JPH07130293A - Non-destructive inspection method for welded member - Google Patents
Non-destructive inspection method for welded memberInfo
- Publication number
- JPH07130293A JPH07130293A JP5272792A JP27279293A JPH07130293A JP H07130293 A JPH07130293 A JP H07130293A JP 5272792 A JP5272792 A JP 5272792A JP 27279293 A JP27279293 A JP 27279293A JP H07130293 A JPH07130293 A JP H07130293A
- Authority
- JP
- Japan
- Prior art keywords
- probe
- nugget diameter
- welded
- resistance value
- measured
- 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
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、例えば陰極線管の色選
別電極や電子銃の製造工程に適用可能な溶接部材の非破
壊検査方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nondestructive inspection method for welding members which can be applied to the manufacturing process of, for example, color selection electrodes for cathode ray tubes and electron guns.
【0002】[0002]
【従来の技術】一般にカラー陰極線管の製造工程におい
ては、色選別電極や電子銃を組み立てるに際し、構成部
材に対するスポット溶接やレーザー溶接が行われる。従
来、このような色選別電極や電子銃の溶接強度は、溶接
部を剥離することにより測定していた。2. Description of the Related Art Generally, in the process of manufacturing a color cathode ray tube, spot welding or laser welding is performed on constituent members when assembling a color selection electrode or an electron gun. Conventionally, the welding strength of such a color selection electrode or electron gun has been measured by peeling the welded portion.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、かかる
従来の方法の場合、溶接部を剥離してナゲット径を測定
していたため、構成部材を破壊しなければならず、その
結果、抜き取り検査となって溶接強度の全数保証を行う
ことができなかった。また、電子銃の継線溶接に関して
は、部材が小さいことから従来は全数の導通チェックに
よる接触状態の確認だけにとどまり、ナゲット径の測定
による溶接強度の判定を全数の電子銃に対して行うこと
はできなかった。However, in the case of such a conventional method, since the welded portion was peeled off and the nugget diameter was measured, the constituent members had to be destroyed, resulting in a sampling inspection. We were unable to guarantee the total welding strength. In addition, regarding wire welding of electron guns, since the members are small, conventionally it is only necessary to check the contact state by all the continuity checks, and the welding strength is determined for all electron guns by measuring the nugget diameter. I couldn't.
【0004】本発明は従来例のかかる点に鑑みてなされ
たもので、その目的とすることろは、溶接された部材を
破壊することなく全数の溶接強度を保証しうる溶接部材
の非破壊検査方法を提供することにある。The present invention has been made in view of the above points of the conventional example, and its purpose is to perform nondestructive inspection of welded members capable of guaranteeing the total welding strength without breaking the welded members. To provide a method.
【0005】[0005]
【課題を解決するための手段】本発明は、例えば図1に
示すように、溶接された部材31,32の溶接部近傍の
一面Sに4端子のプローブ8を当接して抵抗値を測定
し、この部材31,32と同一の部材について予め求め
た抵抗値とナゲット径との関係からこの部材31,32
のナゲット径を算出し、このナゲット径に基づいて溶接
強度の合否を判定するものである。According to the present invention, for example, as shown in FIG. 1, a probe 8 having four terminals is brought into contact with one surface S of the welded members 31 and 32 in the vicinity of the welded portion to measure the resistance value. From the relationship between the resistance value and the nugget diameter obtained in advance for the same member as this member 31, 32,
The nugget diameter is calculated and whether the welding strength is acceptable or not is determined based on the nugget diameter.
【0006】[0006]
【作用】かかる構成を有する本発明によれば、溶接され
た部材31,32の溶接部近傍の抵抗値を測定し、同一
の部材について予め求めた抵抗値とナゲット径との関係
からその部材のナゲット径を算出し、このナゲット径に
基づいて溶接強度の合否を判定することから、溶接され
た部材31,32を破壊することなくナゲット径、ひい
ては溶接強度の合否の判定が可能になる。According to the present invention having such a structure, the resistance values of the welded members 31, 32 in the vicinity of the welded portion are measured, and the resistance value of the same member is determined in advance from the relationship between the resistance value and the nugget diameter. Since the nugget diameter is calculated and the weld strength pass / fail is determined based on the nugget diameter, it is possible to determine the nugget diameter, and thus the weld strength pass / fail, without destroying the welded members 31 and 32.
