JPS58112649A - Casting method for composite member - Google Patents
Casting method for composite memberInfo
- Publication number
- JPS58112649A JPS58112649A JP21109481A JP21109481A JPS58112649A JP S58112649 A JPS58112649 A JP S58112649A JP 21109481 A JP21109481 A JP 21109481A JP 21109481 A JP21109481 A JP 21109481A JP S58112649 A JPS58112649 A JP S58112649A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- molten
- cast
- preheated
- metal
- 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 10
- 239000002131 composite material Substances 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 title claims description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 46
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 28
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 10
- 239000011247 coating layer Substances 0.000 abstract description 4
- 230000004927 fusion Effects 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 229910001208 Crucible steel Inorganic materials 0.000 description 3
- 244000183278 Nephelium litchi Species 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- -1 ferrous metals Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 235000015742 Nephelium litchi Nutrition 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、例えば、内燃機関の鋳造において、鋳鉄又は
鋼製部品からなるライナ等の鉄系金属を、アルミニウム
合金等の異種金属で鋳包む複合部材の鋳造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for casting a composite member, for example, in the casting of an internal combustion engine, in which a ferrous metal such as a liner made of cast iron or steel parts is cast with a dissimilar metal such as an aluminum alloy.
近年、内燃機関のシリンダブロック等においては、高い
耐熱性と耐摩耗性及び軽量化の要請に応えるため、例え
ば、ライナ等の耐摩耗性等などを要求される部分を、鋳
鉄又は鋼製材料で製作し、このライナを取シ囲むシリン
ダボディを、軽量で熱伝導の良いアルミニウム合金で鋳
包む方法が行なわれている。このように、鉄系金属をア
ルミニウム合金で鋳包む方法として、両者の融着性を改
善するため、従来、鉄系金属に低融点アルミニウム合金
を付着させたものを鋳型内にセットし、鋳包み金属溶湯
の熱で溶着させるアルフィン法やアルメルト法、或いは
、アルミニウム合金を浸漬付着した後に鋳包むアルフィ
ン法等が考えられている。しかしながら、前記のアルフ
ィン法或いはアルメルト法においては、アルコバックし
たものをそのまま鋳包んだとしても、鋳包み溶湯金属の
熱容量が不足し、或いは酸化皮膜を生じて充分な融着が
得られないものである。他方、アルフィン法では、鋳包
み金属溶湯の注湯を、付着させたアルミニウム合金の凝
固以前に行なわなければならないという作業上の制約が
あシ、作業性が悪いという欠点がある。In recent years, in cylinder blocks of internal combustion engines, in order to meet the demands for high heat resistance, wear resistance, and weight reduction, parts that require wear resistance, such as liners, are made of cast iron or steel materials. The cylinder body that surrounds the liner is cast in aluminum alloy, which is lightweight and has good heat conductivity. As described above, conventional methods for casting ferrous metals with aluminum alloys involve placing low melting point aluminum alloys on ferrous metals in a mold in order to improve the fusion properties between the two. The Alfin method and Alumelt method, in which the metal is welded using the heat of molten metal, and the Alfin method, in which the aluminum alloy is immersed and then cast, have been considered. However, in the above-mentioned Alphine method or Alumelt method, even if the Alcovaced material is cast as is, the heat capacity of the cast-in molten metal is insufficient, or an oxide film is formed, making it impossible to obtain sufficient fusion. be. On the other hand, the Alphine method has the disadvantage of poor workability, as there is a work restriction in that the cast-in molten metal must be poured before the deposited aluminum alloy solidifies.
このような問題を解決する方法として、本発明の発明者
らは、先に付着したアルミニウム合金の反対側に、予熱
用の金属溶湯を鋳込み、この状態で本注湯を行なう方法
を提案したが、ただ、この提案は、鉄系金属の表面に、
電気メッキによってアルミニウム合金を付着させるもの
であって、この場合には、鋳包み前に、メッキ液によっ
て生ずるガス成分の除去過程を必要とし、その分だけ作
業が複雑になる欠点があった。本発明は、このような先
の提案をよシ改善し、作業性を良好としたものであって
、このような目的を達成するため本発明では、鉄系金属
の一方の側に、低融点アルミニウム合金を被覆させて鋳
型内にセットし、その他方の側に金属溶湯を鋳込んで、
前記低融点アルミニウム合金を半溶融或いは溶融状態に
し、この状態で、前記一方の側に、鋳包み金属溶湯を注
湯することを特徴とするものである。As a method to solve such problems, the inventors of the present invention proposed a method in which molten metal for preheating is poured on the opposite side of the previously deposited aluminum alloy, and main pouring is performed in this state. However, this proposal is based on the surface of ferrous metals.
