JPS59143907A - Method for measuring surface roughness of steel plate - Google Patents
Method for measuring surface roughness of steel plateInfo
- Publication number
- JPS59143907A JPS59143907A JP1751683A JP1751683A JPS59143907A JP S59143907 A JPS59143907 A JP S59143907A JP 1751683 A JP1751683 A JP 1751683A JP 1751683 A JP1751683 A JP 1751683A JP S59143907 A JPS59143907 A JP S59143907A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- surface roughness
- roughness
- operator
- calculator
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
- G01B11/303—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces using photoelectric detection means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はレーザー光線の反射強度を信号処理して走行中
の鋼板又はロールの表面粗さを連続的に測定する方法に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for continuously measuring the surface roughness of a running steel plate or roll by signal processing the reflected intensity of a laser beam.
一般に冷延鋼板は焼鈍時の焼付き防止や、摩擦係数の付
与、塗装密着性の向上などのために、所定の表面粗さを
満足すべきロールを使い分Ｌ３で、適当な表面粗さを圧
延時に付与する。In general, cold-rolled steel sheets are rolled to prevent seizure during annealing, provide a friction coefficient, and improve paint adhesion by using rolls that satisfy a predetermined surface roughness. Applied during rolling.
この表面粗さは、租ずぎると表面光沢、１栄えが劣り逆
に細かすぎると焼鈍時の焼付き、リコイリング時の鋼板
スリップ、塗装密着性の低下に影響を与える。If the surface roughness is too rough, the surface gloss and finish will be poor, and if it is too fine, it will affect seizure during annealing, slippage of the steel plate during recoiling, and a decrease in paint adhesion.
そこで表面粗さが適当なものであるか否かを判断するた
めに１４板表面やロール表面の粗さを測定することが必
要である。Therefore, in order to determine whether the surface roughness is appropriate, it is necessary to measure the roughness of the 14 plate surface or roll surface.
従来鋼板表面やロール表面の粗さを測定する場合接触式
の表面粗さ測定計を使用してｊ５こなっていたため、運
転状態すなわち鋼板又はロールか走行している状態で表
面の粗さを連続的に測定することは不可能であった。Conventionally, contact-type surface roughness measuring meters were used to measure the roughness of steel plate surfaces or roll surfaces. It was impossible to measure it exactly.
それ数本発明の目的は、圧延中に連続して鋼板の表面粗
さを測定することにより、所望の粗さ範囲内に、圧延さ
れたξ１旧反の表面粗さを管理できることを可能にする
鋼板の表面粗さ測定法を提（ハすることにある。An object of the present invention is to make it possible to control the surface roughness of the rolled ξ1 old sheet within a desired roughness range by continuously measuring the surface roughness of the steel sheet during rolling. The purpose of this paper is to propose a method for measuring the surface roughness of steel plates.
本発明によれは、鋼板の表面にレーザー光線をあて、鋼
板の表面で反射したレーザー光線を光電管で受けて電気
信号に変換した後低周波成分をバンドパスフィルターに
て除去し、この信号を平均粗さ演算器、最大山高さ演算
器、山数／１ｉｌｉ算器の各々へ入力し、前記演算器の
各々からの出力を表示器および記録計の各々へ入力し、
鋼板の表面粗さを連続的に測定することを特徴とする測
定法が提供される。According to the present invention, a laser beam is applied to the surface of a steel plate, and the laser beam reflected from the surface of the steel plate is received by a phototube and converted into an electrical signal.The low frequency component is removed by a band pass filter, and this signal is converted into an average roughness. Input to each of the calculator, maximum peak height calculator, and number of peaks/1ili calculator, input the output from each of the calculators to each of the display and recorder,
A measuring method is provided that is characterized by continuously measuring the surface roughness of a steel plate.
