JP2639295B2 - Manufacturing method of stainless welded H-section steel - Google Patents
Manufacturing method of stainless welded H-section steelInfo
- Publication number
- JP2639295B2 JP2639295B2 JP34864592A JP34864592A JP2639295B2 JP 2639295 B2 JP2639295 B2 JP 2639295B2 JP 34864592 A JP34864592 A JP 34864592A JP 34864592 A JP34864592 A JP 34864592A JP 2639295 B2 JP2639295 B2 JP 2639295B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- section steel
- welded
- flange
- stainless
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ウェブ材とフランジ材
とを抵抗溶接ラインで仮付け溶接をし、オフラインです
み肉溶接を行うステンレス溶接Ｈ形鋼の製造方法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a stainless steel welded H-section steel in which a web material and a flange material are tack-welded by a resistance welding line, and offline fillet welding is performed.
【０００２】[0002]
【従来の技術】従来のステンレス溶接Ｈ形鋼の製造方法
の代表例（特開平２−１５８７６号公報）を、図２を参
照して説明する。2. Description of the Related Art A typical example of a conventional method for producing a stainless welded H-section steel (JP-A-2-15876) will be described with reference to FIG.
【０００３】まず、厚板をガス切断によってウェブ材と
フランジ材とを成形し、オフラインに断続的に供給す
る。オフラインでウェブ材とフランジ材とを治具によっ
て仮組みし、次いで仮付け溶接を行う。さらに、固定治
具によって仮付け形鋼を固定した後、上下のフランジ材
と中央のウェブ材との接合部分のすみ肉溶接を行う。[0003] First, a thick plate is formed into a web material and a flange material by gas cutting, and intermittently supplied off-line. The web material and the flange material are temporarily assembled by a jig offline, and then the tack welding is performed. Furthermore, after fixing the tacked steel shape with a fixing jig, fillet welding is performed at the joint between the upper and lower flange members and the central web member.
【０００４】次に、通常の熱処理後、ロールによる矯
正、ショット・ブラスト、酸洗を行い出荷する。Then, after normal heat treatment, straightening by rolls, shot blasting, and pickling are performed before shipment.
【０００５】しかし、従来の方法では、厚板のガス切断
時に熱影響による長手方向の弓反り（いわゆるキャン
バ）が発生する。この素材を仮組み、仮付けするため
に、素材の抑え装置が素材の全長にわたって必要にな
る。また、この工程の全期間中、素材を抑えておく必要
があるために、形鋼としての寸法出し精度が劣る。However, in the conventional method, bowing in the longitudinal direction (so-called camber) occurs due to the influence of heat when cutting a thick plate with gas. In order to temporarily assemble and temporarily attach the material, a material holding device is required over the entire length of the material. In addition, since it is necessary to keep down the material during the entire period of this process, the dimensional accuracy as a shaped steel is inferior.
【０００６】さらに、仮付けが断続的であるため、長手
方向の仮付け部とそれ以外の溶込み量との差が顕著とな
り、後のすみ肉溶接速度の均一化やスピードアップが図
れない。[0006] Furthermore, since the tacking is intermittent, the difference between the tacked portion in the longitudinal direction and the amount of penetration other than that becomes remarkable, and it is not possible to make uniform the fillet welding speed later and increase the speed.
【０００７】また、すみ肉溶接後、長手方向の弓反りを
ロール矯正によって行う必要がある。After fillet welding, it is necessary to correct the bow in the longitudinal direction by roll straightening.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、素材の仮組
み、仮付け工程を連続化し、固定治具等を不要にし、後
のすみ肉溶接で予想される熱歪について予め逆方向に歪
を付与して製造工程の短縮を図ることを課題にしてい
る。SUMMARY OF THE INVENTION According to the present invention, a temporary assembling and tacking process of a material is made continuous, a fixing jig and the like are not required, and a thermal distortion expected in the subsequent fillet welding is previously distorted in a reverse direction. It is an object of the present invention to shorten the manufacturing process by imparting the following.
【０００９】[0009]
【課題を解決するための手段】本発明のステンレス溶接
Ｈ形鋼の製造方法は、ステンレス鋼帯コイルからウェブ
材とフランジ材とをそれぞれ連続して供給すること、抵
抗溶接ラインにおいて前記ウェブ材とフランジ材とを仮
付け溶接をすること、傘折れ反対方向に予歪を付与する
こと、所定の長さに切断後、オフラインにおいてすみ肉
溶接をすること、熱処理、ロール矯正、ショット・ブラ
スト、酸洗を行うことからなる手段によって、上記課題
を解決している。ここで、傘折れ方向とは仮付け溶接さ
れた溶接Ｈ形鋼のＨ形状横断面において、フランジ材と
ウェブ材との交点を中心としてフランジ材の両端部がウ
ェブ材側内方にたわむ方向をいう。また、この方向と反
対方向、すなわち、前記交点を中心としてフランジ材の
両端部がウェブ材の外側外方にたわむ方向を傘折れ反対
方向という。SUMMARY OF THE INVENTION According to the present invention, there is provided a method for manufacturing a stainless steel welded H-section steel, wherein a web material and a flange material are continuously supplied from a stainless steel strip coil, respectively. Temporary welding with flange material, applying prestrain in the opposite direction of umbrella breaking, cutting to a predetermined length, performing fillet welding offline, heat treatment, roll straightening, shot blasting, acid The above problem has been solved by means of washing. Here, the umbrella bending direction refers to the direction in which both ends of the flange material bend inward in the web material side around the intersection of the flange material and the web material in the H-shaped cross section of the temporarily welded H-beam. Say. A direction opposite to this direction, that is, a direction in which both ends of the flange material are bent outward and outward with respect to the intersection, is referred to as an umbrella bending opposite direction.
【００１０】本発明の方法は、Ｉ引張強度を６．０−１
０．０ｋｇ／ｍｍ2に設定した溶接条件で前記の仮付け
溶接をすることが好ましい。ここで、Ｉ引張強度とは、
フランジ材とウェブ材との交点の仮溶接部のウェブ材幅
方向の引張強度をいい、仮溶接部の接合強度を表す。[0010] The method of the present invention provides an I tensile strength of 6.0-1.
It is preferable to perform the above-mentioned tack welding under welding conditions set to 0.0 kg / mm 2 . Here, the I tensile strength is
It refers to the tensile strength in the web material width direction of the temporary weld at the intersection of the flange material and the web material, and represents the joining strength of the temporary weld.
【００１１】[0011]
【作用】従来法による厚板をガス切断した素材にくらべ
て、本発明法ではコイルから直接巻き解いたステンレス
鋼板を使用するので、切断面の平滑度は劣るが、ガス切
断熱による長手方向の曲がり（キャンバ）がない。According to the method of the present invention, a stainless steel sheet directly unwound from a coil is used in comparison with a material obtained by gas cutting a thick plate according to the conventional method. No bends (cambers).
【００１２】本発明法では、ロール等によって素材を案
内するので、特別の固定治具は不要になる。According to the method of the present invention, since the material is guided by a roll or the like, a special fixing jig is not required.
【００１３】ステンレス鋼帯が黒皮のままでは仮付けや
本溶接の溶接品質（内質および表面美麗）に悪影響を及
ぼし、溶接速度が極端に劣る場合には、酸洗のままのス
テンレス鋼帯を使用すればよい。[0013] If the stainless steel strip remains black scale, it adversely affects the welding quality (inner quality and surface beautifulness) of tacking and main welding, and if the welding speed is extremely poor, the stainless steel strip that has been pickled as is. Should be used.
【００１４】抵抗溶接のみでＨ形の本溶接を完了させて
しまうことは、鋼帯表面の酸化皮膜のために溶接部の完
全均一な溶込みを得ることができない。そこで、本溶接
までのハンドリングに耐える仮付け溶接を行う。When the H-shaped main welding is completed only by the resistance welding, it is not possible to obtain a completely uniform penetration of the welded portion due to the oxide film on the surface of the steel strip. Therefore, tack welding that withstands handling up to the main welding is performed.
【００１５】酸化皮膜の影響を排除するために、ウェブ
材のアップセット量を大きくすると、溶接部にギザギザ
状の溶接ビードが発生する。このビードはハンドリング
時に作業者が負傷する危険があり、また、ギザギザ状の
ビード上に本溶接を施しても、巣等の溶接欠陥が発生す
る。したがって、本溶接前に、ギザギザ状溶接ビードを
除去しなければならない。If the upset amount of the web material is increased in order to eliminate the influence of the oxide film, jagged weld beads are generated at the welded portion. There is a risk that an operator may be injured when handling this bead, and even if the main welding is performed on the jagged beads, welding defects such as nests will occur. Therefore, the jagged weld bead must be removed before the main welding.
【００１６】一方、アップセット量を小さくすると、ギ
ザギザ状溶接ビードは軽減されるが、フランジ材とウェ
ブ材とがハンドリング中に剥離する問題がある。On the other hand, when the upset amount is reduced, the jagged weld bead is reduced, but there is a problem that the flange material and the web material are separated during handling.
【００１７】本発明法では、仮付け溶接後のＨ形鋼のＩ
引張強度を６−１０ｋｇ／ｍｍ2 に管理することによっ
て、ギザギザ状ビードが発生せず、溶接部剥離も発生し
ない。In the method of the present invention, the I-shape of the H-beam after tack welding
By controlling the tensile strength to 6 to 10 kg / mm 2 , no jagged beads are generated and no peeling of the weld occurs.
【００１８】従来法のように断続的な仮付けではなく、
全長にわたる一定の均一な密着力のある仮付けであるた
め、長手方向の弓反りはより少ない。Instead of intermittent tacking as in the conventional method,
Longer bow bow is less due to the tack having a uniform and coherent force over the entire length.
【００１９】仮付け後、長さ切断前に、本溶接時のフラ
ンジ部の傘折れ角変形を予想して、予め反対方向に曲げ
る歪を付与しておく。このようにして、本溶接（すみ肉
溶接）後のロール矯正が連続して実施可能になる。After the tacking, and before cutting the length, a bend in the opposite direction is given in advance in anticipation of the umbrella bending angle deformation of the flange portion during the main welding. In this way, roll correction after main welding (fillet welding) can be continuously performed.
【００２０】[0020]
【実施例】図１を参照して、本発明のステンレス溶接Ｈ
形鋼の製造方法について説明する。本発明の製造方法
は、ステンレス鋼帯コイルからウェブ材とフランジ材と
をそれぞれ連続して供給すること、抵抗溶接ラインにお
いて前記ウェブ材とフランジ材とを仮付け溶接をするこ
と、傘折れ反対方向に予歪を付与すること、所定の長さ
に切断後、オフラインにおいてすみ肉溶接をすること、
熱処理、ロール矯正、ショット・ブラスト、酸洗を行う
ことからなる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG.
A method for manufacturing a section steel will be described. The production method of the present invention includes the steps of continuously supplying a web material and a flange material from a stainless steel strip coil, performing temporary tack welding of the web material and the flange material in a resistance welding line, Pre-straining, cutting to a predetermined length, and performing fillet welding off-line,
It consists of heat treatment, roll straightening, shot blasting and pickling.
【００２１】Ｉ引張強度を６．０−１０．０ｋｇ／ｍｍ
2 に設定した溶接条件で前記の仮付け溶接をすることが
好ましい。I: Tensile strength of 6.0-10.0 kg / mm
It is preferable to perform the above-mentioned tack welding under the welding conditions set to 2 .
【００２２】Ｉ引張強度を６．０−１０．０ｋｇ／ｍｍ
2 に管理できるか否かは、連続溶接後の製品の抜取り検
査をして判断する。溶接条件は、アップセット量、溶接
電流、溶接速度の組合せで決める。要するに、Ｉ引張強
度が６．０−１０．０ｋｇ／ｍｍ2 に管理できれば、そ
れらの組合せはいかなる条件でもよい。I Tensile strength is 6.0-10.0 kg / mm
Whether it can be managed to 2 or not is determined by sampling inspection of the product after continuous welding. The welding conditions are determined by a combination of the upset amount, welding current, and welding speed. In short, as long as the I tensile strength can be controlled to 6.0 to 10.0 kg / mm 2 , any combination of these conditions may be used.
【００２３】次に、本発明の製造方法の具体的実施例に
ついて説明する。Next, specific examples of the production method of the present invention will be described.
【００２４】仮付け溶接条件 （１）材料寸法：２００×１００×３．２×３．２（ｍ
ｍ） （２）鋼種：ＳＵＳ３０４、酸洗のまま （３）仮付け条件：高入熱・高アップセット、冷却水有
り、不完全シールド （４）仮付け結果： （５）考察：本溶接後の溶接品質を考えると、仮付け後
の最小限度の密着力は、６．０−１０．０ｋｇ／ｍｍ2
である。冷却水有り、普通のアップセット代、入熱条件
でよい。Tack welding conditions (1) Material dimensions: 200 × 100 × 3.2 × 3.2 (m
m) (2) Steel type: SUS304, pickled (3) Temporary mounting condition: high heat input / high upset, with cooling water, incomplete shielding (4) Temporary mounting result: (5) Consideration: Considering the welding quality after the main welding, the minimum adhesion after tacking is 6.0-10.0 kg / mm 2.
It is. With cooling water, ordinary upset fee and heat input conditions are sufficient.
【００２５】逆歪付与条件 逆歪量δ（ｍｍ）（図３の（Ａ）図参照）を０、０．
３、２のとき、傘折れ量δ’（ｍｍ）（図３の（Ｂ）図
参照）は３、１．３、０であった。したがって、逆歪量
δが２ｍｍのとき、傘折れ量δ’が０であるので、良好
であった。Conditions for imparting reverse distortion: The amount of reverse distortion δ (mm) (see FIG. 3A) is set to 0, 0.
At the time of 3, 2, the umbrella breaking amount δ ′ (mm) (see FIG. 3B) was 3, 1.3, 0. Therefore, when the inverse distortion amount δ was 2 mm, the umbrella breaking amount δ ′ was 0, which was favorable.
【００２６】すみ肉溶接条件 （１）素材寸法：１００×１００×６×８ ６．６ｋｇ／ｍｍ2 以下の密着力で仮付けした。Fillet Welding Conditions (1) Material size: 100 × 100 × 6 × 8 6.6 kg / mm 2 or less.
