JPH10263847A - Method of joining metal - Google Patents
Method of joining metalInfo
- Publication number
- JPH10263847A JPH10263847A JP10656897A JP10656897A JPH10263847A JP H10263847 A JPH10263847 A JP H10263847A JP 10656897 A JP10656897 A JP 10656897A JP 10656897 A JP10656897 A JP 10656897A JP H10263847 A JPH10263847 A JP H10263847A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- alloy
- metal alloy
- joined
- 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.)
- Pending
Links
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- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金属又は金属合金、例
えば鋼の板や片等を互いに接合する方法に関するもので
ある。さらに詳細には、フラックスやろう材を用いるこ
となく、これらの金属又は金属合金を互いに接合する方
法を提供するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining metals or metal alloys, such as steel plates and pieces, to each other. More specifically, the present invention provides a method for joining these metals or metal alloys to each other without using a flux or a brazing material.
【０００２】[0002]
【従来の技術】金属や金属合金の接合手段としては、ろ
う接合が知られており、広く用いられている。かかる方
法は、接合しようとする金属または金属合金の全部また
は一部にメッキやロール圧着法で当該金属または金属合
金の融点より低い温度で溶融して液相を生じるろう材の
金属層を先ずつける。このろう材の融点は、接合しよう
とする金属または金属合金の融点よりも低いことが必要
である。接合される金属または金属合金の母材が溶ける
ことなく、母材間に介在するろう材の金属層のみが溶融
して液相となる温度にろう材の金属層をつけた金属や金
属合金を加熱し、その後に冷却する。接合される金属や
金属合金とは異なる金属のろう材によって、当該金属や
金属合金が互いに接合されるもので、接合された金属や
金属合金の間に低融点のろう材の金属層が残ることにな
る。火炎ろう接合やハンダ接合もこのようなろう接合と
同様で、加熱されて液相となった金属の一部が毛細管現
像によって接合される固体金属の間隙に流れた後に冷却
されて固着するものである。2. Description of the Related Art As a means for joining metals and metal alloys, brazing is known and widely used. In this method, a metal layer of a brazing material that first melts at a temperature lower than the melting point of the metal or metal alloy to form a liquid phase is applied to all or a part of the metal or metal alloy to be joined by plating or roll pressing. . The melting point of the brazing material must be lower than the melting point of the metal or metal alloy to be joined. A metal or metal alloy with a brazing metal layer at a temperature at which only the brazing metal layer interposed between the base metals melts and becomes a liquid phase without melting the base material of the metal or metal alloy to be joined. Heat and then cool. The metal or metal alloy is joined to each other by a brazing metal of a metal different from the metal or metal alloy to be joined, and a low melting point brazing metal layer remains between the joined metals or metal alloys. become. Flame brazing and soldering are similar to such brazing, in which a portion of the heated liquid phase metal flows through the gaps between the solid metals joined by capillary development, then cools and solidifies. is there.
【０００３】[0003]
【発明が解決しようとする課題】そこで、本発明は今迄
のようなろう材を使うことなしに金属または金属合金を
接合しようとするものである。互いに接合される金属ま
たは金属合金の間に金属または非金属元素又はそれらの
合金を層として介在させるが、この層が熱処理後には接
合される金属または金属合金と同一の組織となって分別
できなくなることが求められる。SUMMARY OF THE INVENTION Accordingly, the present invention seeks to join metals or metal alloys without using brazing materials as in the past. A metal or non-metallic element or their alloy is interposed as a layer between the metals or metal alloys to be joined to each other, but this layer has the same structure as the metal or metal alloy to be joined after heat treatment and cannot be separated Is required.
【０００４】[0004]
【課題を解決するための手段】本発明は、ろう材なしに
金属または金属合金を接合する方法を提案するもので、
本発明の方法では、金属または金属合金の接合しようと
する部分を圧力下で対面させ、この相対する面の間に該
金属または該金属合金の溶融点以下の温度で該金属また
は該金属合金の母金属と合金をつくりうる元素を該金属
または該金属合金の量に比して極めて微量な層としてお
き、該金属または該金属合金の溶融点以下でかつ前記し
た元素が該金属または該金属合金の母金属と合金をつく
りうる温度以上の温度にこれを加熱して前記した微量な
元素の少なくとも一部が該金属または該金属合金の母金
属の一部と合金となって液相となり、固相に保たれた該
金属または該金属合金中に拡散して当該金属または金属
合金が接合されるものである。SUMMARY OF THE INVENTION The present invention proposes a method for joining metals or metal alloys without brazing material.