【0007】[0007]
【実施例】以下、本発明の実施例について図1〜図5を
参照して説明する。Embodiments of the present invention will be described below with reference to FIGS.
【0008】図1は本発明の方法を実施するためのシス
テムの構成を示すものである。同図に示すように、この
システムは、後述の方法により測定した抵抗値を収集し
合格判定を行うコンピュータ1を備えている。このコン
ピュータ1は、抵抗値を測定するデジタルマイクロオー
ムメーター(例えばTecrad社製、DMO−350
等)3とインターフェース2(例えばRS−232等)
によって接続される。また、コンピュータ1は、システ
ムを制御するためのシーケンスコントローラ23とプロ
ーブ8,15,18,21を切り替えるプローブ切替器
5とにI/Oケーブル22によって接続されている。FIG. 1 shows the configuration of a system for carrying out the method of the present invention. As shown in the figure, this system includes a computer 1 that collects resistance values measured by a method described below and determines acceptance. This computer 1 is a digital micro ohm meter (for example, Tecrad DMO-350) for measuring a resistance value.
Etc.) 3 and interface 2 (eg RS-232 etc.)
Connected by. The computer 1 is also connected by an I / O cable 22 to a sequence controller 23 for controlling the system and a probe switch 5 for switching the probes 8, 15, 18, 21.
【0009】デジタルマイクロオームメーター3は、測
定用ケーブル4によってプローブ切替器5の各接点6,
13,16,19に接続されている。この場合、接点6
は、測定用ケーブル7によって第1プローブ8に接続さ
れる。また、接点13,16及び19は、測定用ケーブ
ル14,17及び20によってそれぞれ第2,第3及び
第4プローブ15,18,21に接続されている。The digital micro ohm meter 3 is provided with a measuring cable 4 for connecting the contacts 6 of the probe switching device 5 to each other.
It is connected to 13, 16, and 19. In this case, contact 6
Is connected to the first probe 8 by a measuring cable 7. Further, the contacts 13, 16 and 19 are connected to the second, third and fourth probes 15, 18, 21 by measuring cables 14, 17 and 20, respectively.
【0010】第1プローブ8には、定電流を流すための
ピン9,12と電位差を測定するためのピン10,11
とが等間隔に設けられている。また、図示はしないが、
第2〜第4プローブ15,18,21にも第1プローブ
8と同様の定電流用ピン及び電位差測定用ピンが設けら
れている。The first probe 8 has pins 9 and 12 for supplying a constant current and pins 10 and 11 for measuring a potential difference.
And are provided at equal intervals. Also, although not shown,
The second to fourth probes 15, 18 and 21 are also provided with the constant current pin and the potential difference measuring pin similar to the first probe 8.
【0011】次に、本実施例の方法によるナゲット径の
測定原理について説明する。図3Aは、陰極線管におけ
る色選別電極のフレーム32とホルダー31の溶接状態
を示すもので、斜線で示す部分33が溶接された部分で
ある。ここで、図3Aに示すホルダー31をフレーム3
2から剥離すると、図3Bに示すようにナゲット36が
残り、フレーム32とナゲット36の接合面の直径Xが
ナゲット径となる。Next, the principle of measuring the nugget diameter by the method of this embodiment will be described. FIG. 3A shows a welded state of the frame 32 of the color selection electrode and the holder 31 in the cathode ray tube, and a hatched portion 33 is a welded portion. Here, the holder 31 shown in FIG.
When peeled from 2, the nugget 36 remains as shown in FIG. 3B, and the diameter X of the joint surface between the frame 32 and the nugget 36 becomes the nugget diameter.
【0012】図3Cは、ナゲット36を上方から見たも
ので、実測するナゲット径Zは同図の横方向の直径Xと
縦方向の直径Yの測定値を加算して2で割った値であ
る。FIG. 3C is a view of the nugget 36 seen from above, and the actually measured nugget diameter Z is a value obtained by adding the measured values of the diameter X in the horizontal direction and the diameter Y in the vertical direction and dividing by two. is there.
