JPS5819361B2 - Manufacturing method of rough shaped steel billet - Google Patents
Manufacturing method of rough shaped steel billetInfo
- Publication number
- JPS5819361B2 JPS5819361B2 JP9726975A JP9726975A JPS5819361B2 JP S5819361 B2 JPS5819361 B2 JP S5819361B2 JP 9726975 A JP9726975 A JP 9726975A JP 9726975 A JP9726975 A JP 9726975A JP S5819361 B2 JPS5819361 B2 JP S5819361B2
- Authority
- JP
- Japan
- Prior art keywords
- shaped steel
- rough
- flange
- rolling
- roll
- 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
Links
Landscapes
- Metal Rolling (AREA)
Description
【発明の詳細な説明】
本発明は主としてH形もしくはT形鋼および鋼矢板など
の形鋼用粗形鋼片を製造する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a method for producing rough shaped steel pieces for shaped steel such as H-shaped or T-shaped steel and steel sheet piles.
周知の通り一般にH形鋼および■形鋼や鋼矢板などを圧
延方法によって製造するには、角形鋼塊を方形もしくは
矩形断面のブルームあるいはスラブまたは粗形鋼片に分
塊圧延したのち粗および仕上圧延する工程が採用されて
おり、また連続鋳造によってブルームあるいはスラブも
しくは粗形鋼片を直接鋳造するネ段も採用されるように
なった。As is well known, in order to manufacture H-shaped steel, ■-shaped steel, steel sheet piles, etc. by the rolling method, a square steel ingot is bloomed or slabbed with a square or rectangular cross section, or a rough shaped steel slab is rolled, and then roughened and finished. A rolling process was adopted, and a continuous casting process, in which blooms, slabs, or rough-shaped steel pieces were directly cast, was also adopted.
ところで近時フランジ幅の広い大断面積のH形鋼の需要
が多くなったことや−たん粗形鋼片にして冷却し冷間庶
子入れする工程が熱的に極めて損失が大きいため、鋼塊
から製品まで通して一気に熱間圧延する手段が採用され
るようになったことから、周知の粗形鋼片製造方法では
次のような問題点が生ずるようになった。By the way, recently there has been an increase in demand for H-beam steel with a wide flange width and a large cross-sectional area, and the process of converting it into a rough-shaped steel billet, cooling it, and inserting it into a cold casing has an extremely large thermal loss. Since the method of hot rolling all at once from steel to finished product has been adopted, the following problems have arisen in the well-known method for producing rough-shaped steel billets.
(1) 周知の分塊圧延による製造方法は第1図に示
すように角形鋼塊1を上ロール2、下ロール3からなる
水平ミルでウェブ圧下を主体に行ない鋼塊1を被圧延材
aのように圧延し、同様にして逐次ロール組γ−3′、
2“〜3“、2″′〜3′″で粗形鋼片dに仕上げる訳
であるが、第1図から明らかなようにかかる圧延法では
フランジの幅方向の延びがないので、フランジ幅の広い
粗形鋼片(最終的には製品)を得るためには厚みの大き
い鋼塊が必要になる。(1) As shown in Fig. 1, the well-known production method by blooming rolling mainly performs web rolling of a rectangular steel ingot 1 in a horizontal mill consisting of an upper roll 2 and a lower roll 3. Roll as follows, and in the same way sequentially roll sets γ-3',
2" to 3" and 2"' to 3'" to form a rough-shaped steel piece d, but as is clear from Fig. 1, in this rolling method, there is no elongation in the width direction of the flange, so the flange width In order to obtain a large rough shape slab (ultimately a product), a thick steel ingot is required.
このため鋼塊1から粗形鋼片dを得るにはパス回数が多
くなり分塊能力が低くなる。Therefore, in order to obtain the rough-shaped steel billet d from the steel ingot 1, the number of passes is increased, and the blooming ability is reduced.