The aluminum alloy is deposited by electroplating, and in this case, a process of removing gas components generated by the plating solution is required before casting, which has the disadvantage of complicating the work accordingly. The present invention has improved the above-mentioned previous proposal and has improved workability. Cover the aluminum alloy and set it in the mold, and pour the molten metal into the other side.
The method is characterized in that the low melting point aluminum alloy is brought into a semi-molten or molten state, and in this state, molten cast-in metal is poured into the one side.
すなわち、本発明の構成をよシ詳しく説明すると、まず
、鋳鉄又は鋼製部品からなる鉄系金属の鋳包み側の表面
に、低融点アルミニウム合金を被覆するものであシ、こ
の被覆方法としては、例えば、７００ｏＣ〜８００°Ｃ
で溶解した低融点アルミニウム合金の溶湯中に、鉄系金
属を約３分間浸漬する被覆を薄くするため高い方が好ま
しい。That is, to explain the structure of the present invention in more detail, first, the cast-in side surface of a ferrous metal made of cast iron or steel parts is coated with a low melting point aluminum alloy. , e.g. 700oC to 800°C
A higher value is preferable in order to thin the coating in which the iron-based metal is immersed for about 3 minutes in a molten metal of a low melting point aluminum alloy.
このように、低融点アルミニウム合金を被覆させた鉄系
素材を、次に、鋳型内にセットして鋳包みを行なうが、
本発明では、その前に、この鋳包み側と反対の側に予熱
溶湯金属を鋳込み、付着させた低融点アルミニウム合金
が半溶融又は溶融状態になった時点で、アルミニウム合
金の鋳包み金属溶湯を注湯するものである。この鋳包み
溶湯の注湯開始時期は、予め温度針によって、測定する
ことによって決めることができる。In this way, the iron-based material coated with a low-melting point aluminum alloy is then placed in a mold and cast-in is performed.
In the present invention, before that, preheated molten metal is poured into the side opposite to the cast-in side, and when the attached low melting point aluminum alloy becomes semi-molten or molten, the molten aluminum alloy cast-in metal is poured into the cast-in side. It is for pouring hot water. The timing to start pouring the cast-in molten metal can be determined in advance by measuring with a temperature needle.
第１図は、シリンダライナを鋳包んだ場合の鋳包み方法
を示しておシ、予め、その外表面に、低融点アルミニウ
ム合金の被覆層（１）を形成したシリンダライナ（２）
を、鋳型（３）内にセットするとともに、このシリンダ
ライナ（２）の内側に予熱溶湯用の注湯室（４）を、そ
の外側に、鋳包み金属溶湯の注湯室（５）を形成し、予
熱溶湯用の湯口（４ａ）よシ予熱溶湯を鋳込んで、シリ
ンダライナ（２）の内側より予熱させ、しかる後、鋳包
み金属溶湯用の湯口（５ａ）よシ本注湯を行なうもので
ある。Figure 1 shows a method of casting in a cylinder liner.The cylinder liner (2) has a coating layer (1) of a low melting point aluminum alloy formed on its outer surface in advance.
is set in the mold (3), and a pouring chamber (4) for preheating the molten metal is formed inside the cylinder liner (2), and a pouring chamber (5) for pouring the cast-in molten metal is formed outside the cylinder liner (2). Then, pour the preheated molten metal through the sprue (4a) for preheated molten metal, preheat it from the inside of the cylinder liner (2), and then pour it through the sprue (5a) for cast-in molten metal. It is something.
次に、上記の方法で行なった実施例を説明すると、まず
、シリンダライナとして第１表にその化学成分を示す含
燐鋳鉄を使用し、これを温度７５０゜Ｃの低融点アルミ
ニウム合金溶湯へ約３分間浸漬して、その外表面を被覆
した後、ＡＣ４Ｃ相轟の予熱溶湯を用いた第１図の本発
明方法と、このような予熱溶湯を有しない従来法の両方
法で鋳造した。Next, to explain an example carried out using the above method, first, phosphorous cast iron whose chemical composition is shown in Table 1 was used as a cylinder liner, and it was poured into a molten aluminum alloy with a low melting point at a temperature of 750°C. After being immersed for 3 minutes to coat its outer surface, it was cast by both the method of the present invention shown in FIG. 1 using a preheated molten metal of AC4C phase and the conventional method without such a preheated molten metal.
