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One of the problems associated with
producing automotive aluminum trim parts stamping as compared with
making the same old typical automotive aluminum trim parts
stamping sheet is that there is a tendency for the aluminum to
tear or wrinkle during forming operations. Consequently, those
panels that are produced out of aluminum are often comparatively
soft in shape, avoiding the sharp edges that can be stamped into
steel as a matter of course.
Electromagnetism may be the means by which this limitation is
overcome. At least the work being performed at Taiwan and have
been working on the past few years on methods to use
electromagnetism for forming aluminum. Although the process itself
is fairly remarkable, its name is, well, rather pedestrian:
“electromagnetically assisted stamping” (automotive aluminum trim
parts stamping). Although you might immediately think, “Wait a
minute, aluminum isn’t magnetic,”
Which aluminum is. So, too, are materials including high-strength
steel, which is a material that can also be difficult to form. In
the setup for forming, there is an actuator (e.g., a coil of wire)
through which a large pulsed current is passed. “The changing
magnetic field created by the transient current induces eddy
currents in any conductor nearby,” automotive aluminum trim parts
stamping research adding, “These currents have their own magnetic
fields. There is a mutual magnetic repulsion between the two sets
of currents. |
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