JP2558402B2 - Surface treatment equipment for hot-dip galvanized steel strip - Google Patents
Surface treatment equipment for hot-dip galvanized steel stripInfo
- Publication number
- JP2558402B2 JP2558402B2 JP3272605A JP27260591A JP2558402B2 JP 2558402 B2 JP2558402 B2 JP 2558402B2 JP 3272605 A JP3272605 A JP 3272605A JP 27260591 A JP27260591 A JP 27260591A JP 2558402 B2 JP2558402 B2 JP 2558402B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- steel strip
- hot
- surface treatment
- steel
- 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 - Lifetime
Links
Landscapes
- Coating With Molten Metal (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶融めっき鋼板に半輝
性外観を呈する微細スパングル模様を形成するための表
面処理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface treatment apparatus for forming a fine spangle pattern having a semi-bright appearance on a hot-dip plated steel sheet.
【０００２】[0002]
【従来の技術】溶融亜鉛めっき鋼板や溶融アルミめっき
鋼板のような溶融めっき鋼板が固化メタル層上に結晶化
したスパングル模様を形成することはよく知られてお
り、このスパングル模様が微細な結晶模様として分布し
た、いわゆるミニマムもしくはゼロスパングル模様と称
される半輝性外観を有する鋼板が要求されることがあ
る。この半輝性外観を有する模様を形成するために、溶
融めっき浴から出た鋼板の表面を覆う溶融メタル表面が
完全に固化し結晶化する前に、その表面にミストや固体
微粒子を吹付けてメタル中に多数の結晶核を生成する装
置が特公昭６０−４７３４５号公報に開示されている。It is well known that hot-dip galvanized steel sheets such as hot-dip galvanized steel sheets and hot-dip aluminized steel sheets form a crystallized spangle pattern on a solidified metal layer. distributed as sometimes steel sheet is required to have a semi-bright appearance so called minimum or zero spangle pattern. In order to form a pattern with this semi-bright appearance, spray a mist or solid particles onto the surface of the molten metal covering the surface of the steel plate that has come out of the hot dip bath before it completely solidifies and crystallizes. An apparatus for producing a large number of crystal nuclei in a metal is disclosed in Japanese Examined Patent Publication No. 60-47345.
【０００３】この装置は、鋼帯の移動通路の両側に亜鉛
粉末吹付けノズルを有する垂直なケーシングを設け、こ
のケーシング間を移動する溶融めっき済みの鋼帯表面の
液状亜鉛被覆層に空気に懸濁された固体粒子を連続的に
吹付けるものである。This apparatus is provided with vertical casings having zinc powder spray nozzles on both sides of the moving passage of the steel strip, and the liquid zinc coating layer on the surface of the hot-dipped steel strip moving between the casings is suspended in air. It is a method of continuously spraying suspended solid particles.
【０００４】かかる装置において、この固体粒子の吹付
けによってスパングルを形成するときの結晶の微小化、
均一化は、鋼板に噴霧する空気の単位体積あたりの固体
微粒子の量によって左右され、通常、２〜２０μｍ粒度
の亜鉛粉末のような固体粒子を０．３〜０．５ｋｇ／時
間程度、２０〜４０ｍ／秒の空気中に懸濁せしめて吹付
ける。In such a device, the fineness of crystals when forming spangles by spraying the solid particles,
The homogenization depends on the amount of solid fine particles per unit volume of air sprayed on the steel sheet, and normally, solid particles such as zinc powder having a particle size of 2 to 20 μm are used in an amount of about 0.3 to 0.5 kg / hour for 20 to 20 kg. Suspend in 40 m / sec air and spray.
【０００５】[0005]
【発明が解決しようとする課題】ところが、かかるケー
シングを有する装置においては、ケーシング内でゼロス
パングル模様の形成に必要な固体微粒子を適度な衝突速
度で均一に吹付けられないと、所定の空気量に対する固
体微粒子の量が不均一になり、鋼帯の幅方向あるいは移
動方向に理想とするミニマムもしくはゼロスパングル模
様の形成ができない問題が生じる。また、ケーシング間
の鋼板の移動に伴って、ケーシング入口において外気を
巻き込み、また、ケーシングの出口において、鋼板表面
に吹付けた固体微粒子懸濁ガスを持ち出すため、所定量
の空気量と固体微粒子量の制御が困難で、理想とするミ
ニマムもしくはゼロスパングル模様の形成ができないと
いう問題も生じる。However, in an apparatus having such a casing , the zero-screw inside the casing is used.
