JPS63118057A - Production of hot dip aluminized steel sheet - Google Patents
Production of hot dip aluminized steel sheetInfo
- Publication number
- JPS63118057A JPS63118057A JP26194186A JP26194186A JPS63118057A JP S63118057 A JPS63118057 A JP S63118057A JP 26194186 A JP26194186 A JP 26194186A JP 26194186 A JP26194186 A JP 26194186A JP S63118057 A JPS63118057 A JP S63118057A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- hot dip
- brush
- aluminized steel
- dip aluminized
- 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
- 229910000680 Aluminized steel Inorganic materials 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 238000007747 plating Methods 0.000 claims description 30
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000003973 paint Substances 0.000 abstract description 3
- 238000005269 aluminizing Methods 0.000 abstract 2
- 229910018125 Al-Si Inorganic materials 0.000 abstract 1
- 229910018520 Al—Si Inorganic materials 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 210000003298 dental enamel Anatomy 0.000 description 7
- 239000002585 base Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000005275 alloying Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004534 enameling Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- -1 gold metal compound Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は溶融アルミニウムめっき鋼板の製造方法に関し
、詳しくは溶融めっき直後のまだ溶融状態にあるめっき
層をブラシングにより研削、除去することにより特にホ
ーロー下地用、耐熱塗装下地用に適するように溶融アル
ミニウムめっき鋼板の機能を改善するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for producing hot-dip aluminized steel sheets, and more specifically, the present invention relates to a method for producing hot-dip aluminized steel sheets, and more specifically, the present invention relates to a method for manufacturing a hot-dip aluminized steel sheet, and more specifically, by grinding and removing the plating layer that is still in a molten state immediately after hot-dip plating by brushing. This improves the functionality of hot-dip aluminum-plated steel sheets to make them suitable for use as base materials and as base materials for heat-resistant paint.
耐食性、耐熱性に優れた溶融アルミニウムめっき鋼板は
、建築材料などとして、裸で使用されるだけでなく、ホ
ーロー用下地鋼板、耐熱塗装用下地鋼板として用いられ
ることも多い。Hot-dip aluminized steel sheets with excellent corrosion resistance and heat resistance are not only used bare as building materials, but are also often used as base steel plates for enamel and base steel plates for heat-resistant painting.
ホーロー用下地鋼板としての溶融アルミニウムめっき鋼
板は、アルミニウムめっき層のために、ホーローの密着
性が良好で耐機械的衝撃性に優れているという特徴があ
った。しかし、同時にホーロー焼成温度はアルミニウム
めっき層の融点以下に抑える必要があり、ホーロー釉薬
としては、アルカリ金属酸化物を多量に添加した低軟化
点のものが使用されている。そのため、一般の鋼板ホー
ローに比較して耐熱性、耐薬品性、硬度、光沢などが劣
るという欠点があった。The hot-dip aluminized steel sheet used as the base steel sheet for enamel has the characteristics of good adhesion to the enamel and excellent mechanical impact resistance due to the aluminum plating layer. However, at the same time, the enamel firing temperature must be kept below the melting point of the aluminum plating layer, and enamel glazes with low softening points that contain a large amount of alkali metal oxides are used. Therefore, it has the drawback of being inferior in heat resistance, chemical resistance, hardness, gloss, etc. compared to general enameled steel plates.
これらの欠点を解消するために、アルミニウムめっき鋼
板を予め加熱し、アルミニウムめっき層を表面までＡＱ
−Ｆｅ（ＡＱ−Ｆｅ−３ｉ）金属間化合物層にすること
によって、耐熱性、耐薬品性などに優れた高軟化点のホ
ーローの適用を可能にすることが行なわれている。In order to eliminate these drawbacks, the aluminum-plated steel sheet is heated in advance and the aluminum plating layer is heated to the surface.
-Fe (AQ-Fe-3i) intermetallic compound layer is used to enable the application of high softening point enamel with excellent heat resistance, chemical resistance, etc.
しかしながら、この方法では、めっき鋼板を所定の形状
に加工した後加熱するため、工程が複雑になりホーロー
加工業者にとっては必ずしも満足の行くものではなかっ
た。However, in this method, the plated steel sheet is processed into a predetermined shape and then heated, which complicates the process and is not always satisfactory for enameling manufacturers.
