JPH08192262A - Brazing equipment - Google Patents

Brazing equipment

Info

Publication number
JPH08192262A
JPH08192262A JP468595A JP468595A JPH08192262A JP H08192262 A JPH08192262 A JP H08192262A JP 468595 A JP468595 A JP 468595A JP 468595 A JP468595 A JP 468595A JP H08192262 A JPH08192262 A JP H08192262A
Authority
JP
Japan
Prior art keywords
brazing
temperature
torch
brazed
heating means
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
Application number
JP468595A
Other languages
Japanese (ja)
Inventor
Masaru Yamazaki
勝 山崎
Masami Iizuka
正美 飯塚
Kazuto Kinoshita
和人 木下
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP468595A priority Critical patent/JPH08192262A/en
Publication of JPH08192262A publication Critical patent/JPH08192262A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the accuracy in measuring the temperature by heating a work to be brazed using a high frequency induction heating means, and wrapping the vicinity of the part to be joined of the work to be brazed with the combustion flame from a torch heating means to stabilize the surface condition of a part to be observed by a non-contact temperature measuring means. CONSTITUTION: Works 1a, 1b to be brazed are heated by a high frequency induction heating means 3. After the temperature of the works 1a, 1b to be brazed rises to some degree, a torch 4 is ignited, and the vicinity of a part to be joined of the works to be brazed is wrapped with combustion flame. Oxidation of the works 1a, 1b to be brazed is prevented by the reducing effect in the gas combustion flame, the existing oxide film is also reduced to be removed, and the surface of the works to be brazed is cleaned. After the combustion flame by the gas torch 4 is stabilized, the measurement of the temperature of the works to be brazed is started by an infrared radiation thermometer 6. The measured temperature is compared with the target brazing temperature preset by a heating control means 7 to calculate the heating quantity to be outputted by the high frequency induction heating means 3.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は金属部材のろう付け装置
に係り、特に、ろう付け対象物を高周波誘導加熱方式で
加熱し、非接触温度測定手段によりろう付け対象物の温
度を測定し加熱量を制御するろう付け装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brazing apparatus for metal members, and more particularly to heating a brazing object by a high frequency induction heating method, and measuring the temperature of the brazing object by non-contact temperature measuring means and heating the brazing object. It relates to a brazing device for controlling the quantity.

【０００２】[0002]

【従来の技術】従来、高周波誘導加熱方式によるろう付
け装置では、特開平5−23840号公報に記載のように接合
部近辺に不活性ガスを吹き付けるものがあった。2. Description of the Related Art Conventionally, in a brazing apparatus using a high-frequency induction heating system, there has been a brazing apparatus which sprays an inert gas in the vicinity of a joint as described in JP-A-5-23840.

【０００３】[0003]

【発明が解決しようとする課題】従来法のフラックスの
みを用いて行うろう付け作業では、フラックスの効果が
持続せずろう付け対象物の酸化が進行してしまう可能性
があり、ろうのぬれ性が悪化しろう材の未溶着が発生す
ることがあった。In the brazing work performed by using only the flux of the conventional method, the effect of the flux may not be maintained and oxidation of the object to be brazed may proceed. However, there was a case where unwelded brazing material occurred.

【０００４】また、還元性ガス、または、不活性ガスな
どのふん囲気中でろう付けを行う方式では装置自体が大
がかりになりすぎ、ろう付け製品の製作コストが高くな
ること、複雑な機械の部分ろう付けには適用させにくい
ことなどの問題点があった。Further, in the method of brazing in an atmosphere of reducing gas or inert gas, the equipment itself becomes too large and the manufacturing cost of the brazed product becomes high, and the complicated machine part is used. There are problems such as difficulty in applying it to brazing.

【０００５】また、ガスを吹き付けながらろう付けを行
う方式では、大気中にガスを放出するため、還元性ガス
を使用することが難しく不活性ガスを使用することにな
るため十分な効果が得られない問題点があった。Further, in the method of brazing while spraying a gas, since the gas is released into the atmosphere, it is difficult to use a reducing gas and an inert gas is used, so that a sufficient effect is obtained. There was no problem.

【０００６】またフラックスのみを用いて高周波誘導加
熱手段を用いてろう付け作業を行う場合、フラックスの
効果が均一ではないためろう付け対象物の表面状態が変
化し非接触温度計の測定温度に誤差を生じ自動温度制御
が有効に働かない問題があった。When brazing is performed using only the flux and high frequency induction heating means, the effect of the flux is not uniform and the surface condition of the object to be brazed changes, resulting in an error in the temperature measured by the non-contact thermometer. There was a problem that the automatic temperature control did not work effectively.

【０００７】また、高周波誘導加熱手段の加熱分布特性
は加熱コイルに大きく依存するため加熱中に細やかな修
正ができず、ろう付け対象物の温度が不均一になってし
まう問題があった。Further, since the heating distribution characteristic of the high-frequency induction heating means largely depends on the heating coil, there is a problem that the temperature of the object to be brazed becomes non-uniform because it cannot be finely corrected during heating.

【０００８】本発明の目的は、ろう付け対象物のろう付
け部位近辺の表面を清浄に保ち、ろう付け作業での接着
性を改善させるとともに非接触温度計の測定温度の精度
を引き上げ、非接触温度計の測定温度を参照してろう付
け対象物の温度を制御するろう付け装置にて安定した高
い品質でろう付け作業を実施できる装置を提供すること
にある。The object of the present invention is to keep the surface of the object to be brazed in the vicinity of the brazing site clean, to improve the adhesiveness in the brazing operation, and to improve the accuracy of the temperature measured by the non-contact thermometer to improve the non-contact. An object of the present invention is to provide a brazing apparatus that controls the temperature of an object to be brazed with reference to the temperature measured by a thermometer and that can perform brazing work with stable and high quality.

【０００９】また、高周波誘導加熱手段で十分に制御で
きないろう付け対象物の温度分布の不均一をトーチ加熱
手段によって補正し、ろう付け対象物の温度の均一化を
促進させ高い品質でろう付け作業を実施できる装置を提
供することにある。Further, the non-uniform temperature distribution of the object to be brazed, which cannot be sufficiently controlled by the high-frequency induction heating means, is corrected by the torch heating means, and the temperature of the object to be brazed is promoted to be uniform so that the brazing work can be performed with high quality. An object of the present invention is to provide a device capable of carrying out.

【００１０】[0010]

【課題を解決するための手段】上記の目的を達成するた
め、本ろう付装置は、ろう付け対象物を高周波誘導によ
って加熱する、高周波誘導加熱手段と、ろう付け対象物
を可燃性のガスの燃焼炎によって加熱するトーチ加熱手
段と、ろう付け対象物の温度を非接触で測定する非接触
温度測定手段と、上記非接触温度測定手段により出力さ
れた上記ろう付け対象物の温度が設定値になるように上
記高周波誘導加熱手段の加熱量を制御する加熱制御手段
とを有している。In order to achieve the above object, the present brazing apparatus includes a high-frequency induction heating means for heating a brazing object by high-frequency induction, and a brazing object containing a combustible gas. A torch heating means for heating by a combustion flame, a non-contact temperature measuring means for measuring the temperature of a brazing object in a non-contact manner, and a temperature of the brazing object outputted by the non-contact temperature measuring means is set to a set value. The heating control means controls the heating amount of the high frequency induction heating means.

