JPS63121683A - Descaling method for hot rolled steel sheet - Google Patents
Descaling method for hot rolled steel sheetInfo
- Publication number
- JPS63121683A JPS63121683A JP26669986A JP26669986A JPS63121683A JP S63121683 A JPS63121683 A JP S63121683A JP 26669986 A JP26669986 A JP 26669986A JP 26669986 A JP26669986 A JP 26669986A JP S63121683 A JPS63121683 A JP S63121683A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- pickling
- rolled steel
- hot rolled
- scale
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 39
- 239000010959 steel Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims description 14
- 238000005554 pickling Methods 0.000 claims abstract description 38
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 238000005406 washing Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/027—Associated apparatus, e.g. for pretreating or after-treating
- C23G3/028—Associated apparatus, e.g. for pretreating or after-treating for thermal or mechanical pretreatment
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、熱延鋼板の表面スケールを除去する脱スケー
ル法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a descaling method for removing surface scale from hot rolled steel sheets.
第２図を用いて従来の脱スケール法について説明する。 The conventional descaling method will be explained using FIG.
第２図において１１はペイオフリール、１２は熱延鋼板
、１３は機械的脱スケール装置、１４は酸洗槽、１５は
水洗槽、１６はテンションリールである。In FIG. 2, 11 is a payoff reel, 12 is a hot rolled steel plate, 13 is a mechanical descaling device, 14 is a pickling tank, 15 is a water washing tank, and 16 is a tension reel.
熱延鋼板１２はペイオフリール１１よす巻き出され、機
械的脱スケール装置１３（ここではテンションリールに
よりスケールの機械的破壊が行なわれる。）を通過させ
たのち、酸洗槽１４に送られ、酸洗により脱スケールさ
れる。酸洗後の熱延鋼板１２は水洗槽１５へ送られ水洗
されたのち、テンションリール１６にて巻き取られる。The hot-rolled steel sheet 12 is unwound to the payoff reel 11, passed through a mechanical descaling device 13 (here, scale is mechanically destroyed by a tension reel), and then sent to a pickling tank 14. It is descaled by pickling. The pickled hot rolled steel sheet 12 is sent to a washing tank 15 and washed with water, and then wound up on a tension reel 16.
酸洗処理される熱延鋼板１２は圧延時の巻き取シ温度に
より、高温巻き取り材と低温巻き取り材に分けられる。The hot-rolled steel sheet 12 to be pickled is divided into high-temperature rolled material and low-temperature rolled material depending on the winding temperature during rolling.
高温巻き取り材は低温巻き取り材にくらべ表面に生成す
るスケールの厚さが厚く、酸洗時間も長くかかる。その
ため高温巻き取シ材を酸洗処理する場合は通板速度を下
げて酸洗時間を長くして処理する。The scale formed on the surface of high-temperature rolled material is thicker than that of low-temperature rolled material, and the pickling time is longer. Therefore, when pickling a high-temperature rolled material, the threading speed is lowered and the pickling time is increased.
ところで、高温巻き取り材のスケールの厚さは１０〜２
０μｍであり、低温巻き取り材では５〜１０μｍである
。スケールの厚さと酸洗時間は比例関係があり、厚く発
達したスケールは酸洗時間が長くかかる。スケールの厚
さは同じ高温巻き取り材でも鋼板コイルごとに異なり、
３〜４倍の差がある。By the way, the scale thickness of the high temperature rolled material is 10~2
0 μm, and 5 to 10 μm for low-temperature rolled material. There is a proportional relationship between scale thickness and pickling time, and thicker and developed scales require longer pickling time. The scale thickness varies from steel plate coil to steel coil, even for the same high-temperature coiled material.
There is a difference of 3 to 4 times.
現在の酸洗処理では酸洗時間をスケールが厚く、酸洗し
難い鋼板に合せて設定し、板通速夏を決めている。し九
がって、スケール厚さが薄く、酸洗に要する時間が少く
て済む鋼板を処理する場合には処理時間が長すぎ、地鉄
の溶解による損失、酸液の消費量の増大によるランニン
グコストの増加などの問題がある。ま九、通板速度を必
要なだけの酸洗時間に合せて早くすることができないた
め、１日当りの処理コイル数を大きくできないという問
題がある。In the current pickling process, the pickling time is set to suit steel plates that have thick scales and are difficult to pickle, and the plate running speed is determined. Therefore, when processing steel plates with thin scale thickness and requiring less time for pickling, the processing time is too long, resulting in losses due to melting of the base metal and running costs due to increased consumption of acid solution. There are problems such as increased costs. Third, since it is not possible to increase the threading speed to match the required pickling time, there is a problem that the number of coils processed per day cannot be increased.
本発明は、従来の上記問題点を解消しようとするもので
、各鋼板コイルの必要酸洗時間に合せて酸洗処理を効率
的に行うことを意図するものであり、鋼板のスケールの
厚さを検知して、酸洗時間を設定し、それに合せて通板
速度を決めて酸洗処理を行う方法を用い、連続的に処理
する各鋼板の酸洗時間をそのスケールに合せて過不足な
いよう（する手段を採用するものである。すなわち、本
発明は熱延鋼板を酸洗槽を通過させて表面のスケールを
除去する熱延鋼板の脱スケール方法に訃いて、酸洗槽に
入る前の熱延鋼板の表面のスケール厚さを検知して熱延
鋼板の通板速度を制御することを特徴とする熱延鋼板の
脱スケール法である。The present invention is an attempt to solve the above-mentioned conventional problems, and is intended to perform pickling treatment efficiently according to the required pickling time of each steel plate coil. This method detects the pickling time, sets the pickling time, and determines the strip threading speed accordingly to carry out the pickling process.The pickling time for each steel plate to be continuously processed is adjusted to the scale of the pickling time. In other words, the present invention adopts a method of descaling a hot rolled steel plate in which the scale on the surface of the hot rolled steel plate is removed by passing the hot rolled steel plate through a pickling tank. This is a descaling method for hot-rolled steel sheets, which is characterized by controlling the threading speed of the hot-rolled steel sheets by detecting the scale thickness on the surface of the hot-rolled steel sheets.
本発明の詳細な説明すると、前に説明し九とお夛、酸洗
時間はスケールの厚さと比例関係にあり、スケール厚さ
がわかれば酸洗時間が推定できる。スケール厚さを間接
的に測子する方法として、たとえば赤外線の吸収法があ
る。赤外線をスケール表面に照射して、反射する量を測
定し吸収量を求める。スケールの厚さが淳いものはこの
吸収量が大きく、薄いものは小さい。To explain the present invention in detail, as explained above, the pickling time is proportional to the scale thickness, and if the scale thickness is known, the pickling time can be estimated. As a method for indirectly measuring scale thickness, there is, for example, an infrared absorption method. The scale surface is irradiated with infrared rays and the amount reflected is measured to determine the amount absorbed. Thick scales have a large amount of absorption, while thin ones have a small amount of absorption.
この関係からスケール厚さを推定することができる。シ
九がって、本発明は、鋼板をペイオフリールから巻き出
したのち、表面のスケール厚さを例えば赤外線の吸収を
測る装置で測定し、その値から酸洗時間を推定し、テン
ションリールの回転数を制御することにより、鋼板の最
適な通板速度で処理することが可能となる作用効果を賽
する。The scale thickness can be estimated from this relationship. Therefore, in the present invention, after a steel plate is unwound from a payoff reel, the scale thickness on the surface is measured using a device that measures infrared absorption, for example, and the pickling time is estimated from that value. By controlling the rotation speed, it is possible to process the steel plate at the optimum threading speed.
第１図を用いて本発明の一実施例について説明する。熱
延鋼板２はペイオフリール１よｐ巻き出され、機械的脱
スケール装置３（ここではテンションリールによりスケ
ールの機械的破壊が行なわれる。）を通過させ次のち、
酸洗槽４に送られて酸洗により脱スケールされる。酸洗
後の熱延鋼板２は水洗槽５へ送られ水洗され次のちテン
ションリール６にて巻き取られる。An embodiment of the present invention will be described with reference to FIG. The hot-rolled steel sheet 2 is unwound from the payoff reel 1, passed through a mechanical descaling device 3 (here, the scale is mechanically destroyed by a tension reel), and then
It is sent to a pickling tank 4 where it is descaled by pickling. The hot-rolled steel sheet 2 after pickling is sent to a washing tank 5, washed with water, and then wound up on a tension reel 6.
鋼板表面のスケールの浮さは非接触の厚み測定器＠７、
ｆｉとえは赤外線の吸収量の測定器により、ペイオフリ
ール１から巻き出され次位置で測定され、この測定値よ
り制御器８で必要酸洗時間、すなわち、通板速度が決定
され、テンションリール６の巻き取ｐ速度が設定される
Ｏ〔発明の効果〕
本発明によれば、谷熱延鋼板の表面スケールの厚みを検
知して酸洗時間を設定し、その時間となるよう通板速度
を制御することができる九め、過敗洗医よる地鉄の損失
、酸の不必要な消耗を防止することができ、また処理量
も増大することが可能となる効果が生じ、その上、これ
による設備の運転にかかわる経済的利益は非常に大きい
。Non-contact thickness measuring device @7 measures the floating scale on the steel plate surface.
The fi toe is unwound from the payoff reel 1 and measured at the next position using an infrared absorption measuring device. Based on this measurement value, the controller 8 determines the necessary pickling time, that is, the threading speed, and the tension reel [Effect of the Invention] According to the present invention, the pickling time is set by detecting the thickness of the surface scale of the valley hot rolled steel sheet, and the threading speed is adjusted to match the pickling time. The ninth effect is that it is possible to control the loss of base metal due to excessive washing, prevent unnecessary consumption of acid, and increase the throughput. The economic benefits associated with the operation of this equipment are enormous.