【００２７】（２）溶接条件：Ｈ形鋼をＣＯ2 ガスアー
ク溶接（２５０オングストローム−３０Ｖ−４３０ｍｍ
／分、１．２ｍｍ直径ワイヤ使用） （３）開先加工：のど厚７ｍｍ、脚長６ｍｍ、溶込み２
ｍｍ （４）本溶接結果： （５）考察：母材Ｔｓ＝５３ｋｇ／ｍｍ2 並のＩ引張強
度５２．９、５１．４ｋｇ／ｍｍ2 を得た。ビード形状
は仮付け時のビードを完全除去しないにもかかわらず、
ビード波形の不ぞろいおよび仮付け部の過剰肉盛りもな
く良好であった。開先加工をしてフランジとウェブとの
間に隙間がなく、完全溶込みを実現できる。(2) Welding conditions: H-section steel is CO 2 gas arc welded (250 Å-30 V-430 mm)
(3) Groove processing: Throat thickness 7 mm, leg length 6 mm, penetration 2
mm (4) Final welding result: (5) Consideration: I tensile strengths of 52.9 and 51.4 kg / mm 2 were obtained, which were equivalent to the base material Ts = 53 kg / mm 2 . Although the bead shape does not completely remove the bead when tacking,
The bead waveform was good, with no irregularities in the waveform and no excessive build-up at the tacked portion. There is no gap between the flange and the web by beveling, and complete penetration can be realized.
【００２８】[0028]
【発明の効果】本発明によれば、大幅な仮組み、仮付け
工数の削減と、本溶接の精度および能率の向上を図るこ
とができる。According to the present invention, it is possible to drastically reduce the number of temporary assembling and tacking steps and to improve the accuracy and efficiency of the main welding.
【図１】本発明のステンレス溶接Ｈ形鋼の製造方法のフ
ローチャートである。FIG. 1 is a flowchart of a method for producing a stainless welded H-section steel according to the present invention.
【図２】従来のステンレス溶接Ｈ形鋼の製造方法のフロ
ーチャートである。FIG. 2 is a flowchart of a conventional method for producing a stainless welded H-section steel.
【図３】ステンレス溶接Ｈ形鋼の逆歪量（Ａ）と傘折れ
量（Ｂ）とを示す説明図である。FIG. 3 is an explanatory diagram showing a reverse strain amount (A) and an umbrella breaking amount (B) of a stainless steel welded H-section steel.
Claims (2)
ランジ材とをそれぞれ連続して供給すること、抵抗溶接
ラインにおいて前記ウェブ材とフランジ材とを仮付け溶
接をすること、傘折れ反対方向に予歪を付与すること、
所定の長さに切断後、オフラインにおいてすみ肉溶接を
すること、熱処理、ロール矯正、ショット・ブラスト、
酸洗を行うことからなるステンレス溶接Ｈ形鋼の製造方
法。1. A web material and a flange material are continuously supplied from a stainless steel strip coil, respectively, a temporary welding of the web material and a flange material is performed in a resistance welding line, Imparting distortion,
After cutting to the specified length, fillet welding offline, heat treatment, roll straightening, shot blasting,
A method for producing a stainless welded H-section steel comprising pickling.
ｍ2 に設定した溶接条件で前記の仮付け溶接をすること
を特徴とした請求項１記載の方法。2. An I tensile strength of 6.0-10.0 kg / m.
The method of claim 1 wherein characterized in that in the welding conditions set in m 2 to the tack welding of the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34864592A JP2639295B2 (en) | 1992-12-28 | 1992-12-28 | Manufacturing method of stainless welded H-section steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34864592A JP2639295B2 (en) | 1992-12-28 | 1992-12-28 | Manufacturing method of stainless welded H-section steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06198435A JPH06198435A (en) | 1994-07-19 |
| JP2639295B2 true JP2639295B2 (en) | 1997-08-06 |
Family
ID=18398396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34864592A Expired - Lifetime JP2639295B2 (en) | 1992-12-28 | 1992-12-28 | Manufacturing method of stainless welded H-section steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2639295B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4754780B2 (en) * | 2003-11-28 | 2011-08-24 | 日本冶金工業株式会社 | Metal plate welding method |
| JP2011011246A (en) * | 2009-07-03 | 2011-01-20 | Sumitomo Metal Ind Ltd | Welded h-section steel and manufacturing method therefor |
| CN113369806A (en) * | 2021-05-27 | 2021-09-10 | 泰兴市聚峰压延科技有限公司 | Production process of large-span assembled profile steel for Bailey bridge |
-
1992
- 1992-12-28 JP JP34864592A patent/JP2639295B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06198435A (en) | 1994-07-19 |
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