JP2010017751A - Method for manufacturing shape steel - Google Patents

Method for manufacturing shape steel Download PDF

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JP2010017751A
JP2010017751A JP2008181967A JP2008181967A JP2010017751A JP 2010017751 A JP2010017751 A JP 2010017751A JP 2008181967 A JP2008181967 A JP 2008181967A JP 2008181967 A JP2008181967 A JP 2008181967A JP 2010017751 A JP2010017751 A JP 2010017751A
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flange
shape
shape steel
steel material
web
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Ryo Matsuoka
諒 松岡
Masakichi Tanaka
政吉 田中
Yoshifumi Yamagata
良文 山縣
Setsuya Okuma
接也 大熊
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JFE Steel Corp
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JFE Steel Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a shape steel, capable of inhibiting the flange portion of a shape steel stock from being bent toward the inside of the web in a finish rolling step. <P>SOLUTION: The shape steel stock is hot-rolled into a predetermined shape through a rough rolling mill and an intermediate rolling mill. When finish-rolling the hot-rolled shape steel stock with a pair of upper and lower horizontal rolls 15, 15 and a pair of right and left vertical rolls 16, 16 to manufacture a shape steel having flanges on both edges in the width-direction of the web, the shape steel stock is finish-rolled while rolling oil 17 is fed to side surfaces 15a of the horizontal rolls 15, 15. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、Ｈ形鋼やＩ形鋼のようにウェブの幅方向両端部にフランジを有する形鋼の製造方法に関するものである。   The present invention relates to a method of manufacturing a section steel having flanges at both ends in the width direction of the web, such as H-section steel and I-section steel.

ウェブの幅方向両端部にフランジを有する形鋼、例えばＨ形鋼は、通常、粗圧延機および中間圧延機により所定の形状に熱間圧延されたＨ形鋼素材を上下一対の水平ロールと左右一対の垂直ロールとにより仕上げ圧延することにより、所望の製品寸法とフランジ直角度を有するＨ形鋼として製造される。そして、このようにして製造されるＨ形鋼の仕上げ圧延工程では、中間圧延機により図４に示す形状に圧延されたＨ形鋼素材１１を製品サイズに応じてウェブ１２の幅が拡大する方向や縮小する方向に仕上げ圧延しているため、仕上げ圧延されたＨ形鋼素材１１のフランジ１３が図５に示す形状（ウェブ１２の外側に折れ曲がった形状）になったり、あるいは図６に示す形状（ウェブ１２の内側に折れ曲がった形状）になったりすることがある。特に、Ｈ形鋼素材１１をウェブ１２の幅が縮小する方向に仕上げ圧延すると、図７に示すように、フランジ１３がウェブ１２の内側に折れ曲がった形状になる割合が高く、また、図８に示すように、Ｈ形鋼素材のフランジ温度が高いほどフランジ１３がウェブ１２の内側に折れ曲がりやすい。   Shaped steels having flanges at both ends in the width direction of the web, for example, H-shaped steels, are typically H-shaped steel materials hot rolled into a predetermined shape by a roughing mill and an intermediate rolling mill with a pair of upper and lower horizontal rolls and left and right By finishing and rolling with a pair of vertical rolls, it is manufactured as an H-shaped steel having a desired product size and flange perpendicularity. And in the finish rolling process of the H-section steel manufactured in this way, the direction in which the width of the web 12 is expanded according to the product size of the H-section steel material 11 rolled into the shape shown in FIG. 4 by an intermediate rolling mill. Since it is finish-rolled in the direction of shrinking, the flange 13 of the finish-rolled H-section steel material 11 has the shape shown in FIG. 5 (the shape bent to the outside of the web 12), or the shape shown in FIG. (The shape bent inside the web 12). In particular, when the H-shaped steel material 11 is finish-rolled in the direction in which the width of the web 12 is reduced, as shown in FIG. 7, the ratio of the flange 13 being bent to the inside of the web 12 is high. As shown, the flange 13 is more easily bent inside the web 12 as the flange temperature of the H-shaped steel material is higher.

