JPH02155532A - Permanent metallic mold made of cu alloy for casting - Google Patents
Permanent metallic mold made of cu alloy for castingInfo
- Publication number
- JPH02155532A JPH02155532A JP30682488A JP30682488A JPH02155532A JP H02155532 A JPH02155532 A JP H02155532A JP 30682488 A JP30682488 A JP 30682488A JP 30682488 A JP30682488 A JP 30682488A JP H02155532 A JPH02155532 A JP H02155532A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- layer
- mold
- casting
- coating
- 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
- 238000005266 casting Methods 0.000 title claims abstract description 22
- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 238000007747 plating Methods 0.000 claims abstract description 10
- 229910000599 Cr alloy Inorganic materials 0.000 claims abstract description 8
- 229910001182 Mo alloy Inorganic materials 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 10
- 238000005524 ceramic coating Methods 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 16
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052759 nickel Inorganic materials 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 2
- 229910052593 corundum Inorganic materials 0.000 abstract 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 23
- 239000011247 coating layer Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 5
- 238000007751 thermal spraying Methods 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［発明の技術分野１
本発明は、熱伝導性が良好であるゆえに温度制御が容易
である鋳造用銅合金製金型において、問題のあった耐摩
耗性および耐久性を改善した鋳造用銅合金製金型に関す
る。Detailed Description of the Invention [Technical Field of the Invention 1] The present invention solves problems in wear resistance and durability in copper alloy molds for casting, which have good thermal conductivity and therefore are easy to control temperature. This invention relates to a copper alloy mold for casting which has been improved.
１従来技術および発明が解決しようとする課８］特公昭
６１−５８１９号公報から、鋳型内面にＮｉメッキ層を
形成しそしてその上にＣｏ： ４５〜６５重量％、Ｍｏ
： ２０〜４０重量％および残部Ｃｒから成るＣ。1 Prior Art and Problems to be Solved by the Invention 8] From Japanese Patent Publication No. 61-5819, a Ni plating layer is formed on the inner surface of the mold, and Co: 45 to 65% by weight, Mo
: C consisting of 20-40% by weight and balance Cr.
−Ｍｏ−Ｃｒ合金層を溶射した連続鋳造鋳型が公知であ
る。この連続鋳造用鋳型を通例の鋳造、例えば低圧鋳造
、重力鋳造等の為の鋳型として用いた場合には、鋳造時
にガスを排除することが充分にはできない為に、“ふか
れ”（凹凸）が生し成形体の表面状態がわるいおという
欠点がある。Continuous casting molds with thermally sprayed -Mo-Cr alloy layers are known. When this continuous casting mold is used as a mold for conventional casting, such as low-pressure casting or gravity casting, it is difficult to remove gas sufficiently during casting, resulting in "blowing" (unevenness). The disadvantage is that the surface condition of the molded product is poor.
特開昭５９−１５９２４３号公報には、ジルコニウムお
よびチタンを含有し且つそれらの少なくとも１種類と銅
との化合物より成る析出相が存在する組織を有する銅合
金から成る鋳造金型が開示されている。この金型の場合
にも、鋳造時にガスを排除することができず、同様に成
形体の表面状態が悪いという欠点を有している。JP-A-59-159243 discloses a casting mold made of a copper alloy containing zirconium and titanium and having a structure in which a precipitated phase consisting of a compound of at least one of these and copper exists. . This mold also has the disadvantage that gas cannot be removed during casting, and the surface condition of the molded product is also poor.
更にこれらの従来技術の型の共通の欠点として、セラミ
ック粉末を含む水ガラス等でできた軟塗型剤でたびたび
塗型をする必要があることが挙げられる。その為に、そ
の作業上の時間的および経済的費用が甚大であり、この
点にも間題がある。A further common drawback of these prior art molds is the need for frequent mold coating with a softener made of water glass or the like containing ceramic powder. Therefore, the time and economic costs involved in the work are enormous, and there are also problems in this respect.
