JP2833198B2 - Cast iron joining method - Google Patents
Cast iron joining methodInfo
- Publication number
- JP2833198B2 JP2833198B2 JP2308816A JP30881690A JP2833198B2 JP 2833198 B2 JP2833198 B2 JP 2833198B2 JP 2308816 A JP2308816 A JP 2308816A JP 30881690 A JP30881690 A JP 30881690A JP 2833198 B2 JP2833198 B2 JP 2833198B2
- Authority
- JP
- Japan
- Prior art keywords
- cast iron
- materials
- amorphous alloy
- melting point
- joining
- 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 - Fee Related
Links
Landscapes
- Pressure Welding/Diffusion-Bonding (AREA)
Description
【発明の詳細な説明】 <産業上の利用分野> 本発明は、鋳鉄材同士あるいは鋳鉄材と他の金属材料
との接合方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for joining cast iron materials or between a cast iron material and another metal material.
<従来の技術と課題> 鋳鉄材の溶接は、ほとんど巣埋めとか肉盛りとかの部
分的な鋳造欠陥の補修に利用されるだけで、構造物など
を組立てるための継手溶接は行われていない。<Prior art and problems> Welding of cast iron materials is mostly used only for repairing partial casting defects such as burrowing and overlaying, and no joint welding for assembling structures or the like is performed.
その理由は溶接性がきわめて悪いためで、通常溶接部
は硬化し、割れを発生し、またブローホールなども生
じ、信頼性が低い。The reason for this is that the weldability is extremely poor. Usually, the welded part is hardened, cracks occur, and blowholes occur, resulting in low reliability.
鋳鉄材の溶接にはCO2アーク溶接などが採用されてい
るが、被溶接物を溶融することによって接合する方法で
あるため、溶融金属の収縮変形、入熱アンバランス等に
より溶接ひずみが発生する。ひずみは修正されるが、そ
れにも限界がある。また、接合部近傍には熱影響部があ
って、品質が均一でない。さらに、余盛りも生じ、精度
が悪い。CO 2 arc welding is used for welding of cast iron materials.However, since welding is performed by melting the workpiece, welding distortion occurs due to shrinkage deformation of the molten metal, heat input imbalance, etc. . The distortion is corrected, but it has its limitations. In addition, there is a heat-affected zone near the joint, and the quality is not uniform. In addition, there is a margin and accuracy is poor.
一方、鋳鉄材についても機械的結合等ではなく、信頼
性の高い溶接あるいはそれに相当する技術により接合で
きれば生産性は向上する。On the other hand, productivity can be improved if the cast iron material can be joined not by mechanical joining or the like but by highly reliable welding or a technique corresponding thereto.
<課題を解決するための手段> 上記課題を解決するため、本発明では、鋳鉄材同士あ
るいは鋳鉄材と他の金属材とを低融点のCu系アモルファ
ス合金薄膜を介在させて突き合わせ、両材を加圧すると
共に両材の突き合わせ部を鋳鉄材の融点以下にて加熱
し、低融点のアモルファス合金を両材中に拡散させて両
材を接合するようにしたのである。<Means for Solving the Problems> In order to solve the above-mentioned problems, in the present invention, cast iron materials or a cast iron material and another metal material are butted with a low melting point Cu-based amorphous alloy thin film interposed therebetween, and the two materials are joined together. By applying pressure and heating the butted portion of the two materials below the melting point of the cast iron material, the low-melting amorphous alloy is diffused into the two materials to join the two materials.
<作用> 上記方法では、鋳鉄材をその融点以上の高温まで加熱
することがないので、鋳鉄材の硬化、割れなどは防止さ
れる。また、アモルファス合金薄膜を使用するので、拡
散時間も短くてすむ。<Operation> In the above method, the cast iron material is not heated to a high temperature higher than its melting point, so that the hardening and cracking of the cast iron material are prevented. Further, since the amorphous alloy thin film is used, the diffusion time can be shortened.
<実 施 例> 次に、本発明の一実施例として鋳鉄材同士の接合につ
いて接合する。<Embodiment> Next, as one embodiment of the present invention, joining of cast iron materials is performed.
第2図に示すように、接合すべき鋳鉄材1,2の端面同
士を間に、低融点のアモルファス合金薄膜3を介在させ
て突き合わせる。低融点のアモルファス合金薄膜3とし
ては、例えばCu系のアモルファス合金などが用いられ、
またその厚さは20μm〜40μmくらいのものが採用され
る。As shown in FIG. 2, the end faces of the cast iron materials 1 and 2 to be joined are butted with a low melting point amorphous alloy thin film 3 interposed therebetween. As the amorphous alloy thin film 3 having a low melting point, for example, a Cu-based amorphous alloy or the like is used.
Further, a thickness of about 20 μm to 40 μm is employed.
