JPH01222043A - Manufacture of vapor deposited galvanized sheet steel having excellent galvanizing adhesion - Google Patents
Manufacture of vapor deposited galvanized sheet steel having excellent galvanizing adhesionInfo
- Publication number
- JPH01222043A JPH01222043A JP4434188A JP4434188A JPH01222043A JP H01222043 A JPH01222043 A JP H01222043A JP 4434188 A JP4434188 A JP 4434188A JP 4434188 A JP4434188 A JP 4434188A JP H01222043 A JPH01222043 A JP H01222043A
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- furnace
- vapor
- galvanizing
- zinc
- 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 80
- 239000010959 steel Substances 0.000 title claims abstract description 80
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000005246 galvanizing Methods 0.000 title abstract description 50
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 37
- 239000011701 zinc Substances 0.000 claims abstract description 37
- 239000007789 gas Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 32
- 239000000567 combustion gas Substances 0.000 claims abstract description 18
- 239000010731 rolling oil Substances 0.000 claims abstract description 8
- 238000000151 deposition Methods 0.000 claims description 23
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 10
- 239000008397 galvanized steel Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000001704 evaporation Methods 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 abstract description 29
- 238000007740 vapor deposition Methods 0.000 abstract description 21
- 230000003213 activating effect Effects 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 238000007747 plating Methods 0.000 description 45
- 230000008021 deposition Effects 0.000 description 15
- 238000000137 annealing Methods 0.000 description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 238000002203 pretreatment Methods 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Substances [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 238000010894 electron beam technology Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- 229920000298 Cellophane Polymers 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 210000004894 snout Anatomy 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- -1 argon ions Chemical class 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- 238000007738 vacuum evaporation Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- QNDQILQPPKQROV-UHFFFAOYSA-N dizinc Chemical compound [Zn]=[Zn] QNDQILQPPKQROV-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001612 separation test Methods 0.000 description 1
Landscapes
- Physical Vapour Deposition (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はめっき密着性に優れた蒸着亜鉛めっき鋼板の製
造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a vapor-deposited galvanized steel sheet with excellent plating adhesion.
（従来の技術）
鋼板の表面に亜鉛をめっきした亜鉛めっき鋼板は、亜鉛
の犠牲防食作業により耐食性が鋼板のままよりも優れて
おり、また、比較的安価に製造できるため、さまざまな
用途に使用されている。この亜鉛めっき鋼板を連続的に
製造する方法としては、従来、溶融亜鉛中に鋼帯を浸漬
してめっきする溶融亜鉛めっき法と、めっき溶液中に鋼
帯を浸漬し、電気化学的に亜鉛を鋼帯表面に析出させて
めっきする電気めっき法があった。(Conventional technology) Galvanized steel sheets, which are steel sheets whose surfaces are plated with zinc, have better corrosion resistance than steel sheets due to the sacrificial anticorrosion treatment of zinc, and can be manufactured at relatively low cost, so they are used for a variety of purposes. has been done. Conventionally, methods for continuously manufacturing galvanized steel sheets include hot-dip galvanizing, in which the steel strip is immersed in molten zinc, and zinc is electrochemically applied by immersing the steel strip in a plating solution. There was an electroplating method that deposited and plated on the surface of a steel strip.
溶融亜鉛めっき法ではめっき付着量を、通常、ガスワイ
ピング法で制御するため、現在の技術ではめっき付着量
的３０ｇ／ｒｒ？（片面）以下の薄めつきが困難である
。また、鋼帯の板幅方向と長手方向のめっき付着量の均
一性が電気亜鉛めっき法よりも劣る。電気亜鉛めっき法
ではめっき付着量の増加にともなって生産性が低下し、
厚めつきではコスト高になる。さらに、溶融亜鉛めっき
法、電気亜鉛めっき法とも片面、めっき、差厚めつきが
困難である。これらのめっき方法の欠点を解決するため
、蒸着亜鉛めっき法が開発され、実用化されている。In the hot-dip galvanizing method, the amount of plating deposited is usually controlled by a gas wiping method, so with the current technology, the amount of plating deposited is 30g/rr? (One side) It is difficult to dilute the following. Furthermore, the uniformity of the coating amount in the width direction and longitudinal direction of the steel strip is inferior to that of the electrogalvanizing method. In the electrogalvanizing method, productivity decreases as the amount of plating increases.
The thicker the material, the higher the cost. Furthermore, it is difficult to perform single-sided plating or differential thickness plating with both the hot-dip galvanizing method and the electrogalvanizing method. In order to solve the drawbacks of these plating methods, a vapor deposition galvanizing method has been developed and put into practical use.
蒸着亜鉛めっき法によ九ば、めっき付着量が０〜９０ｇ
／ ｒｄまでの両面９片面および差厚めつきが可能であ
り、鋼帯の板幅方向と長手方向のめっき付着量の均一性
も電気亜鉛めっき法と同等である。また、薄めつきも高
速で行なえる。Depending on the vapor deposition galvanizing method, the coating weight is 0 to 90g.
/rd, double-sided, single-sided, and differential thickness plating is possible, and the uniformity of the coating amount in the width direction and longitudinal direction of the steel strip is equivalent to that of electrogalvanizing. Also, thinning can be done at high speed.
蒸着亜鉛めっき法でめっき密着性に優れた亜鉛めっき鋼
板を連続的に製造するには、亜鉛を蒸着する前に鋼帯表
面に付着した圧延油等を除去し。In order to continuously produce galvanized steel sheets with excellent coating adhesion using the vapor deposition galvanizing method, rolling oil etc. adhering to the steel strip surface must be removed before zinc is vapor deposited.
