JPH04197513A - Method for drawing core of coil like steel tube - Google Patents
Method for drawing core of coil like steel tubeInfo
- Publication number
- JPH04197513A JPH04197513A JP32472590A JP32472590A JPH04197513A JP H04197513 A JPH04197513 A JP H04197513A JP 32472590 A JP32472590 A JP 32472590A JP 32472590 A JP32472590 A JP 32472590A JP H04197513 A JPH04197513 A JP H04197513A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- core
- reducing rate
- outer diameter
- wall thickness
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 19
- 239000010959 steel Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims description 16
- 239000000314 lubricant Substances 0.000 abstract description 5
- 239000002184 metal Substances 0.000 description 18
- 229910052751 metal Inorganic materials 0.000 description 18
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 241000270666 Testudines Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 210000001179 synovial fluid Anatomy 0.000 description 1
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
- ZPEJZWGMHAKWNL-UHFFFAOYSA-L zinc;oxalate Chemical compound [Zn+2].[O-]C(=O)C([O-])=O ZPEJZWGMHAKWNL-UHFFFAOYSA-L 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はコイル状に巻かれた長尺の鋼管や合金管などの
金属管を連続的に引抜加工する方法に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for continuously drawing a long coiled metal tube such as a steel tube or an alloy tube.
［従来の技術］
鋼管なとの金属管を加工して細径管にしたり、異形管に
する方法として、管内にプラグを挿入しダイスを通して
冷間て引抜加工、する方法いわゆる芯用法、およびプラ
グを挿入せずダイスのみを使用して引き抜く空引法か知
られている。こわら従来法はいずわも直管について行な
われており、本出願人の出願した特開昭６０−１３７５
１０号公報で知られているような、コイル状に巻かれた
長尺の鋼管や超合金なとの金属管を引抜加工することは
行なわれていない。従来の直管の芯用法は、直管をｒ４
滑液槽内に浸漬して管内に潤滑処理を施したのち引き抜
くものであるか、これを長尺のコイル状金属管に通用し
た場合、金属管の全長にわたって引抜加工することかき
わめて困難である。長尺の金属管を芯用法により引抜加
工すると、潤滑切れによりプラグと管内面か焼きつき、
管内に疵か発生するばかりでなくプラグの寿命か著しく
低下する。[Prior art] A method of processing metal pipes such as steel pipes into small diameter pipes or irregularly shaped pipes involves inserting a plug into the pipe and cold drawing it through a die. It is also known as the empty drawing method, which uses only a die to pull out the material without inserting it. The Kowara conventional method has been applied to straight pipes, and is disclosed in Japanese Patent Application Laid-Open No. 1375-1985 filed by the present applicant.
As is known from Publication No. 10, drawing of a long coiled steel tube or a metal tube such as a superalloy is not performed. The conventional straight pipe core usage is R4
Is it something that is immersed in a synovial fluid bath to lubricate the inside of the tube and then pulled out?If this is applied to a long coiled metal tube, it is extremely difficult to pull it out over the entire length of the metal tube. . When drawing a long metal tube using the core method, the plug and inner surface of the tube may seize due to lack of lubrication.
Not only will flaws occur inside the pipe, but the life of the plug will be significantly shortened.
管内表面にも疵のない引抜管を歩留まり良く、かつ高能
率の方法としてコイル状金属管の一端から所要量の液状
潤滑剤を管内に挿入し、該端部を先付は加工し、ついて
該一端からダイスを通して引き抜くことを特徴とするコ
イル状金属管の連続引抜方法が特開昭６３−２４２４’
１５号公報に開示されている。しかし、潤滑を良好に行
っても、プラグ抜け、ビビリ、焼きつき、プラグ食い込
み不良等か発生し、良好な引抜きが行えない場合かある
。As a high-yield, high-efficiency method for producing drawn pipes with no defects on the inner surface of the pipe, the required amount of liquid lubricant is inserted into the pipe from one end of the coiled metal pipe, the tip is processed, and then the pipe is coated. JP-A-63-2424' discloses a continuous drawing method for a coiled metal tube, which is characterized by drawing from one end through a die.
It is disclosed in Publication No. 15. However, even with good lubrication, problems such as plug removal, chatter, seizure, and poor plug biting may occur, making it impossible to perform a good extraction.
［発明が解決しようとする課題］
コイル状管の一端から液状潤滑剤を管内に導入する方法
は高価な設備と作業が繁雑になり、作業性が悪い。本発
明は、少量の潤滑剤を予めコイル状鋼管の一端より挿入
し、その後潤滑剤を供給することなく長尺のコイル状金
属管を連続的に引抜加工するものであって、コイル状に
巻かれた長尺の金属管を巻き出しつつ芯用法により引抜
加工し、管内表面にも疵のない引抜管を歩留まり良く、
かつ高能率の方法て長尺のコイル状金属を得ることを目
的とする。[Problems to be Solved by the Invention] The method of introducing liquid lubricant into the coiled pipe from one end requires expensive equipment and complicated work, and has poor workability. The present invention involves inserting a small amount of lubricant in advance into one end of a coiled steel tube, and then continuously drawing a long coiled metal tube without supplying any lubricant. By unrolling the long metal tube and drawing it using the core method, we can produce a drawn tube with no scratches on the inner surface with a high yield.
The object of the present invention is to obtain a long coiled metal using a highly efficient method.
［課題を解決するための手段および作用］本発明は浮動
プラグを使用したコイル状鋼管の芯引加工において、外
径減少率（％）と肉厚減少率（％）の比Ｙと断面減少率
（％）Ｘが（１）式および（２）式を満たす条件で行う
ことを特徴とするコイル状鋼管の芯引加工方法である。[Means and effects for solving the problem] The present invention is based on the core drawing process of a coiled steel pipe using a floating plug, and the ratio Y of the outer diameter reduction rate (%) to the wall thickness reduction rate (%) and the cross-section reduction rate. This is a method for coring a coiled steel pipe, characterized in that (%) X satisfies formulas (1) and (2).
Ｙ≦０．００］８ （Ｘ−１５）２＋ ０．５−（１）
１５≦Ｘ≦５０ ・・・（２）本発明
の対象とする金属管は、炭素鋼、低合金鋼、合金鋼なと
の何れでもよく、熱間押出雀、マンネスマン各種方式に
よるシームレス管、電縫管やＴＩＧ溶接管なとの溶接管
、鍛接管などをストレッチレテユーサーにより絞り圧延
しコイル状に巻き取った金属管や、電縫管やＴＩＧ溶接
管なとの溶接管などを絞り圧延せずにコイル状に巻き取
った金属管、冷間引抜加工したのちコイル状に巻き取っ
た金属管などの長尺管である。Y≦0.00]8 (X-15)2+ 0.5-(1)
15 ≦ Welded pipes such as sewn pipes, TIG welded pipes, forged welded pipes, etc., are reduced and rolled using a stretch retyuuser and wound into coils to form metal pipes, and welded pipes such as electric resistance welded pipes and TIG welded pipes are reduced and rolled. These are long tubes such as metal tubes that have been rolled up into a coil shape without being rolled, and metal tubes that have been cold drawn and then wound up into a coil shape.
第２図に本発明の対象となるコイル状鋼管の芯引加工方
法の概略図を示す。図に示す如く、巻戻したコイル状鋼
管１は、内部にフローテインクブラグ２を挿入した後ダ
イス３に通して所定の径の鋼管４に芯引加工される。FIG. 2 shows a schematic diagram of a method for coring a coiled steel pipe, which is the object of the present invention. As shown in the figure, the unwound coiled steel pipe 1 is cored into a steel pipe 4 having a predetermined diameter by inserting a float ink plug 2 therein and passing it through a die 3.
次に限定理由について述べる。Next, we will discuss the reasons for the limitations.
コイル状鋼管の芯用方法について、広範囲の芯用実験を
行い、種々の要因を研究した結果を第１図に示す。図に
おいて、Ｘ印の条件てはプラグ抜けあるいはちきれか発
生し、○印の条件では前記のようなトラブルの発生はな
かった。外径減少率（％）と肉厚減少率（％）の比Ｙと
断面減少率（％）Ｘか（１）式および（２）式を満たす
条件で行うことによってプラグ抜けあるいはちきれか発
生しない良好な芯引加工を行うことが可能となった。Fig. 1 shows the results of conducting a wide range of core experiments and studying various factors regarding the core method for coiled steel pipes. In the figure, under the conditions marked with an "X", either the plug came off or the plug broke, and under the conditions marked with an "O", the above-mentioned troubles did not occur. If the ratio Y of the outer diameter reduction rate (%) and the wall thickness reduction rate (%) and the cross-sectional reduction rate (%) It became possible to perform a good core drawing process without
Ｙ ≦０．００１８ （Ｘ −１５）２ ＋０．５−（
１）１５≦Ｘ≦５０ −（２）すなわち
、断面減少率Ｘについては１５％未満てはプラグ抜けが
発生し、５０％超ではちぎれ焼き付きが発生する。安定
して浮動プラグ芯用を行うのは１５≦Ｘ≦５０である。Y ≦0.0018 (X −15)2 +0.5−(
1) 15≦X≦50 - (2) That is, if the area reduction rate X is less than 15%, plugging will occur, and if it exceeds 50%, tearing and burning will occur. The condition for stable floating plug core is 15≦X≦50.
