It is testified by instance that the relative error of stimulated annealing grey model is smaller than traditional grey model's and it has improved the prediction precision.
经过实例检验，改进的模拟退火-灰色模型的相对误差比传统灰色模型小的多，提高了预测精度。
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Maintenance methods: replace the precision of the clutch wheel and the small steel wheel or wear the gear after annealing treatment, repair the wear gear and then annealing the gear quenching.
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.