The solid particles required for forming the pangle pattern are applied at an appropriate collision speed.
If it is not sprayed evenly with a certain degree,
The amount of body particles becomes non-uniform and
Ideal minimum or zero spangle model for moving direction
There is a problem that such formation cannot be performed. Further, as the steel sheet moves between the casings, the outside air is entrained at the casing inlet, and at the outlet of the casing, the solid fine particle suspension gas blown onto the steel sheet surface is taken out. Is difficult to control, and there is a problem that an ideal minimum or zero spangle pattern cannot be formed .
【０００６】本発明の目的は、鋼帯の移動通路の両側に
亜鉛粉末吹付けノズルを有する垂直なケーシングを設
け、このケーシング間を移動する溶融めっき済みの鋼帯
表面の液状亜鉛被覆層に空気に懸濁された固体粒子を連
続的に吹付ける装置において、所定量の空気量と固体微
粒子量の制御を容易にするための手段を提供することに
ある。An object of the present invention is to provide a vertical casing having a zinc powder spraying nozzle on both sides of a moving passage of a steel strip, and air is applied to a liquid zinc coating layer on the surface of a galvanized steel strip moving between the casings. An object of the present invention is to provide means for facilitating control of a predetermined amount of air and solid fine particles in a device for continuously spraying solid particles suspended in a liquid.
【０００７】[0007]
【課題を解決するための手段】本発明は、溶融メタルの
被覆層を有する鋼帯の移動路の両側に設けられたケーシ
ングを有し、同ケーシングの略中央部に通板鋼板の全幅
にわたって開口した固体微粒子吹付け口と、同ケーシン
グの通板入口と通板出口近傍に設けられた通板鋼板の全
幅にわたって開口した吸引口とを有する溶融めっき鋼帯
の表面処理装置において、前記の溶融めっき鋼帯の表面
処理装置における固体微粒子吹付け口の開口基部に平行
な複数のスリットを有するスリット板上に、複数本の棒
体をスリットと直交して且つ一定間隔をもって平行に配
列した整流板を設置したことにある。According to the present invention, there is provided a casing provided on both sides of a moving path of a steel strip having a coating layer of molten metal, and an opening is formed in a substantially central portion of the casing over the entire width of a steel strip. was a solid particulate blowing port, the surface treatment apparatus of the hot-dipping steel strip having a suction port which is open over the entire width of the passing steel plates provided in the sheet passing inlet and passing plate near the outlet of the casing, before Symbol melting of A straightening plate in which a plurality of rods are arranged at right angles to the slits and in parallel at regular intervals on a slit plate having a plurality of slits parallel to the opening base of the solid fine particle blowing port in the surface treatment apparatus for plated steel strips. Has been installed.
【０００８】[0008]
【作用】特定構造の整流板を使用することによって、理
想とするミニマムもしくはゼロスパングル模様の形成に
必要な固体微粒子の均一分布と適度な衝突速度を得るこ
とができる。[Action] By using the current plate of the specific structure, it is possible to obtain a uniform distribution and moderate impact velocity of the solid particles required to form the minimum or zero spangle pattern to the ideal.
【０００９】なお、ケーシングの出入口の外方位置に通
板鋼板の表面に向かって流体を噴出する流体噴出口を通
板鋼板の全幅にわたって開口させると、ケーシング入口
からの外気巻込み、出口からのガス持出しを防ぐため、
上記固体微粒子の均一分布と衝突速度がより安定化し、
望ましい。 The casing is connected to the outside of the doorway.
Through the fluid ejection port that ejects the fluid toward the surface of the steel sheet.
When opening across the entire width of the steel plate, the casing inlet
In order to prevent air from being taken in from the
The uniform distribution of the solid particles and the collision speed are more stabilized,
desirable.
