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Abstract：
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To produce eligible magnesium alloy electric screwdriver knife sleeve forgings,an isothermal forging die with resistance-wire ceramic heater and temperature control system was designed.The structure of resistance-wire ceramic heater,temperature control system and heat preservation system were introduced.The cavity was used as hearth to heat up magnesium alloy billets directly.A formula was employed to calculate the heating time of die,it was 26 min which was close to the experiment heating time of 27 min.As setting temperature was 260,300 and 340 ℃ respectively,the temperature-time curve of die was gained and an analysis on it was presented.The temperature-time curve shows that the heating characteristic of magnesium alloy isothermal forging die is stable,that is the rush temperature under different setting temperatures is about 50 ℃.
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Funds：
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华中科技大学材料成形与模具技术国家重点实验室开放基金资助项目(06-1)
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AuthorIntro：
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Reference：
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[5]夏巨谌,韩凤麟,赵一平.中国模具设计大典(第4卷)——锻模与粉末冶金模设计[M].南昌:江西科学技术出版社,2003.
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