JPS61147979A - Method and device for producing clad steel - Google Patents

Method and device for producing clad steel

Info

Publication number
JPS61147979A
JPS61147979A JP26931284A JP26931284A JPS61147979A JP S61147979 A JPS61147979 A JP S61147979A JP 26931284 A JP26931284 A JP 26931284A JP 26931284 A JP26931284 A JP 26931284A JP S61147979 A JPS61147979 A JP S61147979A
Authority
JP
Japan
Prior art keywords
inductor
roll
frequency current
base material
metal
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
Application number
JP26931284A
Other languages
Japanese (ja)
Inventor
Hayao Kurahashi
倉橋 速生
Yoichi Nakai
中井 揚一
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP26931284A priority Critical patent/JPS61147979A/en
Publication of JPS61147979A publication Critical patent/JPS61147979A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K13/00Welding by high-frequency current heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

PURPOSE:To take full advantage of the corrosion resistance of a cladding metal even if said metal is a stainless steel without complexity in stage by pressurizing the superposed surfaces of a base metal to be joined and cladding metal and subjecting the same to high-frequency electrical heating then to induction heating by an inductor thereby joining the two metals. CONSTITUTION:The cladding metal 11 which is a nonmagnetic material, etc. such as, for example, stainless steel sheet and the base metal 12 which is a low alloy steel, etc. are superposed and high-frequency current is passed to these metals by a pair of contact rolls 3 provided on both sides thereof. A roll 6 for press contact in common use as the inductor and a feed roll 7 are disposed above and below said part. The roll 6 consists mainly of a supporting roll 9 made of steel, a non-conductive material 8 such as ceramics and the inductors 10. The respective inductors 10 are cooled by the cooling water fed from a duct 13 at the center through a branch water circuit 15 and an inductor cooling water circuit 14. The inductor 10 arriving at the lowermost point of the roll 6 contacts with a high-frequency current circuit 3b and a sliding type contact 3c is provided to the top end of the circuit 3b. The induction heating is executed only by the lowermost point.

Description

【発明の詳細な説明】 〈発明の目的〉 産業上の利用分野 本発明はクラッド鋼の製造方法ならびにその製造装置に
係り、詳しくは、高周波電流を通電して加熱すると共に
、誘導子を用いて誘導加熱し、これと同時に圧着してク
ラッド鋼を製造する方法ならびにその製造装置に係る。
[Detailed Description of the Invention] <Object of the Invention> Industrial Application Field The present invention relates to a method for producing clad steel and an apparatus for producing the same. The present invention relates to a method of manufacturing clad steel by induction heating and simultaneous pressure bonding, and a manufacturing apparatus therefor.

従来の技術 最近の化学工業の発達により、取扱いから物質は多種多
様をきわめ、それらを製造、運搬、貯蔵するための容器
は取扱う物質に応じて適正材料を選定して製造されるか
、または、表面に塗装を施されて使用されている。
BACKGROUND OF THE INVENTION With the recent development of the chemical industry, a wide variety of substances are being handled, and containers for producing, transporting, and storing them are manufactured by selecting appropriate materials depending on the substances being handled, or It is used with a painted surface.

例えば、ケミカルタンカーの場合には、従来から表面塗
装が主流であった。
For example, in the case of chemical tankers, surface coating has traditionally been the mainstream.

しかし、昨今は積載物質の種類が増加し、これら数種類
の物質に化学物質に安定な塗膜が少なく、補修頻度がき
わめて高くなっている。そのため、メンテナンス・フリ
ーの特長が生かせるステンレス鋼でタンクを作るケミカ
ルタンカーが多くなって、とくに、ステンレス・クラッ
ド鋼板の需要が著しく増しているが、クラッド鋼板であ
るが故に、必ずしも、ステンレス鋼と□ しての特性が十分に発揮できない。
However, in recent years, the number of types of loaded materials has increased, and there are few coatings that are stable against chemicals for these types of materials, and the frequency of repair has become extremely high. For this reason, more and more chemical tankers are making their tanks with stainless steel, which has the advantage of being maintenance-free, and the demand for stainless steel clad steel sheets in particular has increased significantly. cannot fully demonstrate its characteristics.