このため、ウェブ１２に対するフランジ１３の直角度が許容範囲から外れてしまうことがあり、仕上げ圧延後のフランジ１３がウェブ１２の外側に大きく折れ曲がってフランジ１３の直角度が許容範囲から外れている場合には、フランジ１３の外側面に矯正ローラを押し当てて仕上げ圧延後のフランジ形状を矯正している。
しかし、仕上げ圧延後のフランジ１３がウェブ１２の内側に大きく折れ曲がってフランジ１３の直角度が許容範囲から外れている場合には、フランジの外側面中央部にガス焼きを施してフランジ形状をウェブの外側に折れ曲がった形状に戻した後、フランジ１３の外側面に矯正ローラを押し当てて仕上げ圧延後のフランジ形状を矯正している。このため、従来においては、仕上げ圧延後のフランジ形状がウェブの内側に大きく折れ曲がっている場合には、フランジ形状の矯正に多くの手間と時間を要し、製造コストの上昇を招いていた。 For this reason, the perpendicularity of the flange 13 with respect to the web 12 may deviate from the allowable range, and the flange 13 after finish rolling is greatly bent to the outside of the web 12 so that the perpendicularity of the flange 13 is out of the allowable range. In other words, the correcting roller is pressed against the outer surface of the flange 13 to correct the flange shape after finish rolling.
However, when the flange 13 after the finish rolling is bent greatly inside the web 12 and the perpendicularity of the flange 13 is out of the allowable range, the center of the outer surface of the flange is subjected to gas baking to change the flange shape of the web. After returning to the outer bent shape, the correction roller is pressed against the outer surface of the flange 13 to correct the flange shape after finish rolling. For this reason, conventionally, when the flange shape after finish rolling is bent greatly inside the web, it takes a lot of labor and time to correct the flange shape, leading to an increase in manufacturing cost.

ところで、ユニバーサルミルのロール傾き角度に起因するフランジ反りを抑制する方法として、最終仕上げ圧延における形鋼のフランジ温度を、形鋼の種類およびサイズによって決定する設定温度に対して±２５℃の範囲に調整することによって、フランジの反り量を制御する方法が知られている（特許文献１参照）。
特開平７−３２３３２０号公報 By the way, as a method of suppressing the flange warp caused by the roll tilt angle of the universal mill, the flange temperature of the shape steel in the final finish rolling is in a range of ± 25 ° C. with respect to the set temperature determined by the type and size of the shape steel. A method is known in which the amount of warpage of the flange is controlled by adjustment (see Patent Document 1).
JP 7-323320 A

しかしながら、図９に示すように、素材の先端側と後端側との間には温度差があり、また、フランジの中央部側と端部側との間にも温度差があるため、特許文献１に記載された方法のように、最終仕上げ圧延における形鋼のフランジ温度を設定温度に対して±２５℃の範囲に調整することは実際には困難である。
本発明は上述した事情に鑑みてなされたものであって、仕上げ圧延時に形鋼素材のフランジ形状がウェブの内側に折れ曲がった形状になることを抑制することのできる形鋼の製造方法を提供することを目的とするものである。 However, as shown in FIG. 9, there is a temperature difference between the front end side and the rear end side of the material, and there is also a temperature difference between the center side and the end side of the flange. As in the method described in Document 1, it is actually difficult to adjust the flange temperature of the shape steel in the final finish rolling to a range of ± 25 ° C. with respect to the set temperature.
The present invention has been made in view of the above-described circumstances, and provides a method for manufacturing a shape steel capable of suppressing the flange shape of the shape steel material from being bent inside the web during finish rolling. It is for the purpose.

