JP3113143B2 - Manufacturing method of hot-dip aluminized steel sheet - Google Patents
Manufacturing method of hot-dip aluminized steel sheetInfo
- Publication number
- JP3113143B2 JP3113143B2 JP06055186A JP5518694A JP3113143B2 JP 3113143 B2 JP3113143 B2 JP 3113143B2 JP 06055186 A JP06055186 A JP 06055186A JP 5518694 A JP5518694 A JP 5518694A JP 3113143 B2 JP3113143 B2 JP 3113143B2
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- roll
- support roll
- hot
- steel sheet
- 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.)
- Expired - Fee Related
Links
Landscapes
- Coating With Molten Metal (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶融アルミメッキ鋼
板、もしくは溶融アルミ合金メッキ鋼板の製造方法に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a hot-dip aluminum-plated steel sheet or a hot-dip aluminum alloy-plated steel sheet.
【０００２】[0002]
【従来の技術】図１において、焼鈍炉７で加熱および還
元された鋼帯１はシンクロール２に巻き付けられて溶融
アルミ浴６に浸漬され、浴上に引き上げられて冷却され
る。そして、鋼帯メッキ層と鋼帯表面の間には合金層が
生成され、その上にアルミもしくはアルミ合金層が形成
される。この際に鋼帯のバタツキや形状抑制のためにサ
ポートロール３が鋼帯に押し付けられるように設置され
ている。サポートロール３は、図２に示すように、モー
タ１１によってジョイント部９，カップリング部８を介
し回転される。サポートロール３の回転速度は鋼帯の送
り速度とほぼ同等である。また、ロールには耐熱性や耐
摩耗性に優れた硬質鋼やステンレス鋼が用いられ，或い
はその表面に溶射等の表面処理が施されている。鋼帯は
その後、浴上に引き上げられ、ワイピングノズル４によ
ってアルミの付着量が制御される。2. Description of the Related Art In FIG. 1, a steel strip 1 heated and reduced in an annealing furnace 7 is wound around a sink roll 2, immersed in a molten aluminum bath 6, pulled up on the bath and cooled. Then, an alloy layer is generated between the steel strip plating layer and the steel strip surface, and an aluminum or aluminum alloy layer is formed thereon. At this time, the support roll 3 is installed so as to be pressed against the steel strip to suppress flapping and shape of the steel strip. As shown in FIG. 2, the support roll 3 is rotated by a motor 11 via a joint portion 9 and a coupling portion 8. The rotation speed of the support roll 3 is substantially equal to the feed speed of the steel strip. The roll is made of hard steel or stainless steel having excellent heat resistance and wear resistance, or its surface is subjected to a surface treatment such as thermal spraying. The steel strip is then lifted onto the bath, and the amount of aluminum deposited is controlled by the wiping nozzle 4.
【発明が解決しようとする課題】しかしながら、このよ
うな従来の方法では、鋼帯表面に異物，アルミ酸化物，
金属化合物等（以下ドロス類と称す）が付着した場合、
これを除去する方法がないため、鋼帯のドロス類による
表面欠陥が多発する。また、前記ロールの軸部および軸
受部はロールの回転に伴い著しく摩耗する。軸部と軸受
部が摩耗すると軸受けと軸の隙間が大きくなり、ロール
の回転時にロールが振動するようになる。その結果、鋼
帯のバタツキが発生して、メッキ浴上方でのワイピング
ノズル部においてノズルと鋼帯の間隔が変動するため、
均一なメッキ付着量が得られなくなる。また、摩耗が大
きすぎるとロール折損等の事故が発生するという問題が
あった。However, in such a conventional method, foreign matter, aluminum oxide,
When metal compounds etc. (hereinafter referred to as dross) adhere,
Since there is no method for removing this, many surface defects occur due to dross of the steel strip. Further, the shaft portion and the bearing portion of the roll are significantly worn as the roll rotates. When the shaft portion and the bearing portion wear, the gap between the bearing and the shaft increases, and the roll vibrates when the roll rotates. As a result, flapping of the steel strip occurs, and the interval between the nozzle and the steel strip fluctuates in the wiping nozzle portion above the plating bath.
A uniform amount of plating cannot be obtained. Further, if the wear is too large, there is a problem that an accident such as breakage of the roll occurs.
【０００３】ドロス類による表面欠陥を解決する対策と
して図３に示すような固定式のワイピング装置が考えら
れた。しかし、固定であるため、鋼帯と接触させると著
しく摩耗し、寿命が非常に短く、また設備コストがかか
るという欠点がある。またサポートロールの軸部と軸受
部の両方を硬質化すると摺動部の摩擦抵抗が大きくな
り、ロールを回転するモータの負荷によるトリップやロ
ール停止等の問題が発生し、また、軸部，軸受部のいず
れか一方のみ硬質化すれば他方の摩耗が著しくなる。As a countermeasure for resolving surface defects caused by dross, a fixed wiping device as shown in FIG. 3 has been considered. However, since it is fixed, there is a drawback that when it is brought into contact with a steel strip, it is significantly worn, the life is very short, and the equipment cost is high. Also, if both the shaft and the bearing of the support roll are hardened, the frictional resistance of the sliding portion increases, causing problems such as tripping and roll stop due to the load of the motor that rotates the roll. If only one of the parts is hardened, the other wears significantly.
【０００４】本発明は上記課題を解決し、鋼帯表面に付
着するドロス類のワイピング効果を有しサポートロール
の軸部，軸受部の摩耗を抑制する溶融アルミメッキ鋼板
の製造方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and to provide a method for producing a hot-dip aluminized steel sheet having a wiping effect of dross adhering to the surface of a steel strip and suppressing abrasion of a shaft portion and a bearing portion of a support roll. With the goal.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するた
め、本発明の構成は次のとおりとする。即ち、鋼帯をシ
ンクロールを介して溶融アルミ浴中に浸漬し、その後に
サポートロールを介して引き上げ、ワイピングノズルか
ら気体を噴出させて冷却する溶融アルミメッキ鋼板の製
造方法において、前記鋼帯のメッキ合金層の硬度よりも
低い硬度の表面を持つ前記サポートロールを、鋼帯の送
り速度に対して５〜９５％の周速度で回転させることで
ある。Means for Solving the Problems In order to solve the above problems, the constitution of the present invention is as follows. That is, in a method of manufacturing a hot-dip aluminized steel sheet in which a steel strip is immersed in a molten aluminum bath through a sink roll, and then pulled up through a support roll, and a gas is jetted from a wiping nozzle to cool the steel strip, The supporting roll having a surface having a hardness lower than the hardness of the plating alloy layer is rotated at a peripheral speed of 5 to 95% with respect to the feed speed of the steel strip.
【０００６】[0006]
【作用】鋼帯の送り速度に対してサポートロールの周速
度を５〜９５％の範囲で遅くすることにより、鋼帯とサ
ポートロール間で速度差が発生し、鋼帯はロールによっ
て進行速度と逆の方向に抵抗を受ける。これにより、鋼
帯表面に付着したドロス類は鋼帯表面より除去され、ア
ルミ浴中に落下する。また、アルミ浴中に浸漬した際に
生成する合金層の硬度よりも、ロール表面硬度が低いた
め、鋼帯の表面にスリ疵が発生しない。By reducing the peripheral speed of the support roll in the range of 5 to 95% with respect to the feed speed of the steel strip, a speed difference is generated between the steel strip and the support roll. Receives resistance in the opposite direction. Thereby, dross adhering to the steel strip surface is removed from the steel strip surface and falls into the aluminum bath. Further, since the surface hardness of the roll is lower than the hardness of the alloy layer generated when the alloy layer is immersed in the aluminum bath, no scratch is generated on the surface of the steel strip.
【０００７】[0007]
【実施例】以下に本発明の実施態様を図面に示す一実施
例にもとづき説明する。図１において、１は被メッキ材
である鋼帯、２はシンクロール、３は機械構造用炭素鋼
製のサポートロール、４はワイピングノズル、５はサポ
ートロール軸受部、６は溶融アルミ浴、７は還元ガスで
満たされた焼鈍炉である。また図２はサポートロールの
回転機構を示す側面図であり、８はカップリング部、９
はユニバーサル式のジョイント部、１０は減速機、１１
はモーターである。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to an embodiment shown in the drawings. In FIG. 1, 1 is a steel strip to be plated, 2 is a sink roll, 3 is a support roll made of carbon steel for machine structure, 4 is a wiping nozzle, 5 is a support roll bearing, 6 is a molten aluminum bath, 7 Is an annealing furnace filled with reducing gas. FIG. 2 is a side view showing a rotation mechanism of the support roll.
Is a universal joint, 10 is a reducer, 11
Is a motor.