鋼帯表面の酸化膜を還元し、清浄、活性化しなければな
らない。そして、活性化された表面が酸化されることな
く鋼帯を真空中に導入し、鋼帯の表面温度１５０〜３５
０℃で亜鉛を蒸着しなければならない、 鋼帯表面を連
続的に清浄、活性化する前処理方法としては真空中での
電子ビーム加熱法、アルゴンイオン等によるスパッタリ
ング法、ブラッシング法等がある。しかし、電子ビーム
加熱法では少なくともＯ，０Ｏ１ｔｏｒｒ以下の真空圧
に排気する必要がある。連続的に鋼帯表面を電子ビーム
で加熱した後、蒸着する装置としては、コイルごと真空
容器内に挿入し、真空容器内を０．００１ｔｏｒｒ以下
の真空圧に排気する形式の装置がある。しかし、このよ
うな装置では、一つのコイルごとに真空排気しなければ
ならず、また、亜鉛蒸着後、真空容器内を大気圧に戻し
てコイルを取り出さなければならず、生産性が低い。ア
ルゴンイオン等によるスパッタリング法ではスパッタリ
ング速度が遅いことや、電子ビーム加熱法と同様の形式
の装置となり、生産性が低い。また、ブラッシング法で
は銅帯表面をブラッシングした時に生成する鉄粉を回収
する必要があり、装置が複雑になる。The oxide film on the surface of the steel strip must be reduced, cleaned, and activated. Then, the steel strip is introduced into a vacuum without the activated surface being oxidized, and the surface temperature of the steel strip is 150 to 35.
Pretreatment methods for continuously cleaning and activating the surface of the steel strip, in which zinc must be deposited at 0°C, include electron beam heating in a vacuum, sputtering using argon ions, etc., and brushing. However, in the electron beam heating method, it is necessary to evacuate to a vacuum pressure of at least 0.001 torr or less. As an apparatus for continuously heating the surface of a steel strip with an electron beam and then vapor depositing the same, there is an apparatus in which the entire coil is inserted into a vacuum vessel and the inside of the vacuum vessel is evacuated to a vacuum pressure of 0.001 torr or less. However, in such an apparatus, each coil must be evacuated, and after zinc evaporation, the inside of the vacuum container must be returned to atmospheric pressure and the coil must be taken out, resulting in low productivity. A sputtering method using argon ions or the like has a slow sputtering speed and requires a similar type of equipment as an electron beam heating method, resulting in low productivity. Furthermore, in the brushing method, it is necessary to collect iron powder generated when brushing the surface of the copper strip, which makes the apparatus complicated.
簡便に鋼帯表面を連続的に清浄、活性化し、亜鉛蒸着し
てめっき密着性に優れた蒸着亜鉛めっき鋼板を製造する
装置としては、特開昭６ｌ−７９７５５（特願昭５９−
２０１４２３）に示されている装置がある。A device for easily and continuously cleaning and activating the surface of a steel strip and depositing zinc on it to produce a vapor-deposited galvanized steel sheet with excellent plating adhesion is disclosed in Japanese Patent Application Laid-Open No. 61-79755 (Japanese Patent Application No. 1983-1999).
There is a device shown in 201423).
この装置は水平型の弱酸他炉方式のガス還元・焼鈍炉の
冷却部の出口側を溶融亜鉛めっき装置と真空蒸着亜鉛め
っき装置のシールロール室の入口の何れにも接続できる
ようにした溶融亜鉛めっきと蒸着亜鉛めっきの兼用装置
である。この装置ではガス還元焼鈍の炉の冷却部とシー
ルロール室との間に賦圧室が設けられており、冷却部よ
りも高い圧力となるように窒素ガスあるいはアルゴンガ
スな導入して、冷却部からの水素を含むガスが蒸着亜鉛
めっき装置側へ流入し、真空が破れた場合、爆発するの
を防止している。This device is a molten zinc plating device that allows the outlet side of the cooling section of a horizontal weak acid type gas reduction/annealing furnace to be connected to either the inlet of the seal roll chamber of a hot-dip galvanizing device or a vacuum evaporation galvanizing device. This equipment is used for both plating and vapor deposition galvanizing. In this equipment, a pressure chamber is provided between the cooling section of the gas reduction annealing furnace and the seal roll chamber, and nitrogen gas or argon gas is introduced so that the pressure is higher than that of the cooling section. This prevents hydrogen-containing gas from flowing into the evaporative galvanizing equipment and causing an explosion if the vacuum is broken.
上記の装置によれば鋼帯表面に付着した圧延油等は弱酸
化炉内で除去され５表面の酸化膜はガス還元・焼鈍炉内
の５０〜７５％Ｈ，−Ｎ、ガスで還元され、活性化する
。そして、鋼帯表面が活性なまま蒸着室に導入されて亜
鉛蒸着されるため、めっき密着性は良好である。また、
溶融亜鉛めっきから蒸着亜鉛めっきへの切り替えやその
逆も容易に行なうことができる。さらに、コイルごとに
真空排気する必要がなく、連続的に鋼帯を装置内へ挿入
することができ、電子ビーム加熱法、スパッタリング法
に比べて生産性が高い。According to the above-mentioned apparatus, rolling oil etc. adhering to the steel strip surface is removed in a weak oxidation furnace, and the oxide film on the surface is reduced with 50 to 75% H, -N, gas in a gas reduction/annealing furnace. Activate. Since the surface of the steel strip is introduced into the deposition chamber while being active and zinc is deposited, the plating adhesion is good. Also,
Switching from hot-dip galvanizing to vapor-deposited galvanizing and vice versa can be easily performed. Furthermore, there is no need to evacuate each coil, and the steel strip can be continuously inserted into the apparatus, resulting in higher productivity than the electron beam heating method or sputtering method.
しかし、上記の装置では以下に示す問題点がある。However, the above device has the following problems.
（１）ガス還元・焼鈍炉と冷却部の両方に５０〜７５％
Ｈ２の高濃度Ｈ，−Ｎ２雰囲気ガスを導入するため、雰
囲気ガスの使用量は約２７ＯＮｍ’ ／ｈと多く、製造
コストが高い。(1) 50-75% for both gas reduction/annealing furnace and cooling section
Since a high-concentration H, -N2 atmospheric gas is introduced, the amount of atmospheric gas used is as large as about 27 ONm'/h, and the manufacturing cost is high.