上記課題を解決するため、本発明者らは、仕上げ圧延時に形鋼素材のフランジ形状がウェブの内側に折れ曲がった形状になる原因について鋭意検討した。その結果、仕上げ圧延時に形鋼素材のフランジが水平ロールによりウェブ側に大きく擦り下げられることによって、形鋼素材のフランジ形状がウェブの内側に折れ曲がった形状になるという知見を得た。
また、形鋼素材を仕上げ圧延したときの仕上げ圧延機出側温度と形鋼素材のフランジ折れ曲がり量との関係を調べた結果、図８に示したように、フランジ外面中央部で測定した仕上げ圧延機出側温度が７００℃より高くなると、仕上げ圧延時に形鋼素材のフランジ形状がウェブの内側に折れ曲がった形状になりやすいという知見を得た。 In order to solve the above-mentioned problems, the present inventors diligently studied the cause of the flange shape of the shaped steel material being bent inside the web during finish rolling. As a result, it was found that the flange shape of the shape steel material is bent to the inside of the web when the flange of the shape steel material is greatly rubbed down to the web side by a horizontal roll during finish rolling.
In addition, as a result of investigating the relationship between the finish rolling mill exit temperature when the shape steel material was finish-rolled and the flange bending amount of the shape steel material, as shown in FIG. 8, the finish rolling measured at the center of the flange outer surface It has been found that when the machine exit side temperature is higher than 700 ° C., the flange shape of the shaped steel material tends to be bent inside the web during finish rolling.

請求項１記載の発明に係る形鋼の製造方法は、上記の知見に基づいてなされたものであり、粗圧延機および中間圧延機により所定の形状に熱間圧延された形鋼素材を上下一対の水平ロールと左右一対の垂直ロールとにより仕上げ圧延してウェブの幅方向両端部にフランジを有する形鋼を製造するに際して、前記水平ロールの側面に潤滑剤を付与して前記形鋼素材を仕上げ圧延することにより、フランジ直角度を調整することを特徴とするものである。
請求項２記載の発明に係る形鋼の製造方法は、請求項１記載の形鋼の製造方法において、前記形鋼素材のフィレット部と接触する部位を除いた水平ロールの側面に潤滑剤を付与して前記形鋼素材を仕上げ圧延することを特徴とするものである。 The method for producing a shape steel according to the invention of claim 1 is based on the above knowledge, and a pair of upper and lower shape steel materials hot rolled into a predetermined shape by a rough rolling mill and an intermediate rolling mill. When a shape steel having flanges at both ends in the width direction of the web is manufactured by finish rolling with a horizontal roll and a pair of left and right vertical rolls, a lubricant is applied to the sides of the horizontal roll to finish the shape steel material. The flange perpendicularity is adjusted by rolling.
The method for manufacturing a section steel according to the invention described in claim 2 is the method for manufacturing a section steel according to claim 1, wherein a lubricant is applied to the side surface of the horizontal roll excluding a portion in contact with the fillet portion of the shape steel material. Then, the shape steel material is finish-rolled.

請求項１記載の発明に係る形鋼の製造方法によると、仕上げ圧延時に形鋼素材のフランジと水平ロールの側面との間に発生する摩擦力が水平ロールの側面に付与された圧延油によって小さくなり、これにより、形鋼素材のフランジが水平ロールによりウェブ側に大きく擦り下げられることがない。したがって、仕上げ圧延時に形鋼素材のフランジ形状がウェブの内側に折れ曲がった形状になることを抑制することができる。   According to the method for manufacturing a shape steel according to the first aspect of the present invention, the frictional force generated between the flange of the shape steel material and the side surface of the horizontal roll during finish rolling is reduced by the rolling oil applied to the side surface of the horizontal roll. Thus, the flange of the shaped steel material is not greatly scraped to the web side by the horizontal roll. Therefore, it can suppress that the flange shape of a shape steel raw material turns into the shape bent inside the web at the time of finish rolling.

