JPH0371958B2 - - Google Patents
Info
- Publication number
- JPH0371958B2 JPH0371958B2 JP60072381A JP7238185A JPH0371958B2 JP H0371958 B2 JPH0371958 B2 JP H0371958B2 JP 60072381 A JP60072381 A JP 60072381A JP 7238185 A JP7238185 A JP 7238185A JP H0371958 B2 JPH0371958 B2 JP H0371958B2
- Authority
- JP
- Japan
- Prior art keywords
- covering
- base
- laminate
- base material
- covering material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 208
- 238000003466 welding Methods 0.000 claims description 33
- 239000002648 laminated material Substances 0.000 claims description 23
- 238000005253 cladding Methods 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 230000013011 mating Effects 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 8
- 238000005098 hot rolling Methods 0.000 claims description 6
- 238000005304 joining Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims 1
- 238000005096 rolling process Methods 0.000 description 18
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000010953 base metal Substances 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910010413 TiO 2 Inorganic materials 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 229910000601 superalloy Inorganic materials 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000003496 welding fume Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/04—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a rolling mill
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Description
（産業上の利用分野）
本発明はクラツド材を圧延により製造する方
法、特にクラツド用素材の組立加工、圧延そして
仕上加工に関するものである。
（従来の技術）
従来技術としての特開昭55−100890号公報、同
55−128390号公報、同56−122681号公報、同57−
109587号公報に記載されたクラツド材の製造方法
はいづれもサンドイツチ状に母材、合せ材、合せ
材、母材の順あるいは覆い材、合せ材、母材の順
に重ね合せているが、分離剤と接合予定面が同一
空間内にあり、分離剤が接合予定面を汚染する可
能性が大きい。又特開昭57−115991号公報記載の
方法は合せ材と合せ材間に分離剤を密封溶接して
いるが、圧延力によつて該溶接部が破壊した場合
に、分離剤が接合予定面と同一空間に包含される
ことになるため、同様に分離剤が接合予定面を汚
染する可能性が大きく、特開昭57−154387号公報
記載の方法は冷間圧延によつて空気抜き穴から残
存空気を押し出した後、空気抜き孔を溶接する
が、冷間圧延工程が追加されるため製造費用上昇
の可能性が大きい。
（発明が解決しようとする問題点）
本発明は接合強度が強くかつ圧延中および圧延
後に反りの小さいクラツド鋼の製造法を提供する
ことを目的とする。
（問題点を解決するための手段）
本発明の要旨とするところは下記のとおりであ
る。
(1) 母材、合せ材および覆い材を、その合せ面を
清浄にして層状に重ね、合せ材が存在する空間
から接合の阻害要因となる成分を排除し、前記
母材と覆い材とをその周囲で溶接して合せ材を
母材と覆い材間に密封、固定して層状組立材と
し、該層状組立材に反り防止部材を重ねてその
周囲を溶接、固定して圧延素材とし、これを熱
間圧延して母材と合せ材、合せ材と覆い材とを
接合した後前記覆い材を除去することを特徴と
する圧延クラツド材の製造法。
(2) 母材、合せ材および覆い材を、その合せ面を
清浄にして層状に重ね、合せ材が存在する空間
から接合の阻害要因となる成分を排除し、前記
母材と覆い材とをその周囲で溶接して合せ材を
母材と覆い材間に密封、固定して層状組立材と
し、該層状組立材２箇のそれぞれの覆い材を面
接する如く重ね、前記母材相互をその周囲で溶
接して母材を反り防止部材として機能せしめる
圧延素材としこれを熱間圧延して母材と合せ
材、合せ材と覆い材とを接合した後、前記覆い
材を除去することを特徴とする圧延クラツド材
の製造法。
(3) 母材と覆い材とをその周囲で溶接するに際
し、母材と覆い材間に不活性ガスを吹込むとと
もに、該溶接完了後、覆い材表面を100℃以上
の温度に維持しかつ母材と覆い材間を10-1torr
以下に減圧し、これを母材と反り防止材或は母
材相互をその周囲で溶接して圧延素材とする該
溶接が完了するまで維持する前記第１項または
第２項の何れかに記載の圧延クラツド材の製造
法。
(4) 覆い材が鋼材であり、これと接する反り防止
材または覆い材も鋼材であるとき、これらの接
する面の少なくとも一方に厚さ30μｍ以上の酸
化層を存在せしめること、またはAl2O3、
SiO2、TiO2、Cr2O3、Fe2O3、Fe3O4のいづれ
か一つ以上を主成分とする粉末を樹脂をビヒク
ルとして厚さ10μｍ以上に塗布すること、そし
て該酸化層面あるいは塗布面は外気と通じてい
ること、そして分離予定面の両側の金属の加工
硬化温度域で少なくとも１往復以上のレベラー
矯正を行なう前記第１項〜第３項の何れかに記
載の圧延クラツド材の製造法。
(5) 母材と覆い材が炭素鋼であり、合せ材がステ
ンレス鋼、鉄基超合金、ニツケル基超合金、チ
タンまたはその合金、アルミまたはその合金、
銅またはその合金である前記第１項〜第４項の
何れかに記載の圧延クラツド材の製造法。
(6) 合せ材が複層である前記第５項記載の圧延ク
ラツド材の製造法。
（発明の作用）
本発明の基本となる構成要件とその作用は次の
ように整理できる。
(1) 本発明では母材と合せ材と覆い材とを層状に
重ねて母材と覆い材の周囲を溶接して合せ材を
両者間に密封固定する。この要件によつて接合
予定面と分離予定面を別空間に完全に分離し
て、素材溶接加工中、搬送中、加熱中、圧延加
工中の全加工工程を通じて、分離剤や酸化物あ
るいは接合阻害成分を含むガスなどによる接合
予定面の汚染を防止することができる。さらに
覆い材によつて合せ材を母材に固定し、覆い材
もまた周囲を強固に母材に溶接固定することに
よつて、加工工程中の合せ材の変位、覆い材の
破断、そしてそれらの不均一変形による合せ材
寸法精度の悪化を防止できる。このような効果
を最大限に得るために、本発明に用いる覆い材
と合せ材の接触面もまた接合を目的として十分
清浄に保ち、合せ材の存在する空間からは接合
の阻害となる成分を工業的に可能な限り排除す
る。こうすることによつて合せ材の両面を完全
に接合させ、十分に拘束しながら圧延すること
によつて反りを防止するとともに変形を均一化
させることができる。
(2) 母材と合せ材と覆い材とを互に接合する程度
にその合せ面を清浄にして層状に重ね、前述(1)
のように組立てた層状組立材の覆い材に反り防
止材を重ねて、該反り防止材と母材の周囲を溶
