本文对铸件退火时如何控制加热速度、保温时间、冷却速度进行了充分的研究和探讨，为合理制定铸件退火工艺指出了方向。
In this article, a thorough investigation has been conducted into heating rate, holding time and cooling speed in an effort to work out an optimum ingot annealing process.
针对大型复杂铸件毛坯与设计原形存在误差，提出了梯度—模拟退火算法来对铸件毛坯进行适配。
Aiming at the error between original design and large scale and complex rough casting, a gradient (simulated) annealing algorithm for the best fitting method is presented.
机体结构部分： 本机主要铸件均采用高级耐磨铸铁料，并经由时效退火处理，消除内应力，以确保高精度不变，高刚性，延长了机器使用寿命。
Resisting casting iron and have relieved the internal stress through aging annealing treatment to ensure the high precision and high rigidity to prolong the service life of the machine.
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