Method of joining metal, plastic member, and carbon fiber reinforced plastic member

Patent metadata

Field	Value
Publication number	US-10654221-B2
Application number	US-201615563503-A
Country	US
Kind code	B2
Filing date	Mar 29, 2016
Priority date	Mar 30, 2015
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

A method of joining a metal and a plastic member, a method of joining a CFRP member and a plastic member, a method of joining a metal and a CFRP member through a plastic member, in particular a method of joining members able to join members by a faster joining speed and able to give a joined member excellent in joining strength are provided. A method of joining a metal and a plastic member by overlaying a metal and a plastic member and joining them by firing a laser beam from the plastic member side, comprising overlaying the plastic member and glass through which the laser beam will pass on the metal in that order and firing the laser beam from the plastic member side through the glass at a joining location where the metal and the plastic member are overlaid to join them by a joining speed of 0.5 m to 5.0 m/min.

First claim

The invention claimed is:

1. A method of joining a carbon fiber reinforced plastic member and a plastic member by overlaying a carbon fiber reinforced plastic member and a plastic member and joining them by firing a laser beam from the plastic member side, comprising:
overlaying said plastic member and glass through which the laser beam will pass, on said carbon fiber reinforced plastic member, in that order,
firing said laser beam of a laser output of 2 to 4 kW from said plastic member side through said glass at a joining location where said carbon fiber reinforced plastic member and said plastic member are overlaid to join them at a joining speed of 0.5 m to 5.0 m/min, and
blowing away and dispersing vaporized components ejected from the plastic member due to the laser beam.

2. A method of joining a metal and a carbon fiber reinforced plastic member by joining a metal and a carbon fiber reinforced plastic member through an intermediate member made of plastic by firing a laser beam, comprising:
joining said carbon fiber reinforced plastic member and said intermediate member made of plastic through which a laser beam passes, then joining said intermediate member and said metal,
overlaying said intermediate member and glass, over said carbon fiber reinforced plastic member, in that order, when joining said carbon fiber reinforced plastic member and said intermediate member,
firing said laser beam of a laser output of 2 to 4 kW from said intermediate member side through said glass at a joining location where said carbon fiber reinforced plastic member and said intermediate member are overlaid to join them at a joining speed of 0.5 m to 5.0 m/min,
overlaying said metal on the surface of said intermediate member and firing the laser beam at the metal surface of the joining location to heat said metal and join them by a joining speed of 0.5 m to 5.0 m/min when joining said intermediate member and said metal, and
blowing away and dispersing vaporized components ejected from the intermediate member due to the laser beam.

3. A method of joining a metal and a carbon fiber reinforced plastic member through an intermediate member by joining a metal and a carbon fiber reinforced plastic member through an intermediate member made of plastic by firing a laser beam in one pass, comprising:
overlaying said intermediate member and said metal, over said carbon fiber reinforced plastic member, in that order,
firing said laser beam of a laser output of 2 to 4 kW from said metal side at a joining location where said metal, said carbon fiber reinforced plastic member and said intermediate member are overlaid to join them at a joining speed of 0.5 m to 5.0 m/min by one pass, and blowing away and dispersing vaporized components ejected from the intermediate member due to the laser beam.

Assignees

• Nippon Steel & Sumitomo Metal Corp
• Nippon Steel Corp

Inventors

• Yasuyama Masanori
• Tokunaga Masatoshi
• Sakamoto Teruki
• Tamezane Takumi
• YOSHINAGA Chisato

Classifications

• B29C65/7841

  Holding or clamping means for handling purposes (clamping means for the purpose of applying pressure on the parts to be joined, in the area to be joined B29C66/81; work holders in general B25B; devices for holding or positioning work for welding metal B23K37/04) · CPC title

• B29C65/8253

  by the use of waves or particle radiation, e.g. visual examination, scanning electron microscopy, or X-rays (B29C65/8292 takes precedence) · CPC title

• B29C66/742

  to metals or their alloys · CPC title

• B29C66/43

  Joining a relatively small portion of the surface of said articles (B29C66/45 takes precedence) · CPC title

• B29C66/8122

  characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps · CPC title