請求項２記載の発明に係る形鋼の製造方法によると、水平ロールの側面に付与された潤滑剤が形鋼素材のフィレット部に付着することによって形鋼素材のフィレット部と水平ロールの側面との間に発生する摩擦力が小さくなってフィレット部の余肉がフランジ幅方向に多く流れるということがないので、形鋼素材を所望の製品サイズに安定して仕上げ圧延することができる。   According to the method for manufacturing a shaped steel according to the invention described in claim 2, the lubricant applied to the side surface of the horizontal roll adheres to the fillet portion of the shaped steel material, so that the fillet portion of the shaped steel material and the side surface of the horizontal roll Since the frictional force generated during the period is small and the surplus fillet portion does not flow in the flange width direction, the shape steel material can be stably finish-rolled to a desired product size.

本発明に係る形鋼の製造方法をＨ形鋼の製造方法に適用した一実施形態を図１及び図２に示す。図１に示されるように、本発明の一実施形態は、粗圧延機および中間圧延機により所定の形状に熱間圧延されたＨ形鋼素材１１を上下一対の水平ロール１５，１５と左右一対の垂直ロール１６，１６とにより仕上げ圧延してＨ形鋼を製造するに際して、水平ロール１５，１５の側面１５ａに潤滑剤としての圧延油１７を不図示の圧延油噴射ノズルから付与してＨ形鋼素材１１を仕上げ圧延するものである。   FIG. 1 and FIG. 2 show an embodiment in which the method for producing a shaped steel according to the present invention is applied to a method for producing an H-shaped steel. As shown in FIG. 1, in one embodiment of the present invention, an H-section steel material 11 hot-rolled into a predetermined shape by a roughing mill and an intermediate rolling mill is paired with a pair of upper and lower horizontal rolls 15 and 15 and a pair of left and right. When the H-shaped steel is manufactured by finish rolling with the vertical rolls 16, 16, rolling oil 17 as a lubricant is applied to the side surface 15 a of the horizontal rolls 15, 15 from a rolling oil injection nozzle (not shown) to form an H shape. The steel material 11 is finish-rolled.

ここで、圧延油１７が付与される箇所は、図２に示すように、Ｈ形鋼素材１１のフィレット部１４と接触する部位を除いた水平ロール１５の側面１５ａであることが好ましい。また、水平ロール１５の側面１５ａに付与される圧延油１７としては、サルファ（硫黄）等の添加剤が添加されているものが好ましい。
上述のように、水平ロール１５の側面１５ａに圧延油１７を付与すると、Ｈ形鋼素材１１のフランジ１３と水平ロール１５の側面１５ａとの間に発生する摩擦力が水平ロール１５の側面１５ａに付与された圧延油１７によって小さくなり、これにより、Ｈ形鋼素材１１のフランジ１３が水平ロール１５によりウェブ側に大きく擦り下げられることがない。したがって、仕上げ圧延時にＨ形鋼素材１１のフランジ形状がウェブ１２の内側に折れ曲がった形状になることを抑制することができる。 Here, as shown in FIG. 2, the portion to which the rolling oil 17 is applied is preferably a side surface 15 a of the horizontal roll 15 excluding a portion that contacts the fillet portion 14 of the H-section steel material 11. Moreover, as the rolling oil 17 provided to the side surface 15a of the horizontal roll 15, what added additives, such as sulfur (sulfur), is preferable.
As described above, when the rolling oil 17 is applied to the side surface 15 a of the horizontal roll 15, the frictional force generated between the flange 13 of the H-shaped steel material 11 and the side surface 15 a of the horizontal roll 15 is applied to the side surface 15 a of the horizontal roll 15. Due to the applied rolling oil 17, the flange 13 of the H-shaped steel material 11 is not greatly scraped down to the web side by the horizontal roll 15. Therefore, it is possible to suppress the flange shape of the H-shaped steel material 11 from being bent inside the web 12 during finish rolling.

また、水平ロール１５の側面１５ａに付与された圧延油１７がＨ形鋼素材１１のフィレット部（ウェブ１２とフランジ１３との交差部付近）１４と接触する部位に付着すると、Ｈ形鋼素材１１のフィレット部１４と水平ロール側面１５ａとの間に発生する摩擦力が小さくなり、Ｈ形鋼素材１１のフィレット部１４に付いた余肉がフランジ１３側に多く流れ、所望の製品サイズよりもウェブが小さく、フランジ幅が大きく製品が出来上がるという不具合が生じる場合がある。これに対し、図２に示すように、Ｈ形鋼素材１１のフィレット部１４と接触する部位を除いた水平ロール１５の側面１５ａに圧延油１７を付与すると、Ｈ形鋼素材１１のフィレット部１４と水平ロール１５の側面１５ａとの間に発生する摩擦力が小さくなることがないので、Ｈ形鋼素材１１を所望の製品サイズに安定して仕上げ圧延することができる。   Further, when the rolling oil 17 applied to the side surface 15 a of the horizontal roll 15 adheres to a portion that contacts the fillet portion (near the intersection between the web 12 and the flange 13) 14 of the H-shaped steel material 11, the H-shaped steel material 11. The friction force generated between the fillet portion 14 and the horizontal roll side surface 15a is reduced, so that the surplus wall attached to the fillet portion 14 of the H-shaped steel material 11 flows toward the flange 13 and the web is larger than the desired product size. There is a case that the product is completed with a small flange and a wide flange width. On the other hand, as shown in FIG. 2, when rolling oil 17 is applied to the side surface 15 a of the horizontal roll 15 excluding a portion that contacts the fillet portion 14 of the H-section steel material 11, the fillet portion 14 of the H-section steel material 11. Since the frictional force generated between the horizontal roll 15 and the side surface 15a of the horizontal roll 15 is not reduced, the H-section steel material 11 can be stably finish-rolled to a desired product size.

［実施例]
Ｈ形鋼素材の仕上げ圧延時に水平ロールの側面に圧延油を付与した場合と付与しなかった場合におけるフランジの折れ曲がり量を下記の条件１で調べた結果を図３に示す。
（条件１）
圧延油組成：エステル、石油系炭化水素、脂肪酸、極圧添加剤で構成
圧延油濃度：０．５％
圧延油供給量：四箇所合計で１．０Ｌ／ｍｉｎ
圧延油供給範囲：Ｈ形鋼素材の先端から長手方向３５ｍ
圧延油供給位置：Ｈ形鋼素材のフィレット部と接触する部位を除いた水平ロール側面 [Example]
FIG. 3 shows the results of examining the bending amount of the flange under the following condition 1 when the rolling oil is applied to the side surface of the horizontal roll during finish rolling of the H-shaped steel material and when it is not applied.
(Condition 1)
Rolling oil composition: Consists of ester, petroleum hydrocarbon, fatty acid, extreme pressure additive Rolling oil concentration: 0.5%
Rolling oil supply amount: 1.0 L / min in total at four locations
Rolling oil supply range: 35 m in the longitudinal direction from the tip of the H-shaped steel material
Rolling oil supply position: Horizontal roll side surface excluding the part in contact with the fillet part of the H-section steel material

図３に示されるように、水平ロールの側面に圧延油を付与しなかった場合は、温度の高い素材先端側でＨ形鋼素材のフランジがウェブの内側に折れ曲がりやすくなるのに対し、水平ロールの側面に圧延油を付与した場合はＨ形鋼素材のフランジがウェブの内側に折れ曲がり難くなることがわかる。
したがって、粗圧延機および中間圧延機により所定の形状に熱間圧延されたＨ形鋼素材を上下一対の水平ロールと左右一対の垂直ロールとにより仕上げ圧延してＨ形鋼を製造するに際して、水平ロールの側面に圧延油等の潤滑剤を付与してＨ形鋼素材を仕上げ圧延することにより、仕上げ圧延時にＨ形鋼素材のフランジ形状がウェブの内側に折れ曲がった形状になることを抑制することができる。 As shown in FIG. 3, when the rolling oil is not applied to the side surface of the horizontal roll, the flange of the H-shaped steel material tends to bend to the inside of the web on the leading end side of the high temperature material, whereas the horizontal roll It can be seen that when the rolling oil is applied to the side surface, the flange of the H-shaped steel material is difficult to bend inside the web.
Accordingly, when producing H-section steel by finish rolling the H-section steel material hot rolled into a predetermined shape by a rough rolling mill and an intermediate rolling mill with a pair of upper and lower horizontal rolls and a pair of left and right vertical rolls, By applying a lubricant such as rolling oil to the side of the roll and finish rolling the H-section steel material, the flange shape of the H-section steel material is prevented from being bent inside the web during finish rolling. Can do.