（２）水平型の弱酸他炉方式のガス還元・焼鈍炉を備え
た連続式溶融亜鉛めっき装置の全長は通常約２００ｍ
と長く、シールロール室と蒸着室を連結すると装置全体
の長さは約２５０ ｍ となり、装置自体が大型化し、
装置の設置面積が大きくなる。したがって、上記装置を
設置できる場所は限定され、装置作製に要する費用は多
大となる。(2) The total length of a continuous hot-dip galvanizing equipment equipped with a horizontal weak acid type gas reduction/annealing furnace is usually approximately 200 m.
If the seal roll chamber and vapor deposition chamber are connected, the total length of the device will be approximately 250 m, making the device itself large.
The installation area of the device becomes larger. Therefore, the places where the above device can be installed are limited, and the cost required for manufacturing the device is large.
（３）装置の全長が約２５０ｍであり、銅帯が弱酸化炉
内に導入されてから亜鉛蒸着されるまでの所要時間は通
板速度約１００ ｍ ／ｗｉｎで約２分３０秒と長い。(3) The total length of the apparatus is approximately 250 m, and the time required from the time the copper strip is introduced into the weak oxidation furnace until the zinc evaporation is performed is as long as approximately 2 minutes and 30 seconds at a strip passing rate of approximately 100 m/win.
（発明が解決しようとする問題点）
上記のような、従来から行なわれている蒸着亜鉛めっき
の前処理法では多量の高濃度Ｈ，−Ｎ、雰囲気ガスを消
費するため生産コストが高い。また多大の装置設置面積
を必要とし、装置が高価でかつ生産性が低い６本発明は
上記問題点を解決し、小型の安価な装置で生産性よく低
コストでめっき密着性に優れた蒸着亜鉛めっき鋼板を製
造するものである。(Problems to be Solved by the Invention) The conventional pretreatment method for vapor deposited galvanizing as described above consumes a large amount of high concentration H, -N, and atmospheric gas, resulting in high production costs. In addition, a large amount of installation space is required, the equipment is expensive, and productivity is low. 6 The present invention solves the above problems, and uses a small and inexpensive equipment to produce evaporated zinc with high productivity and excellent plating adhesion at low cost. It manufactures plated steel sheets.
（問題解決の手段）
カップバーナーを用いた炉の出口側に連続式の蒸着亜鉛
めっき装置を連結することによって上記の問題点は解決
される５
（発明の構成）
本発明はカップバーナーを用いた炉内で鋼帯表面に付着
した圧延油等を除去し、鋼帯表面の酸化物を還元、除去
して鋼帯表面を活性化した後、亜鉛蒸着することを特徴
とする蒸着亜鉛めっき鋼板の製造方法を提供する。(Means for solving the problem) The above problems are solved by connecting a continuous vapor deposition galvanizing device to the outlet side of a furnace using a cup burner.5 (Structure of the invention) The present invention uses a cup burner. A vapor-deposited galvanized steel sheet characterized by removing rolling oil etc. adhering to the surface of the steel strip in a furnace, reducing and removing oxides on the surface of the steel strip to activate the surface of the steel strip, and then depositing zinc. A manufacturing method is provided.
本発明の方法においてはカップバーナーを用いた炉を使
用するが、竪型のものが好ましい。本発明の装置は目下
のところ亜鉛およびアルミニウムの真空蒸着めっきに利
用可能であるが、将来における用途を限定されるもので
はない６
本発明の方法において、炉の燃焼ガス成分中のＣｏ ＋
Ｈ，の濃度は０〜１５％であることが好ましい。In the method of the present invention, a furnace using a cup burner is used, and a vertical furnace is preferred. Although the apparatus of the present invention can currently be used for vacuum evaporation plating of zinc and aluminum, it is not intended to limit its use in the future.6 In the method of the present invention, Co +
The concentration of H is preferably 0 to 15%.
また炉内の燃焼ガスの温度は好ましくは１０００〜１６
００℃であり、炉内での鋼帯加熱温度は好ましくは５０
０〜８００℃である。また好適な実施態様においては鋼
帯は炉内で加熱後に接続用ダクト中でＨｚ２〜７５％を
含むＮ２ガス中で処理される。Also, the temperature of the combustion gas in the furnace is preferably 1000 to 16
00°C, and the steel strip heating temperature in the furnace is preferably 50°C.
The temperature is 0 to 800°C. In a preferred embodiment, the steel strip is heated in a furnace and then treated in a connecting duct in N2 gas containing 2 to 75% Hz.
真空蒸着時の鋼帯の温度は好ましくは１５０〜３５０℃
である。The temperature of the steel strip during vacuum deposition is preferably 150 to 350°C.
It is.
本発明の装置のうち真空蒸着部の構造１機能、操作は前
特開昭６１−７９７５５に開示されている。カップバー
ナーを用いる炉は公知である。ジーラス炉と称せられる
ものがよく知られている６ただしこれは竪型である。The structure, function, and operation of the vacuum deposition section of the apparatus of the present invention are disclosed in the former Japanese Patent Application Laid-Open No. 61-79755. Furnaces using cup burners are known. A well-known type of furnace is the so-called Zealous furnace.6 However, this furnace is vertical.
（発明の好適実施態様）
添付第１図において、■の部分は竪型炉方式の溶融亜鉛
めっき装置である。竪型炉２には図示されないカップバ
ーナーが複数個、縦と横に配置されている。カップバー
ナーには空気と燃料ガス（例えばブタンガス）の量比（
空気／燃料ガス、以下、空燃比と称す）が１以下となる
ように混合されたガスが供給され、燃焼するようになっ
ている。(Preferred Embodiment of the Invention) In the attached FIG. 1, the part marked (■) is a vertical furnace type hot-dip galvanizing apparatus. In the vertical furnace 2, a plurality of cup burners (not shown) are arranged vertically and horizontally. The cup burner has a ratio of air to fuel gas (e.g. butane gas)
Gas mixed so that the air/fuel gas (hereinafter referred to as air-fuel ratio) is 1 or less is supplied and combusted.
空燃比が１以下では燃焼ガス中にＣＯとＨ２を含み。When the air-fuel ratio is less than 1, the combustion gas contains CO and H2.
還元性雰囲気となる。燃焼ガス中のＣＯ＋ ８２濃度が
０．５〜１５％、燃焼ガス温度１０００〜１６００℃、
鋼帯の表面温度５００〜８００℃の場合、鋼帯表面に付
着した圧延油等が除去され、ｍ布表面の酸化物が還元さ
れ、＃Ａ帯衣表面活性化する。冷却部３ではＨ２を２〜
７５％含むＮ２ガスが導入されており、鋼帯を冷却する
とともに竪型炉２内で清浄、活性化したままの鋼帯表面
を保持するようになっている。冷却部３は電気抵抗加熱
装置あるいはラジアントチューブ方式の加熱装置等によ
り、鋼帯１を加熱することもできる０本装置でＨ２を含
む雰囲気ガスを必要とするのは冷却部３のみである。冷
却部３で表面温度が約４５０℃に温度制御された鋼帯１
はスナウト４を経て、亜鉛めっき浴５に浸漬され、亜鉛
めっきされる。このような装置は例えば、「溶融亜鉛め
っき、塗装」 （学校法人鉄鋼短期大学、昭和５７年刊
）の１６頁に記載されて当業者間に公知である。A reducing atmosphere is created. The CO+ 82 concentration in the combustion gas is 0.5-15%, the combustion gas temperature is 1000-1600℃,
When the surface temperature of the steel strip is 500 to 800° C., rolling oil and the like adhering to the surface of the steel strip are removed, oxides on the surface of the m cloth are reduced, and the surface of the #A cloth is activated. In the cooling section 3, H2 is
N2 gas containing 75% N2 gas is introduced to cool the steel strip and keep the surface of the steel strip clean and activated within the vertical furnace 2. The cooling section 3 is an electric resistance heating device or a radiant tube type heating device, etc., which can also heat the steel strip 1, and only the cooling section 3 requires an atmospheric gas containing H2. Steel strip 1 whose surface temperature is controlled to about 450°C in cooling section 3
passes through the snout 4, is immersed in a galvanizing bath 5, and is galvanized. Such an apparatus is known to those skilled in the art, for example, as described on page 16 of "Hot-dip Galvanizing and Painting" (published by Tekko Junior College of Education, 1982).
■の部分は連続式の蒸着亜鉛めっき装置である。The part (2) is a continuous type evaporation galvanizing equipment.
連続式の蒸着亜鉛めっき装置は最近いくつかの様式が提
案されているが、ここに例示するのは特開昭６１−７９
７５５に示されている装置である。本装置は連結ダクト
７を介して竪型炉方式の溶融亜鉛めっき装置の出口側６
に連結されている。賦圧室８には窒素ガスあるいはアル
ゴンガスが導入され、竪型炉方式の溶融亜鉛めっき装置
の冷却部３よりも圧力が高くなっており、冷却部３から
のＨ２を含むＮ２ガスが蒸着室１０に流入しないように
なっている。Several types of continuous vapor deposition galvanizing equipment have recently been proposed, but the one exemplified here is the one developed in Japanese Patent Application Laid-Open No. 61-79.
755. This device is connected to the outlet side 6 of a vertical furnace type hot-dip galvanizing device through a connecting duct 7.
is connected to. Nitrogen gas or argon gas is introduced into the pressurization chamber 8, and the pressure is higher than that in the cooling section 3 of the vertical furnace type hot-dip galvanizing apparatus, and the N2 gas containing H2 from the cooling section 3 flows into the deposition chamber. 10.
蒸着室１０の前にシールロール室９が、蒸着室１０’の
後にシールロール室９′が、蒸着室１０．１０’の間に
中間シールロール室１１が設けられている。各シールロ
ール室９ 、９ ’、１１と蒸着室１０．１０’は図示
されない排気装置で排気され、蒸着室１０．１０’内の
真空圧が０．１ｔｏｒｒ以下となるようになっている。A seal roll chamber 9 is provided in front of the deposition chamber 10, a seal roll chamber 9' is provided after the deposition chamber 10', and an intermediate seal roll chamber 11 is provided between the deposition chambers 10 and 10'. Each of the seal roll chambers 9, 9', and 11 and the deposition chamber 10.10' are evacuated by an exhaust device (not shown) so that the vacuum pressure within the deposition chamber 10.10' is 0.1 torr or less.
蒸着室１０．１０’には図示されない供給源から亜鉛蒸
気が供給され、蒸着亜鉛めっきするようになっている。Zinc vapor is supplied to the deposition chamber 10.10' from a source not shown, so that the deposition chamber 10.10' can be deposited with zinc.
なお、片面めっきの場合はいずれか一つの蒸着室のみ使
用すればよい。In addition, in the case of single-sided plating, it is sufficient to use only one of the deposition chambers.
溶融亜鉛めっきする場合、鋼帯１は竪型炉２に導入され
、表面温度が５００〜８００℃に加熱され１表面に付着
している圧延油等が焼鈍、除去されるとともに表面の酸
化膜が還元され、活性化する。その後、網帯は冷却部３
に導入され、表面温度が約４５０℃に温度制御された後
、スナウト４を経て。In the case of hot-dip galvanizing, the steel strip 1 is introduced into the vertical furnace 2, where the surface temperature is heated to 500 to 800°C, and rolling oil etc. adhering to the surface of the steel strip 1 is annealed and removed, and the oxide film on the surface is removed. Reduced and activated. After that, the mesh belt is in the cooling section 3.
After the surface temperature is controlled to about 450°C, it passes through snout 4.
亜鉛浴５に浸漬され、亜鉛めっきされる。この場合、蒸
着亜鉛めっき装置■は連結ダクト７の部分で切り放され
ており、亜鉛めっきされた鋼帯１は上方に導かれ処理さ
れる。It is immersed in a zinc bath 5 and galvanized. In this case, the vapor-deposited galvanizing apparatus (1) is cut off at the connecting duct 7, and the galvanized steel strip 1 is guided upward and treated.
蒸着亜鉛めっきする場合、蒸着亜鉛めっき装置■は竪型
炉方式の溶融亜鉛めっき装置Ｉの出口側６に連結ダクト
７を介して連結される。鋼帯は溶融亜鉛めっきの場合と
同様、竪型炉２内で加熱された後、冷却部３を経て蒸着
亜鉛めっき装置■に導入される。この時、鋼帯１は蒸着
亜鉛めっき装置■に導入される時点の表面温度が約４５
０℃となるように冷却部３で冷却あるいは加熱される。In the case of vapor deposited galvanizing, the vapor deposited galvanizing apparatus 1 is connected to the outlet side 6 of the vertical furnace type hot dip galvanizing apparatus I via a connecting duct 7. As in the case of hot-dip galvanizing, the steel strip is heated in the vertical furnace 2 and then introduced into the vapor deposition galvanizing apparatus (2) via the cooling section 3. At this time, the steel strip 1 has a surface temperature of approximately 45
It is cooled or heated in the cooling section 3 so that the temperature becomes 0°C.
連結ダクト７、賦圧室８、シールロール室９を経て蒸着
室ｌＯに導入された時点で鋼帯１の表面温度は１５０〜
３５０℃まで降下しており、蒸着された亜鉛が鋼帯表面
から再び蒸発する再蒸発現象を起こすことなく蒸着亜鉛
めっきされる。蒸着された亜鉛原子の潜熱により、鋼帯
温度が上昇し、蒸着亜鉛めっきされていない面の表面温
度は２００〜４００℃まで上昇する。しかし、鋼帯１が
中間シールロール室１１を経て、蒸着室１０′に導入さ
れる間に蒸着亜鉛めっきされていない面の表面温度は１
５０〜３５０℃まで降下しており、再蒸発現象を起こす
ことなく蒸着亜鉛めっきされる。なお、片面亜鉛めっき
する場合はどちらか一方の面のみ蒸着亜鉛めっきすれば
よい。蒸着亜鉛めっき後、銅帯はシールロール室９′を
経て、大気中に導出される。The surface temperature of the steel strip 1 is 150 to 100℃ when it is introduced into the vapor deposition chamber IO via the connection duct 7, the pressure chamber 8, and the seal roll chamber 9.
The temperature is lowered to 350°C, and the deposited zinc can be deposited without causing a re-evaporation phenomenon in which the deposited zinc evaporates from the surface of the steel strip again. Due to the latent heat of the deposited zinc atoms, the temperature of the steel strip increases, and the surface temperature of the non-deposited galvanized surface increases to 200-400°C. However, while the steel strip 1 passes through the intermediate seal roll chamber 11 and is introduced into the deposition chamber 10', the surface temperature of the surface that is not coated with vapor deposited zinc is 1.
The temperature is lowered to 50-350°C, and vapor deposited zinc plating can be performed without causing re-evaporation phenomenon. In addition, in the case of single-sided galvanizing, only one side needs to be vapor-deposited galvanized. After vapor deposited galvanizing, the copper strip is discharged into the atmosphere via a sealing roll chamber 9'.
本発明は以上述べたように蒸着亜鉛めっきの前処理法と
してカップバーナーを用いた竪型炉方式の前処理法を用
いるものである。鋼帯の還元・焼鈍は竪型炉のみで行な
うので、短時間で鋼帯の清浄、活性化ができ、しかも弱
酸他炉方式のガス還元・焼鈍炉を泪いた前処理法と同様
に良好なめっき密着性を得ることができる。なお、必要
であれば竪型炉の前に脱脂、酸洗槽を設けてもよい。As described above, the present invention uses a vertical furnace type pretreatment method using a cup burner as a pretreatment method for vapor deposited galvanizing. Since reduction and annealing of the steel strip is carried out only in a vertical furnace, the steel strip can be cleaned and activated in a short time, and is as good as the pretreatment method using a gas reduction and annealing furnace using weak acid. Plating adhesion can be obtained. Note that, if necessary, a degreasing and pickling tank may be provided in front of the vertical furnace.
（実施例）
本発明者らが作製した装置は、実質的に第１図に示す装
置である。竪型炉２と冷却部３を合わせた長さは約１５
ｍ、蒸着亜鉛めっき装置の長さは約５０ｍ、全体の長さ
は約６５ｍである。(Example) The device produced by the present inventors is substantially the device shown in FIG. The combined length of the vertical furnace 2 and cooling section 3 is approximately 15
m, the length of the vapor deposition galvanizing equipment is about 50 m, and the overall length is about 65 m.
この装置を用いて鋼帯に溶融亜鉛めっきと蒸着亜鉛めっ
きを施した。Using this equipment, hot-dip galvanizing and vapor deposition galvanizing were applied to steel strips.
鋼帯： ０．８ｍｍ厚さＸ １０００ｍｍ幅の圧延まま
の低炭素鋼通板速度： ５０ｍ／ｍｉｎ
溶融亜鉛めっき
竪型炉内の
カップバーナーの熱容量： ５０，０００Ｋｃａｌ／ｈ
・本竪型炉の燃焼ガス中のＣｏ ＋ Ｈ２濃度：０．５
〜１５％竪型炉の燃焼ガス温度： １０００〜１６００
℃竪型炉内での鋼帯表面温度：５００〜８００℃冷却部
の雰囲気ガス組成＝２〜７５％Ｈ，−Ｎ２冷却部の雰囲
気ガス使用量：約１５ＯＮｍ’／ｈめっき浴組成二市販
蒸留亜鉛＋０．１８％Ａ１めっき浴温度：約４６０℃
めっき浴浸漬時の鋼帯表面温度：約り５０℃蒸着亜鉛め
っき
竪型炉内の
カップバーナーの熱容量： ５０，０ＯＯＫｃａｌ／ｈ
・本竪型炉の燃焼ガス中のｃｏ ＋ ８２濃度＝０．５
〜１５％竪型炉の燃焼ガス温度： １０００〜１６００
℃竪型炉内での鋼帯表面温度：５００〜８００℃冷却部
の雰囲気ガス組成：２〜７５％Ｈｚ −Ｎ２冷却部の雰
囲気ガス使用量：約１５ＯＮｍ’／ｈ冷却部出口での銅
帯表面温度：４５０℃蒸着亜鉛二市販電解亜鉛
亜鉛蒸発温度：５００℃
賦圧室ガス組成二Ｎ２
賦圧室圧カニ大気圧＋３〜１０ｍｍＨ，０蒸着室真空圧
： ０．０１〜Ｏ，１ｔｏｒｒ蒸着亜鉛めっき時の鋼帯
表面温度＝１５０〜３５０℃最初は蒸着亜鉛めっき装置
を連結せずに溶融亜鉛めっきを施した。この場合、蒸着
亜鉛めっき装置が連結されていないので、めっき済みの
鋼帯は上方に導いて処理した。めっき済みの銅帯から２
゜ｔｎｍ幅Ｘ ５０ｍｍ長さのｆ（Ｊ離試験用の試験片
を切り出し。Steel strip: 0.8 mm thick x 1000 mm wide as-rolled low carbon steel Strip speed: 50 m/min Heat capacity of cup burner in hot-dip galvanizing vertical furnace: 50,000 Kcal/h
・Co + H2 concentration in the combustion gas of this vertical furnace: 0.5
~15% Vertical furnace combustion gas temperature: 1000-1600
℃ Steel strip surface temperature in vertical furnace: 500-800℃ Atmospheric gas composition in cooling section = 2-75%H, -N2 Atmospheric gas consumption in cooling section: approximately 15ONm'/h Plating bath composition 2 Commercially available distillation Zinc + 0.18% A1 plating bath temperature: Approximately 460°C Steel strip surface temperature when immersed in plating bath: Approximately 50°C Heat capacity of cup burner in vertical furnace for vapor deposition galvanizing: 50,0OOKcal/h
・CO + 82 concentration in the combustion gas of this vertical furnace = 0.5
~15% Vertical furnace combustion gas temperature: 1000-1600
℃ Steel strip surface temperature in vertical furnace: 500 to 800 ℃ Atmospheric gas composition in cooling section: 2 to 75% Hz -N2 Atmospheric gas consumption in cooling section: Approximately 15 ONm'/h Copper strip at cooling section outlet Surface temperature: 450°C Vapor-deposited zinc 2 Commercially available electrolytic zinc Zinc Evaporation temperature: 500°C Pressure chamber gas composition 2N2 Pressure chamber pressure Crab Atmospheric pressure + 3 to 10 mmH, 0 Vapor deposition chamber vacuum pressure: 0.01 to O, 1 torr Vapor-deposited zinc Steel strip surface temperature during plating = 150 to 350° C. Hot-dip galvanizing was initially performed without connecting a vapor deposition galvanizing device. In this case, since the vapor deposition galvanizing equipment was not connected, the plated steel strip was guided upward for treatment. 2 from plated copper strip
Cut out a test piece for f(J separation test) with a width of tnm and a length of 50mm.
１８０°曲げを行ない１曲げ部の外側にセロテープを貼
付けた後、剥しめっき密着性を調査した。その結果、め
っき層のセロテープへの転写は全く認められず、めっき
密着性は良好であった。After performing 180° bending and pasting cellophane tape on the outside of one bent portion, peeling and plating adhesion were investigated. As a result, no transfer of the plating layer to the cellophane tape was observed, and the plating adhesion was good.
次いで蒸着亜鉛めっき装置を連結し、前記条件で蒸着亜
鉛めっきを施した。蒸着亜鉛めっきした鋼帯のめっき屡
の剥離試験を行なった結果、めっき層のセロテープへの
転写は全く認められず、溶融亜鉛めっきした場合と同様
に良好なめっき密着性を得た。蒸着亜鉛めっきに先だっ
て行なったオージェ電子分析装置による＃Ａ鋼帯表面深
さ方向の元素分析結果では、圧延ままの状態ではｍｔｒ
表面に厚み約１０００人のＦｅ酸化物が存在していた。Next, a vapor deposited galvanizing apparatus was connected, and vapor deposited galvanizing was performed under the above conditions. As a result of conducting a peel test on the steel strip coated with vapor deposited zinc, no transfer of the plating layer to cellophane tape was observed, and good plating adhesion was obtained as in the case of hot-dip galvanizing. The results of elemental analysis in the depth direction of the #A steel strip surface using an Auger electron analyzer conducted prior to vapor deposition galvanizing showed that in the as-rolled state, mtr.
Fe oxide with a thickness of approximately 1,000 layers was present on the surface.
しかし、前記条件でめっき前処理を施し、蒸着室内で亜
鉛を蒸着せずに室温まで冷却した後、大気中に導出した
鋼帯のオージェ電子分析結果では、鋼帯表面からＯは検
出されず、鋼帯表面に存在するＦｅ酸化物は完全に還元
されていた。However, in the results of Auger electron analysis of the steel strip that was subjected to plating pretreatment under the above conditions, cooled to room temperature without depositing zinc in the deposition chamber, and then released into the atmosphere, no O was detected on the surface of the steel strip. The Fe oxide present on the surface of the steel strip was completely reduced.
燃焼ガス中のＣｏ 十Ｈ，濃度０．１％、その他の条件
は前記と同条件で蒸着亜鉛めっきした。この場合、剥離
試験においてめっき暦が全面剥離した。本条件で鋼帯に
めっき前処理を施し、蒸着室内で亜鉛を蒸着せずに室温
まで冷却した後、大気中に導出した鋼帯のオージェ電子
分析を行なった結果、鋼帯表面に厚み約５００〜８００
人のＦｅ酸化物が残存していた。燃焼ガス中のＣｏ ＋
８２濃度０．１％では圧延ままの鋼帯表面に存在する
厚み約１０００人のＦｅ酸化物を還元、除去することが
できず、めっき密着性が不良となる。Vapor-deposited zinc plating was carried out under the same conditions as above except that the concentration of Co10H in the combustion gas was 0.1%. In this case, the entire surface of the plating peeled off in the peel test. The steel strip was subjected to pre-plating treatment under these conditions, cooled to room temperature without depositing zinc in the deposition chamber, and then taken out into the atmosphere. As a result of performing Auger electron analysis on the steel strip, it was found that the surface of the steel strip had a thickness of approximately 500 mm. ~800
Human Fe oxide remained. Co + in combustion gas
When the 82 concentration is 0.1%, it is not possible to reduce and remove the Fe oxide having a thickness of approximately 1000 nm existing on the surface of the as-rolled steel strip, resulting in poor plating adhesion.
竪型炉の燃焼ガス温度９００°Ｃ１竪型炉内での鋼帯表
面温度４００℃、その他の条件は前記と同条件で蒸着亜
鉛めっきした。この場合、剥離試験においてめっき層が
局部的に剥離した０本条件で鋼帯にめっき前処理を施し
、蒸着室内で亜鉛を蒸着せずに室温まで冷却した後、大
気中に導出した銅帯のオージェ電子分析結果では、鋼帯
表面に厚み２００〜４００人のＦｅ酸化物が局部的に残
存していた。Vapor-deposited zinc plating was carried out under the same conditions as above, except that the combustion gas temperature in the vertical furnace was 900°C and the steel strip surface temperature in the vertical furnace was 400°C. In this case, the steel strip was pre-plated under conditions where the plating layer peeled off locally in the peel test, and after cooling to room temperature without depositing zinc in the vapor deposition chamber, the copper strip was taken out into the atmosphere. According to the results of Auger electron analysis, Fe oxide with a thickness of 200 to 400 particles remained locally on the surface of the steel strip.
本条件では圧延ままの鋼帯の表面に存在する厚み約１０
００人のＦｅ酸化物を完全に還元、除去することはでき
ず、めっき密着性が局部的に不良となる。Under these conditions, the thickness existing on the surface of the as-rolled steel strip is approximately 10
It is not possible to completely reduce and remove the Fe oxide, and the plating adhesion becomes locally poor.
燃焼ガス中のＣｏ 十Ｈ，濃度２０％、その他の条件は
前記と同条件で蒸着亜鉛めっきした。この場合も剥離試
験においてめっき層が局部的に剥離した。Vapor-deposited zinc plating was carried out under the same conditions as above except that the concentration of Co 1 H in the combustion gas was 20%. In this case as well, the plating layer peeled off locally in the peel test.
本条件で鋼帯にめっき前処理を施し、蒸着室内で亜鉛を
蒸着せずに室温まで冷却した後、大気中に導出した銅帯
のオージェ電子分析結果では、鋼帯表面に局部的にＣが
検出された。燃焼ガス中のＣｏ ＋ Ｈ，濃度が１５％
以上になるとＣｏ２＋Ｃｇ２ＣＯ
Ｇｏ、＋２Ｈ，ｇｃ＋２Ｈ２０
の反応によって生成するＣの鋼帯表面への付着が著しく
なり、また、鋼帯表面に付着している圧延油が完全に除
去できなくなる。そのため、めっき密着性が局部的に不
良になる。The results of Auger electron analysis of the copper strip, which was pre-plated under these conditions and cooled to room temperature without depositing zinc in the deposition chamber and then released into the atmosphere, showed that C was locally present on the surface of the steel strip. was detected. Co+H in combustion gas, concentration 15%
If the temperature exceeds that level, the adhesion of C produced by the reaction of Co2+Cg2CO Go, +2H, gc+2H20 to the surface of the steel strip becomes significant, and rolling oil adhering to the surface of the steel strip cannot be completely removed. Therefore, plating adhesion becomes locally poor.
以上述べたように、竪型炉方式のめっき前処理法を用い
て蒸着亜鉛めっきする場合、めっき前処理条件が以下の
範囲でのみ、めっき密着性が良好になる。As described above, when vapor deposited zinc plating is performed using a vertical furnace type plating pretreatment method, the plating adhesion is good only when the plating pretreatment conditions are in the following range.
竪型炉の燃焼ガス中の
Ｃｏ ＋ Ｈ，濃度二０．５〜１５％
竪型炉の燃焼ガス温度： １０００〜１６００℃竪型炉
内での鋼帯表面温度：５００〜８００℃冷却部の雰囲気
ガス組成：２〜７５％Ｈ２−Ｎ２冷却部出口での鋼帯表
面温度：４５０℃したがって１本発明、におけるめっき
前処理条件は上記の範囲に限定する。Co + H concentration in the combustion gas of the vertical furnace: 20.5-15% Combustion gas temperature of the vertical furnace: 1000-1600°C Steel strip surface temperature in the vertical furnace: 500-800°C of the cooling section Atmospheric gas composition: 2 to 75% H2-N2 Steel strip surface temperature at outlet of cooling section: 450°C Therefore, the plating pretreatment conditions in the present invention are limited to the above range.
