JPH03118977A - Tungsten inert gas welding machine - Google Patents
Tungsten inert gas welding machineInfo
- Publication number
- JPH03118977A JPH03118977A JP25741889A JP25741889A JPH03118977A JP H03118977 A JPH03118977 A JP H03118977A JP 25741889 A JP25741889 A JP 25741889A JP 25741889 A JP25741889 A JP 25741889A JP H03118977 A JPH03118977 A JP H03118977A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- groove
- arc
- base
- preheating temperature
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 50
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000010937 tungsten Substances 0.000 title claims abstract description 20
- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 20
- 239000011261 inert gas Substances 0.000 title claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 13
- 239000010949 copper Substances 0.000 claims abstract description 13
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 11
- 239000010953 base metal Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 239000007789 gas Substances 0.000 abstract description 5
- 150000002739 metals Chemical class 0.000 abstract description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000677 High-carbon steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、溶接時に必要とされる銅または銅合金の予
熱温度を適正化し、以後の溶接を最適化するタングステ
ンイナートガス溶接機に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a tungsten inert gas welding machine that optimizes the preheating temperature of copper or copper alloy required during welding and optimizes subsequent welding. .
〔従来の技術Ｊ
第３図は従来のタングステンイナートガス溶接機を示す
正面図であり１図において、１は被溶接材である銅また
は銅合金の母材、２は各母材１の突合せ部の開先、３は
溶融金属の溶落ちを防止する裏当て、４は突合せ部およ
びその近傍を予熱したり、溶接したりするのに用いるタ
ングステンイナートガス溶接機のトーチ先端部、４１は
そのトーチ先端部４のノズル、４２はタングステン電極
。[Prior art J] Fig. 3 is a front view showing a conventional tungsten inert gas welding machine. 3 is a backing for preventing molten metal from burning through; 4 is the tip of a torch of a tungsten inert gas welding machine used for preheating and welding the butt part and its vicinity; 41 is the tip of the torch 4 nozzle, 42 tungsten electrode.
５は母材１を位置合せした後は、動がないように台板上
に締め付は固定する押え装置、６は裏当て３を収納する
とともに、押え装置５を取り付けている上記の台板、７
はシールドガス（アルゴン）、８はアーク、９は開先２
に溶融金属を供給する溶接棒である。5 is a presser device that tightens and fixes the base material 1 on the base plate so that it does not move after positioning, and 6 is the above-mentioned base plate that stores the backing 3 and attaches the presser device 5. ,7
is shielding gas (argon), 8 is arc, 9 is groove 2
It is a welding rod that supplies molten metal to the
次に動作について説明する。まず、銅や銅合金からなる
２つの母材１を台板６上に載せ、突合せ溶接する開先２
を図示の位置にくるように押え装置５で保持する。続い
て、タングステンイナートガス溶接機を作動させ、シー
ルドガス７を流し、アーク８を発生させる。このとき、
開先２近傍におけるアーク長を溶接時の場合より高く維
持し、かつ左右前後に揺動させて、開先２とこの開先２
近傍の母材１を予熱する。こうして、予め設定した例え
ば３００℃以上の予熱温度に達したら、溶接始端部から
アーク長を短くするような溶接電流に切替で、／８接を
開始する。この場合において、予熱温度に達したかどう
かは、サーモフレオンあるいはハンディデジタル温度計
で確認したり、ベテランの溶接工が色の具合や母材１の
表面の溶融状態などを見て、経験的に判断する。Next, the operation will be explained. First, two base materials 1 made of copper or copper alloy are placed on a base plate 6, and a groove 2 to be butt welded is formed.
is held by the holding device 5 so that it is in the position shown in the figure. Subsequently, the tungsten inert gas welding machine is operated to flow the shielding gas 7 and generate the arc 8. At this time,
The arc length near the groove 2 is maintained higher than that during welding, and it is swung back and forth to the left and right.
Preheat the nearby base material 1. In this way, when a preheating temperature of, for example, 300° C. or higher, which is set in advance, is reached, the welding current is switched to shorten the arc length from the welding start end, and /8 welding is started. In this case, whether or not the preheating temperature has been reached can be determined by checking with a Thermo Freon or a handy digital thermometer, or by having an experienced welder observe the color and molten state of the surface of the base material 1, based on experience. to decide.
従来のタングステンイナートガス溶接機は以上のように
構成されているので、銅または銅合金の溶接における予
熱温度をハンディデジタル温度計やサーモフレオンで計
測したり、あるいは溶接工の経験、技個にたよって計測
しなければならず、予熱温度を正確にしかもばらつきな
く判定することができないなどの課題があった。特に１
片側裏波溶接を行う場合等においては、裏波が出るかど
うかは予熱温度が適正かどうかできまるとともに。Conventional tungsten inert gas welding machines are configured as described above, so the preheating temperature for welding copper or copper alloys can be measured with a handy digital thermometer or Thermo Freon, or depending on the experience and skill of the welder. However, there were problems such as the inability to accurately and consistently determine the preheating temperature. Especially 1
When performing one-sided Uranami welding, whether Uranami will occur or not depends on whether the preheating temperature is appropriate.
溶接部の品質も左右されるにも拘らず、上記のように予
熱温度の正確な判定が不可能であるため、溶接部の品質
にばらつきを生じるなどの課題があった。Although the quality of the welded part also depends on the quality of the welded part, as described above, it is impossible to accurately determine the preheating temperature, which causes problems such as variations in the quality of the welded part.
また、サーモフレオンあるいはハンディデジタル温度計
で予熱温度を知るには、上記予熱を一時中断して、サー
モフレオンを母材１に塗り、あるいは測温部を母材１に
あてて予熱温度を確認せねばならず、このため予熱を中
断することによって作業能率が低下するほか、予熱温度
が高くなりすぎる場合があるなどの課題があった。なお
、かかる従来のタングステンイナートガス溶接機として
。In addition, to find out the preheating temperature using Thermofreon or a handy digital thermometer, temporarily stop the preheating process, apply Thermofreon to base material 1, or check the preheating temperature by applying thermofreon to base material 1. For this reason, interruption of preheating lowers work efficiency, and there are also problems such as the preheating temperature sometimes becoming too high. In addition, as such a conventional tungsten inert gas welding machine.
日本機械学会編２機械光学便覧、応用編Ｂ２−５６に類
似するものが記載されている。Something similar is described in the Handbook of Mechanical Optics 2, edited by the Japan Society of Mechanical Engineers, Applied Edition B2-56.
この発明は上記のような課題を解消するためになされた
もので、溶接部の近傍の温度を正確に検知して、これを
報知できるようにすることにより、開先が溶接可能な状
態になったかどうかを正確に判断でき、従って溶接に入
るタイミングを容易に知ることができるタングステンイ
ナートガス溶接機を得ることを目的とする。This invention was made to solve the above-mentioned problems, and by making it possible to accurately detect and notify the temperature near the welding part, the groove becomes ready for welding. To provide a tungsten inert gas welding machine capable of accurately determining whether or not the welding has been completed, and therefore easily knowing the timing to start welding.
この発明に係るタングステンイナートガス溶接機は、銅
または銅合金からなる２つの母材を、台板上において突
合せ状態で支持し、この台板上においてその各母材を押
え装置によって押圧保持できるようにし５上記母材の突
合せ部における開先対応部位付近にトーチ先端部からの
予熱用および溶接用のアークを当てられるようにし、さ
らにこのアークによる上記突合せ部の予熱温度を検知す
る予熱温度センサを、その突合せ部付近に取り付けてお
き、検知した予熱温度が設定値に達したときには、これ
を警報器などの報知手段により報知するような構成とし
たものである。A tungsten inert gas welding machine according to the present invention supports two base materials made of copper or copper alloy in a butt state on a base plate, and allows each base material to be pressed and held on the base plate by a holding device. 5. A preheating temperature sensor capable of applying a preheating and welding arc from the tip of the torch to the vicinity of the groove corresponding part in the abutting part of the base metal, and detecting the preheating temperature of the abutting part by this arc, The sensor is attached near the abutting portion, and when the detected preheating temperature reaches a set value, a notification means such as an alarm is used to notify the user of this.
