Core and mold wash
and physical mold packing were eliminated, cutting full shift man hours for both processes, plus wash drying time.
* Mold wash
penetration is on the order of 0.100-0.125 in.
(Normally, the temperature of the mold wash
in ambient conditions will be upwards of 20F [10C], colder than ambient as a result of evaporative cooling.)
Mold, core, mold wash
and even sleeve permeability must be considered when assessing the exposure of the liquid metal inside the riser sleeve to the atmospheric air.
It also includes two mold wash
systems, drying ovens, core setting, two automatic mold closing systems, a mold pouring and cooling system, two shakeouts and a 30 ton/hr.
Mold preparation, such as applying mold wash
, venting, setting chaplets and cores, and actual closing of the mold are completed on the finish line with less effort.
Then, the mold surface can be treated using mold wash
or other traditional foundry techniques to improve surface finish.
The mold halves pass through an infrared drying oven, which ensures curing of the bonded sand and heats the mold wash
surface to prevent the water-based wash from penetrating too deeply.
ITW/BCK electric infrared/forced-air mold wash
dryers are designed for rapid drying of water-based refractory coatings on sand molds.
The appearance issue was handled by mold temperature, injection pressure and control of mold wash
Changes in mold wash
, binders, or even the way the parts are molded can impact cleaning times.
- a good thick layer of mold wash