JPH0256992B2 - - Google Patents
Info
- Publication number
- JPH0256992B2 JPH0256992B2 JP58017319A JP1731983A JPH0256992B2 JP H0256992 B2 JPH0256992 B2 JP H0256992B2 JP 58017319 A JP58017319 A JP 58017319A JP 1731983 A JP1731983 A JP 1731983A JP H0256992 B2 JPH0256992 B2 JP H0256992B2
- Authority
- JP
- Japan
- Prior art keywords
- copper pipe
- electrode
- steel plate
- preheating
- arc
- 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 - Lifetime
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 21
- 229910052802 copper Inorganic materials 0.000 claims description 21
- 239000010949 copper Substances 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 239000000945 filler Substances 0.000 claims description 12
- 238000005304 joining Methods 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000005219 brazing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は比較的薄い板厚の鋼板に銅パイプを貫
通して接合する方法に係るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method of penetrating and joining a copper pipe to a relatively thin steel plate.
従来から薄鋼板と貫通銅パイプの接合法は例え
ば第１図に示すように、鋼板１に銅パイプ２を挿
入し、その後ろう付が施工されているが、ろう付
施工後フラツクス等の除去のために酸洗い等の追
加の工程を必要としていた。
Conventionally, the method of joining a thin steel plate and a through-hole copper pipe is to insert a copper pipe 2 into a steel plate 1 and then perform brazing, as shown in Fig. 1, for example. Therefore, additional steps such as pickling were required.
またろう材として銀ろうを使用する場合には、
ろう材に含まれる銀が高価で、かつその価格が不
安定であるという欠点があつた。 Also, when using silver solder as a brazing material,
The drawback was that the silver contained in the brazing filler metal was expensive and its price was unstable.
また、第２図に示すように電極３の先端を鋼板
１からほぼ45゜の角度をもつてすみ肉部のルート
に向けてアークを発生させて、そのアーク中にフ
イラーワイヤ４を送給してすみ肉部を形成させる
方法もある。しかし銅パイプ２と鋼板１のすみ肉
部においては、母材の熱伝導率の差によつてアー
ク熱による温度上昇に差異が生ずる。すなわち銅
パイプ側に与えられた熱量は鋼板側に与えられた
熱量にくらべてより早く伝導し拡散する。したが
つて銅パイプ側のぬれ性が悪くなるという欠点を
有している。また入熱量を増大させて銅パイプ側
のぬれ性の改善をはかると鋼板側が入熱過多にな
り良好な形状のすみ部が得られない。 Further, as shown in Fig. 2, an arc is generated with the tip of the electrode 3 at an angle of approximately 45° from the steel plate 1 toward the root of the fillet, and the filler wire 4 is fed into the arc. There is also a method of forming a fillet part. However, in the fillet portions of the copper pipe 2 and the steel plate 1, a difference in temperature rise due to arc heat occurs due to the difference in thermal conductivity of the base materials. That is, the amount of heat given to the copper pipe side is conducted and diffused more quickly than the amount of heat given to the steel plate side. Therefore, it has the disadvantage that the wettability of the copper pipe side becomes poor. Furthermore, if an attempt is made to improve the wettability on the copper pipe side by increasing the amount of heat input, too much heat will be input on the steel plate side, making it impossible to obtain a well-shaped corner.
本発明の目的は銅パイプ及び鋼板の接合面の温
度上昇をパランスさせて銅パイプのぬれ性を改善
して良好なすみ肉接合部を得る接合法を提供する
ことにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a joining method that improves the wettability of copper pipes by balancing the temperature rise of the joining surfaces of copper pipes and steel plates, thereby obtaining a good fillet joint.
本発明は接合面の接合性を向上させるために、
接合工程として、不活性ガス雰囲気中のアーク熱
で接合面を予熱し接合面の接合性を向上させるた
めの工程を初期に設け、次いでフイラーワイヤを
送給して電極３を接合部に対応させるように回転
させてすみ肉部を形成する工程を続けるものであ
る。すなわち本発明は、不活性ガス雰囲気中の非
消耗性電極によるアークを接合部の銅パイプの周
辺を少なくとも一周以上回転させて予熱処理し、
次にこの予熱処理に用いた電極のねらい位置をず
らして、フイラーワイヤを送給しながら同電極に
より接合することを特徴とする。
In order to improve the bondability of the bonding surface, the present invention has the following features:
As a bonding process, a step is initially provided to preheat the bonding surfaces with arc heat in an inert gas atmosphere to improve the bondability of the bonding surfaces, and then a filler wire is fed to align the electrode 3 with the bonding part. The process of forming the fillet part is continued by rotating it in this manner. That is, the present invention performs preheating treatment by rotating an arc using a non-consumable electrode in an inert gas atmosphere at least once around the copper pipe at the joint,
Next, the target position of the electrode used for this preheating treatment is shifted, and the filler wire is fed while bonding is performed using the same electrode.