二N’に、従来のステンレス・クラッド鋼板の製造方法
をみると、(1)鋳込み圧延法、(2)組立て圧延法、
(3)爆着圧延法、(4)肉盛圧延法に大別できる。し
かし、これら何れの方法でも、製造工程が煩雑でかつ歩
止りも低い。従って、−クラッド鋼板にすることのコス
ト・メリットが予想以上に小さい。その上、クラッド鋼
板であるがために、ステンレス鋼に要求される熱処理が
十分に施すことができず、そ、のため、クラッド鋼板の
ステンレス鋼層に、その化学成分に見合った耐食性が1
00%発揮できない欠点まである。
2N', looking at the conventional manufacturing methods of stainless steel clad steel sheets, there are (1) cast rolling method, (2) assembly rolling method,
It can be roughly divided into (3) explosion rolling method and (4) overlay rolling method. However, in any of these methods, the manufacturing process is complicated and the yield is low. Therefore, the cost advantage of using a -clad steel plate is smaller than expected. Furthermore, since it is a clad steel plate, it cannot be sufficiently heat treated as required for stainless steel, and therefore the stainless steel layer of the clad steel plate has a corrosion resistance that is commensurate with its chemical composition.
There are even drawbacks that prevent you from performing 00%.

発明が解決しようとする問題点 本発明は上記欠点の解決を目的とし、具体的には、例え
ば、ステンレスクラッド鋼板の製造時に従来法において
は、上記の如く、製造工程の煩雑さと歩止りの低さとに
起因してコスト高が生じること、またステンレスwAI
の耐食性が十分に発揮することができないこと等の問題
点を解決し、しかも、従来法とは本質が全く相違する新
しいクラッド鋼板の製造方法を提案する。
Problems to be Solved by the Invention The present invention aims to solve the above-mentioned drawbacks. Specifically, for example, when manufacturing stainless clad steel sheets, the conventional method has problems such as the complexity of the manufacturing process and the low yield as described above. High costs occur due to stainless steel, and stainless steel wAI
We propose a new method for manufacturing clad steel sheets that solves problems such as the inability to fully demonstrate corrosion resistance, and is completely different in nature from conventional methods.

〈発明“の構成〉 問題点を解決するための 手段ならびにその作用 すなわち、本発明は、接合されるべき母材と合材を重ね
合わせ、この重ね合わせ面を加圧しかつ高周波通電加熱
するとともに誘導子により誘導加熱して接合することを
特徴とする。
<Structure of the invention> Means for solving the problem and its operation, that is, the present invention overlaps base materials and composite materials to be joined, pressurizes the overlapping surfaces, heats them with high frequency current, and heats them by induction. The feature is that the bonding is performed by induction heating using a child.

この手段たる構成ならびにその作用について図面によっ
て更に詳しく説明すると、次の通りである。
The structure of this means and its operation will be explained in more detail with reference to the drawings as follows.

なお、第1図は本発明を実施する際に使用するクラッド
装置の配置図であり、第2図は第1図に示すクラッド装
置の圧着ロールの一例の正面図であり、第3図はこの圧
着ロールに取付けた誘導子の一例の斜視図である。
Note that FIG. 1 is a layout diagram of a cladding device used in carrying out the present invention, FIG. 2 is a front view of an example of a pressure roll of the cladding device shown in FIG. 1, and FIG. FIG. 3 is a perspective view of an example of an inductor attached to a pressure roll.

まず、第1図において符号11は例えばステンレス鋼板
その他の非磁性材等の合材、12は例えば低合金鋼また
は炭素鋼等の母材を示し、これら合材11ならびに母材
12の表面はクラッドに先立って例えばショツトブラス
ト等によって前処理する。その後、合材11ならびに母
材12は、各ショット面を重ね合わせ、この状態で上部
の圧着ロール6と下部の送りロール7との間を通して、
この間に、圧着ロール6によって加圧すると同時に、こ
の加圧部は一対のコンタクト3から高周波電流を通電し
て直接加熱する一方、圧着ロール6に設けた誘導子10
によって誘導加熱し、この二重加熱により加圧部を溶融
若しくは半溶融状態にする。すなわち、加圧と同時に高
周波電流により二重加熱すると、合材11ならびに母材
12の各接合面の加圧部が局部的かつ効果的に加熱でき
、しかも、この加熱溶融若しくは半溶融の状態にあると
きに、加圧されて互いに接合できる。
First, in FIG. 1, reference numeral 11 indicates a composite material such as stainless steel plate or other non-magnetic material, and 12 indicates a base material such as low alloy steel or carbon steel. The surfaces of these composite materials 11 and base material 12 are clad. Prior to this, pretreatment is performed, for example, by shot blasting. After that, the mixed material 11 and the base material 12 are stacked with their respective shot surfaces, and in this state are passed between the upper pressure roll 6 and the lower feed roll 7,
During this time, the pressure is applied by the pressure roll 6, and at the same time, the pressure part is directly heated by applying high frequency current from the pair of contacts 3, while the inductor 1 provided on the pressure roll 6 is heated directly.
This double heating causes the pressurized part to be melted or semi-molten. That is, by double heating with high-frequency current at the same time as applying pressure, the pressurized parts of the joint surfaces of the composite material 11 and the base material 12 can be heated locally and effectively, and furthermore, the heated parts can be heated to a molten or semi-molten state. At some point, they can be pressed together and bonded together.

