JP2003025058A - Al ALLOY MEMBER FOR CAST-IN AND METHOD FOR CASTING THIS Al ALLOY MEMBER FOR CAST-IN - Google Patents
Al ALLOY MEMBER FOR CAST-IN AND METHOD FOR CASTING THIS Al ALLOY MEMBER FOR CAST-INInfo
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- JP2003025058A JP2003025058A JP2001330061A JP2001330061A JP2003025058A JP 2003025058 A JP2003025058 A JP 2003025058A JP 2001330061 A JP2001330061 A JP 2001330061A JP 2001330061 A JP2001330061 A JP 2001330061A JP 2003025058 A JP2003025058 A JP 2003025058A
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、Ａｌ合金製鋳込み
部材とこのＡｌ合金製鋳込み部材の鋳込み方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an Al alloy cast member and a method for casting the Al alloy cast member.
【０００２】[0002]
【従来の技術】鋳込み部材を鋳込んで製造される製品の
一つに、エンジンブロックがある。エンジンブロック
は、スリーブ（鋳込み部材）とエンジンケース（鋳包み
部材）とを別々に製造し、エンジンケースにスリーブを
鋳込んで製造される。このとき、スリーブとエンジンケ
ースとの密着性が必要であり、これらの密着性を向上さ
せるために従来から様々な方法が試みられている。2. Description of the Related Art An engine block is one of products manufactured by casting cast members. The engine block is manufactured by separately manufacturing a sleeve (casting member) and an engine case (casting member), and casting the sleeve in the engine case. At this time, close contact between the sleeve and the engine case is required, and various methods have been attempted in the past to improve the close contact.
【０００３】特開平１０−９４８６７号公報では、急冷
凝固Ａｌ合金粉末を使用した過共晶Ａｌ−Ｓｉ合金製鋳
込み部材の外表面をコランダム製の粒子でショットして
その表面を荒らし、鋳込み時の密着性を向上させる方法
が開示されている。In Japanese Unexamined Patent Publication No. 10-94867, the outer surface of a cast member made of a hypereutectic Al-Si alloy using a rapidly solidified Al alloy powder is shot with corundum particles to roughen the surface, and when casting is performed, A method for improving adhesion is disclosed.
【０００４】特開昭５９−２１１５６８号公報では、溶
製Ａｌ合金を冷間引き抜きして作製したパイプの外表面
に、２層以上のＡｌまたは鋼の溶射層を形成し、鋳込み
時の密着性を向上させる方法が開示されている。この方
法では、パイプと溶射層との密着性を重視した第１層
と、外表面に凹凸を有する第２層とを設けている。In Japanese Patent Laid-Open No. 59-212568, two or more layers of Al or steel sprayed layers are formed on the outer surface of a pipe produced by cold drawing a molten Al alloy, and the adhesion during casting is improved. Are disclosed. In this method, a first layer that emphasizes the adhesion between the pipe and the sprayed layer and a second layer that has irregularities on the outer surface are provided.
【０００５】ＳＡＥ論文２００１−０１−０４０２号で
は、スプレーフォーミングされた急冷凝固Ａｌ合金を使
用した鋳込み部材の外表面にＺｎ、Ｓｎを火炎溶射し、
重力鋳造する方法が開示されている。In SAE paper 2001-01-0402, Zn and Sn are flame sprayed onto the outer surface of a cast member using a spray-formed rapidly solidified Al alloy.
A method of gravity casting is disclosed.
【０００６】[0006]
【発明が解決しようとする課題】特開平１０−９４８６
７号公報では、鋳込み部材の材料に過共晶Ａｌ−Ｓｉ合
金のみを使用し、この場合は密着性の向上に効果が得ら
れている。しかし、鋳込み部材の全ての外表面で完全な
密着性が得られている訳では無く、さらに高い密着性が
要求されている。また、耐摩耗性を向上させるためにア
ルミナ等の硬質粒子を添加したり、潤滑性能を向上させ
るためにグラファイト等の固体潤滑成分を添加した場合
は、密着性が向上しない。さらに、鋳込み時に高温に曝
された場合でも組織変化が起こらないように、遷移金属
を添加して融点を上げたＡｌ合金製鋳込み部材では、シ
ョットだけでは鋳込み時に高い密着性が得られない、と
いう問題点がある。[Patent Document 1] Japanese Patent Application Laid-Open No. 10-9486
In Japanese Patent Publication No. 7, only a hypereutectic Al-Si alloy is used as the material of the cast member, and in this case, the effect of improving the adhesion is obtained. However, not all the outer surfaces of the cast member have perfect adhesion, and higher adhesion is required. Further, when hard particles such as alumina are added to improve wear resistance, and solid lubricating components such as graphite are added to improve lubrication performance, the adhesion does not improve. Furthermore, in order to prevent a structural change even when exposed to high temperatures during casting, with an Al alloy cast member having a melting point raised by adding a transition metal, high adhesion cannot be obtained at the time of casting only by shots. There is a problem.