本発明は、か＼る従来技術の欠点を有さす、塗型をせず
に非常に長い寿命を有し且つ得られる成形体の表面状態
を常に良好にする鋳造用銅合金パーマネント鋳型を提供
することを課題としている。The present invention provides a copper alloy permanent mold for casting, which has a very long service life without the need for coating, and which always provides a good surface condition of the resulting molded product, which has the disadvantages of the prior art. This is the issue.
［発明の構成１
本発明者は、調合金製の鋳型の内面にニッケルメ・ンキ
層を設け、その上に中間層として特定の組成比のＣｏ／
Ｍｏ／Ｃｒ−合金被覆および外側層として特定の組成比
の” Ｊｚ／ＺｒＯ□−多孔質被覆を設けた場合に、か
＼る課題が解決できることを見出した。[Structure 1 of the Invention The present inventor provided a nickel coating layer on the inner surface of a mold made of prepared alloy, and coated with a Co/N coating layer with a specific composition ratio as an intermediate layer on top of the nickel coating layer.
It has been found that such problems can be solved when a Mo/Cr alloy coating and a Jz/ZrO□ porous coating with a specific composition ratio are provided as the outer layer.
従って、本発明の対象は、鋳型の内面にＮｉメッキ層か
形成され、次いで中間層としてＣｏ／Ｍｏ／Ｃｒ−合金
被覆がそして外側層としてＡ １． ｚ０１／Ｚｒ０ｔ
−多孔質セラミック被覆が設けられ、中間層の合金の組
成が４５〜６０重量％（７）Ｃｏ、２０〜４０重量％の
Ｍｏおよび残量のＣｒでありそしてセラミンク層の組成
が４０〜６０重量％、殊に５５〜６０重量％のＡＩ！、
２０３ と６０〜４０重量％、殊ニ４５〜４０重量％の
ＺｒＯ２であることを特徴とする、鋳造用Ｃｕ合金製パ
ーマネント金型にある。The object of the invention is therefore to form a Ni plating layer on the inner surface of the mold, followed by a Co/Mo/Cr-alloy coating as an intermediate layer and an A1. z01/Zr0t
- a porous ceramic coating is provided, in which the composition of the alloy of the intermediate layer is 45-60% by weight (7) Co, 20-40% by weight Mo and the balance Cr and the composition of the ceramic layer is 40-60% by weight; %, in particular 55-60% by weight of AI! ,
203 and 60 to 40% by weight, especially 45 to 40% by weight of ZrO2.
本発明で使用する銅合金は、Ｎｉメッキの後で行う中間
被覆およびセラミック層被覆の際の溶射に耐えられる４
００’Ｃ以上の軟化点のものであればよい。例えば、特
開昭５９−１５９２４３号公報に記載されている上述の
合金がある。この合金は、ジルコニウムおよびチタンを
含有し且つそれらの少なくとも１つと銅との化合物より
成る析出相が存在する銅合金であり、導電率２０％以上
（ＩＡＣＳ）を有するものである。The copper alloy used in the present invention is a 4-metal alloy that can withstand thermal spraying during the intermediate coating and ceramic layer coating performed after Ni plating.
Any material having a softening point of 00'C or higher may be used. For example, there is the above-mentioned alloy described in JP-A-59-159243. This alloy is a copper alloy that contains zirconium and titanium and has a precipitated phase consisting of a compound of at least one of them and copper, and has an electrical conductivity of 20% or more (IACS).
Ｎｉメッキ層は銅合金の低い軟化点を助成する働きの他
に、次に被覆形成するＣｏ／Ｍｏ／Ｃｏ合金層の溶射に
よる密着をより強固にするのに役立つ。In addition to supporting the low softening point of the copper alloy, the Ni plating layer serves to further strengthen the adhesion of the Co/Mo/Co alloy layer to be formed next by thermal spraying.