初段の予熱処理で電極のねらい位置を移動させ
て銅パイプ側により多くのアーク熱を集中させて
母材の温度上昇をバランスさせ、次の工程で電極
位置を元に戻してすみ肉部にフイラーワイヤを送
給すれば良好な接合部が得られる。 In the first stage preheating process, the target position of the electrode is moved to concentrate more arc heat on the copper pipe side to balance the temperature rise of the base material, and in the next process the electrode position is returned to the original position and filler is applied to the fillet part. A good joint can be obtained by feeding the wire.
尚、予熱処理とフイラーワイヤ送給工程を分離
することにより予熱に適切な電流値及びすみ肉部
の形成に適切な電流値を選ぶことが好ましい。 Incidentally, it is preferable to separate the preheating treatment and the filler wire feeding process to select an appropriate current value for preheating and an appropriate current value for forming the fillet portion.
次に本発明の一実施例を第３図及び第４図によ
り説明する。第３図は、鋼板１に銅パイプ２を貫
通した貫通継手において、非消耗性電極３の位置
が鋼板１からほぼ45゜の角度ですみ肉部のルート
をねらつた場合（実線）と、わずかに銅パイプ２
に沿つて上方に移動させた場合（破線）の状態を
示す。そして前述の予熱工程において電極３を若
干上方にずらせた位置（破線の位置）で一周以上
回転させて予熱を行い、接合面のぬれ性の改善と
熱的バランスの均一化をはかり、次の工程で電極
３を元の位置（実線の位置）に戻しフイラーワイ
ヤ４を送給してパイプ側と鋼板側の両方に接合面
を有する良好なすみ肉部を形成させる。
Next, one embodiment of the present invention will be described with reference to FIGS. 3 and 4. Figure 3 shows a penetration joint in which a copper pipe 2 passes through a steel plate 1, and when the position of the non-consumable electrode 3 is aimed at the root of the fillet at an angle of approximately 45° from the steel plate 1 (solid line), and when the position of the non-consumable electrode 3 is slightly Copper pipe 2
The state when moved upward along (dashed line) is shown. Then, in the preheating step mentioned above, the electrode 3 is rotated for more than one revolution at a position slightly shifted upward (the position indicated by the broken line) to preheat it, to improve the wettability of the bonding surface and to equalize the thermal balance, and then to proceed to the next step. Then, the electrode 3 is returned to its original position (the position indicated by the solid line), and the filler wire 4 is fed to form a good fillet portion having joint surfaces on both the pipe side and the steel plate side.
第４図は、これをアーク電流一時間線図で示し
たものである。アークスタート時刻t0からt1まで
の比較的短かい時間に所定のアーク電流IAに達
し、予熱に必要な時間tAを経過後、時刻t2からt3
の短かい間に電流IAから必要ならIBに変えてフイ
ラーワイヤ送給工程にはいり、所定時間tB経過
後、時刻t4からクレータ処理にはいり、最終のク
レータ電流ICに到達して接合が完了する。予熱時
間tAは電極２が少なくともパイプ円周を一回転す
る時間以上に保ち、次の一周でフイラーワイヤ４
を送給してすみ肉部を形成し、最後にクレータ処
理を行う方法が良い。 FIG. 4 shows this as an hourly arc current diagram. The predetermined arc current I A is reached in a relatively short time from arc start time t 0 to t 1 , and after the time t A required for preheating has elapsed, from time t 2 to t 3
If necessary, the current I A is changed to I B during a short period of time, and the filler wire feeding process is started. After a predetermined time t B has elapsed, crater processing is started from time t 4 , and the final crater current I C is reached. The joining is completed. The preheating time tA is kept longer than the time required for the electrode 2 to make at least one rotation around the circumference of the pipe, and the filler wire 4 is heated in the next rotation.
A good method is to feed the material to form the fillet, and then perform crater treatment at the end.