また外径減少率Ａ（％）と肉厚減少率Ｂ（％）との比Ｙ
＝Ａ／Ｂについては、Ｙ ＞０．００１８ （Ｘ−１５
）２＋ ０．５ （Ｄ範囲テハヒヒリやプラグくい込み
不良で安定した芯引加工か不可能である。Also, the ratio Y of the outer diameter reduction rate A (%) and the wall thickness reduction rate B (%)
For =A/B, Y >0.0018 (X-15
) 2+ 0.5 (It is impossible to perform stable core drawing due to cracking in the D range or poor plug penetration.)
［実施例］
（１） Ｃ： ０．１（ｎ、Ｓｉ：０．Ｏ＋！６、Ｍｎ
：０．３０！Ｉｉの炭素鋼からなり、外径： １５．９
ｍｍ、肉厚２．４ｍｍ 、長さ：約９００ｍのコイル状
の金属管てあって、内外面が燐酸亜鉛による造膜が施さ
れているものを、壱戻し機にセットし、矯直し、超硬合
金製のフローテインクプラグを挿入した後、プレスによ
り先付は加工し、ダイスをとおして外径： Ｉｌ、Ｏｍ
ｍ、肉厚、２．０ｍｍに芯引加工し、１５００Ｉ１１の
コイル状鋼管を製造した。コノ時の条件はＸ ＝ ４４
．５亀、 Ｙ ＝ ０．５５テある。引抜管の内外面は
、いずれも疵の発生かなく、美麗な表面性状を呈してい
た。[Example] (1) C: 0.1(n, Si: 0.O+!6, Mn
:0.30! Made of Ii carbon steel, outer diameter: 15.9
A coiled metal tube with a wall thickness of 2.4 mm and a length of approximately 900 m, whose inner and outer surfaces have been coated with zinc phosphate, is set in a straightening machine, straightened, and super After inserting a hard metal float ink plug, the tip is processed using a press, and the outer diameter: Il, Om is processed through a die.
A 1500I11 coiled steel pipe was produced by core drawing to a thickness of 2.0 mm. The condition at this time is X = 44
．． There are 5 turtles, Y = 0.55 te. The inner and outer surfaces of the drawn tube were free from any flaws and had beautiful surface textures.
（２） Ｃ： ０．０２％ｉ、 Ｃｒ：１８Ｌ Ｎｉ：
８！にのステンレス鋼からなり、外径： ２５．４ｍｍ
、肉厚３．５ｍＬ１１．長さ：約４００ｍのコイル状の
金属管てあって、内外面が蓚酸亜鉛による造膜が施され
ているものを、巻戻し機にセットし、矯直し、超硬合金
製のフローテインクプラグを挿入した後、ダイスをとお
して、外径： １８．０ｍｍ、肉厚： ３．０ｍｍに芯
引加工し長さ６５０ｍｍのコイル状鋼管を製造した。こ
の時の条件はＸ＝４１．７９６． Ｙ ＝ ０．４８で
ある。引抜管の内外面は、いずれも疵の発生がない美麗
な表面性状を呈していた。(2) C: 0.02%i, Cr:18L Ni:
8! Made of stainless steel, outer diameter: 25.4mm
, wall thickness 3.5mL11. Length: Approximately 400m of coiled metal pipe, whose inner and outer surfaces are coated with zinc oxalate, is set in an unwinding machine, straightened, and a float ink plug made of cemented carbide is attached. After inserting, the tube was cored through a die to have an outer diameter of 18.0 mm and a wall thickness of 3.0 mm to produce a coiled steel tube with a length of 650 mm. The condition at this time is X=41.796. Y = 0.48. Both the inner and outer surfaces of the drawn tube had beautiful surface properties with no scratches.
［発明の効果］
本発明により、疵のない美麗な表面性状を有する細径コ
イル状鋼管を、能率よく、少量の潤滑剤で、歩留りよく
製造することかできる。[Effects of the Invention] According to the present invention, a small diameter coiled steel pipe having a beautiful surface without defects can be manufactured efficiently and with a high yield using a small amount of lubricant.
また、本発明によフて引き抜かれたコイル状金属管は、
必要に応じて軟化焼鈍を行って配管工事に直接使用され
たり、あるいは、さらに適宜引抜加工や曲げ加工に供す
ることか出来るため、極めて経済的な効果をあげること
か出来る。Moreover, the coiled metal tube drawn according to the present invention is
If necessary, it can be softened and annealed and used directly for piping work, or it can be further subjected to drawing or bending as appropriate, so it can be extremely economical.
本発明によれば、少量の潤滑剤て長尺のコイル状鋼管か
ら長尺の高寸法積度鋼管の製造が可能となり、顕著な経
済的効果が発揮できる。According to the present invention, it is possible to manufacture a long, high-dimensional, bulky steel pipe from a long, coiled steel pipe with a small amount of lubricant, and a remarkable economic effect can be exhibited.
