金、マグネシウム、マグネシ
ウム合金、亜鉛、亜鉛合金等の低溶融金属を鋳造
するのに用いることができる。これは、鋳造時
に、アルミニウム合金金型が鋳造材料のマグネシ
ウムまたはマグネシウム合金あるいはアルミニウ
ムまたはアルミニウム合金の融体と接触した場合
に、成形体におよび／または成形体中のアルミニ
ウムまたはマグネシウム自体が金型のアルミニウ
ム合金に付着してしまうことが予想されたので、
全く驚くべきことである。 The aluminum alloy mold of the present invention can be used to cast low-melting metals such as aluminum, aluminum alloys, magnesium, magnesium alloys, zinc, zinc alloys, and the like. This means that when an aluminum alloy mold comes into contact with the casting material magnesium or magnesium alloy or a melt of aluminum or aluminum alloy during casting, the aluminum or magnesium itself in the molded body and/or in the molded body It was expected that it would adhere to aluminum alloy, so
That's completely surprising.
本発明に使用される溶射材料およびその製造方
法は、特願平１−139228号および同１−228343号
に既に開示した。即ち、本発明の溶射材料を製造
するには、これを構成する各成分を最初に溶解混
合する際にＹが酸化し易いことから、これを防止
する為に真空状態で行う必要がある。次いで溶融
物を直接的にガス−アトマイザーによつて10μｍ
〜80μｍの微細粉末とする。 The thermal spray material used in the present invention and its manufacturing method have already been disclosed in Japanese Patent Application Nos. 1-139228 and 1-228343. That is, in order to manufacture the thermal spray material of the present invention, since Y is likely to be oxidized when the constituent components are first melted and mixed, it is necessary to perform the process in a vacuum to prevent this. The melt is then directly atomized to 10 μm using a gas atomizer.
Make a fine powder of ~80 μm.
このように製造された粉末溶射材料は、アルミ
ニウム合金の金型に慣用の方法、例えばプラズマ
溶射、高温溶射法によつて溶射することができ
る。 The powder spray material thus produced can be sprayed onto an aluminum alloy mold by a conventional method, such as plasma spraying or high temperature spraying.
本発明の金属溶射材料を用いて溶射した後に得
られる被覆層は、1300℃まで耐えられる優れた耐
熱性を有する。更に本発明で用いる金属溶射材料
層はベースメタルおよびセラミツク層との密着性
が非常に良い。 The coating layer obtained after thermal spraying using the metal thermal spraying material of the present invention has excellent heat resistance that can withstand up to 1300°C. Furthermore, the metal spray material layer used in the present invention has very good adhesion to the base metal and ceramic layer.
セラミツク層は、約２〜15重量％のイツトリア
と残量のジルコニヤで組成されており、多孔質で
あることを起因して鋳造時にガスを排除する働き
をする他に、鋳型の耐熱性および耐久性を著しく
向上させる働きもする。イツトリアの量が上記の
範囲より少なくとも多くともセラミツク層の強度
並びに合金層との密着性が悪くなる。この層の厚
さは一般に50〜500μｍであるのが好ましい。 The ceramic layer is composed of approximately 2 to 15% by weight of ittria and the remaining amount of zirconia, and due to its porous nature, it not only functions to eliminate gas during casting, but also improves the heat resistance and durability of the mold. It also works to significantly improve sex. If the amount of yttoria is at least greater than the above range, the strength of the ceramic layer and the adhesion with the alloy layer will deteriorate. The thickness of this layer is generally preferably between 50 and 500 μm.
これらの層を設けたアルミニウム合金金型は、
アルミニウム、アルミニウム合金、マグネシウ
ム、マグネシウム合金、亜鉛および亜鉛合金の成
形体を得る場合に、5000シヨツト以上の鋳造にも
耐え得る耐久性を示す。 The aluminum alloy mold with these layers is
When obtaining formed bodies of aluminum, aluminum alloy, magnesium, magnesium alloy, zinc, and zinc alloy, it exhibits durability that can withstand more than 5,000 casting shots.
