轮胎直压硫化工艺的有限元仿真

传统的蒸汽硫化机具有胶囊和蒸汽室,使用过热蒸汽加热轮胎使之硫化。蒸汽的传热效率低,能量浪费严重。由于蒸汽的放热冷凝,蒸汽室底部的温度低于蒸汽室顶部的温度,这导致轮胎的不均匀硫化。直压硫化则采用电磁加热方式,其产生的温度场均匀,局部区域温度具有可控性。其次直压硫化工艺用大小鼓瓦与轮胎直接接触传热的方式,其传热效率应该比蒸汽硫化工艺高。本文基于ABAQUS软件,编写HETVAL和UVARM子程序模拟实际硫化工艺得到255/30R22轮胎的温度场和硫化程度场,在相同硫化条件下比较两种工艺的硫化效果。结果表明直压硫化工艺的硫化效率大约提高了三分之一。

Finite Element Simulation on Tire Direct Pressure Vulcanization

Traditional steam curing machine had capsules and steam room, heating tire with superheated steam. Steam heat transfer was inefficient and energy-intensive. Due to steam condensation, temperature of vulcanization bladder upside was lower than temperature of bladder downside, leading to uneven vulcanization. The direct pressure curing process heated tire with electromagnetism, which made tire temperature field homogeneous and precisely controllable. Heat transfer efficiency of direct pressure process was higher by the way of contact heat transfer. Based on ABAQUS software and subroutine HETVAL and UVARM, the actual vulcanization process was simulated to get temperature field and cure degree field of 255/30R22 tire. Under the same condition vulcanization efficiency of direct pressure curing process increased by a third.