In the method of the present invention, a portion to be joined of a metal or a metal alloy is faced under pressure, and the metal or the metal alloy is heated at a temperature below the melting point of the metal or the metal alloy between the opposed surfaces. An element capable of forming an alloy with the parent metal is provided in an extremely small layer in comparison with the amount of the metal or the metal alloy, and the melting point of the metal or the metal alloy is lower than the melting point of the metal or the metal alloy. By heating this to a temperature not lower than the temperature at which an alloy can be formed with the base metal, at least a part of the above-mentioned trace elements is alloyed with a part of the base metal of the metal or the metal alloy to form a liquid phase, The metal or metal alloy diffuses into the metal or metal alloy held in the phase and is joined to the metal or metal alloy.
【０００５】以下の実施例に記載される鋼片どうしを接
合するために、それらの接合される界面に墨汁を塗布し
た場合の本発明の方法の作用を説明する。[0005] The operation of the method of the present invention in the case where black ink is applied to the interface to be joined in order to join the billets described in the following examples will be described.
【０００６】墨汁の炭素と鋼の母金属の鉄とは共晶合金
をつくり、その共晶温度は１１５３℃で、使用した低炭
素鋼の融点（約１５００℃）ならびに鉄の融点よりも低
い。そこで、接合される界面に墨汁が塗布されて対面す
る一対の鋼片を上記した共晶温度よりも高い温度、例え
ば１１５５℃に加熱すると鋼片は溶融しないが、鋼片の
表面の鉄と接触する炭素が鉄の結晶格子に干渉して鉄と
炭素の共晶合金をつくり、液相となって鋼の固相の鉄の
結晶中に急速に移動し、拡散する。このとき、墨汁の炭
素の全部を液相とすることは必要ではなく、その一部又
はその多くを上記したように高温域で鉄と固体間反応さ
せ、これを上記したような墨汁の一部で微細に生じた界
面の合金液相に誘導させて固相の母材中に拡散、接合し
てもよい。[0006] The carbon of ink and the iron of the steel base metal form a eutectic alloy, which has a eutectic temperature of 1153 ° C, which is lower than the melting point of the low-carbon steel used (about 1500 ° C) and the melting point of iron. Therefore, when ink is applied to the interface to be joined and a pair of steel slabs facing each other are heated to a temperature higher than the above eutectic temperature, for example, 1155 ° C., the steel slab does not melt, but comes into contact with iron on the surface of the steel slab. The interfering carbon interferes with the iron crystal lattice to form an eutectic alloy of iron and carbon, which rapidly becomes a liquid phase and moves and diffuses into the iron crystal in the steel solid phase. At this time, it is not necessary to convert all of the carbon in the ink into a liquid phase, and a part or a large portion of the carbon is reacted between iron and a solid in a high-temperature region as described above, and this is partially converted into a part of the ink as described above. Alternatively, it may be guided to the alloy liquid phase at the interface finely generated by the above and diffused and joined into the solid phase base material.
【０００７】実施例で使用された鋼は円柱状の片で、実
質的な質量を有するものであるが、鋼が実質的な質量を
もたない、例えば箔のような鋼の接合の場合には、高温
で炭素に触れたときに箔に穴があいてしまう虞れがある
ので、本発明の方法はこのような場合にはなじまない。[0007] The steel used in the examples is a cylindrical piece having a substantial mass, but the steel has no substantial mass, for example in the case of joining steels such as foils. However, the method of the present invention is not suitable for such a case, since there is a possibility that a hole is formed in the foil when carbon is touched at a high temperature.
【０００８】また、実施例では鋼を接合したが、その他
の金属または金属合金の接合にも特許請求の範囲の要件
を満たすかぎり本発明を実施できることは勿論である。
また、接合する金属の界面に実施例では墨汁（炭素）と
ニッケルを用いたが、マンガン，クロム，モリブデン，
ケイ素やそれらの合金を用いても同様な結果を得た。Further, although steel is joined in the embodiment, it goes without saying that the present invention can be implemented for joining other metals or metal alloys as long as the requirements of the claims are satisfied.
In addition, although ink (carbon) and nickel were used in the embodiment at the interface of the metal to be joined, manganese, chromium, molybdenum,
Similar results were obtained with silicon and their alloys.