連続め゛っきライン上でめっき鋼板を合金化処理する方
法としては、合金化亜鉛めっき鋼板の製造方法のように
、めっき浴から引き上げられた直後の鋼板をただちに加
熱炉内に導いて合金化処理することが考えられる。しか
し、この方法では、下記の点で問題がある。As a method for alloying plated steel sheets on a continuous plating line, as in the manufacturing method of alloyed galvanized steel sheets, the steel sheets immediately after being pulled out of the plating bath are immediately led into a heating furnace and alloyed. It is possible to treat it. However, this method has the following problems.
１） めっき層と下地鋼板とが反応してＦｅ−ＡＲ（Ｆ
ｅ−ＡＱ、−５ｉ）合金層を形成するため、合金化処理
後の合金層が厚く成長するのは防ぐことができない。1) The plating layer and the underlying steel plate react to form Fe-AR (F
e-AQ, -5i) Since an alloy layer is formed, it is impossible to prevent the alloy layer from growing thickly after the alloying treatment.
合金層が厚いと加工によって、合金層に割れを生じ、加
工が厳しい場合には、合金層自身が剥離することもある
ので、好ましくない。If the alloy layer is too thick, the alloy layer may crack during processing, and if the processing is severe, the alloy layer itself may peel off, which is not preferable.
２）連続めっきライン上において、限られた短時間内に
合金化処理するためには、相当な高温度が必要であるの
で、経済的でない。2) On a continuous plating line, considerably high temperatures are required to carry out the alloying treatment within a limited short time, which is not economical.
本発明は、上記の問題点を解決し、薄い合金層を有する
アルミニウムめっき鋼板を連続めっきラインで連続的に
製造することを可能にしたものである。すなわち、本発
明は連続溶融アルミニウムめっきラインにおいて、めっ
き浴から引き上げられた直後の鋼板のまだ溶融状態にあ
るめっき層の少なくとも片面を回転するブラシにより研
削、除去することにより鋼板と溶融アルミニウムめっき
浴とが接触していた間に鋼板表面に形成された薄いＦｅ
−ＡＱ−８ｉ系金金属化合物層を表面に露出させること
により、溶融アルミニウムめっき鋼板を製造する方法で
ある。The present invention solves the above problems and makes it possible to continuously produce aluminum-plated steel sheets having a thin alloy layer on a continuous plating line. That is, in a continuous hot-dip aluminum plating line, the present invention uses a rotating brush to grind and remove at least one side of the still molten plating layer of the steel sheet just after it has been pulled out of the plating bath, thereby separating the steel sheet from the hot-dip aluminum plating bath. The thin Fe formed on the steel plate surface while the
- This is a method of manufacturing a hot-dip aluminum plated steel sheet by exposing an AQ-8i gold metal compound layer on the surface.
本発明によれば、溶融アルミニウムめっき浴から引き上
げられ、ガスワイピングによって付着量を調整された直
後のめっき鋼板の少なくとも片面の溶融状態にあるめっ
き層の表面を、線径０．３ｍ＋＋＋以下の鋼製ブラシで
研削、除去することを特徴とする溶融アルミニウムめっ
き鋼板の製造方法が提供される。According to the present invention, the surface of the plating layer in a molten state on at least one side of a plated steel sheet immediately after being pulled out of a hot-dip aluminum plating bath and having its adhesion amount adjusted by gas wiping is coated with a steel plate having a wire diameter of 0.3 m+++ or less. A method for producing a hot-dip aluminized steel sheet is provided, which comprises grinding and removing with a brush.
連続溶融アルミニウムめっきラインにおいて、めっき浴
から引き上げられた鋼板はめっき付着量を制御するため
のガスワイピングノズルの間を通過した後、めっき層が
まだ溶融状態にある位置で回転する鋼線のブラシを銅帯
に押し当て、溶融状態にあるアルミニウム層のみを除去
する。In a continuous hot-dip aluminum plating line, the steel plate is pulled out of the plating bath, passes between gas wiping nozzles to control the amount of plating, and then passes through a rotating steel wire brush at a position where the plating layer is still in a molten state. It is pressed against a copper strip and only the molten aluminum layer is removed.
