JPS5854883B2 - How to form the end of a steel billet - Google Patents
How to form the end of a steel billetInfo
- Publication number
- JPS5854883B2 JPS5854883B2 JP55084309A JP8430980A JPS5854883B2 JP S5854883 B2 JPS5854883 B2 JP S5854883B2 JP 55084309 A JP55084309 A JP 55084309A JP 8430980 A JP8430980 A JP 8430980A JP S5854883 B2 JPS5854883 B2 JP S5854883B2
- Authority
- JP
- Japan
- Prior art keywords
- steel billet
- rolling
- forming
- billet material
- rear ends
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims description 46
- 239000010959 steel Substances 0.000 title claims description 46
- 239000000463 material Substances 0.000 claims description 42
- 238000005096 rolling process Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 18
- 238000005098 hot rolling Methods 0.000 claims description 2
- 238000007796 conventional method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000005242 forging Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Metal Rolling (AREA)
Description
【発明の詳細な説明】
本発明は、鋼片の圧延時に生じるフィッシュテールの防
止方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for preventing fishtails that occur during rolling of steel billets.
普通造塊或は連続鋳造等により得られた鋼片素材は、次
工程の圧延機で所定の厚・巾をもったブルーム、スラブ
或はビレット（以下総称して鋼片と呼ぶ）に圧延される
。The billet material obtained by ordinary ingot making or continuous casting is rolled into blooms, slabs, or billets (hereinafter collectively referred to as billets) with a predetermined thickness and width in a rolling mill in the next process. Ru.
一般に前記圧延に釦いては圧下加工の影響がとかく鋼片
の内部に１で浸透し難いため鋼片素材の表層部が内部よ
り大きく伸び、その結果として第１図に示すように鋼片
の先後端に、鋼片総重量に対して１．５〜２．０優の重
量比に達するフィッシュテール２と称する凹部が発生し
、圧延終了後該フィッシュテールは切断除去されるため
に圧延歩留が低下する欠点があった。Generally, during the rolling process, the influence of the reduction process is difficult to penetrate into the inside of the billet, so the surface layer of the billet material stretches more than the inside, and as a result, as shown in Figure 1, the tip of the billet material At the end, a concave portion called a fishtail 2 is generated which reaches a weight ratio of 1.5 to 2.0 to the total weight of the steel billet, and the fishtail is cut off and removed after rolling, resulting in a reduction in rolling yield. There was a drawback that it decreased.
このため、フィッシュテール量を減少させるために従来
、次のような方法が用いられている。For this reason, the following methods have been conventionally used to reduce the amount of fishtail.
第１の方法は、第２図Ａに示す如く圧延初期に圧延用ロ
ールで鋼片の先後端に強圧下を加え、同図Ｂに示すよう
な凸部を成形したのち圧延を行う方法。The first method is to apply strong reduction to the front and rear ends of the steel billet using rolling rolls at the beginning of rolling as shown in FIG. 2A, to form convex portions as shown in FIG.
或は、第２の方法は、特開昭５３−１４２３５０号「鋼
片のフィッシュテール防止熱間成形方法」に提案されて
いるように連続鋳造鋳片もしくは分塊圧延後の鋼片素材
の切断作業に先立ち、前記鋼片素材の切断予定位置に上
下左右のいずれか一方もしくは双方に傾斜面を有する凹
部を熱間にてプレスを行い角錐状の凸部を形成したのち
圧延を行う方法等が用いられている。Alternatively, the second method involves cutting a continuous cast slab or a steel billet material after blooming and rolling, as proposed in JP-A No. 53-142350 "Hot forming method for preventing fishtail of steel billet". Prior to the work, there is a method in which a concave portion having an inclined surface on either the top, bottom, right, left, or both sides is hot pressed at the planned cutting position of the steel billet material to form a pyramid-shaped convex portion, and then rolling is performed. It is used.
しかし、第１の方法に訃いては、凸部の成形は圧延作業
中に行うために圧延能率が低下する欠点があり、第２の
方法においては、フィッシュテールが完全に防止できず
、更に切断装置前面での成形が必要であった。However, the first method has the drawback that the forming of the convex portions is done during the rolling operation, which reduces rolling efficiency, and the second method cannot completely prevent fishtails, and furthermore, Molding was required at the front of the device.
