JPS627064U - - Google Patents
Info
- Publication number
- JPS627064U JPS627064U JP9783585U JP9783585U JPS627064U JP S627064 U JPS627064 U JP S627064U JP 9783585 U JP9783585 U JP 9783585U JP 9783585 U JP9783585 U JP 9783585U JP S627064 U JPS627064 U JP S627064U
- Authority
- JP
- Japan
- Prior art keywords
- metal material
- excitation signal
- detecting
- detection
- signal output
- 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
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
第１図は、本考案に係る渦電流式の溶接部検出
装置の実施例の構成を示す、一部断面図を含むブ
ロツク線図、第２図は、前記実施例が連続焼鈍ラ
インに配設されている状態を示す断面図、第３図
は、前記実施例の鋼板に対するセンサの配置を示
す平面図、第４図は、従来の溶接点検出装置の構
成例を示す、一部断面図を含むブロツク線図、第
５図Ａ，Ｂは、鋼板の溶接部を渦電流により検出
する際の検出感度を示す線図である。
１０…鋼板、１２…溶接部、１６Ａ…信号処理
器、１８Ａ…正弦波発振回路、２９Ａ，２９Ｂ…
同期検波回路、５０…励磁周波数切替器、５２Ａ
，５２Ｂ…検波角切替器。
FIG. 1 is a block diagram including a partial cross-sectional view showing the configuration of an embodiment of the eddy current type weld detection device according to the present invention, and FIG. 2 shows the arrangement of the embodiment in a continuous annealing line. FIG. 3 is a plan view showing the arrangement of sensors with respect to the steel plate of the above embodiment, and FIG. 4 is a partial sectional view showing an example of the configuration of a conventional welding point detection device. The block diagrams included in FIGS. 5A and 5B are diagrams showing the detection sensitivity when detecting a welded portion of a steel plate using an eddy current. DESCRIPTION OF SYMBOLS 10... Steel plate, 12... Welding part, 16A... Signal processor, 18A... Sine wave oscillation circuit, 29A, 29B...
Synchronous detection circuit, 50...Excitation frequency switch, 52A
, 52B...Detection angle switch.
Claims (1)
により、該金属材の溶接部を検出する、金属材の
溶接部検出装置において、 金属材に渦電流を励磁するための、周波数が変
更可能とされた励磁信号を出力する励磁信号出力
手段と、 該励磁信号出力手段から出力される励磁信号の
周波数を、前記金属材の溶接部の種類に応じて変
更する励磁周波数切替手段と、 前記金属材で発生した渦電流の検出信号を検波
して、該金属材の溶接部を検出するための、検波
角が変更可能とされた検波手段と、 該検波手段の検波角を、前記金属材の溶接部の
種類に応じて変更する検波角切替手段と、 を備えたことを特徴とする金属材の溶接部検出装
置。 (2) 前記励磁信号出力手段の出力する励磁信号
が、正弦波である実用新案登録請求の範囲第１項
記載の金属材の溶接部検出装置。[Scope of Claim for Utility Model Registration] (1) In a metal material weld detection device that detects a weld in a metal material by measuring eddy current generated in the metal material, excitation signal output means for outputting an excitation signal whose frequency can be changed for excitation; and changing the frequency of the excitation signal output from the excitation signal output means according to the type of the welded part of the metal material. excitation frequency switching means for detecting a detection signal of an eddy current generated in the metal material and detecting a welded portion of the metal material, the detection means having a changeable detection angle; A detecting device for detecting a welded part of a metal material, comprising: a detection angle switching means for changing the detection angle of the detection angle according to the type of the welded part of the metal material. (2) The device for detecting a welded part of a metal material according to claim 1, wherein the excitation signal outputted by the excitation signal output means is a sine wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9783585U JPS627064U (en) | 1985-06-27 | 1985-06-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9783585U JPS627064U (en) | 1985-06-27 | 1985-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS627064U true JPS627064U (en) | 1987-01-16 |
Family
ID=30965199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9783585U Pending JPS627064U (en) | 1985-06-27 | 1985-06-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS627064U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220027522A (en) * | 2020-08-27 | 2022-03-08 | 주식회사 해동엔지니어링 | Discrimination device of connection part |
-
1985
- 1985-06-27 JP JP9783585U patent/JPS627064U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220027522A (en) * | 2020-08-27 | 2022-03-08 | 주식회사 해동엔지니어링 | Discrimination device of connection part |
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