【０００７】特開昭５９−２１１５６８号公報では、溶
製Ａｌ合金を冷間引き抜きして作製したパイプの外表面
に溶射層を形成している。しかし、冷間引き抜き加工に
よって作製されたパイプは、表面の面粗度が小さく滑ら
かなので、溶射滴のパイプへの密着性が非常に悪い。そ
のため、溶射する前にパイプの外表面を脱脂洗浄した
り、複数の被膜層を形成する必要があり、経済性に劣
る。In Japanese Patent Laid-Open No. 59-112568, a sprayed layer is formed on the outer surface of a pipe produced by cold drawing a melted Al alloy. However, since the pipe manufactured by cold drawing has a small surface roughness and is smooth, the adhesion of sprayed droplets to the pipe is very poor. Therefore, it is necessary to degrease and clean the outer surface of the pipe and to form a plurality of coating layers before thermal spraying, which is inferior in economic efficiency.
【０００８】ＳＡＥ論文２００１−０１−０４０２号で
は、スプレーフォーミングされた急冷凝固Ａｌ合金を使
用した鋳込み部材にＺｎ、Ｓｎを火炎溶射し、重力鋳造
する方法が開示されている。しかし、火炎溶射の場合、
溶射された後に火炎で加熱されるため溶射層が酸化しや
すく、鋳込み時に高い密着性が得られない。また、溶射
には粉末状の金属材料を使用するため、溶射する前に既
に材料が酸化している可能性がある。[0008] SAE paper 2001-01-0402 discloses a method of flame-spraying Zn and Sn on a cast member using a spray-formed rapidly solidified Al alloy and performing gravity casting. But in the case of flame spraying,
Since it is heated by flame after being sprayed, the sprayed layer is easily oxidized and high adhesion cannot be obtained during casting. Further, since a powdery metal material is used for thermal spraying, there is a possibility that the material has already been oxidized before thermal spraying.
【０００９】[0009]
【課題を解決するための手段】本発明のＡｌ合金製鋳込
み部材は、押出加工で外表面に押出肌を形成した押出部
材と、この押出肌が形成されている押出部材の外表面
に、１回の溶射で金属材料を付着させた溶射層とからな
る。これにより、鋳包み部材との密着性が高いＡｌ合金
製鋳込み部材を得ることができる。An Al alloy casting member according to the present invention comprises an extruded member having an extruded skin formed on its outer surface by extrusion and an outer surface of the extruded member having this extruded skin. It consists of a sprayed layer to which a metal material is attached by a single spraying. This makes it possible to obtain an Al alloy cast member having high adhesion to the cast-in member.
【００１０】また、本発明のＡｌ合金製鋳込み部材の鋳
込み方法は、大きく分けて以下の３つの工程からなる。
まず、アトマイズされた急冷凝固Ａｌ合金粉末、または
アトマイズされた急冷凝固Ａｌ合金粉末と硬質粒子また
は固形潤滑剤粒子の少なくともいずれか一方との混合物
からなる粉末、あるいはスプレーフォーミングされた急
冷凝固Ａｌ合金を使用して熱間押出加工し、外表面に押
出肌を有する押出部材を作製する。次に、この押出部材
の外表面に金属材料を１回だけ溶射して溶射層を有する
Ａｌ合金製鋳込み部材を作製する。そして、この鋳込み
部材をダイカスト方式で鋳包み部材に鋳込む。このよう
な方法とすることで、鋳込み部材と鋳包み部材との密着
性を向上させることができる。The casting method of the Al alloy casting member of the present invention is roughly divided into the following three steps.
First, an atomized rapidly solidified Al alloy powder, or a powder composed of a mixture of atomized rapidly solidified Al alloy powder and at least one of hard particles and solid lubricant particles, or a spray-formed rapidly solidified Al alloy is prepared. It is used for hot extrusion to produce an extruded member having an extruded skin on the outer surface. Next, a metal material is sprayed only once on the outer surface of this extruded member to produce an Al alloy cast member having a sprayed layer. Then, the cast member is cast into the cast-in member by a die casting method. With such a method, the adhesion between the cast member and the cast-in member can be improved.
【００１１】[0011]
【発明の実施の形態】本発明の鋳込み部材の押出部材
は、その外表面に押出加工した後の押出肌が形成されて
いる。この押出肌の断面形状は図３のようになってお
り、図４に示すようなショットを行った表面に比べ、同
じような大きさの凹凸が多く、その凹凸の立ち上がり角
度も鋭い形状をしている。さらに、その表面には、酸化
被膜や異物が付着していないため、溶射層との密着性に
優れている。BEST MODE FOR CARRYING OUT THE INVENTION The extruded member of the cast member according to the present invention has an extruded surface after extrusion processing formed on the outer surface thereof. The cross-sectional shape of this extruded skin is as shown in FIG. 3, and compared to the surface shot as shown in FIG. 4, there are many irregularities of similar size and the rising angle of the irregularities is also sharp. ing. Further, since no oxide film or foreign matter is attached to the surface, it has excellent adhesion to the sprayed layer.
【００１２】さらに、溶射層を形成するための溶射を１
回行うだけで良く、ショットのような前処理を行う必要
が無いため、経済性にも優れている。また、溶射の回数
を２回以上とすると、既に形成されている溶射層が再加
熱され、その表面に酸化被膜が形成されるため、鋳包み
部材との密着性が低下する。Furthermore, the thermal spraying for forming the thermal sprayed layer 1
It only needs to be performed once, and there is no need for pretreatment such as shots, so it is also economical. Further, when the number of times of thermal spraying is set to 2 or more, the thermal sprayed layer that has already been formed is reheated and an oxide film is formed on the surface of the thermal sprayed layer, so that the adhesion to the cast-in member decreases.
【００１３】溶射に使用される金属材料の材質は、Ｚｎ
を５０％以上含有するか、Ａｌを５０％以上含有する
か、またはＣｕを５０％以上含有するものであることが
好ましい。Ｚｎ、Ａｌを含有するものは融点が低く、Ｃ
ｕを含有するものに関しては融点は高いが低温において
もＡｌ合金との反応性が高いため、Ａｌ合金製鋳包み部
材との密着性を向上させることができる。The metal material used for thermal spraying is Zn
Is preferably contained at 50% or more, Al is contained at 50% or more, or Cu is contained at 50% or more. A material containing Zn and Al has a low melting point and C
A material containing u has a high melting point, but has a high reactivity with an Al alloy even at a low temperature, so that the adhesion with an Al alloy cast-in member can be improved.
【００１４】また、さらに好ましくは、鋳込み部材より
も融点が低い材料である、Ａｌ−Ｃｕ共晶（融点：５４
８℃）やＡｌ−Ｓｉ共晶（融点：５７７℃）や低融点Ｚ
ｎ（融点：４１９℃）等のコーティングがよい。このよ
うな異種金属の溶射層を設けることで、鋳込み部材が硬
質粒子や固体潤滑成分を含んでいても、十分な密着性を
得ることができる。特にＺｎの場合は、Ａｌ合金との反
応性も良く、Ａｌ合金に比べて融点が低くてよい。Further preferably, Al-Cu eutectic (melting point: 54 is a material having a lower melting point than the cast member.
8 ° C), Al-Si eutectic (melting point: 577 ° C) and low melting point Z
A coating such as n (melting point: 419 ° C.) is preferable. By providing such a sprayed layer of different metals, sufficient adhesion can be obtained even if the cast member contains hard particles or a solid lubricating component. Particularly in the case of Zn, the reactivity with Al alloy is good and the melting point may be lower than that of Al alloy.
【００１５】また、ＣｕはＡｌと反応して高融点の化合
物を形成し、高温に晒されても密着性が劣化しないた
め、熱処理を施すものなどに適する。Further, Cu reacts with Al to form a compound having a high melting point, and its adhesiveness does not deteriorate even when it is exposed to a high temperature, so that it is suitable for heat treatment.
【００１６】溶射層の厚みは５μｍ以上２００μｍ以下
であることが好ましい。溶射層の厚みを５μｍ以上とす
れば、鋳込み部材の外表面に金属材料を隙間無く付着さ
せ、溶射層の無い箇所をなくすことができる。また、溶
射層の厚みを２００μｍ以下とすれば、１回の溶射で溶
射層を形成することができ、経済的にも優れている。The thickness of the sprayed layer is preferably 5 μm or more and 200 μm or less. When the thickness of the sprayed layer is 5 μm or more, the metal material can be adhered to the outer surface of the casting member without leaving a gap, and the portion without the sprayed layer can be eliminated. Further, when the thickness of the sprayed layer is 200 μm or less, the sprayed layer can be formed by one spraying, which is economically excellent.
【００１７】鋳込み部材の外表面の面粗度は、Ｒｚで１
以上５０以下であることが好ましい。Ｒｚを１以上とす
れば、面を荒らすことの効果が得られ、密着性を向上す
る。また、Ｒｚを５０以下とすれば、信頼性を低下させ
る程の亀裂の発生を防止することができ、１回の溶射で
隙間無く溶射層を形成することができる。The surface roughness of the outer surface of the cast member is 1 in Rz.
It is preferably 50 or more and 50 or less. When Rz is 1 or more, the effect of roughening the surface is obtained, and the adhesion is improved. Further, when Rz is 50 or less, the occurrence of cracks to the extent that the reliability is lowered can be prevented, and the sprayed layer can be formed without gaps by one spraying.
【００１８】押出部材には、アトマイズされた急冷凝固
Ａｌ合金粉末、あるいはアトマイズされた急冷凝固Ａｌ
合金粉末と硬質粒子または固形潤滑剤粒子の少なくとも
いずれか一方との混合物を使用することが好ましい。ま
た、スプレーフォーミングされた急冷凝固Ａｌ合金を使
用しても良い。The extruded member has atomized rapidly solidified Al alloy powder or atomized rapidly solidified Al.
It is preferable to use a mixture of alloy powder and hard particles and / or solid lubricant particles. Alternatively, a spray-formed rapidly solidified Al alloy may be used.