第１図は本発明の熱延鋼板の脱スケール法の実施例を示
す概略図、第２図４従来の方法を示す概略図である。
復代理人 円 １） 明
復代理人 萩 原 亮 −
復代理人 安 西 篤 夫FIG. 1 is a schematic diagram showing an embodiment of the hot rolled steel sheet descaling method of the present invention, and FIG. 2 is a schematic diagram showing a conventional method. Sub-Agent: Yen 1) Meifuku Agent: Ryo Hagiwara - Sub-Agent: Atsuo Anzai
Claims (1)
る熱延鋼板の脱スケール方法において、酸洗槽に入る前
の熱延鋼板の表面のスケール厚さを検知して熱延鋼板の
通板速度を制御することを特徴とする熱延鋼板の脱スケ
ール法。In a hot-rolled steel descaling method in which scale is removed from the surface of a hot-rolled steel plate by passing it through a pickling tank, the thickness of the scale on the surface of the hot-rolled steel plate before entering the pickling tank is detected. A descaling method for hot-rolled steel sheets characterized by controlling the threading speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26669986A JPS63121683A (en) | 1986-11-11 | 1986-11-11 | Descaling method for hot rolled steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26669986A JPS63121683A (en) | 1986-11-11 | 1986-11-11 | Descaling method for hot rolled steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63121683A true JPS63121683A (en) | 1988-05-25 |
Family
ID=17434454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26669986A Pending JPS63121683A (en) | 1986-11-11 | 1986-11-11 | Descaling method for hot rolled steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63121683A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002082061A (en) * | 2000-06-30 | 2002-03-22 | Sms Demag Ag | Method and device for automatic scale detection on surface of metallic strip material, particularly hot rolled steel strip and high grade steel |
| CN101966943A (en) * | 2010-09-21 | 2011-02-09 | 杭州顿力不锈钢精丝有限公司 | Coloring equipment and method of black stainless steel central threads |
| JP2020521052A (en) * | 2017-05-24 | 2020-07-16 | ダニエリ アンド シー．オフィス メカニケ エスピーエーＤａｎｉｅｌｉ＆Ｃ．Ｏｆｆｉｃｉｎｅ Ｍｅｃｃａｎｉｃｈｅ Ｓｐａ | Cleaning plant for metal products |
| JP2023514591A (en) * | 2020-02-18 | 2023-04-06 | ポスコホールディングス インコーポレーティッド | High carbon steel sheet with excellent surface quality and its manufacturing method |
-
1986
- 1986-11-11 JP JP26669986A patent/JPS63121683A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002082061A (en) * | 2000-06-30 | 2002-03-22 | Sms Demag Ag | Method and device for automatic scale detection on surface of metallic strip material, particularly hot rolled steel strip and high grade steel |
| CN101966943A (en) * | 2010-09-21 | 2011-02-09 | 杭州顿力不锈钢精丝有限公司 | Coloring equipment and method of black stainless steel central threads |
| JP2020521052A (en) * | 2017-05-24 | 2020-07-16 | ダニエリ アンド シー．オフィス メカニケ エスピーエーＤａｎｉｅｌｉ＆Ｃ．Ｏｆｆｉｃｉｎｅ Ｍｅｃｃａｎｉｃｈｅ Ｓｐａ | Cleaning plant for metal products |
| JP2023514591A (en) * | 2020-02-18 | 2023-04-06 | ポスコホールディングス インコーポレーティッド | High carbon steel sheet with excellent surface quality and its manufacturing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS63121683A (en) | Descaling method for hot rolled steel sheet | |
| JPH11189885A (en) | Method for pickling hot rolled steel strip | |
| JPS6115919A (en) | Method for cold rolling silicon steel sheet | |
| JP2701636B2 (en) | Descaling method of hot rolled steel strip | |
| JPS59101220A (en) | Descaling method of hoop steel | |
| JP2960195B2 (en) | Descaling control method for steel strip | |
| JP2960196B2 (en) | Continuous pickling of steel strip | |
| JPS62124018A (en) | Descaling method for hot rolled steel plate | |
| JPS5495937A (en) | Descaling method for metal strip | |
| JPH0224916B2 (en) | ||
| JP2968358B2 (en) | Fast descaling method for steel strip | |
| JPS62196385A (en) | Descaling method for hot rolled steel sheet | |
| JPS5852279Y2 (en) | Continuous annealing equipment | |
| JP2002241978A (en) | Pickling apparatus | |
| JPS5775216A (en) | Descaling method for steel sheet | |
| JP3496534B2 (en) | Hot rolling equipment row and rolling method of hot rolled steel strip | |
| JPS62196400A (en) | Method for descaling hot rolled steel sheet | |
| JPS5773200A (en) | Method and device for finishing of surface of stainless steel strip | |
| JPS5680358A (en) | Method and apparatus for continuous production of sheet | |
| JP2003231981A (en) | Method for controlling line speed in pickling tank | |
| JPS57109517A (en) | Descaling method | |
| JP3820903B2 (en) | Method for producing cold-rolled steel strip with excellent surface properties | |
| JPS5843449B2 (en) | Processing method and equipment for cold-rolled steel coils | |
| JPH03193824A (en) | Method for executing continuous annealing and descaling | |
| JPH04129507U (en) | Steel strip descaling equipment |