このときの予熱溶湯温度は７７０°Ｃ１鋳包みアルミニ
ウム合金溶湯温度は両方法とも７５０°Ｃであった。The temperature of the preheated molten metal at this time was 770°C. The temperature of the cast-in aluminum alloy molten metal was 750°C in both methods.
第１表 （チ）
このようにして得られた各部材の融着部組織を示したも
のが第２図であって、この第２図において、下半部の黒
い部分がシリンダライナ、上半部の白い部分が鋳包みア
ルミニウム合金、両者の中間にあるやや目の細かい部分
が低融点アルミニウムの被覆層を示し、この図で解るよ
うに、予熱溶湯を有しない従来法では、低融点アルミニ
ウム層と鋳包みアルミニウム合金との間に、線上の酸化
皮膜を生じて、完全な融着が表されていないのに対し、
本発明方法では、このような酸化皮膜がなく完全な融着
に達していることが解る。本発明方法において、シリン
ダライナの内側に予熱溶湯を鋳込んだ時のライチ温度を
、第１図の■〜■各部で測定した場合の変化を示したも
のが第３図であって、鋳造法上の問題からライナ上下方
向に温度差を生じているが、最底でも４２０°Ｃには達
している。この場合、ライナ内側の予熱容量を増し、鋳
造のやシ方を改善すれば、さらに温度上昇を期待できる
と考えられる。Table 1 (H) Figure 2 shows the structure of the fused parts of each member thus obtained. In this Figure, the black part in the lower half is the cylinder liner, and the black part in the upper half is The white part shows the cast-in aluminum alloy, and the slightly finer part between the two shows the low melting point aluminum coating layer. A linear oxide film was formed between the aluminum alloy and the cast-in aluminum alloy, and complete fusion was not observed.
It can be seen that the method of the present invention achieves complete fusion without such an oxide film. In the method of the present invention, the temperature of litchi when preheated molten metal is poured into the inside of the cylinder liner is measured at each part of FIG. Due to the above problem, there is a temperature difference between the top and bottom of the liner, which reaches 420°C at the bottom. In this case, it is thought that if the preheating capacity inside the liner is increased and the casting speed is improved, further temperature increases can be expected.
以上説明したように、本発明によれば、予め鉄系金属の
鋳包み側と反対側へ予熱溶湯を鋳込んで予熱し、被覆金
属を半溶融あるいは溶融状態とする為、熱容量不足によ
って、融着が不充分となることがなく、かつ、被覆金属
の表面に酸化皮膜があったとしても、融着が完全で強固
な複合部材を得ることができるものである。また、本発
明では、アルミニウム合金が凝固した後でも、このよう
な予熱によって半溶融又は溶融状態にされるから、被覆
後の時間的制約がなく作業性が良好であると共に、電気
メッキによって付着させる場合と異なって、メッキ後の
脱ガス処理を行なう必要がない等、作業工程が簡略化さ
れる効果がある。As explained above, according to the present invention, preheated molten metal is cast in advance on the side opposite to the cast-in side of the ferrous metal and preheated to bring the coating metal into a semi-molten or molten state. This method does not cause insufficient adhesion, and even if there is an oxide film on the surface of the coated metal, it is possible to obtain a strong composite member with complete fusion. In addition, in the present invention, even after the aluminum alloy has solidified, it is brought into a semi-molten or molten state by such preheating, so there is no time restriction after coating and workability is good, and it can be attached by electroplating. Unlike the conventional method, there is no need to perform degassing treatment after plating, which simplifies the work process.
第１図は、本発明の鋳造法を示す鋳型の縦断面図、第２
図（Ａ）（Ｂ）は、夫々本発明と従来法によって得られ
た融着部の顕微鏡写真、第３図は、本発明において、予
熱溶湯を鋳込んだ時のシリンダライチ各部の温度変化を
示すグラフである。
（１） 、、、被覆層、 ＜２） 、、、シリンダライ
チ（鉄系金属）０特許出願人 ヤンマーディーゼ
ル株式会社代理人弁理士 樽 本 久
幸第１図
ａ
第３図
／ ２Ｊ ４．ｆ
”Ｊ ｆｌｒｌ（＃Ｌｉｎ）
手続補正書（方式）
％式％
３、 補正をする者
事件との関係 特許出願人FIG. 1 is a vertical cross-sectional view of a mold showing the casting method of the present invention, and FIG.