また分塊能率が良いブルームまたはスラブを分塊工程で
製造し、粗圧延工程で粗形鋼片を得る場合は第4図アに
示す矩形鋼片4(これは矩形鋼塊であってもよく、それ
を含めて以下単に矩形鋼片と云う)のフランジ相当側面
5の巾fは第4図イの粗形鋼片6のフランジ幅gより必
ず大きくなければならず、フランジ幅の広い粗形鋼片を
製造するには厚い鋼片を加熱せねばならない。In addition, when producing a bloom or slab with good blooming efficiency in the blooming process and obtaining a rough shaped steel slab in the rough rolling process, the rectangular steel slab 4 shown in Figure 4A (this may also be a rectangular steel ingot) is used. The width f of the flange-equivalent side surface 5 of the flange-equivalent side surface 5 of the rectangular steel piece (hereinafter simply referred to as a rectangular steel piece) must be larger than the flange width g of the rough-shaped steel piece 6 in Fig. 4 A, and the rough shape with a wide flange width To produce billets, thick billets must be heated.
そのため加熱炉での加熱時間が長くなるのみならず圧延
パス回数が増加して、圧延能率が著しく低下する。Therefore, not only does the heating time in the heating furnace become longer, but the number of rolling passes also increases, resulting in a significant reduction in rolling efficiency.
(2)前述のように鋼塊から製品まで途中冷却すること
なく熱間圧延する場合、特に既設の設備では前項(1)
の事情も加わって粗形鋼片化するまでの工程に時間がか
かりすぎて後工程での粗および仕上圧延との能力的アン
バランスを生じやすく、生産性があがらないという問題
がある。(2) As mentioned above, when hot rolling is carried out from a steel ingot to a product without intermediate cooling, especially in the case of existing equipment, the above (1)
In addition to this, the process of forming rough shaped billets takes too much time, which tends to cause an imbalance in capacity between rough and finish rolling in the subsequent process, resulting in a problem that productivity does not improve.
(3)連続鋳造によってフランジ幅の広い粗形鋼片をつ
くることは鋳型の熱歪や鋳造欠陥が発生しやすいこと、
およびフランジ部の鍛錬不足を招きやすいことなどの問
題が残る。(3) Making rough shaped steel pieces with wide flanges by continuous casting tends to cause mold thermal distortion and casting defects;
Also, problems remain, such as the fact that the flange part is likely to be insufficiently trained.
本発明は前述のような問題点のない能率的な粗形鋼片の
製造方法の提供を目的とするものでその要旨は、中央膨
出部を中心として対称の溝部からなる抑圧面を有するロ
ール対、もしくはロール対群について前記中央膨出部の
頂部角度を異にする複数の押圧面を設け、ついで方形も
しくは矩形断面被圧延材のフランジ相当側面を、前記中
央膨出部中心を前記被圧延材のウェブ中心対応軸に一致
せしめて圧延し、フランジ相当側面を割りひろげたのち
、頂部押圧面が軸心にほぼ平行に形成された膨出部を有
するロールでウェブ相当側面を圧下することを特徴とす
る形鋼用の粗形鋼片の製造方法にある。The purpose of the present invention is to provide an efficient method for manufacturing rough-shaped steel pieces without the above-mentioned problems. A plurality of pressing surfaces with different top angles of the central bulge are provided for each pair or group of roll pairs, and then the side surface corresponding to the flange of the rolled material having a square or rectangular cross section is pressed against the center of the central bulge. After rolling the material so that it aligns with the axis corresponding to the web center and spreading out the side surface corresponding to the flange, the side surface corresponding to the web is rolled down with a roll having a bulge whose top pressing surface is formed approximately parallel to the axis. It is characterized by a method for manufacturing rough shaped steel pieces for shaped steel.
以下図面に従って本発明をさらに詳細に説明する。The present invention will be explained in more detail below with reference to the drawings.
さて第1図で得られた粗形鋼片dはHもしくは■形鋼の
場合第2図のようにカリバーh、i司の順に水平ロール
によって粗造形され、ついで図示していない仕上圧延工
程に送られる。Now, in the case of H or ■-shaped steel, the rough shaped steel piece d obtained in Fig. 1 is roughly shaped by horizontal rolls in the order of caliber h and i, as shown in Fig. 2, and then subjected to a finishing rolling process (not shown). Sent.