この発明における報知手段は、予熱温度センサが突合せ
部のアークによる予熱温度が、所定の溶接開始条件とし
ての設定値に達したとき、警報器を鳴動させたり、メー
タや光などで視覚可能に表示して、溶接開始すべきを作
業者に報知する。The notification means in this invention is such that when the preheating temperature sensor detects that the preheating temperature due to the arc of the abutting portion reaches a set value as a predetermined welding start condition, it sounds an alarm or visually displays it with a meter or light. This notifies the operator that welding should start.
以下、この発明の一実施例を図について説明する。第１
図において、１は被溶接材である銅または銅合金の母材
、２は各母材１の突合せ部の開先。An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 1 is the base material of copper or copper alloy that is the material to be welded, and 2 is the bevel of the butt part of each base material 1.
３は溶融金属の溶落ちを防止する裏当て、４は突合せ部
およびその近傍を予熱したり、溶接したりするのに用い
るタングステンイナートガス溶接機のトーチ先端部、４
１はそのトーチ先端部４のノズル、４２はタングステン
電極、５は母材１を位置合せした後は、動かないように
台板上に締め付は固定する押え装置、６は裏当て３を収
納するとともに、押え装置５を取り付けている上記の台
板。3 is a backing plate that prevents molten metal from burning through; 4 is a torch tip of a tungsten inert gas welding machine used for preheating and welding the abutting portion and its vicinity; 4
1 is the nozzle of the torch tip 4, 42 is a tungsten electrode, 5 is a holding device that tightens and fixes the base material 1 on the base plate after positioning it, and 6 stores the backing 3. At the same time, the above-mentioned base plate to which the presser device 5 is attached.
７はシールドガス（アルゴン）、８はアーク、９は開先
２に溶融金属を供給する溶接棒である。また、１０は第
２図に示すような予熱温度センサ。7 is a shielding gas (argon), 8 is an arc, and 9 is a welding rod that supplies molten metal to the groove 2. Further, 10 is a preheating temperature sensor as shown in FIG.
１１はこの予熱温度センサ１０を構成する熱電対、１２
は熱電対１１の先端をろう付けした測温体であり、上記
の押え装置５によって母材１に押しつけられている。１
３は熱電対１１からの信号を処理し、数秒間報知手段と
しての警報ブザ−１４を鳴らす制御装置である。11 is a thermocouple constituting this preheating temperature sensor 10; 12
1 is a temperature measuring element having the tip of a thermocouple 11 brazed, and is pressed against the base material 1 by the above-mentioned holding device 5. 1
3 is a control device that processes the signal from the thermocouple 11 and sounds an alarm buzzer 14 as a notification means for several seconds.
次に動作について説明する。まず、銅あるいは銅合金の
各母材１を台板６上に載せ、開先２をアーク８の中心相
当部位に位置せしめ、押え装置５で保持する。次に、タ
ングステンイナートガス溶接機を起動させ、シールドガ
ス７を流し、アーク８を発生させる。このとき、開先２
の近傍のアーク長を溶接の場合より長く保って、前後お
よび左右に揺動させ、開先２とこの開先２近傍の母材１
を予熱する。こうして、あらかじめ、設定していた温度
に達すると、予熱温度センサ１０はこれを検知して、検
知信号を出し、この検知信号にもとづいて制御装置１３
は警報ブザ−１４を鳴らし、溶接開先が溶接可能温度に
達したことを報知する。Next, the operation will be explained. First, each base material 1 of copper or copper alloy is placed on the base plate 6, the groove 2 is positioned at a portion corresponding to the center of the arc 8, and held by the holding device 5. Next, the tungsten inert gas welding machine is started, the shielding gas 7 is caused to flow, and the arc 8 is generated. At this time, groove 2
The arc length near the groove 2 is kept longer than in the case of welding, and the groove 2 and the base material 1 near the groove 2 are swung back and forth and left and right.
Preheat. In this way, when the preset temperature is reached, the preheating temperature sensor 10 detects this and outputs a detection signal, and based on this detection signal, the control device 13
The alarm buzzer 14 sounds to notify that the welding groove has reached the weldable temperature.
