JPS5841951B2 - Butt current heating pressure welding method of stainless steel and copper materials - Google Patents
Butt current heating pressure welding method of stainless steel and copper materialsInfo
- Publication number
- JPS5841951B2 JPS5841951B2 JP10449080A JP10449080A JPS5841951B2 JP S5841951 B2 JPS5841951 B2 JP S5841951B2 JP 10449080 A JP10449080 A JP 10449080A JP 10449080 A JP10449080 A JP 10449080A JP S5841951 B2 JPS5841951 B2 JP S5841951B2
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- pressure welding
- butt
- welding method
- steel material
- 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
Links
Landscapes
- Arc Welding In General (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Description
【発明の詳細な説明】
本発明はステンレス鋼材と鋼材の突合せ通電加熱圧接法
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of welding stainless steel materials and steel materials by heating and pressurizing the butt.
ステンレス鋼材の鋼材とはその電気抵抗が著しく異なり
、通電加熱時の融点到達に大巾な時間差が生ずることか
ら、突合せ端面の同時溶融を必要とする通電加熱圧接の
適用は困難とされている。Stainless steel material has a significantly different electrical resistance from steel material, and there is a large time difference in reaching the melting point during electrical heating, making it difficult to apply electrical heating pressure welding, which requires simultaneous melting of the butt end faces.
即ち、突合せ通電加熱圧接は第１図に示すように圧接母
材１，２の各々を銅チャック３，４でクランプして、そ
の端面な互いに突合せ、通電加熱により両母材１，２の
突合せ端部を溶融させて、突合せ方向に加圧し圧接を得
るものであるが、上記のように圧接母材が鋼材とステン
レス鋼材の場合には１．その電気抵抗差が犬であること
から、高抵抗のステンレス鋼材が融点に達しても、低抵
抗の鋼材は融点に達せず、鋼材の溶融を待つとステンレ
ス鋼材は過溶融となって健全なる突合せ圧接は不可能と
なる。That is, as shown in FIG. 1, the butt welding is performed by clamping the pressure welding base materials 1 and 2 with copper chucks 3 and 4, and abutting their end surfaces against each other, and then abutting the base materials 1 and 2 by energization heating. Pressure welding is achieved by melting the ends and applying pressure in the abutting direction, but as mentioned above, when the press welding base materials are steel and stainless steel, 1. Since the difference in electrical resistance is small, even if the high-resistance stainless steel material reaches its melting point, the low-resistance steel material will not reach its melting point, and if you wait for the steel material to melt, the stainless steel material will over-melt and a healthy butt will occur. Pressure welding becomes impossible.
而して、本発明はこれらの問題点を解消してステンレス
鋼材と鋼材との突合せ通電加熱圧接法の適用による接合
を可能にしたことを特徴とするもので、殊にステンレス
棒と銅棒の接合に好適に実施される。The present invention is characterized by solving these problems and making it possible to join stainless steel materials and steel materials by applying an electric heating pressure welding method. Suitable for bonding.
即ち、本発明は鋼材の溶融遅れを補正すべく、突合せ通
電加熱圧接に先立って、これにガス炎適用による予備加
熱（熱伝導加熱）を施こし、その直後に上記両母材の突
合せ通電加熱圧接を促すことによって、その健全なる接
合を可能にしたものである。That is, in order to correct the melting delay of the steel materials, the present invention performs preliminary heating (thermal conduction heating) by applying a gas flame to the steel material prior to butt current heating pressure welding, and immediately after that, the butt current heating pressure welding of the two base materials is performed. By promoting pressure welding, healthy joining is possible.
これを図示の具体例に即して説明するならば、第２図に
示すように、先ずステンレス鋼材ＳｕＳは通常の銅チャ
ックＣｕｔ（通電用電極）でクランプし、又銅材Ｃｕを
ステンレス鋼チャックＳｕＳ’（通電用電極）でクラン
プし、画材ＳｕＳ 、Ｃｕの端面を互いに突合せて突合
せ通電加熱圧接可能な状態とする。To explain this in accordance with the illustrated example, as shown in Fig. 2, the stainless steel material SuS is first clamped with a normal copper chuck Cut (current-carrying electrode), and the copper material Cu is clamped with a stainless steel chuck. The materials are clamped with SuS' (current-carrying electrodes), and the end surfaces of the art materials SuS and Cu are abutted against each other to bring them into a state where current-carrying heat and pressure welding is possible.
