For the automobile engine front cover parts

there are many oil channels and independent of each other for the product

which should not be leakage resulted from shrinkage hole between each oil channel.For the die casting mold design

local extrusion was realized by core-pulling and extrusion

aiming at the parts with high requirement of compactness inside each oil passage

and the extrusion alarm and core insert spraying were designed to complete the local extrusion action with the die opening and closing to realize the function of local extrusion linkage core insert spraying

improving the inner shrinkage cavity of the casting

strengthening the compactness

and meeting the test seal requirements of the front cover products.