続いて、タングステンイナートガス溶接機はアーク８を
溶接始端部に移動させ、充分な溶接電流をタングステン
電極に流して、アークによる溶接を開始する。ところで
、アーク８を前後左右に揺動させることによって開先２
付近を加熱すると、開先２が最も温度が高くなり、開先
２から離れるに従って温度が下がる。従って、開先２の
近傍に配置した予熱温度センサ１０が感知する温度は、
開先２の中央部の温度より低い温度となる。また、アー
ク８を前後左右に揺動させるパターンを一定にしておけ
ば、開先２の近傍に配置した予熱温度センサ１０が感知
した温度によって、開先２における温度を推定できる。Subsequently, the tungsten inert gas welding machine moves the arc 8 to the welding start end, supplies sufficient welding current to the tungsten electrode, and starts welding by the arc. By the way, by swinging the arc 8 back and forth and left and right, the groove 2 is
When heating the vicinity, the temperature becomes highest at the groove 2, and the temperature decreases as the distance from the groove 2 increases. Therefore, the temperature sensed by the preheating temperature sensor 10 placed near the groove 2 is:
The temperature is lower than the temperature at the center of the groove 2. Furthermore, if the pattern of swinging the arc 8 back and forth and left and right is kept constant, the temperature at the groove 2 can be estimated from the temperature sensed by the preheating temperature sensor 10 placed near the groove 2.
さらに、熱電対１１を矩形の測温体１２に取り付け、こ
れを各母材１に押しつけるようにしたのは、小さな熱容
量の予熱温度センサ１０だと、アーク加熱で加熱された
ときすぐに高温になってしまうことに鑑み、ここでは母
材１から熱伝導で伝わってくる熱で予熱温度センサ１０
を加熱させる方が、より母材１の温度に近い温度を検知
できるからである。Furthermore, the thermocouple 11 is attached to a rectangular temperature sensing element 12, which is pressed against each base material 1. If the preheating temperature sensor 10 has a small heat capacity, it will quickly reach a high temperature when heated by arc heating. In consideration of this, the preheating temperature sensor 10 is
This is because by heating the base material 1, a temperature closer to the temperature of the base material 1 can be detected.
なお、上記実施例では母材１を銅あるいは銅合金とした
ものを示したが、溶接性が悪く、かつ母材１を予熱しな
ければ溶接できない金属１例えば中高炭素鋼、低合金銅
、一部のアルミ合金等に適用してもよく、上記実施例と
同様の効果を奏する。In the above embodiments, the base material 1 is made of copper or a copper alloy, but metals 1 that have poor weldability and cannot be welded without preheating the base material 1, such as medium-high carbon steel, low alloy copper, etc. The present invention may also be applied to other aluminum alloys, etc., and the same effects as in the above embodiments can be obtained.
以上のように、この発明によれば銅または銅合金からな
る２つの母材を、白板上において突合せ状態で支持し、
この台板上においてその各母材を押え装置によって押圧
保持できるようにし、上記母材の突合せ部における開先
対応部位付近にトーチ先端部からの予熱用および溶接用
のアークを当てられるようにし、さらにこのアークによ
る上記突合せ部の予熱温度を検知する予熱温度センサを
、その突合せ部付近に取り付けておき、検知した予熱温
度が設定値に達したときには、これを警報器などの報知
手段により報知するように構成したので、迅速かつスム
ースに加熱を中断して予熱温度を測定する必要がなく、
常に一定温度に開先を予熱することができるとともに、
この予熱から溶接へ作業をスムースかつ迅速に移行させ
ることができ、溶接部を高品質でバラツキの少ない溶接
継手とすることができるものが得られる効果がある。As described above, according to the present invention, two base materials made of copper or copper alloy are supported in a butt state on a white board,
Each of the base materials can be pressed and held on the base plate by a holding device, and a preheating and welding arc from the tip of the torch can be applied to the vicinity of the groove corresponding part at the butt part of the base metal, Furthermore, a preheating temperature sensor that detects the preheating temperature of the abutting part due to this arc is installed near the abutting part, and when the detected preheating temperature reaches a set value, this is notified by a notification means such as an alarm. With this configuration, there is no need to interrupt heating and measure the preheating temperature quickly and smoothly.
