JPH04238607A - Method and device for joining hot rolled stock - Google Patents
Method and device for joining hot rolled stockInfo
- Publication number
- JPH04238607A JPH04238607A JP14560491A JP14560491A JPH04238607A JP H04238607 A JPH04238607 A JP H04238607A JP 14560491 A JP14560491 A JP 14560491A JP 14560491 A JP14560491 A JP 14560491A JP H04238607 A JPH04238607 A JP H04238607A
- Authority
- JP
- Japan
- Prior art keywords
- rolled material
- trailing
- joining
- rolled
- rear end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005304 joining Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims description 25
- 238000005098 hot rolling Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 175
- 238000003466 welding Methods 0.000 claims description 48
- 238000005096 rolling process Methods 0.000 claims description 30
- 125000006850 spacer group Chemical group 0.000 claims description 23
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0085—Joining ends of material to continuous strip, bar or sheet
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は熱間連続圧延のため仕上
圧延前に先行圧延材の後端部と後行圧延材の先端部とを
接合するための熱間圧延材の接合方法及び装置に関する
ものである。[Industrial Application Field] The present invention relates to a method and apparatus for joining hot rolled materials for joining the rear end of a preceding rolled material and the leading end of a subsequent rolled material before finish rolling for continuous hot rolling. It is related to.
【０００２】0002
【従来の技術】従来、圧延材を熱間圧延する場合、或る
一定長さの圧延材を一本毎に間欠的に圧延機に供給して
圧延していたが、近年、熱間薄板圧延においても、冷間
圧延の場合と同様に、先後端部の形状不良部の減少によ
る歩留向上や圧延能率向上を図るために連続圧延が行わ
れるようになって来ている。[Prior Art] Conventionally, when hot rolling a rolled material, a certain length of rolled material was intermittently supplied to a rolling mill one by one for rolling. As in the case of cold rolling, continuous rolling has come to be performed in order to improve the yield and rolling efficiency by reducing the number of defective parts at the leading and trailing ends.
【０００３】かかる熱間連続圧延においては、粗圧延機
で圧延された圧延材を連続的に熱間仕上圧延するために
仕上圧延機に送る前に先行圧延材の後端部と後行圧延材
の先端部とを接合して、仕上圧延機で連続圧延を行うよ
うにしており、そのために、上記粗圧延機と仕上圧延機
との間で先行圧延材の後端部と後行圧延材の先端部とを
接合する種々の接合方法が提案されている。In such continuous hot rolling, before the rolled material rolled in the rough rolling mill is sent to the finishing mill for continuous hot finishing rolling, the trailing end of the preceding rolled material and the trailing rolled material are separated. The rear end of the preceding rolled material and the trailing end of the following rolling material are connected between the rough rolling mill and the finishing mill to perform continuous rolling in the finishing mill. Various joining methods have been proposed for joining the tip.
【０００４】既に提案されている熱間圧延材の接合方法
としては、■先行圧延材の後端部と後行圧延材の先端部
に、蟻溝状の切欠部と蟻ほぞ状の突出部を、幅方向に交
互に有するように打抜きにより形成し、先行圧延材の後
端部と後行圧延材の先端部を重ね合わせて嵌合させ、接
合させるようにしたもの（特開昭６１−２３５０２号）
、■先行圧延材の後端部と後行圧延材の先端部とを突き
合わせ、該突き合わせ部を熱間下で複数の溶接手段にて
同時に溶接して接合させるようにしたもの（特開昭６０
−２２３６５７号）、等がある。[0004] Already proposed methods for joining hot-rolled materials include: (1) forming a dovetail-shaped notch and a dovetail-like protrusion at the rear end of the preceding rolled material and the leading end of the trailing rolled material; , which are formed by punching so as to have alternating shapes in the width direction, and the rear end of the leading rolled material and the leading end of the trailing rolled material are overlapped and fitted to join them (Japanese Patent Laid-Open No. 61-23502) issue)
, ■ The rear end of the leading rolled material and the leading end of the trailing rolled material are butted together, and the abutted parts are simultaneously welded and joined using a plurality of welding means under hot conditions.
-223657), etc.
【０００５】[0005]
【発明が解決しようとする課題】ところが、上記従来の
接合方法のうち、■の方法では、仕上圧延前に圧延材の
端部に蟻溝状の切欠部と蟻ほぞ状の突出部を打抜きによ
り形成する場合に板厚が厚いので、打抜き作業が容易で
はないこと、又、■の方法では、圧延材の突き合わせ部
に開先加工が施こされておらず、突き合わせ部の溶接接
合において板厚方向の深層部まで溶接することが困難で
あること、等の問題がある。また、熱間圧延材同志を溶
接しようとすると、付着したスケールによって十分な接
合強度を確保することが難しいという問題がある。However, among the above-mentioned conventional joining methods, in method (2), a dovetail-shaped notch and a dovetail-like protrusion are formed at the end of the rolled material by punching before finish rolling. In addition, in method (2), the butt part of the rolled material is not beveled, and the plate thickness is small when welding the butt part. There are problems such as difficulty in welding to the deep part of the direction. Furthermore, when trying to weld hot rolled materials together, there is a problem in that it is difficult to ensure sufficient joint strength due to the attached scale.
【０００６】そこで、本発明は、上記従来の溶接方法の
如き問題点をなくし容易に接合できるようにするために
、先行圧延材の後端部と後行圧延材の先端部とを簡単に
板厚方向の最深部まで溶接できるようにする熱間圧延材
の接合方法及び装置を提供しようとするものである。[0006] Therefore, in order to eliminate the problems of the conventional welding method described above and to enable easy joining, the present invention has been devised to simply connect the rear end of the preceding rolled material and the leading end of the subsequent rolled material into plates. It is an object of the present invention to provide a method and apparatus for joining hot-rolled materials that enables welding to the deepest part in the thickness direction.
【０００７】[0007]
【課題を解決するための手段】本発明は、上記課題を解
決するために、先行圧延材の後端部又は後行圧延材の先
端部のいずれか一方を部分的にプレスにより板厚方向に
圧縮して端面に突起部を成形し、該突起部を相手方の圧
延材の端面に当接させ、次いで、該当接部を溶接して接
合する方法及び装置とする。この場合に、突起部を、先
行圧延材の後端面と後行圧延材の先端面の双方に設けて
、互いの突起部を当接させて先行圧延材の後端面と後行
圧延材の先端面とを溶接するようにしてもよく、又、突
起部を設ける代りに、先行圧延材の後端面と後行圧延材
の先端面との間にスペーサを挿入して隙間を形成させる
ようにし、この隙間を溶接接合するようにすることもで
きる。さらに、溶接直前に接合部のスケールを除去する
ようにして一層確実な接合ができるようにしている。[Means for Solving the Problems] In order to solve the above problems, the present invention partially presses either the rear end of the preceding rolled material or the leading end of the trailing rolled material in the thickness direction. A method and apparatus are provided in which a protrusion is formed on an end surface by compression, the protrusion is brought into contact with the end surface of a mating rolled material, and then the corresponding contact portion is welded and joined. In this case, protrusions are provided on both the rear end surface of the preceding rolled material and the leading end surface of the trailing rolled material, and the projections are brought into contact with each other so that the rear end surface of the leading rolled material and the leading end of the trailing rolled material are brought into contact with each other. Alternatively, instead of providing the protrusion, a spacer may be inserted between the rear end surface of the preceding rolled material and the leading end surface of the succeeding rolled material to form a gap. This gap can also be joined by welding. Furthermore, scale is removed from the joint immediately before welding to ensure a more reliable joint.
【０００８】[0008]
【作用】先行圧延材の後端部と後行圧延材の先端部のい
ずれか一方か若しくは双方に、部分的に板厚方向へ圧縮
すると、圧縮された個所は端面側へ押し出されて突起部
が形成される。この突起部の存在により先行圧延材の後
端面と後行圧延材の先端面を突き合わせると、両端面に
隙間が形成されることになり、厚板の圧延材でもこの隙
間を溶接することにより先後行の圧延材同士を接合でき
る。上記突起部の成形が容易なので、短時間に接合でき
ると共に、板厚方向の最深部まで溶接できる。スペーサ
を挿入して隙間を作る場合は、プレスによる突起部の成
形が不要で容易に且つより短時間に接合できることにな
る。さらに、溶接直前に接合部のスケールをスカーファ
ーなどで除去するようにすれば、清浄な状態で溶接する
ことができ、一層確実で強固な接合ができることになる
。[Operation] When either or both of the rear end of the leading rolled material and the leading end of the trailing rolled material is partially compressed in the thickness direction, the compressed area is pushed out toward the end surface and forms a protrusion. is formed. Due to the presence of this protrusion, when the rear end surface of the preceding rolled material and the leading end surface of the trailing rolled material are brought together, a gap is formed between both end surfaces. It is possible to join the rolled materials in the preceding and succeeding rows. Since the protrusion is easy to form, it can be joined in a short time and can be welded to the deepest part in the plate thickness direction. When creating a gap by inserting a spacer, there is no need to mold the protrusion using a press, making it possible to join easily and in a shorter time. Furthermore, by removing scale from the joint with a scarfer or the like immediately before welding, welding can be performed in a clean state, resulting in a more reliable and strong joint.
【０００９】[0009]
【実施例】以下、本発明の実施例を図面を参照して説明
する。図１は本発明の一実施例を示すもので、先行圧延
材１の後端部１ａと後行圧延材２の先端部２ａを粗圧延
機又は仕上圧延機の前で接合して連結し、粗圧延機又は
仕上圧延機で熱間連続圧延できるようにするため、先行
圧延材１の後端部１ａ又は後行圧延材２の先端部２ａの
いずれか一方（図では先行圧延材１の場合を示す）の端
面に、プレスにより突起部３を成形する。すなわち、図
１（Ａ）に示すように、先行圧延材１の後端部１ａの任
意位置、たとえば、幅方向の２個所を、プレス面を斜め
にしたプレス金型４により上方より押圧して板厚方向へ
圧縮し、後端部１ａに部分的に後方へ突出する突起部３
を端面に形成する。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of the present invention, in which a rear end 1a of a preceding rolled material 1 and a leading end 2a of a trailing rolled material 2 are joined and connected in front of a rough rolling mill or a finishing rolling mill. In order to enable continuous hot rolling in a rough rolling mill or a finishing rolling mill, either the rear end 1a of the preceding rolled material 1 or the tip end 2a of the trailing rolled material 2 (in the case of the preceding rolled material 1 in the figure) A protrusion 3 is formed on the end face of the (shown in FIG. 1) by a press. That is, as shown in FIG. 1(A), arbitrary positions, for example, two positions in the width direction, of the rear end portion 1a of the pre-rolled material 1 are pressed from above using a press die 4 with an oblique pressing surface. A protrusion 3 compressed in the plate thickness direction and partially protruding rearward at the rear end 1a
is formed on the end face.
【００１０】この後、図１（Ｂ）に示す如く、上記先行
圧延材１の後端面に突出する突起部３の端面を後行圧延
材２の先端面に当接させることにより先行圧延材１の後
端部１ａと後行圧延材２の先端部２ａとを突き合わせる
。これにより突き合わせ部５には、先行圧延材１と後行
圧延材２との間に突起部３の突出長さ分の隙間６が形成
されることになり、この隙間６が開先として機能する。Thereafter, as shown in FIG. 1(B), the end surface of the protrusion 3 protruding from the rear end surface of the preceding rolled material 1 is brought into contact with the front end surface of the trailing rolled material 2. The rear end 1a of the rolling material 2 and the tip 2a of the trailing rolled material 2 are butted against each other. As a result, a gap 6 corresponding to the protruding length of the projection 3 is formed between the preceding rolled material 1 and the succeeding rolled material 2 in the butt portion 5, and this gap 6 functions as a groove. .
【００１１】次に、図２（Ａ）に示す如く、溶接トーチ
７にて上記隙間６を溶接して先行圧延材１と後行圧延材
２とを接合させる。この溶接トーチ７による溶接に先だ
って、図２（Ｂ）に示す如く、スカーファー７ａを溶接
トーチ７の移動方向前方に設け、スカーフィングの直後
に溶接するようにすれば、先行圧延材１と後行圧延材２
の接合部に付着するスケールを除去することができ、一
層確実に接合することができる。この場合、先行圧延材
１の後端面と後行圧延材２の先端面との溶接接合は部分
的でもよい。そして、溶接接合が終ると、下流の粗圧延
機又は仕上圧延機にて熱間連続圧延する。Next, as shown in FIG. 2(A), the gap 6 is welded using a welding torch 7 to join the preceding rolled material 1 and the subsequent rolled material 2. Prior to welding with this welding torch 7, as shown in FIG. 2(B), if a scarfer 7a is provided in front of the moving direction of the welding torch 7 and welding is performed immediately after scarfing, the preceding rolled material 1 and the rear Row rolled material 2
It is possible to remove the scale that adheres to the joints of the joints, and the joints can be joined more reliably. In this case, the welding connection between the rear end surface of the preceding rolled material 1 and the front end surface of the trailing rolled material 2 may be partial. After welding and joining are completed, continuous hot rolling is carried out in a downstream rough rolling mill or finishing mill.
【００１２】上記において、プレス金型４により先行圧
延材１の後端部１ａを幅方向の部分的に圧縮成形する際
、圧延材１の移動に追従させてプレス金型４を移動させ
ながら行うようにしてもよく、また、圧延材１を停止し
た状態で成形させるようにしてもよい。In the above, when the rear end portion 1a of the previously rolled material 1 is partially compression-molded in the width direction using the press mold 4, the press mold 4 is moved to follow the movement of the rolled material 1. Alternatively, the rolling material 1 may be formed while it is stopped.
【００１３】溶接装置７は圧延材１の移動に追従させて
圧延ライン方向へも移動できるようにするため、図３（
Ａ），（Ｂ）に一例を示す如く、熱間圧延ラインの方向
と平行に敷設したレール８上に走行台車９を走行自在に
載置し、該走行台車９に圧延材１，２の幅方向と平行に
レール８ａを敷設し、このレール８ａ上に、２台の横行
台車９ａを横行自在に搭載してそれぞれに溶接トーチ７
およびスカーファー７ａを搭載し、圧延材１，２の進行
に追従しながら横移動させて突き合わせ部５のスケール
の除去と溶接接合を行わせるようにする。なお、横行台
車９ａは１台だけで構成するようにしても良い。In order to enable the welding device 7 to move in the direction of the rolling line following the movement of the rolled material 1, the welding device 7 shown in FIG.
As an example is shown in A) and (B), a running cart 9 is movably mounted on rails 8 laid parallel to the direction of the hot rolling line. A rail 8a is laid parallel to the direction, and two traversing carts 9a are mounted on the rail 8a so as to be able to traverse freely, and a welding torch 7 is attached to each of the rails 8a.
A scarfer 7a is mounted and moved laterally while following the progress of the rolled materials 1 and 2 to remove scale from the abutting portion 5 and perform welding. Note that the traversing cart 9a may be configured with only one unit.
【００１４】上記の実施例では、先行圧延材１の後端部
１ａの上部コーナ部を部分的にプレス金型４で圧縮して
端面側に突出する突起部３を形成するようにした場合を
示したが、同様なプレス金型４を上下に配して、先行圧
延材１の後端部１ａを、図４に示す如く、上下両側より
圧縮して押し出すことにより端面へ突出する突起部３を
形成するようにしてもよい。In the above embodiment, the upper corner portion of the rear end portion 1a of the pre-rolled material 1 is partially compressed by the press die 4 to form the protrusion portion 3 protruding toward the end surface side. As shown in FIG. 4, similar press molds 4 are disposed above and below to compress and extrude the rear end portion 1a of the previously rolled material 1 from both the upper and lower sides, thereby forming a protrusion 3 projecting toward the end surface. may be formed.
【００１５】また、先行圧延材１の後端部１ａをプレス
金型４で圧縮して突起部３を形成するときの成形加工を
理解し易くするために、図１、図２及び図４では、プレ
ス金型４の圧縮による凹みの角部や隅部を角形にした場
合を示したが、プレス金型４は、金型面の両側のエッジ
部を円弧状に丸味をつけたものを用い、先行圧延材１の
後端部１ａの圧縮による凹みの角部や隅部が円弧をなす
ようにする方がよい。Further, in order to make it easier to understand the forming process when compressing the rear end portion 1a of the pre-rolled material 1 with the press die 4 to form the projection 3, FIGS. 1, 2 and 4 are not shown. , a case is shown in which the corners and corners of the depression caused by compression of the press die 4 are made square, but the press die 4 uses a press die 4 in which the edges on both sides of the die surface are rounded into an arc shape. It is preferable that the corners and corners of the depressions caused by the compression of the rear end portion 1a of the pre-rolled material 1 form circular arcs.
【００１６】さらに、プレス金型４の幅を広くして後端
部１ａの中央部分を幅広く圧縮し、幅の広い突起部を端
面に形成するようにすることもできる。Furthermore, it is also possible to widen the width of the press die 4 and compress the central portion of the rear end 1a to form a wide protrusion on the end surface.
【００１７】次に、本発明の接合方法の他の実施例につ
いて説明する。この実施例では、先行圧延材１の後端部
１ａにのみプレスにより部分的に突起部３を形成する前
記実施例に代え、同様の突起部３を後行圧延材２の先端
部２ａにも形成して、突起部３同士を当接させることに
よって先行圧延材１の後端部１ａと後行圧延材２の先端
部２ａとを突き合わせるようにし、突き合わせ部を、図
２（Ａ）または（Ｂ）の如く、溶接トーチ７で溶接した
り、またはスカーファー７ａ及び溶接トーチ７にてスケ
ール除去後、溶接して接合させるようにすることもでき
る。この場合は、先行圧延材１の後端部１ａを圧縮して
突起部３を形成するためのプレス金型４のほかに、後行
圧延材２の先端部２ａを圧縮して突起部を形成するため
のプレス金型を用意して、走間で又は圧延材１，２の停
止状態でプレス加工し突起部を成形させるようにする。Next, another embodiment of the joining method of the present invention will be described. In this embodiment, instead of the above-described embodiment in which a protrusion 3 is partially formed by pressing only on the rear end 1a of the preceding rolled material 1, a similar protrusion 3 is also formed on the tip 2a of the subsequent rolled material 2. By forming the protrusions 3 into contact with each other, the rear end 1a of the preceding rolled material 1 and the tip 2a of the succeeding rolled material 2 are brought into abutment, and the abutting portion is made as shown in FIG. 2(A) or As shown in (B), welding may be performed using a welding torch 7, or the scale may be removed using a scarfer 7a and a welding torch 7, and then welding may be performed to join the parts. In this case, in addition to the press die 4 for compressing the rear end 1a of the preceding rolled material 1 to form the protrusion 3, the press die 4 is used to compress the tip end 2a of the trailing rolled material 2 to form the protrusion. A press die for this purpose is prepared, and the protrusions are formed by press working during running or while the rolled materials 1 and 2 are stopped.
【００１８】この実施例の接合方法によれば、先行圧延
材１の後端面の突起部３と後行圧延材２の先端面の突起
部３とを当接させて先行圧延材１と後行圧延材２とを突
き合わせることから、各突起部３の突出長さが短かくて
も突き合わせ時の先行圧延材１と後行圧延材２間に所定
の隙間を確保することができるので、個々の突起部３の
突出長さは短かくてよく、プレスによる圧縮も少なくて
すむ。According to the joining method of this embodiment, the protrusion 3 on the rear end surface of the preceding rolled material 1 and the protrusion 3 on the front end surface of the trailing rolled material 2 are brought into contact with each other to connect the leading rolled material 1 and the trailing rolled material 1. Since the rolled material 2 is butted against each other, a predetermined gap can be secured between the leading rolled material 1 and the trailing rolled material 2 at the time of butting, even if the protruding length of each protrusion 3 is short. The protrusion length of the protrusion 3 may be short, and compression by pressing may be reduced.
【００１９】次に、図５は本発明の更に別の実施例を示
すもので、プレス金型４による圧縮により突起部３を形
成する方法に代え、円周方向の一部に形成した突起１１
を軸心方向に部分的に配設したプレス用成形ロール１０
を、圧延材１，２が通過する圧延ラインを挟んで上下の
いずれか一方又は上下に配置し、先行圧延材１の後端部
１ａ又は後行圧延材２の先端部２ａのいずれか一方又は
両方に部分的に突起１１により圧縮作用を加えて端面に
突起部３を形成するようにしたものである。Next, FIG. 5 shows still another embodiment of the present invention, in which instead of the method of forming the protrusion 3 by compression with the press die 4, a protrusion 11 formed in a part in the circumferential direction is used.
A press forming roll 10 partially disposed in the axial direction
are arranged either above or below or above and below the rolling line through which the rolled materials 1 and 2 pass, and either the rear end 1a of the preceding rolled material 1 or the tip end 2a of the trailing rolled material 2 or The projections 3 are formed on the end faces by applying a compressive action to both parts using the projections 11.
【００２０】成形ロール１０を上方に有し、下方には通
常のフラットロールを用いた構成とすれば、上記後端部
１ａや先端部２ａは上方のみからプレスされて凹みが形
成されると同時に端面に突起部３が形成されること、上
下に突起１１付きの成形ロール１０を配置して、同期し
て回転させるようにすれば、上記後端部１ａや先端部２
ａを上下よりプレスして板厚方向の中央部分に突起部３
が形成されること、等は前記した図１の実施例の場合と
同様である。If the configuration is such that the forming roll 10 is provided above and a normal flat roll is used below, the rear end 1a and the tip 2a are pressed only from above to form a recess. By forming the protrusion 3 on the end face and by arranging the forming rolls 10 with the protrusions 11 above and below and rotating them in synchronization, the rear end 1a and the tip 2
Press a from above and below to form a protrusion 3 in the center of the board in the thickness direction.
is formed in the same manner as in the embodiment shown in FIG. 1 described above.
【００２１】こうして先行圧延材１と後行圧延材２とを
突き合わせた後、突き合わせ部を、図２（Ａ）または（
Ｂ）の如く、溶接トーチ７で溶接したり、またはスカー
ファー７ａ及び溶接トーチ７にてスケール除去後、溶接
して接合することも上記実施例と同様である。After the preceding rolled material 1 and the succeeding rolled material 2 are abutted together in this manner, the abutted portion is moved as shown in FIG. 2(A) or (
As in B), welding is performed using a welding torch 7, or after scale removal is performed using a scarfer 7a and a welding torch 7, welding is performed to join, as in the above embodiment.
【００２２】次に、図６は本発明の更に別の実施例を示
すもので、前記各実施例におけるプレス金型７やプレス
用成形ロール１０により圧延材の端部を圧縮して端面に
突起部３を成形させ、先行圧延材１の後端面と後行圧延
材２の先端面とを突き合わせたときに上記突起部３によ
り両者間に隙間が形成させるようにするものに代え、先
行圧延材１の後端面と後行圧延材２の先端面間に簡単な
方法で隙間を形成して、この隙間を溶接して接合させる
ようにしたものである。Next, FIG. 6 shows still another embodiment of the present invention, in which the end of the rolled material is compressed by the press die 7 and the press forming roll 10 in each of the above embodiments to form protrusions on the end surface. Instead of molding the portion 3 so that when the rear end surface of the preceding rolled material 1 and the front end surface of the trailing rolled material 2 are brought into contact with each other, a gap is formed between the two by the projection 3. A gap is formed by a simple method between the rear end surface of the rolling material 1 and the front end surface of the trailing rolled material 2, and this gap is welded to join them.
【００２３】すなわち、先行圧延材１の後端と後行圧延
材２の先端を相対応するように切断して接合面を形成し
、この両接合面を当接させて先行圧延材１と後行圧延材
２を突き合わせるようにし、突き合わせ部に沿い溶接装
置にて溶接接合する際に、図示の如く、先行圧延材１及
び後行圧延材２の板厚とほぼ同じかそれより短かい長さ
とした中実丸棒状のスペーサ１２を、先行圧延材１の後
端部１ａと後行圧延材２の先端部２ａとの突き合わせ時
に挿入して、先行圧延材１の後端面と後行圧延材２の先
端面とで挾持させ、該スペーサ１２の挿入によって形成
された先行圧延材１と後行圧延材２の端面間の隙間６を
溶接して接合させるようにする。なお、この溶接に先だ
って、スカーフィングを行ってスケールを除去するよう
にすれば、一層確実に接合できる。That is, the rear end of the preceding rolled material 1 and the leading end of the trailing rolled material 2 are cut to correspond to each other to form a joint surface, and these two joint surfaces are brought into contact with each other to connect the leading rolled material 1 and the trailing rolled material 2. When the row-rolled materials 2 are brought into abutment and welded together using a welding device along the abutting portion, a length that is approximately the same as or shorter than the plate thickness of the preceding rolled material 1 and the subsequent rolled material 2 is used, as shown in the figure. A spacer 12 in the shape of a solid round bar is inserted when the rear end 1a of the preceding rolled material 1 and the leading end 2a of the trailing rolled material 2 are butted together, so that the rear end surface of the leading rolled material 1 and the trailing rolled material 1 are brought into contact with each other. 2, and the gap 6 between the end faces of the preceding rolled material 1 and the trailing rolled material 2 formed by inserting the spacer 12 is welded to join them. Note that if scale is removed by scarfing prior to this welding, the joining can be made more securely.
【００２４】そのために、圧延材が通過する熱間圧延ラ
インの上方に、スペーサ１２を上下方向へ案内するため
のスペーサガイド１３とスペーサ押込み装置（図示せず
）を圧延ライン方向へ移動できるように設け、且つ上記
スペーサ１２は圧延材１，２と共通の材料とするか、又
は圧延材１，２の接合材とする。For this purpose, a spacer guide 13 for guiding the spacer 12 in the vertical direction and a spacer pushing device (not shown) are placed above the hot rolling line through which the rolled material passes, so that they can be moved in the direction of the rolling line. The spacer 12 is made of the same material as the rolled materials 1 and 2, or is a bonding material for the rolled materials 1 and 2.
【００２５】この実施例によれば、スペーサ１２を先行
圧延材１の後端面と後行圧延材２の先端面との間に挿入
して先行圧延材１と後行圧延材２とで挟持させるだけの
操作で、両圧延材１，２間に隙間６が形成でき、しかも
この隙間６はスペーサ１２の厚さにより所定の値に設定
できるので、溶接用の開先形成のための操作を容易に行
うことができる。なお、図６では、スペーサ１２として
中実の丸棒状のものを用いた場合を示したが、角棒状の
ものをスペーサとして使用するようにしてもよい。According to this embodiment, the spacer 12 is inserted between the rear end surface of the preceding rolled material 1 and the leading end surface of the trailing rolled material 2, so that the spacer 12 is sandwiched between the leading rolled material 1 and the trailing rolled material 2. A gap 6 can be formed between the two rolled materials 1 and 2 with a simple operation, and this gap 6 can be set to a predetermined value depending on the thickness of the spacer 12, making the operation for forming a groove for welding easy. can be done. Although FIG. 6 shows a case where a solid round bar-shaped spacer is used as the spacer 12, a square bar-shaped spacer may be used as the spacer.
【００２６】[0026]
【発明の効果】以上述べた如く、本発明の熱間圧延材の
接合方法及び装置によれば、先行圧延材の後端部と後行
圧延材の先端部とを接合して、下流の粗圧延機又は仕上
圧延機で熱間連続圧延を行わせるようにするため、先行
圧延材の後端部又は後行圧延材の先端面のいずれか一方
又は双方を部分的にプレスにより板厚方向に圧縮して端
面に突出する突起部を形成し、この突起部により先行圧
延材の後端面と後行圧延材の先端部の突き合わせ部に隙
間を形成させ、この隙間を溶接して先行と後行の圧延材
同士を接合させるようにするので、先行圧延材の後端部
と後行圧延材の先端部に複雑な加工をする必要がなく、
しかも先行圧延材と後行圧延材の突き合わせ部を板厚方
向の最深部まで溶接することができて、接合を短時間に
且つ確実に行わせることができる。また、上記突起部の
成形はプレス金型や突起付圧延ロールでできるので、突
起部の加工が容易である。As described above, according to the method and apparatus for joining hot-rolled materials of the present invention, the trailing end of the preceding rolled material and the leading end of the trailing rolled material are joined, thereby reducing the roughness of the downstream material. In order to perform hot continuous rolling in a rolling mill or finishing mill, either or both of the rear end of the preceding rolled material or the leading end surface of the succeeding rolled material is partially pressed in the thickness direction. A protrusion is formed that protrudes from the end surface by compression, and this protrusion forms a gap between the butt of the rear end surface of the leading rolled material and the leading end of the trailing rolled material, and this gap is welded to separate the leading and trailing materials. Since the rolled materials are joined together, there is no need to perform complicated processing on the rear end of the preceding rolled material and the tip of the trailing rolled material.
In addition, the abutted portions of the preceding rolled material and the subsequent rolled material can be welded to the deepest part in the plate thickness direction, and the joining can be performed reliably in a short time. Further, since the protrusions can be formed using a press mold or a rolling roll with protrusions, processing of the protrusions is easy.
【００２７】さらに、先行圧延材の後端面と後行圧延材
の先端面とをスペーサを挾持させて突き合わせることに
より、先行圧延材の後端面と後行圧延材の先端面間に隙
間を形成させるようにすれば、突起部形成のための加工
が不要で且つスペーサの挿入という簡単な操作で溶接の
ための隙間を作ることができると共に、スペーサの厚さ
により所定の寸法の隙間を設定することができるという
優れた効果を奏し得る。 また、溶接に先だってスケ
ールを除去するようにすることで、一層確実に接合する
ことができ、溶接装置で溶接トーチの移動方向前方にス
カーファーを設けるようにしているので、スケールを除
去した直後に溶接することができ、溶接強度を十分確保
することができる。Furthermore, by abutting the rear end surface of the preceding rolled material and the leading end surface of the trailing rolled material with a spacer in between, a gap is formed between the trailing end surface of the leading rolling material and the leading end surface of the trailing rolling material. By doing so, there is no need for processing to form the protrusion, and a gap for welding can be created with the simple operation of inserting a spacer, and a gap of a predetermined size can be set depending on the thickness of the spacer. This has the excellent effect of being able to. In addition, by removing scale before welding, we can achieve even more reliable joints, and since we have installed a scarfer in front of the welding torch in the direction of movement of the welding equipment, immediately after removing scale, It can be welded, and sufficient welding strength can be ensured.
【図１】本発明の熱間圧延材の接合方法の実施工程を示
すもので、（Ａ）は突起部の成形時の状態を示す斜視図
であり、（Ｂ）は突き合わせ時の状態を示す切断側面図
である。FIG. 1 shows the implementation steps of the method for joining hot-rolled materials of the present invention, in which (A) is a perspective view showing the state of a protrusion when it is formed, and (B) is a perspective view showing the state when butted together. FIG.
【図２】突き合わせ部を溶接する状態を示す斜視図であ
り、（Ａ）は溶接のみを行う場合を、（Ｂ）はスケール
除去後、溶接を行う場合をそれぞれ示す。FIG. 2 is a perspective view showing a state in which butt portions are welded; (A) shows a case in which only welding is performed, and (B) shows a case in which welding is performed after scale removal.
【図３】溶接装置の一実施例を示すもので、（Ａ）は断
面図であり、（Ｂ）は側面図である。FIG. 3 shows an embodiment of a welding device, in which (A) is a sectional view and (B) is a side view.
【図４】突起部成形の他の例を示す断面図である。FIG. 4 is a sectional view showing another example of protrusion molding.
【図５】プレス金型に代る成形ロールにより圧延材に突
起部を形成する状態を示す図である。FIG. 5 is a diagram showing a state in which protrusions are formed on a rolled material using a forming roll instead of a press die.
【図６】本発明の別の実施例であるスペーサにより突き
合わせ部に隙間を形成する状態を示す図である。FIG. 6 is a diagram showing a state in which a gap is formed in the abutting portion by a spacer according to another embodiment of the present invention.
１ 先行圧延材 １ａ 後端部 ２ 後行圧延材 ２ａ 先端部 ３ 突起部 ４ プレス金型（プレス） ５ 突き合わせ部 ６ 隙間 ７ 溶接トーチ（溶接装置） ７ａ スカーファー １０ 成形ロール １１ 突起 １２ スペーサ 1 Pre-rolled material 1a Rear end 2 Trailing rolled material 2a Tip 3.Protrusion 4 Press mold (press) 5 Butt part 6 Gap 7 Welding torch (welding equipment) 7a Scarfer 10 Forming roll 11 Protrusion 12 Spacer
Claims (8)
端部とを接合する方法において、上記先行圧延材の後端
部と後行圧延材の先端部のうちいずれか一方を部分的に
板厚方向へ圧縮してその端面に突起部を成形し、次いで
、該突起部を相手方の圧延材の端面に当接させて、先行
圧延材の後端部と後行圧延材の先端部とを突き合わせ、
しかる後、上記先行圧延材と後行圧延材の接合部に形成
される隙間を溶接して接合することを特徴とする熱間圧
延材の接合方法。1. A method for joining the rear end of the preceding rolled material and the leading end of the trailing rolled material, wherein one of the trailing end of the leading rolled material and the leading end of the trailing rolled material is partially joined. The protrusions are formed on the end surfaces of the sheets by compressing them in the thickness direction, and then the protrusions are brought into contact with the end surfaces of the other rolled material to separate the rear end of the preceding rolled material and the tip of the trailing rolled material. and the department.
A method for joining hot-rolled materials, characterized in that the gap formed at the joint between the preceding rolled material and the subsequent rolled material is then welded to join them.
端部とを接合する方法において、上記先行圧延材の後端
部と後行圧延材の先端部を各々部分的に板厚方向へ圧縮
して各々の端面に突起部を成形し、次いで、該各突起部
同士を当接させるように先行圧延材の後端部と後行圧延
材の先端部を突き合わせ、しかる後、上記先行圧延材と
後行圧延材の接合部に形成される隙間を溶接して接合す
ることを特徴とする熱間圧延材の接合方法。2. A method for joining a rear end of the preceding rolled material and a leading end of the trailing rolled material, wherein the trailing end of the leading rolled material and the leading end of the trailing rolled material are partially joined by a plate thickness. direction to form a protrusion on each end face, then butt the rear end of the preceding rolled material and the tip of the subsequent rolled material so that the respective protrusions are in contact with each other, and then A method for joining hot-rolled materials, which comprises welding a gap formed at a joint between a preceding rolled material and a subsequent rolled material.
端部とを接合する方法において、上記先行圧延材の後端
面と後行圧延材の先端面との間に、該圧延材の板厚寸法
と同じかやや短かい長さのスペーサを挿入して挾持させ
、次いで、上記スペーサにより先行圧延材と後行圧延材
の接合部に形成される隙間を溶接して接合することを特
徴とする熱間圧延材の接合方法。3. In a method for joining the rear end of the preceding rolled material and the leading end of the trailing rolled material, the rolled material is placed between the trailing end surface of the preceding rolling material and the leading end surface of the trailing rolling material. A spacer with a length equal to or slightly shorter than the plate thickness dimension is inserted and clamped, and then the gap formed by the spacer at the joint between the preceding rolled material and the subsequent rolled material is welded and joined. A unique method for joining hot rolled materials.
に形成される隙間を溶接する直前に上記接合部に付着し
ているスケールを除去するようにしたことを特徴とする
請求項１乃至３のいずれかに記載の熱間圧延材の接合方
法。4. The method of claim 1, wherein scale adhering to the joint is removed immediately before welding the gap formed at the joint between the preceding rolled material and the subsequent rolled material. 4. The method for joining hot rolled materials according to any one of 3 to 3.
部と後行圧延材の先端部のいずれか一方又は双方を部分
的に板厚方向へ圧縮して端面側へ押し出すことにより突
起部を形成するための金型を有するプレスを備え、且つ
突起部形成後に先行圧延材の後端部と後行圧延材の先端
部との突き合わせ部を溶接接合するための溶接装置を圧
延材の移動方向へ移動できるように備えてなることを特
徴とする熱間圧延材の接合装置。5. Before the hot rolling mill, one or both of the rear end of the preceding rolled material and the tip of the trailing rolled material are partially compressed in the thickness direction and pushed out toward the end face side. The rolling machine is equipped with a press having a mold for forming protrusions, and a welding device for welding and joining the butt portion of the rear end of the preceding rolled material and the tip of the succeeding rolled material after the protrusion is formed. A joining device for hot rolled materials, characterized in that the device is capable of moving in the direction of movement of the materials.
における外周面の一部に突起を有する成形ロールを用い
るようにする請求項５記載の熱間圧延材の接合装置。6. The apparatus for joining hot rolled materials according to claim 5, wherein a forming roll having protrusions on a portion of the outer peripheral surface at a partial position in the axial direction is used in place of the press.
部と後行圧延材の先端部の各端面間に隙間を形成するた
めに挿入するスペーサの挿入装置を備え、且つ上記隙間
を溶接接合する溶接装置を圧延材の移動方向へ移動でき
るように備えてなることを特徴とする熱間圧延材の接合
装置。7. A spacer insertion device inserted in front of the hot rolling mill to form a gap between each end face of the rear end of the preceding rolled material and the leading end of the trailing rolled material; A joining device for hot rolled materials, characterized in that a welding device for welding and joining gaps is movable in the moving direction of the rolled materials.
合部に付着しているスケールを除去するスカーファーを
設けたことを特徴とする請求項５または７記載の熱間圧
延材の接合装置。8. The apparatus for joining hot-rolled materials according to claim 5, further comprising a scarfer provided in front of the welding apparatus in the moving direction for removing scale adhering to the weld joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14560491A JPH04238607A (en) | 1990-12-14 | 1991-05-21 | Method and device for joining hot rolled stock |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41060490 | 1990-12-14 | ||
| JP2-410604 | 1990-12-14 | ||
| JP14560491A JPH04238607A (en) | 1990-12-14 | 1991-05-21 | Method and device for joining hot rolled stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04238607A true JPH04238607A (en) | 1992-08-26 |
Family
ID=26476688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14560491A Pending JPH04238607A (en) | 1990-12-14 | 1991-05-21 | Method and device for joining hot rolled stock |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04238607A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014113641A (en) * | 2012-11-16 | 2014-06-26 | Nisshin Steel Co Ltd | ARC WELDING METHOD OF Zn-PLATED STEEL SHEET MEMBER, AND ARC WELDING MEMBER AND ITS MANUFACTURING METHOD |
-
1991
- 1991-05-21 JP JP14560491A patent/JPH04238607A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014113641A (en) * | 2012-11-16 | 2014-06-26 | Nisshin Steel Co Ltd | ARC WELDING METHOD OF Zn-PLATED STEEL SHEET MEMBER, AND ARC WELDING MEMBER AND ITS MANUFACTURING METHOD |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5172846A (en) | Butting device for joining running steel sheets | |
| KR20050030931A (en) | Solid bonding device and method by plasticity flow of hot metal sheets | |
| JP6761663B2 (en) | How to process a plate-shaped work | |
| JPH04238607A (en) | Method and device for joining hot rolled stock | |
| JPH08224684A (en) | Device to guide and feed sheet base stock | |
| US3504427A (en) | Method of joining metal sheet and strip | |
| JPS60148685A (en) | Hot joining method of steel material | |
| CN209998100U (en) | Connecting system for hot-rolled strip steel endless rolling intermediate billet | |
| JP3062843B2 (en) | Method and apparatus for joining hot rolled materials | |
| JP3309790B2 (en) | Billet continuous rolling equipment | |
| JPS6072687A (en) | Production of square shape steel | |
| EP0481358B1 (en) | Method for joining rolled plates | |
| JPH04157003A (en) | Joining method of rolled stock | |
| JPS60184481A (en) | Joining method of thick walled steel material | |
| JPS6213281A (en) | Cold joining device | |
| JPS58202981A (en) | Joining method of sheet bars in fully continuous rolling | |
| JPS60196281A (en) | Joining method of thick-walled steel material | |
| JPS6358045B2 (en) | ||
| JP3309791B2 (en) | Billet end forming device | |
| JPH05212413A (en) | Method for joining hot steel materials | |
| JPS60213380A (en) | Press-welding method of hot rolled plates | |
| JPS635825A (en) | Control method for generating wrinkle on roll bending | |
| JP4047469B2 (en) | Steel strip joining method | |
| JPH04158904A (en) | Joining method of sheet bar | |
| JPS60184483A (en) | Pressure-welding method of high-temperature thick steel material |