突き合わせられた鋳鉄材1,2を高周波加熱コイル4内
にセットし、高周波誘導加熱により突き合わせ部を加熱
すると共に、図示されていない加圧手段により、アモル
ファス合金薄膜3を介して両材1,2を加圧する。加熱
は、母材である鋳鉄材1,2の融点以下でなされる。The butted cast iron materials 1 and 2 are set in a high-frequency heating coil 4 to heat the butted portion by high-frequency induction heating and pressurized means (not shown) through the amorphous alloy thin film 3 through the amorphous alloy thin film 3. Press. The heating is performed at a temperature equal to or lower than the melting point of the cast iron materials 1 and 2 as the base material.
突き合わせ部の加熱により、第1図(a)(b)に示
すように、アモルファス合金薄膜3が溶融する。加圧力
が働いていることにより溶融金属3aは端面間に薄く均一
に充填される。By heating the butted portion, as shown in FIGS. 1A and 1B, the amorphous alloy thin film 3 is melted. The molten metal 3a is thinly and uniformly filled between the end faces by the application of the pressing force.
この後、温度を等温に保持すると、第1図(c)に示
すように、溶融金属3aと鋳鉄材1,2との間で相互拡散が
起こり、溶融金属3a中の融点降下元素が鋳鉄材1,2中に
拡散する。そのため、溶融金属3aの融点は次第に上昇す
るが、突き合わせ部は等温に保持されているので、溶融
金属は凝固する。Thereafter, when the temperature is maintained at an isothermal temperature, mutual diffusion occurs between the molten metal 3a and the cast iron materials 1 and 2 as shown in FIG. Spreads in 1,2. Therefore, although the melting point of the molten metal 3a gradually increases, the molten metal solidifies because the butted portion is kept at the same temperature.
この後、さらに元素の拡散が進み、最終的に接合部
は、第1図(d)に示すように凝固組織を残さない均質
な組織となる。Thereafter, the diffusion of the elements further proceeds, and finally the joint becomes a homogeneous structure without leaving a solidified structure as shown in FIG. 1 (d).
本実施例は鋳鉄材同士の接合であるが、本発明によれ
ば、鋳鉄と鋳鋼、鋼、非鉄金属材料などとの接合も可能
である。Although the present embodiment relates to joining between cast iron materials, according to the present invention, joining between cast iron and cast steel, steel, non-ferrous metal materials and the like is also possible.
<発明の効果> 本発明に係る鋳鉄材の接合方法によれば、鋳鉄材をそ
の融点以上の高温に加熱することなく接合が行えるの
で、割れやひずみなどの欠陥が生じず、余盛りもないた
め、外観精度の良い接合部が得られるので、拡散接合の
際の時間を短くすることができる。<Effect of the Invention> According to the method for joining a cast iron material according to the present invention, joining can be performed without heating the cast iron material to a high temperature higher than its melting point, so that defects such as cracks and strains do not occur and there is no excess. For this reason, a joint having good appearance accuracy can be obtained, so that the time for diffusion joining can be shortened.
第1図は鋳鉄材の拡散接合過程の説明図、第2図は拡散
接合作業状態の概略図である。 図 面 中、 1,2は鋳鉄材、 3はアモルファス合金薄膜である。FIG. 1 is an explanatory view of a diffusion bonding process of a cast iron material, and FIG. 2 is a schematic view of a diffusion bonding operation state. In the drawing, 1 and 2 are cast iron materials, and 3 is an amorphous alloy thin film.
Claims (1)
を低融点のCu系アモルファス合金薄膜を介在させて突き
合わせ、両材を加圧すると共に両材の突き合わせ部を鋳
鉄材の融点以下にて加熱し、低融点のアモルファス合金
を両材中に拡散させて両材を接合することを特徴とする
鋳鉄材の接合方法。1. A cast iron material or a cast iron material and another metal material are butted together with a low melting point Cu-based amorphous alloy thin film interposed therebetween. And joining the two materials by heating and diffusing the low melting point amorphous alloy into the two materials.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2308816A JP2833198B2 (en) | 1990-11-16 | 1990-11-16 | Cast iron joining method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2308816A JP2833198B2 (en) | 1990-11-16 | 1990-11-16 | Cast iron joining method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04182079A JPH04182079A (en) | 1992-06-29 |
JP2833198B2 true JP2833198B2 (en) | 1998-12-09 |
Family
ID=17985659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2308816A Expired - Fee Related JP2833198B2 (en) | 1990-11-16 | 1990-11-16 | Cast iron joining method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2833198B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5570133B2 (en) * | 2009-03-24 | 2014-08-13 | 日新製鋼株式会社 | Steel / copper composite material and manufacturing method thereof |
JP2017104907A (en) * | 2015-12-01 | 2017-06-15 | 日立金属株式会社 | Insert casting member, and manufacturing method of insert casting member using amorphous metal for joint material |
CN105821351B (en) * | 2016-03-23 | 2018-12-21 | 中国科学院力学研究所 | A kind of preparation method and amorphous Hollow Microspheres Reinforced Composite Materials foam of amorphous alloy |
-
1990
- 1990-11-16 JP JP2308816A patent/JP2833198B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH04182079A (en) | 1992-06-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |