JPS5855114A - Method and device for continuous production of steel bar - Google Patents
Method and device for continuous production of steel barInfo
- Publication number
- JPS5855114A JPS5855114A JP15412281A JP15412281A JPS5855114A JP S5855114 A JPS5855114 A JP S5855114A JP 15412281 A JP15412281 A JP 15412281A JP 15412281 A JP15412281 A JP 15412281A JP S5855114 A JPS5855114 A JP S5855114A
- Authority
- JP
- Japan
- Prior art keywords
- straightening
- billet
- hot
- die
- warm
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は棒鋼材の連続生産方法およびその装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous production method and apparatus for steel bars.
従来、棒鋼材の生産工程は熱間圧延−ロ打−熱処理一酸
洗一冷間引抜き一矯正の各工程がオフラインで行われて
いた。従って、その生産工程は多岐にわたり、極めて煩
雑かつ長時間を要していたため、その改善方が要請され
るようになった。この改善策として生産工程のオンライ
ン化が考えられるが、第１に従来の目打はロ−ルカリバ
ーを５〜７回通過させる必要があったこと、第２に従来
の冷間引抜きではその都度加工硬度が上昇し、オフライ
ンにて熱処理、酸洗が必要であったこと、第３に、従来
の矯正機では０．３龍／ｍ内外の真直度しか得られず、
０．１ｍ＊／ｒｒ＋Ｌ、ｌ下のものはすべて手矯正に頼
らざるを得なかったことなど、オンライン化できない種
々の障害があった。Conventionally, in the production process of steel bars, the steps of hot rolling, rolling, heat treatment, pickling, cold drawing, and straightening were performed off-line. Therefore, the production process is diverse, extremely complicated, and takes a long time, and there is a need for ways to improve it. One possible solution to this problem is to move the production process online, but firstly, conventional perforation required passing through the roll caliber 5 to 7 times, and secondly, in conventional cold drawing, processing was performed each time. The hardness increased, requiring off-line heat treatment and pickling. Thirdly, conventional straightening machines could only achieve straightness of around 0.3/m.
There were various obstacles that made it impossible to go online, such as having to rely on manual correction for everything below 0.1m*/rr+L and l.
この発明は上記障害を除去して生産工程のオンライン化
を図ったもので、熱間圧延後の鋼片が再結晶温度以上を
保持する間に、目打および熱間引抜きをなし、鋼片の抗
張力の低いところで、逆ダイスによる表面疵の除去処理
および温間（冷間も含む）引抜きを連続して一気に行い
、その後、予備および仕上げの段階的な矯正を経て極め
て真直度の高い棒鋼材の連続生産を可能にした棒鋼材の
連続生産方法およびその装置を提供することを目的とし
ている。This invention aims to eliminate the above-mentioned obstacles and bring the production process online.While the hot-rolled steel billet remains above its recrystallization temperature, perforation and hot drawing are performed to make the steel billet. In areas with low tensile strength, surface flaws are removed using an inverted die and warm (including cold) drawing is performed continuously at once.Then, after preliminary and finishing step-by-step straightening, extremely straight steel bars are produced. The purpose of the present invention is to provide a continuous production method and device for steel bars that enable continuous production.
次に、この発明を添付図面に示す好ましい例によって説
明する。Next, the present invention will be explained with reference to preferred examples shown in the accompanying drawings.
まず、熱間圧延機（図示せず）を通して圧延され、いま
だ再結晶温度以上を保持している鋼片１の先端を目打す
るとともに熱間引抜きを行う。この目打は第２図に示す
如きロ打ロール桜構即ち、縦横ともテーパーのカリバー
２を有する目打ロール３を、半回転させるのみで確実に
目打されるようにしている。なお、図中４は鋼片の目打
部分のうち、径大側にパリが出ないようにカリバー２の
途中に設けた逃げ部である。First, the tip of the steel billet 1, which has been rolled through a hot rolling mill (not shown) and still maintains a temperature equal to or higher than the recrystallization temperature, is perforated and hot drawn. This perforation is ensured by rotating the perforation roll 3, which has a perforation roll structure as shown in FIG. In addition, 4 in the figure is a relief part provided in the middle of the caliber 2 to prevent a hole from appearing on the larger diameter side of the perforated part of the steel piece.