この場合、鋼線ブラシの鋼線の径は０ 、３＋ｗｍ以下
でなければならぬ。その理由は、ブラシの線径が０ 、
３ｍｍを超えると、ＡＱ層のみが完全に除去されない部
分が生じるので、鋼板の表面粗さが非常に粗くなり、外
観が不良となるばかりでなく、合金層を表面に露出させ
るという本来の目的を達成することができず、耐熱塗装
などを施こした場合、充分な塗膜密着性が得られないと
いう問題が発生する。In this case, the diameter of the steel wire of the steel wire brush must be 0.3+wm or less. The reason is that the wire diameter of the brush is 0,
If it exceeds 3 mm, there will be parts where only the AQ layer is not completely removed, which will not only result in a very rough surface of the steel plate, resulting in a poor appearance, but also defeating the original purpose of exposing the alloy layer on the surface. If this cannot be achieved and a heat-resistant coating is applied, a problem arises in that sufficient coating film adhesion cannot be obtained.
なお、めっき鋼板の研削面の外観は、ブラシをかけるタ
イミングによって微妙に変化するが、均質な外観を得る
ためには極力、早い時機に研削するのが好ましい。また
、研削面の研削前のめっき付着量は、可能な限り小さく
して、研削量を少なくするのがよい。Note that the appearance of the ground surface of a plated steel plate changes slightly depending on the timing of brushing, but it is preferable to grind as early as possible in order to obtain a homogeneous appearance. Further, it is preferable that the amount of plating deposited on the ground surface before grinding be as small as possible to reduce the amount of grinding.
第１図は本発明方法を実施するための装置の１例の概念
図である。FIG. 1 is a conceptual diagram of an example of an apparatus for carrying out the method of the present invention.
連続溶融アルミニウムめっきラインの還元炉において、
焼鈍されると同時に表面を活性化された鋼’ｉ：Ｆ １
は外気から遮断されてめっき浴６中に入り、浴を出て、
ガスワイピングノズル５でめっき付着量を調整され、そ
の後、本発明によるブラシロール２によって鍔体の少く
とも片面のアルミニウム層を研削除去される。In the reduction furnace of the continuous hot-dip aluminum plating line,
Steel annealed and surface activated at the same time: F 1
enters the plating bath 6, isolated from the outside air, leaves the bath,
The amount of plating deposited is adjusted by the gas wiping nozzle 5, and then the aluminum layer on at least one side of the flange body is polished off by the brush roll 2 according to the present invention.
以下、実施例について説明する。Examples will be described below.
連続溶融アルミニウムめっきラインにおいて。In a continuous hot-dip aluminum plating line.
板厚０．８１１１１１、板幅９１４ｍＩｎの低炭素鋼帯
を走行速度１００ｍ／ｍｉｎで還元炉に通して表面を清
浄化した後、浴温６７０℃のアルミニウムめっき浴（ｉ
−１０％Ｓｉ）に連続的に導き浴上に引き上げ、ガスワ
イピングによりめっき付着量を調整した後、ガスワイプ
ノズル直上に設置したブラシロールで溶融状態にあるめ
っき層の片面を除去した。ブラシロールは銅帯の走行方
向とは逆の方向に回転させた。また、ブラシの材質は鋼
線であり、線径は０．１〜０ 、５ｍｒａの範囲内で種
々のものを用いた。A low carbon steel strip with a plate thickness of 0.811111 and a plate width of 914 mIn was passed through a reduction furnace at a running speed of 100 m/min to clean the surface, and then placed in an aluminum plating bath (i) with a bath temperature of 670°C.
-10% Si) was continuously introduced onto the bath and the amount of plating deposited was adjusted by gas wiping, and then one side of the plating layer in a molten state was removed with a brush roll installed directly above the gas wipe nozzle. The brush roll was rotated in a direction opposite to the running direction of the copper strip. The material of the brush was steel wire, and various wire diameters were used within the range of 0.1 to 0.5 mra.
第１表は、このようにして製造した製品のブラシロール
の表面外観、ｌの残存量、およびこれらの鋼板のブラシ
面に耐熱塗装を施して４５０℃で２００時間加熱した後
の塗膜密着性を示す。Table 1 shows the surface appearance of the brush rolls manufactured in this way, the remaining amount of l, and the paint film adhesion after heat-resistant coating was applied to the brush surfaces of these steel plates and heated at 450°C for 200 hours. shows.