【００１１】また、トーチ加熱手段は非接触温度測定手
段の出力を参照して上記トーチ加熱手段を制御するトー
チ加熱制御手段を有する。Further, the torch heating means has a torch heating control means for controlling the torch heating means with reference to the output of the non-contact temperature measuring means.

【００１２】また、非接触温度測定手段の出力を参照し
て上記トーチ加熱手段と上記位置決め手段とを制御する
トーチ加熱制御手段を有する。Further, there is provided torch heating control means for controlling the torch heating means and the positioning means with reference to the output of the non-contact temperature measuring means.

【００１３】[0013]

【作用】本発明のろう付け装置によれば、ろう付け対象
物を高周波誘導加熱手段を用いて加熱すると共に、トー
チ加熱手段からの燃焼炎にてろう付け対象物の接合部近
辺を包み込む。燃焼炎内は還元性を持つようにガス混合
比を調整してある。ろう付け対象物の接合部近辺は燃焼
炎の持つ還元作用により清浄化されろう付け作業に好ま
しい状態となる。非接触温度測定手段の温度測定領域は
ろう付け対象物の接合部近辺に設定しており、この領域
のろう付け対象物の表面はトーチ加熱手段により形成さ
れる燃焼炎により表面状態が清浄に保たれるため、物体
表面より放射される光を観測して温度を測定する非接触
温度測定手段における測定精度が向上する。高周波誘導
加熱手段の加熱量は非接触温度測定手段で測定されたろ
う付け対象物の接合部近辺の温度を参照して、加熱制御
手段で算出される。加熱制御手段にはろう付け対象物の
ろう付けに適した所定温度を目標値として登録してお
き、この目標値と非接触温度測定手段が測定した温度を
比較して高周波誘導加熱手段に指令する出力を算出す
る。算出された出力を参照して高周波誘導加熱手段は加
熱量を調整し、ろう付け対象物をろう付けに適した所定
温度に制御する。以上の動作により、本発明によるろう
付け装置は、ろう付け作業中のろう付け対象物の接合面
近辺を清浄化することができ、ろう付け作業での接着性
が改善されると共にろう付け対象物の接合面近辺を観測
する非接触温度測定手段の測定精度が向上し、正確な温
度制御を行いろう付けに適切な温度で作業を実施するこ
とができ高品質なろう付けを行うことができる。According to the brazing apparatus of the present invention, the object to be brazed is heated by using the high-frequency induction heating means, and at the same time, the vicinity of the joint of the object to be brazed is wrapped with the combustion flame from the torch heating means. The gas mixing ratio is adjusted so that the combustion flame has a reducing property. The vicinity of the joint portion of the object to be brazed is cleaned by the reducing action of the combustion flame and becomes in a state suitable for brazing work. The temperature measurement area of the non-contact temperature measuring means is set near the joint of the brazing object, and the surface state of the brazing object in this area is kept clean by the combustion flame formed by the torch heating means. Because of the dripping, the measurement accuracy in the non-contact temperature measuring means for observing the light emitted from the surface of the object and measuring the temperature is improved. The heating amount of the high frequency induction heating means is calculated by the heating control means with reference to the temperature around the joint portion of the brazing object measured by the non-contact temperature measuring means. A predetermined temperature suitable for brazing of the object to be brazed is registered as a target value in the heating control means, and the target value is compared with the temperature measured by the non-contact temperature measuring means to instruct the high frequency induction heating means. Calculate the output. The high frequency induction heating means adjusts the heating amount with reference to the calculated output, and controls the brazing object to a predetermined temperature suitable for brazing. With the above operation, the brazing apparatus according to the present invention can clean the vicinity of the joint surface of the brazing object during the brazing operation, improve the adhesiveness in the brazing operation, and at the same time braze the object. The measurement accuracy of the non-contact temperature measuring means for observing the vicinity of the joint surface is improved, the temperature can be accurately controlled, the work can be performed at a temperature suitable for brazing, and high quality brazing can be performed.

【００１４】さらに、トーチ加熱手段に供給するガス流
量を調整するトーチ加熱制御手段を備え、非接触温度測
定手段で測定されたろう付け対象物の接合部近辺の温度
を参照して、トーチ加熱制御手段でトーチ加熱手段に供
給するガス流量を制御する。トーチ加熱制御手段にはろ
う付け対象物がろう付けに適した所定温度を目標値とし
て登録しておき、この目標値と非接触温度測定手段が測
定した温度とを比較してトーチ加熱手段に供給するガス
流量を調整する。ガス流量の算出は非接触温度測定手段
が測定した温度が目標値に整定するように高周波加熱手
段の出力算出と同様に負フィードバックをかける手法
や、トーチ加熱手段による還元作用を重視して、ろう付
け対象物が低温のときには、供給するガス流量を少な
く、ろう付け対象物が高温のときには多くする手法など
を用いてトーチ加熱制御手段の制御則を変更することに
より任意の制御手法を用いることが可能である。Further, the torch heating control means for adjusting the flow rate of the gas supplied to the torch heating means is provided, and the torch heating control means is referred to by referring to the temperature in the vicinity of the joint portion of the brazing object measured by the non-contact temperature measuring means. Controls the flow rate of gas supplied to the torch heating means. A predetermined temperature suitable for brazing of the object to be brazed is registered as a target value in the torch heating control means, and this target value is compared with the temperature measured by the non-contact temperature measuring means and supplied to the torch heating means. Adjust the gas flow rate. The gas flow rate should be calculated by giving negative feedback as in the output calculation of the high-frequency heating means so that the temperature measured by the non-contact temperature measuring means settles to a target value, or by putting emphasis on the reducing action of the torch heating means. It is possible to use an arbitrary control method by changing the control law of the torch heating control means by using a method of reducing the gas flow rate to be supplied when the object to be brazed is low, and increasing it when the object to be brazed is high. It is possible.

