JPS61231147A - Manufacture of semi-hard copper tube - Google Patents
Manufacture of semi-hard copper tubeInfo
- Publication number
- JPS61231147A JPS61231147A JP7135985A JP7135985A JPS61231147A JP S61231147 A JPS61231147 A JP S61231147A JP 7135985 A JP7135985 A JP 7135985A JP 7135985 A JP7135985 A JP 7135985A JP S61231147 A JPS61231147 A JP S61231147A
- Authority
- JP
- Japan
- Prior art keywords
- copper tube
- semi
- rigid
- manufacturing
- manufacture
- 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
Landscapes
- Metal Extraction Processes (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は半硬質銅管の製造方法に関し、さらに詳しくは
、機械的性質のバラツキの少ない半硬質銅管を製造する
方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a semi-rigid copper tube, and more particularly to a method for manufacturing a semi-rigid copper tube with less variation in mechanical properties.
［従来技術１
従来上り行なわれている銅管の調質方法には以下説明す
るような方法があるが、これには夫々に問題点が存在し
ている。即ち、
（１）直管銅管（製品外径の約１．１倍）を口付し、ロ
ーラーハース型炉において焼鈍を行ない、次いで、抽伸
機により約１０％抽伸ダイ入で縮径（上り抽伸）を行な
い、鼓型ロールによる矯正後探傷し、上り切断、面取り
後洗浄を行なう方法。[Prior Art 1] Conventionally, there are methods for refining copper tubes as described below, but each method has its own problems. That is, (1) A straight copper tube (approximately 1.1 times the outer diameter of the product) is spouted, annealed in a roller hearth type furnace, and then reduced in diameter (upward) by approximately 10% in a drawing die using a drawing machine. This method involves straightening with a drum-shaped roll, detecting flaws, and cleaning after up-cutting and chamfering.
この方法は、口付けおよび上り切断屑が銅管１本毎に発
生することや焼鈍以降の取扱いによる不良が発生するこ
と等により歩留りが悪く、かつ、工程が長いという問題
がある。なお、この方法においては、抽伸潤滑油を使用
しているので工程の最後における洗浄処理を行なう必要
がある。This method has problems in that the yield is low and the process is long due to the generation of mouth and upward cutting waste for each copper tube and the occurrence of defects due to handling after annealing. In addition, since this method uses drawn lubricating oil, it is necessary to perform a cleaning treatment at the end of the process.
（２）長尺でコイル状に捲回された銅管（Ｌ ｅｖｅ
ＩＷｏｕｎｄ Ｃｏ１１．ＬＷＣ銅管という。）をロー
ラーハース型炉による焼鈍後にコンバインド仕上機によ
る上り抽伸（抽伸、矯正、探傷、切断、面取り）を行な
ってから洗浄する方法。(2) A long copper tube wound into a coil (L eve
IWound Co11. It is called LWC copper tube. ) is annealed in a roller hearth type furnace, followed by upward drawing (drawing, straightening, flaw detection, cutting, chamfering) using a combined finishing machine, and then cleaning.
この方法は、ＬＷＣ銅管巻取りと半硬質仕上抽伸におい
て仕上機を２度使用するため製造工程における工程管理
を乱すようになる。また、抽伸潤滑油を使用するので工
程の最後における洗浄処理が必要である。This method disturbs the process control in the manufacturing process because the finishing machine is used twice for winding the LWC copper pipe and semi-rigid finishing drawing. Furthermore, since drawn lubricating oil is used, cleaning treatment is required at the end of the process.
（３）焼鈍条件制御による半硬質仕上げを行なう方法も
考えられるが、脱酸銅の場合、Ｐ含有量、その池微量含
有不純物、ローラーノ）−ス炉内バラツキ等により技術
確立が困難であって実揉業方式としては確立していない
。(3) A method of achieving a semi-hard finish by controlling annealing conditions may be considered, but in the case of deoxidized copper, it is difficult to establish this technology due to the P content, trace impurities contained in the copper, and variations in the roller nose furnace. It has not been established as a practical method.
このように一般的には、上記説明した（１）（２）の方
法のように焼鈍後側滑油使用の抽伸ダイスを用いて縮径
加工を行なって半硬質にｔ９１械的性質を調整すること
が行なわれているのである。In this way, in general, as in methods (1) and (2) explained above, after annealing, diameter reduction is performed using a drawing die using lubricant on the side to adjust the T91 mechanical properties to semi-hard. That is what is being done.