なお、前記電流IAとIBとは、鋼板１と銅パイプ
２の板厚などによつて左右される値であるから、
第４図に示されるように、必らずしもIA＞IBにす
る必要はなく、IA≦IBにする必要がある場合もあ
る。 Note that the currents I A and I B are values that depend on the thickness of the steel plate 1 and the copper pipe 2, etc.
As shown in FIG. 4, it is not always necessary to satisfy I A > I B , and there are cases where it is necessary to satisfy I A ≦I B.
以上説明したように、本発明によれば、不活性
ガス雰囲気中におけるアーク熱による予熱工程に
よつて銅パイプ側のぬれ性を向上させることがで
きので銅パイプ側の接合性が良くなり、さらに電
極位置を予熱時とフイラー送給時とにおいて変化
させることによつて熱的バランスを改善すること
ができ、このために美麗でかつ良好なすみ肉形状
を有する接合部が形成されるという効果が得られ
る。
As explained above, according to the present invention, the wettability of the copper pipe side can be improved by the preheating process using arc heat in an inert gas atmosphere, so the bondability of the copper pipe side is improved, and Thermal balance can be improved by changing the electrode position during preheating and when feeding the filler, and this has the effect of forming a joint with a beautiful and good fillet shape. can get.
尚、本発明においては予熱用の電極（トーチ）
と溶接用の電極（トーチ）とが兼用しているの
で、トーチ回りが小型でかつシンプルとなり、小
物部品の製造も可能となる。 In addition, in the present invention, the preheating electrode (torch)
Since the welding electrode (torch) also serves as a welding electrode, the torch area is small and simple, making it possible to manufacture small parts.
第１図は従来法ろう付による鋼板と貫通銅パイ
プの接合状態を示す断面図、第２図は従来法の
TIG溶接トーチを用いる方法を示す図、第３図は
電極を移動させる場合の本発明の一実施例を示す
図、第４図は本発明の電流−時間パターンの一実
施例を示す図である。
１…鋼板、２…銅パイプ、３…電極、４…フイ
ラーワイヤ。
Figure 1 is a cross-sectional view showing how a steel plate and penetrating copper pipe are joined by conventional brazing.
A diagram showing a method using a TIG welding torch, FIG. 3 is a diagram showing an embodiment of the present invention in which the electrode is moved, and FIG. 4 is a diagram showing an embodiment of the current-time pattern of the present invention. . 1... Steel plate, 2... Copper pipe, 3... Electrode, 4... Filler wire.
Claims (1)
手の接合法において、不活性ガス雰囲気中の非消
耗性電極によるアークを接合部の銅パイプの周辺
を少なくとも一周以上回転させて予熱処理し、次
に該予熱処理に用いた電極のねらい位置をずらし
て、フイラーワイヤを送給しながら同電極により
接合することを特徴とする鋼板と貫通銅パイプの
接合法。1. In the joining method of a through joint in which a copper pipe is inserted into a hole provided in a steel plate, an arc from a non-consumable electrode in an inert gas atmosphere is rotated at least once around the copper pipe at the joint part for preheating treatment, Next, a method for joining a steel plate and a through-hole copper pipe, characterized in that the target position of the electrode used for the preheating treatment is shifted and the electrodes are used to join while feeding a filler wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1731983A JPS59144582A (en) | 1983-02-07 | 1983-02-07 | Joining method of steel plate and penetrated copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1731983A JPS59144582A (en) | 1983-02-07 | 1983-02-07 | Joining method of steel plate and penetrated copper pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59144582A JPS59144582A (en) | 1984-08-18 |
| JPH0256992B2 true JPH0256992B2 (en) | 1990-12-03 |
Family
ID=11940700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1731983A Granted JPS59144582A (en) | 1983-02-07 | 1983-02-07 | Joining method of steel plate and penetrated copper pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59144582A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011117933A (en) * | 2009-11-02 | 2011-06-16 | Kenichi Matsunaga | Earthquake prediction device |
| CN106736189B (en) * | 2017-02-20 | 2018-06-29 | 中核(天津)科技发展有限公司 | Automatic leveling and pressing device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57149068A (en) * | 1981-03-12 | 1982-09-14 | Mitsubishi Heavy Ind Ltd | Mig welding method |
-
1983
- 1983-02-07 JP JP1731983A patent/JPS59144582A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57149068A (en) * | 1981-03-12 | 1982-09-14 | Mitsubishi Heavy Ind Ltd | Mig welding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59144582A (en) | 1984-08-18 |
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