【００１０】[0010]
【実施例】添付図は本発明に係る溶融めっき鋼帯の表面
処理装置の実施例を示すもので、図１は溶融めっき帯鋼
Ａの通路の両面に設けられたケーシング２の中の一側の
ケーシングの一つを溶融めっき帯鋼Ａ側から見た図であ
る。図２は図１に示すハウジング１の断面構造を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The attached drawings show an embodiment of the surface treatment apparatus for hot-dip galvanized steel strip according to the present invention. FIG. 1 shows one side of a casing 2 provided on both sides of a passage for hot-dip galvanized steel strip A. FIG. 3 is a view of one of the casings of FIG. FIG. 2 shows a sectional structure of the housing 1 shown in FIG.
【００１１】この図１および図２において、ハウジング
１内には、図示されていない溶融めっき浴から出現しつ
つある連続的な鋼板Ａに対し対称的に配置されたケーシ
ング２を有する。このケーシング２の高さ中央部には、
固体粉末を吹付けるために、鋼板Ａの進行方向に対して
直角に、全幅にわたって、通板表面から５０〜２００ｍ
ｍの間隔を置いて吹付け口３が開口している。この吹付
け口３からは、貯蔵ホッパー４に収納されている固体微
粒子が、モータ５で駆動されるブロアー６によって、計
量装置７、導管８、９を経て鋼板Ａの表面に吹付けられ
る。1 and 2, the housing 1 has a casing 2 symmetrically arranged with respect to a continuous steel plate A emerging from a hot dipping bath (not shown). At the center of the height of this casing 2,
In order to spray the solid powder, at a right angle to the traveling direction of the steel plate A, the width is 50 to 200 m from the surface of the steel plate.
The spray port 3 is opened at intervals of m. From the spray port 3, the solid fine particles stored in the storage hopper 4 are sprayed onto the surface of the steel sheet A by the blower 6 driven by the motor 5 via the measuring device 7, the conduits 8 and 9.
【００１２】また、ケーシング２の上下部には、通板鋼
板の全幅にわたって吸引口１０が開口し、鋼板Ａに対し
て吹付けられた空気と固体微粒子の残余分は、この吸引
口１０から導管１１を経て循環し、導管９を経て吹付け
口３から吹付けられる。A suction port 10 is formed in the upper and lower parts of the casing 2 over the entire width of the steel sheet passing through the steel plate A, and the residual air and solid fine particles blown against the steel sheet A is discharged from the suction port 10 through a conduit. It circulates via 11 and is sprayed from the spray port 3 via the conduit 9.
【００１３】さらに、１２はケーシング２の下部入口の
下面と上部出口の上面に、通板鋼板の全幅にわたって設
けられたガス噴出口であって、ブロアー１３から導入し
た外気を導管１４を経て鋼板Ａ表面に吹きつけて、鋼板
Ａの移動により発生する随伴ガスの装置内への侵入と固
体微粒子を含む空気の装置からの漏出を防止する。Further, reference numeral 12 denotes a gas ejection port provided on the lower surface of the lower inlet of the casing 2 and the upper surface of the upper outlet over the entire width of the steel sheet passing through the steel sheet A through the conduit 14 for the outside air introduced from the blower 13. It is sprayed on the surface to prevent intrusion of associated gas generated by the movement of the steel plate A into the apparatus and leakage of air containing solid particles from the apparatus.
【００１４】さらに、図２の断面図に示すように、ケー
シング２のそれぞれ上下の吸引口１０の通路１５にはス
リット板１６が配置され、吹付け口３の通路１７の吹付
け口の直前には、整流板１８が配置されている。Further, as shown in the cross-sectional view of FIG. 2, slit plates 16 are arranged in the passages 15 of the upper and lower suction ports 10 of the casing 2, respectively, and immediately before the blowing port of the passage 17 of the blowing port 3. A rectifying plate 18 is arranged.
