JPS59163024A - Production of curved pipe material and press device thereof as well as formed product - Google Patents

Production of curved pipe material and press device thereof as well as formed product

Info

Publication number
JPS59163024A
JPS59163024A JP3800483A JP3800483A JPS59163024A JP S59163024 A JPS59163024 A JP S59163024A JP 3800483 A JP3800483 A JP 3800483A JP 3800483 A JP3800483 A JP 3800483A JP S59163024 A JPS59163024 A JP S59163024A
Authority
JP
Japan
Prior art keywords
pipe
parts
product
shaped
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.)
Pending
Application number
JP3800483A
Other languages
Japanese (ja)
Inventor
Tsutomu Nagai
Yoshio Ogawara
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.)
SHIN NIPPON TANKO KK
SHINNIHON TANKOU KK
Original Assignee
SHIN NIPPON TANKO KK
SHINNIHON TANKOU KK
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 SHIN NIPPON TANKO KK, SHINNIHON TANKOU KK filed Critical SHIN NIPPON TANKO KK
Priority to JP3800483A priority Critical patent/JPS59163024A/en
Publication of JPS59163024A publication Critical patent/JPS59163024A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15Making tubes of special shape; Making tube fittings
    • B21C37/28Making tube fittings for connecting pipes, e.g. U-pieces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/002Processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/005Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
    • B21D35/006Blanks having varying thickness, e.g. tailored blanks

Abstract

PURPOSE:To obtain easily a curved pipe having an equal wall thickness and high accuracy by forming a round bar-shaped blank material into a straight pipe- shaped semiprocessed product of which the pipe part at the intermediate between the end parts having a prescribed shape is provided with the uneven wall thickness to be made equal by curving and curving such product. CONSTITUTION:A desired pipe hole 1 is opened in a round bar-shaped blank material M by forging, grinding, etc. over the entire length, thus forming bulging parts 2, 3 for connection at both ends. The uneven thickness to the extent that the part to be positioned on the inside in the stage of bending is thin and is increasingly thickly walled toward the outside and that these parts are made equal in thickness on account of the wall deformation occuring in the compressing force and stretching force in the axial line direction to be generated in the stage of bending the pipe part 4 between the parts 2, 3 is provided in said pipe part. The part 4 of the straight pipe-shaped semiprocessed product N formed in such a way is curved to an arc shape of about 90 deg. and an intended finished product N' is obtd.
JP3800483A 1983-03-08 1983-03-08 Production of curved pipe material and press device thereof as well as formed product Pending JPS59163024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3800483A JPS59163024A (en) 1983-03-08 1983-03-08 Production of curved pipe material and press device thereof as well as formed product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3800483A JPS59163024A (en) 1983-03-08 1983-03-08 Production of curved pipe material and press device thereof as well as formed product

Publications (1)

Publication Number Publication Date
JPS59163024A true JPS59163024A (en) 1984-09-14

Family

ID=12513423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3800483A Pending JPS59163024A (en) 1983-03-08 1983-03-08 Production of curved pipe material and press device thereof as well as formed product

Country Status (1)

Country Link
JP (1) JPS59163024A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0651657A (en) * 1992-07-28 1994-02-25 Canon Inc Heater and fixing device
US6450001B1 (en) 1999-05-31 2002-09-17 Tokiwa Seiki Co., Ltd. Method and apparatus for manufacturing thick-walled bent pipe
DE102011000845A1 (en) * 2011-02-21 2012-08-23 Mag Ias Gmbh Method for bending pipe, involves applying axial force only in peripheral portion of pipe ends at outer side of pipe, such that material is flowed into bending portion
JP2015147238A (en) * 2014-02-06 2015-08-20 イハラサイエンス株式会社 Method for manufacturing elbow material and elbow material manufactured by the method
JP2017221978A (en) * 2017-07-26 2017-12-21 イハラサイエンス株式会社 Manufacturing method of elbow material, and elbow material manufactured by method
CN108889792A (en) * 2018-05-25 2018-11-27 无锡市新峰管业有限公司 A kind of super wall thickness seamless elbow pipe fitting forming technique of heavy caliber
CN112222221A (en) * 2020-09-23 2021-01-15 无锡金羊管件有限公司 Forming process of reducing elbow made of stainless steel

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0651657A (en) * 1992-07-28 1994-02-25 Canon Inc Heater and fixing device
US6450001B1 (en) 1999-05-31 2002-09-17 Tokiwa Seiki Co., Ltd. Method and apparatus for manufacturing thick-walled bent pipe
DE102011000845A1 (en) * 2011-02-21 2012-08-23 Mag Ias Gmbh Method for bending pipe, involves applying axial force only in peripheral portion of pipe ends at outer side of pipe, such that material is flowed into bending portion
DE102011000845B4 (en) * 2011-02-21 2014-09-18 Ffg Werke Gmbh Method for bending and axial upsetting of a pipe and device for this purpose
JP2015147238A (en) * 2014-02-06 2015-08-20 イハラサイエンス株式会社 Method for manufacturing elbow material and elbow material manufactured by the method
JP2017221978A (en) * 2017-07-26 2017-12-21 イハラサイエンス株式会社 Manufacturing method of elbow material, and elbow material manufactured by method
CN108889792A (en) * 2018-05-25 2018-11-27 无锡市新峰管业有限公司 A kind of super wall thickness seamless elbow pipe fitting forming technique of heavy caliber
CN108889792B (en) * 2018-05-25 2020-03-17 无锡市新峰管业有限公司 Forming process of large-caliber super-wall-thickness seamless elbow pipe fitting
CN112222221A (en) * 2020-09-23 2021-01-15 无锡金羊管件有限公司 Forming process of reducing elbow made of stainless steel

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