本発明は、上記欠点を解消し且つフィッシュテールの発
生量がより少ない効果的な鋼片の端部成形方法を提供す
るものである。The present invention provides an effective method for forming the end of a steel billet that eliminates the above-mentioned drawbacks and generates fewer fishtails.
すなわち本発明とは、鋼片の先後端に凸部を形成して、
鋼片圧延時に生成されるフィッシュテールを防止する方
法において、鋼片素材の先後端を中央部は平面で両端部
は曲面或は傾斜面形状をしたプレスへラダーを有する成
形プレスで、鋼片素材の上下左右の一方向或は両方向よ
り成形し、前記先後端に素材断面より漸時小さくなる断
面となるような傾斜肩部を有し、鋼片素材より狭巾、薄
肉の平行部と張出部を有する凸部形状に成形することを
特徴とするものである。In other words, the present invention involves forming convex portions at the front and rear ends of a steel piece,
In a method for preventing fishtails generated during rolling of a steel billet, the front and rear ends of the billet material are transferred to a press with a flat central portion and curved or inclined surfaces at both ends using a forming press with a ladder. It is formed from one or both of the top, bottom, right, left, and right directions, and has an inclined shoulder portion at the front and rear ends that gradually becomes smaller in cross section than the material cross section, and has a parallel portion that is narrower and thinner than the steel billet material and overhangs. It is characterized by being molded into a convex shape having a portion.
以下本発明を添付図面を参照して詳細に説明する。The present invention will now be described in detail with reference to the accompanying drawings.
本発明では、熱間圧延に先立ち鋼片素材の先後端を第４
図Ａ或は第４図Ｂに示すどちらか一方の形状に成形する
。In the present invention, prior to hot rolling, the leading and trailing ends of the steel billet material are
It is molded into either the shape shown in Figure A or Figure 4B.
成形後の凸部断面の巾Ｘ（但しＸは下記１より決定）が
鋼片素材の板厚Ｔより犬の時は、第４図Ａのように左右
の巾方向のみを鍛造し肩部４と鋼片素材中央部の板肉Ｗ
より狭巾の平行部５と且つ張出部６よりなる凸部形状に
成形する。When the width X of the cross section of the convex part after forming (X is determined from 1 below) is smaller than the plate thickness T of the billet material, only the left and right width directions are forged as shown in Fig. 4A. and plate thickness W at the center of the steel billet material
It is formed into a convex shape consisting of a narrower parallel portion 5 and an overhanging portion 6.
成形後の凸部断面の巾Ｘが鋼片素材の板厚Ｔより小さい
時は、同図Ｂのように上下・左右の板厚方向及び巾方向
の両方向を鍛造し肩部４と鋼片素材中央部の板肉Ｗ、板
厚Ｔより狭巾で薄肉の平行部５と且つ張出部６よりなる
凸部形状に成形する。When the width X of the cross-section of the convex part after forming is smaller than the plate thickness T of the billet material, the shoulder 4 and the billet material are forged in both the upper and lower, left and right thickness direction and width direction as shown in Figure B. It is formed into a convex shape consisting of a plate thickness W at the center, a parallel part 5 narrower and thinner than the plate thickness T, and an overhanging part 6.
例えば、３７０ｍｍ厚Ｘ６００ｍｍ巾の断面の鋼片素材
を３８０朋〆の鋼片に圧延する場合は、左右の巾方向の
み鍛造し、２００關〆の鋼片に圧延する場合は、上下左
右の巾・板厚・両方向より鍛造を行う。For example, when rolling a steel billet material with a cross section of 370mm thick x 600mm width into a 380 mm width, it is forged only in the left and right width directions, and when rolled into a 200 mm width, the top, bottom, left and right widths are forged. Forging is performed from the plate thickness and both directions.