二〇Ｎｉメンキ層は、Ｃｏ／Ｍｏ／Ｃｒ合金の溶射の際
にその合金が銅合金にまで達しない程の厚さが必要であ
る。一般には、５０〜３００ μｍの厚さであるのが好
ましい。20 The Ni coating layer needs to be thick enough to prevent the Co/Mo/Cr alloy from reaching the copper alloy during thermal spraying. Generally, a thickness of 50 to 300 μm is preferred.
Ｃｏ／Ｍｏ／Ｃｒ合金層は鋳型の耐久性および耐摩耗性
を高める働きをする。この層は一般に５０〜６００μｍ
の厚さであるのが好ましい。The Co/Mo/Cr alloy layer serves to increase the durability and wear resistance of the mold. This layer is generally 50-600 μm
The thickness is preferably .
セラミック層は、鋳造時にガスを排除する働きの他に、
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。この層の厚さは一般に５０〜５００μｍであるのが
好ましい。In addition to the function of eliminating gas during casting, the ceramic layer also has the following functions:
It also works to significantly improve the heat resistance and durability of the mold. The thickness of this layer is generally preferably from 50 to 500 μm.
本発明の鋳造用銅合金製金型の有利な製造例を以下に説
明する。最初に銅合金製金型の内面にＮｉメッキ層を５
０〜３００ μｍ 、殊に１００〜２００μ麟の厚さで
通例の方法で形成し、必要に応じて型内部水冷装置によ
り水で冷却しなからＮｉメッキ層の上に上述の合金組成
のＣｏ／Ｍｏ／Ｃｒ合金を約１０，０００〜約５，００
０″Ｃでプラズマ溶射または約２．７００″Ｃでジェッ
トコートによって５０〜６００ μｍ、殊に２００〜３
００μｍの厚さで被覆する。次いで上述の組成のセラミ
ック被覆層を同様な条件の溶射法によって５０〜５００
μｍ、殊に２００〜３００μｍの厚さに溶射する。セラ
ミック層には沢山の連続孔が生じ、これがセラミック層
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大きさではなく、顕微鏡にて見る
ことができる程のものである。An advantageous manufacturing example of the copper alloy mold for casting according to the invention will be explained below. First, 5 layers of Ni plating were applied to the inner surface of the copper alloy mold.
0 to 300 μm, especially 100 to 200 μm in thickness, by a customary method, cooled with water using an internal water cooling device if necessary, and then coated with Co/Co/Ni with the above-mentioned alloy composition on the Ni plating layer. Mo/Cr alloy from about 10,000 to about 5,000
50-600 μm, especially 200-3
Coat with a thickness of 00 μm. Next, a ceramic coating layer having the above-mentioned composition was coated with a coating of 50 to 500% by thermal spraying under the same conditions.
It is sprayed to a thickness of .mu.m, in particular 200 to 300 .mu.m. Many continuous pores occur in the ceramic layer, which makes it porous. These porous pores are not large enough to cause irregularities on the surface of the molded product, but are large enough to be seen with a microscope.
本発明の銅合金製金型は、連続孔より成る多孔質セラミ
ック層を有しており、この連続孔が鋳造の際に発生する
ガスを収容し且つ外部に導き出す働きをするので、成形
体の表面にガスによる害を及ぼすことがない。即ち、ふ
かれ（凹凸）の発生がない。The copper alloy mold of the present invention has a porous ceramic layer consisting of continuous pores, and the continuous pores serve to contain gas generated during casting and guide it to the outside, so that the molded product can be No harm caused by gas to the surface. That is, there is no occurrence of blistering (unevenness).
セラミック層を有する本発明の鋳型は、高い耐久製およ
び耐摩耗性を有しており、軟塗型を鋳型内面に塗布する
必要なしに、従来の型に比較して非常に多いショント数
、例えば３０．０００以上ショットの鋳造にも耐え得る
。The mold of the present invention with a ceramic layer has high durability and wear resistance, and has a very high number of molds compared to conventional molds, without the need to apply a soft coat to the mold inner surface, e.g. Can withstand casting of 30,000 or more shots.