なお、本発明は図１に示した一実施形態に限られるものではない。例えば、先行材の仕上がりフランジ形状からフランジがウェブ内側に折れ曲がっている箇所を検知し、その検知結果から後行材のフランジがウェブ内側に折れ曲がりそうな箇所を予測し、予測した箇所のみに圧延油が付着するように水平ロールの側面に圧延油を自動的に付与するようにしてもよい。   The present invention is not limited to the embodiment shown in FIG. For example, the part where the flange is bent inside the web is detected from the finished flange shape of the preceding material, the part where the flange of the succeeding material is likely to be bent inside the web is predicted from the detection result, and the rolling oil is applied only to the predicted part. You may make it apply rolling oil automatically to the side of a horizontal roll so that may adhere.

また、Ｈ形鋼素材を仕上げ圧延する直前の素材長手方向の温度分布を測定し、温度の高い箇所に圧延油が付着するように水平ロールの側面に圧延油を自動的に付与するようにしてもよい。
また、図１及び図２に示した本発明の一実施形態では本発明をＨ形鋼の製造方法に適用した場合を例示したが、これに限られるものではなく、例えばＩ形鋼の製造方法にも適用できることは言うまでもない。 In addition, the temperature distribution in the longitudinal direction of the material immediately before finish rolling the H-shaped steel material is measured, and the rolling oil is automatically applied to the side surface of the horizontal roll so that the rolling oil adheres to the hot part. Also good.
Moreover, although the case where this invention was applied to the manufacturing method of H-section steel was illustrated in one Embodiment of this invention shown in FIG.1 and FIG.2, it is not restricted to this, For example, the manufacturing method of I-section steel Needless to say, it can also be applied.

本発明に係る形鋼の製造方法をＨ形鋼の製造方法に適用した一実施形態を示す図である。It is a figure which shows one Embodiment which applied the manufacturing method of the shaped steel which concerns on this invention to the manufacturing method of H-section steel. 水平ロールの側面に圧延油が付与される箇所を拡大して示す図である。It is a figure which expands and shows the location where rolling oil is provided to the side surface of a horizontal roll. Ｈ形鋼素材を仕上げ圧延したときに生じるフランジの折れ曲がり量とＨ形鋼素材長手方向との関係を示す図である。It is a figure which shows the relationship between the amount of bending of the flange which arises when a H-section steel raw material is finish-rolled, and a H-section steel raw material longitudinal direction. 中間圧延機から出たＨ形鋼素材の断面形状を示す図である。It is a figure which shows the cross-sectional shape of the H-section steel raw material which came out of the intermediate rolling mill. Ｈ形鋼素材の仕上げ圧延時にＨ形鋼素材のフランジがウェブ外側に折れ曲がった状態を示す図である。It is a figure which shows the state by which the flange of the H-section steel material was bent outside the web at the time of finish rolling of the H-section steel material. Ｈ形鋼素材の仕上げ圧延時にＨ形鋼素材のフランジがウェブ内側に折れ曲がった状態を示す図である。It is a figure which shows the state by which the flange of the H-section steel material was bent inside the web at the time of finish rolling of the H-section steel material. ウェブ幅方向の仕上げ圧延量とウェブ内側へのフランジ折れ曲がり発生割合との関係を示す図である。It is a figure which shows the relationship between the finishing rolling amount of a web width direction, and the flange bending generation | occurrence | production ratio to a web inner side. 仕上げ圧延機出側温度とフランジ折れ曲がり量との関係を示す図である。It is a figure which shows the relationship between finish rolling mill delivery side temperature and flange bending amount. Ｈ形鋼素材の長手方向温度分布を示す図である。It is a figure which shows the longitudinal direction temperature distribution of a H-shaped steel raw material.