【００１５】トーチ加熱手段へ供給するガス流量を高周
波加熱手段と同様に負フィードバックにより算出した場
合、ろう付け温度制御性重視の設定となり正確に温度を
コントロールできる。ガス流量をろう付け対象物が低温
のときには少なく、ろう付け対象物が高温のときには、
多くする手法を用いた場合、ろう付け対象物の酸化作用
が活発になる高温域で還元作用を強くすることとなりト
ーチ加熱手段による還元作用を重視した設定となり、高
温域でも確実に酸化防止することができる。When the gas flow rate to be supplied to the torch heating means is calculated by negative feedback as in the high frequency heating means, the brazing temperature controllability is emphasized and the temperature can be accurately controlled. The gas flow rate is low when the object to be brazed is low, and when the object to be brazed is high,
If the method of increasing the number is used, the reducing action will be strengthened in the high temperature range where the oxidation action of the brazing object becomes active, and the reduction action by the torch heating means will be emphasized, and the oxidation will be reliably prevented even in the high temperature range. You can

【００１６】以上の動作により、ろう付け作業中のろう
付け対象物の接合面近辺を清浄化することができ、ろう
付け作業での接着性が改善されると共にろう付け対象物
の接合面近辺を観測する非接触温度測定手段の測定精度
が向上し、正確な温度制御を行いろう付けに適切な温度
で作業を実施することができる。さらに、トーチ加熱手
段へ供給するガス流量を制御することによりトーチ加熱
手段によって加熱される領域の温度、また還元する強さ
を調整でき、ろう付け対象物に合わせて適した状態へ制
御することができ高品質なろう付けを行うことができ
る。By the above operation, the vicinity of the joint surface of the object to be brazed during the brazing operation can be cleaned, the adhesiveness in the brazing operation is improved, and the vicinity of the joint surface of the object to be brazed is improved. The measurement accuracy of the non-contact temperature measuring means to be observed is improved, and accurate temperature control can be performed to perform work at a temperature suitable for brazing. Furthermore, by controlling the flow rate of the gas supplied to the torch heating means, the temperature of the region heated by the torch heating means and the strength of reduction can be adjusted, and it is possible to control to a state suitable for the object to be brazed. It is possible to perform high quality brazing.

【００１７】さらに、トーチ加熱手段のろう付け対象物
に対する位置を任意の場所に定める位置決め手段と、ト
ーチ加熱手段は非接触温度測定手段の出力を参照してト
ーチ加熱手段と位置決め手段を制御するトーチ加熱制御
手段を有する。非接触温度測定手段で測定したろう付け
対象物の接合部近辺の温度を高周波誘導加熱手段の加熱
制御手段に入力し高周波誘導加熱手段の出力を制御する
とともに、トーチ加熱制御手段に入力しトーチ加熱手段
の加熱量，位置を制御する。トーチ加熱手段の制御はろ
う付け対象物の表面が清浄であるように温度に応じて表
面を清浄するために必要なガス量を供給すると共にろう
付け対象物の温度が均一になるように温度が低い部分に
トーチ加熱手段による最加熱部が位置するように位置決
め手段を制御しトーチ加熱手段の位置を変更する。以上
の動作により、ろう付け対象物の表面が清浄かつ温度が
均一になるように制御することができ、ろうのぬれ性が
改善されると共にろう付け対象物の接合部近辺を観測す
る非接触温度測定手段の測定精度が向上し、正確な温度
制御が実施できろう付けに適切な温度で作業することが
可能となる。さらにトーチ加熱手段へ供給するガス流量
とトーチ加熱手段の位置を制御することによりトーチ加
熱手段によって加熱・還元される領域の位置とその効果
をろう付け対象物に合わせて調整することができる。こ
れによりろう付け対象物の接合部近辺の温度を均一に保
ちつつ表面を清浄化することができ高品位なろう付けを
実施することができる。Furthermore, the torch heating means determines the position of the torch heating means with respect to the object to be brazed at an arbitrary position, and the torch heating means refers to the output of the non-contact temperature measuring means to control the torch heating means and the positioning means. It has a heating control means. The temperature near the joint of the brazing object measured by the non-contact temperature measuring means is input to the heating control means of the high-frequency induction heating means to control the output of the high-frequency induction heating means, and also input to the torch heating control means to heat the torch. The heating amount and position of the means are controlled. The control of the torch heating means supplies the amount of gas necessary for cleaning the surface according to the temperature so that the surface of the object to be brazed is clean and the temperature so that the temperature of the object to be brazed becomes uniform. The position of the torch heating means is changed by controlling the positioning means so that the most heated portion by the torch heating means is located in the lower portion. By the above operation, the surface of the object to be brazed can be controlled so that the surface is clean and the temperature is uniform, the wettability of the solder is improved, and the non-contact temperature for observing the vicinity of the joint of the object to be brazed The measurement accuracy of the measuring means is improved, and accurate temperature control can be performed, and it becomes possible to work at a temperature suitable for brazing. Further, by controlling the flow rate of the gas supplied to the torch heating means and the position of the torch heating means, the position of the region heated / reduced by the torch heating means and its effect can be adjusted according to the object to be brazed. As a result, the surface of the object to be brazed can be cleaned while maintaining a uniform temperature in the vicinity of the joint, and high-quality brazing can be performed.

【００１８】[0018]

【実施例】本発明の実施例を図１から図４により説明す
る。図１は本発明によるろう付け装置の一実施例を示す
ブロック図である。図１において、ろう付け対象物１
ａ,１ｂはろう付け作業の前作業でフラックス塗布を済
ませており、図示しない把持装置で所定の位置に固定さ
れている。高周波誘導加熱手段はワークコイル２，電源
部３とからなり、トーチ加熱手段は、トーチ４，ガス供
給部５とガス供給源とからなる。トーチに供給するガス
はプロパン−酸素混合ガスである。トーチ４は接合面付
近を燃焼炎で包み込む位置に設置してある。非接触温度
測定手段として赤外線放射温度計６が、ろう付け対象物
の温度を測定するために設置してあり、トーチ加熱手段
で形成される燃焼炎によって清浄に保たれる表面が測定
領域となるように調整してある。加熱制御手段７は、測
定した温度とろう付けの適温を比較し、高周波誘導加熱
手段で印加すべき加熱量を算出する。高周波誘導加熱手
段電源部は算出された加熱量を参照しワークコイルに印
加する電力を制御する。Embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing an embodiment of a brazing apparatus according to the present invention. In FIG. 1, the brazing object 1
A and 1b have been flux-coated before the brazing work, and are fixed at predetermined positions by a gripping device (not shown). The high frequency induction heating means comprises a work coil 2 and a power source section 3, and the torch heating means comprises a torch 4, a gas supply section 5 and a gas supply source. The gas supplied to the torch is a propane-oxygen mixed gas. The torch 4 is installed at a position where the vicinity of the joint surface is covered with combustion flame. An infrared radiation thermometer 6 is installed as a non-contact temperature measuring means to measure the temperature of the object to be brazed, and the surface kept clean by the combustion flame formed by the torch heating means serves as the measurement area. Is adjusted. The heating control means 7 compares the measured temperature with an appropriate brazing temperature to calculate the amount of heating to be applied by the high frequency induction heating means. The high frequency induction heating means power supply unit controls the electric power applied to the work coil with reference to the calculated heating amount.