また鋼矢板もしくは溝形鋼の場合は第3図に示すように
粗形鋼片6からカリバーに=sの順に圧延されて製品化
される。Further, in the case of steel sheet piles or channel steel, as shown in FIG. 3, the rough shaped steel slab 6 is rolled into a caliber in the order of =s to produce a product.
本発明において得られた粗形鋼片も同様にして冷却過程
を経て庶子入されたのち製品化されるか、もしくは冷却
過程を通ることなく直接熱開祖、仕上圧延工程を通り製
品化されるもので、粗形鋼片化されたのちの工程はいず
れの周知技術も採用することができる。The rough-shaped steel slabs obtained in the present invention are similarly subjected to a cooling process and then put into production, or are made into products by directly passing through a thermal opening and finishing rolling process without going through a cooling process. Any known technique can be adopted for the process after the rough shaped steel billet is formed.
前述したように粗形鋼片となったのち、フランジ幅の絶
対長さを大きくすることは周知の圧延技術では種々の問
題があるために通常、番4図つ、工に示すように粗圧延
された時点での被圧延鋼片7,8のフランジ幅t、uは
矩形鋼片4、粗形鋼片6のフランジ相当側面5゜の幅1
17979幅gよりも小さいのが普通である。As mentioned above, there are various problems with the well-known rolling technology in increasing the absolute length of the flange width after a rough-shaped steel billet is obtained. The flange widths t and u of the rolled steel pieces 7 and 8 at the time of rolling are the width 1 of the 5° side surface equivalent to the flange of the rectangular steel piece 4 and the rough shaped steel piece 6.
It is usually smaller than 17979 width g.
そこで本発明者等はたとえば矩形鋼片4のフランジ相当
側面5の幅fよりも絶対値の大きいフランジ幅を有する
粗形鋼片を前記鋼片4から得る方法を研究した結果、本
発明方法を開発すること・によってそれに成功し、結果
として前記幅f換言すると厚みのうすい方形もしくは矩
形断面の鋼塊もしくは鋼片からなる被圧延材から幅広の
フランジを有する形鋼を製造することを可能ならしめた
ものである。Therefore, the present inventors have researched a method for obtaining a rough shaped steel piece from the steel piece 4, for example, having a flange width larger in absolute value than the width f of the flange-equivalent side surface 5 of the rectangular steel piece 4, and as a result, the present invention method has been developed. As a result, it became possible to manufacture a section steel having a wide flange from a rolled material consisting of a steel ingot or billet with a thin rectangular or rectangular cross section. It is something that
而して本発明の説明の便宜上、被圧延材の各部名称につ
いて第5図、第6図のように定義する。For convenience of explanation of the present invention, the names of each part of the rolled material are defined as shown in FIGS. 5 and 6.
第5図、第6図において被圧延材9゜9′の中心を通る
X軸をウェブ中心対応軸と云いこれと直交するY軸を中
心軸と云う。In FIGS. 5 and 6, the X axis passing through the center of the rolled material 9° 9' is called the web center corresponding axis, and the Y axis perpendicular to this is called the central axis.
Y軸と平行な両側面10.10’をフランジ相当側面と
称し、X軸と平行な両側面11,11’をウェブ相当側
面と云う。Both side surfaces 10 and 10' parallel to the Y-axis are referred to as flange-equivalent side surfaces, and both side surfaces 11 and 11' parallel to the X-axis are referred to as web-equivalent side surfaces.
さて前記被圧延材9を第7図に示すロール対12 、1
2’で圧延するが、前記ロール対12゜12′は中央膨
出部13.13’、該中央膨出部13゜13′を中心と
して対称に設けられた溝部14,15゜14’、15’
から構成される抑圧面を有しており、圧延にあたっては
前記中央膨出部13.13’を通るロール軸中心16
、16’に直交する軸線17゜17′を前記X軸と一致
せしめる。Now, the material to be rolled 9 is rolled by a pair of rolls 12, 1 shown in FIG.
2', the pair of rolls 12.12' has a central bulge 13.13', and grooves 14, 15.14', 15 symmetrically provided around the central bulge 13.13'. '
During rolling, the roll axis center 16 passing through the central bulge 13.13'
, 16' are made to coincide with the X-axis.