［発明が解決しようとする問題点１
本発明は上記に説明したような従来における半硬質銅管
の製造方法における種々の問題点に鑑み、本発明者が鋭
意研究の結果なされたものであり、機械的性質のバラツ
キが少なく、かつ、歩留りが向上し、生産性の高い半硬
質銅管の製造方法を開発したものである。[Problem to be Solved by the Invention 1] The present invention was made as a result of intensive research by the present inventor in view of the various problems in the conventional semi-rigid copper tube manufacturing method as explained above. We have developed a method for manufacturing semi-rigid copper tubes with less variation in mechanical properties, improved yield, and high productivity.
［問題点を解決するための手段］
本発明に係る半硬質銅管の製造方法の特徴とするところ
は、
コイル状に捲回されている銅管を矯正してから連続して
焼鈍を行ない、次いで、半硬質縮径圧延を行ない、さら
に、矯正を行なうことにある。[Means for Solving the Problems] The method for manufacturing a semi-hard copper tube according to the present invention is characterized by: straightening the copper tube wound into a coil shape and then continuously annealing it; Next, semi-hard diameter reduction rolling is performed, and further correction is performed.
本発明に係る半硬質銅管の製造方法について以下詳細に
説明する。The method for manufacturing a semi-rigid copper tube according to the present invention will be described in detail below.
本発明に係る半硬質銅管の製造方法を第１図に示す概略
図により説明する。The method for manufacturing a semi-rigid copper tube according to the present invention will be explained with reference to the schematic diagram shown in FIG.
１はコイル状に捲回された銅管（プルコイル銅管、ＬＷ
Ｃ銅管を含む。）で、肉厚は製品寸法通りに仕上げ、外
径は製品寸法より約１０％大きく仕上げる。この銅管の
外径は、縮径の度合により得られる機械的性質（σ８、
δ、σ０．．）の特性値を考慮して、目的とする特性値
が得られるように予め仕上げておく。1 is a copper tube wound into a coil (pull coil copper tube, LW
Contains C copper tubes. ), the wall thickness is finished according to the product dimensions, and the outer diameter is finished approximately 10% larger than the product dimensions. The outer diameter of this copper tube is determined by the mechanical properties (σ8,
δ, σ0. ．． ) in advance so as to obtain the desired characteristic values.
２は銅管の入側ガイドおよび矯正装置である。2 is a copper tube entrance guide and straightening device.
３は脱脂装置である。3 is a degreasing device.
４は渦流探傷検査コイルである。4 is an eddy current testing coil.
５はインダクションヒーターであり、銅管の焼鈍を行な
って長尺方向の調質バラツキを少なく、均一化させる。Reference numeral 5 denotes an induction heater, which anneales the copper tube to reduce variations in quality in the longitudinal direction and make it uniform.
６は次工程の縮径加工を行なうカセットローラーダイス
へ銅管を送り込むための溝型ロールである。Reference numeral 6 denotes a grooved roll for feeding the copper tube to a cassette roller die that performs diameter reduction processing in the next step.
７は無潤滑による縮径加工を行なうカセットローラーダ
イスである。7 is a cassette roller die that performs diameter reduction processing without lubrication.
８は縮径後の銅管の引出しと矯正を行なう溝型ロールで
ある。8 is a grooved roll for pulling out and straightening the copper pipe after diameter reduction.
９は欠陥部マーキング装置である。9 is a defect marking device.
１０はカッターである。10 is a cutter.
次に、本発明二係ル半硬質銅管の製造方法を説明する。Next, a method for manufacturing the semi-rigid copper tube of the present invention will be explained.
フィル状に捲回された銅管１より銅管を入側ガイド２に
供給し、次に、脱脂装置３で矯正された銅管の外面の脱
脂を行なってから、インダクションヒーター５で焼鈍を
行なり１１、銅管の長手方向の調質のバラツキを均一化
させてか呟溝型ロール６によって、カセットローラーダ
イス７に送る。The copper tube is fed from the copper tube 1 wound into a film to the entry guide 2, and then the outer surface of the straightened copper tube is degreased by the degreaser 3, and then annealed by the induction heater 5. At step 11, the dispersion in thermal quality in the longitudinal direction of the copper tube is made uniform, and the copper tube is sent to a cassette roller die 7 by a groove-shaped roll 6.
このカセットローラーダイス７においては、無潤滑方式
により大兄１０％の縮径加工を行なうことにより半硬質
調質銅管が得られる。In this cassette roller die 7, a semi-hard annealed copper tube can be obtained by reducing the diameter by 10% using a non-lubricating method.
