JPS6197755U - - Google Patents
Info
- Publication number
- JPS6197755U JPS6197755U JP18284584U JP18284584U JPS6197755U JP S6197755 U JPS6197755 U JP S6197755U JP 18284584 U JP18284584 U JP 18284584U JP 18284584 U JP18284584 U JP 18284584U JP S6197755 U JPS6197755 U JP S6197755U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- pipe joint
- input
- peak hold
- signal
- 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
- 238000001514 detection method Methods 0.000 claims description 9
- 230000010355 oscillation Effects 0.000 claims description 2
- 230000005674 electromagnetic induction Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
第１図は本考案に係る管継目検出装置の回路図
、第２図はコールドピルガーミルにおける圧延状
態図、第３図は従来の管継目検出装置の回路図、
第４図はコールドピルガーミルで圧延作業中の先
行素管と後行素管との継目状態図、第５図は同じ
く素管継目の検出信号の模式説明図、第６図は従
来装置の継目検出信号の波形図、第７図は本考案
装置の継目検出信号の説明図である。
１：発振コイル、２，２′：受信コイル、３，
３′：アンプ、４：差動アンプ、５：発振器、６
：掛算器、７：レベルコンパレーター、１０：ブ
リツジ回路、１１，１１′：可変抵抗、１２，１
２′：検出コイル、１３：パワーアンプ、１４：
移相器、１６：同期検波回路、１７：オートバラ
ンス回路、１９：切換スイツチ、２０：ログアン
プ、２１：ピークホールド回路、２２：フイルタ
回路、２３：ピーク判定回路、Ｐ：先行素管、Ｐ
′：後行素管。
Fig. 1 is a circuit diagram of a pipe joint detection device according to the present invention, Fig. 2 is a rolling state diagram in a cold pilger mill, and Fig. 3 is a circuit diagram of a conventional pipe joint detection device.
Figure 4 is a diagram of the state of the joint between the leading and trailing raw tubes during rolling in a cold pilger mill, Figure 5 is a schematic illustration of the detection signal of the raw tube joint, and Figure 6 is a diagram of the conventional equipment. A waveform diagram of the seam detection signal, FIG. 7 is an explanatory diagram of the seam detection signal of the device of the present invention. 1: Oscillation coil, 2, 2': Receiving coil, 3,
3': Amplifier, 4: Differential amplifier, 5: Oscillator, 6
: Multiplier, 7: Level comparator, 10: Bridge circuit, 11, 11': Variable resistor, 12, 1
2': Detection coil, 13: Power amplifier, 14:
Phase shifter, 16: Synchronous detection circuit, 17: Auto balance circuit, 19: Changeover switch, 20: Log amplifier, 21: Peak hold circuit, 22: Filter circuit, 23: Peak judgment circuit, P: Preliminary tube, P
′: Posterior canal.
Claims (1)
イルに到達した管継目を電磁誘導によつて検出す
るセンサーの信号を入力とし、温度ドリフト補正
回路と、被圧延材の間欠的な前後動による信号を
ピークホールドする回路と、該ピークホールド信
号からのピーク位置判定回路とで構成したことを
特徴とするコールドピルガーミルの入口側の管継
目検出装置。 The signal from the sensor that detects the pipe joint by electromagnetic induction is input to a pair of detection coils connected to the oscillation bridge circuit, and the temperature drift correction circuit and the signals from the intermittent back and forth movement of the rolled material are input. 1. A pipe joint detection device on the inlet side of a cold pilger mill, comprising a peak hold circuit and a peak position determination circuit from the peak hold signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18284584U JPS6197755U (en) | 1984-11-30 | 1984-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18284584U JPS6197755U (en) | 1984-11-30 | 1984-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6197755U true JPS6197755U (en) | 1986-06-23 |
Family
ID=30740378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18284584U Pending JPS6197755U (en) | 1984-11-30 | 1984-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6197755U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5263385A (en) * | 1975-10-14 | 1977-05-25 | Kobe Steel Ltd | Method of automatically detecting welded seam of wire |
-
1984
- 1984-11-30 JP JP18284584U patent/JPS6197755U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5263385A (en) * | 1975-10-14 | 1977-05-25 | Kobe Steel Ltd | Method of automatically detecting welded seam of wire |
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