本発明を実施例および比較例によって以下に更に詳細に
説明する。The present invention will be explained in more detail below with reference to Examples and Comparative Examples.
災施拠」
０．１８重量％のジルコニウムおよび０．２６重量％の
チタンを含有し、導電率３０χ（ＩＡＣＳ）の銅合金で
製造した金型の内面に、電気メッキ法によって２００μ
ｍの厚さのＮｉメッキ層を設ける。次いでプラズマ溶射
法によって５０重量％（７）Ｃｏ、３０重量％のＭｏお
よび２０重量％のＣｒより成る合金を８０００゛Ｃで溶
射して１５０μｍの被覆膜を形成する。The inner surface of the mold was made of a copper alloy containing 0.18% by weight of zirconium and 0.26% by weight of titanium and had an electrical conductivity of 30χ (IACS).
A Ni plating layer with a thickness of m is provided. Next, an alloy consisting of 50 wt% (7) Co, 30 wt% Mo and 20 wt% Cr is sprayed at 8000°C by plasma spraying to form a coating film of 150 μm.
このようにして形成されたＣｏ／Ｍｏ／Ｃｒ被覆層の上
に、同様な溶射法によって５７重量２のＡ ｆｆｉ ２
０３と４３重量％のＺｒＯ２より成るセラミック混合物
を２５０ μｍの厚さで被覆する。その際の溶射温度は
８０００°Ｃである。セラミック層には非常に小さい沢
山の孔が存在し、多孔質と成っている。On the Co/Mo/Cr coating layer thus formed, Affi 2 of 57 weight 2 was applied by a similar thermal spraying method.
A ceramic mixture of ZrO2 and 43% by weight of ZrO2 is coated with a thickness of 250 μm. The spraying temperature at that time was 8000°C. The ceramic layer has many very small pores, making it porous.
この様にして製造されたパーマネント金型は、３５０〜
４００°Ｃに冷却しながら自動車エンジンのケーシング
の鋳造に用いたところ、３０，０００ショット行っても
、未だ表面に変化がなかっく、成形体の表面状態も良好
であった。The permanent mold manufactured in this way is 350~
When the molded product was used to cast a casing for an automobile engine while being cooled to 400°C, there was still no change in the surface even after 30,000 shots, and the surface condition of the molded product was good.
側鱈硼」
６０重量％Ｃｏ、２５重量％のＭｏおよび１５重量％の
Ｃｒより成る合金を使用しそして５４重量％の１２０３
と４６重ｆｆ１ＸのＺｒＯ□より成るセラミック混合物
を使用する他は、実施例１と同様にパーマネント金型を
製造した。この場合にも実施例１と同等に鋳造実験をし
たところ、同様な良好な結果が得られた。An alloy consisting of 60% by weight Co, 25% by weight Mo and 15% by weight Cr and 54% by weight of 1203 was used.
A permanent mold was manufactured in the same manner as in Example 1, except that a ceramic mixture consisting of ZrO□ and 46-fold ff1X was used. In this case, a casting experiment was conducted in the same manner as in Example 1, and similar good results were obtained.
ル較開
セラミック層を設けない点を除いて、実施例１と同様に
して金型を製造し、実施例１と同様に試験した。A mold was manufactured in the same manner as in Example 1, except that the ceramic layer was not provided, and was tested in the same manner as in Example 1.
この金型の場合には、２００シヨツト毎に市販の塗型剤
（セラミックを水ガラスに練込んだもの）にて塗型をし
ながら８，０００ショットを行ったところ、金型表面に
歪みや亀裂が生じ、使用できない状態となった。また３
、０００シヨツト頃から成形体の表面状態が悪くなった
。In the case of this mold, 8,000 shots were performed while coating the mold with a commercially available mold coating agent (ceramic mixed with water glass) every 200 shots. Cracks formed and the product became unusable. Also 3
,000 shots, the surface condition of the molded product became poor.