【００１９】アトマイズされた急冷凝固Ａｌ合金粉末
や、スプレーフォーミングされた急冷凝固Ａｌ合金を使
用すれば、通常ならば粗大化してしまう遷移金属を添加
することが可能となり、合金の融点を高めることができ
る。また、アトマイズされた急冷凝固Ａｌ合金粉末を使
用すれば、混合法によって硬質粒子と固形潤滑剤粒子と
を均一に容易に混合させることができ、摺動特性を飛躍
的に向上させることができる。If atomized rapidly solidified Al alloy powder or spray formed rapidly solidified Al alloy is used, it becomes possible to add a transition metal that would otherwise become coarse, and the melting point of the alloy can be increased. it can. Further, when the atomized rapidly solidified Al alloy powder is used, the hard particles and the solid lubricant particles can be easily and uniformly mixed by the mixing method, and the sliding characteristics can be dramatically improved.
【００２０】溶射はアーク溶射であることが好ましい。
アーク溶射とすれば、溶射層の酸化を防ぐことができ
る。さらに、溶射する際に、線状の金属材料を溶かしな
がら使用するため、粉末状の金属材料を使用する火炎溶
射に比べて、材料が酸化する可能性が低く、密着性を向
上させることができる。このとき、使用する線状の金属
材料の一方をＡｌ，他方をＺｎとすれば、溶射層をＡｌ
とＺｎの複合被膜とすることができ、その比率を変える
ことで容易に融点を制御することができる。ただし、Ｃ
ｕのようにＡｌやＺｎに比べ耐酸化性に優れる金属材料
を使用する場合は、火炎溶射を使用することも可能であ
る。The thermal spraying is preferably arc thermal spraying.
The arc spraying can prevent oxidation of the sprayed layer. Further, since the linear metal material is used while being melted during the thermal spraying, the possibility of the material being oxidized is lower and the adhesion can be improved as compared with the flame spraying using the powdery metallic material. . At this time, if one of the linear metal materials to be used is Al and the other is Zn, the sprayed layer is made of Al.
And a Zn composite film can be formed, and the melting point can be easily controlled by changing the ratio. However, C
When using a metal material such as u which is more excellent in oxidation resistance than Al or Zn, flame spraying can be used.
【００２１】[0021]
【実施例】表１に今回の実験で使用した鋳込み部材の材
料組成および製造方法の一覧を示す。[Examples] Table 1 shows a list of material compositions and manufacturing methods of cast members used in this experiment.
【００２２】[0022]
【表１】 [Table 1]
【００２３】まず、Ａｌ合金の溶湯を約３ＭＰａの圧力
で空気アトマイズした急冷凝固Ａｌ合金粉末と、スプレ
ーフォーミングしたＡｌ−２５Ｓｉ−２０２４合金のビ
レットをそれぞれ作製した。このとき、急冷凝固Ａｌ合
金粉末の組成は、Ａｌ―２５Ｓｉ−１Ｆｅ−２０２４、
Ａｌ−２５Ｓｉ−２Ｆｅ−２０２４およびＡｌ−２５Ｓ
ｉ−２０２４の３種類とした。First, a rapidly solidified Al alloy powder obtained by air atomizing a molten aluminum alloy at a pressure of about 3 MPa and a billet of Al-25Si-2024 alloy spray-formed were prepared. At this time, the composition of the rapidly solidified Al alloy powder is Al-25Si-1Fe-2024,
Al-25Si-2Fe-2024 and Al-25S
There are three types, i-2024.
【００２４】次に、Ａｌ―２５Ｓｉ−１Ｆｅ−２０２４
の急冷凝固Ａｌ合金粉末について、アルミナ粒子を５重
量％とグラファイト粒子を１重量％添加し、Ｖ型混合ミ
キサーで均一に分散するように混合した。このとき、Ａ
ｌ−２５Ｓｉ−２Ｆｅ−２０２４、およびＡｌ−２５Ｓ
ｉ−２０２４粉末は、硬質粒子や固体潤滑材を何も混合
しなかった。Next, Al-25Si-1Fe-2024
5% by weight of alumina particles and 1% by weight of graphite particles were added to the rapidly solidified Al alloy powder, and mixed by a V-type mixing mixer so as to be uniformly dispersed. At this time, A
1-25Si-2Fe-2024, and Al-25S
The i-2024 powder did not mix any hard particles or solid lubricant.
【００２５】この粉末をＣＩＰ（Ｃｏｌｄ Ｉｓｏｓｔ
ａｔｉｃ Ｐｒｅｓｓｉｎｇ）したもの、またはスプレ
ーフォーミングしたビレットを熱間押出加工し、外径φ
８５ｍｍ，内径φ７５ｍｍの円筒状の押出部材を作製し
た。このとき、ダイスのデザインを変え、外表面の面粗
度をＲｚ＝０．５、３、２０、４０、７０と変化させ
た。また、比較のために、円筒部材にコランダム製の粒
子でショットし、その外表面の面粗度をＲｚ＝２５にし
たものと、円筒部材に切削加工でＲｚ＝３１にしたもの
も準備した。This powder was applied to CIP (Cold Isost).
