TOPIC NAME-WHAT DO YOU UNDERSTAND BY THE TERM FLASH IN
WHY IT
FORGING ?
IS GIVEN IN WHAT STAGE ? EXPLAIN WITH FIGURE ?
In terms of the design of a forging, flash is an excess or surplus of metal
that is trimmed or otherwise removed after forging operations are
completed .
Closed die or Impression die forging: In this type the work piece is compressed
between two die halves which carry the impressions of the desired final shape
that is
imparted to workpart. Metal flow is constrained
so that flash is created . Flash is that portion of excess metal which is adjoining
the forging at the parting line. That portion is removed by trimming to get the
product.