符号の説明Explanation of symbols

１１ Ｈ形鋼素材
１２ ウェブ
１３ フランジ
１４ フィレット
１５ 水平ロール
１６ 垂直ロール
１７ 圧延油 11 H-shaped steel material 12 Web 13 Flange 14 Fillet 15 Horizontal roll 16 Vertical roll 17 Rolling oil

Claims (2)

粗圧延機および中間圧延機により所定の形状に熱間圧延された形鋼素材を上下一対の水平ロールと左右一対の垂直ロールとにより仕上げ圧延してウェブの幅方向両端部にフランジを有する形鋼を製造するに際して、前記水平ロールの側面に潤滑剤を付与して前記形鋼素材を仕上げ圧延することにより、フランジ直角度を調整することを特徴とする形鋼の製造方法。   A shape steel having flanges at both ends in the width direction of the web by finish rolling a shape steel material hot rolled into a predetermined shape by a rough rolling mill and an intermediate rolling mill with a pair of upper and lower horizontal rolls and a pair of left and right vertical rolls. In manufacturing the shape steel, the flange squareness is adjusted by applying a lubricant to the side surface of the horizontal roll and finish rolling the shape steel material. 前記形鋼素材のフィレット部と接触する部位を除いた水平ロールの側面に潤滑剤を付与して前記形鋼素材を仕上げ圧延することを特徴とする請求項１記載の形鋼の製造方法。   2. The method for producing a shape steel according to claim 1, wherein the shape steel material is finish-rolled by applying a lubricant to a side surface of a horizontal roll excluding a portion in contact with the fillet portion of the shape steel material.
JP2008181967A 2008-07-11 2008-07-11 Method for manufacturing shape steel Pending JP2010017751A (en)

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CN102773260A (en) * 2011-05-12 2012-11-14 攀钢集团有限公司 Method for rolling steel rail by universal rolling mill
JP2016203239A (en) * 2015-04-28 2016-12-08 Ｊｆｅスチール株式会社 Temperature correction device and temperature correction method of long-length steel material, cooling device and cooling method of long-length steel material, and manufacturing equipment and manufacturing method of rail
CN108332692A (en) * 2017-12-11 2018-07-27 天津智源机械制造股份有限公司 A kind of automatic pole clamping fixture for correcting
CN115092790A (en) * 2022-08-24 2022-09-23 浙江保利电梯导轨制造有限公司 Elevator guide rail connecting and positioning structure and assembly forming process thereof

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JPH05237501A (en) * 1992-01-31 1993-09-17 Nippon Steel Corp Universal rolling method for shape steel having flanges
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102773260A (en) * 2011-05-12 2012-11-14 攀钢集团有限公司 Method for rolling steel rail by universal rolling mill
JP2016203239A (en) * 2015-04-28 2016-12-08 Ｊｆｅスチール株式会社 Temperature correction device and temperature correction method of long-length steel material, cooling device and cooling method of long-length steel material, and manufacturing equipment and manufacturing method of rail
CN108332692A (en) * 2017-12-11 2018-07-27 天津智源机械制造股份有限公司 A kind of automatic pole clamping fixture for correcting
CN115092790A (en) * 2022-08-24 2022-09-23 浙江保利电梯导轨制造有限公司 Elevator guide rail connecting and positioning structure and assembly forming process thereof

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