The diameter of the billet that has been subjected to attic pressing) or the spray-formed billet is hot extruded
A cylindrical extruded member having a diameter of 85 mm and an inner diameter of 75 mm was produced. At this time, the design of the die was changed and the surface roughness of the outer surface was changed to Rz = 0.5, 3, 20, 40, 70. For comparison, a cylindrical member shot with corundum particles and the surface roughness of its outer surface set to Rz = 25 and a cylindrical member cut to Rz = 31 were also prepared.
【００２６】このようにして作製した押出部材または円
筒部材の外表面に、アーク溶射で金属材料を付着させて
溶射層を形成し、鋳込み部材を作製した。金属材料に
は、Ｚｎ、Ａｌ、Ａｌ−１２Ｓｉ合金、Ｚｎ−２Ａｌ合
金、Ｃｕの線材を使用した。また、金属材料の一方をＡ
ｌ、他方をＺｎとしてＺｎ−３０Ａｌ配合となるように
アーク溶射し、溶射層を形成したものも作製した。A metal material was adhered to the outer surface of the extruded member or the cylindrical member thus manufactured by arc spraying to form a sprayed layer, and a cast member was manufactured. A wire material of Zn, Al, Al-12Si alloy, Zn-2Al alloy, or Cu was used as the metal material. In addition, one of the metal materials is A
There was also prepared one in which the thermal sprayed layer was formed by arc-spraying so that the Zn-30Al composition would be Zn-30Al, with the other being Zn.
【００２７】このとき、長さ１００ｍｍ、表面粗さＲｚ
＝２０の押出部材を、１回転を３秒間として溶射する
と、溶射層の厚みは２０μｍとなった。これを標準と
し、回転速度を変化させて、溶射層の厚みが７、４０、
１８０μｍのものも作製した。At this time, the length is 100 mm and the surface roughness is Rz.
When the extruded member of No. 20 was sprayed for 1 second for 3 seconds, the thickness of the sprayed layer was 20 μm. With this as the standard, the rotational speed was changed and the thickness of the sprayed layer was 7, 40,
A 180 μm film was also produced.
【００２８】また、本願発明の実施例に相当するもの
は、溶射の回数を１回とし、比較のために溶射の回数を
２または３回のものも準備した。さらに、比較のため
に、火炎溶射で溶射層を形成した鋳込み部材も準備し
た。このときの溶射材は、Ｚｎ粉末を使用した。Further, in the example corresponding to the embodiment of the present invention, the number of times of thermal spraying was set to 1 and the number of times of thermal spraying was set to 2 or 3 for comparison. Further, for comparison, a cast member having a sprayed layer formed by flame spraying was also prepared. Zn powder was used as the thermal spray material at this time.
【００２９】このようにして作製した鋳込み部材にて、
押出部材または円筒部材と溶射層との密着性について調
査を実施した。密着性の調査は、市販のセロハンテープ
を使用し、セロハンテープを鋳込み部材に強く押しつけ
て剥がした時、セロハンに肉眼で少しでも金属材料が付
着しているものはテープ剥離判定項目を×とした。With the cast member thus produced,
An investigation was conducted on the adhesion between the extruded member or the cylindrical member and the sprayed layer. Adhesion was investigated by using commercially available cellophane tape, and when the cellophane tape was strongly pressed against the casting member and peeled off, the tape peeling judgment item was marked as × if the metal material adhered to the cellophane even with the naked eye. .
【００３０】テープ剥離試験の結果を表１に示す。その
結果、Ｎｏ．１３の円筒部材とＮｏ．１４の押出部材の
密着力が悪く、セロハンテープに金属材料の付着が見ら
れた。Ｎｏ．１３の場合は、表面粗さがＲｚ＝３１ある
ものの、切削加工で外表面を荒らしているため十分な密
着性が得られなかった。また、Ｎｏ．１４の場合は、表
面粗さが低く滑らかすぎたため、十分な密着性が得られ
なかった。これらの、テープ剥離判定項目が×となった
ものは、次工程の鋳込み試験は行わなかった。The results of the tape peel test are shown in Table 1. As a result, No. No. 13 cylindrical member and No. 13 Adhesion of the extruded member of No. 14 was poor, and adhesion of the metal material was found on the cellophane tape. No. In the case of No. 13, although the surface roughness was Rz = 31, sufficient adhesion could not be obtained because the outer surface was roughened by cutting. In addition, No. In the case of 14, the surface roughness was low and it was too smooth, so that sufficient adhesion could not be obtained. For these tape peeling judgment items with x, the casting test in the next step was not performed.
【００３１】次に、図１に模式図で示すダイカスト実験
装置を使用し、鋳包み部材への鋳込みを行った。以下に
ダイカスト実験装置の作用について説明する。まず、溶
湯３を入れたるつぼ５を加熱炉４にセットする。るつぼ
５の上部には、シャッター７のついた金型台６がパッキ
ン９を挟んで設置されている。シャッター７はるつぼ５
内の圧力が十分加圧するまで閉じている。この金型台６
には通気口８が設けられており、金型台６の上には鋳込
み部材１をセットした金型２がセットされている。Next, the die-casting experimental apparatus shown in the schematic diagram of FIG. 1 was used to perform casting into the cast-in member. The operation of the die casting experimental apparatus will be described below. First, the crucible 5 containing the molten metal 3 is set in the heating furnace 4. On the upper part of the crucible 5, a mold stand 6 with a shutter 7 is installed with a packing 9 in between. Shutter 7 Crucible 5
It is closed until the internal pressure is sufficiently increased. This mold stand 6
A ventilation hole 8 is provided in the mold, and a mold 2 in which the casting member 1 is set is set on the mold base 6.