【０００８】以上において、作動状態を説明する。鋼帯
の送り速度に対してサポートロール３の周速度を５〜９
５％の範囲で遅くすることにより、鋼帯とサポートロー
ル間で速度差が発生し、鋼帯はロールによって進行速度
と逆の方向に抵抗を受ける。これにより、鋼帯表面に付
着したドロス類は鋼帯表面より除去され、アルミ浴６中
に落下する。また、アルミ浴中に浸漬した際に生成する
Ａｌ−ＦｅもしくはＡｌ−Ｓｉ−Ｆｅ系の合金層の硬度
よりも、ロール表面硬度が低いため、鋼帯の表面にスリ
疵が発生しない。サポートロールの回転速度は可変であ
るため、ドロス類の発生状況に応じて回転速度を変化さ
せ、ワイピング効果を変化させることができる。また、
従来よりもサポートロールの回転速度が低くなるため、
当然に回転数が減少し、ロールの軸および軸受けとカッ
プリング部の摩耗を減少させることができる。また、鋼
帯表面のワイピング装置を設置する必要がないため、コ
ストがかからない。The operation state will be described above. Set the peripheral speed of the support roll 3 to 5 to 9 with respect to the feed speed of the steel strip.
By reducing the speed in the range of 5%, a speed difference occurs between the steel strip and the support roll, and the steel strip receives resistance in a direction opposite to the traveling speed by the roll. Thereby, the dross adhered to the steel strip surface is removed from the steel strip surface and falls into the aluminum bath 6. In addition, since the roll surface hardness is lower than the hardness of the Al-Fe or Al-Si-Fe alloy layer generated when immersed in an aluminum bath, no scratches occur on the surface of the steel strip. Since the rotation speed of the support roll is variable, the rotation speed can be changed according to the state of dross generation, and the wiping effect can be changed. Also,
Because the rotation speed of the support roll is lower than before,
Naturally, the number of rotations can be reduced, and the wear of the shaft and the bearing of the roll and the coupling portion can be reduced. In addition, since there is no need to install a wiping device for the surface of the steel strip, there is no cost.
【０００９】サポートロールの周速度は、鋼帯送り速度
に対し、５〜９５％が適当であり、好ましくは２０〜６
０％（通常運転からの修正運転時）、更に好ましくは３
０〜５０％（通常運転時）である。５％より小さくなる
と帯板に局部摩耗が生じると共に、サポートロールの軸
受部に酸化物などの異物が入りやすくなる。９５％より
大きくなるとドロス類の掻き取り（スクレーパ）効果が
なくなってくる。サポートロールの材料は前記のほかＪ
ＩＳ機械軸受鋼なども用いられる。The peripheral speed of the support roll is suitably from 5 to 95% of the feed speed of the steel strip, preferably from 20 to 6%.
0% (during corrective operation from normal operation), more preferably 3%
0 to 50% (during normal operation). If it is less than 5%, local wear occurs on the strip and foreign substances such as oxides easily enter the bearing portion of the support roll. If it exceeds 95%, the effect of scraping dross (scraper) is lost. The material of the support roll is J
IS mechanical bearing steel is also used.
【００１０】本発明は前記した実施例や実施態様に限定
されず、特許請求の精神および範囲を逸脱せずに種々の
変形を含む。The present invention is not limited to the embodiments and embodiments described above, but includes various modifications without departing from the spirit and scope of the appended claims.
【００１１】[0011]
【発明の効果】本発明により、サポートロールの回転速
度を鋼帯の送り速度より遅くすることで、鋼帯表面に発
生するドロス類の付着による表面欠陥が是正され、ま
た、軸部および軸受部での摩耗量を低減させることによ
り、ワイピングノズルでの付着量制御を安定化させるこ
とができる。According to the present invention, the rotational speed of the support roll is made slower than the feed speed of the steel strip, whereby the surface defects due to the adhesion of dross generated on the steel strip surface are corrected, and the shaft and the bearing are formed. By reducing the amount of abrasion, the control of the amount of adhesion at the wiping nozzle can be stabilized.
【図１】本発明の実施に使用される装置の側面図であ
る。FIG. 1 is a side view of an apparatus used to practice the present invention.
【図２】サポートロール駆動部の正面図である。FIG. 2 is a front view of a support roll driving unit.
【図３】従来のワイピング装置の機構を示す側面図であ
る。FIG. 3 is a side view showing a mechanism of a conventional wiping device.
