Title:
MULTI-TUBE HEAT EXCHANGER AND ITS PRODUCTION METHOD
Document Type and Number:
Japanese Patent JP2020070453
Kind Code:
A
Abstract:
To provide a method of suppressing adverse effect to a finishing process due to unmelted powder.SOLUTION: A production method of a multi-tube heat exchanger provided with a rod-like article 1 having a plurality of pipings. The rod-like article 1 has a first solid part 12 having an outer shape smaller than a body part 10 of the rod-like article at one end of the rod-like article 1. Further, the rod-like article 1 has a second solid part 11 in a region that has an outer shape larger than the first solid part 12 at the other end of the rod-like article 1 and does not overlap in a longitudinal direction of the first solid part 12 and the rod-like article 1. The rod-like article 1 is molded by a three-dimensional laminating and molding method. After molding, the unmelted powder is removed from the inside of the rod-like article 1. By holding the first solid part 12 and the second solid part 11, an outer shape of the rod-like article is finished.SELECTED DRAWING: Figure 9
Inventors:
FUKAYA HIDEO
Application Number:
JP2018202940A
Publication Date:
May 07, 2020
Filing Date:
October 29, 2018
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B22F3/16; B22F3/105; B22F5/10; F28D7/16; F28F1/00; F28F9/00
Attorney, Agent or Firm:
Ken Ieiri