本発明のアルミニウム合金金型の例を以下に示
す：
最初にアルミニウム合金より成る金型の内面
に、上述の合金組成の溶射材料を約10000〜約
5000℃でプラズマ溶射または約2700℃で高温溶射
によつて50〜600μｍ、殊に200〜300μｍの厚さで
被覆する。次いで組成が98〜85重量％、殊に95〜
90重量％のZrO2と２〜15重量％、殊に５〜10重
量％のY2O3であるセラミツク被覆層を同様な条
件の溶射法によつて50〜500μｍ、殊に200〜300μ
ｍの厚さに溶射する。セラミツク層には沢山の連
続孔が生じ、これがセラミツク層を多孔質にして
いる。この多孔質の孔は成形体の表面に凹凸を生
じさせる程のものである。 An example of an aluminum alloy mold according to the present invention is shown below: First, the inner surface of a mold made of an aluminum alloy is sprayed with a thermal spray material having the above-mentioned alloy composition in an amount of about 10,000 to about
The coating is applied by plasma spraying at 5000 DEG C. or hot spraying at about 2700 DEG C. to a thickness of 50 to 600 .mu.m, in particular 200 to 300 .mu.m. Next, the composition is 98 to 85% by weight, especially 95 to 85% by weight.
A ceramic coating layer of 90% by weight of ZrO 2 and 2-15% by weight, in particular 5-10% by weight of Y 2 O 3 is coated with a thickness of 50-500 μm, especially 200-300 μm by thermal spraying under similar conditions.
Spray to a thickness of m. Many continuous pores are formed in the ceramic layer, which makes it porous. The pores are so large as to cause irregularities on the surface of the molded article.
本発明のアルミニウム合金金型の場合には、セ
ラミツク溶射材料とベース・メタルとの間に著し
い膨張係数の違いがあるにもかかわらず、結合層
（金属溶射材料）が両者を非常に良好に接合して
いる。 In the case of the aluminum alloy mold of the present invention, the bonding layer (metal spray material) bonds the ceramic spray material and the base metal very well, despite the significant difference in coefficient of expansion between the two. are doing.
本発明のアルミニウム合金金型は、軟塗型剤を
鋳型内面に塗布する必要なしに、5000シヨツト以
上の鋳造にも耐え得る。 The aluminum alloy mold of the present invention can withstand more than 5,000 casting shots without the need to apply a soft coating agent to the inner surface of the mold.
［実施例］
本発明を実施例および比較例によつて以下に更
に詳細に説明する。[Examples] The present invention will be explained in more detail below using Examples and Comparative Examples.
実施例 １
アルミニウム合金で形成されたアルミニウム合
金製エンジンカバー用金型の内面に、プラズマ溶
射法によつて44.55重量％のNi、35重量％Co、20
重量％のCrおよび45重量％のＹより成る溶融粉
末合金を8000℃で溶射して150μｍの被覆層を形
成する。Example 1 The inner surface of an aluminum alloy engine cover mold made of aluminum alloy was coated with 44.55% by weight Ni, 35% by weight Co, and 20% by weight by plasma spraying.
A molten powder alloy consisting of % by weight Cr and 45% by weight Y is sprayed at 8000° C. to form a 150 μm coating layer.
このようにして形成されたNi／Co／Cr／Ｙ合
金被覆層の上に、同様な溶射法によつて92重量％
のジルコニヤと８重量％イツトリアとより成るセ
ラミツク粉末を250μｍの厚さで被覆する。その
際の溶射温度は8000℃である。セラミツク層には
非常に小さい沢山の孔が存在し、多孔質と成つて
いる。 On the thus formed Ni/Co/Cr/Y alloy coating layer, 92% by weight
Ceramic powder consisting of zirconia and 8% by weight itria is coated with a thickness of 250 μm. The spraying temperature at that time was 8000℃. Ceramic layers have many very small pores, making them porous.