【0013】図4は、上述のホルダー31とフレーム3
2の溶接の際の抵抗値とナゲット径の関係を示すグラフ
である。このグラフは、14個の大きさ(ナゲット径)
の異なる資料を作成し、図1に示す抵抗値測定システム
で抵抗値を測定し、図3A,Bに示すようにホルダー3
1を剥離してナゲット径Zを測定し、両者の相関関係を
グラフ化したものである。FIG. 4 shows the holder 31 and the frame 3 described above.
It is a graph which shows the resistance value at the time of welding of No. 2, and a nugget diameter. This graph shows 14 sizes (nugget diameter)
Different materials are prepared, the resistance value is measured by the resistance value measuring system shown in FIG. 1, and the holder 3 is attached as shown in FIGS. 3A and 3B.
1 is peeled off, the nugget diameter Z is measured, and the correlation between the two is graphed.
【0014】図4から理解されるように、ナゲット径Z
が小さい程抵抗値は大きく、ナゲット径Zが大きい程抵
抗値は小さくなる。例えば図3に示すフレーム32とホ
ルダー31の場合、フレーム32とホルダー31の溶接
強度はナゲット径が5mm以上であれば保証できる規格
になっているため、図4のナゲット径5mm以下を示す
破線bと実測値を示す実線aが交わる点の抵抗値(一点
鎖線cで示す抵抗値)以下の抵抗値であればナゲット径
Zが5mm以上は保証でき、所望の溶接強度が得られて
いることになる。As can be seen from FIG. 4, the nugget diameter Z
Is smaller, the resistance value is larger, and as the nugget diameter Z is larger, the resistance value is smaller. For example, in the case of the frame 32 and the holder 31 shown in FIG. 3, since the welding strength of the frame 32 and the holder 31 is a standard that can be guaranteed if the nugget diameter is 5 mm or more, the broken line b indicating the nugget diameter of 5 mm or less in FIG. If the resistance value is equal to or lower than the resistance value (the resistance value indicated by the one-dot chain line c) where the solid line a indicating the measured value intersects, the nugget diameter Z can be guaranteed to be 5 mm or more, and the desired welding strength can be obtained. Become.
【0015】次に、本実施例の方法を用い、実際に溶接
した部材の合否判定をする場合の動作について図2を参
照して説明する。この場合、図4のグラフに基づき、ナ
ゲット径Zが5mmの場合の抵抗値を合格基準抵抗値と
する。Next, the operation in the case of making a pass / fail judgment of an actually welded member using the method of this embodiment will be described with reference to FIG. In this case, based on the graph of FIG. 4, the resistance value when the nugget diameter Z is 5 mm is set as the acceptance reference resistance value.
【0016】まず、管種サイズ選択スイッチ(図示せ
ず)を例えば25インチにしてオンすると、管種サイズ
が25インチに位置決めされる(ステップ1,2)。そ
して、管種サイズの位置決めが完了した時点でコンピュ
ータに管種コードを送信する(ステップ3)。尚、何ら
かのトラブルによって管種サイズの位置決めが完了しな
かった場合には、管種サイズ位置決めエラー表示を行い
(ステップ18)、トラブルが発生したとして動作を停
止する(ステップ19)。First, when a tube type size selection switch (not shown) is turned on, for example, at 25 inches, the tube type size is positioned at 25 inches (steps 1 and 2). Then, when the positioning of the tube type size is completed, the tube type code is transmitted to the computer (step 3). If the positioning of the pipe type size is not completed due to some trouble, a pipe type size positioning error is displayed (step 18), and the operation is stopped because a trouble occurs (step 19).
【0017】その後、自動スイッチ(図示せず)をオン
にし(ステップ4)、自動モード動作状態にする(ステ
ップ5)。そして、起動スイッチ(図示せず)をオンに
し(ステップ6)、プローブ切替器5の接点6を動作し
て第1プローブ8をデジタルオームメーター3に接続す
る(ステップ7)。After that, an automatic switch (not shown) is turned on (step 4) and the automatic mode operation state is set (step 5). Then, a start switch (not shown) is turned on (step 6), the contact 6 of the probe switch 5 is operated, and the first probe 8 is connected to the digital ohm meter 3 (step 7).