なお本発明の測定法と類似の測定法として、レーザー光
線反射強度の中方向分布強度を測定し、この分布状況に
より鋼板の表面粗さを測定すにる方法が提案されている
。しかし、この方法は光電管を１＞方向への移動させる
必要があり、装置とその移動精度をだすために全体が複
雑になるという欠点を有している。As a measuring method similar to the measuring method of the present invention, a method has been proposed in which the intermediate distribution intensity of laser beam reflection intensity is measured and the surface roughness of a steel plate is measured based on this distribution. However, this method has the disadvantage that it is necessary to move the phototube in the 1> direction, and that the entire device becomes complicated in order to achieve the accuracy of the device and its movement.
以下添付図面を参照して本発明の好ましい実施例につい
て説明する。Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図は本発明の表面粗さ測定法を調質圧延ミルに適用
した場合について概略的に表示したものである。図中参
照番号１〜５ばそれぞれレーザー光線源、光電管、デフ
レフロール、鋼板、パルスジェネレーターを示している
。まず、レーデ−光線源１からのヘリウム−ネオンし・
−ザーを走行中の鋼板４へあて、反射したレーザー光線
を光電管２で受けて電気信号に変換する。この電気信号
はバンドパスフィルター６を通してその低周波成分を除
去される。その結果ｉＭられた信号は平均粗さくＲａ）
演算器７、最大山高さくＲｍａｘ）演算器８、山数（Ｐ
Ｐｉ ）演算器９の各々へ送られ信号処理される。各演
算器７．８．９からの出力信号は記録計１０および表示
器１１の各々へ入力される。FIG. 1 schematically shows the case where the surface roughness measuring method of the present invention is applied to a temper rolling mill. Reference numbers 1 to 5 in the figure indicate a laser beam source, a phototube, a deflation roll, a steel plate, and a pulse generator, respectively. First, the helium-neon from the radar beam source 1 is
- A laser is applied to a moving steel plate 4, and the reflected laser beam is received by a phototube 2 and converted into an electrical signal. This electrical signal passes through a bandpass filter 6 to have its low frequency components removed. As a result, the iM signal has an average roughness Ra)
Calculator 7, Maximum peak height Rmax) Calculator 8, Number of peaks (P
Pi) are sent to each of the arithmetic units 9 and subjected to signal processing. Output signals from each computing unit 7, 8, and 9 are input to a recorder 10 and a display 11, respectively.
なお各演算器７．８．９にばパルスジェネレーター５か
らのライン速度信号が入力される。第２図はライン速度
と出力特性との関係を示した図である。Note that a line speed signal from the pulse generator 5 is input to each of the computing units 7, 8, and 9. FIG. 2 is a diagram showing the relationship between line speed and output characteristics.
第３図、第４図および第５図はそれぞれ平均１■さくＲ
ａ） 、最大山高さくＲｍａｘ） 、山数（１〕ｒ’ｉ
）の出力特性を示した図である。あらかしめ本装置ご
測定したザンプルを従来の触針式表面ｔ１１さ、＋１で
測定し、これらの出力特性を作成しておく。この出力特
性を各演算器７．８．９に補正しておくことにより、圧
延中の鋼板やロールの表面粗さを連続的に測定すること
ができる。Figures 3, 4 and 5 each have an average of 1 inch R.
a), maximum peak height Rmax), number of peaks (1) r'i
) is a diagram showing the output characteristics of. Preparation Measure the sample measured using this device using a conventional stylus type surface t11, +1, and create these output characteristics. By correcting this output characteristic in each computing unit 7, 8, and 9, the surface roughness of the steel plate or roll during rolling can be continuously measured.
このように本発明による方法を使用する装置を圧延出側
、検査ライン又は圧延ロール表面近くに設置することに
より走行中の鋼板又はロールの表面粗さを連続的に測定
できる。As described above, by installing an apparatus using the method according to the present invention on the rolling exit side, on an inspection line, or near the surface of a rolling roll, it is possible to continuously measure the surface roughness of a running steel plate or roll.