この様にして製造されたアルミニウム合金金型
を、自動車のアルミニウム製エンジンカバーの鋳
造に用いたところ、5000シヨツト行つても、金型
に変化がなく、成形体の表面状態も良好であつ
た。 When the aluminum alloy mold thus produced was used to cast an aluminum engine cover for an automobile, there was no change in the mold even after 5000 shots, and the surface condition of the molded product was good.
実施例 ２
溶射される合金層が50重量％のNi、31重量％
のCo、18.55重量％のCrおよび0.45重量％のＹよ
り成りそしてセラミツク層が96重量％のジルコニ
ヤ粉末と４重量％のイツトリアとより成る点だけ
を変更して、実施例１と同様にアルミニウム合金
金型を製造した。この金型で自動車のアルミニウ
ム合金製エンジンカバーを鋳造する鋳造実験を実
施例１と同様に行つたところ、5000シヨツト行つ
ても、金型に変化がなく、成形体の表面状態も良
好であつた。Example 2 The alloy layer to be sprayed is 50% by weight Ni, 31% by weight
An aluminum alloy was prepared in the same manner as in Example 1, except that the ceramic layer consisted of 96% by weight of zirconia powder and 4% by weight of ittria. Manufactured the mold. A casting experiment was conducted to cast an aluminum alloy engine cover for an automobile using this mold in the same manner as in Example 1. Even after 5,000 shots, there was no change in the mold and the surface condition of the molded product was good. .
実施例 ３
溶射される合金層が57.55重量％のNi、25重量
％のCo、17重量％のCrおよび0.45重量％のＹよ
り成る点だけ変更して、実施例１と同様にアルミ
ニウム合金金型を製造しそして同様の鋳造実験を
行つた。Example 3 An aluminum alloy mold was prepared in the same manner as in Example 1, except that the alloy layer to be thermally sprayed consisted of 57.55% by weight Ni, 25% by weight Co, 17% by weight Cr, and 0.45% by weight Y. was manufactured and similar casting experiments were conducted.
実施例１におけるのと同等の結果が得られた。 Results equivalent to those in Example 1 were obtained.
実施例 ４
79.55重量％のNi、20重量％のCrおよび0.45重
量％のＹより成る金属溶射材料を用いた点だけを
変更して実施例１と同様にアルミニウム合金金型
を製造しそして同様の鋳造実験を行つた。Example 4 An aluminum alloy mold was manufactured in the same manner as in Example 1 with the only difference that a metal sprayed material consisting of 79.55% Ni, 20% Cr and 0.45% Y was used, and a similar mold was used. Conducted casting experiments.
実施例１におけるのと同等の結果が得られた。 Results equivalent to those in Example 1 were obtained.
実施例 ５
66.45重量％のNi、33重量％のCoおよび0.55重
量％のＹより成る金属溶射材料を用いた点だけを
変更して実施例１と同様にアルミニウム合金金型
を製造しそして同様の鋳造実験を行つた。Example 5 An aluminum alloy mold was manufactured as in Example 1 with the only difference that a metal sprayed material consisting of 66.45% Ni, 33% Co and 0.55% Y was used, and a similar mold was used. Conducted casting experiments.
実施例１におけるのと同等の結果が得られた。 Results equivalent to those in Example 1 were obtained.
実施例 ６
79.55重量％のCo、20重量％のCrおよび0.45重
量％のＹより成る金属溶射材料を用いた点だけを
変更して実施例１と同様にアルミニウム合金金型
を製造しそして同様の鋳造実験を行つた。Example 6 An aluminum alloy mold was manufactured as in Example 1 with the only difference that a metal sprayed material consisting of 79.55% by weight Co, 20% by weight Cr and 0.45% by weight Y was used and a similar mold was used. Conducted casting experiments.