【００３２】ここで、通気口８から９．８ＭＰａに圧縮
された空気を注入すると、るつぼ５内の圧力が加圧さ
れ、十分に加圧された状態でシャッター７が開いて図１
に示す状態になる。シャッター７が開くと、るつぼ５に
入った溶湯３が上昇して金型２の中に充填される。金型
２の中に充填された溶湯３は、そのまま冷却されて鋳込
みが完了する。この後、ピン孔１０にノックアウトピン
を差込んで、鋳込まれた状態の鋳込み部材を金型から取
り外し、その上下を切断して高さ８０ｍｍの図２のよう
なめがね状のリングを作製した。なお、今回の実験で
は、溶湯にはＡＤＣ１２を使用し、鋳込み時の溶湯温度
は７００℃とした。Here, when air compressed to 9.8 MPa from the ventilation port 8 is injected, the pressure in the crucible 5 is increased, and the shutter 7 is opened with the pressure being sufficiently increased, as shown in FIG.
The state becomes as shown in. When the shutter 7 is opened, the molten metal 3 that has entered the crucible 5 rises and is filled in the mold 2. The molten metal 3 filled in the mold 2 is cooled as it is, and the casting is completed. After that, a knockout pin was inserted into the pin hole 10, the cast member in the cast state was removed from the mold, and the upper and lower sides thereof were cut to produce an eyeglass ring having a height of 80 mm as shown in FIG. . In this experiment, ADC12 was used for the molten metal, and the molten metal temperature during casting was 700 ° C.
【００３３】また、比較のために重力鋳造による鋳込み
も行った。このときは、図１の金型部を取り外して上下
を逆にし、これにＡＤＣ１２を注入した。For comparison, casting by gravity casting was also performed. At this time, the mold part of FIG. 1 was removed, turned upside down, and ADC12 was injected into this.
【００３４】このようにして作製しためがね状リングを
使用し、鋳込み密着性の評価を３種類行った。１つは、
めがね状リングを水中に入れて内周側から超音波探傷機
のプローブを回転させて、鋳込み部材１と鋳包み部材１
１との接合面１２にゲートを掛けた。このとき、接合面
１２からの反射波が存在しない場合は密着している、反
射波が存在しない場合は密着していないと判断し、接合
面１２の全領域の８０％以上が密着しているものを合格
とした。Using the eyeglass ring produced in this way, three kinds of evaluations of casting adhesion were performed. One is
The spectacle ring is put in water and the probe of the ultrasonic flaw detector is rotated from the inner peripheral side, so that the cast member 1 and the cast-in member 1
A gate was applied to the joint surface 12 with 1. At this time, if the reflected wave from the joint surface 12 does not exist, it is determined that the contact surface is in close contact, and if the reflected wave does not exist, it is determined that the contact surface is not in contact, and 80% or more of the entire area of the joint surface 12 is in contact. The one was accepted.
【００３５】ふたつめは、めがね状リングの上下面でス
リーブとＡＤＣ１２の間の接合面１２を１０００倍の倍
率の光学顕微鏡で観察した。このとき、全く隙間の無い
ものを隙間の判定を合格とした。In the second eye, the joint surface 12 between the sleeve and the ADC 12 on the upper and lower surfaces of the spectacle ring was observed with an optical microscope at a magnification of 1000 times. At this time, those having no gap were judged to have passed.
【００３６】もうひとつは、Ｚｎ、ＡｌおよびＣｕを溶
射したものについて、熱処理に相当する２２０℃×１０
０Ｈｒ保持後の密着率の評価を行った。この密着率の評
価を行ったものについては、密着界面を含む形で引っ張
り試験片を作製し、密着強度も評価した。The other is that the thermal spraying of Zn, Al and Cu is 220 ° C. × 10 which corresponds to the heat treatment.
The adhesion rate after holding for 0 hr was evaluated. With respect to the evaluation of the adhesion ratio, a tensile test piece was prepared in a form including an adhesion interface, and the adhesion strength was also evaluated.