It is possible to always preheat the groove to a constant temperature, and
The work can be smoothly and quickly transferred from this preheating to welding, and there is an effect that a welded joint with high quality and less variation can be obtained at the welded part.
また、銅または銅合金の予熱完了時を誰もが容易かつ正
確に知ることができるため１片側裏波溶接等の高度なテ
クニックを要する７斉接も、容易かつ迅速に行うことが
できるものが得られる効果があるる。In addition, since anyone can easily and accurately know when the preheating of copper or copper alloy is complete, it is possible to easily and quickly perform seven simultaneous weldings that require advanced techniques such as single-sided Uranami welding. There are benefits to be gained.
第１図はこの発明の一実施例によるタングステンイナー
トガス溶接機を示す正面図、第２図は第１図における予
熱温度センサを示す正面図、第３図は従来のタングステ
ンイナートガス溶接機を示す正面図である。
１は母材、２は開先、４はトーチ先端部、５は押え装置
、６は台板、１０は予熱温度センサ、１４は報知手段（
警報ブザ−）。
なお１図中、同一符号は同一、または相当部分を示す。
５押え珪ｉ
６：白板
１０、すタヘオＶ貧セン寸
第Fig. 1 is a front view showing a tungsten inert gas welding machine according to an embodiment of the present invention, Fig. 2 is a front view showing the preheating temperature sensor in Fig. 1, and Fig. 3 is a front view showing a conventional tungsten inert gas welding machine. It is. 1 is a base material, 2 is a groove, 4 is a torch tip, 5 is a holding device, 6 is a base plate, 10 is a preheating temperature sensor, and 14 is a notification means (
alarm buzzer). In Figure 1, the same reference numerals indicate the same or equivalent parts. 5 presser foot 6: white board 10, stage head V poor center size
Claims (1)
する台板と、この台板上に上記各母材を押圧保持する押
え装置と、上記母材の突合せ部における開先付近に対し
て予熱用のアークおよび溶接用のアークを当てるトーチ
先端部と、上記母材の突合せ部付近に取り付けられ、上
記アークによるこの突合せ部の予熱温度を検知する予熱
温度センサと、この予熱温度センサで検知した予熱温度
が設定値に達したことを報知する報知手段とを備えたタ
ングステンイナートガス溶接機。A base plate that supports two base materials made of copper or copper alloy in a butt state, a presser device that presses and holds each of the base materials on this base plate, and a groove near the butt portion of the base metals. A preheating temperature sensor is installed near the abutment between the preheating arc and the welding arc and the abutment of the base metal, and detects the preheating temperature of the abutment by the arc. A tungsten inert gas welding machine comprising a notification means for notifying that a preheating temperature reached a set value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25741889A JPH03118977A (en) | 1989-10-02 | 1989-10-02 | Tungsten inert gas welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25741889A JPH03118977A (en) | 1989-10-02 | 1989-10-02 | Tungsten inert gas welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03118977A true JPH03118977A (en) | 1991-05-21 |
Family
ID=17306095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25741889A Pending JPH03118977A (en) | 1989-10-02 | 1989-10-02 | Tungsten inert gas welding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03118977A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005329435A (en) * | 2004-05-20 | 2005-12-02 | Ishikawajima Harima Heavy Ind Co Ltd | Method and apparatus welding container |
| JP6104442B1 (en) * | 2016-08-23 | 2017-03-29 | 有限会社秋元鉛工所 | Method for welding thin copper plate, welding apparatus for thin copper plate, and method for producing drainage drain |
-
1989
- 1989-10-02 JP JP25741889A patent/JPH03118977A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005329435A (en) * | 2004-05-20 | 2005-12-02 | Ishikawajima Harima Heavy Ind Co Ltd | Method and apparatus welding container |
| JP6104442B1 (en) * | 2016-08-23 | 2017-03-29 | 有限会社秋元鉛工所 | Method for welding thin copper plate, welding apparatus for thin copper plate, and method for producing drainage drain |
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