JP6555443B1 - ガスワイピングノズルの製造方法及びガスワイピングノズル - Google Patents
ガスワイピングノズルの製造方法及びガスワイピングノズル Download PDFInfo
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- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
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- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
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- 239000008397 galvanized steel Substances 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
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- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
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- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
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- B05B1/044—Slits, i.e. narrow openings defined by two straight and parallel lips; Elongated outlets for producing very wide discharges, e.g. fluid curtains
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/50—Controlling or regulating the coating processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Description
D≦0.25×B ・・・(1)
ただし、
D:前記嵌合突起と前記嵌合孔との間の前記鋼帯の厚み方向の隙間[mm]
B:前記スリットのスリットギャップ[mm]
L1≧φ1+20×10−6×ΔT×W ・・・(2)
ただし、
L1:前記第2の嵌合孔の前記鋼帯の幅方向の長さ[mm]
φ1:前記第2の嵌合突起の直径[mm]
ΔT:前記一方のリップ部と前記他方のリップ部との間の温度差[K]
W:前記一対のリップ部の前記鋼帯の幅方向の長さ[mm]
D≦0.25×B ・・・(1)
ただし、
D:前記嵌合突起と前記嵌合孔との間の前記鋼帯の厚み方向の隙間
B:前記スリットのスリットギャップ
まず、図1を参照して、本発明の実施形態に係る連続溶融金属めっき装置1の構成について説明する。図1は、本実施形態に係る連続溶融金属めっき装置1の概略構成の一例を示す模式図である。
続いて、図2〜図4を参照して、本実施形態に係るガスワイピングノズル10の構成について説明する。図2は、本実施形態に係るガスワイピングノズル10の一例を示す斜視図である。図3は、本実施形態に係るガスワイピングノズル10の一例を示す分解斜視図である。図4は、本実施形態に係るガスワイピングノズル10の一例を示す断面図である。具体的には、図4は、図2に示したA−A断面についての断面図である。A−A断面は、鋼帯2の幅方向に直交し、スリット140を通る断面である。
続いて、図5〜図9を参照して、本実施形態に係るガスワイピングノズル10の製造方法について説明する。
続いて、図10〜図16を参照して、変形例について説明する。
まず、図10〜図13を参照して、変形例に係るガスワイピングノズル20の構成について説明する。
続いて、図14及び図15を参照して、変形例に係るガスワイピングノズル20の製造方法について説明する。
以上説明したように、本実施形態に係るガスワイピングノズル10の製造方法は、一方のリップ部に設けられる嵌合突起を他方のリップ部に設けられる嵌合孔に嵌合する嵌合工程と、嵌合突起が嵌合孔に嵌合された嵌合状態で一対のリップ部を互いに固定する固定工程とを含む。ここで、嵌合状態において、一対のリップ部の間での鋼帯2の厚み方向の相対的な移動は規制される。具体的には、嵌合突起及び嵌合孔は、鋼帯2の幅方向に間隔を空けて2対(嵌合突起と嵌合孔の対が合計して2対)設けられていることによって、嵌合状態において一対のリップ部の間での鋼帯2の厚み方向の相対的な移動を規制することが実現される。また、嵌合状態において、嵌合突起と嵌合孔との間の鋼帯2の厚み方向の隙間Dが式(1)を満たす。それにより、嵌合状態における一対のリップ部の間での鋼帯2の厚み方向の相対的な移動を適切に規制することができる。よって、一対のリップ部の間での鋼帯2の厚み方向の相対的な位置関係がガスワイピングノズル10の組み立てに起因してばらつくことを抑制することができる。ゆえに、鋼帯2に対するガスの衝突圧力がばらつくことを抑制することができるので、鋼帯2に対する溶融金属の目付量を安定化することができる。
