Difference between die casting and die forging blank of vertical fire
pump
What are the differences between the die casting parts of vertical fire
pump and the blank of die casting die forging? Please see the knowledge analysis
carefully prepared by Xiaobian for you. It will certainly help you.
One is
from the processing requirements of the surface layer of the blank. For example,
aluminum die castings contain silicon, and the surface layer of the blank
produced by die casting process has micro pores, and the surface layer of this
material will have "black spots" after anodizing treatment. Therefore, if the
blank is required to be anodized, the blank will not be produced by conventional
die casting process;
Second, die casting parts are generally "structural
parts", while die casting die forgings are "functional parts". "Structural
component" is compared with "functional component". The latter generally refers
to the protection against impact, high temperature, pressure, intensity, surface
treatment and heat treatment. Typical products are engine block, hub, piston,
connecting rod, brake shoe, pneumatic or hydraulic valve body, etc. The former
is such as door frame, instrument panel, hair idea blouse, etc;
The third is
to judge from the metallographic structure. Die casting and die forging are very
easy to distinguish in metallography. The former is dendritic as cast structure,
and the latter is forged structure with average broken grains;
Fourth,
judging from the material composition. As the die castings are generally forged
alloys, in view of other alloy names, they are often produced by die casting and
die forging process.
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