接して圧延素材を組立てること、またはほぼ同
寸法の２個の層状組立材の覆い材面を合わせて
両母材の周囲を溶接して圧延素材を組立てるこ
とである。この要件によつて加熱中、圧延中、
冷却中あるいは熱処理中の反りとそれにともな
う運転トラブルを防止できるのみならず、無理
な曲げおよび曲げもどしを生じず、均一な加工
を行なうことができ、寸法精度の優れた接合強
度の強いクラツド材を得ることができる。反り
防止材は分離予定面に対して母材側と類似の材
質・寸法であることが望ましいが、工業的には
冷却速度の差を利用することによつて反り防止
材の厚さを母材と同材質の場合に母材厚さの30
％程度の厚さまで薄くすることができる。反り
防止材を母材厚さより厚くすることはコストア
ツプとなり好ましくない。反り防止材の代りに
ほぼ同寸法の層状組立材の対を覆い材面で合せ
て母材同志を溶接するのが最も望ましく、この
場合には２枚のクラツド鋼が同時に得られる。
本発明の周辺技術の構成とその作用は次のよ
うに整理できる。
(3) 母材と合せ材と覆い材とをその合せ面を清浄
にして層状に重ね、母材と覆い材の周囲を溶接
するに際し、母材と覆い材間にアルゴン、ヘリ
ウムなどの不活性ガスを吹込みながら母材と覆
い材を密閉溶接することによつて、溶接スパツ
タ、溶接ヒユーム、あるいは溶接熱による内部
汚染を防止する。そして、密閉溶接完了後には
母材より薄い覆い材表面の100℃以上に加熱し
ながら、母材と覆い材間を10-1torr以下に減圧
して、母材と覆い材間の水分、気化性接合阻害
成分を吸引除去する。この際の加熱温度は水の
沸点以上とし効果的に水分を除去することが必
要であるが、圧延温度より高くする必要はな
い。そしてさらに母材と反り防止材または母材
と他の母材の周囲の溶接が完了するまで、溶接
熱を利用して10-1torr以下に減圧し続けること
によつて経済的にかつ、効率的に接合阻害成分
ガスを吸引除去する。
(4) 覆い材の合せ材との反対面は熱間圧延後に容
易に分離できることが望ましい。その分離のた
めに、覆い材が鋼材であり、これと接する覆い
材または反り防止材が鋼材であるとき、これら
の接する面の少なくとも一方に厚さ30μｍ以上
の酸化層を存在せしめること、またはAl2O3、
SiO2、TiO2、Cr2O3、Fe2O3、Fe3O4のいづれ
か一つ以上を主成分とする粉末を樹脂をビヒク
ルとして厚さ10μｍ以上に塗布する。樹脂をビ
ヒクルとする理由は安価で塗装性が優れている
からであるが、これは加熱中に多量のガスを発
生するので、分離予定面は外気と通じこのガス
を排することが望ましい。分離予定面の両側の
金属の加工硬化温度域で少なくとも１往復以上
のレベラー矯正を行ない、分離予定面の破壊を
促進する。分離予定面の破壊は進行方向の後方
へ向つて拡大しながら進むため破壊を全面に拡
大させるには少なくとも１往復のレベラー矯正
が必要である。
次に本発明に用いる素材の組立方法とその構造
について説明する。第１図に、この発明を実施す
るときの途中までの過程を示す。第１図に示す態
様では母材１に合せ材２を重ね、あらかじめ合せ
材を収容するように周囲に溶接加工した覆い材３
をこれに重ね、該覆い材３を母材１にすみ肉溶接
８で固定している。このすみ肉溶接の際にはノズ
ル９または９′よりアルゴン又はヘリウムなどの
不活性ガスを吹込む。合せ材が活性金属でない場
合には安価な窒素や炭酸ガスでアルゴンまたはヘ
リウムといつた不活性ガスの代替が可能である。
第２図に示すのは覆い材の端部を曲げてその端部
を母材にすみ肉溶接した場合であり、その他は第
１図と同じである。その後、この層状組立材に、
反り防止材をその周囲で溶接固定するに際しては
ノズル９′がある場合には９′を閉鎖し、覆い材３
の表面１１を100℃以上に加熱し、ノズル９から
10-1torr以下に減圧するのが望ましい。
第３図に、第１図の組立材に反り防止材４を合
わせて母材との間１２を溶接する過程を示す。こ
の溶接の間、溶接熱を利用してノズル９から
10-1torr以下に減圧しつづけることが望ましい。
このようにして得られる圧延素材を、所定温度に
加熱して熱間圧延し、次いで圧延後の材料を切断
し、反り防止材４を分離する。
続いて、覆い材３を切削若しくは研削または酸
洗によつて除去し、合せ材２表面を露出せしめて
クラツド材を得る。第４図に示す、本発明の実施
態様では第１図の２個の組立材を覆い材表面１１
の少なくとも一方に30μｍ以上の酸化層をあらか
じめ生成させておくか、あるいはAl2O3、SiO2、
TiO2、Cr2O3、Fe2O3、Fe3O4のいづれか一つ以
上を主成分とする粉末を樹脂をビヒクルとして厚
さ10μｍ以上に塗布乾燥し、該覆い材表面１１で
両者に合わせて、母材１と母材７間１２を溶接し
たものであり、溶接中にはノズル９，１０より
10-1torr以下に減圧することが望ましい。この第
４図に示す態様では、相互の母材１，７が反り防
止材として機能する。第５図は第２図の組立素材
を用いることと、デイスタントピース１３を覆い
材間に挿入し、溶接によつて覆い材が破損するの
を防いでいる以外は第４図と同じである。これら
第３図、第４図または第５図の圧延用素材は、ノ
ズル９を、10-1torr以下に減圧した状態で鍛接ま
たは溶接により閉鎖し、加熱したのち熱間圧延す
る。
熱間圧延後、材料を切断し、覆い材面間で分離
し、次いで覆い材を、切削若しくは研削または酸
洗により除去し、合せ材を露出せしめて２ピース
の圧延クラツド材を得る。
（実施例）
表１に実施例を示す。いづれも合せ材以外は
0.17％炭素鋼を用い、素材組立寸法を幅150mm、
長さ200mmの小試験片であるが、これで生産圧延
用の圧延状況を十分評価できる。すべての試験片
はミグ溶接法で溶接し、溶接中の溶接汚染を防ぐ
ためにアルゴンガスを内部に吹込んでおり、溶接
完了後、内部を10-2torrに減圧している。
従来法の例１では厚さ20mmの鋼母材に厚さ６mm
のステンレス鋼を溶接している。この例では圧延
中にステンレス鋼側へ大きく反り、冷却後には反
りは増大し、合せ材の厚さ偏差（＝最大厚さ−最
小厚さ）は0.33mmと大きい。せん断強さは低目で
あり、側曲げ試験結果も悪い。従来法の例２では
第５図で覆い材３，５を有しない構造であるが、
せん断強さが低く、側曲げ試験結果も悪い。
本発明法の例３ないし例７では第３図ないし第
５図の構造であり、反りを顕著にするために非対
称の構造としているが、圧延中および冷却後の反
りは十分許容できる範囲にある。さらに合せ材厚
さ偏差、母材と合せ材のせん断強さ、側曲げ試験
結果ともに良好である。分離剤は例５では覆い材
の表面１１の片面にあらかじめ35μｍの酸化スケ
ールを生成せしめた鋼板を用い、他の例では
Al2O3、TiO2、Cr2O3をそれぞれ主成分とする粉
末をシリコン樹脂をビヒクルとして10μｍ以上に
塗布乾燥しており、圧延後に容易に分離してい
る。合せ材と覆い材は圧延後に接合しており、グ
ラインダーにより研削除去した。
(Industrial Field of Application) The present invention relates to a method of manufacturing a cladding material by rolling, and in particular to assembly, rolling, and finishing of the cladding material. (Prior art) Japanese Patent Application Laid-Open No. 55-100890 and the same
No. 55-128390, No. 56-122681, No. 57-