実施例１におけるのと同等の結果が得られた。 Results equivalent to those in Example 1 were obtained.
［発明の効果］
本発明のアルミニウム合金金型は、従来、金型
の分野で実用されていなかつたアルミニウム合金
をベース・メタルとするものであり、かゝる金型
が鋼鉄製金型と同様に使用できるようになつたこ
とは、驚くべきことであり且つ産業への貢献は顕
著なものである。[Effects of the Invention] The aluminum alloy mold of the present invention uses an aluminum alloy, which has not been put into practical use in the field of molds, as a base metal, and the mold is similar to steel molds. It is surprising that it has become possible to use it, and its contribution to industry is remarkable.
Claims (1)
Ｙより成る粉末金属溶射材料が、アルミニウム合
金で形成された金型の内面に溶射された被覆層お
よびそれより外側の層としてZrO2／Y2O3-多孔
質セラミツク被覆を持ち、上記粉末金属溶射材料
の各成分が以下の割合で存在し： ０〜40重量％のCo ０〜25重量％のCr 0.1〜1.0重量％のＹ 残量のNi そして上記セラミツク層の組成が98〜85重量％
のZrO2および２〜15重量％のY2O3であることを
特徴とする、アルミニウム合金金型。 ２ ５〜45重量％のCr、0.1〜1.0重量％のＹおよ
び残量のCoより成る粉末金属溶射材料が、アル
ミニウム合金で形成された金型の内面に溶射され
た被覆層およびそれより外側の層としてZrO2／
Y2O3-多孔質セラミツク被覆を持ちそして上記セ
ラミツク層の組成が98〜85重量％のZrO2および
２〜15重量％のY2O3であることを特徴とする、
アルミニウム合金金型。[Claims] 1. A powder metal sprayed material consisting of at least one of Co and Cr, Ni and Y is sprayed on the inner surface of a mold made of an aluminum alloy, and as a coating layer and an outer layer of ZrO. 2 /Y 2 O 3 - having a porous ceramic coating, each component of the powder metal spray material described above is present in the following proportions: 0-40% by weight Co 0-25% by weight Cr 0.1-1.0% by weight Y The remaining amount of Ni and the composition of the ceramic layer is 98 to 85% by weight.
of ZrO 2 and 2-15% by weight of Y 2 O 3 . 2 A powder metal spraying material consisting of 5 to 45% by weight of Cr, 0.1 to 1.0% by weight of Y, and the remaining amount of Co is applied to a coating layer that is sprayed on the inner surface of a mold made of aluminum alloy and to the outer surface of the mold. ZrO 2 / as layer
Y 2 O 3 - having a porous ceramic coating and characterized in that the composition of said ceramic layer is 98-85% by weight ZrO 2 and 2-15% by weight Y 2 O 3 ,
Aluminum alloy mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1307766A JPH03170656A (en) | 1989-11-29 | 1989-11-29 | Metal mold made of aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1307766A JPH03170656A (en) | 1989-11-29 | 1989-11-29 | Metal mold made of aluminum alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03170656A JPH03170656A (en) | 1991-07-24 |
| JPH0517306B2 true JPH0517306B2 (en) | 1993-03-08 |
Family
ID=17973014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1307766A Granted JPH03170656A (en) | 1989-11-29 | 1989-11-29 | Metal mold made of aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03170656A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2160857C (en) | 1994-10-20 | 2001-12-25 | Takashi Nishi | Porous metal body and process for producing same |
| CN102825135A (en) * | 2011-06-16 | 2012-12-19 | 昆山市瑞捷精密模具有限公司 | Ferrite stainless steel stamping die with self-lubricating coating |
| CN102327962A (en) * | 2011-06-16 | 2012-01-25 | 昆山市瑞捷精密模具有限公司 | Method for manufacturing zinc alloy mould with hard mask structure |
-
1989
- 1989-11-29 JP JP1307766A patent/JPH03170656A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03170656A (en) | 1991-07-24 |
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