一般に、上記の如く、高周波電流の直接通電による加熱
と誘導子による誘導加熱とによって鋼材等の被加熱体を
効果的に加熱することを利用して鋼材の表面を硬化させ
る方法が知られている。この方法は、第6図(a)なら
びに(b)に示す如く、鋼材等の被加熱物体2の両側に
一対のターミナル等のコンタクト3を接触させて直接高
周波電流4を通電する一方、その直上に近接誘導子1を
配置し、被加熱物体2に通電された高周波電流4が近接
誘導子1を通って帰るようになっている。従って、被加
熱物体2の最表面に高周波電流4が集中し、表面層が効
率よく加熱でき、浸炭や浸炭窒化等の表面硬化熱処理の
代替処理として活用されている(1983年11月発行
金属臨時増刊号33頁)。本発明はこの高周波抵抗加熱
の原理を鋼材等の焼入れでなく、クラッド鋼板の製造に
単に適用するものでなく、この際に発生する諸問題を解
決して成立したものである。
Generally, as described above, there is a known method of hardening the surface of steel by effectively heating a heated object such as steel by heating by direct application of high-frequency current and induction heating by an inductor. . In this method, as shown in FIGS. 6(a) and 6(b), a pair of contacts 3 such as terminals are brought into contact with both sides of an object 2 to be heated such as a steel material, and a high-frequency current 4 is directly applied. A proximal inductor 1 is arranged in such a manner that a high frequency current 4 passed through the object to be heated 2 returns through the proximal inductor 1. Therefore, the high-frequency current 4 is concentrated on the outermost surface of the object to be heated 2, and the surface layer can be heated efficiently.This treatment is used as an alternative to surface hardening heat treatments such as carburizing and carbonitriding (Metal Extraordinary Issue, November 1983). Special issue, page 33). The present invention was established by not simply applying the principle of high-frequency resistance heating to the production of clad steel plates, rather than to the quenching of steel materials, etc., but by solving the various problems that occur at this time.

更に詳しく説明すると、本発明は、オーステナイト系ス
テンレス鋼の如き非磁性鋼板の合材と低合金鋼板又は炭
素鋼板の母材とを重ね合わせ、しかも、第1図に示す如
く、合材11ならびに母材12に対し、一対のコンタク
ト3により高周波電流を流しかつ合材11上の誘導子1
0により誘導加熱すると、合材11の表面でなく、高周
波電流はこれら低合金鋼板又は炭素鋼板等の母材12の
表面に集中することを知見し、これを応用するものとし
て成立したのである。しかし、この際に、誘導子の後に
圧着ロールを配置し、高周波抵抗加熱したのちに圧着す
ることも考えられるが、高周波抵抗加熱は局部的に限ら
れ、加熱後の冷却速度がきわめて早いため、圧着は技術
的にきわめて難かしい。この虫をいろいろの観点から改
良を試みたところ、高周波抵抗加熱と圧着とを同時に行
なうことによって圧着が可能となったのである。
To explain in more detail, the present invention involves laminating a composite material of non-magnetic steel sheets such as austenitic stainless steel and a base material of a low alloy steel sheet or a carbon steel sheet, and as shown in FIG. A high frequency current is applied to the material 12 through a pair of contacts 3, and the inductor 1 on the composite material 11 is
It was discovered that when induction heating is performed at 0, the high frequency current is concentrated not on the surface of the composite material 11 but on the surface of the base material 12 such as these low alloy steel plates or carbon steel plates, and it was established as an application of this. However, at this time, it may be possible to place a pressure roll after the inductor and perform high-frequency resistance heating before crimping, but high-frequency resistance heating is limited locally and the cooling rate after heating is extremely fast. Crimping is technically extremely difficult. After trying to improve this insect from various perspectives, it became possible to perform crimping by simultaneously performing high-frequency resistance heating and crimping.

また、この高周波抵抗加熱と圧着とを同時に行なうとき
、何れの方法によっても良いが、第1図、第2図ならび
に第3図、とくに、第1図ならびに第2図に示す如く、
円周方向に非導電物質8を介して誘導子10を装着した
圧着ロール6を用いるのが好ましい。
Further, when performing high frequency resistance heating and compression bonding at the same time, any method may be used, but as shown in FIGS. 1, 2, and 3, particularly, as shown in FIGS.
It is preferable to use a pressure roll 6 on which an inductor 10 is mounted via a non-conductive material 8 in the circumferential direction.

すなわち、第1図において母材12の上に合材11が重
ね合わされ、これら合材11ならびに母材12の両側に
コンタクト3が設けられ、一方のコンタクト3には導線
3aから高周波電流が通電され、このところの上下に圧
着ロール6と送りロール7とを配設されている。この圧
着ロール6は主として支持ロール9、セラミック等の非
導電物質8ならびに誘導子10から成っており、各誘導
子10には第2図に示す如く中心の冷部水ダクト13か
ら分岐水路14ならびに誘導子冷却水路15を経て冷却
水が送られ、各誘導子10が冷却され−、るよう構成さ
れている。換言すると、補強を、兼・ねた鋼製の支持ロ
ール9の周囲にセラミックスなどの絶縁体が被覆(溶射
塗布など)され非導電物質8が形成され、この非導電物
質8の周上に複数個の誘導子10が等間隔をおいて配置
されている。これら誘導子10は銅又は銅合金等の導電
物質から成っており、通常は、第3図に示す如き形状に
構成されている。また、各誘導子10には、第3図に示
す如く、一対の分岐水路15が接続され、これらが内部
の冷却水路14に連通している。
That is, in FIG. 1, a composite material 11 is superimposed on a base material 12, contacts 3 are provided on both sides of the composite material 11 and the base material 12, and a high frequency current is applied to one contact 3 from a conductor 3a. A pressure roll 6 and a feed roll 7 are disposed above and below this point. The pressure roll 6 mainly consists of a support roll 9, a non-conductive material 8 such as ceramic, and an inductor 10. Each inductor 10 is connected to a central cold water duct 13, a branch water channel 14, and an inductor 10, as shown in FIG. Cooling water is sent through an inductor cooling channel 15 to cool each inductor 10. In other words, a non-conductive material 8 is formed by coating (spraying, etc.) an insulating material such as ceramics around a steel support roll 9 that also serves as reinforcement, and a plurality of non-conductive materials are formed on the circumference of this non-conductive material 8. The inductors 10 are arranged at equal intervals. These inductors 10 are made of a conductive material such as copper or a copper alloy, and are usually constructed in the shape shown in FIG. Furthermore, as shown in FIG. 3, each inductor 10 is connected to a pair of branch water channels 15, which communicate with an internal cooling water channel 14.

従って、支持ロール9の中心の冷却水ダクト13から送
られる冷却水が一方の分岐水路15から入り、各誘導体
10を個別的に冷却後、冷却水は他方の分岐水路15を
通って中心の別の冷部水ダクト13に帰り、このように
して各誘導子10が冷却できるようになっている。この
各誘導子10は支持ロール9に対して非導電物M8を介
して絶縁されると同時に、外部も非導電物質8によりお
おわれて絶縁されている。この非導電物質8はこのよう
に絶縁するほか、圧着時の付加荷重から各誘導子10を
保護するよう構成されていることが必要であり、この点
から、最外層にさらに非磁性合金からなるバイブを焼ば
め等で挿入し、非導電物質を保護することもできる。ま
た、高周波電流回路3bには、圧着ロール6の最下点の
ところに達した誘導子10が接触し、このため、高周波
電流回路3bの先端には摺動型のコンタクト3Cを設け
、この最下点の誘導子1oによってのみ誘導加熱が行な
われる。なお、母材12等に接触する一対のコンタクト
3は回転タイプ又は摺動タイプの何れでも良いが、十分
に冷却される構造のものが好ましい。
Therefore, the cooling water sent from the cooling water duct 13 at the center of the support roll 9 enters from one branch channel 15, and after individually cooling each inductor 10, the cooling water passes through the other branch channel 15 and separates from the center. In this way, each inductor 10 can be cooled. Each inductor 10 is insulated from the support roll 9 via a non-conductive material M8, and at the same time, the outside is also covered and insulated with a non-conductive material 8. In addition to insulating in this way, the non-conductive material 8 must also be configured to protect each inductor 10 from the additional load during crimping, and from this point of view it is necessary that the outermost layer is further made of a non-magnetic alloy. A vibrator can also be inserted by shrink fitting to protect non-conductive materials. Furthermore, the inductor 10 that has reached the lowest point of the pressure roll 6 comes into contact with the high-frequency current circuit 3b, and therefore a sliding contact 3C is provided at the tip of the high-frequency current circuit 3b. Induction heating is performed only by the inductor 1o at the lower point. The pair of contacts 3 that come into contact with the base material 12 and the like may be either a rotating type or a sliding type, but preferably have a structure that allows for sufficient cooling.

また、第2図における誘導子10の外表面から圧着O−
ル6の最表面までの厚みaと、第1図における合材11
の厚みtとの合計(a+t)が母材12中を流れる高周
波電流の合材11の表面への集中度を決定する。
Also, from the outer surface of the inductor 10 in FIG.
Thickness a to the outermost surface of the tile 6 and the composite material 11 in FIG.
The sum (a+t) of .

このため、厚みaの上限は第3図における誘導子10の
巾すの3倍から合材11の厚みtを差し引いた値とする
のが望ましい。
Therefore, it is desirable that the upper limit of the thickness a be set to a value obtained by subtracting the thickness t of the composite material 11 from three times the width of the inductor 10 in FIG.

なお、非導電物質8はセラミックス等の絶縁体から構成
するのが好ましく、なかでも、ジルコニア、アルミナ、
酸化クロム、タングステンカーバイド、クロムカーバイ
ドなどが望ましく、支持ロールの表面へこれらを接合す
る方法としては溶射が最適である。
The non-conductive material 8 is preferably made of an insulator such as ceramics, and among them, zirconia, alumina,
Chromium oxide, tungsten carbide, chromium carbide, etc. are preferable, and thermal spraying is the most suitable method for bonding these to the surface of the support roll.

また、上記の如くクラッドする場合、真空、又は無酸化
雰囲気下で行なうのが好ましく、このようにして合材表
面の酸化を防げば、製造したクラッド鋼は酸洗や研磨の
必要がなく、そのまま使用でき、合材の化学成分に見合
った耐食性を十分に発揮させることができる。
In addition, when cladding as described above, it is preferable to do it in a vacuum or in a non-oxidizing atmosphere.If the surface of the composite material is prevented from oxidizing in this way, the manufactured clad steel does not need pickling or polishing and can be left as is. It can be used to fully exhibit corrosion resistance commensurate with the chemical composition of the composite material.

また、上記の如く一枚のクラッド鋼板を製造する代りに
、第4図に示す如く、複数枚のクラッド鋼板を同時に製
造することもでき、更に、誘導子は第5図に示す如く筒
状のものとして構成することもできる。
Furthermore, instead of manufacturing one clad steel plate as described above, multiple clad steel plates can be manufactured at the same time as shown in Fig. It can also be configured as

すなわち、第4図は本発明により2枚のクラッド鋼板を
同時に製造する場合の説明図である。
That is, FIG. 4 is an explanatory diagram when two clad steel plates are manufactured simultaneously according to the present invention.

この場合は、互いに接合される合材11と母材12は絶
縁1116を介して重ね合わされ、上下に上記構成の圧
着O−ル6が配設され、各組の母材12にコンタクト3
が接触され、高周波電流が通電される。また、第5図は
圧着ロールに一つの誘導子を設けた例の説明図であって
、この場合は、誘導子17は筒状に構成し、この筒状誘
導子17を支持ロール7の外周に非導電物質8を介して
取付ける。
In this case, the composite material 11 and the base material 12 to be joined to each other are overlapped with the insulation 1116 in between, and the crimping O-rules 6 having the above structure are provided above and below, and the contacts 3 are attached to the base material 12 of each set.
is contacted and a high frequency current is applied. FIG. 5 is an explanatory diagram of an example in which a pressure roll is provided with one inductor. through a non-conductive material 8.

実施例 まず、第1図に示す様に、本発明方法によって母材(3
841)と合材(SUS 304)のクラッド鋼板を製
造した。すなわち、10tx1000wx2000j(
m)の母材(SS 41、表面はショット面)の上に3
t X 1000w X 20001 (F)合材(S
US 304、熱延鋼板で表面はショット面)を重ね合
わせ、誘導子と母材との間に340にHz、300にW
の高周波電流を印加して、母材の合材との接触表面直下
を溶融又は半溶融状態まで加熱し圧着した。こごで用い
た圧着ロールは第2図に示す形状で、鋼製の支持ロール
の直径は750m+である。各誘導子の巾(第3図のb
)は8閣とし、合計280本配置した。非導電物質とし
てアルミナを溶射し、第2図のaの値は5■とした。送
りロールによる板の送り速度は48−7分とした。
Example First, as shown in Fig. 1, a base material (3
841) and a composite material (SUS 304) were manufactured. That is, 10tx1000wx2000j (
3 on the base material (SS 41, surface is shot surface) of
t X 1000w X 20001 (F) Composite material (S
US 304, hot-rolled steel plates (with shot surfaces) are superimposed, and 340 Hz and 300 W are applied between the inductor and the base metal.
A high frequency current was applied to heat the base material directly below the contact surface with the composite material to a molten or semi-molten state, and the base material was crimped. The pressure roll used in this case had the shape shown in FIG. 2, and the diameter of the steel support roll was 750 m+. Width of each inductor (b in Figure 3)
) were arranged in 8 pavilions, with a total of 280. Alumina was sprayed as a non-conductive material, and the value of a in FIG. 2 was set to 5. The feeding speed of the plate by the feed roll was 48-7 minutes.

このように製造したクラッド鋼板の合材の剥離強度をJ
IS G 0601で定められた方法で測定したところ
、せん断強度27.4ka/a2を示した。
The peel strength of the composite material of the clad steel plate manufactured in this way is J
When measured by the method specified in IS G 0601, it showed a shear strength of 27.4 ka/a2.

この値は、JIS G 3601で定められたステンレ
ス鋼のクラッド鋼板のせん断強度20kg/a2以上を
十分みたしているものである。
This value sufficiently satisfies the shear strength of 20 kg/a2 or more of a stainless steel clad steel plate defined in JIS G 3601.

更に、超音波探傷試験にて接合状態を調査したところ、
非接合部の最大長さは3m、1ケの非接合部の最大面積
は1.1iであり、更に、非接合部の全面積はクラッド
鋼板の全面積(巾1+a、長さ2’m )の0.15%
であり、JIS G 3601の基準を十分みたしてい
ることがわかった。
Furthermore, when we investigated the bonding condition using an ultrasonic flaw detection test, we found that
The maximum length of a non-joint part is 3m, the maximum area of one non-joint part is 1.1i, and the total area of a non-joint part is the total area of the clad steel plate (width 1+a, length 2'm). 0.15% of
It was found that it fully satisfies the standards of JIS G 3601.

〈発明の効果〉 以上詳しく説明した通り、本発明は誘導子を用いた高周
波通電加熱と誘導加熱とによって母材の合材接触面を局
部的に加熱すると同時に、加圧してクラッドする方法で
あって、従来例のクラッド法の如き工程のはん雑性がな
く、合材がオーステナイト系ステンレス鋼であっても、
その耐食性が十分に発揮できる。
<Effects of the Invention> As explained in detail above, the present invention is a method of locally heating the contact surface of a composite material of a base material by high-frequency current heating using an inductor and induction heating, and at the same time pressurizing and cladding. Therefore, there is no process complexity like the conventional cladding method, and even if the composite material is austenitic stainless steel,
Its corrosion resistance can be fully demonstrated.

また、本発明では、各誘導子は圧着ロールに一体に組込
まれており、上記の如き加熱とともに圧着が容易にでき
る。
Further, in the present invention, each inductor is integrally incorporated in the pressure roll, so that heating and pressure bonding as described above can be easily performed.