In all of the methods for manufacturing clad materials described in Publication No. 109587, layers are layered in the order of base material, laminate material, laminate material, and base material in a sandwich pattern, or in the order of covering material, laminate material, and base material. and the surface to be joined are in the same space, and there is a high possibility that the separation agent will contaminate the surface to be joined. Furthermore, in the method described in JP-A No. 57-115991, a separator is hermetically welded between the laminates, but if the welded part breaks due to rolling force, the separator will leak onto the surfaces to be joined. Since the separation agent is contained in the same space as the air release hole, there is a high possibility that the separating agent will contaminate the surface to be joined. After pushing out the air, the air vent hole is welded, but since a cold rolling process is added, there is a high possibility that manufacturing costs will increase. (Problems to be Solved by the Invention) An object of the present invention is to provide a method for manufacturing clad steel that has strong joint strength and has small warpage during and after rolling. (Means for solving the problems) The gist of the present invention is as follows. (1) Layer the base material, cladding material, and covering material in a layered manner with their mating surfaces clean, remove components that would inhibit bonding from the space where the laminate materials exist, and remove the base material and covering material. The laminate material is sealed and fixed between the base material and the cover material by welding around it to form a layered assembled material, and a warp prevention member is stacked on the layered assembled material and the periphery is welded and fixed to form a rolled material. 1. A method for producing a rolled clad material, which comprises hot rolling a base material and a cladding material, joining a cladding material and a covering material, and then removing the covering material. (2) Layer the base material, cladding material, and covering material in a layered manner with their mating surfaces clean, remove components that would inhibit bonding from the space where the laminate materials exist, and remove the base material and covering material. By welding around the periphery, the laminate is sealed and fixed between the base material and the covering material to form a layered assembly material, and the covering materials of the two layered assembly materials are overlapped so as to face each other, and the base materials are wrapped around each other. The rolling material is welded to make the base material function as a warpage prevention member, and after hot rolling the base material and the laminate material and the laminate material and the covering material, the covering material is removed. A manufacturing method for rolled clad material. (3) When welding the base material and the covering material around them, inert gas is blown between the base material and the covering material, and after welding is completed, the surface of the covering material is maintained at a temperature of 100°C or higher. 10 -1 torr between base material and covering material
According to either of the above items 1 or 2, the pressure is reduced to below, and this is maintained until the base material and the anti-warp material or the base materials are welded around each other to form a rolled material until the welding is completed. Method of manufacturing rolled cladding material. (4) When the covering material is a steel material and the anti-warping material or covering material in contact with it is also a steel material, an oxidized layer with a thickness of 30 μm or more must be present on at least one of the surfaces in contact with it, or Al 2 O 3 ,
