Abstract:
Friction-stir weldments and systems and methods for producing the same are disclosed. In one embodiment, a metal product includes a first metal plate (114) having a first center-neutral axis (115), a second metal plate (124) comprising a second center-neutral axis (125), and a friction-stir corner weld (12) that connects the first metal plate (114) to the second metal plate (124), where the first center-neutral axis (115) of the first metal plate (114) is transverse to the second center-neutral axis (125) of the second metal plate (115). In another embodiment, a system (150) for producing friction-stir weldments includes a backup anvil (160) having a first supporting face (162) and a second supporting face (164), where the first supporting face (164) is adapted to receive and support the first metal plate (114), and where the second supporting face (162) is adapted to receive and support a second metal plate (124), wherein the center-neutral axis (115) of the first metal plate (114) is transverse to the center-neutral axis (125) of the second metal plate (124).
Abstract:
A method for determining a die profile for forming a metal part having a desired shape. The method includes the steps of providing a nominal die profile, determining a springback profile based on the nominal die profile and employing a compensation strategy to determine the die profile based on the nominal die profile and the springback profile. There are disclosed five (5) compensation strategies: (1) a reversed die-normal technique; (2) a reversed radial rotation technique; (3) a reversed resultant vector technique; (4) a reversed path technique; and (5) a mirror image of resultant vector technique. Associated methods of making a die based on the die profile determined above and making a metal part under a set of forming conditions from the die are also disclosed.
Abstract:
A method for determining a die profile for forming a metal part having a desired shape. The method includes the steps of providing a nominal die profile, determining a springback profile based on the nominal die profile and employing a compensation strategy to determine the die profile based on the nominal die profile and the springback profile. There are disclosed five (5) compensation strategies: (1) a reversed die-normal technique; (2) a reversed radial rotation technique; (3) a reversed resultant vector technique; (4) a reversed path technique; and (5) a mirror image of resultant vector technique. Associated methods of making a die based on the die profile determined above and making a metal part under a set of forming conditions from the die are also disclosed.