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Forums
Engineering
Materials and Chemical Engineering
Maintaining -320°F Liquid Nitrogen for Injection Molding
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[QUOTE="Diamond Dave, post: 5460598, member: 548235"] I have a plastic injection mold, the part I am running has hot spots in the part when it is being shot in the mold. Would like to try to incorporate a closed loop plumbing system to carry liquid nitrogen past the back side of the cavity in hopes to pull the trapped heat from the hot spot area. Injected under pressure for 20 seconds. Then deplete the liquid nitrogen from the line and return it to it's holding tank. Do not want to contaminate water cooling lines, plastic material or the air quality. That is my reason for the closed system. Now the question I have is: What do I need to maintain the −320 °F of liquid nitrogen in the holding tank? I'm pretty sure the ambient heat when it pass through the mold will sooner or later cause the liquid nitrogen in the holding talk to boil when it reaches room temperature. I would appreciate any input that could steer me in the right direction of maintaining -320°F [/QUOTE]
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Engineering
Materials and Chemical Engineering
Maintaining -320°F Liquid Nitrogen for Injection Molding
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