JPS5636331A - Manufacture of elbow provided with straight pipe - Google Patents

Manufacture of elbow provided with straight pipe

Info

Publication number
JPS5636331A
JPS5636331A JP11224579A JP11224579A JPS5636331A JP S5636331 A JPS5636331 A JP S5636331A JP 11224579 A JP11224579 A JP 11224579A JP 11224579 A JP11224579 A JP 11224579A JP S5636331 A JPS5636331 A JP S5636331A
Authority
JP
Japan
Prior art keywords
granule
pipe blank
water
bending
interior
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.)
Granted
Application number
JP11224579A
Other languages
Japanese (ja)
Other versions
JPS6059058B2 (en
Inventor
Takeshi Nakada
Nanao Takigawa
Masayasu Kojima
Masatake Yamazaki
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.)
Nippon Steel Corp
Benkan Kikoh Corp
Original Assignee
Sumitomo Metal Industries Ltd
Sumikin Kikoh Co Ltd
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 Sumitomo Metal Industries Ltd, Sumikin Kikoh Co Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP11224579A priority Critical patent/JPS6059058B2/en
Publication of JPS5636331A publication Critical patent/JPS5636331A/en
Publication of JPS6059058B2 publication Critical patent/JPS6059058B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE: To surely prevent generation of the shape defect, and to make the following process possible to be abbreviated, by filling the interior of the bending part with the hard granule and the water, and by applying the bending work.
CONSTITUTION: A specified amount of the hard granule is put into the pipe blank P and the water is poured into the pipe blank P as much as the packed granule is completely submerged in the water, and again the granule and water are filled in this order similarly to above procedure; this procedure is several times repeated with the amount of granule and water divided into number of repetitions; as a result, whole interior of the pipe blank P is filled up with the granule and the water fills up every space formed among the granules, and hereby, the air is perfectly excluded from the interior of the pipe blank P. The hard granule as the packing material is prepared by mixing the sand, the steel ball or crushed steel ball at a suitable proportion. Next, the pipe blank P is laid to bridge the holding grooves 11, 11, of the loading beds 1, 1, on both sides, so as to locate the longitudinal center of the bending part C of the pipe blank P at the position just under the bending roll 2, that is at the middle of the bearing shafts 12, 12, of two loading beds 1, 1. Then, the bending roll 2 is brought down to make the pushing groove 21 to ride on and touch the pipe blank P, and the bending work is performed.
COPYRIGHT: (C)1981,JPO&Japio
JP11224579A 1979-08-31 1979-08-31 Manufacturing method of elbow with straight pipe part Expired JPS6059058B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11224579A JPS6059058B2 (en) 1979-08-31 1979-08-31 Manufacturing method of elbow with straight pipe part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11224579A JPS6059058B2 (en) 1979-08-31 1979-08-31 Manufacturing method of elbow with straight pipe part

Publications (2)

Publication Number Publication Date
JPS5636331A true JPS5636331A (en) 1981-04-09
JPS6059058B2 JPS6059058B2 (en) 1985-12-23

Family

ID=14581866

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11224579A Expired JPS6059058B2 (en) 1979-08-31 1979-08-31 Manufacturing method of elbow with straight pipe part

Country Status (1)

Country Link
JP (1) JPS6059058B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153451U (en) * 1983-03-30 1984-10-15 株式会社ピエム理研 piezoelectric igniter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6245665U (en) * 1985-09-10 1987-03-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153451U (en) * 1983-03-30 1984-10-15 株式会社ピエム理研 piezoelectric igniter

Also Published As

Publication number Publication date
JPS6059058B2 (en) 1985-12-23

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