【０００９】[0009]
実施例１ 平面をもって互いに接触する一対の円柱状（径３０ｍｍ
×厚さ５ｍｍ）の鋼片（ＪＩＳ低炭素鋼ＳＳ４１）の界
面に墨汁を塗布した。塗布した墨汁の量は１．５ｇ／ｍ
２であった。これを高純度の窒素を満たした雰囲気炉内
に入れて１１５５℃に加熱し５分間保持した後に常温ま
で冷却したところ、良好な接合品を得ることができた。
接合個所の顕微鏡組織（×１００）は図１の通りに接合
界面がほとんど分別し得ないようなフェライト・パーラ
イトの入り組んだものであった。Example 1 A pair of cylinders (diameter 30 mm) contacting each other with a flat surface
× 5 mm in thickness) was applied to the interface of a steel piece (JIS low carbon steel SS41). The amount of ink applied is 1.5g / m
It was 2 . This was placed in an atmosphere furnace filled with high-purity nitrogen, heated to 1155 ° C., held for 5 minutes, and then cooled to room temperature, whereby a good bonded product could be obtained.
As shown in FIG. 1, the microstructure (× 100) of the joint was intricate ferrite / pearlite such that the joint interface could hardly be separated.
【００１０】実施例２ 上記実施例１と同一の鋼片の界面に７ミクロンのニッケ
ルメッキを施して、これを重ね合わせ、接合する面に直
角の力がかかるようにセラミック製の支持具で挟持し
た。これをアルゴン雰囲気中で１３６０℃に加熱し、５
分間保持した後に常温まで冷却した。その結果、良好な
接合品を得ることができた。Embodiment 2 The same slab as in Embodiment 1 is plated with nickel of 7 μm on the interface, and these are overlapped and sandwiched by a ceramic support so that a right-angle force is applied to the surface to be joined. did. This was heated to 1360 ° C. in an argon atmosphere,
After holding the mixture for a minute, the mixture was cooled to room temperature. As a result, a good bonded product could be obtained.
【００１１】この実施例ではセラミック製の支持具を用
いたが、接合しようとする金属または金属合金よりも膨
張係数の小さい金属や炭素等によって支持具や冶具をつ
くってもよい。In this embodiment, a ceramic support is used, but a support or a jig may be made of a metal or carbon having a smaller expansion coefficient than the metal or metal alloy to be joined.
【００１２】[0012]
【発明の効果】上述の説明及び実施例から明らかな通
り、本発明の方法によれば、接合される固相の金属また
は金属合金中に液相下で拡散し、接合部の界面が接合さ
れた金属合金の組織とほとんど同様となり、接合界面と
接合された金属合金との間が分別できないような優れて
緻密な結合が得られる効果がある。As is apparent from the above description and examples, according to the method of the present invention, the alloy diffuses under the liquid phase into the solid phase metal or metal alloy to be joined, and the interface of the joint is joined. The structure is almost the same as that of the metal alloy thus obtained, and there is an effect that an excellent and dense bond can be obtained such that it is impossible to distinguish between the bonding interface and the bonded metal alloy.
【図１】接合部の結晶構造の顕微鏡写真（×１００）で
ある。FIG. 1 is a micrograph (× 100) of a crystal structure of a bonding portion.
【手続補正書】[Procedure amendment]
【提出日】平成９年５月８日[Submission date] May 8, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００８】 また、実施例では鋼を接合したが、その
他の金属または金属合金の接合にも特許請求の範囲の要
件を満たすかぎり本発明を実施できることは勿論であ
る。また、接合する金属の界面に実施例では墨汁（炭
素）とニッケル−マンガンを用いたが、ニッケル，マン
ガン，クロム，モリブデン，ケイ素やそれらの合金を用
いても同様な結果を得た。Further, although steel is joined in the embodiment, it goes without saying that the present invention can be implemented for joining other metals or metal alloys as long as the requirements of the claims are satisfied. In addition, although black ink (carbon) and nickel-manganese were used for the interface of the metals to be joined in the examples, similar results were obtained when nickel, manganese, chromium, molybdenum, silicon, or an alloy thereof was used.
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１０】 実施例２ 上記実施例１と同一の鋼片の界面に７ミクロンのニッケ
ル−マンガンメッキを施して、これを重ね合わせ、接合
する面に直角の力がかかるようにセラミック製の支持具
で挟持した。これをアルゴン雰囲気中で１１６０℃に加
熱し、５分間保持した後に常温まで冷却した。その結
果、良好な接合品を得ることができた。Example 2 A 7-micron nickel was applied to the same steel piece interface as in Example 1 above.
Ru-manganese plating was performed, and these were overlapped and sandwiched by a ceramic support so that a right angle force was applied to the surfaces to be joined. This was heated to 1160 ° C. in an argon atmosphere, kept for 5 minutes, and then cooled to room temperature. As a result, a good bonded product could be obtained.