【００３７】鋳込み試験の結果を表１に示す。Ｎｏ．１
２は、ショット加工で表面処理しているため、鋳込み部
材１と鋳包み部材１１との間に隙間が存在し、満足する
密着率を得ることができなかった。Ｎｏ．１５は、表面
粗さがあらすぎて、十分な密着性が得られなかった。Ｎ
ｏ．１６は火炎溶射を行っているため、Ｎｏ．１７，１
８は溶射回数が多いため、共に溶射層が酸化してしま
い、十分な密着性が得られなかった。Ｎｏ．１９は、溶
着層が薄すぎて鋳込み部材１の表面に溶射層が形成され
ていない部分が存在し、隙間が発生した。Ｎｏ．２０に
ついては、密着率は高い値が得られているが、これより
溶着層の厚みが薄いものとその効果に差は見られず、隙
間も存在した。Ｎｏ．２１は，重力鋳造で鋳込んだた
め、密着性がかなり低かった。Ｎｏ．２２，２３，２５
については、溶射層を形成させずに鋳込んだものである
が、共に密着性を満足させることができなかった。また
２２０℃×１００Ｈｒ保持したものに関しては、Ｎｏ．
１，８については密着率が低下しているが、Ｎｏ．２７
は密着率の低下は生じなかった。これは界面に高融点の
Ａｌ−Ｃｕ合金の反応層が形成され、界面強度が上昇し
たことによると思われる。The results of the casting test are shown in Table 1. No. 1
In No. 2, since the surface treatment was performed by shot processing, there was a gap between the cast-in member 1 and the cast-in member 11, and it was not possible to obtain a satisfactory adhesion rate. No. In No. 15, the surface roughness was so rough that sufficient adhesion could not be obtained. N
o. Since No. 16 is flame sprayed, 17,1
In No. 8, since the number of times of thermal spraying was large, the thermal sprayed layer was both oxidized, and sufficient adhesion could not be obtained. No. In No. 19, the weld layer was too thin and there was a portion where the spray layer was not formed on the surface of the cast member 1, and a gap was generated. No. Regarding No. 20, a high value was obtained for the adhesion ratio, but there was no difference in the effect with a thinner welding layer than this, and there were gaps. No. Since No. 21 was cast by gravity casting, its adhesion was considerably low. No. 22, 23, 25
Regarding No. 3, although it was cast without forming a sprayed layer, the adhesion could not be satisfied in both cases. Regarding those held at 220 ° C x 100 hours, No.
Regarding Nos. 1 and 8, the adhesion rate is low, but No. 27
Did not cause a decrease in adhesion. This is probably because a reaction layer of a high melting point Al—Cu alloy was formed at the interface, and the interface strength was increased.
【００３８】[0038]
【発明の効果】以上説明したように、本発明のＡｌ合金
製鋳込み部材によれば、鋳包み部材との密着性を向上さ
せることができる。さらに、１回の溶射で溶射層を形成
することができ、経済的にも優れている。As described above, according to the cast member made of Al alloy of the present invention, the adhesion with the cast-in member can be improved. Further, the sprayed layer can be formed by one spraying, which is economically excellent.
【図１】本発明に使用したダイカスト実験装置を示す模
式図である。FIG. 1 is a schematic diagram showing a die casting test apparatus used in the present invention.
【図２】本発明の鋳込み試験に使用しためがね状リング
の断面図である。FIG. 2 is a cross-sectional view of the eyeglass ring used in the casting test of the present invention.
【図３】本発明の押出部材の外表面を示す概念図であ
る。FIG. 3 is a conceptual diagram showing an outer surface of an extruded member of the present invention.
【図４】従来の技術の円筒部材の外表面を示す概念図で
ある。FIG. 4 is a conceptual diagram showing an outer surface of a conventional cylindrical member.
１ 鋳込み部材 ２ 金型 ３ 溶湯 ４ 加熱炉 ５ るつぼ ６ 金型台 ７ シャッター ８ 通気口 ９ パッキン １０ ピン孔 １１ 鋳包み部材 １２ 接合面 1 Casting member 2 mold 3 molten metal 4 heating furnace 5 crucibles 6 Mold stand 7 shutter 8 vents 9 packing 10 pin hole 11 Cast-in member 12 Bonding surface
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ０２Ｆ 1/00 Ｆ０２Ｆ 1/00 Ｋ Ｒ (72)発明者 亀田 諒二 兵庫県伊丹市昆陽北一丁目１番１号 住友 電気工業株式会社伊丹製作所内 Ｆターム(参考） 3G024 AA25 BA10 FA00 FA13 FA14 GA02 GA03 GA06 GA19 HA06 HA07 4K031 CA05 CB31 CB35 CB37 DA03─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI theme code (reference) F02F 1/00 F02F 1/00 KR (72) Inventor Ryoji Kameda 1-chome, Kunyokita, Itami City, Hyogo Prefecture No. 1 Sumitomo Electric Industries, Ltd. Itami Factory F-term (reference) 3G024 AA25 BA10 FA00 FA13 FA14 GA02 GA03 GA06 GA19 HA06 HA07 4K031 CA05 CB31 CB35 CB37 DA03
Claims (8)
出部材と、 この押出肌が形成されている押出部材の外表面に、１回
の溶射で金属材料を付着させた溶射層と、を有している
ことを特徴とするＡｌ合金製鋳込み部材。1. An extruded member having an extruded skin formed on the outer surface by extrusion, and a sprayed layer having a metallic material adhered to the outer surface of the extruded member having the extruded skin by a single spraying operation. A cast member made of an Al alloy, which comprises:
ｕのいずれかを５０％以上含有している請求項１記載の
Ａｌ合金製鋳込み部材。2. The metal material is Zn, Al or C
The Al alloy cast member according to claim 1, which contains 50% or more of any one of u.
