JPH08174239A - Production of ni alloy clad stainless steel sheet - Google Patents

Production of ni alloy clad stainless steel sheet

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Publication number
JPH08174239A
JPH08174239A JP31866194A JP31866194A JPH08174239A JP H08174239 A JPH08174239 A JP H08174239A JP 31866194 A JP31866194 A JP 31866194A JP 31866194 A JP31866194 A JP 31866194A JP H08174239 A JPH08174239 A JP H08174239A
Authority
JP
Japan
Prior art keywords
alloy
rolling
stainless steel
annealing
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.)
Withdrawn
Application number
JP31866194A
Other languages
Japanese (ja)
Inventor
Hideaki Yamagishi
英明 山岸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YAMAKI KOGYO KK
Original Assignee
YAMAKI KOGYO KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by YAMAKI KOGYO KK filed Critical YAMAKI KOGYO KK
Priority to JP31866194A priority Critical patent/JPH08174239A/en
Publication of JPH08174239A publication Critical patent/JPH08174239A/en
Withdrawn legal-status Critical Current

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  • Pressure Welding/Diffusion-Bonding (AREA)
  • Laminated Bodies (AREA)

Abstract

PURPOSE: To prevent sticking of oxidized scale on Ni alloy by laminating Ni alloy and stainless steel, joining waste material to Ni alloy side and removing the waste material after rolling and annealing. CONSTITUTION: The Ni alloy, which contains 60-70wt.% Ni, 30-40wt% Cu and is used for a cladding material, is laminated to a stainless steel of base material. A plain steel or iron sprayed film for a waste material is joined on Ni alloy side. It is subjected to hot rolling at <=1200 deg.C and annealing at <=1000 deg.C. Part of the waste material is removed at pickling, after cold rolling, the remaining waste material is removed at pickling after annealing. At hot rolling, oxidation of Ni alloy is surely prevented by the waste material, hot rolling can be done in the atmosphere. Because deforming resistance of stainless steel and Ni alloy is low, a rolling temp. of 800 deg.C of solution treatment heat temp. capable of easy rolling can be used.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、ステンレス鋼に高耐食
性を有するNi合金を被覆したNi合金クラッドステン
レス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 Ni alloy clad stainless steel sheet obtained by coating stainless steel with a Ni alloy having high corrosion resistance.

【0002】[0002]

【従来の技術】日本は、海に囲まれており、従って、湿
度も大きく、環境変化に伴なう金属の腐食は、資源の減
少、腐食による外観の見苦しさなど社会資源の大きな損
失にも繋がるものである。このため、耐食性が良く、軽
量で強度にも優れ、塗装などの表面処理など行わなくて
もよい、いわゆるメンテナンスフリーの金属材料である
チタンが屋根材、外壁材をはじめとして各種の外装材と
して使用されつつあるが、高価格でなかなか汎用されて
いないのが現状である。
2. Description of the Related Art Japan is surrounded by the sea, and therefore has high humidity. Corrosion of metals due to environmental changes causes a great loss of social resources such as a decrease in resources and unsightly appearance due to corrosion. It is connected. For this reason, titanium, which is a so-called maintenance-free metal material that has good corrosion resistance, is lightweight, has excellent strength, and does not require surface treatment such as painting, is used as various exterior materials such as roofing materials and outer wall materials. However, the current situation is that it is expensive and not widely used.

【0003】そこで、チタンと鋼との複合材が提供され
ているが、屋根材等の外装材として使用するには、鋼側
に塗装やラミネートを施さなければならなく、又、チタ
ンと鋼の腐食電位が違い過ぎるので端面錆が発生してし
まうという問題がある。さらに、圧延圧着した場合に
は、スラブの加熱及び熱間圧延中にチタンと鋼中のCと
の相互拡散による炭化物及び鉄分との金属間化合物が生
成し、脆弱な界面が形成され、密着強度が小さくなって
しまう。
Therefore, although a composite material of titanium and steel is provided, in order to use it as an exterior material such as a roof material, the steel side must be coated or laminated, and the composite material of titanium and steel must be provided. Since the corrosion potentials are too different, there is a problem that end surface rust occurs. Further, in the case of rolling and pressure bonding, an intermetallic compound of carbide and iron is generated by mutual diffusion of titanium and C in steel during heating and hot rolling of a slab, a weak interface is formed, and adhesion strength is increased. Becomes smaller.

【0004】又、チタンをポリエステル系接着剤により
母材のステンレス鋼に接合した複合材が提供されてい
る。しかしながら、この複合材にあっては、合わせ材と
母材の熱膨張率が異なるために経年変化によりずれが生
じたり、又、経時変化により接着力の劣化が生じたり、
更には合わせ材、母材の曲げ応力が異なることにより、
曲げ加工が難しく、溶接加工が不可能であるという問題
があった。
There is also provided a composite material in which titanium is bonded to a base material, stainless steel, by a polyester adhesive. However, in this composite material, the coefficient of thermal expansion of the laminated material and the base material are different from each other, which causes a shift due to aging, or deterioration of the adhesive force due to aging,
Furthermore, due to the different bending stress of the laminated material and the base material,
There was a problem that bending was difficult and welding was impossible.

【0005】[0005]

【発明が解決しようとする課題】このため、本出願人
は、チタンとステンレス鋼とを爆着法により接合させた
チタンクラッドステンレススラブを熱間及び冷間圧延し
たチタンクラッドステンレス鋼板を製造する方法を提案
している(特願平4−348011号)。又、Ni合金
とステンレス鋼とを爆着法により接合したNi合金クラ
ッドステンレススラブを熱間及び冷間圧延させて表面材
が美麗なNi合金クラッドステンレス鋼板を提供してい
る(特願平5−325282号)。
Therefore, the present applicant has proposed a method for producing a titanium clad stainless steel sheet by hot and cold rolling a titanium clad stainless slab obtained by joining titanium and stainless steel by an explosive welding method. (Japanese Patent Application No. 4-348011). Further, a Ni alloy clad stainless steel slab obtained by joining a Ni alloy and stainless steel by an explosive deposition method is hot-rolled and cold-rolled to provide a Ni alloy clad stainless steel sheet having a beautiful surface material (Japanese Patent Application No. 5- No. 325,282).

【0006】しかしながら、これら爆着法では、コスト
が高く、経済的でなく、しかも歩留りもよくない。一
方、Ni合金とステンレス鋼とを圧延法により接合させ
るNi合金クラッドステンレス鋼板の製造方法が知られ
ている(特開平2−20673号等)。しかし、この方
法では、熱間圧延後焼鈍の際にNi合金層表面に厚くて
ねばい酸化スケールが付着し、このスケールはステンレ
ス鋼の従来の酸洗ラインでは除去できない。このため
に、ショットブラストなどの物理的な表面処理方法を行
い、さらに酸洗を2回行って酸化スケールを除去してい
る。さらに冷間圧延後の焼鈍工程に際しても、母材がス
テンレス鋼の焼鈍温度と同様に高温にしなければならな
い。それによって、酸化スケールがNi合金表面に多く
発生してしまう。冷間圧延後の脱スケールも熱間圧延後
と同様にショットブラストなどの物理的剥離を行い、さ
らに酸洗を2回行って、酸化スケールを除去している。
従って、Ni合金が酸化されて厚さが減少して、高価な
Ni合金が無駄に消費されるだけでなく、酸化スケール
の除去工程も必要となり、しかもNi合金層の表面も美
麗ではないという問題がある。また、冷間圧延後の焼鈍
工法に光輝焼鈍があり、この場合は熱間圧延後の脱スケ
ールのみでよい。しかし、この工法は通常酸洗工法に比
べ、高価であり、光沢がありすぎて建材には適さないと
いう問題がある。
However, these explosive deposition methods are expensive, uneconomical, and poor in yield. On the other hand, there is known a method for producing a Ni alloy clad stainless steel sheet in which a Ni alloy and stainless steel are joined by a rolling method (JP-A-2-20673, etc.). However, in this method, a thick and sticky oxide scale adheres to the surface of the Ni alloy layer during annealing after hot rolling, and this scale cannot be removed by a conventional pickling line for stainless steel. For this purpose, a physical surface treatment method such as shot blasting is performed, and further pickling is performed twice to remove the oxide scale. Further, in the annealing process after cold rolling, the base material must be at a high temperature similar to the annealing temperature of stainless steel. As a result, a large amount of oxide scale is generated on the surface of the Ni alloy. As for descaling after cold rolling, physical exfoliation such as shot blasting is performed similarly to after hot rolling, and pickling is further performed twice to remove oxide scale.
Therefore, not only is the Ni alloy oxidized and its thickness reduced, the expensive Ni alloy is wastefully consumed, but also an oxide scale removal process is required, and the surface of the Ni alloy layer is not beautiful. There is. There is bright annealing as an annealing method after cold rolling, and in this case, only descaling after hot rolling is required. However, this method is more expensive than the normal pickling method, and there is a problem that it is too glossy and not suitable for building materials.

【0007】本発明は上記問題点を解決するためになさ
れたものであり、その目的とするところは、合わせ材と
母材の接合強度が大きく、曲げ加工性に優れ、しかも圧
延性に優れ、生産性が高く、表面が美麗で、歩留りもよ
いNi合金クラッドステンレス鋼板を提供することにあ
る。
The present invention has been made in order to solve the above problems, and its purpose is to provide a large bonding strength between a laminated material and a base material, excellent bending workability, and excellent rolling property. An object of the present invention is to provide a Ni alloy clad stainless steel sheet having high productivity, a beautiful surface, and high yield.

【0008】[0008]

【課題を解決するための手段】請求項1の発明は、合わ
せ材であるNi合金と母材であるステンレス鋼とを積層
してNi合金クラッドステンレススラブのNi合金層側
に捨て材を接合させ、次いで圧延し、焼鈍後捨て材を除
去することを特徴とする。請求項2の発明は、熱間圧延
後、焼鈍した後の酸洗時に捨て材を除去することを特徴
とする。
According to a first aspect of the present invention, a Ni alloy that is a laminated material and a stainless steel that is a base material are laminated, and a discarded material is joined to the Ni alloy layer side of a Ni alloy clad stainless slab. Then, rolling is performed, and the discarded material is removed after annealing. The invention of claim 2 is characterized in that the waste material is removed during pickling after annealing after hot rolling.

【0009】請求項3の発明は、熱間圧延後、焼鈍した
後の酸洗時に一部の捨て材を除去し、次いで冷間圧延
後、焼鈍した後の酸洗時に残部の捨て材を除去すること
を特徴とする。請求項4の発明は、合わせ材であるNi
合金の主要化学組成が、Niと、Cu、Cr及びMoか
ら成る群れから選ばれた1種乃至2種以上であることを
特徴とする。
According to the third aspect of the present invention, after hot rolling and annealing, a part of the discarded material is removed during pickling, and after cold rolling and annealing, the remaining discarded material is removed during pickling. It is characterized by doing. The invention of claim 4 is Ni which is a laminated material.
The main chemical composition of the alloy is one or more selected from the group consisting of Ni and Cu, Cr and Mo.

【0010】請求項5の発明は、合わせ材であるNi合
金の主要化学組成が、Ni60〜70wt%、Cu30
〜40wt%であることを特徴とする。請求項6の発明
は、捨て材が普通鋼板又は鉄系溶射皮膜であることを特
徴とする。請求項7の発明は、熱間圧延を温度1200
℃以下で行うことを特徴とする。
According to a fifth aspect of the present invention, the main chemical composition of the Ni alloy, which is a composite material, is 60 to 70 wt% of Ni and 30% of Cu.
It is characterized in that it is ˜40 wt%. The invention of claim 6 is characterized in that the discarded material is a normal steel plate or an iron-based thermal spray coating. According to the invention of claim 7, hot rolling is performed at a temperature of 1200.
It is characterized in that it is performed at a temperature of ℃ or less.

【0011】請求項8の発明は、焼鈍を温度1000℃
以下で行うことを特徴とする。
The invention of claim 8 anneals at a temperature of 1000.degree.
It is characterized by performing the following.

【0012】[0012]

【作用】請求項1の発明にあっては、圧延クラッドスラ
ブは、界面近傍部の硬度分布がなだらかなので、以降の
熱延、冷延作業条件が幅広く設定可能で製造条件の範囲
が広くなり、更に圧延時の界面剥離や形状不良に心配が
ない。又、爆着スラブに比べて、経済的負担が小さく、
スラブの歩留りもよく、装置も簡単である。しかも、ス
ラブのNi合金層側に捨て材を接合させ、焼鈍後に捨て
材を除去するので、Ni合金が酸化されて酸化スケール
が付着することもなく、従って、Ni合金の厚さが減少
することもなく、経済的で表面も美麗なものとなる。
In the invention of claim 1, since the rolled clad slab has a gentle hardness distribution in the vicinity of the interface, the subsequent hot rolling and cold rolling working conditions can be widely set, and the range of manufacturing conditions is widened. Furthermore, there is no concern about interfacial peeling or defective shape during rolling. In addition, the economic burden is smaller than that of the bomb slab,
The slab yield is good and the equipment is simple. Moreover, since the waste material is joined to the Ni alloy layer side of the slab and the waste material is removed after annealing, the Ni alloy is not oxidized and oxide scale does not adhere, and therefore the thickness of the Ni alloy is reduced. It is economical and has a beautiful surface.

【0013】請求項2の発明にあっては、熱間圧延後、
焼鈍した後の酸洗時に捨て材を除去するので、ステンレ
ス鋼の従来の酸洗ラインをそのまま採用でき、ショット
ブラスト等による材料の損失がなくなるものである。請
求項3の発明にあっては、熱間圧延後、焼鈍した後の酸
洗時に一部の捨て材を除去し、次いで冷間圧延後、焼鈍
した後の酸洗時に残部の捨て材を除去するので、この工
法においてもステンレス鋼の従来の酸洗ラインをそのま
ま採用でき、ショットブラスト等による材料の損失がな
くなるものである。
According to the invention of claim 2, after hot rolling,
Since the discarded material is removed during pickling after annealing, the conventional pickling line of stainless steel can be adopted as it is, and material loss due to shot blasting etc. is eliminated. According to the invention of claim 3, a part of the discarded material is removed during pickling after hot rolling and annealing, and then the rest of the discarded material is removed during pickling after cold rolling and annealing. Therefore, even in this construction method, the conventional pickling line of stainless steel can be adopted as it is, and the loss of material due to shot blasting or the like is eliminated.

【0014】請求項4の発明にあっては、Cuを含有さ
せることにより、加工性、圧延性が向上するものであ
り、又、Cr、Moを含有させることにより、耐食性が
更に大きくなるものである。請求項5の発明にあって
は、圧延性が著しく向上するものである。請求項6の発
明にあっては、普通鋼板及び鉄系溶射皮膜は安価であ
り、その除去も簡単で作業性に優れるものである。
In the invention of claim 4, the workability and rollability are improved by containing Cu, and the corrosion resistance is further increased by containing Cr and Mo. is there. According to the invention of claim 5, the rolling property is remarkably improved. In the invention of claim 6, the ordinary steel plate and the iron-based sprayed coating are inexpensive, easy to remove, and excellent in workability.

【0015】請求項7にあっては、熱間圧延時に高温に
て圧延を行うことにより、必要な圧延パワーが小さくな
り、容易に圧延できるものである。請求項8の発明にあ
っては、焼鈍時に高温にて焼鈍を行うことにより加工性
が向上する。以下、本発明を詳細に説明する。
According to the present invention, by performing rolling at high temperature during hot rolling, the required rolling power is reduced and rolling can be performed easily. According to the invention of claim 8, the workability is improved by performing the annealing at a high temperature during the annealing. Hereinafter, the present invention will be described in detail.

【0016】本発明にあっては、母材はステンレス鋼で
あり、オーステナイト鋼、フェライト鋼のいずれでも適
用可能である。ステンレス鋼の炭素含有量は0.08w
t%以下であるのが好ましい。0.08wt%を超える
とNi合金との接合界面に脆化層となる炭化物が形成さ
れるおそれがある。又、合わせ材のNi合金は種々の組
成のものが採用されうるが、主要化学組成が、Niと、
Cu、Cr及びMoから成る群れから選ばれた1種乃至
2種以上のものが好適に採用される。この組成におい
て、Cuを含有させることにより、加工性、圧延性が向
上するものであり、又、耐食性に優れ、しかも、発銹時
の色調が良好で、含有量を変化させれば、量に応じたレ
インボーカラーを発現させることが可能となる。又、C
uを2〜10wt%含有させると、無添加の場合に比べ
て、熱間変形抵抗を30%程度減少させることができ、
加工性が著しく改善される。Crを含有させることによ
り、耐候性が向上し、耐食性が更に大きくなるものであ
るが、5〜20wt%含有させることにより、耐高温酸
化性が向上し、高温酸化による腐食増量を5wt%では
600℃、12wt%では900℃、19wt%では1
010℃まで0mg/dm2 (酸化増量がない)とする
ことが可能となり、又、光沢による美麗化をもたらし、
含有量が増加するにつれ、緑系の深みのある光沢が得ら
れる。Moを含有させることにより、耐食性が更に大き
くなるものであり、又、1〜10wt%含有させると、
材料の強度を50%以上増加させることができ、複合材
料に所定の強度が必要なとき、含有量を1/3以下にす
ることができる。その他、少量のAl、Si、Fe、
W、Ti、C等を成分として添加してもよい。そして、
圧延性を主眼とする場合は、Ni−Cu系合金が好まし
く、特に、主要化学組成が、Ni60〜70wt%、C
u30〜40wt%であるものが好ましい。これは、耐
塩性はNi含有量が大きければ大きいほど(100wt
%まで)良好であるが、Cuに比べて単位重量当たり2
〜8倍高価であることから、Ni含有量を60〜70w
t%の範囲にすることにより、低価格になるにも拘わら
ず、耐塩性の低下が11%に留まるだけであり、一方、
Cu含有量を30〜40wt%とすることにより、加工
性が向上するので熱間圧延性が向上し、特に、長期使用
中の色調変化が外装材としての意匠効果を発揮させて色
調に優れるものとなる。この合わ材であるNi合金は、
表面が平滑で清浄なものが採用され、母材よりも縦幅及
び横幅が、例えば25mm程度の小さいものが好適であ
る。又、Ni合金の厚さは圧延後の製品厚で50μm以
上で、母材に対して1/5〜1/50が好ましい。1/
5よりも大きいと、高価なNi合金の占める割合が大き
すぎて、クラッド鋼板にしようとする経済的効果がな
く、又、Ni合金とステンレス鋼の材質特性の差が緩和
されず、各種の形状の製品に成形加工しがたくなるもの
である。逆に、1/50よりも小さいと、熱延時とか成
形加工時に、Ni合金が局部的に破断し、母材のステン
レス鋼が露出する恐れがあり、又、目的とする耐食性、
耐久性の確保が困難になる傾向にある。
In the present invention, the base material is stainless steel, and either austenitic steel or ferritic steel can be applied. Carbon content of stainless steel is 0.08w
It is preferably t% or less. If it exceeds 0.08 wt%, there is a possibility that carbide which becomes an embrittlement layer may be formed at the joint interface with the Ni alloy. Further, as the Ni alloy for the composite material, various compositions can be adopted, but the main chemical composition is Ni,
One or more selected from the group consisting of Cu, Cr and Mo are preferably adopted. In this composition, by containing Cu, the workability and rollability are improved, the corrosion resistance is excellent, and the color tone at the time of rusting is good. It is possible to develop a rainbow color depending on the situation. Also, C
When u is contained in an amount of 2 to 10 wt%, the hot deformation resistance can be reduced by about 30% as compared with the case of no addition,
Workability is significantly improved. By containing Cr, the weather resistance is improved and the corrosion resistance is further increased, but by including 5 to 20 wt%, the high temperature oxidation resistance is improved, and the corrosion increase due to the high temperature oxidation is 600 wt%. 900 ° C at 12 ° C and 12wt%, 1 at 19wt%
Up to 010 ° C, it can be 0 mg / dm 2 (no increase in oxidation), and it brings beauty due to gloss.
As the content increases, a greenish deep luster is obtained. By containing Mo, the corrosion resistance is further increased, and when 1 to 10 wt% is contained,
The strength of the material can be increased by 50% or more, and when the composite material requires a predetermined strength, the content can be reduced to 1/3 or less. In addition, small amount of Al, Si, Fe,
You may add W, Ti, C etc. as a component. And
When the rollability is the main focus, Ni-Cu based alloys are preferable, and in particular, the main chemical composition is Ni 60 to 70 wt%, C
Those having u of 30 to 40 wt% are preferable. This is because the salt resistance increases as the Ni content increases (100 wt.
%), But 2 per unit weight compared to Cu
~ 8 times more expensive, so Ni content 60 ~ 70w
By adjusting the range to t%, the salt resistance is reduced to only 11%, though the price is low.
By adjusting the Cu content to 30 to 40 wt%, the workability is improved, so that the hot rolling property is improved, and in particular, the change in color tone during long-term use exerts a design effect as an exterior material and is excellent in color tone. Becomes The Ni alloy, which is this composite material,
A material having a smooth surface and a clean surface is adopted, and a material having a vertical width and a horizontal width smaller than that of the base material, for example, about 25 mm is suitable. Further, the thickness of the Ni alloy is 50 μm or more in terms of the product thickness after rolling, and it is preferably 1/5 to 1/50 with respect to the base material. 1 /
If it is larger than 5, the ratio of expensive Ni alloy is too large, so that there is no economic effect to make a clad steel plate, and the difference in material characteristics between Ni alloy and stainless steel is not relaxed, and various shapes are obtained. This makes it difficult to process the product. On the other hand, if it is less than 1/50, the Ni alloy may locally break during hot rolling or forming, and the base material stainless steel may be exposed, and the desired corrosion resistance,
It tends to be difficult to ensure durability.

【0017】本発明にあっては、母材のステンレス鋼と
合わせ材のNi合金をNi合金側に捨て材を接合させて
圧延法により接合するのであるが、強固な界面接合強度
を得るために、まず、Ni合金とステンレス鋼の合わせ
面のスケールを除去する。又、本発明にあっては、捨て
材により、熱間圧延前及び熱間圧延時のNi合金への酸
素侵入による酸化膜及び硬化層の生成が確実に阻止で
き、大気中で熱間圧延できるだけでなく、Ni合金の損
失がなくなる。従って、ステンレス鋼及びNi合金のい
ずれも熱間圧延時の変形抵抗が低く、容易に圧延できる
温度、例えば、その溶体温度である800℃以上の圧延
温度を採用できる。捨て材としては、普通鋼とか5%C
r鋼やSi含有低合金鋼、Mn含有低合金鋼等、あるい
はアルミナ系酸化物、水ガラスのようなシリカ系酸化物
等の酸化物を採用できるが、コスト、従来工法の酸洗に
よる除去性及び作業性の点で普通鋼板及び鉄系溶射皮膜
が好ましい。この捨て材は、例えば、普通鋼の場合、捨
て材たる普通鋼、Ni合金、母材たるステンレス鋼板を
積み重ねて同時に圧延させて設けるようにしてもよく、
更にはNi合金の片面に捨て材たる普通鋼をシーム溶接
等により接合しておき、この複合材と母材たるステンレ
ス鋼板とを圧延により接合するようにして設けてもよ
い。又、捨て材とNi合金とステンレス鋼の周囲を溶接
にて接合し、Ni合金とステンレス鋼の間隙を、熱間圧
延時に酸化物が生成しないように真空にすることにより
スラブを組み立ててもよい。捨て材が鉄系溶射皮膜の場
合は、Ni合金表面にプラズマまたはアーク溶射にて鉄
系溶射皮膜をコーティングする。捨て材の厚みは、熱間
圧延後除去する方法及び冷間圧延後に除去する方法とも
圧延後の除去を考慮し、圧延終了時に数10μm残存す
る程度に圧延前の捨て材の厚みに設定することが好まし
い。
In the present invention, the base material stainless steel and the Ni alloy of the laminated material are joined by the rolling method by joining the discarded material to the Ni alloy side, and in order to obtain a strong interfacial joining strength. First, the scale of the mating surface of the Ni alloy and the stainless steel is removed. Further, in the present invention, the waste material can surely prevent the formation of the oxide film and the hardened layer due to the oxygen intrusion into the Ni alloy before and during the hot rolling, and the hot rolling can be performed only in the atmosphere. In addition, there is no loss of Ni alloy. Therefore, both stainless steel and Ni alloy have low deformation resistance during hot rolling, and a temperature that allows easy rolling, for example, a rolling temperature of 800 ° C. or higher that is the solution temperature thereof can be adopted. As discard material, ordinary steel or 5% C
r steel, Si-containing low alloy steel, Mn-containing low alloy steel, etc., or oxides such as alumina-based oxides and silica-based oxides such as water glass can be adopted, but cost and removability by conventional pickling method Also, from the viewpoint of workability, ordinary steel plates and iron-based thermal spray coatings are preferable. For example, in the case of ordinary steel, this discarded material may be provided by stacking ordinary steel as a discarded material, Ni alloy, and stainless steel sheet as a base material and rolling them at the same time.
Further, ordinary steel as a discarded material may be joined to one surface of the Ni alloy by seam welding or the like, and the composite material and the stainless steel sheet as a base material may be joined by rolling. Alternatively, the slab may be assembled by joining the discarded material, the Ni alloy, and the stainless steel by welding, and creating a vacuum in the gap between the Ni alloy and the stainless steel so that no oxide is generated during hot rolling. . When the discarded material is an iron-based sprayed coating, the surface of the Ni alloy is coated with the iron-based sprayed coating by plasma or arc spraying. Considering the removal after rolling, both the method of removing after hot rolling and the method of removing after cold rolling, the thickness of the discarded material should be set to the thickness of the discarded material before rolling such that several tens of μm remain at the end of rolling. Is preferred.

【0018】この後、Ni合金クラッドステンレススラ
ブを加熱し、リバースまたはタンデム式で数段、例えば
5スタンドを使用するパススケジュールで熱間圧延し
て、Ni合金クラッドステンレス熱延鋼板を得る。スラ
ブの加熱は、800〜1200℃で1〜5時間である。
800℃以下では、ステンレス鋼が分塊されなく、12
00℃以上ではNi合金の結晶粒が粗大化して粒界がも
ろくなり、粒界酸化を起こし、この結果、いわゆる、分
塊割れを起こして圧延が不能となってしまう。
Thereafter, the Ni alloy clad stainless slab is heated and hot-rolled in a reverse or tandem type in several stages, for example, a pass schedule using 5 stands to obtain a Ni alloy clad stainless hot rolled steel sheet. The heating of the slab is 800 to 1200 ° C. for 1 to 5 hours.
Below 800 ° C, stainless steel is not agglomerated and
At a temperature of 00 ° C. or higher, the crystal grains of the Ni alloy become coarse and the grain boundaries become brittle, causing grain boundary oxidation. As a result, so-called lump cracking occurs and rolling becomes impossible.

【0019】熱間圧延は圧延温度と終止温度の管理が重
要となり、圧延温度は1000〜1300℃、特に10
50〜1100℃が好ましい。1200℃以上では結晶
粒は粗大化し易く、圧延によって細粒化するのが難し
い。細粒化できないと、結晶粒界の長さの総和が小さい
ので、材料の強度を増すことができなく、熱延を続ける
こと自体が困難となる。1000℃以下では、変形抵抗
が大きすぎて圧延機に余分のパワーが求められるだけで
なく、パス回数を重ねて圧延する必要があり、ロール疵
その他の欠陥も発生し易くなってしまう。
In hot rolling, it is important to control the rolling temperature and the final temperature, and the rolling temperature is 1000 to 1300 ° C., especially 10
50-1100 degreeC is preferable. At 1200 ° C. or higher, the crystal grains are likely to become coarse and it is difficult to make them finer by rolling. If the grains cannot be made fine, the total length of the crystal grain boundaries is small, so that the strength of the material cannot be increased and it becomes difficult to continue the hot rolling itself. If the temperature is 1000 ° C. or less, not only the deformation resistance is too large and the rolling mill is required to have extra power, but also it is necessary to perform rolling with a large number of passes, and roll defects and other defects are likely to occur.

【0020】最終圧延終止温度は850℃以上が適当で
ある。850℃以下では、変形抵抗がさらに高くなり、
さらなる圧延加工は実際上不可能となる。熱間圧延後焼
鈍を行う。焼鈍は800〜1000℃、10〜50分で
ある。800℃以下では、熱延時の残留応力の影響で硬
度が高く、強度、耐力が大きすぎ、伸びが小さすぎるの
で、不適当である。又、焼鈍が目的なので、高温にする
必要がなく、1000℃以下で充分である。
The final rolling finish temperature is suitably 850 ° C. or higher. At 850 ° C or lower, the deformation resistance becomes higher,
Further rolling is virtually impossible. Annealing is performed after hot rolling. Annealing is 800 to 1000 ° C. and 10 to 50 minutes. If the temperature is 800 ° C. or lower, the hardness is high due to the effect of residual stress during hot rolling, the strength and yield strength are too large, and the elongation is too small. Further, since the purpose is annealing, it is not necessary to raise the temperature, and 1000 ° C. or lower is sufficient.

【0021】焼鈍後冷間圧延を行う。冷間圧延率は製造
する製品の板厚によって当然異なり、パス回数も異なっ
てくるが、変形抵抗差が製品の反りを生む程大きな冷間
圧延率をとる必要がある場合には、異周速圧延その他上
下面でロールと材料間の摩擦抵抗を変える必要がある。
この場合、ワークロール自身はできるだけ小径のロール
の方が、圧延率の確保、形状向上、エネルギー低減の点
で有利である。
After annealing, cold rolling is performed. The cold rolling rate naturally varies depending on the plate thickness of the product to be manufactured, and the number of passes also varies, but if it is necessary to take a large cold rolling rate such that the deformation resistance difference causes product warpage, different peripheral speeds are used. It is necessary to change the frictional resistance between the roll and the material between rolling and other upper and lower surfaces.
In this case, the work roll itself having a diameter as small as possible is advantageous in terms of securing the rolling rate, improving the shape, and reducing energy.

【0022】冷間圧延後焼鈍を行う。焼鈍は800〜1
000℃、10〜50分である。800℃以下では、冷
延時の残留応力の影響で硬度が高く、強度、耐力が大き
すぎ、伸びが小さすぎるので、不適当である。又、焼鈍
が目的なので、高温にする必要がなく、1000℃以下
で充分である。本発明にあっては、捨て材の除去は熱間
圧延後の焼鈍後の酸洗時に硝酸、フッ酸の混酸などの酸
洗液に浸漬してスケールと共に除去し、冷間圧延後に光
輝焼鈍を行い、その後ダルなどの表面調整を行う。ある
いは、熱間圧延後の焼鈍後の酸洗時に一部除去し、冷間
圧延後の焼鈍後の酸洗時に完全に捨て材を除去する工法
については、酸洗工程毎に従来の工法のように硝酸、フ
ッ酸の混酸などの酸洗液に浸漬してスケールと共に除去
し、その後ダルなどの表面調整を行う。
After cold rolling, annealing is performed. 800-1 annealing
000 ° C, 10 to 50 minutes. If the temperature is 800 ° C. or lower, the hardness is high due to the effect of the residual stress during cold rolling, the strength and yield strength are too large, and the elongation is too small, which is not suitable. Further, since the purpose is annealing, it is not necessary to raise the temperature, and 1000 ° C. or lower is sufficient. In the present invention, the removal of the waste material is carried out during pickling after annealing after hot rolling and nitric acid is removed together with the scale by immersing it in a pickling solution such as a mixed acid of hydrofluoric acid, and bright annealing after cold rolling. After that, surface adjustment such as dull is performed. Alternatively, for the method of partially removing during pickling after annealing after hot rolling and completely removing the discarded material during pickling after annealing after cold rolling, see the conventional method for each pickling step. Then, it is immersed in a pickling solution such as a mixed acid of nitric acid and hydrofluoric acid to remove it together with the scale, and then surface adjustment such as dull is performed.

【0023】このようにして製造したNi合金クラッド
ステンレス鋼板は高耐久性で屋根材、壁材等の外装材と
して好適に採用できるものである。次に、本発明を実施
例に基づいて具体的に説明する。以下において組成の割
合を示す%は重量%である。 (実施例1)化学組成がC:0.06%、Si:0.8
0%、Mn:1.50%、P:0.03%、S:0.0
2%、Ni:8.50%、Cr:18.80%、Fe:
Bal.(「SUS304」記号)で、厚み30mm、
縦2000mm、横1000mmのステンレス鋼スラブ
をスカーフィングにより平滑に仕上げ、且つスケールを
除去して母材とした。
The Ni alloy clad stainless steel sheet produced in this manner has high durability and can be suitably used as an exterior material such as a roof material and a wall material. Next, the present invention will be specifically described based on Examples. In the following,% indicating the composition ratio is% by weight. (Example 1) Chemical composition was C: 0.06%, Si: 0.8
0%, Mn: 1.50%, P: 0.03%, S: 0.0
2%, Ni: 8.50%, Cr: 18.80%, Fe:
Bal. (“SUS304” symbol), thickness 30 mm,
A 2000 mm long and 1000 mm wide stainless steel slab was finished smooth by scarfing, and the scale was removed to obtain a base material.

【0024】次に、ステンレス鋼スラブ上に、化学組成
がNi:66.5%、Cu:31.5%、Fe:1.2
%(「MONEL alloy 400」商品名 大同
インコアロイ株式会社製)で厚み1.5mm、縦195
0mm、横950mmの合わせ材であるNi合金を配置
し、その上に同じ大きさで厚さが2.00mmの普通鋼
板を配置して周囲をシーム溶接で接合し、普通鋼板とN
i合金とステンレス鋼の間隙を、熱間圧延時に酸化物が
生成しないように真空にすることによりNi合金クラッ
ドステンレススラブを組み立てる。
Next, on the stainless steel slab, the chemical composition was Ni: 66.5%, Cu: 31.5%, Fe: 1.2.
% (“MONEL alloy 400” product name manufactured by Daido Incoalloy Co., Ltd.) with a thickness of 1.5 mm and a length of 195
A 0 mm wide and 950 mm wide Ni alloy is placed, and a normal steel plate of the same size and a thickness of 2.00 mm is placed on the Ni alloy, and the periphery is joined by seam welding.
A Ni alloy clad stainless slab is assembled by applying a vacuum to the gap between the i alloy and the stainless steel so that no oxide is generated during hot rolling.

【0025】次いで、Ni合金クラッドステンレススラ
ブを1200℃で3時間加熱し、リバース式で1スタン
ドを使用して熱間圧延して、Ni合金クラッドステンレ
ス熱延鋼板を得た。圧延中の実体温度を1150℃とな
るように管理し、終止温度は890℃であった。圧延率
は87%であった。次いで、950℃で30分間軟化焼
鈍処理を行い、この後40℃の硝酸、フッ酸の混酸中に
浸漬してスケールと共に一部の捨て材である普通鋼板を
除去した。残存している普通鋼板の厚みは0.25mm
であった。
Next, the Ni alloy clad stainless slab was heated at 1200 ° C. for 3 hours and hot-rolled in reverse using one stand to obtain a Ni alloy clad stainless hot rolled steel sheet. The actual temperature during rolling was controlled to be 1150 ° C, and the final temperature was 890 ° C. The rolling rate was 87%. Then, a softening annealing treatment was performed at 950 ° C. for 30 minutes, and thereafter, it was immersed in a mixed acid of nitric acid and hydrofluoric acid at 40 ° C. to remove the scale and a part of the ordinary steel plate which was a discarded material. The thickness of the remaining ordinary steel plate is 0.25 mm
Met.

【0026】この後、6ハイの冷間圧延機(ワークロー
ル径200mm)2スタンドを使用して冷間圧延を行っ
た。圧延油は鉱物油を使用した。圧延率は75%であっ
た。次いで、950℃で30分間軟化焼鈍処理を行な
い、この後、40℃の硝酸、フッ酸の混酸中に浸漬して
残存している普通鋼板を完全に除去した。このようにし
て全圧延率が97%で製品厚みが1.00mmのNi合
金クラッドステンレス鋼板を製造した。 (実施例2)熱間圧延終止温度を880℃とし、熱間圧
延後の焼鈍後の酸洗時に普通鋼板を完全に除去し、冷間
圧延後に光輝焼鈍を行った以外は実施例1と同様にして
全圧延率が97%で製品厚みが1.00mmのNi合金
クラッドステンレス鋼板を製造した。 (実施例3)捨て材として鉄系溶射皮膜を使用し、熱間
圧延終止温度を900℃とし、熱間圧延後の焼鈍後の酸
洗時に一部の溶射皮膜を除去して、残存する溶射皮膜の
厚みを0.27とした以外は実施例1と同様にして全圧
延率が97%で製品厚みが1.00mmのNi合金クラ
ッドステンレス鋼板を製造した。 (実施例4)熱間圧延終止温度を890℃とし、熱間圧
延後の焼鈍後の酸洗時に溶射皮膜を完全に除去し、冷間
圧延後に光輝焼鈍を行った以外は実施例1と同様にして
全圧延率が97%で製品厚みが1.00mmのNi合金
クラッドステンレス鋼板を製造した。 (実施例5)合せ材として化学組成がNi:65.5
%、Cu:29.5%、Fe:1.2%、Al:2.7
%、Ti:0.6%(「MONEL alloy K−
500」商品名 大同インコアロイ株式会社製)のNi
合金を使用し、熱間圧延終止温度を870℃とした以外
は実施例1と同様にして全圧延率が97%で製品厚みが
1.00mmのNi合金クラッドステンレス鋼板を製造
した。 (実施例6)合せ材として、化学組成がNi:57.0
%、Cr:15.5%、Mo:16.0%、Fe:6.
0%、W:4.0%、V:0.3%、C:0.01%
(「INCO alloyC−276」商品名 大同イ
ンコアロイ株式会社製)のNi合金を使用し、熱間圧延
終止温度を860℃とした以外は実施例1と同様にして
全圧延率が97%で製品厚みが1.00mmのNi合金
クラッドステンレス鋼板を製造した。 (実施例7)化学組成がNi:57.0%、Cr:2
0.5%、Mo:14.2%、Fe:2.3%、W:
3.2%、V:0.25%、C:0.01%(「INC
ONELalloy 622」商品名 大同インコアロ
イ株式会社製)のNi合金を使用した以外は実施例1と
同様にして全圧延率が97%で製品厚みが1.00mm
のNi合金クラッドステンレス鋼板を製造した。 (実施例8)合せ材として、化学組成がNi:57.0
%、Cr:20.5%、Mo:14.2%、Fe:2.
3%、W:3.9%、C:0.01%(「INCONE
Lalloy 686」商品名 大同インコアロイ株式
会社製)のNi合金を使用し、熱間圧延終止温度を88
0℃とした以外は実施例1と同様にして全圧延率が97
%で製品厚みが1.00mmのNi合金クラッドステン
レス鋼板を製造した。 (実施例9)Ni合金クラッドステンレススラブの加熱
温度を800℃とし、熱間圧延温度を750℃とし、熱
間圧延終止温度を510℃とし、熱間圧延後の焼鈍後の
酸洗時に一部の普通鋼板を除去して、残存する普通鋼板
の厚みを0.27とした以外は実施例1と同様にして全
圧延率が97%で製品厚みが1.00mmのNi合金ク
ラッドステンレス鋼板を製造した。 (実施例10)Ni合金クラッドステンレススラブの加
熱温度を1300℃とし、熱間圧延温度を1250℃と
し、熱間圧延終止温度を1020℃とし、熱間圧延後の
焼鈍後の酸洗時に一部の普通鋼板を除去して、残存する
普通鋼板の厚みを0.22とした以外は実施例1と同様
にして全圧延率が97%で製品厚みが1.00mmのN
i合金クラッドステンレス鋼板を製造した。 (実施例11)熱間圧延後の焼鈍温度を750℃とし、
冷間圧延後の焼鈍温度を750℃とした以外は実施例1
と同様にして全圧延率が97%で製品厚みが1.00m
mのNi合金クラッドステンレス鋼板を製造した。 (実施例12)熱間圧延終止温度を880℃とし、熱間
圧延後の焼鈍温度を1050℃とし、冷間圧延後の焼鈍
温度を1050℃とした以外は実施例1と同様にして全
圧延率が97%で製品厚みが1.00mmのNi合金ク
ラッドステンレス鋼板を製造した。 (比較例1)捨て材を使用しないで、熱間圧延終止温度
を900℃とした以外は実施例1と同様にして全圧延率
が97%で製品厚みが1.00mmのNi合金クラッド
ステンレス鋼板を製造した。 (比較例2)捨て材を使用しないで、熱間圧延終止温度
を910℃とした以外は実施例1と同様にして全圧延率
が97%で製品厚みが1.00mmのNi合金クラッド
ステンレス鋼板を製造した。 (比較例3)母材として、ステンレス鋼スラブの代わり
に、化学組成がC:0.06%、Si:0.03%、M
n:0.42%、P:0.02%、S:0.02%、F
e:Bal.(「SS400」記号)で、厚さ30m
m、縦2000mm、横1000mmの普通鋼板を使用
し、捨て材を使用しなかった以外は実施例1と同様にし
製品厚みが1.00mmのNi合金クラッド鋼板を製造
した。 (比較例4)母材として、ステンレス鋼スラブの代わり
に、化学組成がC:0.06%、Si:0.03%、M
n:0.42%、P:0.02%、S:0.02%、F
e:Bal.(「SS400」記号)で、厚さ30m
m、縦2000mm、横1000mmの普通鋼板を使用
し、捨て材として厚さが2.00mmの普通鋼板を使用
し、熱間圧延終止温度を880℃とした以外は実施例1
と同様にし製品厚みが1.00mmのNi合金クラッド
鋼板を製造した。 (比較例5)母材として、ステンレス鋼スラブの代わり
に、化学組成がC:0.06%、Si:0.03%、M
n:0.42%、P:0.02%、S:0.02%、F
e:Bal.(「SS400」記号)で、厚さ30m
m、縦2000mm、横1000mmの普通鋼板を使用
し、捨て材として厚さが2.00mmの鉄系溶射皮膜を
使用した以外は実施例1と同様にし製品厚みが1.00
mmのNi合金クラッド鋼板を製造した。 (比較例6)合せ材として、Ni合金の代わりに、化学
組成がC:0.008%、Si:0.47%、Mn:
0.35%、P:0.02%、S:0.0009%、N
i:24.92%、Cr:23.09%、Mo:5.4
3%、N:0.17、Fe:Bal.(「SUS317
J4L」記号)で、厚み1.5mm、縦1950mm、
横950mmのステンレス鋼を使用し、捨て材を使用し
ないで熱間圧延終止温度を950℃とした以外は実施例
1と同様にし製品厚みが1.00mmのステンレス鋼ク
ラッドスレンレス鋼板を製造した。 (比較例7)化学組成がC:0.06%、Si:0.8
0%、Mn:1.50%、P:0.03%、S:0.0
2%、Ni:8.50%、Cr:18.80%、Fe:
Bal.で、厚み0.9mm、縦2000mm、横10
00mmのステンレス薄鋼板を母材とした。
After that, cold rolling was performed using a 6-high cold rolling mill (work roll diameter 200 mm) 2 stands. Mineral oil was used as the rolling oil. The rolling rate was 75%. Then, a softening annealing treatment was performed at 950 ° C. for 30 minutes, and thereafter, it was immersed in a mixed acid of nitric acid and hydrofluoric acid at 40 ° C. to completely remove the remaining ordinary steel sheet. In this way, a Ni alloy clad stainless steel sheet having a total rolling rate of 97% and a product thickness of 1.00 mm was manufactured. (Example 2) Same as Example 1 except that the final temperature of hot rolling was 880 ° C, the ordinary steel sheet was completely removed during pickling after annealing after hot rolling, and bright annealing was performed after cold rolling. Then, a Ni alloy clad stainless steel sheet having a total rolling rate of 97% and a product thickness of 1.00 mm was manufactured. (Example 3) An iron-based thermal spray coating was used as a waste material, the hot rolling end temperature was set to 900 ° C, and a part of the thermal spray coating was removed during pickling after annealing after hot rolling, and the remaining thermal spray was applied. A Ni alloy clad stainless steel sheet having a total rolling ratio of 97% and a product thickness of 1.00 mm was manufactured in the same manner as in Example 1 except that the thickness of the coating was 0.27. (Example 4) Same as Example 1 except that the hot rolling finish temperature was 890 ° C, the sprayed coating was completely removed during pickling after annealing after hot rolling, and bright annealing was performed after cold rolling. Then, a Ni alloy clad stainless steel sheet having a total rolling rate of 97% and a product thickness of 1.00 mm was manufactured. (Embodiment 5) As a composite material, the chemical composition is Ni: 65.5.
%, Cu: 29.5%, Fe: 1.2%, Al: 2.7
%, Ti: 0.6% ("MONEL alloy K-
500 "Ni manufactured by Daido Incoalloy Co., Ltd.
An Ni alloy clad stainless steel sheet having a total rolling ratio of 97% and a product thickness of 1.00 mm was manufactured in the same manner as in Example 1 except that the alloy was used and the hot rolling final temperature was 870 ° C. (Example 6) As a composite material, the chemical composition was Ni: 57.0.
%, Cr: 15.5%, Mo: 16.0%, Fe: 6.
0%, W: 4.0%, V: 0.3%, C: 0.01%
(“INCO alloy C-276” trade name, manufactured by Daido Incoalloy Co., Ltd.) was used, and the total rolling ratio was 97% and the product thickness was 97% in the same manner as in Example 1 except that the hot rolling final temperature was 860 ° C. Of 1.00 mm of Ni alloy clad stainless steel plate was manufactured. (Example 7) The chemical composition is Ni: 57.0%, Cr: 2
0.5%, Mo: 14.2%, Fe: 2.3%, W:
3.2%, V: 0.25%, C: 0.01% (“INC
ONELalloy 622 "(trade name, manufactured by Daido Incoalloy Co., Ltd.), except that a Ni alloy was used, the total rolling ratio was 97% and the product thickness was 1.00 mm in the same manner as in Example 1.
Of Ni alloy clad stainless steel sheet was manufactured. (Example 8) As a composite material, the chemical composition was Ni: 57.0.
%, Cr: 20.5%, Mo: 14.2%, Fe: 2.
3%, W: 3.9%, C: 0.01% ("INCONE
Lalloy 686 ”trade name, manufactured by Daido Incoalloy Co., Ltd.) is used, and the hot rolling end temperature is 88.
The total rolling ratio was 97 as in Example 1 except that the temperature was 0 ° C.
%, A Ni alloy clad stainless steel plate having a product thickness of 1.00 mm was manufactured. (Example 9) The heating temperature of the Ni alloy clad stainless slab was set to 800 ° C, the hot rolling temperature was set to 750 ° C, the hot rolling end temperature was set to 510 ° C, and part of it was subjected to pickling after annealing after hot rolling. No. 3 ordinary steel plate was removed and the thickness of the remaining ordinary steel plate was changed to 0.27 to produce a Ni alloy clad stainless steel plate having a total rolling ratio of 97% and a product thickness of 1.00 mm in the same manner as in Example 1. did. (Example 10) A heating temperature of a Ni alloy clad stainless slab was set to 1300 ° C, a hot rolling temperature was set to 1250 ° C, a hot rolling end temperature was set to 1020 ° C, and a part of it was pickled after annealing after hot rolling. N of a total rolling ratio of 97% and a product thickness of 1.00 mm was carried out in the same manner as in Example 1 except that the ordinary steel plate of No. 2 was removed and the thickness of the remaining ordinary steel plate was changed to 0.22.
An i alloy clad stainless steel plate was manufactured. (Example 11) The annealing temperature after hot rolling was set to 750 ° C,
Example 1 except that the annealing temperature after cold rolling was 750 ° C.
Similar to the above, the total rolling rate is 97% and the product thickness is 1.00 m.
m Ni alloy clad stainless steel sheet was manufactured. (Example 12) All rolling was carried out in the same manner as in Example 1 except that the final temperature of hot rolling was 880 ° C, the annealing temperature after hot rolling was 1050 ° C, and the annealing temperature after cold rolling was 1050 ° C. A Ni alloy clad stainless steel plate having a rate of 97% and a product thickness of 1.00 mm was manufactured. (Comparative Example 1) A Ni alloy clad stainless steel sheet having a total rolling rate of 97% and a product thickness of 1.00 mm was prepared in the same manner as in Example 1 except that the final rolling temperature of hot rolling was set to 900 ° C without using a discarded material. Was manufactured. (Comparative Example 2) A Ni alloy clad stainless steel plate having a total rolling ratio of 97% and a product thickness of 1.00 mm was prepared in the same manner as in Example 1 except that the final rolling temperature of hot rolling was set to 910 ° C without using a discarded material. Was manufactured. (Comparative Example 3) As a base material, instead of a stainless steel slab, the chemical composition was C: 0.06%, Si: 0.03%, M
n: 0.42%, P: 0.02%, S: 0.02%, F
e: Bal. (“SS400” symbol), thickness 30m
A Ni alloy clad steel plate with a product thickness of 1.00 mm was manufactured in the same manner as in Example 1 except that a normal steel plate having a length of m, a length of 2000 mm, and a width of 1000 mm was used, and no discarded material was used. (Comparative Example 4) As a base material, instead of a stainless steel slab, the chemical composition was C: 0.06%, Si: 0.03%, M
n: 0.42%, P: 0.02%, S: 0.02%, F
e: Bal. (“SS400” symbol), thickness 30m
Example 1 except that an ordinary steel plate having a length of m, a length of 2000 mm, and a width of 1000 mm was used, an ordinary steel plate having a thickness of 2.00 mm was used as a waste material, and a hot rolling final temperature was 880 ° C.
A Ni alloy clad steel plate having a product thickness of 1.00 mm was manufactured in the same manner as in. (Comparative Example 5) As a base material, instead of a stainless steel slab, the chemical composition was C: 0.06%, Si: 0.03%, M
n: 0.42%, P: 0.02%, S: 0.02%, F
e: Bal. (“SS400” symbol), thickness 30m
The product thickness is 1.00 in the same manner as in Example 1 except that a plain steel plate having a length of m, a length of 2000 mm, and a width of 1000 mm is used, and an iron-based thermal spray coating having a thickness of 2.00 mm is used as a discarded material.
mm Ni alloy clad steel plate was manufactured. (Comparative Example 6) As a composite material, instead of a Ni alloy, the chemical composition was C: 0.008%, Si: 0.47%, Mn:
0.35%, P: 0.02%, S: 0.0009%, N
i: 24.92%, Cr: 23.09%, Mo: 5.4
3%, N: 0.17, Fe: Bal. ("SUS317
"J4L" symbol), thickness 1.5 mm, length 1950 mm,
A stainless steel clad stainless steel sheet having a product thickness of 1.00 mm was manufactured in the same manner as in Example 1 except that 950 mm wide stainless steel was used and the hot rolling final temperature was 950 ° C. without using a waste material. (Comparative Example 7) The chemical composition is C: 0.06%, Si: 0.8
0%, Mn: 1.50%, P: 0.03%, S: 0.0
2%, Ni: 8.50%, Cr: 18.80%, Fe:
Bal. And thickness 0.9mm, length 2000mm, width 10
A 00 mm stainless steel sheet was used as a base material.

【0027】次に、ステンレス薄鋼板と化学組成がN
i:66.5%、Cu:31.5%、Fe:1.2%
(「MONEL alloy 400」商品名 大同イ
ンコアロイ株式会社製)で厚み0.1mm、縦2000
mm、横1000mmの合わせ材であるNi合金薄板を
ポリエステル系接着剤により接合してNi合金積層ステ
ンレス鋼板を製造した。
Next, the stainless steel sheet and the chemical composition are N
i: 66.5%, Cu: 31.5%, Fe: 1.2%
(“MONEL alloy 400” product name, manufactured by Daido Incoalloy Co., Ltd.) with a thickness of 0.1 mm and a length of 2000
mm, the width of 1000 mm, a Ni alloy thin plate, which is a laminated material, was joined with a polyester adhesive to produce a Ni alloy laminated stainless steel plate.

【0028】このようにして製造したNi合金クラッド
ステンレス鋼板等について以下の品質を評価した。結果
を第2表に示す。 1)外観 熱延後焼鈍後及び冷延後焼鈍後の外観を目視観察して異
常の有無を観察した。 ○:均一な外観(スケールの残存がない) ×:表面欠陥(荒れ、Ni合金層めくれ、Ni合金のス
ケール等)が有る場合 2)圧延性 ○:圧延時間、パス回数、圧延パワーが少ない ×:圧延時間、パス回数、圧延パワーが多い 3)表面仕上げ A:JIS G 4305に規定されたダル仕上げ、2
B仕上げなどの各種表面仕上げが可能 B:JIS G 4305に規定されたBA仕上げが可
能 C:酸化スケールが残存している 4)コスト 比較例1の従来工法を100として数値で示す 5)剥離試験 実施例1乃至12及び比較例1乃至6のクラッド鋼板の
母材と合わせ材の接着強度を、熱間圧延後の状態で剪断
強度測定試験により測定した。これは、冷間圧延後の状
態ではクラッド鋼板が薄すぎて測定のための試験片作成
が困難であること、そして母材と合わせ材の接合強さは
熱間圧延終了時にほぼ決定されるからである。
The following quality was evaluated for the Ni alloy clad stainless steel plate and the like manufactured as described above. The results are shown in Table 2. 1) Appearance The appearance after annealing after hot rolling and after annealing after cold rolling was visually observed to see if there was any abnormality. ○: Uniform appearance (no scale remains) ×: Surface defects (roughness, Ni alloy layer turning, Ni alloy scale, etc.) 2) Rollability ○: Rolling time, number of passes, rolling power is small × : Rolling time, number of passes, rolling power is large 3) Surface finish A: Dull finish specified in JIS G 4305, 2
Various surface finishes such as B finish are possible B: BA finish stipulated in JIS G 4305 is possible C: Oxide scale remains 4) Cost Shown numerically with the conventional method of Comparative Example 1 as 100 5) Peeling test The adhesive strength between the base material and the laminated material of the clad steel sheets of Examples 1 to 12 and Comparative Examples 1 to 6 was measured by a shear strength measurement test after hot rolling. This is because the clad steel plate is too thin after cold rolling to make test pieces for measurement, and the joint strength between the base material and the laminated material is almost determined at the end of hot rolling. Is.

【0029】幅25mm、長さ150mm(圧延方向)
のクラッド熱延鋼板を切り出し、長手方向と直角に試験
片の中央部で10mm間隔の切り欠きノッチを2本入れ
る。1本は母材側から合わせ材との境界に達する深さま
で切り欠き、もう1本は合わせ材側から母材との境界に
達する深さまで切り欠く。従って、中央部には、幅25
mm、長さ10mm(=250mm2 )の元の状態の接
合面が残る。この試験片を両側から引張り試験機で引張
り速度10mm/分で引張り、剥離する強度を剪断強度
として測定し、単位はkgf/mm2 とした。
Width 25 mm, length 150 mm (rolling direction)
The clad hot-rolled steel sheet is cut out, and two notches with 10 mm intervals are inserted at the center of the test piece at right angles to the longitudinal direction. One is cut from the base material side to a depth reaching the boundary with the laminated material, and the other is cut to a depth reaching the boundary with the base material from the laminated material side. Therefore, the width of 25
The original bonding surface of mm and length of 10 mm (= 250 mm 2 ) remains. This test piece was pulled from both sides by a tensile tester at a pulling speed of 10 mm / min, and the peeling strength was measured as shear strength, and the unit was kgf / mm 2 .

【0030】比較例7のNi合金積層ステンレス鋼板に
ついては、幅25mm、長さ150mmの試験片に、同
様にして、母材及び合わせ材から接着剤層に達するまで
の切り欠きノッチを2本入れて、同様にして剪断強度を
測定した。そして、剥離した界面を観察した。 ○:母材と合わせ材との界面剥離が認められないもの ×:母材と合わせ材との界面剥離が認められるもの 6)2回0T曲げ試験 製品の合わせ材側が内側になるように0T曲げを行った
のち、反対方向、即ち、外側になるように再度0T密着
曲げを施したのち、平板状に戻し断面方向より、母材と
合わせ材間の剥離状況を観察した。
For the Ni alloy laminated stainless steel sheet of Comparative Example 7, two notch notches from the base material and the laminated material to the adhesive layer were similarly put in a test piece having a width of 25 mm and a length of 150 mm. Then, the shear strength was measured in the same manner. Then, the separated interface was observed. ◯: No interfacial peeling between the base material and the laminated material was found. X: Interfacial peeling between the base material and the laminated material was observed. 6) 2 times 0T bending test. 0T bending so that the laminated material side of the product was on the inside. After performing the above, after performing 0T close contact bending again in the opposite direction, that is, on the outside, the plate was returned to a flat plate shape and the peeling state between the base material and the laminated material was observed from the cross-sectional direction.

【0031】 ○:試験前に比し何らの異常や劣化の認められないもの △:母材と合わせ材間に剥離が若干発生しているもの ×:剥離がはっきりと認められる程度のもの 7)塩水噴霧試験 2回0T曲げ試験の観察終了後の試験片を、5%食塩水
(40℃)に3週間浸漬し、端面での剥離進行状況を観
察した。
◯: No abnormality or deterioration was observed compared to before the test Δ: Slight peeling occurred between the base material and the laminated material x: Peeling was clearly observed 7) Salt spray test The test piece after the observation of the 2 times 0T bending test was immersed in 5% saline (40 ° C.) for 3 weeks, and the progress of peeling on the end face was observed.

【0032】 ○:試験前に比し何らの異常や劣化の認められないもの △:母材と合わせ材間に剥離が若干発生しているもの ×:剥離がはっきりと認められる程度のもの 8)ヒートサイクルテスト 50×150mmの試験片を、120℃の熱シリコンオ
イル浴浸漬5分→室温まで冷却保持(ブロアーで冷風送
風)5分を1サイクルとする繰り返し試験を1500回
まで行い、母材と合わせ材間の膨張率に起因する応力に
よる端面での剥離の有無を観察した。
◯: No abnormality or deterioration was observed as compared with before the test Δ: Slight peeling occurred between the base material and the laminated material x: Peeling was clearly recognized 8) Heat Cycle Test A test piece of 50 × 150 mm was immersed in a hot silicone oil bath at 120 ° C. for 5 minutes and kept cooled to room temperature (blowing with a blower) for 5 minutes. Repeated test was repeated 1500 times up to 1500 times. The presence or absence of peeling at the end face due to the stress due to the expansion coefficient between the laminated materials was observed.

【0033】○:冷熱サイクル付与後の剥離試験でも初
期と同様に何らの異常や劣化の認められないもの △:曲げ等の加工部位で合わせ材の剥離が若干発生して
いるもの ×:クラッド層の剥離がはっきりと認められる程度のも
の 第1表 製造条件(1) 母材 合せ材 捨て材 接合法 製品 熱延 熱延終 材料 厚 材料 厚 材料 厚 厚 温度 止温度 実施例1 SUS304 30 MONEL400 1.5 普通鋼 2.0 圧延 1.0 1150 890 2 SUS304 30 MONEL400 1.5 普通鋼 0.4 圧延 1.0 1150 880 3 SUS304 30 MONEL400 1.5 溶射皮膜2.0 圧延 1.0 1150 900 4 SUS304 30 MONEL400 1.5 溶射皮膜0.4 圧延 1.0 1150 890 5 SUS304 30 MONEL K-500 1.5 普通鋼 2.0 圧延 1.0 1150 870 6 SUS304 30 INCO C-276 1.5 普通鋼 2.0 圧延 1.0 1150 860 7 SUS304 30 INCONEL 622 1.5 普通鋼 2.0 圧延 1.0 1150 890 8 SUS304 30 INCONEL 686 1.5 普通鋼 2.0 圧延 1.0 1150 880 9 SUS304 30 MONEL400 1.5 普通鋼 2.0 圧延 1.0 750 510 10 SUS304 30 MONEL400 1.5 普通鋼 2.0 圧延 1.0 1250 1020 11 SUS304 30 MONEL400 1.5 普通鋼 2.0 圧延 1.0 1150 890 12 SUS304 30 MONEL400 1.5 普通鋼 2.0 圧延 1.0 1150 880 比較例1 SUS304 30 MONEL400 1.5 − 圧延 1.0 1150 900 2 SUS304 30 MONEL400 1.5 − 圧延 1.0 1150 910 3 SUS304 30 MONEL400 1.5 − 圧延 1.0 1150 890 4 SS400 30 MONEL400 1.5 普通鋼 2.0 圧延 1.0 1150 880 5 SS400 30 MONEL400 1.5 溶射皮膜2.0 圧延 1.0 1150 890 6 SUS304 30 SUS317J4L 1.5 − 圧延 1.0 1150 950 7 SUS304 0.9 MONEL400 0.1 接着剤 1.0 − − 第2表 製造条件(2) 焼鈍 圧延率( %) 熱延後AP後 冷延後 冷延後AP後 熱延後 冷延後 HR CR TR 捨て材厚 焼鈍工法 捨て材厚 実施例1 950 950 87 75 97 0.25 AP 0.00 2 950 950 87 75 97 0.00 BA − 3 950 950 87 75 97 0.27 AP 0.00 4 950 950 87 75 97 0.00 BA − 5 950 950 87 75 97 0.24 AP 0.00 6 950 950 87 75 97 0.25 AP 0.00 7 950 950 87 75 97 0.25 AP 0.00 8 950 950 87 75 97 0.24 AP 0.00 9 950 950 87 75 97 0.27 AP 0.00 10 950 950 87 75 97 0.22 AP 0.00 11 750 750 87 75 97 0.25 AP 0.00 12 1050 1050 87 75 97 0.25 AP 0.00 比較例1 950 950 87 75 97 − AP − 2 950 950 87 75 97 − BA − 3 950 950 87 75 97 − AP − 4 950 950 87 75 97 0.28 AP 0.00 5 950 950 87 75 97 0.27 AP 0.00 6 950 950 87 75 97 − AP − 7 − − − − − − 第3表 品質評価試験 外観 圧延 表面 コスト 剥離 剪断 曲げ 塩水 ヒート 熱延後 冷延後 性 仕上 強度 強度 試験 噴霧 サイクル 実施例1 ○ ○ ○ A 70 ○ 37 ○ ○ ○ 2 ○ ○ ○ B 90 ○ 35 ○ ○ ○ 3 ○ ○ ○ A 65 ○ 36 ○ ○ ○ 4 ○ ○ ○ B 75 ○ 37 ○ ○ ○ 5 ○ ○ ○ A 75 ○ 31 ○ ○ ○ 6 ○ ○ ○ A 80 ○ 30 ○ ○ ○ 7 ○ ○ ○ A 80 ○ 33 ○ ○ ○ 8 ○ ○ ○ A 80 ○ 30 ○ ○ ○ 9 ○ ○ △ A 80 ○ 35 ○ ○ ○ 10 ○ ○ △ A 80 ○ 38 ○ ○ ○ 11 ○ ○ ○ A 80 ○ 37 △ ○ ○ 12 ○ ○ ○ A 80 ○ 36 ○ ○ ○ 比較例1 × × ○ C 100 ○ 32 ○ ○ ○ 2 × △ ○ C 110 ○ 34 ○ ○ ○ 3 × × ○ C 90 ○ 36 ○ × × 4 ○ ○ ○ A 60 ○ 31 ○ × × 5 ○ ○ ○ A 55 ○ 32 ○ × × 6 × × ○ A 45 ○ 39 ○ △ ○ 7 ○ ○ − A 180 × 0.3 × × × 第3表の結果より、比較例1、2、3のように捨て材を
使用しない場合は、外観が不良となるだけでなく、表面
仕上げに手間を要することになる。
◯: First in peeling test after application of cooling / heating cycle
No abnormalities or deterioration was observed as in the previous term. △: A slight amount of peeling of the laminated material occurred at the processing site such as bending.
Those with a crack: The peeling of the clad layer can be clearly recognized
Table 1 Manufacturing conditions (1)  Base material Laminated material Discarded material Bonding method Product Hot rolling Hot rolling End Material Thickness Material Thickness Material Thickness Temperature Stop Temperature Example 1 SUS304 30 MONEL400 1.5 plain steel 2.0 rolling 1.0 1150 890 2 SUS304 30 MONEL400 1.5 plain steel 0.4 rolling 1.0 1150 880 3 SUS304 30 MONEL400 1.5 spray coating 2.0 rolling 1.0 1150 900 4 SUS304 30 MONEL400 1.5 spray coating 0.4 rolling 1.0 1150 890 5 SUS304 30 MONEL K-500 1.5 Plain steel 2.0 Rolled 1.0 1150 870 6 6 SUS304 30 INCO C-276 1.5 Plain steel 2.0 Rolled 1.0 1150 860 7 SUS304 30 INCONEL 622 1.5 Plain steel 2.0 Rolled 1.0 1150 890 8 SUS304 30 INCONEL 686 1.5 Plain Steel 2.0 Rolled 1.0 1150 880 9 SUS304 30 MONEL400 1.5 Plain steel 2.0 Rolled 1.0 750 510 10 10 SUS304 30 MONEL400 1.5 Plain steel 2.0 Rolled 1.0 1250 1020 11 SUS304 30 MONEL400 1.5 Plain steel 2.0 Rolled 1.0 1150 89012 SUS304 30 MONEL400 1.5 Plain steel 2.0 Rolled 1.0 1150 880 Comparative Example 1 SUS304 30 MONEL400 1.5-rolling 1.0 1150 900 2 SUS304 30 MONEL400 1.5-rolling 1.0 1150 910 3 SUS304 30 MONEL400 1.5-rolling 1.0 1150 890 4 SS400 30 MONEL400 1.5 plain steel 2.0 rolling 1.0 1150 880 5 SS400 30 MONEL400 1.5 spraying Film 2.0 Rolled 1.0 1150 890 6 SUS304 30 SUS317J4L 1.5 − Rolled 1.0 1150 9507 SUS304 0.9 MONEL400 0.1 Adhesive 1.0 − − Table 2 Manufacturing conditions (2)  Annealing Rolling ratio (%) After hot rolling After AP After cold rolling After cold rolling After AP After hot rolling After cold rolling HR CR TR Discarded material thickness Annealing method Thick material thickness Example 1 950 950 87 75 97 0.25 AP 0.00 2 950 950 87 75 97 0.00 BA − 3 950 950 87 75 97 0.27 AP 0.00 4 950 950 87 75 97 0.00 BA − 5 950 950 87 75 97 0.24 AP 0.00 6 950 950 87 75 97 0.25 AP 0.00 7 950 950 87 75 97 0.25 AP 0.00 8 950 950 87 75 97 0.24 AP 0.00 9 950 950 87 75 97 0.27 AP 0.00 10 10 950 950 87 75 97 0.22 AP 0.00 11 11 750 750 87 75 97 0.25 AP 0.0012 1050 1050 87 75 97 0.25 AP 0.00 Comparative Example 1 950 950 87 75 97-AP-2 950 950 87 87 75 97-BA-3 950 950 87 75 97-AP-4 950 950 87 75 97 0.28 AP 0.00 5 950 950 87 75 97 0.27 AP 0.00 6 950 950 87 75 97-AP-7 − − − − − − Table 3 Quality evaluation test  Appearance Rolling Surface Cost Peeling Shear Bending Saltwater HeatAfter hot rolling After cold rolling Property Finishing strength Strength test Spraying cycle Example 1 ○ ○ ○ A 70 ○ 37 ○ ○ ○ 2 ○ ○ ○ B 90 ○ 35 ○ ○ ○ 3 ○ ○ ○ A 65 ○ 36 ○ ○ ○ 4 ○ ○ ○ B 75 ○ 37 ○ ○ ○ 5 ○ ○ ○ A 75 ○ 31 ○ ○ ○ 6 ○ ○ ○ A 80 ○ 30 ○ ○ ○ 7 ○ ○ ○ A 80 ○ 33 ○ ○ ○ 8 ○ ○ ○ A 80 ○ 30 ○ ○ ○ 9 ○ ○ △ A 80 ○ 35 ○ ○ ○ 10 ○ ○ △ A 80 ○ 38 ○ ○ ○ 11 ○ ○ ○ A 80 ○ 37 △ ○ ○12 ○ ○ ○ A 80 ○ 36 ○ ○ ○ Comparative Example 1 × × ○ C 100 ○ 32 ○ ○ ○ 2 × △ ○ C 110 ○ 34 ○ ○ ○ 3 × × ○ C 90 ○ 36 ○ × × 4 ○ ○ ○ A 60 ○ 31 ○ × × 5 ○ ○ ○ A 55 ○ 32 ○ × × 6 × × ○ A 45 ○ 39 ○ △ ○7 ○ ○ -A 180 × 0.3 × × × From the results shown in Table 3, as in Comparative Examples 1, 2, and 3,
If not used, not only will the appearance be poor, but the surface
It will take time and effort to finish.