【００１９】この構成のろう付け装置の動作は次の通り
である。まず、図１のろう付け対象物１ａ，１ｂは高周
波誘導加熱手段で加熱される。次に、ろう付け対象物の
温度がある程度上昇してから、トーチに点火し、ろう付
け対象物の接合部及び接合部近辺を燃焼炎で包み込む。
ガス燃焼炎内の還元作用によりろう付け対象物の酸化が
防止され、現存する酸化皮膜をも還元して取り除きろう
付け対象物の表面を清浄することができる。ガストーチ
による燃焼炎が安定してから赤外線放射温度計によるろ
う付け対象物の温度の測定を開始する。ここで、ガスト
ーチ加熱手段の点火時期が高周波加熱手段の加熱開始時
期と同時であること、赤外線放射温度計の測定開始時期
が高周波加熱手段の加熱開始時期と同時であることも可
能である。測定した温度を加熱制御手段で予め設定して
ある目標ろう付け温度と比較し高周波誘導加熱手段で出
力すべき加熱量を算出する。加熱量の算出には通常の制
御で用いられるＰＩＤ制御やＰＤ制御のような一般的な
演算が用いられる。高周波誘導加熱手段電源部は、この
算出された加熱量を参照しワークコイルに印加する電力
を変化させる。The operation of the brazing device having this structure is as follows. First, the brazing objects 1a and 1b in FIG. 1 are heated by the high frequency induction heating means. Next, after the temperature of the object to be brazed rises to some extent, the torch is ignited, and the joint and the vicinity of the joint of the object to be brazed are wrapped with a combustion flame.
Oxidation of the object to be brazed is prevented by the reducing action in the gas combustion flame, and the existing oxide film can also be reduced and removed to clean the surface of the object to be brazed. After the combustion flame by the gas torch becomes stable, the temperature of the brazing object is measured by the infrared radiation thermometer. Here, it is possible that the ignition timing of the gas torch heating means is the same as the heating start timing of the high frequency heating means, and the measurement start timing of the infrared radiation thermometer is the same as the heating start timing of the high frequency heating means. The measured temperature is compared with the target brazing temperature preset by the heating control means to calculate the heating amount to be output by the high frequency induction heating means. A general calculation such as PID control or PD control used in normal control is used to calculate the heating amount. The high frequency induction heating means power supply unit changes the electric power applied to the work coil with reference to the calculated heating amount.

【００２０】加熱を進め、ろう付け対象物が適温になっ
た時点でろう差しを行いろう付けを実施する。また、ろ
う材を予め接合部または接合部付近にろう材を装着して
加熱する置きろう方式で実施することも可能である。本
装置は加熱装置に関する部分であり、ろう材の差しは自
動，手動の区別を問わず実施できるものである。ろう付
け作業の間も、高周波誘導加熱手段の出力は赤外線放射
温度計による測定温度により制御されるため安定に適温
に保つことができる。以上のろう付け中のろう付け対象
物の温度，高周波誘導加熱手段の出力とトーチ加熱手段
に供給するガス流量とろう付けの状態を図２に示す。The heating is advanced, and brazing is performed by brazing when the object to be brazed reaches an appropriate temperature. Further, it is also possible to carry out the placement brazing method in which the brazing material is attached in advance to the joint portion or in the vicinity of the joint portion and heated. This device is a part related to the heating device, and the soldering of the brazing filler metal can be performed automatically or manually. Even during the brazing operation, the output of the high-frequency induction heating means is controlled by the temperature measured by the infrared radiation thermometer, so that it can be stably maintained at an appropriate temperature. FIG. 2 shows the temperature of the object to be brazed during brazing, the output of the high frequency induction heating means, the gas flow rate supplied to the torch heating means, and the brazing state.

【００２１】以上の動作により、ろう付け中のろう付け
対象物の表面を清浄に保ちつつろう付け作業を実施する
ことができ、ろうのぬれ性を良好に保ち、ろうの付着，
回りともに良好となる。さらに赤外線放射温度計を用い
てろう付け対象物の清浄な表面の温度を測定し、測定さ
れた温度を参照し高周波誘導加熱手段の出力を制御する
ことにより、高精度の温度測定に基づく加熱量制御がで
き、ろう付けに適した温度でろう付け作業を実施するこ
とができろう付け作業の信頼性を向上させることができ
る。By the above operation, it is possible to carry out the brazing work while keeping the surface of the brazing object being brazed clean, the wettability of the brazing is kept good, and the adhesion of the brazing,
It will be good both around. Furthermore, by measuring the temperature of the clean surface of the brazing object using an infrared radiation thermometer and referring to the measured temperature to control the output of the high frequency induction heating means, the heating amount based on highly accurate temperature measurement. The brazing work can be controlled and the brazing work can be performed at a temperature suitable for the brazing, and the reliability of the brazing work can be improved.

【００２２】図３は本実施例での加熱制御手段内部の演
算のフローチャートを示す。加熱制御手段には赤外線放
射温度計で測定した温度Ｔが入力される。これを設定値
保持部７ａに記憶してあるろう付け目標温度Ｔｄと比較
し偏差量Ｔｄ−Ｔを算出する。偏差量Ｔｄ−ＴはＰＩＤ
演算部７ｂ，ＰＤ演算部７ｃ，ＰＩＤ／ＰＤ切り換え判
断部７ｄに入力される。ＰＩＤ／ＰＤ切り換え判断部で
は偏差が大きい場合にはＰＤ演算部の値を、偏差が小さ
い場合にはＰＩＤ演算部の値を採用する判断値を出力
し、算出された判断値によりゲート７ｅで次段の加熱量
算出部７ｆに出力する値を選択する。加熱量算出部では
高周波誘導加熱手段の入力に適合するように値を変換す
る。以上の動作で加熱制御手段は測定温度から加熱量を
算出する。FIG. 3 shows a flow chart of the calculation inside the heating control means in this embodiment. The temperature T measured by the infrared radiation thermometer is input to the heating control means. This is compared with the brazing target temperature Td stored in the set value holding unit 7a to calculate the deviation amount Td-T. Deviation amount Td-T is PID
It is input to the calculation unit 7b, the PD calculation unit 7c, and the PID / PD switching determination unit 7d. The PID / PD switching judgment unit outputs the judgment value which adopts the value of the PD calculation unit when the deviation is large and the judgment value which adopts the value of the PID calculation unit when the deviation is small, and the gate 7e outputs the judgment value according to the calculated judgment value. A value to be output to the stage heating amount calculation unit 7f is selected. The heating amount calculation unit converts the value so as to match the input of the high frequency induction heating means. Through the above operation, the heating control means calculates the heating amount from the measured temperature.

