摘要
分析了汽车换热器平行集流铝扁管型材的结构特征。提出了一种新的模具结构,提出了一种半整体式模芯结构。介绍了新的模具结构参数的选择,包括挤压机能力的选择、分流孔的布置、模芯结构、导流孔尺寸、下模焊合室的结构以及模芯和模孔工作带的选择等。实践表明,新的结构可以有效地防止模芯的过早折断而大大提高模具的寿命。
The structural characteristics of parallel tube aluminum flat tube profiles for automotive heat exchangers were analyzed. A new die structure is presented,and a semi integral core structure is proposed. The selection of new die structure parameters is introduced. Including the selection of extruder capacity,the layout of hollow holes,the structure of the cores,the size of guiding holes,the structure of the welding chamber and the bearing of cores and the die hole etc. The practice shows that the new structure can effectively prevent the premature fracture of the cores and greatly improve the service life of the die.
引文
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