Title:
LASER WELDING METHOD
Document Type and Number:
Japanese Patent JP2015110233
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a welding method capable of reducing a Cr content of an outer edge of a first layer of 690 series deposited metal by dilution with a base material in a case of using the 690 series deposited metal as a filler material.SOLUTION: According to an embodiment, a laser welding method is for forming a plurality of layers constituting deposited metal by melting a filler material and part of a base material by a laser beam. 690 series deposited metal serving as the filler material is a nickel-based alloy containing 28.0 to 31.5 mass% of chromium. The filler material is configured to have a diameter of 1.1 mm or more. The base material 100 contains 15 mass% or more of chromium. At a time of forming a first layer that is a layer in contact with the base material 100, bead constituting an outer edge 17e of the first layer is subjected to laser welding under welding conditions of laser power of 2.6 kW or less, a welding speed of 50 cm/min or less, and a filler-material feeding speed of 145 cm/min or more.
Inventors:
MORISHIMA YASUO
KONO WATARU
FUKUDA TAKESHI
TAMURA MASAKI
FUJITA YOSHIHIRO
ISHIZAKI YOSHIKI
OBATA MINORU
KONO WATARU
FUKUDA TAKESHI
TAMURA MASAKI
FUJITA YOSHIHIRO
ISHIZAKI YOSHIKI
OBATA MINORU
Application Number:
JP2013253060A
Publication Date:
June 18, 2015
Filing Date:
December 06, 2013
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
B23K26/34; B23K26/12; B23K26/14; G21D1/00
Attorney, Agent or Firm:
Patent Business Corporation Sakura International Patent Office