2 鋼帯
3 めっき浴
4 めっき槽
5 スナウト
6 シンクロール
7,8 サポートロール
9 トップロール
10,20,30 ガスワイピングノズル
110,210 上リップ部
118a,118b ピン挿入孔
120,220,320 下リップ部
128a,128b ピン固定孔
130,230 シム
138a,138b ピン挿通孔
140 スリット
151,152 ピン
191 ノズル室
192 ガスヘッダ室
218a,218b 凹部
228a,228b,328a 凸部
238a,238b 凸部挿通孔
Claims (9)
- 互いに対向して設けられる一対のリップ部及び前記一対のリップ部の間にガスの噴出口として形成されるスリットを備え、溶融金属めっき浴から上方に引き上げられた鋼帯に対して前記スリットから前記ガスを吹き付けることにより、前記鋼帯の表面に付着した溶融金属膜の膜厚を調節するガスワイピングノズルの製造方法であって、
一方の前記リップ部に固定されている嵌合突起を他方の前記リップ部に設けられる嵌合孔に嵌合する嵌合工程と、
前記嵌合突起が前記嵌合孔に嵌合された嵌合状態で、前記一対のリップ部を互いに固定する固定工程と、
を含み、
前記嵌合突起及び前記嵌合孔は、前記鋼帯の幅方向に間隔を空けて2対設けられており、
前記嵌合状態において、前記一対のリップ部の間での前記鋼帯の厚み方向の相対的な移動は規制され、前記嵌合突起と前記嵌合孔との間の前記鋼帯の厚み方向の隙間は下記式(1)を満たす、
ガスワイピングノズルの製造方法。
D≦0.25×B ・・・(1)
ただし、
D:前記嵌合突起と前記嵌合孔との間の前記鋼帯の厚み方向の隙間[mm]
B:前記スリットのスリットギャップ[mm] - 前記嵌合突起は、第1の嵌合突起及び第2の嵌合突起を含み、
前記嵌合孔は、前記第1の嵌合突起及び前記第2の嵌合突起がそれぞれ嵌合される第1の嵌合孔及び第2の嵌合孔を含み、
前記第1の嵌合突起及び前記第2の嵌合突起の横断面形状は、円形であり、
前記第1の嵌合孔は、丸孔であり、
前記第2の嵌合孔は、前記鋼帯の厚み方向よりも前記鋼帯の幅方向に長い長孔である、
請求項1に記載のガスワイピングノズルの製造方法。 - 前記第2の嵌合孔の前記鋼帯の幅方向の長さは、下記式(2)を満たす、
請求項2に記載のガスワイピングノズルの製造方法。
L1≧φ1+20×10−6×ΔT×W ・・・(2)
ただし、
L1:前記第2の嵌合孔の前記鋼帯の幅方向の長さ[mm]
φ1:前記第2の嵌合突起の直径[mm]
ΔT:前記一方のリップ部と前記他方のリップ部との間の温度差[K]
W:前記一対のリップ部の前記鋼帯の幅方向の長さ[mm] - 前記第1の嵌合突起の突出長さは、前記第2の嵌合突起の突出長さと比較して長く、
前記嵌合工程において、前記第1の嵌合突起の先端部が前記第1の嵌合孔に挿入され、その後、前記第1の嵌合突起及び前記第2の嵌合突起がそれぞれ前記第1の嵌合孔及び前記第2の嵌合孔に嵌合される、
請求項2又は3に記載のガスワイピングノズルの製造方法。 - 前記嵌合突起は、前記一対のリップ部の対向方向に前記一方のリップ部に貫通して設けられるピン固定孔に取り付けられるピンを含み、
前記嵌合孔は、前記一対のリップ部の対向方向に前記他方のリップ部に貫通して設けられるピン挿入孔を含む、
請求項1〜4のいずれか一項に記載のガスワイピングノズルの製造方法。 - 前記ピンの材質と前記一対のリップ部の材質は、同一である、
請求項5に記載のガスワイピングノズルの製造方法。 - 前記嵌合突起は、前記一方のリップ部における前記他方のリップ部側の面に設けられる凸部を含み、
前記嵌合孔は、前記他方のリップ部における前記一方のリップ部側の面に設けられる凹部を含む、
請求項1〜6のいずれか一項に記載のガスワイピングノズルの製造方法。 - 前記凸部は、頂部へ向かうにつれて横断面積が小さくなるテーパ形状を有し、
前記凹部は、底部へ向かうにつれて横断面積が小さくなるテーパ形状を有する、
請求項7に記載のガスワイピングノズルの製造方法。 - 互いに対向して設けられる一対のリップ部及び前記一対のリップ部の間にガスの噴出口として形成されるスリットを備え、溶融金属めっき浴から上方に引き上げられた鋼帯に対して前記スリットから前記ガスを吹き付けることにより、前記鋼帯の表面に付着した溶融金属膜の膜厚を調節するガスワイピングノズルであって、
一方の前記リップ部には、嵌合突起が固定されており、
他方の前記リップ部には、前記嵌合突起が嵌合されている嵌合孔が設けられ、
前記嵌合突起及び前記嵌合孔は、前記鋼帯の幅方向に間隔を空けて2対設けられており、
前記嵌合突起と前記嵌合孔との間の前記鋼帯の厚み方向の隙間は、下記式(1)を満たす、
ガスワイピングノズル。
D≦0.25×B ・・・(1)
ただし、
D:前記嵌合突起と前記嵌合孔との間の前記鋼帯の厚み方向の隙間
B:前記スリットのスリットギャップ
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