GB740743A - Improvements in and relating to processes and apparatus for the manufacture of hollow metal bodies having a thick base, and bodies thus manufactured
- Google Patents
Improvements in and relating to processes and apparatus for the manufacture of hollow metal bodies having a thick base, and bodies thus manufactured
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
Application number
GB24516/50A
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.)
BARKWAY ENGINEERING Co LT
Original Assignee
BARKWAY ENGINEERING Co LT
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 BARKWAY ENGINEERING Co LTfiledCriticalBARKWAY ENGINEERING Co LT
Publication of GB740743ApublicationCriticalpatent/GB740743A/en
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
B21C23/00—Extruding metal; Impact extrusion
B21C23/02—Making uncoated products
B21C23/04—Making uncoated products by direct extrusion
B21C23/14—Making other products
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Forging
(AREA)
Abstract
740,743. Extruding. BARKWAY ENGINEERING CO., Ltd. Oct. 6, 1950 [Oct. 7, 1949], No. 24516/50. Class 83 (4). In a method of extruding metal capsules 1, a punch 9 acting on a blank 6 confined in the bore 11 of a die has a conically bevelled end 10<SP>1111</SP> terminating in a projecting head 10 which acts as an internal mandrel to define the internal diameter of the capsule, the bore 11 of the die terminating in a conical step 7 leading to an orifice 8 defining the external diameter of the capsule. The head 10 may be cylindrical or conical, the conical form producing an internally tapered wall 4 on the capsule. The end 10<SP>1</SP> of the head may be hemispherical, paraboloidal or of truncated cone shape according to the desired internal shape of the base 2 of the capsule.
GB24516/50A1949-10-071950-10-06Improvements in and relating to processes and apparatus for the manufacture of hollow metal bodies having a thick base, and bodies thus manufactured
ExpiredGB740743A
(en)
A combined die-pressing and extrusion process and apparatus for the production of hollow bodies having protuberances on their outer face and one or more extensions at one end
Cold working procedure for forming hollow bodies - with either a top or central shoulder, by forming rough cast, inversely extruding into die and punching