【００１５】図３はこの整流板１８の正面図を示し、図
４は側面図を示す。同図に示すように、整流板１８は、
等間隔にスリット１９を穿設したスリット板２０とその
前面に等間隔に配置した断面が丸形の整流棒２１からな
る。FIG. 3 shows a front view of the current plate 18, and FIG. 4 shows a side view thereof. As shown in FIG.
The slit plate 20 is provided with slits 19 at equal intervals, and a straightening rod 21 having a round cross section is arranged on the front surface of the slit plate 20 at equal intervals.
【００１６】図５はこの整流板１８の機能を説明する図
である。同図に示すように、一旦スリット１９から噴出
した１０〜３５ｍ／秒程度の空気流が断面が円形の整流
棒２１の曲面に当たって反射した空気流が相互に干渉し
合い、スリット板２０に穿設したスリット１９から鋼板
Ａに噴出されるガス流の鋼板幅方向の噴出ガス流速を鋼
帯幅方向にほぼ均一にし、懸濁された粒径０．５〜３０
μｍ程度の固体微粒を均一に分布させ、成長直前の結晶
の均一微細化に必要で、且つ亜鉛被覆層の表面状態に悪
影響を与える凹部を形成することがない。FIG. 5 is a diagram for explaining the function of the current plate 18. As shown in the figure, the air flow of about 10 to 35 m / sec once ejected from the slit 19 hits the curved surface of the straightening bar 21 having a circular cross section, the reflected air flows interfere with each other, and the slit plate 20 is perforated. The gas flow velocity of the gas flow ejected from the slits 19 to the steel sheet A in the steel sheet width direction is made substantially uniform in the steel strip width direction, and the suspended particle diameter is 0.5 to 30.
Solid microparticles of about μm are evenly distributed, which is necessary for uniform miniaturization of crystals immediately before growth and does not form recesses that adversely affect the surface state of the zinc coating layer.
【００１７】溶融アルミめっきに本発明の装置を適用し
たところ、鋼板６００〜１２００ｍｍ、鋼板速度３０〜
１５０ｍｍ／分で５〜２０μｍの粉径分布を持つ酸化ア
ルミの微粒子を噴霧空気流量１８０Ｎｍ3／分に対し
０．５〜２．０ｋｇ／ｈｒ供給し、ガス噴出ノズルから
のガス流量を上下１５Ｎｍ3／分鋼板に対し吹付けるこ
とにより、酸化アルミの微粒子の流出による環境雰囲気
の汚染もなく、安定して鋼板表面がゼロスパングル模様
の外観を有する鋼板の製造ができた。When the apparatus of the present invention was applied to hot dip aluminum coating, the steel plate had a thickness of 600 to 1200 mm and a steel plate speed of 30 to 30 mm.
Fine particles of aluminum oxide having a particle size distribution of 5 to 20 μm at 150 mm / min were supplied at 0.5 to 2.0 kg / hr for a spray air flow rate of 180 Nm 3 / min, and the gas flow rate from the gas injection nozzle was 15 Nm 3 up and down. By spraying onto the steel sheet, it was possible to stably manufacture a steel sheet having a zero spangle pattern appearance on the surface of the steel sheet without contamination of the environmental atmosphere due to the outflow of fine particles of aluminum oxide.
【００１８】[0018]
【発明の効果】本発明によって以下の効果を奏する。According to the present invention, the following effects can be obtained.
【００１９】（１）溶融メタルめっき鋼板上に理想的な
半輝性表面を形成するために必要な固体微粒子の吹付け
条件を簡単に得ることができる。(1) It is possible to easily obtain the conditions for spraying solid fine particles necessary for forming an ideal semi-bright surface on a hot-dip galvanized steel sheet.
【００２０】（２）従来の処理装置の基本構造を変える
ことなく、簡単な設備を設けるだけで完成することがで
きる。 (2) It can be completed by providing simple equipment without changing the basic structure of the conventional processing apparatus .
【図１】 本発明の装置の通板側の概要を示す図であ
る。FIG. 1 is a diagram showing an outline of a plate passing side of an apparatus of the present invention.
【図２】 ケーシングの断面構造を示す。FIG. 2 shows a sectional structure of a casing.
