When the copper castings are processed, the surface must have contaminants.
It is necessary to complete the cleaning work in time and try to do chemical
protection as much as possible. Although you can't use thick grease directly,
you can use some special protective oil, which can effectively protect. When you
wipe it daily, do not use water directly, or use a soft cloth to avoid
The role of copper casting ribs is to increase the strength and
rigidity of the parts after the wall thickness is reduced. It can prevent the
shrinkage deformation of the castings during the operation and avoid deformation
when the workpiece is ejected from the mold. The auxiliary circuit (the path of
metal flow), the thickness of the die-casting rib should be less than the
thickness of the wall where it is located, generally taking 2/3~3/4 of the
thickness of the place.
Many structural parts are made of castings as blanks, and are closely related
to the quality and precision of copper materials. The quality of copper castings
has a vital impact on machine quality, life and accuracy. Copper castings can be
used in valves, speakers, injection molding machines, water pipes, etc. At the
same time, different molding processes can be used in the casting process.
Depending on the method of forming the copper casting, strict quality control
of its molding and production process is required during casting. In fact, the
surface quality of copper castings depends to a large extent on the quality of
the molding. For example, surface defects such as sand, pores, blisters, and
sandblasting, as well as surface roughness and dimensional accuracy of the
castings are related to the quality of the molding. In order to reduce the
occurrence of such defects, in addition to controlling the compactness of the
mold, the mold must be evenly compacted.
During the processing of copper castings, the coupling from copper coupling manufacturers is an
important part of plastic forming. The so-called cold extrusion refers to
placing the copper blank into the mold cavity in the cold state under strong
pressure and a certain speed. The copper is forced to be extruded from the
cavity to obtain the desired shape, size, and extrusion with certain mechanical