（発明の効果）
本発明により、カップバーナーを用いた炉方による前処
理法でも弱酸化炉方式のガス還元・焼鈍法を用いた場合
と同様にめっき密着性に優れた蒸着亜鉛めっき鋼板の製
造が可能である。しかも、竪型を用いる場合には装置の
全長は約６５ｍで、弱酸化炉方式のガス還元・焼鈍法を
用いた場合の装置に比べて１７４の長さでよく、設置面
積が小さく、装置自在が小型で比較的簡単な構造で安価
に作製できる。また、１コイル通板する時間は弱酸化炉
方式のガス還元・焼鈍法を用いた場合の装置に比べて約
１／２であり、生産性も高い。さらに、雰囲気ガスは冷
却部で使用するのみで雰囲気ガスの使用量も約１７２と
なり、製造コストの面でも有利である。(Effects of the Invention) According to the present invention, a vapor-deposited galvanized steel sheet can be produced which has excellent plating adhesion even when using a pretreatment method using a cup burner in a furnace as when using a gas reduction/annealing method using a weak oxidizing furnace method. is possible. Moreover, when using a vertical type, the total length of the device is approximately 65 m, which is only 174 m long compared to the device using the weak oxidation furnace gas reduction/annealing method, which occupies a small installation area and allows for flexible equipment flexibility. It has a small size, relatively simple structure, and can be manufactured at low cost. Furthermore, the time required to thread one coil is approximately 1/2 that of an apparatus using a gas reduction/annealing method using a weak oxidation furnace, and the productivity is also high. Furthermore, since the atmospheric gas is only used in the cooling section, the amount of atmospheric gas used is approximately 172 kg, which is advantageous in terms of manufacturing costs.
なお、竪型炉および冷却部と蒸着亜鉛めっき装置は新た
に作製してもよいが、既設の竪型炉方式の溶融亜鉛めっ
き装置の冷却部出口に蒸着亜鉛めっき装置を連結しても
よい。Although the vertical furnace, the cooling section, and the evaporation galvanizing apparatus may be newly manufactured, the evaporation galvanizing apparatus may be connected to the cooling section outlet of the existing vertical furnace type hot-dip galvanizing apparatus.
第１図は本発明の好適実施態様概念を示す装置の長手方
向の断面図である。第１図において■は竪型炉方式の溶
融めっき装置、■は蒸着亜鉛めっき装置、１は鋼帯、２
は竪型炉、３は冷却部、４はスナウト、５は亜鉛浴、６
は冷却部の出口側、７は連結ダクト、８は賦圧室、９，
９′はシールロール室、 １０．１０’は蒸着室、１１
は中間シールロール室である。
特許出原人日新製鋼株式会社FIG. 1 is a longitudinal sectional view of a device illustrating a preferred embodiment concept of the present invention. In Figure 1, ■ is a vertical furnace type hot-dip plating equipment, ■ is a vapor deposition galvanizing equipment, 1 is a steel strip, 2 is
is a vertical furnace, 3 is a cooling section, 4 is a snout, 5 is a zinc bath, 6
is the outlet side of the cooling section, 7 is the connecting duct, 8 is the pressure chamber, 9,
9' is a seal roll chamber, 10.10' is a deposition chamber, 11
is the intermediate seal roll chamber. Patent source: Nissin Steel Co., Ltd.
Claims (1)
圧延油等を除去し、鋼帯表面の酸化物を還元、除去して
鋼帯表面を活性化した後、亜鉛蒸着することを特徴とす
る蒸着亜鉛めっき鋼板の製造方法。 ２、請求項１に記載の方法であって、炉内の燃焼ガス成
分中のＣＯ＋Ｈ＿２濃度が０〜１５％である蒸着めっき
鋼板の製造方法。 ３、請求項１に記載の方法であって、炉内の燃焼ガス温
度が１０００〜１６００℃である蒸着亜鉛めっき鋼板の
製造方法。 ４、請求項１に記載の方法であって、炉内での鋼帯の加
熱温度が５００〜８００℃である蒸着亜鉛めっき鋼板の
製造方法。 ５、請求項１に記載の方法であって、鋼帯を炉内で加熱
した後、Ｈ＿２を２〜７５％含むＮ＿２ガス中で鋼帯の
表面温度を制御し、亜鉛蒸着時の鋼帯表面温度が１５０
〜３５０℃となるようにした蒸着亜鉛めっき鋼板の製造
方法。 ６、請求項１〜５の何れかの項に記載の方法であって、
カップバーナーを用いた炉を竪型に配置する方法。[Claims] 1. After removing rolling oil etc. adhering to the surface of the steel strip in a furnace using a cup burner and reducing and removing oxides on the surface of the steel strip to activate the surface of the steel strip, A method for manufacturing a vapor-deposited galvanized steel sheet, which comprises vapor-depositing zinc. 2. The method according to claim 1, wherein the CO+H_2 concentration in the combustion gas component in the furnace is 0 to 15%. 3. The method according to claim 1, wherein the combustion gas temperature in the furnace is 1000 to 1600°C. 4. The method according to claim 1, wherein the heating temperature of the steel strip in the furnace is 500 to 800°C. 5. The method according to claim 1, wherein after heating the steel strip in a furnace, the surface temperature of the steel strip is controlled in N_2 gas containing 2 to 75% H_2, and the surface temperature of the steel strip during zinc evaporation is controlled. temperature is 150
A method for manufacturing a vapor-deposited galvanized steel sheet at a temperature of ~350°C. 6. The method according to any one of claims 1 to 5,
A method of vertically arranging a furnace using cup burners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4434188A JPH01222043A (en) | 1988-02-29 | 1988-02-29 | Manufacture of vapor deposited galvanized sheet steel having excellent galvanizing adhesion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4434188A JPH01222043A (en) | 1988-02-29 | 1988-02-29 | Manufacture of vapor deposited galvanized sheet steel having excellent galvanizing adhesion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01222043A true JPH01222043A (en) | 1989-09-05 |
Family
ID=12688813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4434188A Pending JPH01222043A (en) | 1988-02-29 | 1988-02-29 | Manufacture of vapor deposited galvanized sheet steel having excellent galvanizing adhesion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01222043A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006046905A1 (en) * | 2004-10-29 | 2006-05-04 | Aga Ab | Method for the manufacture of extended steel products. |
-
1988
- 1988-02-29 JP JP4434188A patent/JPH01222043A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006046905A1 (en) * | 2004-10-29 | 2006-05-04 | Aga Ab | Method for the manufacture of extended steel products. |
| US7763117B2 (en) | 2004-10-29 | 2010-07-27 | Aga Ab | Method for the manufacture of extended steel products |
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