【0018】次に、第1プローブ8を測定ポイント(溶
接部の近傍)に移動し、図1に示すように各ピン9〜1
2をホルダー31の測定面Sに接触させ、位置決め動作
を行う(ステップ8)。そして、第1プローブ8の位置
決めが完了した場合には、第1プローブ8を用いて抵抗
値を測定し、その測定値の信号をコンピュータ1に送信
する(ステップ9〜12)。この場合、図1に示すよう
に、ピン9,12間に定電流34を流し、これらの内側
に位置するピン10,11によって電位差を測定する
(定電流4端子測定法)。尚、かかる方法によれば、ピ
ン9〜12と測定面Sとの接触抵抗は無視できる。ま
た、各プローブ8,15,18,21の各ピン間隔は統
一されているため、プローブによる測定誤差はないもの
とする。Next, the first probe 8 is moved to the measurement point (near the welded portion), and as shown in FIG.
2 is brought into contact with the measurement surface S of the holder 31 to perform the positioning operation (step 8). Then, when the positioning of the first probe 8 is completed, the resistance value is measured using the first probe 8 and the signal of the measured value is transmitted to the computer 1 (steps 9 to 12). In this case, as shown in FIG. 1, a constant current 34 is passed between the pins 9 and 12, and the potential difference is measured by the pins 10 and 11 located inside these (constant current four-terminal measurement method). According to this method, the contact resistance between the pins 9 to 12 and the measuring surface S can be ignored. Further, since the pin intervals of the probes 8, 15, 18, 21 are unified, it is assumed that there is no measurement error due to the probes.
【0019】他方、何らかの原因により第1プローブ8
の位置決めが完了しなかった場合には、第1プローブ8
の位置決めエラー表示を行い(ステップ20)、トラブ
ルが生じたとして動作を停止する(ステップ21)。ま
た、何らかの原因により第1プローブ8による測定が完
了しなかった場合にも、第1プローブ8の測定エラー表
示を行い(ステップ22)、トラブルが生じたとして動
作を停止する(ステップ23)。On the other hand, for some reason, the first probe 8
If the positioning of the first probe 8 is not completed,
The positioning error is displayed (step 20), and the operation is stopped because trouble has occurred (step 21). Further, even if the measurement by the first probe 8 is not completed for some reason, the measurement error of the first probe 8 is displayed (step 22), and the operation is stopped because a trouble occurs (step 23).
【0020】コンピュータ1においては、この測定値と
図4に基づいて算出した合格基準値とを比較し、合格基
準値と等しいか又は合格基準値より測定値が小さければ
合格とする(ステップ13)。その一方、合格基準値よ
り測定値の方が大きい場合には、不合格としてモニター
に不良表示を行う(ステップ24)。In the computer 1, the measured value is compared with the pass reference value calculated based on FIG. 4, and if the pass reference value is equal to or smaller than the pass reference value, the pass is accepted (step 13). . On the other hand, when the measured value is larger than the pass standard value, it is judged as a failure and a defect is displayed on the monitor (step 24).
【0021】このようにして第1プローブ8による測定
が終了すると、プローブ切替器5を動作して第2プロー
ブ15に切り替え(ステップ14)、上述の測定動作a
1と同様の測定動作a2を行う。さらに、順次第3プロ
ーブ18、第4プローブ21に切り替え(ステップ1
5,16)、上述した測定動作a1と同様の測定動作a
3,a4を行う。そして、第4プローブ21による測定
が終了した時点で1サイクルの測定を終了し(ステップ
17)、起動スイッチをオンにした状態に戻す(ステッ
プ6)。When the measurement by the first probe 8 is completed in this way, the probe switch 5 is operated to switch to the second probe 15 (step 14), and the above-mentioned measurement operation a is performed.