【0034】一方、本発明の実施例にあっては、生産性
に優れるだけでなく、全ての品質に優れ、屋根材、壁材
等の外装材として好適に採用できることが判る。尚、実
施例10のように、熱間圧延温度を1250℃と高温に
した場合には、圧延性にやや問題がある。又、実施例1
1のように焼鈍温度を比較的低温にした場合には曲げ強
度にやや問題がある。
On the other hand, in the examples of the present invention, it is found that not only the productivity is excellent but also all the qualities are excellent, and it can be suitably used as an exterior material such as a roof material and a wall material. As in Example 10, when the hot rolling temperature was set to a high temperature of 1250 ° C, there was a slight problem in rollability. In addition, Example 1
When the annealing temperature is set to a relatively low temperature as in No. 1, there is a problem in bending strength.

【0035】[0035]

【発明の効果】請求項1の発明は、合わせ材であるNi
合金と母材であるステンレス鋼とを積層してNi合金ク
ラッドステンレススラブのNi合金層側に捨て材を接合
させ、次いで圧延し、焼鈍後捨て材を除去するものであ
って、圧延クラッドスラブは、界面近傍部の硬度分布が
なだらかなので、以降の熱延、冷延作業条件が幅広く設
定可能で製造条件の範囲が広くなり、更に圧延時の界面
剥離や形状不良に心配がない。又、爆着スラブに比べ
て、経済的負担が小さく、スラブの歩留りもよく、装置
も簡単である。しかも、スラブのNi合金層側に捨て材
を接合させ、焼鈍後に捨て材を除去するので、Ni合金
が酸化されて酸化スケールが付着することもなく、従っ
て、Ni合金の厚さが減少することもなく、経済的で表
面も美麗なものとなる。
According to the invention of claim 1, Ni which is a laminated material is used.
The alloy and the base material, stainless steel, are laminated to join the discarded material to the Ni alloy layer side of the Ni alloy clad stainless slab, and then rolled and annealed to remove the discarded material. Since the hardness distribution in the vicinity of the interface is gentle, the subsequent hot rolling and cold rolling working conditions can be set broadly, the range of manufacturing conditions is widened, and there is no concern about interfacial peeling or defective shape during rolling. In addition, the economical burden is smaller than that of explosive slabs, the slab yield is good, and the device is simple. Moreover, since the waste material is joined to the Ni alloy layer side of the slab and the waste material is removed after annealing, the Ni alloy is not oxidized and oxide scale does not adhere, and therefore the thickness of the Ni alloy is reduced. It is economical and has a beautiful surface.

【0036】請求項2の発明にあっては、熱間圧延後、
焼鈍した後の酸洗時に捨て材を除去するので、ステンレ
ス鋼の従来の酸洗ラインをそのまま採用でき、ショット
ブラスト等による材料の損失がなくなるものである。請
求項3の発明にあっては、熱間圧延後、焼鈍した後の酸
洗時に一部の捨て材を除去し、次いで冷間圧延後、焼鈍
した後の酸洗時に残部の捨て材を除去するので、この工
法においてもステンレス鋼の従来の酸洗ラインをそのま
ま採用でき、ショットブラスト等による材料の損失がな
くなるものである。
According to the invention of claim 2, after hot rolling,
Since the discarded material is removed during pickling after annealing, the conventional pickling line of stainless steel can be adopted as it is, and material loss due to shot blasting etc. is eliminated. According to the invention of claim 3, a part of the discarded material is removed during pickling after hot rolling and annealing, and then the rest of the discarded material is removed during pickling after cold rolling and annealing. Therefore, even in this construction method, the conventional pickling line of stainless steel can be adopted as it is, and the loss of material due to shot blasting or the like is eliminated.

【0037】請求項4の発明にあっては、Cuを含有さ
せることにより、加工性、圧延性が向上するものであ
り、又、Cr、Moを含有させることにより、耐食性が
更に大きくなるものである。請求項5の発明にあって
は、圧延性が著しく向上するものである。請求項6の発
明にあっては、普通鋼及び鉄系溶射皮膜は安価であり、
その除去も簡単で作業性に優れるものである。
In the invention of claim 4, the workability and rollability are improved by containing Cu, and the corrosion resistance is further increased by containing Cr and Mo. is there. According to the invention of claim 5, the rolling property is remarkably improved. In the invention of claim 6, the ordinary steel and the iron-based thermal spray coating are inexpensive,
Its removal is also easy and excellent in workability.

【0038】請求項7にあっては、熱間圧延を温度12
00℃以下で行うことにより、必要な圧延パワーが小さ
くなり、容易に圧延できるものである。請求項8の発明
にあっては、焼鈍を温度1000℃以下で行うことによ
り加工性が向上する。
In the seventh aspect, the hot rolling is performed at the temperature of 12
By performing the rolling at a temperature of 00 ° C. or less, the required rolling power is reduced and rolling can be easily performed. In the invention of claim 8, the workability is improved by performing the annealing at a temperature of 1000 ° C. or less.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 C22C 19/03 G ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location C22C 19/03 G

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】合わせ材であるNi合金と母材であるステ
ンレス鋼とを積層してNi合金クラッドステンレススラ
ブのNi合金層側に捨て材を接合させ、次いで圧延し、
焼鈍後捨て材を除去することを特徴とするNi合金クラ
ッドステンレス鋼板の製造方法。
1. A laminated material of a Ni alloy as a laminated material and a stainless steel as a base material, a discarded material is joined to the Ni alloy layer side of a Ni alloy clad stainless slab, and then rolled,
A method for producing a Ni alloy clad stainless steel sheet, which comprises removing the discarded material after annealing.
【請求項2】熱間圧延後、焼鈍した後の酸洗時に捨て材
を除去することを特徴とする請求項1記載のNi合金ク
ラッドステンレス鋼板の製造方法。
2. The method for producing a Ni alloy clad stainless steel sheet according to claim 1, wherein the waste material is removed during pickling after annealing after hot rolling.
【請求項3】熱間圧延後、焼鈍した後の酸洗時に一部の
捨て材を除去し、次いで冷間圧延後、焼鈍した後の酸洗
時に残部の捨て材を除去することを特徴とする請求項1
記載のNi合金クラッドステンレス鋼板の製造方法。
3. After hot rolling, a part of the discarded material is removed during pickling after annealing, and after cold rolling, the remaining discarded material is removed during pickling after annealing. Claim 1
A method for producing the Ni alloy clad stainless steel sheet described.
【請求項4】合わせ材であるNi合金の主要化学組成
が、Niと、Cu、Cr及びMoから成る群れから選ば
れた1種乃至2種以上であることを特徴とする請求項
1、2又は3記載のNi合金クラッドステンレス鋼板の
製造方法。
4. The main chemical composition of a Ni alloy as a composite material is one or more selected from the group consisting of Ni and Cu, Cr and Mo, and is characterized in that: Alternatively, the method for manufacturing the Ni alloy clad stainless steel sheet according to 3 above.
【請求項5】合わせ材であるNi合金の主要化学組成
が、Ni60〜70wt%、Cu30〜40wt%であ
ることを特徴とする請求項1、2、3又は4記載のNi
合金クラッドステンレス鋼板の製造方法。
5. The Ni according to claim 1, 2, 3 or 4, wherein the main chemical composition of the Ni alloy as the composite material is 60 to 70 wt% of Ni and 30 to 40 wt% of Cu.
Manufacturing method of alloy clad stainless steel sheet.
【請求項6】捨て材が普通鋼板又は鉄系溶射皮膜である
ことを特徴とする請求項1、2、4又は5記載のNi合
金クラッドステンレス鋼板の製造方法。
6. The method for producing a Ni alloy clad stainless steel sheet according to claim 1, wherein the discarded material is a normal steel sheet or an iron-based thermal spray coating.
【請求項7】熱間圧延を温度1200℃以下で行うこと
を特徴とする請求項1、2、3、4、5又は6記載のN
i合金クラッドステンレス鋼板の製造方法。
7. N according to claim 1, wherein the hot rolling is performed at a temperature of 1200 ° C. or lower.
Method for manufacturing i-alloy clad stainless steel sheet.
【請求項8】焼鈍を温度1000℃以下で行うことを特
徴とする請求項1、2、3、4、5、6又は7記載のN
i合金クラッドステンレス鋼板の製造方法。
8. The N according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the annealing is performed at a temperature of 1000 ° C. or lower.
Method for manufacturing i-alloy clad stainless steel sheet.
JP31866194A 1994-12-21 1994-12-21 Production of ni alloy clad stainless steel sheet Withdrawn JPH08174239A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31866194A JPH08174239A (en) 1994-12-21 1994-12-21 Production of ni alloy clad stainless steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31866194A JPH08174239A (en) 1994-12-21 1994-12-21 Production of ni alloy clad stainless steel sheet

Publications (1)

Publication Number Publication Date
JPH08174239A true JPH08174239A (en) 1996-07-09

Family

ID=18101630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31866194A Withdrawn JPH08174239A (en) 1994-12-21 1994-12-21 Production of ni alloy clad stainless steel sheet

Country Status (1)

Country Link
JP (1) JPH08174239A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008502486A (en) * 2004-06-10 2008-01-31 エイティーアイ・プロパティーズ・インコーポレーテッド Clad alloy substrate and manufacturing method thereof
CN100440585C (en) * 2005-01-14 2008-12-03 谢振华 Method of processing electrode lugs in cell or conductive metal plates between cells
JP4327357B2 (en) * 1998-06-03 2009-09-09 株式会社Neomaxマテリアル Clad material and manufacturing method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4327357B2 (en) * 1998-06-03 2009-09-09 株式会社Neomaxマテリアル Clad material and manufacturing method thereof
JP2008502486A (en) * 2004-06-10 2008-01-31 エイティーアイ・プロパティーズ・インコーポレーテッド Clad alloy substrate and manufacturing method thereof
JP2012179656A (en) * 2004-06-10 2012-09-20 Ati Properties Inc Clad alloy substrate and method for making the same
US8387228B2 (en) 2004-06-10 2013-03-05 Ati Properties, Inc. Clad alloy substrates and method for making same
US8813342B2 (en) 2004-06-10 2014-08-26 Ati Properties, Inc. Clad alloy substrates and method for making same
CN100440585C (en) * 2005-01-14 2008-12-03 谢振华 Method of processing electrode lugs in cell or conductive metal plates between cells

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