Cold core box is a kind of high efficiency core-making
technology. Compared with hot core box and shell core, cold core
box has the advantages of high efficiency, energy saving and good
working conditions. It has been widely used in casting
production.The core quality and speed of the cold core box method
are closely related to the ambient temperature, humidity, air
temperature, air pressure and air blowing time. To ensure the
quality of the sand core, the following measures should be taken:
when the temperature of raw sand is on the high side, the storage
time of sand mixture should be shortened appropriately;When the
temperature of the original sand is low, the sand temperature
regulator should be opened to increase the sand temperature
appropriately to ensure the hardening speed of the sand core.For
large sand cores, the blowing pressure and blowing time can be
appropriately increased to ensure the hard permeability.Different
requirements of blowing air temperature for hard gas are different,
the SO2 room temperature is a gas without heating, and the room
temperature of triethylamine and methyl formate is a liquid, which
is easy to condensate in the pipeline in winter, the blowing pipe
shall take appropriate heating and insulation measures to ensure
the content of triethylamine (methyl formate) in the hard gas is
relatively stable.Triethylamine method and modified silicate sand
blowing carbon dioxide/compressed gas combined blowing method are
very sensitive to air humidity, and compressed air needs to be
dehumidified.Type ZH850LZH1100LZH1412LTemplate size
(mm)850*8501100*11001400*1200Clamping
stroke(mm)400400600Max weight of sand
core(KG) 306080Product show Packing& shipping Our
clientsIf you are any interested in our foundry
machinery , Please contact us freely .Warmly
welcome to visit our factory! Our team waiting you for
here! /* March 10, 2023 17:59:20 */!function(){function
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