JPS6363522A - Hot working method for reducing diameter of pipe - Google Patents

Hot working method for reducing diameter of pipe

Info

Publication number
JPS6363522A
JPS6363522A JP20691686A JP20691686A JPS6363522A JP S6363522 A JPS6363522 A JP S6363522A JP 20691686 A JP20691686 A JP 20691686A JP 20691686 A JP20691686 A JP 20691686A JP S6363522 A JPS6363522 A JP S6363522A
Authority
JP
Japan
Prior art keywords
heating
pipe
die
tube
heating element
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
Application number
JP20691686A
Other languages
Japanese (ja)
Inventor
Kiyoshi Hajikano
初鹿野 清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP20691686A priority Critical patent/JPS6363522A/en
Publication of JPS6363522A publication Critical patent/JPS6363522A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To enlarge a rate of diameter reduction and to enable working a small-sized pipe of a difficultly workable material by plastic working a tubular body of a metallic material, etc. while heating between a ceramic mandrel burying a heating element and a die or a roll burying a heating element. CONSTITUTION:The ceramic heating mandrel 2 burying the electric heating element 21 is inserted into the tubular pipe 1 of the metallic material. The ceramic mandrel 2 is heated by supplying an electric current from a top fitting part 11 and an opening end part of the tubular body 1 is gripped by a catcher 11 and pulled in the die 3 heated by supplying the electric current to the buried heating body 4, the plastic working is performed between both heating elements. In this internal and external heating, the tubular body 1 is made possible to safely enlarge the diameter reducing rate and even the pipe of difficultly workable material such as molybdenum, titantum, etc., is made possible to draw excellently into small-sized pipe having <=3mm diameter and a manufacturing cost becomes inexpensive. Moreover, the heated roll may be used in place of the die 3.

Description

【発明の詳細な説明】 (イ) 産業上の利用分野 本発明は管形状の管の内外の両方向から加熱して、減径
加工する方法に係わるものである。
DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method for reducing the diameter of a tubular tube by heating it from both the inside and outside directions.

ここに管形状の管のというのは、管又は、管の外周部分
が1部分欠けた状態のものをも含めての管形状の管と称
するものである。例えば、帯形状の板の両側端部を湾曲
させて、突き合せてまた溶接前の形状のものをも含むも
のである。微細管、耐蝕性、耐熱性、モリブデン、チタ
ン等の材質管を内外の両方向から加熱しながら、減径加
工を実施するものである。
Here, the term "tube-shaped tube" refers to a tube or a tube in which a portion of the outer circumferential portion of the tube is missing. For example, it includes a shape in which both ends of a band-shaped plate are curved and butted together before welding. This machine performs diameter reduction processing on fine tubes, corrosion-resistant, heat-resistant tubes made of materials such as molybdenum, titanium, etc., while heating them from both the inside and outside.

(ロ) 従来の技術 従来の加熱しながら、塑性加工をする方法は、主に、外
側からの加熱が主であって、内部からの加熱は困難であ
った。
(B) Prior Art Conventional methods for plastic working while heating mainly involve heating from the outside, and heating from the inside is difficult.

殊に3mmφ以下の外径のものを加工するには、加熱雰
囲気中での加工に頼るしかなかった。しかし加熱雰囲気
中でも、微細管の場合には、内部に熱対流が発生する事
は少なく、充分でない。又、加工はコストも高く精度の
優れた物は出来ない。
In particular, in order to process objects with an outer diameter of 3 mmφ or less, there was no choice but to rely on processing in a heated atmosphere. However, even in a heated atmosphere, in the case of a microtube, thermal convection rarely occurs inside the tube, which is not sufficient. Furthermore, processing costs are high and products with excellent precision cannot be produced.

(ハ) 発明が解決しようとする問題点この発明はモリ
ブデン、チタン等の熱間加工を必要とする材質のもので
、殊に3mmφ以下の外径のものを、熱間加工するに適
する加工方法を目的とするものである。
(c) Problems to be Solved by the Invention This invention provides a processing method suitable for hot working materials such as molybdenum, titanium, etc., which require hot working, especially those with an outer diameter of 3 mmφ or less. The purpose is to

(ニ) 問題点を解決する為の手段 この発明は、内外の両方向から、加熱を付学して管形状
の管を熱間加工する手段によって、3 m mφ以下の
外径の管形状の管のものでも加工を可能にするものであ
る。
(d) Means for Solving the Problems The present invention is capable of producing a tubular tube with an outer diameter of 3 mm or less by means of hot working the tube by applying heating from both the inside and outside directions. This makes it possible to process even the most common materials.

この発明の方法を図面によって説明すれば、第1図は、
本発明に係わる1実施例の方法であって、主要の部分図
である。1は加工材の管形状の管である。11は、先付
部分である。1の管形状の管の内孔内に、2の加熱心棒
を押花させる。2の加熱心棒は、セラミック材質でその
中に21の通電発熱体が埋設しであるものである。2の
加熱心棒には、外殻体にステンレス材質を使用しである
物を使用する事が出来る。例えばシースヒータの棒状の
ものを使用する事も可能である。しかしその場合には、
加熱温度に成る一定の条件が必要となる。3はダイスで
ある。4は3のダイスの中に内設されている通電発熱体
である。この4の通電発熱体は、予め絶縁処理をしてい
る、しかし3のダイスが絶縁性のあるセラミック材質の
場合には、その必要性が無い場合もある。41は、4の
通電発熱体に接続されるターミナルである。5.は、引
抜をする為のキャッチャ一部分である。
If the method of this invention is explained with reference to the drawings, FIG.
1 is a main partial view of a method according to an embodiment of the present invention; FIG. 1 is a tube shaped like a processed material. 11 is a prefix part. A heating mandrel (2) is pressed into the inner hole of the tubular tube (1). The heating mandrel No. 2 is made of a ceramic material and has 21 current-carrying heating elements embedded therein. For the second heating mandrel, one whose outer shell is made of stainless steel can be used. For example, it is also possible to use a rod-shaped sheath heater. But in that case,
Certain conditions resulting in heating temperature are required. 3 is a die. 4 is an energized heating element installed inside the die 3. The energizing heating element 4 is insulated in advance, but if the die 3 is made of an insulating ceramic material, this may not be necessary. 41 is a terminal connected to the energized heating element 4. 5. is a part of the catcher for pulling out.

この図に於いては、ダイス加工による熱間加工の例を挙
げているが、ロールによる場合もある。この場合には、
ダイスの代わりにロールで、外周を熱間加工をして、内
部では、2のような構造の加熱心棒を使用する。5はキ
ャッチャ−である。
This figure shows an example of hot working by die working, but rolls may also be used. In this case,
The outer periphery is hot worked using a roll instead of a die, and a heating mandrel with a structure like 2 is used inside. 5 is the catcher.

(ホ) 作用 この発明の具体的1実施例の作用を述べれば、1の管形
状の管の引抜材を3の引抜ダイスによって引抜加工する
際に、ダイス側からの加熱を、2の加熱心棒からの加熱
と同時に内外から、付与することが出来る。加熱温度の
高低によって、前述のセラミックダイス、ロール例えば
ジルコニア材質のダイス、ロールを使用する必要がある
。加工材には、耐熱用の固形潤滑剤を塗布して置く必要
がある。
(e) Function To describe the function of a specific embodiment of the present invention, when drawing a tube-shaped pipe material (1) using a drawing die (3), heating from the die side is applied to the heating mandrel (2). It can be applied from inside and outside at the same time as heating from outside. Depending on the heating temperature, it is necessary to use the aforementioned ceramic dice and rolls, for example, zirconia material dice and rolls. It is necessary to apply heat-resistant solid lubricant to the workpiece.