仁の目打をより確実にするためには第１図示の如く、割
ダイス５を設ける。前記熱間引抜きは、前記割ダイス５
に近接して設けた熱間引抜きダイス６によって行われる
。この、引抜きには鋼片１の表面に水ガラスを塗付して
行うことが望ましい。熱間引抜き後の鋼片はシャワー水
冷装置（９示せず）により水冷後、温間引抜きダイス７
を通過して引抜かれる。この場合、一般鋼では７２０°
Ｃ以上、ハイスは４５０°Ｃ以上が最もよい。この温間
引抜きダイス７には逆ダイス８゜９が連続して設けられ
逆ダイス８．９によって表面疵が完全に除去される。こ
の逆ダイス９の後方には一定の間隔を隔てて温間または
冷間ダイス１０が設けられ、これを通過した鋼片１は所
要の精度に仕上げられる。ただし、この場合は特にスキ
ンパス程度の低減面率とすることが肝要である。In order to make the punching more reliable, a split die 5 is provided as shown in the first diagram. The hot drawing is performed using the split die 5.
The hot drawing die 6 is provided in close proximity to the hot drawing die 6 . It is desirable to perform this drawing by applying water glass to the surface of the steel piece 1. After hot drawing, the steel billet is cooled by a shower water cooling device (9 not shown), and then passed through a warm drawing die 7.
It passes through and is extracted. In this case, for general steel, 720°
The best temperature for high speed steel is 450°C or higher. This warm drawing die 7 is successively provided with an inverted die 8.9, and surface defects are completely removed by the inverted die 8.9. A warm or cold die 10 is provided behind the inverted die 9 at a predetermined interval, and the steel billet 1 passing through this die is finished to the required precision. However, in this case, it is particularly important to reduce the area ratio to the level of a skin pass.
前記各引抜きダイス６．７．１０を通る鋼片１の引抜き
の動力は油圧によって行われる。つまり、鋼片１の先端
をチャック１１にて握持した引抜車１２は上方のレール
台−１３上を滑るようになっている。ちなみに、従来の
引抜機では引抜車は下方に敷設したレールを滑るが、連
転引抜きを目的とする本願発明では下方レールにするこ
とは困難だからである。また、本願発明の引抜きは連続
引抜きであることから、各ダイス６．７，８．９がバッ
クテンションの役目を果し、真直度の大巾向上に役立っ
ている。The power for drawing the billet 1 through each of said drawing dies 6.7.10 is carried out hydraulically. That is, the drawing wheel 12, which grips the tip of the steel piece 1 with the chuck 11, is configured to slide on the upper rail stand 13. Incidentally, in a conventional drawing machine, the drawing wheel slides on a rail laid down below, but in the present invention, which aims at continuous drawing, it is difficult to use a downward rail. Further, since the drawing of the present invention is continuous drawing, each die 6.7, 8.9 serves as a back tension and is useful for greatly improving straightness.
前記逆ダイス９．１０は肌の良好な製品に仕上げるのを
目的として設けられたもので鋼片が複雑な形状である場
合または鋼種によっては３ケ 以上連続させる場合もあ
る。The above-mentioned inverted dies 9 and 10 are provided for the purpose of finishing a product with a good surface texture, and when the steel piece has a complicated shape or depending on the type of steel, three or more dies may be used in succession.
上記の如くして引抜かれ鋼片１は第３図および第４図示
の矯正機１４．１４’、および１５を経てｏ、１ｍｍ１
ｍ以下の真直度に矯正される。The steel piece 1 drawn out as described above is passed through the straightening machines 14, 14' and 15 shown in FIGS.
