Title:
レーザー器具を利用した支持格子内部格子間溶接装置と溶接方法及びそれによって製造された支持格子
Document Type and Number:
Japanese Patent JP4647627
Kind Code:
B2
Abstract:
Disclosed are an apparatus and method for welding strap connections between inner grid straps of a spacer grid using a laser tool, and a spacer grid manufactured by the same, in which the strap connections between the inner grid straps of the spacer grid are seam-welded continuously or intermittently using the laser tool, so that the structural strength of the spacer grid is increased, a spattering phenomenon, in which a welded material is spattered during welding, is reduced, and thermal deformation is reduced. Further, fine welding is possible, and thus the welded bead of each strap connection between the inner grid straps can have a small size, and the number of welding defects can be reduced. In addition, the flow resistance of a coolant is reduced, and thereby the pressure drop of thecoolant can be reduced. As a result, the load on a flow pump for the coolant can be reduced, and economic efficiency and safety can be improved.
Inventors:
Song Kin Nam
Kim Soo Sung
Song Kun Woo
Kim Soo Sung
Song Kun Woo
Application Number:
JP2007009031A
Publication Date:
March 09, 2011
Filing Date:
January 18, 2007
Export Citation:
Assignee:
Korea Atomic Energy Research Institute
Korea Hydro and Nuclear Power Company Limited
Korea Hydro and Nuclear Power Company Limited
International Classes:
B23K26/08; B23K26/14; B23K26/21; G21C3/34
Domestic Patent References:
| JP9015363A | ||||
| JP8066782A | ||||
| JP2001191189A |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda