3D simulation of mold cooling of automotive steering wheel injection
This article examined the current application status of plastics in the automotive industry both domestically and internationally,combined with the application of CAE technology in injection molding.Using Comsol software,a three-dimen-sional simulation of the cooling process of injection molds for automotive steering wheels was conducted.The average temperature of polyurethane plastic parts varied with cooling time under different cooling water flow rates,surface roughness of cooling chan-nels,and mold materials.The results show that when the initial temperature of the steel mold and polyurethane plastic parts is 473.15 K,the cooling water flow rate is 10 m3/min,and the channel surface roughness is 0.046 mm,the témperature difference between the hottest and coldest parts of the plastic parts is 44 K after 2 minutes of cooling,and the temperature at the center of the mold block is about 307 K after 10 minutes of cooling.Under the same cooling water flow rate and pipeline surface roughness,using aluminum material results in a faster average temperature drop and better cooling effect than using steel material.By lower-ing the mold temperature,the risk of distortion and cracking in the final product can be reduced.
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