It is straightened to a straightness of m or less.
該矯正＆１４，１４’は予備矯正のためのものであるが
第３図Ａ、Ｂはその要部を拡大して示している。第３図
において１６．１７は上下のローラーで、多数列設され
ている。１８はこれら各ローラ１６．１７の回転軸をベ
アリング１９を介して軸支した支持体で、該支持体１８
はベアリング付レール枠２０に上下動可能に保持されて
いるとともに、上下フレーム２１．２２に螺挿したネジ
杆２３を一定方向に回すことによって前記ローラ１６，
１７の間隔をアジャストできるようになっている。前記
ローラ１６，１７はチェーン、ベルト、ギア等の連けい
手段によって正逆回転し、ローラ１６，１７間に装入し
た鋼片１を往復運動させつつ矯正する。この往復運動の
ストロークは自動的に変わるようにしておくことにより
、まず小面りを除去し、次いで大きい彎曲より次第に小
さい彎曲へ変え、最後に中央部の数個のローラで平行運
動を繰返し、０．２ｍｍ１ｍ以下の真直度を得る。なお
、矯正機１４′は鋼片１の横方向の曲りを矯正するため
のもので、その構成はローラが横方向に対向するほかは
前述の矯正機１４と同じである。The correction &14, 14' is for preliminary correction, and FIGS. 3A and 3B show the main part thereof in an enlarged manner. In FIG. 3, reference numerals 16 and 17 indicate upper and lower rollers, which are arranged in multiple rows. Reference numeral 18 denotes a support that supports the rotating shafts of these rollers 16 and 17 via bearings 19;
are held in a rail frame 20 with bearings so as to be able to move up and down, and the rollers 16,
17 intervals can be adjusted. The rollers 16 and 17 are rotated in forward and reverse directions by a linking means such as a chain, belt, gear, etc., and the steel piece 1 inserted between the rollers 16 and 17 is reciprocated and straightened. By making the stroke of this reciprocating movement change automatically, first the facet is removed, then the large curvature is gradually changed to a smaller curvature, and finally the parallel movement is repeated with several rollers in the center. Obtain straightness of 0.2 mm or less. The straightening machine 14' is for straightening the horizontal bending of the steel piece 1, and its configuration is the same as the straightening machine 14 described above except that the rollers are opposed to each other in the horizontal direction.
第４図に示す矯正機１５は仕上げ矯正のためのもので筒
状の型枠２４と、該型枠２４に挿通した鋼片１の両端握
持するチャック２５ 、２５’とからなり、該チャック
２５ 、２５’は油圧にて駆動されるようになっている
。しかしてチャノ、７２５ 、２５’を内方に向けて駆
動すると鋼片１は型枠２４内で圧縮されて径大化しエテ
外方に向けて同一量だけ駆動すると鋼片１は引伸ばされ
、旧任に戻る。従って、この型枠２４の内径を鋼片１と
のクリアランス２６が例えばＱ、２ｍ／ｍに規制しであ
るとすれば前記圧縮によって、そのクリアランス以上に
鋼片１が曲がらないため鋼片１は圧縮によって型枠２４
内で径大化するときに真直化させられ次いで引張りによ
って真直化した状態にて旧の径に戻されることとなるか
ら鋼片ｌは必然的に０．１ ＋ｕ／ｍ以下の真直度が得
られることとなる。この圧縮、引張りは第５図の表より
寸法の増減が０．２ｍ／ｍ以下となる範囲即ち、３〜５
％の範囲で行うのが最もよく、この範囲内であれば鋼片
の内部組織の変化は大して問題にならないからである。The straightening machine 15 shown in FIG. 4 is for finishing straightening and consists of a cylindrical form 24 and chucks 25 and 25' that grip both ends of the steel piece 1 inserted through the form 24. 25 and 25' are hydraulically driven. However, when the chanos 725 and 25' are driven inward, the steel billet 1 is compressed within the formwork 24 and its diameter increases, and when it is driven outward by the same amount, the steel billet 1 is stretched. Return to old position. Therefore, if the clearance 26 between the inner diameter of the formwork 24 and the steel billet 1 is regulated to, for example, Q, 2 m/m, the steel billet 1 will not bend more than the clearance due to the compression. Formwork 24 by compression
Since the steel billet l is straightened when the diameter is increased within the steel plate and then returned to its original diameter in the straightened state by tension, the steel billet l inevitably has a straightness of 0.1 + u/m or less. It will be. This compression and tension are within the range where the increase/decrease in dimension is 0.2 m/m or less, that is, 3 to 5
It is best to do this within a range of %, because within this range changes in the internal structure of the steel billet will not be a big problem.
以上の如く、この発明は、熱間圧延後の鋼片が再結晶温
度以上を保持する間に目打および熱間引抜きをなし、シ
ャワー水冷後温間引抜きし、さらに逆ダイスによる表面
疵の除去処理後温間または冷間引抜きし、しかる後、ロ
ーラによる予備矯正および圧縮、引張りによる仕上げ矯
正する方法およびその方法を実施する装置であり目打は
従来の如く０打ローラを５〜７回通さずして行え、しか
本引抜きは熱間、温間（場合によっては冷間）にて鋼片
の抗張力の低いところで効率よく行うため、引抜き途中
において従来の如き、熱処理工程が省略されるばかりで
なく、逆ダイスで疵取りを行うので、酸洗工程ガー切省
略される。As described above, the present invention perforates and hot-draws a steel billet after hot rolling while maintaining the temperature above the recrystallization temperature, performs hot drawing after cooling with shower water, and further removes surface flaws using an inverted die. This is a method of warm or cold drawing after treatment, and then preliminary straightening with rollers and final straightening by compression and tension, and an apparatus for carrying out the method. However, since the actual drawing is carried out efficiently in hot or warm (or cold in some cases) areas where the tensile strength of the steel piece is low, the conventional heat treatment step during drawing is simply omitted. Since the flaws are removed using an inverted die, the pickling process is omitted.
従って、この発明によれば、棒鋼材の生産工程の完全オ
ンライン化を可能にするとともに、工程の短縮化および
設備の小型化ができ、設置面積が少なく省力、省エネル
ギーが犬となるから生産コストを大巾に低減できる。ま
た、表面疵等の不良品が減少するとともに真直度のすぐ
れた製品が効率よく得られるなど各種のすぐれた効果を
奏する。Therefore, according to this invention, the production process of steel bars can be completely online, the process can be shortened, the equipment can be downsized, the installation area is small, labor is saved, energy is saved, and production costs are reduced. It can be reduced to a large extent. In addition, various excellent effects such as a reduction in the number of defective products such as surface defects and the ability to efficiently obtain products with excellent straightness are achieved.
なお、上記実施例では形材についてのみ説明したが、コ
イル材についても断面の大小を問わず原理的に同様の方
法および装置にて可能である。In the above embodiment, only the shaped material was explained, but the same method and apparatus can be used in principle for coiled material regardless of the size of the cross section.
図はこの発明の一実施例を示し、第１図は全体の略示的
正面断面図、第２図Ａは口打ロールの正面図、Ｂは同断
面図、第３図Ａは予備矯正機の正面図、Ｂは同、断面図
、第４図は仕上げ矯正機の断面図、第５図は鋼片の圧縮
、引張り率と寸法増減量を示す表である。
１・・・鋼片、 ２・・・テーパーカリバー、 ３・・
・目打ロール、 ５・・・割ダイス、 ６・・・熱間引
抜きダイス、 ７・・・温間引抜きダイス、 ８゜９・
・・逆ダイス、 １０・・・温間または冷間引抜きダイ
ス、 １４ 、１４’・・・予備矯正機、１５・・・
仕上げ矯正機。The figures show one embodiment of the present invention, in which Fig. 1 is a schematic front sectional view of the whole, Fig. 2 A is a front view of the punching roll, B is a sectional view thereof, and Fig. 3 A is a preliminary straightening machine. 4 is a sectional view of the finish straightening machine, and FIG. 5 is a table showing the compression, tensile rate, and dimensional increase/decrease of the steel billet. 1... Steel billet, 2... Taper caliber, 3...
・Perforated roll, 5...split die, 6...hot drawing die, 7...warm drawing die, 8゜9・
... Reverse die, 10... Warm or cold drawing die, 14, 14'... Pre-straightening machine, 15...
Finish straightening machine.
Claims (2)
る間に目打および熱間引抜きをなし、シャワー水冷後、
温間引抜きし、さらに逆ダイスによる表面疵の除去処理
後、温間または冷間引抜きし、しかる後、多数のローラ
間を往復動させることによる予備矯正および圧縮、引張
による仕上げ矯正をすることを特徴とする棒鋼材の連続
生産方法。(1) Perforation and hot drawing are carried out while the hot-rolled steel billet remains above the recrystallization temperature, and after cooling with shower water,
After warm drawing and surface flaw removal treatment using a reverse die, warm or cold drawing is performed, and then preliminary straightening is performed by reciprocating a number of rollers, and final straightening is performed by compression and tension. A continuous production method for steel bars.
、該口打ロール機構に近接して熱間引抜きダイスを、そ
の後方に水冷シャワー装置を介装して温間引抜きダイス
および逆ダイスを、さらにその後方に一定の間隔を隔て
て温間または冷間引抜きダイスをそれぞれ設けてなる連
続引抜き機構と、並列した多数のローラ間に引抜き加工
後の鋼片を往復摺接して曲りの矯正をする予備矯正機構
と、前記鋼片を圧縮。 引張りにより仕上げ矯正する仕上げ矯正機構とからなる
ことを特徴とする棒鋼材の連続生産装置。(2) A punching roll mechanism having a taper caliber, a hot drawing die in the vicinity of the punching roll mechanism, a water-cooled shower device installed behind it, a warm drawing die and a reverse die, and further thereafter. A continuous drawing mechanism has warm or cold drawing dies spaced apart from each other at regular intervals, and a pre-straightening mechanism that corrects bends by sliding the steel billet after drawing back and forth between a number of parallel rollers. Compress the steel piece with a mechanism. A continuous production device for steel bars characterized by comprising a finish straightening mechanism that performs finish straightening by tension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15412281A JPS5855114A (en) | 1981-09-29 | 1981-09-29 | Method and device for continuous production of steel bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15412281A JPS5855114A (en) | 1981-09-29 | 1981-09-29 | Method and device for continuous production of steel bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5855114A true JPS5855114A (en) | 1983-04-01 |
Family
ID=15577393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15412281A Pending JPS5855114A (en) | 1981-09-29 | 1981-09-29 | Method and device for continuous production of steel bar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5855114A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310107A (en) * | 2011-07-04 | 2012-01-11 | 天津冶金集团天材科技发展有限公司 | Precision alloy round wire drawing technology |
| CN113953761A (en) * | 2021-10-19 | 2022-01-21 | 福建三宝钢铁有限公司 | Preparation method of hot-rolled steel bar MG400 based on electric furnace smelting resin anchor rod |
-
1981
- 1981-09-29 JP JP15412281A patent/JPS5855114A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310107A (en) * | 2011-07-04 | 2012-01-11 | 天津冶金集团天材科技发展有限公司 | Precision alloy round wire drawing technology |
| CN113953761A (en) * | 2021-10-19 | 2022-01-21 | 福建三宝钢铁有限公司 | Preparation method of hot-rolled steel bar MG400 based on electric furnace smelting resin anchor rod |
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