Title:
METHOD FOR MANUFACTURING CONTACT TIP FOR WELDING TORCH BY FORGING
Document Type and Number:
WIPO Patent Application WO/2013/187732
Kind Code:
A1
Abstract:
Disclosed is a method for manufacturing a contact tip for a welding torch by forging. The method for manufacturing a contact tip for a welding torch by forging according to the present invention comprises: a base preparation step of preparing a cylindrical base; a connection unit formation step of pressing the base so as to form a first form having a first connection unit hole; a body hole formation step of pressing the center of the first form so as to form a second form having a second body hole; a communication step of pressing the center of the second form so as to form a third form in which the first connection unit hole and the second body hole are placed in communication; and a head formation step of placing a finishing pin, the diameter of which is the same or larger than that of a welding wire, in the third form, and pressing the third form so as to form a fourth form having a fourth head hole. According to the present invention, a base having a circular cross-section can be used, and rapid variations in the diameter and shape of the base can be prevented during the formation of the connection unit and the connection unit hole. Therefore, loads being applied to each formed protrusion can be significantly relieved to thus reduce the risk of damage to the formed protrusion and improve productivity.
Inventors:
KU BON SU (KR)
Application Number:
PCT/KR2013/005284
Publication Date:
December 19, 2013
Filing Date:
June 14, 2013
Export Citation:
Assignee:
KU BON SU (KR)
International Classes:
B21K21/08
Foreign References:
| JPH10113742A | 1998-05-06 | |||
| KR20110092733A | 2011-08-18 | |||
| KR100583068B1 | 2006-05-26 | |||
| KR200422605Y1 | 2006-07-27 | |||
| JP2000140992A | 2000-05-23 |
Attorney, Agent or Firm:
NAM & NAM WORLD PATENT & LAW FIRM (KR)
특허법인 남앤드남 (KR)
특허법인 남앤드남 (KR)
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