【００２３】図４は本発明によるろう付け装置の赤外線
放射温度計６の出力を参照しガス流量制御部９がガス流
量を調整できるように構成した場合の一実施例を示すブ
ロック図である。図４において、ろう付け対象物１ａ，
１ｂはろう付け作業の前作業でフラックス塗布を済ませ
ている。図示しない把持装置で所定の位置に固定されて
いる。高周波誘導加熱手段はワークコイル２，電源部３
とからなる。トーチ４は、接合面付近を燃焼炎で包み込
む様に設置してあり、ガス供給部５から供給されるガス
をガス流量制御部９によって制御する、ガス供給源，ト
ーチの保持装置などは図示していない。FIG. 4 is a block diagram showing an embodiment in which the gas flow rate control unit 9 is configured to adjust the gas flow rate by referring to the output of the infrared radiation thermometer 6 of the brazing apparatus according to the present invention. In FIG. 4, the brazing object 1a,
In 1b, the flux application is completed before the brazing work. It is fixed at a predetermined position by a gripping device (not shown). The high frequency induction heating means is the work coil 2 and the power supply 3
Consists of The torch 4 is installed so as to wrap the vicinity of the joint surface with a combustion flame, and the gas supplied from the gas supply unit 5 is controlled by the gas flow rate control unit 9. A gas supply source, a torch holding device, etc. are illustrated. Not not.

【００２４】本実施例では、ガストーチに供給するガス
はプロパン−酸素混合ガスである。トーチ４は接合面付
近を燃焼炎で包み込む位置に設置してある。非接触温度
測定手段として赤外線放射温度計６が、ろう付け対象物
の温度を測定するために設置してあり、トーチ加熱手段
で形成される燃焼炎によって清浄に保たれる表面が測定
領域となるように調整してある。加熱制御手段７は、測
定した温度とろう付けの適温を比較し、高周波誘導加熱
手段にて印加すべき加熱量を算出するようになってい
る。高周波誘導加熱手段電源部は算出された加熱量を参
照しワークコイルに印加する電力を制御する構成となっ
ている。In this embodiment, the gas supplied to the gas torch is a propane-oxygen mixed gas. The torch 4 is installed at a position where the vicinity of the joint surface is covered with combustion flame. An infrared radiation thermometer 6 is installed as a non-contact temperature measuring means to measure the temperature of the object to be brazed, and the surface kept clean by the combustion flame formed by the torch heating means serves as the measurement area. Is adjusted. The heating control means 7 compares the measured temperature with an appropriate brazing temperature and calculates the amount of heating to be applied by the high frequency induction heating means. The high frequency induction heating means power supply unit is configured to control the electric power applied to the work coil with reference to the calculated heating amount.

【００２５】この構成のろう付け装置の動作は次の通り
である。The operation of the brazing device having this structure is as follows.

【００２６】まず、図４のろう付け対象物１ａ，１ｂは
高周波誘導加熱手段にて加熱される。次に、ろう付け対
象物の温度がある程度上昇してから、トーチに点火し、
ろう付け対象物の接合部及び接合部近辺を燃焼炎で包み
込む。ガス燃焼炎内の還元作用によりろう付け対象物の
酸化が防止されるとともに現存する酸化皮膜をも還元し
て取り除きろう付け対象物の表面を清浄することができ
る。ガストーチによる燃焼炎が安定してから赤外線放射
温度計によるろう付け対象物の温度の測定を開始する。
ここで、ガストーチ加熱手段の点火時期が高周波加熱手
段の加熱開始時期と同時であること、赤外線放射温度計
の測定開始時期が高周波加熱手段の加熱開始時期と同時
であることも可能である。測定した温度を加熱制御手段
で予め設定してある目標ろう付け温度と比較し高周波誘
導加熱手段で出力すべき加熱量を算出する。加熱量の算
出には通常の制御で用いられるＰＩＤ制御やＰＤ制御の
ような一般的な演算が用いられる。高周波誘導加熱手段
電源部は、この算出された加熱量を参照しワークコイル
に印加する電力を変化させる。First, the brazing objects 1a and 1b in FIG. 4 are heated by the high frequency induction heating means. Next, after the temperature of the object to be brazed rises to some extent, the torch is ignited,
The joint and the vicinity of the joint of the object to be brazed are wrapped with a combustion flame. Oxidation of the object to be brazed is prevented by the reducing action in the gas combustion flame, and the existing oxide film is also reduced and removed to clean the surface of the object to be brazed. After the combustion flame by the gas torch becomes stable, the temperature of the brazing object is measured by the infrared radiation thermometer.
Here, it is possible that the ignition timing of the gas torch heating means is the same as the heating start timing of the high frequency heating means, and the measurement start timing of the infrared radiation thermometer is the same as the heating start timing of the high frequency heating means. The measured temperature is compared with the target brazing temperature preset by the heating control means to calculate the heating amount to be output by the high frequency induction heating means. A general calculation such as PID control or PD control used in normal control is used to calculate the heating amount. The high frequency induction heating means power supply unit changes the electric power applied to the work coil with reference to the calculated heating amount.

【００２７】またトーチ加熱制御手段にて赤外線温度計
が測定した温度とトーチ加熱制御手段に予め設定してあ
る目標温度と比較しトーチ加熱手段に供給すべきガス流
量を算出する。ガス流量の算出にはろう付け対象物の温
度制御を重視して高周波誘導加熱手段の出力を決定する
手法と同じように目標温度をろう付け適温に設定し通常
の制御で用いられるＰＩＤ制御やＰＤ制御のような一般
的な演算を用いる方式と、トーチ加熱手段による還元効
果を重視して目標値をろう付け対象物の酸化が活発にな
る温度より低めに設定し目標温度より測定温度が低い場
合にはガスの流量を少なくし、目標温度より測定温度が
高い場合には酸化を防止するためガス流量を増やす方式
が考えられる。Further, the temperature measured by the infrared thermometer by the torch heating control means is compared with the target temperature preset in the torch heating control means to calculate the gas flow rate to be supplied to the torch heating means. In the calculation of the gas flow rate, the target temperature is set to an appropriate brazing temperature and the PID control or PD used in the normal control is used in the same manner as in the method of determining the output of the high frequency induction heating means by emphasizing the temperature control of the brazing object. When the target value is set lower than the temperature at which oxidation of the brazing target is active and the measured temperature is lower than the target temperature, with emphasis on the reduction effect of the torch heating means A possible method is to reduce the gas flow rate and increase the gas flow rate to prevent oxidation when the measured temperature is higher than the target temperature.

【００２８】加熱を進め、ろう付け対象物が適温になっ
た時点でろう差しを行いろう付けを実施する。また、ろ
う材を予め接合部または接合部付近にろう材を装着して
加熱する置きろう方式で実施することも可能である。本
装置は加熱装置に関する部分であり、ろう材の差しは自
動，手動の区別を問わず実施できるものである。ろう付
け作業の間も、高周波誘導加熱手段の出力は赤外線放射
温度計による測定温度により制御されるため安定に適温
に保つことができる。The heating is advanced, and brazing is performed by brazing when the object to be brazed reaches an appropriate temperature. Further, it is also possible to carry out the placement brazing method in which the brazing material is attached in advance to the joint portion or in the vicinity of the joint portion and heated. This device is a part related to the heating device, and the soldering of the brazing filler metal can be performed automatically or manually. Even during the brazing operation, the output of the high-frequency induction heating means is controlled by the temperature measured by the infrared radiation thermometer, so that it can be stably maintained at an appropriate temperature.