Figures (A) and (B) are micrographs of the fused parts obtained by the present invention and the conventional method, respectively. Figure 3 shows the temperature changes in each part of the cylinder litchi when preheated molten metal is poured in the present invention. This is a graph showing. (1) ,,,Coating layer, <2) ,,,Cylinder lychee (ferrous metal) 0 Patent applicant Hisashi Tarumoto, Yanmar Diesel Co., Ltd. agent patent attorney
Figure 1a Figure 3/2J 4. f ”J flrl (#Lin) Procedural amendment (method) % formula % 3. Person making the amendment Relationship with the case Patent applicant
Claims (1)
させて鋳型内にセットし、その他方の側に金属溶湯を鋳
込んで、前記低融点アルミニウム合金を半溶融或いは溶
融状態にし、この状態で、前記一方の側に鋳包み金属溶
湯を注湯することを特徴とする複合部材の鋳造法One side of a ferrous metal is coated with a low melting point aluminum alloy and set in a mold, and molten metal is poured into the other side to bring the low melting point aluminum alloy into a semi-molten or molten state. A method for casting a composite member, characterized in that a cast-in molten metal is poured into the one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21109481A JPS58112649A (en) | 1981-12-28 | 1981-12-28 | Casting method for composite member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21109481A JPS58112649A (en) | 1981-12-28 | 1981-12-28 | Casting method for composite member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58112649A true JPS58112649A (en) | 1983-07-05 |
Family
ID=16600308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21109481A Pending JPS58112649A (en) | 1981-12-28 | 1981-12-28 | Casting method for composite member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58112649A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01317680A (en) * | 1988-06-15 | 1989-12-22 | Toshiba Mach Co Ltd | Production of zinc alloy and compounded zinc alloy |
| US5121786A (en) * | 1984-11-09 | 1992-06-16 | Honda Giken Kogyo Kabushiki Kaisha | Process for manufacturing siamese-type cylinder block |
| US5320158A (en) * | 1993-01-15 | 1994-06-14 | Ford Motor Company | Method for manufacturing engine block having recessed cylinder bore liners |
| US5365997A (en) * | 1992-11-06 | 1994-11-22 | Ford Motor Company | Method for preparing an engine block casting having cylinder bore liners |
| US5983975A (en) * | 1991-03-05 | 1999-11-16 | Ab Volvo | Method of die casting |
| DE112005002155B4 (en) * | 2004-09-09 | 2008-11-27 | General Motors Corp., Detroit | Cylinder bore bushings for cast engine cylinder blocks |
| CN106552926A (en) * | 2015-09-25 | 2017-04-05 | 福特汽车公司 | The heat control method of insert casting component in the fabrication process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS501922A (en) * | 1973-05-10 | 1975-01-10 | ||
| JPS5358926A (en) * | 1976-11-09 | 1978-05-27 | Nippon Casting Co Ltd | Method of depositing different metal |
-
1981
- 1981-12-28 JP JP21109481A patent/JPS58112649A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS501922A (en) * | 1973-05-10 | 1975-01-10 | ||
| JPS5358926A (en) * | 1976-11-09 | 1978-05-27 | Nippon Casting Co Ltd | Method of depositing different metal |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5121786A (en) * | 1984-11-09 | 1992-06-16 | Honda Giken Kogyo Kabushiki Kaisha | Process for manufacturing siamese-type cylinder block |
| JPH01317680A (en) * | 1988-06-15 | 1989-12-22 | Toshiba Mach Co Ltd | Production of zinc alloy and compounded zinc alloy |
| US5983975A (en) * | 1991-03-05 | 1999-11-16 | Ab Volvo | Method of die casting |
| US5365997A (en) * | 1992-11-06 | 1994-11-22 | Ford Motor Company | Method for preparing an engine block casting having cylinder bore liners |
| US5771955A (en) * | 1992-11-06 | 1998-06-30 | Ford Global Technologies, Inc. | Core assembly manufacturing apparatus of casting engine blocks and method for making the assembly |
| US5320158A (en) * | 1993-01-15 | 1994-06-14 | Ford Motor Company | Method for manufacturing engine block having recessed cylinder bore liners |
| DE112005002155B4 (en) * | 2004-09-09 | 2008-11-27 | General Motors Corp., Detroit | Cylinder bore bushings for cast engine cylinder blocks |
| CN106552926A (en) * | 2015-09-25 | 2017-04-05 | 福特汽车公司 | The heat control method of insert casting component in the fabrication process |
| US10363601B2 (en) | 2015-09-25 | 2019-07-30 | Ford Motor Company | Method for thermal control of cast-in components during manufacturing |
| CN106552926B (en) * | 2015-09-25 | 2021-06-22 | 福特汽车公司 | Method for thermally controlling an insert component during manufacturing |
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