A powder containing one or more of SiO 2 , TiO 2 , Cr 2 O 3 , Fe 2 O 3 , and Fe 3 O 4 as a main component is applied to a thickness of 10 μm or more using a resin as a vehicle, and the oxidized layer surface or The rolled cladding material according to any one of items 1 to 3 above, wherein the coated surface communicates with the outside air, and the leveling is performed at least once or more in the work hardening temperature range of the metal on both sides of the surface to be separated. manufacturing method. (5) The base material and covering material are carbon steel, and the mating material is stainless steel, iron-based superalloy, nickel-based superalloy, titanium or its alloy, aluminum or its alloy,
The method for producing a rolled cladding material according to any one of items 1 to 4 above, which is made of copper or an alloy thereof. (6) The method for producing a rolled cladding material according to item 5 above, wherein the laminated material is a multi-layered material. (Operation of the invention) The basic constituent elements of the present invention and their operation can be summarized as follows. (1) In the present invention, the base material, the cladding material, and the covering material are stacked in layers, and the peripheries of the base material and the covering material are welded to seal and fix the laminate material between them. Due to this requirement, the surfaces to be joined and the surfaces to be separated are completely separated into separate spaces, and separation agents, oxides, and bonding impediments can be removed throughout the entire processing process, including material welding, transportation, heating, and rolling. It is possible to prevent contamination of the surface to be joined by gas containing components. Furthermore, by fixing the cladding material to the base material using the covering material, and by firmly welding and fixing the periphery of the covering material to the base material, it is possible to prevent displacement of the laminate material, breakage of the covering material, and other problems during the processing process. It is possible to prevent deterioration of the dimensional accuracy of the laminate due to non-uniform deformation. In order to maximize this effect, the contact surface between the covering material and the laminate used in the present invention is also kept sufficiently clean for the purpose of bonding, and the space where the laminate is present is free of components that may inhibit bonding. Eliminate as much as industrially possible. By doing this, both sides of the laminate are completely joined, and by rolling with sufficient restraint, warping can be prevented and deformation can be made uniform. (2) Clean the mating surfaces of the base material, cladding material, and covering material to the extent that they are mutually bonded, and stack them in layers, as described in (1) above.
Assemble the rolled material by overlaying the warping prevention material on the covering material of the layered assembled materials assembled as described above, and welding the warpage prevention material and the periphery of the base material, or by combining two layered materials of approximately the same size. This involves assembling the rolled material by aligning the covering material surfaces and welding the circumferences of both base materials. Due to this requirement, during heating, rolling,
It not only prevents warping during cooling or heat treatment and the associated operational troubles, but also enables uniform processing without excessive bending or unbending, and produces clad materials with excellent dimensional accuracy and strong joint strength. Obtainable. It is desirable that the anti-warp material has similar material and dimensions to the base material side with respect to the surface to be separated, but industrially it is possible to adjust the thickness of the anti-warp material to the base material by utilizing the difference in cooling rate. 30 of the base material thickness in the case of the same material as
