The factors affecting full-package rate of direct-spun PET FDY were analyzed and discussed from the aspects of melt transfer and process conditions.
从熔体输送和纺丝工艺条件分析、探讨影响PET直纺FDY满卷率的因素。
A mathematical model for heat transfer process in HPH furnace was established and verified, then applied to analysis of the relationship between gas flow rate and annealing time.
通过建立全氢罩式退火炉炉内传热过程的数学模型，并经过实测验证后，分析了循环风量与退火时间的关系。
The strengthening heat transfer can significantly improve reduction feeding rate and shorten the cycle of reduction process, finally increase production efficiency.
通过强化传热可以大幅提高还原加料速度，缩短还原生产周期，提高生产效率。
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