Claims (5)
は金属合金を接合する方法にして、該金属又は該金属合
金の接合しようとする部分を圧力下で対面させ、この相
対する面の間に該金属又は該金属合金の溶融点以下の温
度で該金属又は該金属合金の母金属と合金を作り得る元
素を該金属又は該金属合金の量に比して極めて微量な層
としておき、該金属又は該金属合金の溶融点以下でかつ
上記元素が該金属又は該金属合金の母金属と合金を作り
得る温度以上の温度にこれを加熱して上記した微量な元
素の少なくとも一部が該金属又は該金属合金の母金属の
一部と合金となって液相となり、固相に保たれた該金属
又は該金属合金中に拡散して上記金属又は金属合金が接
合されるようにしたことを特徴とする金属の接合方法。1. A method for joining a metal or metal alloy such as a plate or a piece having a substantial mass, wherein a portion of the metal or metal alloy to be joined faces under pressure, and In the meantime, an element capable of forming an alloy with the base metal of the metal or the metal alloy at a temperature equal to or lower than the melting point of the metal or the metal alloy is formed as an extremely small amount of a layer relative to the amount of the metal or the metal alloy. Heating the metal or the metal alloy to a temperature below the melting point of the metal or the metal alloy and above the temperature at which the element can form an alloy with the parent metal of the metal or the metal alloy, at least a portion of the above-mentioned trace elements An alloy with a part of the base metal of the metal or the metal alloy becomes a liquid phase and diffuses into the metal or the metal alloy kept in a solid phase so that the metal or the metal alloy is joined. A method for joining metals, comprising:
した微量な層の元素の少なくとも一部は固相下で該金属
または該金属合金の母金属の一部と反応し、該金属また
は該金属合金の母金属の他の一部と前記した元素とがつ
くる液相の合金を介して前記した固相の該金属または該
金属合金中に拡散して上記した金属または金属合金が接
合される方法。2. The bonding method according to claim 1, wherein at least a part of the trace layer element reacts with a part of the metal or a base metal of the metal alloy in a solid phase to form the metal or the metal alloy. The above metal or metal alloy is joined by diffusing into the solid or the metal alloy in the solid phase through a liquid phase alloy formed by another part of the base metal of the metal alloy and the element described above. Way.
て、相対する該金属または該金属合金の接合しようとす
る部分はその相対する面にほぼ直角に働く圧力で加圧さ
れることを特徴とする上記した金属または金属合金を接
合する方法。3. The joining method according to claim 1, wherein a portion of the metal or metal alloy to be joined is pressed with a pressure acting substantially perpendicular to the opposite surface. A method of joining the above-mentioned metals or metal alloys.
うとする該金属または該金属合金よりも膨張係数の小さ
な金属または非金属元素でつくられた冶具を介して上記
の圧力が加えられる上記した金属または金属合金を接合
する方法。4. The bonding method according to claim 3, wherein the pressure is applied via a jig made of a metal or a nonmetallic element having a smaller expansion coefficient than the metal or the metal alloy to be bonded. To join a metal or metal alloy.
で、該金属が鉄であり、該金属合金が鋼であり、微量な
層をなす元素が炭素、マンガン、クロム、ニッケル、モ
リブデンまたはケイ素或はそれらの合金である上記した
金属または金属合金の接合方法。5. The method according to claim 1, wherein the metal is iron, the metal alloy is steel, and the element forming a trace layer is carbon, manganese, chromium, nickel, or molybdenum. Alternatively, a method for bonding the above-mentioned metal or metal alloy which is silicon or an alloy thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10656897A JPH10263847A (en) | 1997-03-19 | 1997-03-19 | Method of joining metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10656897A JPH10263847A (en) | 1997-03-19 | 1997-03-19 | Method of joining metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10263847A true JPH10263847A (en) | 1998-10-06 |
Family
ID=14436876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10656897A Pending JPH10263847A (en) | 1997-03-19 | 1997-03-19 | Method of joining metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10263847A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010000510A (en) * | 2008-06-18 | 2010-01-07 | Toyota Central R&D Labs Inc | Member joining method and joining material |
| WO2017094596A1 (en) * | 2015-12-03 | 2017-06-08 | 本田技研工業株式会社 | Method for bonding steel material and device for bonding steel material |
-
1997
- 1997-03-19 JP JP10656897A patent/JPH10263847A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010000510A (en) * | 2008-06-18 | 2010-01-07 | Toyota Central R&D Labs Inc | Member joining method and joining material |
| WO2017094596A1 (en) * | 2015-12-03 | 2017-06-08 | 本田技研工業株式会社 | Method for bonding steel material and device for bonding steel material |
| JPWO2017094596A1 (en) * | 2015-12-03 | 2018-06-14 | 本田技研工業株式会社 | Steel joining method and steel joining apparatus |
| US10562129B2 (en) | 2015-12-03 | 2020-02-18 | Honda Motor Co., Ltd. | Method for bonding steel material and device for bonding steel material |
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