JP2602320B2 - Bending method of titanium pipe - Google Patents
Bending method of titanium pipeInfo
- Publication number
- JP2602320B2 JP2602320B2 JP1074957A JP7495789A JP2602320B2 JP 2602320 B2 JP2602320 B2 JP 2602320B2 JP 1074957 A JP1074957 A JP 1074957A JP 7495789 A JP7495789 A JP 7495789A JP 2602320 B2 JP2602320 B2 JP 2602320B2
- Authority
- JP
- Japan
- Prior art keywords
- bending
- pipe
- filler
- chemical milling
- titanium pipe
- 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 - Lifetime
Links
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は従来の加工方法では加工不可能な曲げ半径と
外径との比をもったチタンパイプの曲げ成形方法に関す
るものである。Description: TECHNICAL FIELD The present invention relates to a method for bending a titanium pipe having a ratio between a bending radius and an outer diameter that cannot be processed by a conventional processing method.
（従来技術） 従来パイプの曲げ加工に際し、偏肉防止のためパイプ
内部に砂や低融点合金等の充填材を充填して曲げ加工
し、曲げ加工後にこれら充填材を除去する技術はしられ
ている。しかしこのような充填材のうち、砂は精密加工
には不向きであり、又低融点合金では熱間（温間）加工
（Tiでは約900℃に加熱される）には使用できないとい
う問題があった。(Prior art) Conventionally, at the time of bending a pipe, there is a technique for filling the inside of the pipe with a filler such as sand or a low melting point alloy to bend the pipe to prevent uneven thickness, and removing the filler after the bending. I have. However, among such fillers, sand is not suitable for precision machining, and low melting point alloys cannot be used for hot (warm) working (Ti is heated to about 900 ° C). Was.
（発明により解決しようとする課題） 従来不可能であった曲げ半径／管の外径が1.5以下のT
iやTi合金製のパイプの曲げ加工方法を提供することを
目的とする。(Problem to be solved by the invention) T where the bending radius / outer diameter of the pipe was 1.5 or less, which was impossible in the past.
An object of the present invention is to provide a method for bending a pipe made of i or Ti alloy.
（発明による課題の解決手段） Tiパイプ内にパイプ材１の内径に略等しい外径を有す
る金属丸棒よりなる充填材２を充填し、これを加熱して
熱間曲げ加工を行ったのち、充填材２をケミカルミーリ
ング加工にて除去して精度の高い加工品を得ようにし
た。(Means for Solving the Problems According to the Invention) A filler 2 made of a metal round bar having an outer diameter substantially equal to the inner diameter of the pipe material 1 is filled in a Ti pipe, and heated and subjected to hot bending. The filler 2 was removed by chemical milling to obtain a highly accurate processed product.
又、曲げ加工後充填材２に中孔６をドリルであけたの
ち、ケミカルミーリング加工するようにした。Further, after the bending process, a hole 6 was drilled in the filler 2 and then a chemical milling process was performed.
（実施例） 以下図面を参照しつゝ説明する。(Example) Hereinafter, description will be made with reference to the drawings.
１）Tiパイプ材１の内部に偏肉防止用の充填材２とし
て、パイプ材１の内径にほぼ等しい外径を有する鉄や鉄
合金、又はアルミの丸棒を挿入する（第１図）。1) A round bar of iron, iron alloy, or aluminum having an outer diameter substantially equal to the inner diameter of the pipe material 1 is inserted into the Ti pipe material 1 as a filler 2 for preventing uneven thickness (FIG. 1).
２）これを曲げ加工可能な温度まで加熱する（約900
℃）。2) Heat it to a temperature where it can be bent (about 900
° C).
３）次に上型３と下型４よりなる曲げ型を使用し、プレ
ス機（図示しない）で押曲げ加工する（第２図及び第３
図）。3) Next, using a bending die composed of an upper die 3 and a lower die 4, press-bending is performed by a press machine (not shown) (FIGS. 2 and 3).
Figure).
４）室温まで放冷し、ショットブラスト（図示しない）
にて表面の汚れを除去した後、所定の寸法に切断する。4) Allow to cool to room temperature and shot blast (not shown)
After removing dirt on the surface with, cut into predetermined dimensions.
５）ケミカルミーリングによりパイプ内部の充填材２を
溶解し除去する。尚、ケミカルミーリング液はチタンを
侵さず、充填金属のみ溶解できる液を選択し使用する。
例えば、鉄の場合、塩酸、硝酸等の混酸溶液、アルミの
場合、苛性ソーダ溶液を使用し得る。5) The filler 2 inside the pipe is dissolved and removed by chemical milling. The chemical milling liquid is selected and used without disturbing titanium and dissolving only the filling metal.
For example, in the case of iron, a mixed acid solution such as hydrochloric acid and nitric acid can be used, and in the case of aluminum, a caustic soda solution can be used.
なおケミカルミーリングに際し、４）の工程で切断し
たのち、第５図の如くドリルにて両端から中孔６を穿孔
したのちケミカルミーリングを行えば、ケミカルミーリ
ング液が内部まで浸入し、加工速度を速めることができ
る。In the case of chemical milling, after cutting in step 4), as shown in FIG. 5, by drilling holes 6 from both ends with a drill and then performing chemical milling, the chemical milling liquid penetrates into the inside and increases the processing speed. be able to.
６）かくして、例えば第４図に示すような完成したエル
ボＢが得られる。6) Thus, a completed elbow B as shown in FIG. 4, for example, is obtained.
