JPH01152254U - - Google Patents
Info
- Publication number
- JPH01152254U JPH01152254U JP5020488U JP5020488U JPH01152254U JP H01152254 U JPH01152254 U JP H01152254U JP 5020488 U JP5020488 U JP 5020488U JP 5020488 U JP5020488 U JP 5020488U JP H01152254 U JPH01152254 U JP H01152254U
- Authority
- JP
- Japan
- Prior art keywords
- heating
- normal part
- radiation sensitivity
- heating power
- infrared radiation
- 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
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 5
- 230000035945 sensitivity Effects 0.000 claims description 5
- 230000007547 defect Effects 0.000 claims description 4
- 230000002950 deficient Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
第１図はこの考案の表面欠陥探傷装置のブロツ
ク図、第２図は正常部検出回路の赤外線放射感度
の信号濃度と正常部信号の関係を示す図、第３図
は加熱パワー補正装置の正常部信号―加熱パワー
補正量特性を示す図、第４図は従来の表面欠陥探
傷装置のブロツク図を示す。
図において、１は被検材、２は被検材１の搬送
方向、３は加熱装置、４は加熱制御装置、５は加
熱制御装置の基準入力、６は赤外線検出器、７は
信号処理回路、８は信号処理回路７の基準入力、
９は正常部検出回路、１０は被検材１の赤外線放
射感度の信号濃度、１１は被検材１の正常部信号
、１２は加熱パワー補正装置、１３は加熱パワー
補正装置１２の加熱パワー補正量をそれぞれ示す
。尚、図中同一あるいは相当部分には同一符号を
付して示している。
Figure 1 is a block diagram of the surface defect detection device of this invention, Figure 2 is a diagram showing the relationship between the signal concentration of the infrared radiation sensitivity of the normal area detection circuit and the normal area signal, and Figure 3 is a diagram showing the normal area signal of the heating power correction device. Fig. 4 shows a block diagram of a conventional surface defect detection device. In the figure, 1 is the material to be tested, 2 is the transport direction of the material to be tested 1, 3 is the heating device, 4 is the heating control device, 5 is the reference input of the heating control device, 6 is the infrared detector, and 7 is the signal processing circuit. , 8 is the reference input of the signal processing circuit 7,
9 is a normal part detection circuit, 10 is a signal concentration of infrared radiation sensitivity of the test material 1, 11 is a normal part signal of the test material 1, 12 is a heating power correction device, and 13 is a heating power correction of the heating power correction device 12. The amount is shown respectively. In the drawings, the same or corresponding parts are denoted by the same reference numerals.
Claims (1)
探傷する表面欠陥探傷装置において、被検材を加
熱する加熱装置と、前記加熱装置の加熱パワーを
制御する加熱制御装置と、被検材の欠陥部の赤外
線放射感度を検出する赤外線検出器と、前記赤外
線検出器の赤外線放射感度により正常部を検出す
る正常部検出回路と、前記正常部検出回路の正常
部信号により加熱制御装置の加熱パワーを補正す
る加熱パワー補正装置と、前記赤外線検出器の出
力信号である被検材の赤外線放射感度を信号処理
する信号処理回路とを具備したことを特徴とする
表面欠陥探傷装置。 A surface defect detection device that continuously detects flaws on the surface of a test material such as a pipe, bar, or plate includes a heating device that heats the test material, a heating control device that controls the heating power of the heating device, and a test object. an infrared detector that detects the infrared radiation sensitivity of a defective part of the material; a normal part detection circuit that detects a normal part by the infrared radiation sensitivity of the infrared detector; and a normal part signal of the normal part detection circuit that controls the heating control device. A surface defect detection device comprising: a heating power correction device for correcting heating power; and a signal processing circuit for processing an infrared radiation sensitivity of the test material, which is an output signal of the infrared detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5020488U JPH01152254U (en) | 1988-04-14 | 1988-04-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5020488U JPH01152254U (en) | 1988-04-14 | 1988-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01152254U true JPH01152254U (en) | 1989-10-20 |
Family
ID=31276269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5020488U Pending JPH01152254U (en) | 1988-04-14 | 1988-04-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01152254U (en) |
-
1988
- 1988-04-14 JP JP5020488U patent/JPH01152254U/ja active Pending
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