It can be made as thin as 30%. It is not preferable to make the anti-warp material thicker than the base material because it increases costs. Instead of the anti-warpage material, it is most preferable to weld the base materials together by matching a pair of laminar assemblies of approximately the same size at the surfaces of the covering materials, in which case two clad steel sheets are obtained at the same time. The configuration and operation of the peripheral technology of the present invention can be summarized as follows. (3) When stacking the base material, cladding material, and covering material in layers after cleaning their mating surfaces, and welding the periphery of the base material and covering material, apply an inert gas such as argon or helium between the base material and the covering material. By hermetically welding the base material and cover material while blowing gas, internal contamination due to welding spatter, welding fume, or welding heat is prevented. After the hermetic welding is completed, the surface of the covering material, which is thinner than the base metal, is heated to over 100°C, while the pressure between the base metal and the covering material is reduced to 10 -1 torr or less, and moisture and vaporization between the base metal and the covering material is removed. The sexual mating inhibiting component is removed by suction. The heating temperature at this time needs to be higher than the boiling point of water to effectively remove water, but it does not need to be higher than the rolling temperature. Furthermore, welding heat can be used to continue reducing the pressure to 10 -1 torr or less until the welding of the base metal and anti-warp material or the base metal and other base metals is completed, making it economical and efficient. The bonding-inhibiting component gas is removed by suction. (4) It is desirable that the opposite side of the covering material from the laminate material can be easily separated after hot rolling. For this separation, when the covering material is made of steel and the covering material or anti-warp material in contact with it is made of steel, an oxide layer with a thickness of 30 μm or more must be present on at least one of the surfaces in contact with the covering material, or Al 2O3 ,
A powder containing one or more of SiO 2 , TiO 2 , Cr 2 O 3 , Fe 2 O 3 , and Fe 3 O 4 as a main component is applied to a thickness of 10 μm or more using a resin as a vehicle. The reason why a resin is used as a vehicle is that it is inexpensive and has excellent paintability, but since it generates a large amount of gas during heating, it is desirable that the surface to be separated communicates with the outside air to exhaust this gas. Leveler correction is performed at least once or more in the work-hardening temperature range of the metal on both sides of the surface to be separated to promote destruction of the surface to be separated. Since the destruction of the planned separation surface progresses while expanding toward the rear in the direction of movement, at least one reciprocating leveler correction is required to spread the destruction over the entire surface. Next, a method of assembling the materials used in the present invention and its structure will be explained. FIG. 1 shows the process up to the middle of implementing this invention. In the embodiment shown in FIG. 1, a laminate material 2 is stacked on a base material 1, and a covering material 3 is welded around the periphery in advance to accommodate the laminate material.
is superimposed on this, and the covering material 3 is fixed to the base material 1 by fillet welding 8. During this fillet welding, an inert gas such as argon or helium is blown through the nozzle 9 or 9'. If the bonding material is not an active metal, inexpensive nitrogen or carbon dioxide gas can be substituted for an inert gas such as argon or helium.
FIG. 2 shows a case in which the end of the covering material is bent and fillet welded to the base material, and the rest is the same as FIG. 1. Then, to this layered assembly material,
When welding and fixing the anti-warping material around it, close the nozzle 9' if there is one, and close the nozzle 9' and close the covering material 3.
Heat the surface 11 of the
It is desirable to reduce the pressure to 10 -1 torr or less. FIG. 3 shows the process of fitting the anti-warping material 4 to the assembled material of FIG. 1 and welding the gap 12 to the base material. During this welding, welding heat is used to
It is desirable to continue reducing the pressure to 10 -1 torr or less.
The rolled material thus obtained is heated to a predetermined temperature and hot rolled, and then the rolled material is cut to separate the anti-warp material 4. Subsequently, the covering material 3 is removed by cutting, grinding, or pickling to expose the surface of the laminate material 2 to obtain a cladding material. In the embodiment of the invention shown in FIG. 4, the two assemblies of FIG.
Either an oxide layer of 30 μm or more is formed in advance on at least one of Al 2 O 3 , SiO 2 ,
Powder containing one or more of TiO 2 , Cr 2 O 3 , Fe 2 O 3 , and Fe 3 O 4 as a main component is applied to a thickness of 10 μm or more using a resin as a vehicle, dried, and coated on both sides on the surface 11 of the covering material. In addition, welding is performed between base metal 1 and base metal 7, and during welding, nozzles 9 and 10
It is desirable to reduce the pressure to 10 -1 torr or less. In the embodiment shown in FIG. 4, the mutual base materials 1 and 7 function as warpage prevention materials. Figure 5 is the same as Figure 4 except that the assembly materials shown in Figure 2 are used and the distant piece 13 is inserted between the covering materials to prevent the covering materials from being damaged by welding. . The rolling materials shown in FIG. 3, FIG. 4, or FIG. 5 are hot-rolled after the nozzle 9 is closed by forge welding or welding under a reduced pressure of 10 -1 torr or less, heated, and then hot rolled. After hot rolling, the material is cut and separated between the faces of the shroud, and then the shroud is removed by cutting or grinding or pickling to expose the cladding material to obtain a two-piece rolled cladding material. (Example) Table 1 shows examples. All except for the laminated materials
Using 0.17% carbon steel, the material assembly dimensions are 150mm wide,
Although it is a small test piece with a length of 200 mm, it is sufficient to evaluate the rolling conditions for production rolling. All test pieces were welded using the MIG welding method, argon gas was blown into the interior to prevent weld contamination during welding, and the interior was depressurized to 10 -2 torr after welding was completed. In example 1 of the conventional method, a 6 mm thick steel base material is used for a 20 mm thick steel base material.
Welded stainless steel. In this example, there was a large warpage toward the stainless steel side during rolling, and the warpage increased after cooling, and the thickness deviation of the laminate (=maximum thickness - minimum thickness) was as large as 0.33 mm. The shear strength is low, and the side bending test results are also poor. In example 2 of the conventional method, the structure shown in FIG. 5 does not have the covering materials 3 and 5,
Shear strength is low and side bending test results are also poor. Examples 3 to 7 of the method of the present invention have the structures shown in Figures 3 to 5, and are asymmetrical structures to make warpage more noticeable, but the warpage during rolling and after cooling is within a sufficiently tolerable range. . Furthermore, the thickness deviation of the laminate, the shear strength of the base material and the laminate, and the side bending test results are all good. In Example 5, a steel plate with a 35 μm oxide scale formed on one side of the covering material surface 11 was used as the separating agent, and in other examples, a steel plate was used as the separating agent.
Powders containing Al 2 O 3 , TiO 2 , and Cr 2 O 3 as main components are coated and dried to a thickness of 10 μm or more using silicone resin as a vehicle, and are easily separated after rolling. The cladding material and the covering material were joined after rolling, and were removed by grinding with a grinder.
【表】【table】
【表】
（発明の効果）
本発明によれば寸法精度の優れた接合強度の強
いクラツド材を製造することができる。しかして
本発明は母材と覆い材が炭素鋼であり、合せ材が
ステンレス鋼、鉄基超合金、ニツケル基超合金、
チタンまたはその合金、アルミニウムまたはその
合金、鋼またはその合金などである圧延クラツド
材の製造法のほか、覆い材と母材の溶接が可能な
金属の組合せであればあらゆる金属の熱間あるい
は冷間圧延クラツド材の製造法として応用できる
ものである。[Table] (Effects of the Invention) According to the present invention, a clad material with excellent dimensional accuracy and strong bonding strength can be manufactured. However, in the present invention, the base material and the covering material are carbon steel, and the bonding material is stainless steel, iron-based superalloy, nickel-based superalloy,
In addition to the manufacturing method of rolled clad materials such as titanium or its alloys, aluminum or its alloys, steel or its alloys, hot or cold welding of any metal combination that allows welding of the covering material and the base material. This method can be applied as a manufacturing method for rolled cladding materials.
第１図および第２図は本発明の圧延用素材組立
の中間段階を示す図、第３図、第４図、第５図は
本発明圧延用素材の組立後の状態を示す図であ
る。
１，７：母材、２，６：合せ材、３，５：覆い
材、４：反り防止材、８：隅肉溶接部、９，９′，
１０：ノズル、１１：覆い材表面、１２：母材相
互間溶接部、１３：デイスタンスピース。
1 and 2 are diagrams showing an intermediate stage of assembling the rolling material of the present invention, and FIGS. 3, 4, and 5 are diagrams showing the state of the rolling material of the present invention after assembly. 1, 7: Base metal, 2, 6: Laminating material, 3, 5: Covering material, 4: Warp prevention material, 8: Fillet weld, 9, 9',
10: Nozzle, 11: Covering material surface, 12: Welded portion between base materials, 13: Distance piece.
Claims (1)
清浄にして層状に重ね、合せ材が存在する空間か
ら接合の阻害要因となる成分を排除し、前記母材
と覆い材とをその周囲で溶接して合せ材を母材と
覆い材間に密封、固定して層状組立材とし、該層
状組立材に反り防止部材を重ねてその周囲を溶
接、固定して圧延素材とし、これを熱間圧延して
母材と合せ材、合せ材と覆い材とを接合した後、
前記覆い材を除去することを特徴とする圧延クラ
ツド材の製造法。 ２ 母材、合せ材および覆い材を、その合せ面を
清浄にして層状に重ね、合せ材が存在する空間か
ら接合の阻害要因となる成分を排除し、前記母材
と覆い材とをその周囲で溶接して合せ材を母材と
覆い材間に密封、固定して層状組立材とし、該層
状組立材２箇のそれぞれの覆い材を面接する如く
重ね、前記母材相互をその周囲で溶接して母材を
反り防止部材として機能せしめる圧延素材とし、
これを熱間圧延して母材と合せ材、合せ材と覆い
材とを接合した後、前記覆い材を除去することを
特徴とする圧延クラツド材の製造法。[Scope of Claims] 1. A base material, a laminate material, and a covering material are stacked in layers with their mating surfaces cleaned, and components that inhibit joining are removed from the space where the laminate materials exist, and the base material and the covering material are stacked in layers. The covering material is welded around the base material and the covering material, and the combined material is sealed and fixed between the base material and the covering material to form a layered assembled material, and the warp prevention member is overlaid on the layered assembled material, the surrounding area is welded and fixed, and then rolled. After hot-rolling the raw material and joining the base material and laminate material, and the laminate material and covering material,
A method for producing a rolled cladding material, which comprises removing the covering material. 2 Layer the base material, cladding material, and covering material in a layered manner with their mating surfaces clean, remove components that would inhibit bonding from the space where the laminate materials exist, and remove the base material and covering material from their surroundings. The laminated material is sealed and fixed between the base material and the covering material by welding to form a layered assembled material, and the covering materials of the two layered assembled materials are overlapped so as to face each other, and the base materials are welded around each other. The base material is made into a rolled material that functions as a warpage prevention member,
