Moisture formation on the mold surfaces
Hi, I would like you to inform me about prevention methods against moisture formation on the mold surfaces in the hot summer whether conditions.As you know, the water vapor in the hot air condensates on the water cooled mold surfaces and causes product defects because of the wet cavities and corrosion of the mold.
Thanks…
However, the moisture formation problem which I have mentioned above is about the moisture droplets generation on the outer surfaces of the mold pair, not on the surrounding of the cavity region.These droplets are generated in the contact case between cold mold surface and hot air.Consequently, I cant decrease the cooling water temperature below 20 C' , if I decrease it below 20 C', this causes more water droplets and those flows in to the cavities.This state limits me about the cooling control of the process.Also wet and water droplet formatted mold loses its corrosion resistance and I can see uniform corrosion or oxidation on the mold.
I guess, the mold users who live in the Mediterranean or in any other tropical regions may experience the same problem.
Best Regards.
Thank you for your detail explanation.
yes, it may happen in the wet regions. But as long as we keep in good maintenance, clean the wet surface of the mould and spay the rust preventing oil after unloading the mould when finishing production.
Joanna
Keep On Molding
brent
1. Keep the room for mould placing dry. and spray antirusting additive after production on time.
2. Do electroplating to the surface of the mould. (cheap way)
3. Use stainless steel material to make the mould next time. (more expensive)
Joanna
good luck.
1. Tried to cover the mould area in a cabin and air conditioning it.. But you can't put the injection area in the cabin as it will reduce the temperature and will require more power..
2. Using a heavy exhaust fan to suck the air (where moisture is being formed) and throw out.. BUT it won't work.. Strictly No... Because you have to reverse the process if you want to remove moisture..
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