The measurement operation a2 similar to 1 is performed. Furthermore, the third probe 18 and the fourth probe 21 are sequentially switched (step 1
5, 16), a measurement operation a similar to the measurement operation a1 described above.
3 and a4 are performed. Then, when the measurement by the fourth probe 21 is completed, the measurement for one cycle is completed (step 17), and the start switch is returned to the ON state (step 6).
【0022】以上述べたように本実施例の方法の場合、
デジタルマイクロオームメーター3を用いてナゲット部
の抵抗値を測定してそれを解析するものであることか
ら、部品を破壊(剥離)することなくナゲット径の大き
さ即ち溶接強度を判別することができる。その結果、溶
接部品の全数検査による品質保証が可能になる。As described above, in the case of the method of this embodiment,
Since the resistance value of the nugget portion is measured using the digital micro ohm meter 3 and analyzed, the size of the nugget diameter, that is, the welding strength can be determined without breaking (peeling) the part. . As a result, quality assurance by 100% inspection of welded parts becomes possible.
【0023】次に、本発明の他の実施例について図5を
参照して説明する。尚、上記実施例と対応する部分には
同一の符号を付して説明する。Next, another embodiment of the present invention will be described with reference to FIG. Incidentally, the same reference numerals are given to the portions corresponding to those in the above-mentioned embodiment for explanation.
【0024】本実施例は、陰極線管の電子銃の継線溶接
部の抵抗値を測定する場合に用いられるものである。図
5に示すように、本実施例に係る装置においては、上述
のプローブ8,15,18,21を2つに分割したプロ
ーブ25,28を使用する。この場合、プローブ25に
は定電流用のピン26と電位差測定用のピン27が設け
られている。一方、プローブ28にも、同様に電位差測
定用のピン29と定電流用のピン30が設けられてい
る。そして、プローブ25とプローブ28とは端子24
において電気的に接続され、さらにこれらは上述のプロ
ーブ切替器5を介してデジタルオームメーター3に接続
されている。さらに、プローブ25,28同士の間隔は
一定となるように不図示の固定手段によって固定されて
いる。The present embodiment is used when measuring the resistance value of a wire welded portion of an electron gun of a cathode ray tube. As shown in FIG. 5, in the device according to the present embodiment, the probes 25, 28 obtained by dividing the above-mentioned probes 8, 15, 18, 21 into two are used. In this case, the probe 25 is provided with a pin 26 for constant current and a pin 27 for measuring potential difference. On the other hand, the probe 28 is similarly provided with a pin 29 for measuring a potential difference and a pin 30 for constant current. The probe 25 and the probe 28 are connected to the terminal 24.
In the above, they are electrically connected to each other, and these are further connected to the digital ohmmeter 3 via the above-mentioned probe switching device 5. Further, the probes 25, 28 are fixed by a fixing means (not shown) so that the distance between them is constant.
【0025】そして、かかる構成を有する装置を用いて
電子銃の第5グリッド(G5)36とHコネクター37
の溶接状態を検査するには、例えば次ような抵抗値の測
定を行う。Then, the fifth grid (G5) 36 of the electron gun and the H connector 37 are formed by using the apparatus having the above structure.
In order to inspect the welding state of, the following resistance value is measured, for example.
【0026】まず、本実施例においても、上述した管種
サイズ選択等の動作を行う。そして、プローブ25,2
8の位置決めを行う。この場合、第5グリッド36の表
面に一方のプローブ25のピン26,27を接触させ、
他方のプローブ28のピン29,30をHコネクター3
7の表面に接触させる。First, also in this embodiment, operations such as the above-mentioned tube type size selection are performed. And the probes 25, 2
Position 8 In this case, the pins 26 and 27 of the one probe 25 are brought into contact with the surface of the fifth grid 36,
Connect the pins 29 and 30 of the other probe 28 to the H connector 3
Contact the surface of 7.
【0027】その後、各プローブ25,28の定電流用
のピン26,30間に一定の電流を流し、電位差測定用
のピン27,29間の電位差を測定する。After that, a constant current is passed between the constant current pins 26 and 30 of the probes 25 and 28 to measure the potential difference between the potential difference measurement pins 27 and 29.