【００２９】以上の動作により、ろう付け中のろう付け
対象物の表面を清浄に保ちつつろう付け作業を実施する
ことができ、ろうのぬれ性を良好に保ち、ろうの付着，
回りともに良好となる。さらに赤外線放射温度計を用い
てろう付け対象物の清浄な表面の温度を測定し、測定さ
れた温度を参照し高周波誘導加熱手段の出力を制御する
ことにより、高精度の温度測定に基づく加熱量制御がで
き、ろう付けに適した温度でろう付け作業を実施するこ
とができる。さらに、トーチ加熱手段に供給するガス流
量をろう付け対象物の温度に応じて変化させることによ
り還元効果を調整でき、安定した清浄面をつくることが
できろう付け作業の信頼性を向上させることができる。By the above operation, it is possible to carry out the brazing work while keeping the surface of the object to be brazed during the brazing clean, the wettability of the brazing is kept good, and the adhesion of the brazing,
It will be good both around. Furthermore, by measuring the temperature of the clean surface of the brazing object using an infrared radiation thermometer and referring to the measured temperature to control the output of the high frequency induction heating means, the heating amount based on highly accurate temperature measurement. The brazing operation can be performed at a temperature that is controllable and suitable for brazing. Furthermore, the reduction effect can be adjusted by changing the gas flow rate supplied to the torch heating means according to the temperature of the brazing object, and a stable clean surface can be created, thus improving the reliability of brazing work. it can.

【００３０】図５は本発明によるろう付け装置のトーチ
加熱手段の位置決め手段を有する場合の一実施例を示す
ブロック図である。図５において、ろう付け対象物１
ａ，１ｂはろう付け作業の前作業でフラックス塗布を済
ませてあり、図示しない把持装置で所定の位置に固定さ
れている。高周波誘導加熱手段はワークコイル２，電源
部３とからなる。トーチ６は接合面付近を燃焼炎で包み
込む様に設置してあり、その位置は位置決め手段１１に
より制御される。トーチ６にガス供給部５から供給され
るガス流量はガス流量制御部９によって制御される。非
接触温度測定手段として赤外線カメラ１４がろう付け対
象物の温度画像を測定するために設置してあり、トーチ
加熱手段で形成される燃焼炎によって清浄に保たれる表
面が測定領域となるように調整してある。赤外線カメラ
で得た画像情報は温度算出部１２と均一度算出部１３に
入力され、温度，均一度が算出される。温度，均一度は
高周波誘導加熱コイル出力演算部７，ガス流量演算部
８，移動量演算部１０に入力される。各演算部はそれぞ
れ高周波誘導加熱手段の出力，ガス流量，トーチ加熱手
段の移動量を演算する構成となっている。FIG. 5 is a block diagram showing an embodiment in which the torch heating means of the brazing apparatus according to the present invention has a positioning means. In FIG. 5, the object to be brazed 1
A and 1b have been flux-coated before the brazing work, and are fixed at predetermined positions by a gripping device (not shown). The high frequency induction heating means includes a work coil 2 and a power supply section 3. The torch 6 is installed so that the vicinity of the joint surface is covered with a combustion flame, and its position is controlled by the positioning means 11. The gas flow rate supplied to the torch 6 from the gas supply section 5 is controlled by the gas flow rate control section 9. An infrared camera 14 is installed as a non-contact temperature measuring means for measuring a temperature image of a brazing object, and a surface kept clean by a combustion flame formed by the torch heating means serves as a measurement area. It is adjusted. The image information obtained by the infrared camera is input to the temperature calculation unit 12 and the uniformity calculation unit 13, and the temperature and the uniformity are calculated. The temperature and the uniformity are input to the high frequency induction heating coil output calculation unit 7, the gas flow rate calculation unit 8, and the movement amount calculation unit 10. Each computing unit is configured to compute the output of the high frequency induction heating means, the gas flow rate, and the movement amount of the torch heating means.

【００３１】この構成のろう付け装置の動作は次の通り
である。The operation of the brazing device having this structure is as follows.

【００３２】まず、図５のろう付け対象物１ａ，１ｂは
高周波誘導加熱手段で加熱される。次にろう付け対象物
の温度がある程度上昇してから、トーチに点火しろう付
け対象物の接合部及び接合部近辺を燃焼炎で包み込む。
ガス燃焼炎内の還元作用によりろう付け対象物の酸化が
防止されるとともに現存する酸化皮膜をも還元して取り
除きろう付け対象物の表面を清浄することができる。ガ
ストーチによる燃焼炎が安定してから赤外線カメラによ
るろう付け対象物の温度画像の解析を開始する。ここ
で、ガストーチ加熱手段への点火時期が高周波誘導加熱
手段の加熱開始時期と同時であることと、赤外線カメラ
で取得した画像の解析を開始する時期が高周波誘導加熱
手段の加熱開始時期と同時であることも可能である。赤
外線カメラで取得した温度画像は温度算出部と均一度算
出部で解析され温度，均一度が算出される。温度算出部
では温度が高い部分は赤外線カメラで明るく観測される
ため、赤外線カメラの観測輝度を読み取りこれに検出素
子などの特性を補正して温度を算出する。均一度算出部
での演算の例を図６に示す。均一度算出部ではカメラ画
像を例えば３×３の領域１５に分割し、各領域にて温度
を算出する。各領域の温度は最高温度領域の値を参照し
て規格化する。均一度算出部には予め各領域の温度の高
低と温度の偏りの関係を記述したテンプレート１６を用
意しておき、算出され各領域の温度とテンプレートのマ
ッチングを行い、最も整合性１７の高いテンプレートの
示す偏りを均一度として算出する。算出された均一度と
算出された温度を参照し移動量算出部１０にてろう付け
対象物の温度を均一にするため必要なトーチ４の移動量
が算出される。算出した移動量を参照し位置決め手段１
１がトーチ４を移動させろう付け対象物の温度が均一に
なるようにする。First, the objects 1a and 1b to be brazed in FIG. 5 are heated by the high frequency induction heating means. Next, after the temperature of the object to be brazed rises to some extent, the torch is ignited and the joint and the vicinity of the joint of the object to be brazed are wrapped with a combustion flame.
Oxidation of the object to be brazed is prevented by the reducing action in the gas combustion flame, and the existing oxide film is also reduced and removed to clean the surface of the object to be brazed. After the combustion flame from the gas torch stabilizes, the infrared camera starts to analyze the temperature image of the brazing object. Here, the ignition timing of the gas torch heating means is the same as the heating start timing of the high frequency induction heating means, and the timing of starting the analysis of the image acquired by the infrared camera is the same as the heating start timing of the high frequency induction heating means. It is also possible. The temperature image acquired by the infrared camera is analyzed by the temperature calculation unit and the uniformity calculation unit to calculate the temperature and the uniformity. In the temperature calculation unit, a portion having a high temperature is observed brightly by the infrared camera. Therefore, the observation brightness of the infrared camera is read and the characteristics of the detection element and the like are corrected to calculate the temperature. FIG. 6 shows an example of calculation in the uniformity calculating section. The uniformity calculation unit divides the camera image into, for example, 3 × 3 regions 15, and calculates the temperature in each region. The temperature of each area is standardized by referring to the value in the maximum temperature area. In the uniformity calculation unit, a template 16 in which the relationship between the temperature rise and fall of each region and the temperature bias is described is prepared in advance, and the calculated temperature and template of each region are matched to obtain the template with the highest consistency 17. Is calculated as the uniformity. With reference to the calculated homogeneity and the calculated temperature, the movement amount calculation unit 10 calculates the movement amount of the torch 4 required to make the temperature of the brazing object uniform. Positioning means 1 with reference to the calculated movement amount
1 moves the torch 4 so that the temperature of the object to be brazed becomes uniform.

【００３３】加熱を進め、ろう付け対象物が適温になっ
た時点でろう差しを行いろう付けを実施する。また、ろ
う材を予め接合部または接合部付近にろう材を装着して
加熱する置きろう方式で実施することも可能である。本
装置は加熱装置に関する部分であり、ろう材の差しは自
動，手動の区別を問わず実施できるものである。ろう付
け作業の間も、高周波誘導加熱手段の出力とトーチ加熱
手段のガス流量は赤外線カメラによる測定温により制御
されるため安定に適温かつ均一に保つことができる。When the heating is advanced and the object to be brazed reaches an appropriate temperature, brazing is performed to perform brazing. Further, it is also possible to carry out the placement brazing method in which the brazing material is attached in advance to the joint portion or in the vicinity of the joint portion and heated. This device is a part related to the heating device, and the soldering of the brazing filler metal can be performed automatically or manually. Even during the brazing operation, the output of the high frequency induction heating means and the gas flow rate of the torch heating means are controlled by the temperature measured by the infrared camera, so that the temperature can be stably maintained at an appropriate temperature and uniform.

【００３４】以上の動作により、ろう付け中のろう付け
対象物の表面を清浄に保ちつつろう付け作業を実施する
ことができ、ろうのぬれ性を良好に保ち、ろうの付着，
回りともに良好となる。さらに赤外線カメラを用いてろ
う付け対象物の清浄な表面の温度を測定し、測定された
温度を参照し高周波誘導加熱手段の出力を制御すること
により、高精度な温度測定に基づく加熱量制御ができ、
ろう付けに適した温度でろう付け作業を実施することが
できる。さらに、トーチ加熱手段に供給するガス流量を
ろう付け対象物の温度に応じて変化させることにより還
元効果を調整でき、安定した清浄面をつくることができ
る。さらに赤外線カメラで測定したろう付け対象物の均
一度を参照しトーチ加熱手段の位置を調整し加熱ポイン
トを移動させることによりろう付け対象物の温度を均一
化させることができろう付け作業の信頼性を向上させる
ことができる。By the above operation, it is possible to carry out the brazing work while keeping the surface of the brazing object being brazed clean, the wettability of the brazing is kept good, and the adhesion of the brazing,
It will be good both around. Furthermore, by measuring the temperature of the clean surface of the object to be brazed using an infrared camera and referring to the measured temperature to control the output of the high frequency induction heating means, it is possible to control the heating amount based on highly accurate temperature measurement. You can
The brazing operation can be carried out at a temperature suitable for brazing. Furthermore, the reduction effect can be adjusted by changing the gas flow rate supplied to the torch heating means according to the temperature of the object to be brazed, and a stable clean surface can be formed. Furthermore, referring to the uniformity of the brazing object measured with an infrared camera, the temperature of the brazing object can be made uniform by adjusting the position of the torch heating means and moving the heating point. Can be improved.

【００３５】[0035]

【発明の効果】本発明によれば、ろう付け対象物の表面
を、トーチ加熱手段によって形成される燃焼炎によって
包み込むことにより、ろう付け中のろう付け対象物の表
面を清浄に保ちつつろう付け作業を実施することがで
き、非接触温度測定手段が観測する部分の表面状態を安
定させ、温度測定の精度を向上させることができる。こ
の測定値を参照し高周波誘導加熱手段の出力を調節しろ
う付け適温に保ち作業を遂行することにより正しい温度
でろう付け作業が実施できるろう付け作業を行うことが
できる。According to the present invention, the surface of the object to be brazed is wrapped with the combustion flame formed by the torch heating means, so that the surface of the object to be brazed during brazing can be kept clean. Work can be performed, the surface state of the portion observed by the non-contact temperature measuring means can be stabilized, and the accuracy of temperature measurement can be improved. By referring to this measured value and adjusting the output of the high-frequency induction heating means to keep the brazing temperature appropriate, the brazing operation can be performed at the correct temperature.

【００３６】また、トーチ加熱手段に供給するガス流量
を非接触温度測定手段の測定したろう付け対象物の温度
を参照しトーチ加熱制御手段で調整することにより、ろ
う付け対象物の状態に応じてガス流量を制御することが
でき清浄する領域，強さをコントロールでき、ろう付け
に適正な表面状態に保つことができ、さらにろう付けの
品質を向上させることができる。Further, the gas flow rate supplied to the torch heating means is adjusted by the torch heating control means by referring to the temperature of the brazing object measured by the non-contact temperature measuring means, so that the gas flow rate can be adjusted according to the state of the brazing object. The flow rate of gas can be controlled, the cleaning area and strength can be controlled, the surface condition suitable for brazing can be maintained, and the quality of brazing can be further improved.

【００３７】また、トーチ加熱手段へ供給するガス流量
とトーチ加熱手段の位置を制御することによりトーチ加
熱手段によって加熱・還元される領域の位置とその効果
をろう付け対象物に合わせて調整することができる。こ
れによりろう付け対象物の接合部近辺の温度を均一に保
ちつつ表面を清浄化することができ高品位なろう付けを
実施することができる。Further, by controlling the flow rate of the gas supplied to the torch heating means and the position of the torch heating means, the position of the region heated / reduced by the torch heating means and its effect can be adjusted according to the object to be brazed. You can As a result, the surface of the object to be brazed can be cleaned while maintaining a uniform temperature in the vicinity of the joint, and high-quality brazing can be performed.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明による高周波誘導加熱によるろう付け装
置の一実施例を示すブロック図。FIG. 1 is a block diagram showing an embodiment of a brazing apparatus by high frequency induction heating according to the present invention.

【図２】ろう付け運転に於ける高周波誘導加熱の出力，
ガス流量の変化を示す特性図。[Fig. 2] Output of high frequency induction heating in brazing operation,
The characteristic view which shows the change of gas flow rate.

【図３】加熱制御手段での処理フローチャート。FIG. 3 is a processing flowchart of a heating control unit.

【図４】本発明による高周波誘導加熱によるろう付け装
置のトーチ加熱制御手段を有する場合の一実施例を示す
ブロック図。FIG. 4 is a block diagram showing an embodiment having a torch heating control means of a brazing apparatus by high frequency induction heating according to the present invention.