次に銅材Ｃｕの突合せ端部を酸素・アセチレンガスによ
るガス炎Ｂにて予備加熱を施し、爾後の突合せ通電加熱
圧接に際しての銅材Ｃｕの溶融遅れを補正する温度に加
熱する。Next, the butt ends of the copper material Cu are preheated with gas flame B using oxygen and acetylene gas, and heated to a temperature that corrects the melting delay of the copper material Cu during the subsequent butt butt energization heat pressure welding.
この温度は通電電流値の大小、時間、圧接母材の径等の
圧接条件により選択される。This temperature is selected depending on pressure welding conditions such as the magnitude of the current value, time, and the diameter of the pressure welded base material.
上記予備加熱後直ちに命チャックＣｕ／とステンレス鋼
チャックＳｕＳ’を通じ両母材ＳｕＳ、Ｃｕを通電加熱
して、その突合せ端部の溶融を促し、引続き突合せ方向
に加圧して圧接を行なう。Immediately after the above preheating, both the base materials SuS and Cu are heated with electricity through the life chuck Cu/ and the stainless steel chuck SuS' to promote melting of the abutting ends, and then pressure is applied in the abutting direction to perform pressure welding.
以上のように、鋼材の溶融遅れを補正すべく圧接すべき
鋼材先端部にガス炎による予備加熱を施こした上で、突
合せ通電加熱を促すことにより、ステンレス鋼材ＳｕＳ
と銅材Ｃｕの電気抵抗の差異に起因する銅材Ｃｕの溶
融遅れは完全に解消され、第３図に示すようにチャック
より突出された突合せ端部の適正な溶融下で両分材Ｓｕ
Ｓ Ｃｕを健全に圧接することができる。As described above, in order to correct the melting delay of the steel materials, the stainless steel material SuS
The delay in melting of the copper material Cu due to the difference in electrical resistance between the copper material
S Cu can be pressure-welded in a sound manner.
本圧接法はガス炎による予備加熱と通電加熱圧接の組合
せによる極めて単純な圧接法であり、ガス炎による単な
る予備加熱の付加により、従来困難とされていたステン
レス鋼材ＳｕＳ と銅材Ｃｕの突合せ通電加熱圧接の実
用化を可能にした。This pressure welding method is an extremely simple pressure welding method that combines preheating with a gas flame and current heating pressure welding. By simply adding preheating with a gas flame, it is possible to butt and energize stainless steel material SuS and copper material Cu, which was previously considered difficult. This made it possible to put heat pressure welding to practical use.
第４図は斯くして得られたパリ除去後のステンレス鋼−
鋼の接合棒を示す。Figure 4 shows the stainless steel thus obtained after removing paris.
Showing a steel joint rod.
上記両分材の圧接法の実施に際し、ガス炎Ｂによる銅材
Ｃｕの予備加熱は局部（突合せ端部）に集中して行なわ
れることが望ましい。When carrying out the pressure welding method of the above-mentioned two parts, it is preferable that the preliminary heating of the copper material Cu by the gas flame B be concentrated in a local part (butt end part).
然るに銅材Ｃｕの突合せ端部のみをガス加熱しても、銅
材Ｃｕは極めて熱伝導が良好であるために予備加熱が不
必要な長さに広がったり、銅チャックに熱吸収されて加
熱に長時間を要し、銅材Ｃｕの突合せ端部な所定の予備
加熱部に加熱すべく余り長時間ガス炎に晒すと、鋼材の
熱劣化を招く恐れがある。However, even if only the butt ends of the copper material Cu are heated with gas, the copper material Cu has extremely good thermal conductivity, so it may spread to a length that does not require preheating, or the heat may be absorbed by the copper chuck and cause heating. It takes a long time, and if the steel material is exposed to the gas flame for too long in order to heat the predetermined preheated portion, which is the butt end of the copper material Cu, there is a risk of thermal deterioration of the steel material.
而して、本発明は上記実施例にて示したように、ガス炎
による銅材Ｃｕの予備加熱に際し、銅材Ｃｕをステンレ
ス鋼チャックＳｕＳ’の如き低熱伝導率の通電電極用金
属チャックでクランプさせ、上記予備加熱を施こすこと
により、該ガス炎による熱伝導熱はステンレス鋼チャッ
クＳｕＳ’のクランプ部分で吸熱されることがなく、可
及的に遮断され、ガス炎加熱を同チャック先端より突出
された突合せ端部に集中して、行なわせることができる
。As shown in the above embodiments, the present invention, when preheating the copper material Cu with a gas flame, clamps the copper material Cu with a metal chuck for current-carrying electrodes having a low thermal conductivity such as a stainless steel chuck SuS'. By performing the above preheating, the heat conducted by the gas flame is not absorbed by the clamp part of the stainless steel chuck SuS', and is blocked as much as possible, allowing the gas flame heating to be conducted from the tip of the chuck. This can be done by concentrating on the protruding butt ends.
