Title:
METHOD FOR MANUFACTURING THICK-WALLED FINE DIAMETER TUBE
Document Type and Number:
Japanese Patent JP3920581
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method of efficiently manufacturing a thick-walled fine diameter tube which is appropriately usable as a fuel injection pipe for a diesel engine, and has the smooth inner peripheral surface without defects.
SOLUTION: In the method for manufacturing the thick-walled thin diameter tube by repeating a process in which tube drawing and heat treatment are performed on a seamless tube stock a repeatedly, before the final tube drawing, a tube to be worked is cut into a length taking the length of a product into consideration, cutting or grinding is applied to the inner peripheral surface of the cut article and the final tube drawing is performed by forging work of the cut article the inner peripheral surface of which is cut or ground by utilizing pressing force by a press.
Inventors:
Kameda Shigeji
Application Number:
JP2001080073A
Publication Date:
May 30, 2007
Filing Date:
March 21, 2001
Export Citation:
Assignee:
Sanoh Industry Co., Ltd.
International Classes:
B21C1/22; B23D21/00; B21C1/24; B21C1/26; B21C37/06; B21C37/30; B24C3/32; F02M55/02; (IPC1-7): B21C1/22; F02M55/02; //B23D21/00; B24C3/32
Domestic Patent References:
| JP5154708A | ||||
| JP5154536A | ||||
| JP9122795A |
Attorney, Agent or Firm:
Masatoshi Iwane
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