（効果） パイプ内部に鉄やアルミの金属丸棒よりなる充填材を
充填して曲げ加工を行ったのち、内部充填材の除去にケ
ミカルミーリング加工を使用するようにしたので、曲げ
部におけるパイプ偏平化を防止でき、精度の良い曲げ成
形品を得ることができる。(Effect) After filling the inside of the pipe with a filler consisting of a metal round bar of iron or aluminum and performing bending, the chemical milling process is used to remove the internal filler, so the pipe is flat at the bent part. This can prevent the formation of a bent product with high accuracy.
又、充填材として鉄や鉄合金、アルミ棒等の金属丸棒
を用いることにより加熱時に溶融の心配がないので、熱
間（温間）加工を行なうことができる。Also, by using a metal round bar such as iron, an iron alloy or an aluminum bar as a filler, there is no fear of melting during heating, so that hot (warm) working can be performed.
さらに、曲げ加工後充填材に中孔６をあけたのち、ケ
ミカルミーリング加工することにより、加工速度を一段
と上げることが可能となった。Furthermore, after drilling the hole 6 in the filler after bending, chemical milling is performed, so that the processing speed can be further increased.
第１図は本発明の曲げ成形における素材の断面図。 第２図は曲げ成形に使用する曲げ型を示す。 第３図は上型と下型の型割面が合致し成形された状態を
示す。 第４図は成形されたエルボの断面図。 第５図は曲げ成形され素材のケミカルミーリング前の別
の実施例を示す。 図において； Ａ……素材、Ｂ……エルボ １……Tiパイプ材、２……充填材 ３……上型、４……下型 ５……型割面、６……中孔FIG. 1 is a cross-sectional view of a material in bending according to the present invention. FIG. 2 shows a bending die used for bending. FIG. 3 shows a state in which the mold halves of the upper mold and the lower mold match and are formed. FIG. 4 is a sectional view of a molded elbow. FIG. 5 shows another embodiment of the bent material before chemical milling. In the figure: A: Material, B: Elbow 1 ... Ti pipe material, 2 ... Filler 3 ... Upper die, 4 ... Lower die 5 ... Molding surface, 6 ... Hole
───────────────────────────────────────────────────── フロントページの続き (72)発明者 荒牧 英三 東京都田無市谷戸町２丁目１番１号 住 友重機械工業株式会社田無製造所内 (56)参考文献 特開 昭52−125254（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Eizo Aramaki 2-1-1, Yato-cho, Tanashi-shi, Tokyo In the Tanashi Works of Sumitomo Heavy Industries, Ltd. (56) References JP-A-52-125254 (JP, A)
Claims (2)
しい外径を有する金属丸棒よりなる充填材を充填し、こ
れを加熱して熱間曲げ加工を行ったのち、充填材をケミ
カルミーリング加工にて除去することを特徴とするチタ
ンパイプの曲げ成形法。1. A Ti pipe is filled with a filler made of a metal round bar having an outer diameter substantially equal to the inner diameter of the pipe material (1), and the filler is heated and subjected to hot bending. A titanium pipe by chemical milling.
ちケミカルミーリング加工することを特徴とする請求項
第１項記載のチタンパイプの曲げ成形法。2. The method of bending a titanium pipe according to claim 1, wherein after the bending, a hole is formed in the filler and then a chemical milling is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1074957A JP2602320B2 (en) | 1989-03-29 | 1989-03-29 | Bending method of titanium pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1074957A JP2602320B2 (en) | 1989-03-29 | 1989-03-29 | Bending method of titanium pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02255221A JPH02255221A (en) | 1990-10-16 |
| JP2602320B2 true JP2602320B2 (en) | 1997-04-23 |
Family
ID=13562310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1074957A Expired - Lifetime JP2602320B2 (en) | 1989-03-29 | 1989-03-29 | Bending method of titanium pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2602320B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012096392A1 (en) | 2011-01-11 | 2012-07-19 | Sintokogio, Ltd. | Method and tool for bending titanium member |
| CN106835137A (en) * | 2015-12-03 | 2017-06-13 | 哈尔滨飞机工业集团有限责任公司 | A kind of process of bend pipe variable cross-section milling |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753118A (en) * | 2013-12-09 | 2014-04-30 | 北京航星机器制造有限公司 | Bending method of large-diameter thin-wall aluminum pipe and die |
| JP6818269B2 (en) * | 2015-07-01 | 2021-01-20 | 公立大学法人奈良県立医科大学 | Implantable Catheter Port and Method for Manufacturing Implantable Catheter Port |
| CN105642721B (en) * | 2016-01-11 | 2017-07-04 | 淮安娇子金属科技有限公司 | A kind of high-frequency heated bending technique of titanium alloy workpiece |
| CN111842576B (en) * | 2020-07-15 | 2022-05-17 | 萧孝良 | Titanium tube bending process and manufacturing method of bicycle bent handle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52125254A (en) * | 1976-04-14 | 1977-10-20 | Nec Corp | Manufacture for bent waveguide |
-
1989
- 1989-03-29 JP JP1074957A patent/JP2602320B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012096392A1 (en) | 2011-01-11 | 2012-07-19 | Sintokogio, Ltd. | Method and tool for bending titanium member |
| CN106835137A (en) * | 2015-12-03 | 2017-06-13 | 哈尔滨飞机工业集团有限责任公司 | A kind of process of bend pipe variable cross-section milling |
| CN106835137B (en) * | 2015-12-03 | 2019-03-19 | 哈尔滨飞机工业集团有限责任公司 | A kind of process of bend pipe variable cross-section milling |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02255221A (en) | 1990-10-16 |
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