第7図は説明の便宜上ロール対12 、12’を離隔し
て表示しているが、両ロール12.12’で被圧延材9
を同時圧下して圧延するもので、ロール対12.12’
は垂直ロールあるいは水平ロールであっても差しつかえ
ない。In FIG. 7, the pair of rolls 12 and 12' are shown separated for convenience of explanation, but both rolls 12 and 12'
It is rolled by simultaneous rolling, and the roll pair is 12.12'
may be a vertical roll or a horizontal roll.
次に圧延要領の詳細を第8図ア、イ、つに示す前述のよ
うにロール対12 、12’で被圧延材9のウェブ中心
対応軸Xと一致するように中央膨出部13 、13’の
中心をあわせてフランジ相当側面を押圧するとフランジ
相当側面は第8図アのように割りひろげられ、溝部14
,15.14’、15’に充満する。Next, the details of the rolling procedure are shown in FIG. When the flange-equivalent side surface is pressed with the centers of
, 15.14', 15' are filled.
この場合前記中央膨出部13 、13’のロール軸心に
平行な縦断面は図に示すように頂および辺がややまるみ
を帯びた2等辺山角形をした山形でその頂部角度即ち頂
角を2αとした場合、最初の抑圧面では小さい方がよく
、ついで第8図イ、つの順にパスにつれて大きくなる方
が好ましい0
即ち2α〈2βく2γの如く頂角が大きくなる順に被圧
延材9を押圧するとフランジ相当側面は無理なくおしひ
ろげられる。In this case, the longitudinal section of the central bulges 13, 13' parallel to the roll axis is a chevron shaped like an isosceles angle with slightly rounded apex and sides, as shown in the figure. In the case of 2α, it is better to be small at the initial suppression surface, and then it is preferable to increase it as the pass passes in the order of 0 in Fig. 8A. In other words, the rolled material 9 is When pressed, the side surface corresponding to the flange can be pushed down and expanded without any force.
この場合溝部はたとえば第8図イ、つの15a 、is
bのように変化する。In this case, the groove portion is, for example, 15a, is
It changes as shown in b.
而して本発明にかかる前記中央膨出部および溝部の形状
および寸法は前述の説明に限定されるものではなく、本
発明の目的を逸脱しない範囲において設計することがで
きる。The shapes and dimensions of the central bulge and groove according to the present invention are not limited to those described above, and can be designed within the scope of the present invention.
たとえば中央膨出部の形状は断面で表現すると半円形、
台形、正三角形、矩形など圧延上必要な角部のまるみを
有するものであれば適宜な形状のものを同種類用いるか
あるいは組合せて使用することができる。For example, the shape of the central bulge is semicircular when expressed in cross section.
It is possible to use the same type or a combination of suitable shapes such as a trapezoid, an equilateral triangle, and a rectangle, as long as they have rounded corners necessary for rolling.
溝部についても同様で、目的とする形鋼にあわせて設計
されるべきである。The same goes for grooves, which should be designed according to the intended steel section.
而してこのような抑圧面は同一ロールに設けてもよく、
即ち第8図アオイ2つに示すような押圧面つまり中央膨
出部13.13’、溝部14.15と14’、15’か
らなる押圧面と中央膨出部13a、13a’、溝部14
a、15aと14a’、15a’からなる押圧面および
中央膨出部13b、13b’、溝部14b 、15bと
14 b’ 。Therefore, such suppression surfaces may be provided in the same role,
That is, the pressing surface as shown in the two mallows in FIG.
a, a pressing surface consisting of 15a and 14a', and 15a', central bulging parts 13b and 13b', and groove parts 14b, 15b and 14b'.
15b′からなる抑圧面を単一のロール対に併設するか
、または単一ロール対毎にそれぞれ同一もしくは異なっ
た種類の押圧面を設は複数のロール対によって逐次本発
明方法を実施しても良い。The method of the present invention may be carried out sequentially with a plurality of roll pairs, by providing a pressing surface consisting of 15b' together with a single roll pair, or by providing the same or different types of pressing surfaces for each single roll pair. good.