この発明の方法によれば、モリブデン、チタン等の熱間
加工を必要とするもので、殊に、3mmφ以下のような
、外径の微小なものの管形状の管のものを製作可能とす
るものである。
According to the method of this invention, it is possible to manufacture tube-shaped tubes that require hot working of molybdenum, titanium, etc., and have minute outer diameters, especially those with a diameter of 3 mm or less. It is.

(へ) 発明の効果 この発明の効果は、管形状の管の引抜材を内外から、加
熱する熱間加工をするので、相当の太きなReduct
ionを付与出来るものである。
(f) Effects of the Invention The effects of this invention are that the drawn material of the tube-shaped tube is hot-processed by heating it from the inside and outside.
ion can be added.

又モリブデン、チタン等の難加工材の微細管を低コスト
で製作可能とする事が出来るものである。
Furthermore, it is possible to manufacture microtubes made of difficult-to-process materials such as molybdenum and titanium at low cost.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、この発明の1実施例の1部断面の主要部分図
である。 1・・・管形状の管。11・・・先付部分。2・・・発
熱心棒。21.4・・・通電発熱体。3・・・ダイス。 41・・・ターミナル。5・・・キャッチャ−
FIG. 1 is a partial cross-sectional view of the main parts of one embodiment of the present invention. 1...Tube-shaped tube. 11... Advance part. 2... A hot rod. 21.4...Electric heating element. 3... Dice. 41...Terminal. 5...Catcher

Claims (1)

【特許請求の範囲】[Claims] 金属材質等の管形状の管内に、埋設した発熱体を有する
セラミックの心棒を設置して、当該管形状の外周から、
発熱体を埋設してなるダイス、ロール等によって、当該
管形状の内部及外周の両方向から、加熱しながら塑性加
工を実施することを特徴とする管形状の管の加熱減径加
工方法。
A ceramic core with an embedded heating element is installed inside a tube-shaped tube made of metal material, etc., and from the outer periphery of the tube-shaped tube,
A method for heating and reducing the diameter of a tubular tube, characterized by performing plastic working while heating both the inside and the outer periphery of the tube using a die, roll, etc. in which a heating element is embedded.
JP20691686A 1986-09-04 1986-09-04 Hot working method for reducing diameter of pipe Pending JPS6363522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20691686A JPS6363522A (en) 1986-09-04 1986-09-04 Hot working method for reducing diameter of pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20691686A JPS6363522A (en) 1986-09-04 1986-09-04 Hot working method for reducing diameter of pipe

Publications (1)

Publication Number Publication Date
JPS6363522A true JPS6363522A (en) 1988-03-19

Family

ID=16531201

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20691686A Pending JPS6363522A (en) 1986-09-04 1986-09-04 Hot working method for reducing diameter of pipe

Country Status (1)

Country Link
JP (1) JPS6363522A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105344813A (en) * 2015-11-13 2016-02-24 重庆市迈鸿食品有限公司 Integrated die
CN105344814A (en) * 2015-11-13 2016-02-24 重庆市迈鸿食品有限公司 Pipe die structure
CN105344812A (en) * 2015-11-13 2016-02-24 重庆市迈鸿食品有限公司 Die for improving yield
CN105344815A (en) * 2015-11-13 2016-02-24 重庆市迈鸿食品有限公司 Die
CN105382099A (en) * 2015-11-13 2016-03-09 重庆市迈鸿食品有限公司 Mold structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105344813A (en) * 2015-11-13 2016-02-24 重庆市迈鸿食品有限公司 Integrated die
CN105344814A (en) * 2015-11-13 2016-02-24 重庆市迈鸿食品有限公司 Pipe die structure
CN105344812A (en) * 2015-11-13 2016-02-24 重庆市迈鸿食品有限公司 Die for improving yield
CN105344815A (en) * 2015-11-13 2016-02-24 重庆市迈鸿食品有限公司 Die
CN105382099A (en) * 2015-11-13 2016-03-09 重庆市迈鸿食品有限公司 Mold structure

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