次いで、千鳥状に配置した溝型ロール８により縮径後の
銅管の引出しおよび矯正を行なう。Next, the diameter-reduced copper tube is pulled out and straightened using grooved rolls 8 arranged in a staggered manner.
このようにし得られた半硬質銅管は、切断されて定尺の
半硬質銅管製品（５０００ｍｍ１）とするか、短尺製品
にさらに切断するか、コイル状に捲回するか、ＬＷＣ製
品とするかの何れかによって出荷される。The semi-rigid copper tube obtained in this way is cut into regular length semi-rigid copper tube products (5000 mm1), further cut into short products, wound into a coil, or made into LWC products. shipped by either.
本発明に係る半硬質銅管の製造方法においては、引張強
さくσＢ）がＪＩＳ規格では２５〜３３ｋｇｆ／ｍｍ２
であるが、本発明に係る半硬質銅管の製造方法によれば
バラツキの範囲は２〜３ｋｇｆ／＋ｎｍ２であって、バ
ラツキが極めて少なく、また、ラインスピードは１８０
ｍ／＋ａｉｎであって、従来の４Ｏ−６０ａ＋／ｍｉｎ
に比して３〜４倍にもな１）、生産性が著しく向上し、
かつ、歩留りが極めて向上している。In the method for manufacturing a semi-rigid copper tube according to the present invention, the tensile strength σB) is 25 to 33 kgf/mm2 according to the JIS standard.
However, according to the method for manufacturing semi-rigid copper tubes according to the present invention, the range of variation is 2 to 3 kgf/+nm2, which is extremely small, and the line speed is 180 kgf/+nm2.
m/+ain, conventional 4O-60a+/min
Productivity is significantly improved by 3 to 4 times compared to 1).
Moreover, the yield is extremely improved.
［発明の効果１
以上説明したように、本発明に係る半硬質銅管の製造方
法は上記の構成を有しているものであるから、コイル状
に捲回された銅管から製品まで一貫生産が可能であり、
かつ、ラインスピードが速いので生産性に優れ、かつ、
機械的性質のバラツキの範囲が極めて少なく、無潤滑縮
径であるので脱脂工程が省略することができるという効
果を有するものである。[Effect of the invention 1 As explained above, since the method for manufacturing a semi-rigid copper tube according to the present invention has the above-mentioned configuration, it is possible to perform integrated production from the coiled copper tube to the product. is possible,
In addition, the line speed is fast, so productivity is excellent, and
The range of variation in mechanical properties is extremely small, and since the diameter is reduced without lubrication, the degreasing step can be omitted.
第１図は本発明に係る半硬質銅管の製造方法の概略説明
図である。
１・・コイル状に捲回された銅管、２・・入側〃イド、
３・・脱脂装置、４・・探傷装置、５・・インダクショ
ンヒーター、６・・溝型ロール、７・・カセットローラ
ーダイス、８・・溝型ロール、９・・欠陥部マーキング
装置、１０・・カッター。FIG. 1 is a schematic explanatory diagram of a method for manufacturing a semi-rigid copper tube according to the present invention. 1. Copper tube wound into a coil, 2. Inlet side,
3. Degreasing device, 4. Flaw detection device, 5. Induction heater, 6. Groove roll, 7. Cassette roller die, 8. Groove roll, 9. Defect marking device, 10. cutter.
Claims (1)
焼鈍を行ない、次いで、半硬質縮径圧延を行ない、さら
に、矯正を行なうことを特徴とする半硬質銅管の製造方
法。A method for manufacturing a semi-rigid copper tube, which comprises straightening a copper tube wound into a coil shape, successively annealing the tube, then performing semi-rigid diameter reduction rolling, and further straightening the tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7135985A JPS61231147A (en) | 1985-04-04 | 1985-04-04 | Manufacture of semi-hard copper tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7135985A JPS61231147A (en) | 1985-04-04 | 1985-04-04 | Manufacture of semi-hard copper tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61231147A true JPS61231147A (en) | 1986-10-15 |
Family
ID=13458218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7135985A Pending JPS61231147A (en) | 1985-04-04 | 1985-04-04 | Manufacture of semi-hard copper tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61231147A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS577344A (en) * | 1980-05-10 | 1982-01-14 | Kabel Metallwerke Ghh | Method and device for treating copper pipe |
-
1985
- 1985-04-04 JP JP7135985A patent/JPS61231147A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS577344A (en) * | 1980-05-10 | 1982-01-14 | Kabel Metallwerke Ghh | Method and device for treating copper pipe |
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