Electromagnetic forming device and electromagnetic forming method for aluminum tube member

An electromagnetic forming method for an aluminum tube member, the method comprising the following steps that are performed in sequence:

• a tube insertion step of moving a jig plate in which at least one support member having a through hole is fixed onto a substrate and a tube member made of an aluminum alloy relative to each other to insert the tube member into the through hole of the support member;
• a step of transporting the jig plate on which the tube member is supported to a next stage;
• a coil placement step of moving a coil unit including at least one electromagnetic-forming coil portion and the tube member relative to each other in the tube member to place the electromagnetic-forming coil portion at a tube expansion position of the tube member;
• and
• a tube expansion step of supplying an electric current for electromagnetic forming to the electromagnetic-forming coil portion to expand the tube member.

An electromagnetic forming method for an aluminum tube member, the method comprising the following steps that are performed in sequence:

• a step of moving
• a tube member made of an aluminum alloy and a coil unit including at least one electromagnetic-forming coil portion, the coil unit having been inserted into the tube member so that the electromagnetic-forming coil portion is placed at a tube expansion position of the tube member, and
• a jig plate in which at least one supporting member having a through hole is fixed onto a substrate,
• relative to each other while maintaining a positional relationship between the electromagnetic-forming coil portion and the tube expansion position to insert the tube member into the through hole of the support member;
• and
• a tube expansion step of expanding the tube member by supplying an electric current for electromagnetic forming to the electromagnetic-forming coil portion.