第１図は芯用方法における断面減少率と肉厚減少率／外
径減少率の関係を示す図である。第２図は本発明の通用
対象となる８引加工方法の説明図である。FIG. 1 is a diagram showing the relationship between the cross-sectional reduction rate and the wall thickness reduction rate/outer diameter reduction rate in the core method. FIG. 2 is an explanatory diagram of an 8-draw processing method to which the present invention applies.
Claims (1)
いて、外径減少率（％）と肉厚減少率（％）の比Ｙと断
面減少率（％）Ｘが下記（１）式および（２）式を満た
す条件で行うことを特徴とするコイル状鋼管の芯引加工
方法。 Ｙ≦０．００１８（Ｘ−１５）＾２＋０．５…（１）１
５≦Ｘ≦５０…（２）[Claims] 1. In core drawing of a coiled steel pipe using a floating plug, the ratio Y of the outer diameter reduction rate (%) to the wall thickness reduction rate (%) and the cross-section reduction rate (%) X are as follows: A method for coring a coiled steel pipe, characterized in that it is carried out under conditions that satisfy equations (1) and (2). Y≦0.0018(X-15)^2+0.5…(1)1
5≦X≦50…(2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32472590A JPH0794046B2 (en) | 1990-11-27 | 1990-11-27 | How to core a coiled steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32472590A JPH0794046B2 (en) | 1990-11-27 | 1990-11-27 | How to core a coiled steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04197513A true JPH04197513A (en) | 1992-07-17 |
| JPH0794046B2 JPH0794046B2 (en) | 1995-10-11 |
Family
ID=18169012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32472590A Expired - Lifetime JPH0794046B2 (en) | 1990-11-27 | 1990-11-27 | How to core a coiled steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0794046B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361319A (en) * | 2001-06-05 | 2002-12-17 | Sumitomo Metal Ind Ltd | Method for manufacturing seamless steel tube excellent in internal smoothness and seamless steel tube |
| CN103639214A (en) * | 2013-11-28 | 2014-03-19 | 青岛蓝图文化传播有限公司市南分公司 | Coil drawing process of red copper tube for air conditioner |
| WO2016139931A1 (en) * | 2015-03-03 | 2016-09-09 | Ｊｆｅスチール株式会社 | Electric resistance welded steel pipe having recognizable seam, and method for manufacturing same |
| CN107710525A (en) * | 2015-12-31 | 2018-02-16 | 深圳市大富方圆成型技术有限公司 | A kind of apparatus and method for manufacturing flat metal tube |
| CN108067514A (en) * | 2017-10-10 | 2018-05-25 | 天津冶金集团天材科技发展有限公司 | A kind of tubing core-removing device |
-
1990
- 1990-11-27 JP JP32472590A patent/JPH0794046B2/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361319A (en) * | 2001-06-05 | 2002-12-17 | Sumitomo Metal Ind Ltd | Method for manufacturing seamless steel tube excellent in internal smoothness and seamless steel tube |
| CN103639214A (en) * | 2013-11-28 | 2014-03-19 | 青岛蓝图文化传播有限公司市南分公司 | Coil drawing process of red copper tube for air conditioner |
| WO2016139931A1 (en) * | 2015-03-03 | 2016-09-09 | Ｊｆｅスチール株式会社 | Electric resistance welded steel pipe having recognizable seam, and method for manufacturing same |
| JPWO2016139931A1 (en) * | 2015-03-03 | 2017-04-27 | Ｊｆｅスチール株式会社 | ERW steel pipe with seam portion distinguishable and manufacturing method thereof |
| KR20170107075A (en) * | 2015-03-03 | 2017-09-22 | 제이에프이 스틸 가부시키가이샤 | Electric resistance welded steel pipe having recognizable seam and method for manufacturing same |
| CN107405659A (en) * | 2015-03-03 | 2017-11-28 | 杰富意钢铁株式会社 | The electric welded steel pipe and its manufacture method that welding seam part can identify |
| US10369655B2 (en) | 2015-03-03 | 2019-08-06 | Jfe Steel Corporation | Electric resistance welded steel pipe having identifiable seam portion and method for manufacturing the same |
| US11045896B2 (en) | 2015-03-03 | 2021-06-29 | Jfe Steel Corporation | Electric resistance welded steel pipe having identifiable seam portion and method for manufacturing the same |
| CN107710525A (en) * | 2015-12-31 | 2018-02-16 | 深圳市大富方圆成型技术有限公司 | A kind of apparatus and method for manufacturing flat metal tube |
| CN107710525B (en) * | 2015-12-31 | 2019-06-21 | 深圳市大富方圆成型技术有限公司 | A kind of device and method manufacturing flat metal tube |
| CN108067514A (en) * | 2017-10-10 | 2018-05-25 | 天津冶金集团天材科技发展有限公司 | A kind of tubing core-removing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0794046B2 (en) | 1995-10-11 |
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