さらに複数の押圧面が併設されたロール対をさらに複数
個設け、多種類の被圧延材から多種類の形鋼を製造する
方法も採用することができる。Furthermore, it is also possible to adopt a method in which a plurality of pairs of rolls each having a plurality of pressing surfaces are provided to manufacture many types of steel sections from many types of rolled materials.
本発明では抑圧面を異にする複数のロール対を用いる場
合を指してロール対群を用いると云い、抑圧面の種類と
数については製品種別と圧延および品質条件に従って設
計することが好ましい。In the present invention, a group of roll pairs is used to refer to the case where a plurality of pairs of rolls with different pressing surfaces are used, and the type and number of pressing surfaces are preferably designed according to the product type, rolling, and quality conditions.
さて、第8図ア、イ、つのような工程の途中においてウ
ェブ相当側面11.11’を頂部押圧面が軸心にほぼ平
行に形成された膨出部、つまりウェブ内法寸法に相当す
る抑圧面を有するロールで圧下してもよいが、第8図の
つの段階から前記圧下を加えた実施例を第9図に示す。Now, in the middle of the steps shown in Fig. 8 A, B, and A, the web-equivalent side surface 11.11' is pressed into a bulge whose top pressing surface is approximately parallel to the axis, that is, a compression corresponding to the inner web dimension. Although rolling may be performed using a roll having a surface, FIG. 9 shows an embodiment in which the rolling is applied from the two stages shown in FIG.
第9図で18゜18′はウェブ圧下用のロールで、19
.19’は前記膨出部、20.20’は頂部抑圧面を示
す。In Figure 9, 18°18' is the roll for web compression, and 19
.. 19' is the bulge, and 20.20' is the top suppression surface.
この段階で被圧延材9は組型鋼片となり、フランジ部2
1ウェブ部22が形成されるが、第9図から明らかなよ
うにフランジ部21の幅は前記フランジ相当側面10.
10’よりも、著しく大きくなっている。At this stage, the rolled material 9 becomes a assembled steel piece, and the flange part 2
1 web portion 22 is formed, and as is clear from FIG. 9, the width of the flange portion 21 is equal to the width of the flange-equivalent side surface 10.
It is significantly larger than 10'.
このように本発明は厚みのうすい方形もしくは矩形断面
の被圧延材(ただし本発明では前述の説明から明らかな
ように必らずしも幾何学的に正確であることを要求する
ものではなく、目的を逸脱しない範囲において膨出もし
くは凹状の曲面をなす側面を有していても良い。In this way, the present invention provides a rolled material having a thin rectangular or rectangular cross section (however, as is clear from the above description, the present invention does not necessarily require that it be geometrically accurate; The side surface may have a bulging or concave curved surface within a range that does not deviate from the purpose.
)から幅広のフランジを有する形鋼を製造するのに適し
た粗形鋼片を極めて能率よく製造する方法を提供するも
ので実用上極めて有用なものである。) provides an extremely efficient method for producing rough shaped steel slabs suitable for producing shaped steel sections with wide flanges, and is extremely useful in practice.
而して本発明は分塊圧延機に続き粗仕上圧延機を有する
周知の圧延機列からなるプロセスに適用して直ちに高能
率を得ることができる。Therefore, the present invention can be applied to a process consisting of a well-known rolling mill train having a roughing mill followed by a blooming mill, and high efficiency can be obtained immediately.
つまり分塊圧延機で被圧延材を方形もしくは矩形断面に
圧延することは極めて容易であり、それに続き粗の水平
ミルで本発明方法を適用して粗形鋼片をつくることは圧
延バランス上極めて有利となるためであり、また同一の
方形もしくは矩形鋼片から各部寸法の異なった粗形鋼片
を容易に製造できることは、これまた圧延スケジュール
上著しく有利であり、生産性向上を可能ならしめる。In other words, it is extremely easy to roll the material to be rolled into a rectangular or rectangular cross-section with a blooming mill, and it is extremely difficult in terms of rolling balance to subsequently apply the method of the present invention to a rough-shaped steel billet using a rough horizontal mill. This is because it is advantageous, and the ability to easily produce rough-shaped steel pieces with different dimensions from the same square or rectangular steel piece is also extremely advantageous in terms of rolling schedules, making it possible to improve productivity.