【図５】本発明による高周波誘導加熱によるろう付け装
置のトーチ加熱制御手段と位置決め手段を有する場合の
実施例を示すブロック図。FIG. 5 is a block diagram showing an embodiment of a brazing apparatus using high frequency induction heating according to the present invention, which has a torch heating control means and a positioning means.

【図６】赤外線カメラを用いてろう付け対象物の温度，
均一度を測定する場合の均一度算出部での処理フローチ
ャート。FIG. 6 is a temperature of a brazing object using an infrared camera,
7 is a flowchart of processing performed by the uniformity calculating unit when measuring the uniformity.

【符号の説明】[Explanation of symbols]

１ａ，１ｂ…ろう付け対象物、２…加熱コイル、３…高
周波誘導加熱手段電源部、４…トーチ、５…トーチ加熱
手段ガス供給部、６…赤外線放射温度計、７…加熱制御
手段、７ａ…設定値保持部、７ｆ…加熱量算出部、７ｇ
…比較部。1a, 1b ... Brazing object, 2 ... Heating coil, 3 ... High frequency induction heating means power supply section, 4 ... Torch, 5 ... Torch heating means gas supply section, 6 ... Infrared radiation thermometer, 7 ... Heating control means, 7a ... Set value holding unit, 7f ... Heating amount calculation unit, 7g
… Comparison section.

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】金属どうしをろう材により接合する装置に
おいて、 ろう付け対象物を高周波誘導加熱により加熱する高周波
誘導加熱手段と、 上記ろう付け対象物を可燃性ガスの燃焼炎によって加熱
するトーチ加熱手段と、上記ろう付け対象物の温度を測
定する非接触温度測定手段と、上記非接触温度測定手段
の出力を参照して上記高周波誘導加熱手段を制御する加
熱制御手段とを有し、上記トーチ加熱手段より噴出され
る燃焼炎がろう付け対象物の接合部近辺を包み込むよう
にトーチ加熱手段を設置することと、上記非接触温度測
定手段の温度検出領域を上記燃焼炎によってろう付け対
象物表面が還元される領域とすることとを特徴とするろ
う付け装置。1. A device for joining metals together with a brazing material, wherein the brazing object is heated by high frequency induction heating, and the brazing object is heated by a combustion flame of a combustible gas. Means, non-contact temperature measuring means for measuring the temperature of the object to be brazed, and heating control means for controlling the high-frequency induction heating means with reference to the output of the non-contact temperature measuring means, the torch The torch heating means is installed so that the combustion flame ejected from the heating means wraps around the joint of the brazing object, and the temperature detection area of the non-contact temperature measuring means is the surface of the brazing object by the combustion flame. The brazing apparatus is characterized in that the area is reduced. 【請求項２】請求項１において、上記トーチ加熱手段は
上記非接触温度測定手段の出力を参照して上記トーチ加
熱手段を制御するトーチ加熱制御手段を有し、上記トー
チ加熱制御手段は上記非接触温度測定手段で測定された
ろう付け対象物の温度が設定値より低いとき上記トーチ
加熱手段による加熱量を増大させ、測定されたろう付け
対象物の温度が設定値より高いとき上記トーチ加熱手段
による加熱量を低下させるように構成されているろう付
け装置。2. The torch heating means according to claim 1, further comprising a torch heating control means for controlling the torch heating means with reference to an output of the non-contact temperature measuring means, the torch heating control means comprising: When the temperature of the brazing object measured by the contact temperature measuring means is lower than the set value, the heating amount by the torch heating means is increased, and when the temperature of the brazing object measured is higher than the set value, the torch heating means is heated. A brazing device configured to reduce the amount. 【請求項３】請求項１において、上記トーチ加熱手段は
非接触温度測定手段の出力を参照して上記トーチ加熱手
段を制御するトーチ加熱制御手段を有し、 上記トーチ加熱制御手段は非接触温度測定手段で測定さ
れたろう付け対象物の温度がトーチ加熱手段用の設定値
より低いとき上記トーチ加熱手段による加熱量を低い値
にし、測定されたろう付け対象物の温度がトーチ加熱手
段用の設定値より高いとき上記トーチ加熱手段による加
熱量を高い値とするように構成されているろう付け装
置。3. The torch heating means according to claim 1, further comprising a torch heating control means for controlling the torch heating means with reference to an output of the non-contact temperature measuring means, wherein the torch heating control means has a non-contact temperature. When the temperature of the brazing object measured by the measuring means is lower than the set value for the torch heating means, the heating amount by the torch heating means is set to a low value, and the measured temperature of the brazing object is the set value for the torch heating means. A brazing device configured to make the amount of heat by the torch heating means high when the temperature is higher. 【請求項４】請求項１において、金属どうしをろう材に
より接合する装置において、さらに上記トーチ加熱手段
のろう付け対象物に対する位置を任意の場所に定める位
置決め手段を有し、上記トーチ加熱手段は非接触温度測
定手段の出力を入力として上記トーチ加熱手段と上記位
置決め手段を制御するトーチ加熱制御手段を有し、上記
トーチ加熱制御手段は非接触温度測定手段で測定された
ろう付け対象物の温度を参照し上記トーチ加熱手段の位
置，加熱量を調整し、ろう付け対象物の表面が清浄かつ
温度が均一になるように制御するように構成されている
ろう付け装置。4. The apparatus for joining metals together with a brazing material according to claim 1, further comprising a positioning means for setting the position of said torch heating means with respect to the object to be brazed at an arbitrary position, said torch heating means comprising: It has a torch heating control means for controlling the torch heating means and the positioning means with the output of the non-contact temperature measuring means as an input, and the torch heating control means controls the temperature of the brazing object measured by the non-contact temperature measuring means. A brazing apparatus configured to control the position and heating amount of the torch heating means so that the surface of the object to be brazed is clean and the temperature is uniform.
JP468595A 1995-01-17 1995-01-17 Brazing equipment Pending JPH08192262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP468595A JPH08192262A (en) 1995-01-17 1995-01-17 Brazing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP468595A JPH08192262A (en) 1995-01-17 1995-01-17 Brazing equipment

Publications (1)

Publication Number Publication Date
JPH08192262A true JPH08192262A (en) 1996-07-30

Family

ID=11590756

Family Applications (1)

Application Number Title Priority Date Filing Date
JP468595A Pending JPH08192262A (en) 1995-01-17 1995-01-17 Brazing equipment

Country Status (1)

Country Link
JP (1) JPH08192262A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012186398A (en) * 2011-03-08 2012-09-27 Nippon Avionics Co Ltd Joining device
CN107262861A (en) * 2017-06-20 2017-10-20 西安热工研究院有限公司 A kind of method of the stellite alloy film of field brazing turbine blade

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012186398A (en) * 2011-03-08 2012-09-27 Nippon Avionics Co Ltd Joining device
CN107262861A (en) * 2017-06-20 2017-10-20 西安热工研究院有限公司 A kind of method of the stellite alloy film of field brazing turbine blade

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