JPS61158302U - - Google Patents

Info

Publication number
JPS61158302U
JPS61158302U JP4161485U JP4161485U JPS61158302U JP S61158302 U JPS61158302 U JP S61158302U JP 4161485 U JP4161485 U JP 4161485U JP 4161485 U JP4161485 U JP 4161485U JP S61158302 U JPS61158302 U JP S61158302U
Authority
JP
Japan
Prior art keywords
pipe
expanding
taper
tapered part
diameter
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
JP4161485U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP4161485U priority Critical patent/JPS61158302U/ja
Publication of JPS61158302U publication Critical patent/JPS61158302U/ja
Pending legal-status Critical Current

Links

Description

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

第１図は本考案の全体説明図、第２図は本考案
の適用例の説明図、第３図は偏肉率とテーパーと
の関係図表である。 １；マンドレル、２；マンドレル支持棒、３；
素管、４；押し出し用液圧プレス。 FIG. 1 is an overall explanatory diagram of the present invention, FIG. 2 is an explanatory diagram of an application example of the present invention, and FIG. 3 is a relationship chart between thickness unevenness and taper. 1; mandrel, 2; mandrel support rod, 3;
Base pipe, 4; Hydraulic press for extrusion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 円筒状の素管ガイド部と仕上用ストレート部と
を、拡管用テーパー部を介在して連接し、拡管用
テーパー部に、３／６４＜Ｄ−ｄｌ＜１（但し、
Ｄ：拡管径、ｄ：素管径、ｌ：テーパー長）を満
足するテーパーを形成してなる継目無し鋼管拡管
押し出し用マンドレル。 The cylindrical raw pipe guide part and the straight part for finishing are connected through the tapered part for expanding the pipe, and the tapered part for expanding the pipe has a shape of 3/64<D-dl<1 (however,
D: expanded pipe diameter, d: raw pipe diameter, l: taper length) A seamless steel pipe expanding and extruding mandrel formed with a taper that satisfies the following.
JP4161485U 1985-03-25 1985-03-25 Pending JPS61158302U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4161485U JPS61158302U (en) 1985-03-25 1985-03-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4161485U JPS61158302U (en) 1985-03-25 1985-03-25

Publications (1)

Publication Number Publication Date
JPS61158302U true JPS61158302U (en) 1986-10-01

Family

ID=30551607

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4161485U Pending JPS61158302U (en) 1985-03-25 1985-03-25

Country Status (1)

Country Link
JP (1) JPS61158302U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965974A (en) * 1972-10-30 1974-06-26
JPS5411871A (en) * 1977-06-29 1979-01-29 Kobe Steel Ltd Hot perforating device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965974A (en) * 1972-10-30 1974-06-26
JPS5411871A (en) * 1977-06-29 1979-01-29 Kobe Steel Ltd Hot perforating device

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