線径が０．３ｍｍ１１ｍ以下の場合には表面外観が良好
で、ＡＱの残存量も、線径が０ 、３＋ｉｍを超える比
較材の場合よりも少ない。また、耐熱塗膜の密着性も比
較材に比べると非常に良好である６線径が０．３ｍｍを
超える場合にはｉが均一に除去されず、表面外観が悪く
なる６
第１表
合金比。When the wire diameter is 0.3 mm or less, the surface appearance is good, and the residual amount of AQ is smaller than that of comparative materials whose wire diameter exceeds 0.3 mm. In addition, the adhesion of the heat-resistant coating is also very good compared to comparative materials. 6 If the wire diameter exceeds 0.3 mm, i will not be removed uniformly and the surface appearance will deteriorate. 6 Table 1 Alloy ratio .
以上のように、本発明によると、耐熱塗装、ホーローな
どの下地鋼板としての優れた機能性を有するアルミニウ
ムめっき鋼板を経済的に製造することができる。As described above, according to the present invention, it is possible to economically produce an aluminum-plated steel sheet that has excellent functionality as a base steel sheet for heat-resistant coating, enamel, etc.
第１図は本発明方法を実施するための装置の概念を示す
図である。FIG. 1 is a diagram showing the concept of an apparatus for carrying out the method of the present invention.
Claims (1)
ワイピングによって付着量を調整された直後のめっき鋼
板の少なくとも片面の溶融状態にあるめっき層の表面を
、線径０．３ｍｍ以下の鋼製ブラシで研削、除去するこ
とを特徴とする溶融アルミニウムめっき鋼板の製造方法
。1. Grinding the surface of the plating layer in a molten state on at least one side of the plated steel plate immediately after it has been lifted from the hot-dip aluminum plating bath and the coating amount has been adjusted by gas wiping with a steel brush with a wire diameter of 0.3 mm or less, A method for producing a hot-dip aluminized steel sheet, the method comprising removing the aluminized steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26194186A JPS63118057A (en) | 1986-11-05 | 1986-11-05 | Production of hot dip aluminized steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26194186A JPS63118057A (en) | 1986-11-05 | 1986-11-05 | Production of hot dip aluminized steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63118057A true JPS63118057A (en) | 1988-05-23 |
Family
ID=17368803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26194186A Pending JPS63118057A (en) | 1986-11-05 | 1986-11-05 | Production of hot dip aluminized steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63118057A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0483810A2 (en) * | 1990-10-31 | 1992-05-06 | Kawatetsu Galvanizing Co., Ltd. | Method of producing galvanized steel sheets having a good workability |
| FR2758571A1 (en) * | 1997-01-21 | 1998-07-24 | Lorraine Laminage | Steel sheet coated with double layer of aluminium@ alloys |
| CN105525247A (en) * | 2016-03-02 | 2016-04-27 | 江苏法尔胜泓昇集团有限公司 | Zinc applying method for steel wire galvanizing by dipping |
| CN105525246A (en) * | 2016-03-02 | 2016-04-27 | 江苏法尔胜泓昇集团有限公司 | Zinc applying device for steel wire galvanizing by dipping |
| JP2017179513A (en) * | 2016-03-31 | 2017-10-05 | 日新製鋼株式会社 | Molten aluminum plating steel wire, and method of manufacturing the same |
-
1986
- 1986-11-05 JP JP26194186A patent/JPS63118057A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0483810A2 (en) * | 1990-10-31 | 1992-05-06 | Kawatetsu Galvanizing Co., Ltd. | Method of producing galvanized steel sheets having a good workability |
| EP0483810A3 (en) * | 1990-10-31 | 1993-03-03 | Kawatetsu Galvanizing Co., Ltd. | Method of producing galvanized steel sheets having a good workability |
| FR2758571A1 (en) * | 1997-01-21 | 1998-07-24 | Lorraine Laminage | Steel sheet coated with double layer of aluminium@ alloys |
| CN105525247A (en) * | 2016-03-02 | 2016-04-27 | 江苏法尔胜泓昇集团有限公司 | Zinc applying method for steel wire galvanizing by dipping |
| CN105525246A (en) * | 2016-03-02 | 2016-04-27 | 江苏法尔胜泓昇集团有限公司 | Zinc applying device for steel wire galvanizing by dipping |
| JP2017179513A (en) * | 2016-03-31 | 2017-10-05 | 日新製鋼株式会社 | Molten aluminum plating steel wire, and method of manufacturing the same |
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