A method for manufacturing a rolled clad material, which comprises hot rolling the material to join the base material and the clad material, and the laminate material and the covering material, and then removing the covering material.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7238185A JPS61232075A (en) | 1985-04-05 | 1985-04-05 | Production of rolling clad material |
| CA000505855A CA1266156A (en) | 1985-04-05 | 1986-04-04 | Method for producing a clad plate by hot-rolling |
| DE8686302508T DE3664588D1 (en) | 1985-04-05 | 1986-04-04 | Method for producing a clad plate by hot-rolling |
| EP86302508A EP0201202B2 (en) | 1985-04-05 | 1986-04-04 | Method for producing a clad plate by hot-rolling |
| US07/218,476 US4831708A (en) | 1985-04-05 | 1988-07-06 | Method for producing a clad plate by hot rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7238185A JPS61232075A (en) | 1985-04-05 | 1985-04-05 | Production of rolling clad material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61232075A JPS61232075A (en) | 1986-10-16 |
| JPH0371958B2 true JPH0371958B2 (en) | 1991-11-15 |
Family
ID=13487653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7238185A Granted JPS61232075A (en) | 1985-04-05 | 1985-04-05 | Production of rolling clad material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61232075A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0413487A (en) * | 1990-04-28 | 1992-01-17 | Nippon Steel Corp | Manufacture of stainless steel/aluminum asymmetrical clad |
| CN102274851A (en) * | 2011-04-26 | 2011-12-14 | 宝钛集团有限公司 | Method for manufacturing titanium alloy sheet by cladding and pack rolling of steel plate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57109588A (en) * | 1980-12-27 | 1982-07-08 | Kawasaki Steel Corp | Production of clad steel for structure by vacuum diffusion joining method |
| JPS57160587A (en) * | 1981-03-30 | 1982-10-02 | Mitsubishi Heavy Ind Ltd | Manufacture of rolled clad steel by diffusion welding |
-
1985
- 1985-04-05 JP JP7238185A patent/JPS61232075A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57109588A (en) * | 1980-12-27 | 1982-07-08 | Kawasaki Steel Corp | Production of clad steel for structure by vacuum diffusion joining method |
| JPS57160587A (en) * | 1981-03-30 | 1982-10-02 | Mitsubishi Heavy Ind Ltd | Manufacture of rolled clad steel by diffusion welding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61232075A (en) | 1986-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0201202B2 (en) | Method for producing a clad plate by hot-rolling | |
| US4694985A (en) | Method of producing titanium clad steel plate by hot rolling | |
| JPH04305383A (en) | Manufacture of clad steel material | |
| JPH0371958B2 (en) | ||
| JPS6018205A (en) | Manufacture of titanium-clad steel material | |
| JP2514858B2 (en) | Manufacturing method of clad steel plate | |
| US3667107A (en) | Filler for roll-weld structures | |
| JPH02187282A (en) | Manufacture of cladded plate at both surfaces | |
| JPH0371955B2 (en) | ||
| JPH01154886A (en) | Manufacture of al clad steel plate | |
| JPS63215389A (en) | Manufacture of clad metal plate | |
| JPH0371954B2 (en) | ||
| JPH02295682A (en) | Manufacture of titanium clad steel plate excellent in joinability | |
| JPH0328981B2 (en) | ||
| JPH0371956B2 (en) | ||
| JPH03285781A (en) | Production of both-side clad plate | |
| JPS5915306B2 (en) | Manufacturing method of titanium clad steel using hot rolling method | |
| JPS6293090A (en) | Production of titanium clad steel | |
| JP2823411B2 (en) | Diffusion bonding member manufacturing method | |
| JPS5813241B2 (en) | Manufacturing method of composite metal rod | |
| JPH038587A (en) | Production of stainless steel/al alloy clad material | |
| JPH0669630B2 (en) | Method for producing titanium clad steel sheet using nickel as an intermediate contact material | |
| JPH0424156B2 (en) | ||
| JPS63180387A (en) | Manufacture of thin clad plate | |
| JPH01107985A (en) | Manufacture of clad steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |