JP3840115B2

JP3840115B2 - Manufacturing equipment column and manufacturing method for parts

Info

Publication number: JP3840115B2
Application number: JP2002014378A
Authority: JP
Inventors: 真也坂本; 好男寺田; 博雄石橋; 隆大沢
Original assignee: Nippon Steel Corp
Current assignee: Nippon Steel Corp
Priority date: 2002-01-23
Filing date: 2002-01-23
Publication date: 2006-11-01
Anticipated expiration: 2022-01-23
Also published as: JP2003220411A

Description

【０００１】
【発明の属する技術分野】
本発明は鋼管を素材とした部材の製造設備列と製造方法に関するものである。
【０００２】
【従来の技術】
従来、鋼管を素材とした部材の製造は、素材供給メ−カ−で帯鋼を管状に連続ロ−ル成形し、鋼管を製造した後、鋼管の表面に潤滑剤を均一塗布し、出荷する。素材メ−カ−より出荷された鋼管は長尺のため、切断メ−カ−にて所定の長さに切断した後、部品加工メ−カ−へ搬送され、最終部材へと加工する。ハイドロフォ−ムによる加工の場合は鋼管を金型にセットし、内圧と軸押しにより複雑な形状へ加工するが、形状が複雑のため鋼管を金型にセットするために予加工を実施する場合が大半である。鋼管を金型へセットできる形状に予加工し、ハイドロフォ−ム加工により最終形状に加工する。ハイドロフォ−ムの加工性は鋼管の表面の潤滑性が特に重要であり、素材メ−カ−にて出荷前に鋼管の表面に均一塗布した潤滑剤は切断メ−カ−での切断および予加工、さらには輸送等により均一性が損なわれる。ハイドロフォ−ムのように潤滑性が重要とされる加工では潤滑性の劣化により割れが発生することもある。
【０００３】
【発明が解決しようとする課題】
鋼管を素材とした部材の製造において、今後ますます鋼材の加工性と製造コストの低減の要求が高まることは間違いない。その際、設備の有効利用、製造工程の効率化の観点から、技術的に検討する余地があると考えられる。本発明は鋼管を素材とした部材の製造設備列と製造方法を提供することを目的としている。
【０００４】
【課題を解決するための手段】
本発明の要旨とするところは以下のとおりである。
（１）鋼板を切断し、成形し、溶接することにより鋼管を製造し、更に鋼管を加工する鋼管製造設備列において、鋼板を所定寸法に切断する切断装置と、前記切断した鋼板を板巻き成形により、オ−プン管に成形する成形装置と、前記成形したオ−プン管の突合せ部を溶接することにより鋼管を製造するレ−ザ−溶接装置と、前記溶接後の鋼管に加工用の潤滑剤を塗布する潤滑剤塗布装置と、前記潤滑剤を塗布した鋼管を曲げ、あるいはプレスなどの加工を施す加工装置、あるいは管内に液圧をかけて変形加工を行うハイドロフォ−ム加工装置を設けたことを特徴とする部材の製造設備列。
（２）（１）記載の部材の製造設備列であって、加工装置がハイドロフォ−ム加工装置である場合に、前記潤滑剤塗布装置の後に、更に予加工装置を設け、その後に必要に応じて潤滑剤塗布装置を備えたことを特徴とする部材の製造設備列。（３）（１）記載の部材の製造設備列であって、加工装置がハイドロフォ−ム加工装置である場合に、前記レ−ザ−溶接装置の後に、更に予加工装置を設けたことを特徴とする部材の製造設備列。
（４）（１）乃至（３）記載の設備列のうち、前記切断装置までの設備列を素材供給メ−カ−に備え、それ以降の設備列を部品加工メ−カ−で備えたことを特徴とする部材の製造設備列。
（５）（１）乃至（３）記載の設備列のうち、前記レ−ザ−溶接装置までの設備列を素材供給メ−カ−に備え、それ以降の設備列を部品加工メ−カ−に備えたことを特徴とする部材の製造設備列。
（６）（１）乃至（３）記載の設備列のうち、前記潤滑剤塗布装置、複数あるときは最初の潤滑剤塗布装置までの設備列を素材供給メ−カ−に備え、それ以降の設備列を部品加工メ−カ−に備えたことを特徴とする部材の製造設備列。
（７）鋼板を切断し、成形し、溶接することにより鋼管を製造し、更に鋼管を加工する鋼管の製造方法において、鋼板を所定寸法に切断し、前記切断した鋼板を板巻き成形により、オ−プン管に成形し、前記成形したオ−プン管の突合せ部をレ−ザ−溶接することにより鋼管を製造し、前記溶接後の鋼管に加工用の潤滑剤を塗布し、前記潤滑剤を塗布した鋼管を曲げ、あるいはプレスなどの加工を施し、あるいは管内に液圧をかけて変形加工を行うハイドロフォ−ム加工を施すことを特徴とする部材の製造方法。
（８）（７）記載の部材の製造方法であって、加工方法がハイドロフォ−ム加工である場合に、前記潤滑剤を塗布した後に、更に予加工を施し、その後に必要に応じて再度潤滑剤を塗布することを特徴とする部材の製造方法。
（９）（７）記載の部材の製造方法であって、加工方法がハイドロフォ−ム加工である場合に、前記レ−ザ−溶接の後に、更に予加工を施すことを特徴とする部材の製造方法。
（１０）（７）乃至（９）記載の製造方法において、前記切断工程までを素材供給メ−カ−で行い、それ以降の工程を部品加工メ−カ−で行うことを特徴とする部材の製造方法。
（１１）（７）乃至（９）記載の製造方法において、前記レ−ザ−溶接工程までを素材供給メ−カ−で行い、それ以降の工程を部品加工メ−カ−で行うことを特徴とする部材の製造方法。
（１２）（７）乃至（９）記載の製造方法において、前記潤滑剤の塗布、複数工程あるときは最初の潤滑剤塗布までの工程を素材供給メ−カ−で行い、それ以降の工程を部品加工メ−カ−で行うことを特徴とする部材の製造方法。
【０００５】
従来、鋼管を素材とした部材の製造は、素材供給メ−カ−で帯鋼を連続ロ−ル成形し、鋼管を製造し、潤滑剤を均一塗布して出荷している。鋼管は長尺のため、部材の長さに合った所定長さに切断メ−カ−で切断後、部品加工メ−カ−へ搬送される。鋼管は中空のため、コイルや切り出した鋼板に比べて輸送の効率が悪くコスト高となる。さらに切断メ−カ−経由とのこともあり、部材の製造コストに占める輸送コストの割合は高い。また、出荷前に鋼管の表面に均一塗布した潤滑剤は切断メ−カ−での切断、ハイドロフォ−ム加工の場合は予加工、さらには輸送等により均一性が損なわれ、特にハイドロフォ−ムのように潤滑性が必要とされる加工では潤滑性の劣化による割れが発生することもある。
【０００６】
本発明は鋼管を素材とした部材の製造設備列とその製造方法に関するものであり、本製造設備列であれば、潤滑剤の均一性が保たれ加工性向上および加工安定化が可能である。さらに、輸送コストの低減に伴う部材の製造コスト低減が図れる。
【０００７】
【発明の実施の形態】
以下に図１を参照し、本発明の鋼管を素材とした部材の製造設備列とその製造方法について詳細に説明する。
【０００８】
まず、本発明に係わる製造工程を図１（ａ）に示す。先ず帯鋼を所定の形状に切断１する。切断した鋼板を板捲き成形によりオ−プン管に成形する装置２と成形したオ−プン管の突き合わせ部を溶接することにより鋼管を製造するレ−ザ−溶接装置３を組み合わせた鋼管製造装置Ａにより鋼管を製造する。板捲き成形による鋼管製造装置Ａを使用する場合は、鋼管の外径、長さに合わせた鋼板サイズに予め切断１するため、部材の加工前の切断工程が省略できる。
【０００９】
突き合わせ部の接合はレ−ザ−溶接によって行う。突き合わせエッジはエッジガイドフィンとサイザ−ロ−ルにより精度良く位置合わせを行い、管状に成形した鋼管を長手方向へ連続的に移動することで溶接する。
【００１０】
電縫鋼管の電縫溶接においては、肉厚が２ｍｍ未満となると座屈が発生して造管することが不可能であったが、本発明のレ−ザ−溶接では２ｍｍ未満の薄肉鋼管であっても座屈の発生なく溶接することができる。
【００１１】
電縫溶接では、高周波誘導加熱により溶接のＨＡＺの幅が広くなるのに対し、レ−ザ−溶接においては溶接のＨＡＺの幅を２ｍｍ以下とすることができ、鋼管の均一性を高めることができる。
【００１２】
電縫溶接ではＨＡＺの幅が１０ｍｍ程度発生するのに対し、レ−ザ−溶接においては２ｍｍ程度しか発生しない。特に、薄肉鋼管において、この効果が顕著である。その結果、メッキ鋼板を用いた鋼管において、溶接部においてメッキが被着していない部分の幅を狭くすることができ、溶接後に溶接部の補修メッキを施さなくても耐食性の良好な鋼管とすることができる。
【００１３】
ハイドロフォ−ム加工の場合、加工性向上および加工安定化には鋼管の表面の摩擦係数を小さくすることが効果的であり、鋼管の表面に潤滑剤を均一に塗布することが重要である。従来の製造工程では、図１（ｂ）に示すように、素材メ−カ−にてコイル１４から連続ロ−ル成形によるＥＲＷ造管装置１５により鋼管製造し、潤滑剤１６を塗布した後、出荷している。その後、切断メ−カ−での切断１７および予加工２０することで潤滑剤の均一性が損なわれ、潤滑性の劣化によりハイドロフォ−ム加工２１時に割れが発生することもある。このようなことから、本設備配列では潤滑剤塗布装置は加工直前、予加工が有る場合は予加工後に再度潤滑剤塗布装置を設けることで加工性向上および加工安定化が可能である。
【００１４】
上記のようなことから、鋼管製造後の潤滑剤塗布装置の設備列について図１（ａ）に基づいて説明する。
【００１５】
製造した鋼管は潤滑剤塗布装置４により鋼管の表面に潤滑剤を均一に塗布する。潤滑性が要求される加工５においては、加工直前に潤滑剤を塗布することが好ましい。ハイドロフォ−ム加工の場合、加工性向上および加工安定化のためには特に潤滑性が重要であることから、ハイドロフォ−ム加工直前の鋼管の表面には潤滑剤が均一に塗布されていることが必要である。ハイドロフォ−ム加工前に予加工が無い場合には潤滑剤塗布装置４はハイドロフォ−ム加工６前に設ける。予加工７，１１が有る場合にはハイドロフォ−ム加工１０，１３する前に予加工７，１１で均一性が損なわれた潤滑剤を再度均一塗布するための潤滑剤塗布装置９，１２を設ける。予加工は通常ベンド方式が採用されるケ−スが多く、潤滑性が要求されることは少ない。この場合は、予加工１１した後に潤滑剤塗布装置１２を設けて鋼管の表面に潤滑剤を均一に塗布し，ハイドロフォ−ム加工１３する。このようにハイドロフォ−ム加工前の鋼管の表面に潤滑剤が均一塗布されていることから、加工性の向上および安定化が期待できる。
【００１６】
従来の部材の製造工程では素材メ−カ−にて、鋼管への潤滑剤塗布までの工程を実施し、出荷している。出荷するにあたり、鋼管の輸送はコイルおよび切り出した鋼板の輸送に比較して中空のため効率が悪い。従って、鋼管の輸送コストはコイルおよび切り出した鋼板を輸送するよりコスト高になってしまう。このことから、コイルおよびコイルから所定の鋼板サイズに鋼板を切り出す切断１を素材メ−カ−にて実施し、その後の板捲き成形２、溶接３により鋼管を製造する鋼管製造装置Ａを部品加工メ−カ−に設置することで、材料の輸送コストが削減でき、部材の製造コストは低減可能である。さらに、板捲き成形による鋼管製造装置Ａを使用する場合は、鋼管の外径，長さに合わせた鋼板サイズに予め切断するため、鋼管の切断工程が省略できることから、切断メ−カ−から部品加工メ−カ−への輸送コストの省略や工程省略による製造コストの低減ができる。一方、コイルから所定の鋼板サイズに鋼板を切断１し、切断した鋼板を板捲き成形２、溶接３することにより鋼管を製造する鋼管製造装置Ａを素材メ−カ−に設置し、鋼管の表面の潤滑剤塗布装置を部品加工メ−カ−に設置することもある。潤滑剤塗布装置を部品加工メ−カ−に設置する目的としてはハイドロフォ−ム加工では特に潤滑性が重要であることから、部品加工メ−カ−での加工直前に潤滑剤を鋼管の表面に均一に塗布するためである。
【００１７】
【発明の効果】
本発明は鋼管を素材とした部材の製造設備列とその製造方法を提供するものであり、設備を有効利用し、製造工程を効率化することで、部材の加工性向上および加工安定化と製造コストの低減が可能である。
【図面の簡単な説明】
【図１】鋼管を素材とした部材の製造設備列を示す図であり、（ａ）は本発明例、（ｂ）は従来例である。
【符号の説明】
４、９、１２、１６潤滑剤塗布装置
７、１１、２０予加工装置
６、８、１０、１３、１９、２１ハイドロフォーム加工装置[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a manufacturing equipment row and a manufacturing method for members made of steel pipes.
[0002]
[Prior art]
Conventionally, members made of steel pipes are manufactured by continuously rolling the steel strip into a tubular shape using a material supply manufacturer, manufacturing the steel pipe, and then applying the lubricant uniformly to the surface of the steel pipe before shipping. . Since the steel pipe shipped from the raw material manufacturer is long, it is cut to a predetermined length by a cutting maker and then transferred to a component processing maker to be processed into a final member. In the case of machining by hydroform, the steel pipe is set in a mold and processed into a complicated shape by internal pressure and axial push. When the pre-processing is performed to set the steel pipe in the mold due to the complicated shape Is the majority. The steel pipe is pre-processed into a shape that can be set in a mold, and processed into a final shape by hydroforming. The lubricity of the surface of the steel pipe is particularly important for the processability of the hydroform, and the lubricant uniformly applied to the surface of the steel pipe before shipment by the material manufacturer is cut and pre-cut by the cutting manufacturer. Uniformity is impaired by processing, transportation, and the like. In a process in which lubricity is important, such as a hydroform, cracks may occur due to degradation of lubricity.
[0003]
[Problems to be solved by the invention]
There is no doubt that in the manufacture of parts made of steel pipes, there will be increasing demands for reducing the workability and manufacturing costs of steel materials. At that time, it is considered that there is room for technical consideration from the viewpoint of effective use of facilities and efficiency of the manufacturing process. An object of the present invention is to provide a manufacturing equipment row and a manufacturing method for members made of steel pipes.
[0004]
[Means for Solving the Problems]
The gist of the present invention is as follows.
(1) A steel pipe manufacturing facility line that cuts, forms, and welds steel sheets to manufacture steel pipes, and further cuts the steel sheets into predetermined dimensions in a steel pipe manufacturing facility line, and plate-rolls the cut steel sheets. A forming apparatus for forming an open pipe, a laser welding apparatus for manufacturing a steel pipe by welding a butt portion of the formed open pipe, and a lubrication for processing the steel pipe after welding. There are provided a lubricant application device for applying a lubricant, a processing device for bending or pressing a steel pipe to which the lubricant is applied, or a hydroform processing device for deforming by applying hydraulic pressure in the tube. A manufacturing facility line for members characterized by that.
(2) In the manufacturing equipment row for the member according to (1), when the processing apparatus is a hydroform processing apparatus, a pre-processing apparatus is further provided after the lubricant applying apparatus, and then necessary. Accordingly, a member manufacturing equipment line comprising a lubricant application device. (3) In the member manufacturing equipment row according to (1), when the processing device is a hydroforming device, a pre-processing device is further provided after the laser welding device. Manufacturing equipment line of the characteristic member.
(4) Among the equipment rows described in (1) to (3), the equipment row up to the cutting device is provided in the material supply manufacturer, and the subsequent equipment rows are provided in the component processing manufacturer. Manufacturing equipment row of members characterized by.
(5) Among the equipment rows described in (1) to (3), the equipment row up to the laser welding apparatus is provided in the material supply manufacturer, and the subsequent equipment rows are provided as part processing manufacturers. A manufacturing facility row of members characterized by comprising
(6) Among the equipment rows described in (1) to (3), the material supply manufacturer is provided with the equipment row up to the first lubricant application device when there are a plurality of the lubricant application devices. A member manufacturing facility row characterized in that the equipment row is provided in a component processing manufacturer.
(7) A steel pipe is manufactured by cutting, forming, and welding a steel sheet, and further processing the steel pipe. In the steel pipe manufacturing method, the steel sheet is cut into a predetermined dimension, and the cut steel sheet is formed by sheet winding. -Forming a steel pipe by laser welding the butted portion of the formed open pipe, applying a processing lubricant to the welded steel pipe, and applying the lubricant A method for producing a member, characterized in that a coated steel pipe is subjected to bending or pressing, or hydroforming is performed to apply deformation to the pipe by applying hydraulic pressure.
(8) In the method for manufacturing a member according to (7), when the processing method is hydroforming, after the lubricant is applied, further pre-processing is performed, and then again as necessary. A method for producing a member, comprising applying a lubricant.
(9) The member manufacturing method according to (7), wherein when the processing method is hydroforming, pre-processing is further performed after the laser welding. Production method.
(10) In the manufacturing method according to (7) to (9), a member that is characterized in that the cutting process is performed by a material supply manufacturer, and the subsequent processes are performed by a component processing manufacturer. Production method.
(11) In the manufacturing method according to (7) to (9), the laser welding process is performed by a material supply manufacturer, and the subsequent processes are performed by a component processing manufacturer. A method for producing a member.
(12) In the manufacturing method according to (7) to (9), when there are a plurality of steps of applying the lubricant, the steps up to the first lubricant application are performed by the material supply manufacturer, and the subsequent steps are performed. A method for producing a member, which is performed by a component processing manufacturer.
[0005]
Conventionally, the manufacture of members using steel pipes as a raw material is carried out by continuously rolling steel strips with a raw material supply manufacturer, manufacturing steel pipes, and uniformly applying a lubricant. Since the steel pipe is long, the steel pipe is cut to a predetermined length corresponding to the length of the member by a cutting maker, and then conveyed to a component processing maker. Since the steel pipe is hollow, the transportation efficiency is poor and the cost is high compared to the coil or the cut steel sheet. In addition, there is also a case of via a cutting manufacturer, and the ratio of the transportation cost to the manufacturing cost of the member is high. In addition, the lubricant applied uniformly to the surface of the steel pipe before shipment is damaged by cutting with a cutting maker, pre-processing in the case of hydroforming, further transportation, etc. In a process that requires lubricity, such as a crack, cracks may occur due to degradation of lubricity.
[0006]
The present invention relates to a manufacturing equipment row for members made of steel pipes and a method for manufacturing the same. With this manufacturing equipment row, the uniformity of the lubricant is maintained, and the workability can be improved and the processing can be stabilized. Furthermore, it is possible to reduce the manufacturing cost of the member accompanying the reduction of the transportation cost.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
With reference to FIG. 1, the manufacturing equipment row | line of the member which made the steel pipe of this invention a raw material, and its manufacturing method are demonstrated in detail below.
[0008]
First, a manufacturing process according to the present invention is shown in FIG. First, the steel strip is cut 1 into a predetermined shape. Steel pipe manufacturing apparatus A combining apparatus 2 for forming a cut steel plate into an open pipe by sheet forming and a laser welding apparatus 3 for manufacturing a steel pipe by welding a butted portion of the formed open pipe To manufacture a steel pipe. When using the steel pipe manufacturing apparatus A by plate forming, the cutting process before processing the member can be omitted because the steel pipe is cut 1 in advance in accordance with the outer diameter and length of the steel pipe.
[0009]
The joining of the butt portion is performed by laser welding. The butt edge is accurately aligned by edge guide fins and a sizer roll, and welded by continuously moving a steel pipe formed into a tubular shape in the longitudinal direction.
[0010]
In ERW welding of ERW steel pipes, if the wall thickness is less than 2 mm, buckling occurs and it is impossible to make a pipe. However, in laser welding according to the present invention, a thin steel pipe of less than 2 mm is used. Even if it exists, it can weld without generation | occurrence | production of buckling.
[0011]
In ERW welding, the width of the welded HAZ is widened by high-frequency induction heating, whereas in laser welding, the width of the welded HAZ can be 2 mm or less, which improves the uniformity of the steel pipe. it can.
[0012]
In ERW welding, the width of the HAZ is about 10 mm, whereas in laser welding, only about 2 mm is generated. This effect is particularly remarkable in thin-walled steel pipes. As a result, in the steel pipe using the plated steel plate, the width of the portion where the plating is not deposited in the welded portion can be narrowed, and the steel pipe having good corrosion resistance can be obtained without performing repair plating of the welded portion after welding. be able to.
[0013]
In the case of hydroforming, it is effective to reduce the coefficient of friction on the surface of the steel pipe in order to improve workability and stabilize the work, and it is important to uniformly apply a lubricant to the surface of the steel pipe. In the conventional manufacturing process, as shown in FIG. 1 (b), a steel pipe is manufactured from a coil 14 by an ERW pipe forming device 15 by continuous roll molding with a material maker, and after applying a lubricant 16, Ships. Thereafter, cutting 17 and pre-processing 20 with a cutting maker may impair the uniformity of the lubricant, and cracking may occur during hydroforming 21 due to deterioration in lubricity. For this reason, in this equipment arrangement, it is possible to improve the workability and stabilize the processing by providing the lubricant application device again immediately after the processing, and if there is preprocessing, after the preprocessing.
[0014]
From the above, the equipment row of the lubricant application device after manufacturing the steel pipe will be described with reference to FIG.
[0015]
The manufactured steel pipe is uniformly coated with a lubricant on the surface of the steel pipe by the lubricant application device 4. In the process 5 requiring lubricity, it is preferable to apply a lubricant immediately before the process. In the case of hydroforming, since lubricity is particularly important for improving workability and stabilizing the process, a lubricant is uniformly applied to the surface of the steel pipe immediately before hydroforming. It is necessary. If there is no pre-processing before hydroforming, the lubricant application device 4 is provided before hydroforming 6. In the case where the pre-processes 7 and 11 are present, before the hydroforming processes 10 and 13, the lubricant application devices 9 and 12 for uniformly applying the lubricant whose uniformity has been lost in the pre-processes 7 and 11 are provided. Provide. In pre-processing, the bend method is usually used in many cases, and lubricity is rarely required. In this case, after pre-processing 11, a lubricant application device 12 is provided to uniformly apply the lubricant to the surface of the steel pipe and perform hydroforming 13. Thus, since the lubricant is uniformly applied to the surface of the steel pipe before hydroforming, improvement in workability and stabilization can be expected.
[0016]
In the manufacturing process of conventional members, the process up to the application of the lubricant to the steel pipe is carried out by the material manufacturer and shipped. In shipping, the transportation of the steel pipe is inferior in efficiency because it is hollow compared to the transportation of the coil and the cut steel sheet. Therefore, the transportation cost of the steel pipe becomes higher than that of transporting the coil and the cut steel plate. From this, the steel pipe manufacturing apparatus A for manufacturing the steel pipe by performing the cutting 1 for cutting the steel sheet from the coil into the predetermined steel plate size by the material manufacturer and then manufacturing the steel pipe by the plate forming 2 and the welding 3 is processed. By installing at the manufacturer, the transportation cost of the material can be reduced, and the manufacturing cost of the member can be reduced. Furthermore, when using the steel pipe manufacturing apparatus A by plate forming, the steel pipe is cut in advance according to the outer diameter and length of the steel pipe, so that the cutting process of the steel pipe can be omitted. It is possible to reduce the manufacturing cost by omitting the transportation cost to the processing manufacturer and omitting the process. On the other hand, a steel pipe manufacturing apparatus A for manufacturing a steel pipe by cutting 1 a steel sheet from a coil into a predetermined steel plate size, plate-forming 2 and welding 3 the cut steel sheet is installed in the material manufacturer, and the surface of the steel pipe Such a lubricant application device may be installed at a part processing manufacturer. For the purpose of installing the lubricant applicator on the part processing manufacturer, lubrication is particularly important in hydroforming, so the lubricant is applied to the surface of the steel pipe immediately before processing at the part processing manufacturer. This is because the coating is uniformly applied.
[0017]
【The invention's effect】
The present invention provides a manufacturing equipment row of members made of steel pipes and a manufacturing method thereof, and improves the workability of the members and stabilizes and manufactures them by effectively using the equipment and improving the efficiency of the manufacturing process. Cost can be reduced.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram showing a manufacturing equipment row of members made of steel pipes, (a) is an example of the present invention, and (b) is a conventional example.
[Explanation of symbols]
4, 9, 12, 16 Lubricant coating device 7, 11, 20 Pre-processing device 6, 8, 10, 13, 19, 21 Hydroform processing device

Claims

In a steel pipe manufacturing equipment line that cuts, forms, and welds steel sheets to manufacture steel pipes, and further processes the steel pipes, a cutting device that cuts the steel sheets into predetermined dimensions, and the cut steel sheets by sheet winding forming. -A molding device for forming the open pipe, a laser welding device for manufacturing a steel pipe by welding the butted portion of the open pipe, and applying a working lubricant to the welded steel pipe. Provided with a lubricant application device, a processing device for bending or pressing a steel pipe coated with the lubricant, or a hydroform processing device for performing deformation processing by applying hydraulic pressure in the pipe. Manufacturing equipment line of the characteristic member.

2. The member manufacturing equipment column according to claim 1, wherein when the processing device is a hydroforming device, a pre-processing device is further provided after the lubricant application device, and then lubrication is performed as necessary. A facility manufacturing equipment row comprising an agent application device.

2. The member manufacturing equipment row according to claim 1, wherein when the processing apparatus is a hydroforming apparatus, a pre-processing apparatus is further provided after the laser welding apparatus. Manufacturing equipment column for parts.

Among the equipment rows according to any one of claims 1 to 3, the equipment row up to the cutting device is provided in a material supply manufacturer, and the subsequent equipment rows are provided by a component processing manufacturer. Manufacturing equipment line of the characteristic member.

Among the equipment rows according to any one of claims 1 to 3, an equipment row up to the laser welding apparatus is provided in a raw material supply manufacturer, and a subsequent equipment row is provided as a part processing manufacturer. A manufacturing facility row of members characterized by comprising.

4. The equipment supply line according to claim 1, wherein the equipment for supplying the lubricant is equipped with the equipment for supplying the lubricant, and if there are a plurality of equipment for the first lubricant application, A manufacturing facility row of members, characterized in that the row is provided in a part processing manufacturer.

In a steel pipe manufacturing method for manufacturing a steel pipe by cutting, forming, and welding a steel sheet, and further processing the steel pipe, the steel sheet is cut into a predetermined size, and the cut steel sheet is formed into an open pipe by sheet winding. A steel pipe manufactured by laser welding the butted portion of the formed open pipe, applying a processing lubricant to the welded steel pipe, and applying the lubricant to the steel pipe A method for producing a member, characterized by subjecting the material to bending or pressing, or subjecting it to hydroforming in the pipe to perform deformation processing.

8. The method of manufacturing a member according to claim 7, wherein when the processing method is hydroforming, after applying the lubricant, further pre-processing is performed, and then the lubricant is applied again as necessary. The manufacturing method of the member characterized by applying.

8. The method for manufacturing a member according to claim 7, wherein when the processing method is hydroforming, pre-processing is further performed after the laser welding.

10. The manufacturing method according to claim 7, wherein the process up to the cutting step is performed by a material supply manufacturer, and the subsequent steps are performed by a component processing manufacturer. Method.

10. The manufacturing method according to claim 7, wherein the laser welding process is performed by a raw material supply manufacturer, and the subsequent processes are performed by a component processing manufacturer. The manufacturing method of the member to do.

10. The manufacturing method according to claim 7, wherein when there are a plurality of steps of applying the lubricant, the steps up to the first lubricant application are performed by a material supply manufacturer, and the subsequent steps are performed for parts. A method for producing a member, characterized in that the method is performed by a processing maker.