JPS55130326A - Production of uneven-walled pipe - Google Patents

Production of uneven-walled pipe

Info

Publication number
JPS55130326A
JPS55130326A JP3803479A JP3803479A JPS55130326A JP S55130326 A JPS55130326 A JP S55130326A JP 3803479 A JP3803479 A JP 3803479A JP 3803479 A JP3803479 A JP 3803479A JP S55130326 A JPS55130326 A JP S55130326A
Authority
JP
Japan
Prior art keywords
die
mandrel
blank pipe
axis
reducing
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
JP3803479A
Other languages
Japanese (ja)
Inventor
Hisashi Nakagawa
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
Original Assignee
Sumitomo Metal Industries 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 filed Critical Sumitomo Metal Industries Ltd
Priority to JP3803479A priority Critical patent/JPS55130326A/en
Publication of JPS55130326A publication Critical patent/JPS55130326A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
    • B21C1/26—Push-bench drawing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)

Abstract

PURPOSE: To offcenter the mandrel axis and reducing the blank pipe to the uneven- walled pipe of a desired thickness by titling forward the die at a required angle to the mandrel axis in reducing the blank pipe mounted to the mandrel.
CONSTITUTION: The axis l of a die 3 is tilted forward at a required angle ϕ with the point 0 of intersection of die outlet face 7 and mandrel axis m as a center. Next, when the blank pipe 1 mounted to the mandrel 2 is entered into the die 3, the blank pipe 1 abuts against the sharp slope 5 of the die 3 and moves upward and forward. Further, the blank pipe 1 advances until it abuts against the top face of the sharp slope 5 and is prevented from moving upward, thence the reducing begins. Hence, the mandrel axis practically moves parallel from m' to m and the angle ϕ of inclination is held maintained. The mandrel axis m then deviates downward by as much as it has risen, thus producing an unevenness of deviation amount ΔH=2×Δh. Here, the similar effect is also obtained even by tilting the mandrel in place of tilting the die.
COPYRIGHT: (C)1980,JPO&Japio
JP3803479A 1979-03-29 1979-03-29 Production of uneven-walled pipe Pending JPS55130326A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3803479A JPS55130326A (en) 1979-03-29 1979-03-29 Production of uneven-walled pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3803479A JPS55130326A (en) 1979-03-29 1979-03-29 Production of uneven-walled pipe

Publications (1)

Publication Number Publication Date
JPS55130326A true JPS55130326A (en) 1980-10-09

Family

ID=12514257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3803479A Pending JPS55130326A (en) 1979-03-29 1979-03-29 Production of uneven-walled pipe

Country Status (1)

Country Link
JP (1) JPS55130326A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6068109A (en) * 1983-09-26 1985-04-18 Sumitomo Metal Ind Ltd Method for controlling dimension of reducing material
CN112058930A (en) * 2020-08-18 2020-12-11 浙江大学 A terrace die and supporting production facility structure for drawing eccentric blank pipe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6068109A (en) * 1983-09-26 1985-04-18 Sumitomo Metal Ind Ltd Method for controlling dimension of reducing material
CN112058930A (en) * 2020-08-18 2020-12-11 浙江大学 A terrace die and supporting production facility structure for drawing eccentric blank pipe
CN112058930B (en) * 2020-08-18 2021-06-29 浙江大学 A terrace die and supporting production facility structure for drawing eccentric blank pipe

Similar Documents

Publication Publication Date Title
FR93368E (en) A process for producing high pressure methane-rich gas from low pressure liquid natural gas.
JPS54116364A (en) Sleeve type roll with variable crown amount
JPS55130326A (en) Production of uneven-walled pipe
JPS5239091A (en) Microscopic pressure control device
JPS5251697A (en) Method of building supporting legs of spherical tank in low tmperature liquified gas carrying vessel
JPS5570420A (en) Forming method for thick walled uo steel pipe
JPS5568918A (en) Steel sheet pile
JPS544906A (en) Production of hard butter and highly stable liquid oil
JPS5794423A (en) Manufacture of sleeve for pipe joint
JPS5518365A (en) Diamond tool
JPS52122901A (en) Multi-functional circulation pump
JPS5736983A (en) Preparation of baker's yeast by sugar fed-batch culture
JPS5318044A (en) Auger type ice maker
JPS56131002A (en) Changing method for roll crown
JPS57144733A (en) Manufacture of thermoplastic plastics container
JPS5680327A (en) Composite bending apparatus
JPS54135999A (en) Channel box disposing method of reactor fuel
JPS57202908A (en) Rolling mill
JPS55112144A (en) Nail and production thereof
Petrus Structure not enough
JPS56111522A (en) Hot extruding method for metallic material
JPS55145093A (en) Light buoy
JPS5345718A (en) Liquid piping for controlling noises by oscillation
JPS53103437A (en) Continuous feed of slurry
JPS5332581A (en) Extruder screw having eccentric ring