前記鋼片素材先後端の成形時における凸部形状の凸部断
面の巾Ｘ、凸部断面の板厚Ｘ１、平行部の長さｌ、肩部
の曲率Ｒの各寸法は下記（１）〜（４）式により決定す
る。The dimensions of the width X of the cross section of the convex part, the plate thickness X1 of the cross section of the convex part, the length l of the parallel part, and the curvature R of the shoulder part of the convex part shape when forming the front and rear ends of the steel billet material are as follows (1) ~ Determined by equation (4).
第４図において鋼片素材の巾をＷ、板厚をＴ、長さをし
、圧延後の鋼片の一辺或は径をＤとすれば、
平行部の長さく１）＝ （０，０２〜０．３）ＸＬ・・
・・・・（３）肩部の曲率 ■−△Ｈ／’−／ ｃａ
・・・・・・・・・・・・（４）例えば、断面
３７０ｒＩＬ７ＩＬ厚Ｘ６００ｍ１巾Ｘ６０００ｍｍ長
さの鋼片素材から２００ｍｍ、Ｓの断面を有する鋼片を
製造する場合、
Ｘ＝１６０〜５００１１Ｌ扉、Ｘ１＝１６０〜３７０飄
△Ｈ１＝４４０〜１００關、
△Ｈ２−２１０〜０７ｒＬ７ｒＬ、
Ａ＝１２０〜１８００關、
Ｒ＝のの形状が適している。In Fig. 4, if the width of the steel billet material is W, the plate thickness is T, the length is D, and the side or diameter of the steel billet after rolling is D, then the length of the parallel part 1) = (0,02 ~0.3)XL...
...(3) Curvature of shoulder ■-△H/'-/ca
(4) For example, when manufacturing a steel billet with a cross section of 200 mm and S from a steel billet material with a cross section of 370 r IL 7 IL thickness x 600 m 1 width x 6000 mm length, X = 160 ~ 500 11 L door The following shapes are suitable:
又、本発明では鋼片素材の鍛造時、先後端部の最先端は
曲面を有する張出部６が形成され、その長さ１１は押込
量△Ｈ１、△Ｈ２、平行部の長さ１等により異なるが、
例えば３７０ｍｍ厚Ｘ ６００ｍｍ巾の鋼片素材を凸部
断面の巾及び厚さを２００ｍ１巾Ｘ２００ｍｍ厚さに平
行部の長さを２００間の凸部寸法に鍛造した場合、張出
部の長さｌ、は５０ｖｔｍ張出し、又平行部の長さを６
００ｍｍに鍛造した場合は、張出部の長さ１１は１００
關張出す。In addition, in the present invention, when forging a steel billet material, a protruding portion 6 having a curved surface is formed at the leading edge of the leading and trailing ends, and its length 11 is determined by the pushing amount △H1, △H2, the length of the parallel portion 1, etc. It depends on the
For example, if a steel billet material with a thickness of 370 mm and a width of 600 mm is forged so that the width and thickness of the cross section of the convex part are 200 mm wide and 200 mm thick, and the length of the parallel part is between 200 mm, the length of the overhang part is l. , has a 50vtm overhang, and the length of the parallel part is 6
When forged to 00mm, the length of the overhang part 11 is 100mm.
Expand.
以上のように鋼片素材の先後端を肩部と狭巾で薄肉或は
狭巾の平行部と張出部とよりなる凸部形状とすることで
、圧延時、凸部は圧延による変形量は減少し、表面層の
伸びが小さくなるとともに先後端の凸部以外の部分は該
凸部に吸収されてフィッシュテールと逆の形状に形成さ
れた張出部によって、従来に比ベフィッシュテールは更
に減少する。As described above, by forming the front and rear ends of the billet material into a convex shape consisting of a shoulder, a narrow, thin or narrow parallel part, and an overhang, the convex part will be deformed by rolling during rolling. As the elongation of the surface layer becomes smaller, the parts other than the protrusions at the front and rear ends are absorbed by the protrusions, and the overhangs are formed in the opposite shape to the fishtail, making the fishtail smaller than before. Further decrease.
第６図Ａ及びＢは、本発明方法における鋼片素材先後端
成形の実施態様を示した図である。FIGS. 6A and 6B are diagrams showing an embodiment of forming the leading and trailing ends of a steel billet material in the method of the present invention.
前記凸部を形成する上で最も適したプレスヘッドは下記
（５）〜（７）式の寸法にすることが好ましい。It is preferable that the press head most suitable for forming the convex portion has dimensions according to the following formulas (5) to (7).
プ”” ド （Ｙ）＝ （０，２〜０．４
） ＸＸ−・−−−・（５）孔型の巾
孔型庭中 ■−（１，０〜１．５）ＸＴ又は（１，０〜
１．５）×Ｗ ・・・・・・・・・（６）
テーバ角 （の＝２〜１５° ・・・・・・・・・（
７）第５図は、本発明方法を実施するための圧延ライン
を示した図である。(Y) = (0,2~0.4
) XX-・----・(5) Hole-shaped hole-shaped garden ■-(1,0~1.5) XT or (1,0~
1.5)×W ・・・・・・・・・(6) Taber angle (=2~15° ・・・・・・・・・(
7) FIG. 5 is a diagram showing a rolling line for carrying out the method of the present invention.
鋳造後或は造塊後、所定長さに切断された鋼片素材３は
、加熱炉７にて加熱後ローラーテーブルにより搬送され
、所定の位置に停止したのち、中央部が平行で両端部が
曲面或は傾斜面形状をした成形プレス９にて鋼片素材３
の先後端を鍛造し、前記先後端に肩部４と狭巾で薄肉或
は狭巾の平行部５と張出部６とよりなる凸部形状に成形
する。After casting or ingot formation, the steel billet material 3 cut into a predetermined length is heated in a heating furnace 7 and transported by a roller table, and after stopping at a predetermined position, the center part is parallel and both ends are A steel billet material 3 is formed by a forming press 9 having a curved or inclined surface shape.
The front and rear ends are forged, and the front and rear ends are formed into a convex shape consisting of a shoulder part 4, a thin or narrow parallel part 5, and an overhang part 6.
そののち第１フルーマ１４、第２ブルーマ１５或は連続
圧延機１６にて所望の角或は丸の鋼片１に圧延される。Thereafter, it is rolled into a desired square or round steel piece 1 in the first bloomer 14, the second bloomer 15, or the continuous rolling mill 16.
前記成形プレス９は、油圧式或は水圧式等のシリンダー
１１と、第６図に示すような孔型形状を有スるプレスヘ
ッド１０と、ロッド１２とよりなり、シリンダー１１の
作動によりロッド１２を介してプレスヘッド１０が前進
又は後退を行う、このような作動により鋼片素材３を両
側より同時に鍛造し凸部形状を成形する。The forming press 9 is composed of a hydraulic or hydraulic cylinder 11, a press head 10 having a hole shape as shown in FIG. 6, and a rod 12. The press head 10 moves forward or backward through the press head 10. Through such an operation, the steel billet material 3 is simultaneously forged from both sides and formed into a convex shape.
この時の鋼片の押込量△Ｈ１、△Ｈ２は、圧延後の角又
は丸鋼片１の一辺の長さ或は径の長さによリ、又平行部
の長さｌは鋼片素材３の長さＬにより決定し、又第４図
Ｂに示す様に鋼片素材３の先後端を上下及び左右にテー
パのある凸部形状に成形する場合は、鋼片素材３の先端
を所定の位置に位置決めしたのち先ず８面を成形プレス
９で鍛造を行い、続いて反転機８にて該鋼片素材３を９
０゜回転させたのちｂ面の鍛造を行う。The indentation amount △H1, △H2 of the steel billet at this time depends on the length of one side or the diameter of the square or round steel billet 1 after rolling, and the length l of the parallel part depends on the billet material. 3, and when forming the front and rear ends of the steel billet material 3 into a convex shape that tapers vertically and horizontally as shown in FIG. 4B, the tip of the steel billet material 3 is After positioning the steel billet material 3 at the position, the 8 sides are first forged using the forming press 9, and then the billet material 3 is forged using the reversing machine 8.
After rotating 0°, forge the b-side.
そののち該鋼片、素材３をローラーテーブルで前進移送
させた後、鋼片素材３の後端を所定の位置に位置決めし
、ｂ面を鍛造し、鍛造後戻転機１３にて再び９ｏ。After that, the steel billet and material 3 are moved forward on a roller table, the rear end of the steel billet material 3 is positioned at a predetermined position, the b side is forged, and the after-forging return machine 13 is used to turn the material 3 to 9o again.
回転を行なったのち８面を鍛造して、先後端に凸※※部
形状を成形する。After rotation, 8 sides are forged to form a convex shape at the front and rear ends.
第６図Ａに示す様に左右にテーパーのある凸部形状を成
形する場合は、反転機３，１３は使用せず、鋼片素材３
の先端ａ面を先ず鍛造したのち続いて後端８面の鍛造を
行い凸部形状を成形する。When forming a convex shape tapered from side to side as shown in Fig. 6A, the reversing machines 3 and 13 are not used, and the billet material 3
The front end a side is first forged, and then the rear end eight sides are forged to form a convex shape.
次に本発明の実施例についてのべる。Next, examples of the present invention will be described.
第１表は本発明及び従来の鋼片素材寸法と、圧延後の鋼
片寸法及び本発明のプレス成形後の凸部の各寸法を示し
たものであり、第２表は圧延後の鋼片先後端のフィッシ
ュテールの発生量を示したものである。Table 1 shows the dimensions of the steel billet material of the present invention and the conventional method, the dimensions of the billet after rolling, and the dimensions of the convex portion after press forming of the present invention, and Table 2 shows the dimensions of the billet material after rolling. This shows the amount of fishtail generated at the front and rear ends.
伺、従来法３は、鋼片素材をその１１圧延、従来法４は
、第２図に示す様なロールにて巾方向を鍛造した比較例
である。The conventional method 3 is a comparative example in which the steel billet material is rolled for 11 seconds, and the conventional method 4 is forged in the width direction using rolls as shown in FIG.
以上のべたように本発明によれば、特定の形状をしたプ
レスヘッドを有する成形プレスで加熱炉抽出後に、鋼片
の前後端の上下左右の両方或は１方向を鍛造して特定形
状の凸部を形成することにより、フィッシュテールの発
生量が従来に比べ大巾に減少するとともに、本発明は、
鍛造法のため従来の如き圧延能率の低下もなく且つ全圧
延機に耘けるフィッシュテールの発生防止ができた。As described above, according to the present invention, after extraction in a heating furnace with a forming press having a press head having a specific shape, the front and rear ends of the steel billet are forged in both the top, bottom, left and right, or in one direction, to form a convex shape in a specific shape. By forming the part, the amount of fishtail generated is greatly reduced compared to the conventional method, and the present invention also provides the following features:
Because of the forging method, there is no reduction in rolling efficiency as in the conventional method, and the occurrence of fishtails can be prevented in all rolling mills.
第１図は、鋼片の先後端に発生するフィッシュテールの
形状を示す斜視図。
第２図は、従来法で圧延ロールで凸部成形を示す図。
第３図は、従来法の鍛造による凸部成形を示す図。
第４図Ａ、Ｂは本発明の鍛造後の凸部形状を示す図。
第５図は、本発明方法を実施するための圧延ラインを示
す図。
第６図Ａ−Ｂは、本発明の鋼片素材先後端成形の実施状
態を示す図である。
１・・・鋼片、２・・・フィッシュテール、３・・・鋼
片素材、４・・・肩部、５・・・平行部、６・・・張出
部、７・・・加熱炉、８・・・反転機、９・・・成形プ
レス、１０・・・プレスヘッド、１１・・・シリンダー
、１２・・・ロッド、１３・・・反転機、１４・・・第
一フルーマー １５・・・第二フルーマー １６・・・
連続圧延機。FIG. 1 is a perspective view showing the shape of a fishtail that occurs at the front and rear ends of a steel piece. FIG. 2 is a diagram showing the conventional method of forming convex portions using rolling rolls. FIG. 3 is a diagram showing convex portion forming by forging in a conventional method. FIGS. 4A and 4B are diagrams showing the shape of the convex portion after forging according to the present invention. FIG. 5 is a diagram showing a rolling line for carrying out the method of the present invention. FIGS. 6A and 6B are diagrams illustrating the state in which the leading and trailing ends of the steel billet material are formed according to the present invention. DESCRIPTION OF SYMBOLS 1... Steel billet, 2... Fishtail, 3... Steel billet material, 4... Shoulder part, 5... Parallel part, 6... Overhang part, 7... Heating furnace , 8... Reversing machine, 9... Forming press, 10... Press head, 11... Cylinder, 12... Rod, 13... Inverting machine, 14... First flumer 15. ...Second Flumer 16...
Continuous rolling mill.
Claims (1)
されるフィッシュテールを防止する方法に釦いて、熱間
圧延に先立ち鋼片素材の先後端部に素材断面より漸時小
さくなる断面となるような傾斜肩部を有し、鋼片素材よ
り狭巾、薄肉の平行部と張出部を有する凸部形状に形成
することを特徴とする鋼片の端部成形方法。1. A method of forming convex portions at the front and rear ends of the steel billet to prevent fishtails formed during billet rolling is adopted. Prior to hot rolling, the front and rear ends of the steel billet material are gradually made smaller than the cross section of the material. 1. A method for forming an end of a steel billet, the method comprising forming the end portion of a steel billet into a convex shape having an inclined shoulder portion having a cross section such that the steel billet material has a narrower width and a thinner wall than the steel billet material, and having a parallel portion and an overhanging portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55084309A JPS5854883B2 (en) | 1980-06-20 | 1980-06-20 | How to form the end of a steel billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55084309A JPS5854883B2 (en) | 1980-06-20 | 1980-06-20 | How to form the end of a steel billet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS579502A JPS579502A (en) | 1982-01-19 |
| JPS5854883B2 true JPS5854883B2 (en) | 1983-12-07 |
Family
ID=13826887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55084309A Expired JPS5854883B2 (en) | 1980-06-20 | 1980-06-20 | How to form the end of a steel billet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5854883B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344903A (en) * | 2015-12-18 | 2016-02-24 | 西南铝业（集团）有限责任公司 | Forging method for producing block large forged pieces |
| CN106794512A (en) * | 2014-08-18 | 2017-05-31 | 巴勒特锻造有限公司 | Open die forging technique and the product using its making for minimizing blade-end loss |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0647122B2 (en) * | 1989-06-12 | 1994-06-22 | 住友金属工業株式会社 | Head for forming end of rolled material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5326759A (en) * | 1976-08-26 | 1978-03-13 | Kobe Steel Ltd | Plate material rolling |
| JPS5393158A (en) * | 1977-01-27 | 1978-08-15 | Kawasaki Steel Co | Fish tail growth preventive at blooming |
| JPS5510363A (en) * | 1978-07-10 | 1980-01-24 | Kawasaki Steel Corp | Edging method for slab |
| JPS5570403A (en) * | 1978-11-24 | 1980-05-27 | Ishikawajima Harima Heavy Ind Co Ltd | Method and apparatus for edging to reduce breadth |
-
1980
- 1980-06-20 JP JP55084309A patent/JPS5854883B2/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5326759A (en) * | 1976-08-26 | 1978-03-13 | Kobe Steel Ltd | Plate material rolling |
| JPS5393158A (en) * | 1977-01-27 | 1978-08-15 | Kawasaki Steel Co | Fish tail growth preventive at blooming |
| JPS5510363A (en) * | 1978-07-10 | 1980-01-24 | Kawasaki Steel Corp | Edging method for slab |
| JPS5570403A (en) * | 1978-11-24 | 1980-05-27 | Ishikawajima Harima Heavy Ind Co Ltd | Method and apparatus for edging to reduce breadth |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106794512A (en) * | 2014-08-18 | 2017-05-31 | 巴勒特锻造有限公司 | Open die forging technique and the product using its making for minimizing blade-end loss |
| CN105344903A (en) * | 2015-12-18 | 2016-02-24 | 西南铝业（集团）有限责任公司 | Forging method for producing block large forged pieces |
| CN105344903B (en) * | 2015-12-18 | 2017-06-16 | 西南铝业（集团）有限责任公司 | A kind of forging method for producing block class large forgings |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS579502A (en) | 1982-01-19 |
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