【0028】さらに、その測定データ信号をコンピュー
タ1に送信し、上述したように、実測により予め設定し
た合格基準値に基づいて合否判断を行う。その他の構成
及び作用については上記実施例と同一であるので詳細な
説明を省略する。Further, the measurement data signal is transmitted to the computer 1, and as described above, the pass / fail judgment is made based on the pass standard value preset by actual measurement. Other configurations and operations are the same as those of the above-described embodiment, and detailed description thereof will be omitted.
【0029】尚、本発明は上述の実施例に限られるもの
ではなく、種々の改変を行うことができる。例えば、抵
抗値を測定するためのプローブの数は測定する溶接部の
数に応じて増減することもできる。この場合、溶接部の
数とプローブの数を等しくしておけば、第1の実施例の
ようにプローブの接続を切り替えることにより効率良く
測定動作を行うことができる。この点については、電子
銃の継線溶接の抵抗値を測定する第2の実施例の場合も
同様である。さらに、プローブが1つの場合にはプロー
ブ切替器を介さずにプローブとデジタルマイクロオーム
メーターとを直接接続することもできる。The present invention is not limited to the above-mentioned embodiments, but various modifications can be made. For example, the number of probes for measuring the resistance value can be increased or decreased according to the number of welds to be measured. In this case, if the number of welded portions and the number of probes are equal, the measurement operation can be efficiently performed by switching the connection of the probes as in the first embodiment. This point is the same as in the case of the second embodiment in which the resistance value of the wire welding of the electron gun is measured. Further, in the case of one probe, the probe and the digital micro ohm meter can be directly connected without using the probe switch.
【0030】[0030]
【発明の効果】以上述べたように本発明によれば、溶接
された部材の溶接部近傍の抵抗値を測定し、同一の部材
について予め求めた抵抗値とナゲット径との関係からそ
の部材のナゲット径を算出し、このナゲット径に基づい
て溶接強度の合否を判定することから、溶接された部材
を破壊することなく溶接強度の合否判定ができ、その結
果、溶接部材の全数検査が可能になり、製品、特に陰極
線管の信頼性を向上させることができる。また、本発明
によれば、スポット溶接、レーザー溶接等を問わず溶接
強度の合否判定ができる。さらに、本発明によれば、従
来困難であった電子銃の継線溶接についても溶接強度の
合否判定を全数に対して行うことができる。As described above, according to the present invention, the resistance value of a welded member in the vicinity of the welded portion is measured, and the resistance value and the nugget diameter of the same member are calculated in advance from the relationship between the members. By calculating the nugget diameter and determining the weld strength pass / fail based on this nugget diameter, the weld strength pass / fail determination can be made without destroying the welded members, and as a result, it is possible to inspect all welded members. Therefore, the reliability of the product, especially the cathode ray tube can be improved. Further, according to the present invention, the pass / fail judgment of welding strength can be performed regardless of spot welding, laser welding, or the like. Further, according to the present invention, it is possible to perform pass / fail judgment of welding strength for all of the wire welding of electron guns, which has been difficult in the past.
【図1】本発明を実施するためのシステムの構成例を示
すブロック図である。FIG. 1 is a block diagram showing a configuration example of a system for carrying out the present invention.
【図2】本発明の方法の具体的な実施例を示すフローチ
ャートである。FIG. 2 is a flow chart showing a specific embodiment of the method of the present invention.
【図3】溶接部分におけるナゲットを示す説明図であ
る。FIG. 3 is an explanatory diagram showing a nugget in a welded portion.
【図4】抵抗値とナゲット径との関係を示すグラフ(実
測値)である。FIG. 4 is a graph (actually measured value) showing a relationship between a resistance value and a nugget diameter.
【図5】プローブの他の例を示す構成図である。FIG. 5 is a configuration diagram showing another example of a probe.
1 コンピュータ 3 デジタルマイクロオームメーター 5 プローブ切替器 8 第1プローブ 15 第2プローブ 18 第3プローブ 21 第4プローブ 31 ホルダー 32 フレーム 33 溶接された部分 36 ナゲット 1 Computer 3 Digital Micro-Ohm Meter 5 Probe Switcher 8 First Probe 15 Second Probe 18 Third Probe 21 Fourth Probe 31 Holder 32 Frame 33 Welded Part 36 Nugget
Claims (1)
端子のプローブを当接して抵抗値を測定し、上記部材と
同一の部材について予め求めた抵抗値とナゲット径との
関係から当該部材のナゲット径を算出し、このナゲット
径に基づいて溶接強度の合否を判定することを特徴とす
る溶接部材の非破壊検査方法。1. A surface of a welded member in the vicinity of a welded portion
The resistance value is measured by abutting the probe of the terminal, the nugget diameter of the member is calculated from the relationship between the resistance value and the nugget diameter previously obtained for the same member as the above member, and the welding strength of the nugget diameter is calculated based on the nugget diameter. A nondestructive inspection method for a welded member, characterized by determining pass / fail.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5272792A JPH07130293A (en) | 1993-10-29 | 1993-10-29 | Non-destructive inspection method for welded member |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5272792A JPH07130293A (en) | 1993-10-29 | 1993-10-29 | Non-destructive inspection method for welded member |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07130293A true JPH07130293A (en) | 1995-05-19 |
Family
ID=17518810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5272792A Pending JPH07130293A (en) | 1993-10-29 | 1993-10-29 | Non-destructive inspection method for welded member |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07130293A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6986288B2 (en) | 2003-01-15 | 2006-01-17 | Yazaki Corporation | Method for evaluating a welded part |
JP2008241419A (en) * | 2007-03-27 | 2008-10-09 | Denshi Jiki Kogyo Kk | Method and device for measuring nugget diameter |
JP2008254005A (en) * | 2007-04-02 | 2008-10-23 | Denshi Jiki Kogyo Kk | Spot welding strength evaluation method and apparatus |
KR100982503B1 (en) * | 2008-09-11 | 2010-09-16 | 김요성 | Evaluation Apparatus for Spot Welding Strength |
WO2011016193A1 (en) | 2009-08-01 | 2011-02-10 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Resistance welding method, resistance welder, and method and device for evaluating resistance welding |
JP2013099758A (en) * | 2011-11-08 | 2013-05-23 | Honda Motor Co Ltd | Resistance welding method and device for the same |
WO2018127503A1 (en) * | 2017-01-05 | 2018-07-12 | Newfrey Llc | Method for evaluating a welded joint and welded-joint evaluation device |
WO2023063083A1 (en) * | 2021-10-11 | 2023-04-20 | 日置電機株式会社 | Measuring device, measuring system, and measuring method |
-
1993
- 1993-10-29 JP JP5272792A patent/JPH07130293A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6986288B2 (en) | 2003-01-15 | 2006-01-17 | Yazaki Corporation | Method for evaluating a welded part |
JP2008241419A (en) * | 2007-03-27 | 2008-10-09 | Denshi Jiki Kogyo Kk | Method and device for measuring nugget diameter |
JP2008254005A (en) * | 2007-04-02 | 2008-10-23 | Denshi Jiki Kogyo Kk | Spot welding strength evaluation method and apparatus |
KR100982503B1 (en) * | 2008-09-11 | 2010-09-16 | 김요성 | Evaluation Apparatus for Spot Welding Strength |
WO2011016193A1 (en) | 2009-08-01 | 2011-02-10 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Resistance welding method, resistance welder, and method and device for evaluating resistance welding |
US8779320B2 (en) | 2009-08-01 | 2014-07-15 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Resistance welding method, resistance welder, and method and device for evaluating resistance welding |
JP2013099758A (en) * | 2011-11-08 | 2013-05-23 | Honda Motor Co Ltd | Resistance welding method and device for the same |
WO2018127503A1 (en) * | 2017-01-05 | 2018-07-12 | Newfrey Llc | Method for evaluating a welded joint and welded-joint evaluation device |
WO2023063083A1 (en) * | 2021-10-11 | 2023-04-20 | 日置電機株式会社 | Measuring device, measuring system, and measuring method |
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