第１図は、本発明の表面片１）さ測定法を調質圧延ミル
に適用した場合の概略的説明図、
第２図は、ライン速度と出力特性との関係を示した図、
第３図、第４図および第５図はそれぞれ平均粗さくＲａ
） 、最大山高さくＲｍａｘ） 、山数（Ｐｒ’ｉ ）
の出力特性を示した図である。
（参照番号）
１：レーザー光線源、２：光電管、
３：デフレフロール、４：鋼板、
５；パルスジェネレーター、
６：ハンドパスフィルター、７：平均粗さ演算器、８：
最大山高さ演算器、９：山数６ｉｉ算器１０：記録計、
１１：表示器
出願人 住友金属工業株式会社
代理人 弁理士 新居 正彦FIG. 1 is a schematic explanatory diagram when the method for measuring surface thickness 1) of the present invention is applied to a temper rolling mill. FIG. 2 is a diagram showing the relationship between line speed and output characteristics. Figures 4 and 5 show the average roughness Ra
), maximum peak height Rmax), number of peaks (Pr'i)
FIG. 3 is a diagram showing the output characteristics of. (Reference numbers) 1: Laser beam source, 2: Phototube, 3: Deflation roll, 4: Steel plate, 5: Pulse generator, 6: Hand pass filter, 7: Average roughness calculator, 8:
Maximum peak height calculator, 9: Number of peaks 6ii calculator 10: Recorder,
11: Display device applicant Sumitomo Metal Industries Co., Ltd. agent Patent attorney Masahiko Arai
Claims (1)
たレーザ光線を光電管で受けて電気信号に変換した後、
低周波成分をパン１−バスフィルターにて除去し、この
信号を平均粗さ演算器、最大山高さ演算器、山数演算器
の各々へ入力し、前記演算器の各々からの出力を表示器
および記録計の各々へ入力し、鋼板の表面粗さを連続的
に測定することを特徴とする鋼板の表面粗さ測定法。A laser beam is applied to the surface of the steel plate, and the laser beam reflected from the surface of the steel plate is received by a phototube and converted into an electrical signal.
Low frequency components are removed by a pan 1-bass filter, and this signal is input to each of the average roughness calculator, maximum peak height calculator, and peak number calculator, and the output from each of the calculators is displayed on the display. and a recorder, and continuously measure the surface roughness of the steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1751683A JPS59143907A (en) | 1983-02-07 | 1983-02-07 | Method for measuring surface roughness of steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1751683A JPS59143907A (en) | 1983-02-07 | 1983-02-07 | Method for measuring surface roughness of steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59143907A true JPS59143907A (en) | 1984-08-17 |
Family
ID=11946122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1751683A Pending JPS59143907A (en) | 1983-02-07 | 1983-02-07 | Method for measuring surface roughness of steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59143907A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2620823A1 (en) * | 1987-09-17 | 1989-03-24 | Centre Tech Ind Papier | DEVICE FOR CONTINUOUSLY DETERMINING A SURFACE CONDITION INDEX OF A MOVING SHEET MATERIAL |
| JP2009243907A (en) * | 2008-03-28 | 2009-10-22 | Jfe Steel Corp | Shape measuring method of cold-rolled steel sheet |
| JP2019171389A (en) * | 2018-03-27 | 2019-10-10 | ダイハツ工業株式会社 | Inspection method of streak-like pattern on copper plate surface |
-
1983
- 1983-02-07 JP JP1751683A patent/JPS59143907A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2620823A1 (en) * | 1987-09-17 | 1989-03-24 | Centre Tech Ind Papier | DEVICE FOR CONTINUOUSLY DETERMINING A SURFACE CONDITION INDEX OF A MOVING SHEET MATERIAL |
| US4978861A (en) * | 1987-09-17 | 1990-12-18 | Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses | Device for the continuous determination of a surface state index for a moving creped sheet |
| JP2009243907A (en) * | 2008-03-28 | 2009-10-22 | Jfe Steel Corp | Shape measuring method of cold-rolled steel sheet |
| JP2019171389A (en) * | 2018-03-27 | 2019-10-10 | ダイハツ工業株式会社 | Inspection method of streak-like pattern on copper plate surface |
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