また再加熱工程を採用する場合つまり一たん冷却手入れ
工程を経た矩形断面の被圧延材を利用する場合、より厚
みのうすいものを活用できるため再加熱が容易で、能率
も向上する。Furthermore, when a reheating process is adopted, that is, when a rolled material with a rectangular cross section that has undergone a cooling treatment process is used, a thinner material can be used, making reheating easier and improving efficiency.
第1図は周知のウェブ圧下方式による圧延方法の概略説
明図、第2図は周知の粗形鋼片以降のロールカリバー説
明図、第3図は周知の溝形鋼圧延手順を示すカリバー説
明図、第4図ア、イ、つ。
工は周知の被圧延材と粗形鋼片の寸法比較説明図、第5
図、第6図は本発明にかかる各部名称説明図、第7図は
本発明にかかる圧延要領説明図、第8図ア、イ、つは本
発明にかかるフランジ相当側面の圧延手順説明図、第9
図は本発明にがかるウェブ相当側面圧延要領説明図であ
る。
1・・・・・・鋼塊、2・・・・・・上ロール、3・・
・・・・下ロール、4・・・・・・矩形鋼片、5・・・
・・・フランジ相当側面、6・・・・・・粗形鋼片、7
,8・・・・・・被圧延鋼片、9,9′・・・・・・被
圧延材、12.12’・・・・・・ロール、13.13
’・・・・・・中央膨出部、14.14’、15.15
’・・・・・・溝部、16 、16’・・・・・・ロー
ル軸心、17 、17’・・・・・・軸線、18 、1
8’・・・・・・ウェブ圧下用ロール、19.19’・
・・・・・膨出部、20.20’・・・・・・頂部押圧
面、21・・・・・・フランジ部、22・・・・・・ウ
ェブ部。Fig. 1 is a schematic explanatory diagram of a rolling method using a well-known web rolling method, Fig. 2 is an explanatory diagram of a roll caliber after a well-known rough shaped steel billet, and Fig. 3 is an explanatory diagram of a caliber showing a well-known channel steel rolling procedure. , Figure 4 A, B, T. The work is based on the well-known dimensional comparison diagram of rolled material and rough shaped steel billet, No. 5.
Figure 6 is an explanatory diagram of the names of each part according to the present invention, Figure 7 is an explanatory diagram of the rolling procedure according to the present invention, and Figures 8A, B, and A are explanatory diagrams of the rolling procedure of the side surface corresponding to the flange according to the present invention, 9th
The figure is an explanatory diagram of a web-equivalent side rolling procedure according to the present invention. 1... Steel ingot, 2... Upper roll, 3...
...Lower roll, 4...Rectangular steel piece, 5...
... Flange equivalent side surface, 6 ... Rough shaped steel piece, 7
, 8... Rolled piece of steel, 9, 9'... Rolled material, 12.12'... Roll, 13.13
'...Central bulge, 14.14', 15.15
'...Groove, 16, 16'...Roll axis, 17, 17'...Axis, 18, 1
8'... Roll for web reduction, 19.19'.
...Bulging portion, 20.20'... Top pressing surface, 21... Flange portion, 22... Web portion.
Claims (1)
を有するロール対、もしくはロール対群について前記中
央膨出部の頂部角度を異にする複数の押圧面を設け、つ
いで方形もしくは矩形断面被圧延材のフランジ相当側面
を、前記中央膨出部中心を前記被圧延材のウェブ中心対
応軸に一致せしめて圧延し、フランジ相当側面を割りひ
ろげたのち、頂部抑圧面が軸心にほぼ平行に形成された
膨出部を有するロールでウェブ相当側面を圧下すること
を特徴とする形鋼用の粗形鋼片の製造方法。1. For a pair of rolls or a group of roll pairs each having a pressing surface consisting of grooves symmetrical about the central bulging portion, a plurality of pressing surfaces having different top angles of the central bulging portion are provided, and then a square or rectangular cross-section covering is provided. The flange-equivalent side surface of the rolled material is rolled with the center of the central bulge aligned with the web center-corresponding axis of the rolled material, and after the flange-equivalent side surface is spread out, the top suppression surface is made substantially parallel to the axis. A method for producing a roughly shaped steel piece for a shaped steel, the method comprising rolling down a side surface corresponding to a web with a roll having a formed bulge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9726975A JPS5819361B2 (en) | 1975-08-11 | 1975-08-11 | Manufacturing method of rough shaped steel billet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9726975A JPS5819361B2 (en) | 1975-08-11 | 1975-08-11 | Manufacturing method of rough shaped steel billet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5220958A JPS5220958A (en) | 1977-02-17 |
JPS5819361B2 true JPS5819361B2 (en) | 1983-04-18 |
Family
ID=14187800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9726975A Expired JPS5819361B2 (en) | 1975-08-11 | 1975-08-11 | Manufacturing method of rough shaped steel billet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5819361B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016182630A (en) * | 2015-03-26 | 2016-10-20 | Jfeスチール株式会社 | Manufacturing method and manufacturing apparatus for rough-shaped billet |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57142701A (en) * | 1981-02-28 | 1982-09-03 | Sumitomo Metal Ind Ltd | Production of wide flange beam using flat slab as blank material |
JPS5919766B2 (en) * | 1981-05-21 | 1984-05-08 | 住友金属工業株式会社 | Manufacturing method of H-beam steel |
JPS5918124B2 (en) * | 1981-07-10 | 1984-04-25 | 住友金属工業株式会社 | Manufacturing method of rough shaped steel billet |
FR2627187B1 (en) * | 1988-02-15 | 1993-01-22 | Inst Francais Du Petrole | FLUID CRACKING PROCESS OF A HYDROCARBON LOAD |
JP6521054B2 (en) * | 2015-03-19 | 2019-05-29 | 日本製鉄株式会社 | H-shaped steel manufacturing method |
WO2016148030A1 (en) * | 2015-03-19 | 2016-09-22 | 新日鐵住金株式会社 | H-shaped steel production method |
-
1975
- 1975-08-11 JP JP9726975A patent/JPS5819361B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016182630A (en) * | 2015-03-26 | 2016-10-20 | Jfeスチール株式会社 | Manufacturing method and manufacturing apparatus for rough-shaped billet |
Also Published As
Publication number | Publication date |
---|---|
JPS5220958A (en) | 1977-02-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5819361B2 (en) | Manufacturing method of rough shaped steel billet | |
CA1151913A (en) | Method of forming beam blank | |
JPS5837042B2 (en) | Manufacturing method of shaped steel | |
JP2512240B2 (en) | Rough rolling method for Z-shaped steel sheet pile | |
JP2738280B2 (en) | Manufacturing method of external constant parallel flange channel steel | |
US5983481A (en) | Method of making forged steel bar | |
US4295354A (en) | Method for producing beam blank for large size H-beam from flat slab | |
JPH0255605A (en) | Manufacture of very thick steel plate of excellent internal quality | |
JPH0675726B2 (en) | Rolling method of shaped steel by asymmetrical profile box hole die | |
JP2541326B2 (en) | Shaped steel rolling method | |
JPS5919764B2 (en) | Manufacturing method of square steel | |
JPH0824926B2 (en) | Rolling method for profile with flange | |
JPS5918124B2 (en) | Manufacturing method of rough shaped steel billet | |
JPH0596304A (en) | Method for rolling angle steel having unequal side and unequal thickness | |
JPH0426921B2 (en) | ||
JP2541328B2 (en) | Shaped steel rolling method | |
JP3473558B2 (en) | Rolling method for H-section steel | |
JP2577660B2 (en) | Hot rolling method for channel steel | |
JPS6023881B2 (en) | Method of forming rough shaped steel pieces | |
JPS6322881B2 (en) | ||
JP3627703B2 (en) | Method for rolling a shape having a flange | |
JPH0141402B2 (en) | ||
JPS5936580Y2 (en) | hot rolled section steel | |
SU1678469A1 (en) | Method of production beam channels | |
JPS6330101A (en) | Production of channel steel with projection |