JPH027556U - - Google Patents
Info
- Publication number
- JPH027556U JPH027556U JP8617988U JP8617988U JPH027556U JP H027556 U JPH027556 U JP H027556U JP 8617988 U JP8617988 U JP 8617988U JP 8617988 U JP8617988 U JP 8617988U JP H027556 U JPH027556 U JP H027556U
- Authority
- JP
- Japan
- Prior art keywords
- spangle
- hot
- steel sheet
- galvanized steel
- dip galvanized
- 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 2
- 229910001335 Galvanized steel Inorganic materials 0.000 claims 2
- 239000008397 galvanized steel Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Coating With Molten Metal (AREA)
Description
第1図は実施例に用いた装置の構成図、第2図
は考案の原理を示す反射光信号の比較図、第3図
は検出の原理を示す微分信号図である。
1……被検査材、2……ロール、3……投光器
、4……受光器、5……増幅器、6……微分回路
、7……コンパレーター。
FIG. 1 is a block diagram of the apparatus used in the example, FIG. 2 is a comparison diagram of reflected light signals showing the principle of the invention, and FIG. 3 is a differential signal diagram showing the principle of detection. 1... material to be inspected, 2... roll, 3... emitter, 4... light receiver, 5... amplifier, 6... differential circuit, 7... comparator.
Claims (1)
投光面各部の反射光を受光する受光器と、前記受
光器の信号により溶融亜鉛鍍金鋼板の表面反射む
らを算定する手段と、表面反射むらが規定値より
大きいときスパングル生成信号を発する比較手段
とを有してなるスパングル検出装置。 A floodlight that illuminates the surface of the hot-dip galvanized steel sheet,
A light receiver that receives reflected light from each part of the light projection surface, means for calculating surface reflection unevenness of the hot-dip galvanized steel sheet based on signals from the light receiver, and comparison means that issues a spangle generation signal when the surface reflection unevenness is larger than a specified value. A spangle detection device comprising:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8617988U JPH027556U (en) | 1988-06-29 | 1988-06-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8617988U JPH027556U (en) | 1988-06-29 | 1988-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH027556U true JPH027556U (en) | 1990-01-18 |
Family
ID=31310824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8617988U Pending JPH027556U (en) | 1988-06-29 | 1988-06-29 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH027556U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005221283A (en) * | 2004-02-04 | 2005-08-18 | Jfe Steel Kk | Surface irregularity measuring/evaluating method and system, surface irregularity evaluation device, and program of surface irregularity measuring/evaluating method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5421759A (en) * | 1977-07-19 | 1979-02-19 | Sumitomo Metal Ind | Method of measuring generating condition of spangle of zinc plated steel plate and its device |
-
1988
- 1988-06-29 JP JP8617988U patent/JPH027556U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5421759A (en) * | 1977-07-19 | 1979-02-19 | Sumitomo Metal Ind | Method of measuring generating condition of spangle of zinc plated steel plate and its device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005221283A (en) * | 2004-02-04 | 2005-08-18 | Jfe Steel Kk | Surface irregularity measuring/evaluating method and system, surface irregularity evaluation device, and program of surface irregularity measuring/evaluating method |
JP4534507B2 (en) * | 2004-02-04 | 2010-09-01 | Jfeスチール株式会社 | Surface unevenness measurement / evaluation method and system, surface unevenness evaluation apparatus, and surface unevenness measurement / evaluation method program |
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