１…鋼帯 ２…シンクロール ３…サポートロール ４
…ワイピングノズル ５…サポートロール軸および軸受部 ６…溶融アルミメ
ッキ浴 ７…焼鈍炉 ８…サポートロールカップリング部 ９…ジョイント部 １０…減速機 １１…駆動モータDESCRIPTION OF SYMBOLS 1 ... Steel strip 2 ... Sink roll 3 ... Support roll 4
... Wiping nozzle 5... Support roll shaft and bearing 6. Hot-dip aluminum plating bath 7. Annealing furnace 8... Support roll coupling 9. Joint 10.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 嶋津 鐡哉 大阪府堺市石津西町５番地 日新製鋼株 式会社 堺製造所内 (58)調査した分野(Int.Cl.7，ＤＢ名) C23C 2/00 - 2/40 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tetsuya Shimazu 5 Ishizu Nishimachi, Sakai City, Osaka Prefecture Nisshin Steel Corporation Sakai Works (58) Field surveyed (Int. Cl. 7 , DB name) C23C 2 / 00-2/40
Claims (1)
浴中に浸漬し、その後にサポートロールを介して引き上
げ、ワイピングノズルから気体を噴出させて冷却する溶
融アルミメッキ鋼板の製造方法において、前記鋼帯のメ
ッキ合金層の硬度よりも低い硬度の表面を持つ前記サポ
ートロールを、鋼帯の送り速度に対して５〜９５％の周
速度で回転させることを特徴とする溶融アルミメッキ鋼
板の製造方法。1. A method for producing a molten aluminum-plated steel sheet in which a steel strip is immersed in a molten aluminum bath via a sink roll, then pulled up through a support roll, and a gas is jetted from a wiping nozzle to cool the steel strip. A method of manufacturing a hot-dip aluminized steel sheet, comprising: rotating the support roll having a surface having a hardness lower than that of a plating alloy layer of a steel strip at a peripheral speed of 5 to 95% with respect to a feed speed of the steel strip. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06055186A JP3113143B2 (en) | 1994-02-28 | 1994-02-28 | Manufacturing method of hot-dip aluminized steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06055186A JP3113143B2 (en) | 1994-02-28 | 1994-02-28 | Manufacturing method of hot-dip aluminized steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07243013A JPH07243013A (en) | 1995-09-19 |
| JP3113143B2 true JP3113143B2 (en) | 2000-11-27 |
Family
ID=12991688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06055186A Expired - Fee Related JP3113143B2 (en) | 1994-02-28 | 1994-02-28 | Manufacturing method of hot-dip aluminized steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3113143B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101983429B1 (en) * | 2015-09-10 | 2019-05-28 | 김선재 | Acupressure band to resolve erectile dysfunction and premature ejaculation |
-
1994
- 1994-02-28 JP JP06055186A patent/JP3113143B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101983429B1 (en) * | 2015-09-10 | 2019-05-28 | 김선재 | Acupressure band to resolve erectile dysfunction and premature ejaculation |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07243013A (en) | 1995-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH07331402A (en) | Device for conducting continuous high-temperature immersion coating of metal strip with molten metal | |
| EP1188501B1 (en) | method and apparatus for continuous casting of aluminium bearing alloy | |
| JP3452017B2 (en) | Apparatus for removing deposits on rolls in hot-dip metal plating bath and method for preventing occurrence of nicks on hot-dip metal strip | |
| EP0070971B1 (en) | Conditioning brushes for cleaning rapid solidification casting surfaces | |
| JP3113143B2 (en) | Manufacturing method of hot-dip aluminized steel sheet | |
| EP0245862A1 (en) | Liquid film coating of iron-based metals | |
| JP3680757B2 (en) | Equipment for removing deposits from rolls in molten metal plating bath | |
| JP5293073B2 (en) | Top roll foreign matter removal device | |
| JPH05195178A (en) | Roll in molten-metal plating bath | |
| JP3231576B2 (en) | Roll cleaning method under high temperature atmosphere | |
| JPH077321Y2 (en) | Foreign matter adhesion prevention device for rolls in plating bath | |
| JPS61139658A (en) | Method for removing deposit on surface of roll in molten metallic bath for hot dipping | |
| CN100383290C (en) | Method of coating metal layer on roller surface of biroller thin belt continuous casting machine | |
| JP4576720B2 (en) | Apparatus and method for removing deposits on roll surface in molten metal plating bath | |
| JPH0248418Y2 (en) | ||
| JP2002210544A (en) | Twin roll type casting method and apparatus | |
| JP2933777B2 (en) | Top roll of continuous hot-dip plating line | |
| JP3212198B2 (en) | Rolling bearing in molten zinc bath | |
| JPH08176769A (en) | Over-the-bath supporting roll device for continuous hot dip metal coating equipment | |
| JP7380538B2 (en) | Bath roll polishing blade, polishing equipment and plating equipment | |
| JPS62176650A (en) | Device for cleaning surface of cooling roll for producing rapid cooled thin hoop | |
| JPH09256130A (en) | Continuous hot dip metal coating device | |
| JPH0641713A (en) | Member for hot dipping metal bath | |
| JPH05195177A (en) | Roll in molten-metal plating bath | |
| JPH1072654A (en) | Method for preventing sticking of dross around in-bath synchronizing roll |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20000815 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080922 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090922 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100922 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100922 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110922 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120922 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130922 Year of fee payment: 13 |
|
| LAPS | Cancellation because of no payment of annual fees |