なお、上記の如く、クラッド鋼を作る場合、使用する高
周波電源は周波数が200〜400にHzが最適である
In addition, as mentioned above, when making clad steel, the frequency of the high frequency power source to be used is optimally 200-400 Hz.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明方法によって誘導子を用いた高周波通電
する装置の一例の説明図、第2図はその誘導子を具えた
圧着用ロールの正面図、第3図はその誘導子の一例の斜
視図、第4図は一度に2枚のクラッド鋼板を製造する方
法の説明図、第5図は単一誘導子からなる圧着ロールの
正面図、第6図(a)は高周波通電加熱の原理図、(b
)は高周波通電加熱のA−A線上の断面図である。 符号1・・・・・・誘導子    2・・・・・・被加
熱物体3・・・・・・コンタクト  4・・・・・・高
周波電流5・・・・・・加熱部分 6・・・・・・誘導子兼圧着用ロール 7・・・・・・送りロール 8・・・・・・非導電物質 9・・・・・・鋼製支持ロール 10・・・・・・誘導子 −11・・・・・・合材12
・・・・・・母材     13・・・・・・冷却水ダ
クト14・・・・・・誘導子冷却水通路 15・・・・・・分岐水路   16・・・・・・絶縁
物質17・・・・・・筒状誘導子 @1図 112図 1!3図 @4図 【計〜3   −712 にp 3      .712 @5図 @6図(a) 116図(し)
Fig. 1 is an explanatory diagram of an example of a device for applying high frequency current using an inductor according to the method of the present invention, Fig. 2 is a front view of a crimping roll equipped with the inductor, and Fig. 3 is an illustration of an example of the inductor. A perspective view, Fig. 4 is an explanatory diagram of a method for manufacturing two clad steel plates at once, Fig. 5 is a front view of a pressure roll made of a single inductor, and Fig. 6 (a) is the principle of high-frequency electrical heating. Figure, (b
) is a cross-sectional view taken along line A-A of high-frequency electrical heating. Code 1...Inductor 2...Heated object 3...Contact 4...High frequency current 5...Heating part 6... ... Inductor/crimping roll 7 ... Feed roll 8 ... Non-conductive material 9 ... Steel support roll 10 ... Inductor -11・・・・・・Mixture material 12
...Base material 13 ... Cooling water duct 14 ... Inductor cooling water passage 15 ... Branch waterway 16 ... Insulating material 17・・・・・・Cylindrical inductor @1 figure 112 figure 1!3 figure @4 figure [Total~3 -712 p 3. 712 @ Figure 5 @ Figure 6 (a) Figure 116 (shi)

Claims (1)

【特許請求の範囲】 1)接合されるべき母材と合材を重ね合わせ、この重ね
合わせ面を加圧しかつ高周波通電加熱するとともに誘導
子により誘導加熱して接合することを特徴とするクラッ
ド鋼の製造方法。 2)重ね合わされた母材と合材のうちで母材に高周波電
流を通電して加熱すると共に、誘導子により誘導加熱し
、これら加熱と同時に圧着ロールにより加圧して接合す
るクラッド鋼の製造装置において、この圧着ロールの支
持ロールの円周面に沿つて非導電物質を介して前記誘導
子を配設し、前記誘導子の外周は非導電物質でおおって
なることを特徴とするクラッド鋼の製造装置。
[Claims] 1) A clad steel characterized in that a base material and a composite material to be joined are overlapped, the overlapping surfaces are pressurized, heated by high frequency current, and induction heated with an inductor to join them. manufacturing method. 2) Clad steel manufacturing equipment that heats the base material of the stacked base material and composite material by passing a high-frequency current through it, performs induction heating using an inductor, and simultaneously pressurizes and joins the base material with a pressure roll. The inductor is disposed along the circumferential surface of the support roll of the pressure roll through a non-conductive material, and the outer periphery of the inductor is covered with the non-conductive material. Manufacturing equipment.
JP26931284A 1984-12-19 1984-12-19 Method and device for producing clad steel Pending JPS61147979A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26931284A JPS61147979A (en) 1984-12-19 1984-12-19 Method and device for producing clad steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26931284A JPS61147979A (en) 1984-12-19 1984-12-19 Method and device for producing clad steel

Publications (1)

Publication Number Publication Date
JPS61147979A true JPS61147979A (en) 1986-07-05

Family

ID=17470586

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26931284A Pending JPS61147979A (en) 1984-12-19 1984-12-19 Method and device for producing clad steel

Country Status (1)

Country Link
JP (1) JPS61147979A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63138986U (en) * 1987-02-27 1988-09-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63138986U (en) * 1987-02-27 1988-09-13
JPH054951Y2 (en) * 1987-02-27 1993-02-08

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