μｍ以下である請求項１記載のＡｌ合金製鋳込み部材。3. The sprayed layer has a thickness of 5 μm or more and 200 or more.
The cast member made of an Al alloy according to claim 1, having a thickness of not more than μm.
で１以上５０以下である請求項１記載のＡｌ合金製鋳込
み部材。4. The surface roughness of the outer surface of the extruded member is Rz.
The cast alloy member made of an Al alloy according to claim 1, wherein the cast iron member is 1 to 50 inclusive.
凝固Ａｌ合金粉末、またはアトマイズされた急冷凝固Ａ
ｌ合金粉末と硬質粒子または固形潤滑剤粒子の少なくと
もいずれか一方との混合物からなる粉末、あるいはスプ
レーフォーミングされた急冷凝固Ａｌ合金からなる請求
項１に記載のＡｌ合金製鋳込み部材。5. The extruded member is an atomized rapidly solidified Al alloy powder or an atomized rapidly solidified A
The Al alloy casting member according to claim 1, wherein the alloy alloy powder is a powder made of a mixture of at least one of hard particles and solid lubricant particles, or a spray-formed rapidly solidified Al alloy.
末、またはアトマイズされた急冷凝固Ａｌ合金粉末と硬
質粒子または固形潤滑剤粒子の少なくともいずれか一方
との混合物からなる粉末、あるいはスプレーフォーミン
グされた急冷凝固Ａｌ合金を使用して熱間押出加工し、
外表面に押出肌を有する押出部材を作製する工程と、 この押出部材の外表面に金属材料を１回だけ溶射して溶
射層を有するＡｌ合金製鋳込み部材を作製する工程と、 この鋳込み部材をダイカスト方式で鋳包み部材に鋳込む
工程とを含むＡｌ合金製鋳込み部材の鋳込み方法。6. Atomized rapidly solidified Al alloy powder, or a powder comprising a mixture of atomized rapidly solidified Al alloy powder and at least one of hard particles and solid lubricant particles, or spray formed rapid solidification. Hot extrusion using Al alloy,
A step of producing an extruded member having an extruded skin on the outer surface, a step of producing an Al alloy cast member having a sprayed layer by thermally spraying a metal material once on the outer surface of the extruded member, and A casting method of an Al alloy casting member, including a step of casting the casting member by a die casting method.
載のＡｌ合金製鋳込み部材の鋳込み方法。7. The casting method for an Al alloy casting member according to claim 6, wherein the thermal spraying is arc spraying.
材料を同時に使用する請求項６記載のＡｌ合金製鋳込み
部材の鋳込み方法。8. The method of casting an Al alloy cast member according to claim 6, wherein different types of linear metal materials are simultaneously used during arc spraying.
Priority Applications (1)
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|---|---|---|---|
| JP2001330061A JP2003025058A (en) | 2001-05-09 | 2001-10-29 | Al ALLOY MEMBER FOR CAST-IN AND METHOD FOR CASTING THIS Al ALLOY MEMBER FOR CAST-IN |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001138769 | 2001-05-09 | ||
| JP2001-138769 | 2001-05-09 | ||
| JP2001330061A JP2003025058A (en) | 2001-05-09 | 2001-10-29 | Al ALLOY MEMBER FOR CAST-IN AND METHOD FOR CASTING THIS Al ALLOY MEMBER FOR CAST-IN |
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| JP2003025058A true JP2003025058A (en) | 2003-01-28 |
Family
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| WO2009041644A1 (en) * | 2007-09-28 | 2009-04-02 | Nippon Piston Ring Co., Ltd. | Cast iron member with sprayed coating for insert, process for producing the cast iron member, and cylinder liner with sprayed coating for insert |
| JP2010133424A (en) * | 2010-02-22 | 2010-06-17 | Toyota Motor Corp | Method of manufacturing cylinder liner |
| JP2010156050A (en) * | 2008-12-29 | 2010-07-15 | Yoosung Enterprise Co Ltd | Cylinder liner and method of manufacturing the same |
| CN105033225A (en) * | 2015-06-26 | 2015-11-11 | 东南大学 | Low-pressure core filling preparation technology of copper-clad aluminum composite material |
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| JP2000033455A (en) * | 1998-07-17 | 2000-02-02 | Yamaha Motor Co Ltd | Forged sleeve for internal combustion engine, its manufacture and cylinder block using the sleeve |
| JP2001234806A (en) * | 2000-02-21 | 2001-08-31 | Toyota Motor Corp | Cast-in method and cast-in product |
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| US7882818B2 (en) | 2005-07-08 | 2011-02-08 | Toyota Jidosha Kabushiki Kaisha | Cylinder liner and engine |
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| JP2010156050A (en) * | 2008-12-29 | 2010-07-15 | Yoosung Enterprise Co Ltd | Cylinder liner and method of manufacturing the same |
| JP2010133424A (en) * | 2010-02-22 | 2010-06-17 | Toyota Motor Corp | Method of manufacturing cylinder liner |
| CN105033225A (en) * | 2015-06-26 | 2015-11-11 | 东南大学 | Low-pressure core filling preparation technology of copper-clad aluminum composite material |
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