We know is very extensive, the application of aluminum casting
for aluminum alloy in air and water, and have good corrosion resistance, the density of aluminum casting is smaller than cast iron and cast steel, but high strength, thermal conductivity is better also.
But usually no matter use gravity casting
and other casting method to produce aluminum castings, sometimes will appear the phenomenon of shading, bo Jo to take you to find out the reason for the dark spots appear.
As we know, aluminum as the active metal, under certain temperature and humidity is easy oxidation of black.
For example of organic matter at high temperature aluminum casting release agent, reduction of some carbon, some become organic macromolecular polymer.
These carbon molecules and polymer blend, formed in the aluminum parts, be included in the surface layer, in dark spots.
Manufacturers are in the process of gravity casting production of aluminium castings used for pay attention to the speed and time control of casting, casting also want to clear in time after the completion of surface of aluminium casting, aluminum casting production is completed, should pay attention to the placement of aluminum castings environment, to put aluminum castings in ventilation, dry environment, avoid direct sunlight.
Bo Joe professional custom production gravity casting machine for 14 years, if necessary, welcome to inquire.
The use and installation of casting machinery is compared with most other systems for managing the quenching furnace manufacturers effectively and no doubt molding machine have won the race so many times.
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