一种全新“腔压喷射”铝挤压模具设计
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摘要
对于宽度截面在400 mm以上的特大型铝模板型材,传统生产需要在7 500 t级别以上的挤压机进行生产。对挤压机生产线的硬件设备投入较高。运用全新的"腔压喷射",使得模具内腔的宽展角度大大突破30°达到接近40°,宽展幅度达到铝棒直径的60%。在3 000 t级的挤压机就可以顺利生产,挤压生产的突破压力较传统设计的模具低20%以上,挤压速度提高25%以上。
For the oversize aluminum template profiles with the characteristic of more than 400 mm wide cross section, the traditional production needs more than 7500 tons extruding machine. It leads to high cost of extruder production line. Using the new concept of "cavity pressure injection" for the die, the spread angle of the inner cavity was increased from 30 degrees to nearly 40 degrees, and the spread range reached 60% of the aluminum bar's diameter. Thereby the production could be completed successfully with only 3000 tons extruding machine. Comparing with the traditional design, the breakthrough pressure of new die was more than 20% lower, and the extrusion speed was increased by more than 25%.
For the oversize aluminum template profiles with the characteristic of more than 400 mm wide cross section, the traditional production needs more than 7500 tons extruding machine. It leads to high cost of extruder production line. Using the new concept of "cavity pressure injection" for the die, the spread angle of the inner cavity was increased from 30 degrees to nearly 40 degrees, and the spread range reached 60% of the aluminum bar's diameter. Thereby the production could be completed successfully with only 3000 tons extruding machine. Comparing with the traditional design, the breakthrough pressure of new die was more than 20% lower, and the extrusion speed was increased by more than 25%.
引文
[1]吴锡坤.铝型材加工实用技术手册[M].长沙:中南大学出版社,2006.
[2]邓汝荣,李昌权.大断面铝型材的挤压模宽展分流设计[J].轻合金加工技,2014,42(1):39-43.
[3]吴望一.流体力学[M].北京:北京大学出版社,1982.
[4]谢建新,刘静安.金属挤压理论与技术[M].北京:冶金工业出版社,2012:133-138.
[5]汪大年.金属塑性成形原理[M].北京:机械工业出版社,1986.
[6]刘静安.铝型材挤压模具设计、制造、使用及维修[M].北京:冶金工业出版社,1999.
[7]李剑.一种腔压喷射挤压模具:201820037164.5[P].2018-08-07.
[2]邓汝荣,李昌权.大断面铝型材的挤压模宽展分流设计[J].轻合金加工技,2014,42(1):39-43.
[3]吴望一.流体力学[M].北京:北京大学出版社,1982.
[4]谢建新,刘静安.金属挤压理论与技术[M].北京:冶金工业出版社,2012:133-138.
[5]汪大年.金属塑性成形原理[M].北京:机械工业出版社,1986.
[6]刘静安.铝型材挤压模具设计、制造、使用及维修[M].北京:冶金工业出版社,1999.
[7]李剑.一种腔压喷射挤压模具:201820037164.5[P].2018-08-07.