Method of molding anisotropic composite material and die using anisotropic composite material

Patent metadata

Field	Value
Publication number	US-11565323-B2
Application number	US-202016874868-A
Country	US
Kind code	B2
Filing date	May 15, 2020
Priority date	Jun 4, 2019
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

Provided is a method of molding a composite material by laser metal deposition in which a powder metal material is irradiated with a laser beam while supplying the powder metal material onto a surface of a base material, in which the powder metal material is a mixed powder of an Fe alloy powder and a Cu powder, and a mixing ratio of the Fe alloy powder and the Cu powder is 15% or more and 30% or less by weight % of the Cu powder, and in which the composite material having anisotropy is molded by setting energy of the laser beam to be 9 KJ/g or more and 10 KJ/g or less in a mixed powder ratio.

First claim

What is claimed is:

1. A method of molding a composite material by laser metal deposition in which a powder metal material is irradiated with a laser beam while supplying the powder metal material onto a surface of a base material,
wherein the powder metal material is a mixed powder of an Fe alloy powder and a Cu powder, and a mixing ratio of the Fe alloy powder and the Cu powder is 15% or more and 30% or less by weight % of the Cu powder, and
wherein the composite material having anisotropy is molded by setting energy of the laser beam to be 9 KJ/g or more and 10 KJ/g or less in a mixed powder ratio and simultaneously melting the mixed powder to form a Cu phase and a Fe phase, so that a shape of the Cu phase becomes larger in the Z direction than in the X direction,
wherein the base material and the molded composite material are bonded by setting the energy density of the laser to 50 J/mm 2 , and
wherein the Z direction is the vertical direction and the X direction and Y direction are two perpendicular directions constituting a horizontal plane.

2. The method according to claim 1 , wherein an output of the laser beam is 1800 W or more and 2000 W or less.

3. The method according to claim 2 , wherein the mixed powder is supplied at a rate of 12 g/min or more and 13 g/min or less.

4. The method according to claim 3 , wherein a scanning speed of the laser beam with respect to the base material is 1000 mm/min.

Assignees

• Hitachi Ltd

Inventors

• Kunitomo Kenichiro
• Ikeda Osamu
• Touhei Tomotake

Classifications

• B33Y10/00 Primary

  Processes of additive manufacturing · CPC title

• B22F2202/11

  Use of irradiation · CPC title

• B22F2301/10

  Copper · CPC title

• B22F2005/002

  Tools other than cutting tools · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title