【図３】 吹付ノズルの整流板の正面図である。FIG. 3 is a front view of a current plate of a spray nozzle.
【図４】 図３の整流板の側面図である。FIG. 4 is a side view of the current plate of FIG.
【図５】 整流板の機能の説明図である。FIG. 5 is an explanatory diagram of a function of a current plate.
１ ハウジング ２ ケーシング ３ 吹付け口 ４ ホッパー ５ モータ ６ ブロアー ７ 計量装置 ８，９，１１ 導管 １０ 吸引口 １２ ガス噴出口 １３ ブロアー １４ 導管 １５ 通路 １６ スリット板 １７ 吹出し口 １８ 整流板 １９ 整流板のスリット ２０ スリット板 ２１ 整流棒 1 Housing 2 Casing 3 Blowing Port 4 Hopper 5 Motor 6 Blower 7 Metering Device 8, 9, 11 Conduit 10 Suction Port 12 Gas Jet 13 Blower 14 Conduit 15 Passage 16 Slit Plate 17 Blowout Plate 18 Straightening Plate 19 Slitting Plate 20 slit plate 21 straightening rod
───────────────────────────────────────────────────── フロントページの続き (72)発明者 冨永 一己 福岡県北九州市戸畑区飛幡町１番１号 新日本製鐵株式会社 八幡製鐵所内 (56)参考文献 特開 昭62−133057（ＪＰ，Ａ) 実開 平３−125058（ＪＰ，Ｕ) 特公 昭60−47345（ＪＰ，Ｂ２) 特公 昭50−25421（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazumi Tominaga 1-1 No. 1 Tobita-cho, Tobata-ku, Kitakyushu, Fukuoka Prefecture Nippon Steel Corporation Yawata Works (56) Reference JP 62-133057 (JP, JP, A) Actual Kaihei 3-125058 (JP, U) JP 60-47345 (JP, B2) JP 50-50421 (JP, B2)
Claims (1)
路の両側に設けられた一対のケーシングを有し、それぞ
れのケーシングの通板側の略中央部に通板鋼板の全幅に
わたって開口した固体微粒子吹付け口と、通板入口と通
板出口近傍に設けられた通板鋼板の全幅にわたって開口
した吸引口とを有する溶融めっき鋼帯の表面処理装置に
おいて、 前記固体微粒子吹付け口の開口基部に平行な複数のスリ
ットを有するスリット板上に、複数本の棒体をスリット
と直交して且つ一定間隔をもって平行に配列した整流板
を設置した溶融めっき鋼帯の表面処理装置。1. A pair of casings are provided on both sides of a moving path of a steel strip having a coating layer of molten metal, and the casings are opened at approximately the center on the passage side over the entire width of the passing steel plate. In a surface treatment apparatus for a hot-dip galvanized steel strip having a solid fine particle spraying port, and a suction port opened over the entire width of the strip steel plate provided in the vicinity of the plate passing inlet and the plate passing outlet , the opening of the solid fine particle spraying port Multiple pickpockets parallel to the base
Slit multiple rods on a slit plate
Straightening plates arranged at right angles to each other and in parallel at regular intervals
Installation molten plated steel strip surface treatment apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3272605A JP2558402B2 (en) | 1991-10-21 | 1991-10-21 | Surface treatment equipment for hot-dip galvanized steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3272605A JP2558402B2 (en) | 1991-10-21 | 1991-10-21 | Surface treatment equipment for hot-dip galvanized steel strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05112860A JPH05112860A (en) | 1993-05-07 |
| JP2558402B2 true JP2558402B2 (en) | 1996-11-27 |
Family
ID=17516260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3272605A Expired - Lifetime JP2558402B2 (en) | 1991-10-21 | 1991-10-21 | Surface treatment equipment for hot-dip galvanized steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2558402B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5025421A (en) * | 1973-07-09 | 1975-03-18 | ||
| JPS6047345A (en) * | 1983-08-26 | 1985-03-14 | Hitachi Ltd | Cathode-ray tube |
-
1991
- 1991-10-21 JP JP3272605A patent/JP2558402B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05112860A (en) | 1993-05-07 |
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