［発明の効果］
本発明の金型は、従来の銅合金製金型と比べて、銅合金
の良好な熱伝導性およびそれ故の容易な温度制御性を有
しながら、塗型を行う煩雑さが省略でき、極端に長い寿
命を示すと言う優れた効果を示し、産業への貢献は顕著
なものである。[Effects of the Invention] Compared to conventional copper alloy molds, the mold of the present invention has the good thermal conductivity of copper alloy and therefore easy temperature control, while eliminating the trouble of painting the mold. It has shown excellent effects in that it can eliminate the need for oxidation and has an extremely long lifespan, and its contribution to industry is remarkable.
Claims (1)
してＣｏ／Ｍｏ／Ｃｒ−合金被覆がそして外側層として
Ａｌ＿２Ｏ＿＿３／ＺｒＯ＿２−多孔質セラミック被覆
が設けられ、上記中間層の合金の組成が４５〜６５重量
％（７）Ｃｏ、２０〜４０重量％のＭｏおよび残量のＣ
ｒでありそしてセラミック層の組成が４０〜６０重量％
のＡｌ＿２Ｏ＿３と６０〜４０重量％のＺｒＯ＿２であ
ることを特徴とする、鋳造用Ｃｕ合金製パーマネント金
型。A Ni plating layer is formed on the inner surface of the mold, followed by a Co/Mo/Cr-alloy coating as an intermediate layer and an Al_2O__3/ZrO_2-porous ceramic coating as an outer layer, the composition of the alloy of said intermediate layer being 45~ 65% by weight (7) Co, 20-40% by weight Mo and the balance C
r and the composition of the ceramic layer is 40-60% by weight
A permanent mold made of a Cu alloy for casting, characterized in that it contains Al_2O_3 and 60 to 40% by weight of ZrO_2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30682488A JPH02155532A (en) | 1988-12-06 | 1988-12-06 | Permanent metallic mold made of cu alloy for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30682488A JPH02155532A (en) | 1988-12-06 | 1988-12-06 | Permanent metallic mold made of cu alloy for casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02155532A true JPH02155532A (en) | 1990-06-14 |
Family
ID=17961700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30682488A Pending JPH02155532A (en) | 1988-12-06 | 1988-12-06 | Permanent metallic mold made of cu alloy for casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02155532A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02229643A (en) * | 1989-03-01 | 1990-09-12 | Sugitani Kinzoku Kogyo Kk | Copper alloy-made permanent metallic mold for discontinuous casting |
| JPH04227715A (en) * | 1990-05-07 | 1992-08-17 | Air Prod And Chem Inc | Tertiary amine catalyst for polyurethane |
| KR20150009985A (en) * | 2012-06-27 | 2015-01-27 | 제이에프이 스틸 가부시키가이샤 | Continuous casting mold and method for continuous casting of steel |
-
1988
- 1988-12-06 JP JP30682488A patent/JPH02155532A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02229643A (en) * | 1989-03-01 | 1990-09-12 | Sugitani Kinzoku Kogyo Kk | Copper alloy-made permanent metallic mold for discontinuous casting |
| JPH0635027B2 (en) * | 1989-03-01 | 1994-05-11 | 杉谷金属工業株式会社 | Copper alloy permanent mold for discontinuous casting |
| JPH04227715A (en) * | 1990-05-07 | 1992-08-17 | Air Prod And Chem Inc | Tertiary amine catalyst for polyurethane |
| KR20150009985A (en) * | 2012-06-27 | 2015-01-27 | 제이에프이 스틸 가부시키가이샤 | Continuous casting mold and method for continuous casting of steel |
| US10792729B2 (en) | 2012-06-27 | 2020-10-06 | Jfe Steel Corporation | Continuous casting mold and method for continuous casting of steel |
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