この結果、短時間で銅材Ｃｕの突合せ端部の予備加熱を
行なうことができ、ガス炎加熱による上記悪影響を効果
的に抑制でき、加熱斑も出ない。As a result, the abutting ends of the copper material Cu can be preheated in a short time, the above-mentioned adverse effects caused by gas flame heating can be effectively suppressed, and uneven heating does not occur.
従って爾後の通電加熱圧接はチャックＣｕ’、Ｓｕｅ’
が突き合わさる母材突出部分で効果的に遂行される。Therefore, the subsequent current-heating and pressure welding is performed using chucks Cu' and Sue'.
This is effectively accomplished at the protruding portions of the base material that butt against each other.
本発明の実施によって得られたステンレス−銅接手棒は
パイプ加工して例えば原子炉内配管におけるステンレス
の日出部と銅の日出部の接手管として好適に用いられる
。The stainless steel-copper joint rod obtained by carrying out the present invention is processed into a pipe and is suitably used, for example, as a joint pipe between a stainless steel and a copper joint in piping in a nuclear reactor.
第１図は突合せ通電加熱圧接の原理を説明する突合せ部
側面図、第２図、第３図は本発明の突合せ通電加熱圧接
法を説明する突合せ部側面図、第４図は同圧接にて得ら
れたステンレス鋼−銅の接合棒側面図である。
ＳｕＳ・・・・・・ステンレス鋼材、Ｃｕ・・・・・・
銅材、ＳｕＳ’・・・・・・ステンレス鋼チャック、Ｃ
ｕ’・・・・・・銅チャック、Ｂ・・・・・・ガス炎。Fig. 1 is a side view of the butt part to explain the principle of butt energization heat pressure welding, Figs. 2 and 3 are side views of the butt part to explain the butt energization heat pressure welding method of the present invention, and Fig. 4 is the same pressure welding. FIG. 3 is a side view of the obtained stainless steel-copper joint rod. SuS... Stainless steel material, Cu...
Copper material, SuS'...Stainless steel chuck, C
u'...Copper chuck, B...Gas flame.
Claims (1)
、然る後該予備加熱鋼材とステンレス鋼材の突合せ通電
加熱圧接を促すことを特徴とするステンレス鋼材と鋼材
の突合せ通電加熱圧接法。 ２ 第１項記載の発明において、上記ガス炎による予備
加熱に際し、鋼材を低熱伝導率の通電電極用金属チャッ
クでクランプして局部加熱を促すようにしたことを特徴
とするステンレス鋼材と鋼材の突合せ通電加熱圧接法。[Scope of Claims] 1. A stainless steel material and a steel material, characterized in that the tips of the steel materials to be pressure welded are preheated with a gas flame, and then the preheated steel material and the stainless steel material are butted to promote energized heat pressure welding. Butt current heating pressure welding method. 2. In the invention described in item 1, the butt of stainless steel materials and steel materials is characterized in that during preheating with the gas flame, the steel materials are clamped with a metal chuck for current-carrying electrodes having low thermal conductivity to promote local heating. Electric heating pressure welding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10449080A JPS5841951B2 (en) | 1980-07-30 | 1980-07-30 | Butt current heating pressure welding method of stainless steel and copper materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10449080A JPS5841951B2 (en) | 1980-07-30 | 1980-07-30 | Butt current heating pressure welding method of stainless steel and copper materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5728682A JPS5728682A (en) | 1982-02-16 |
| JPS5841951B2 true JPS5841951B2 (en) | 1983-09-16 |
Family
ID=14381975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10449080A Expired JPS5841951B2 (en) | 1980-07-30 | 1980-07-30 | Butt current heating pressure welding method of stainless steel and copper materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5841951B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0503094B1 (en) * | 1990-10-03 | 1995-09-06 | Daihen Corporation | Method of electrically joining objects to be joined including ceramics |
-
1980
- 1980-07-30 JP JP10449080A patent/JPS5841951B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5728682A (en) | 1982-02-16 |
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