微型微通道管的连续挤压成形工艺

发布时间：2018-06-15 17:08

本文选题：微型微通道管 + 连续挤压　；参考：《锻压技术》2016年12期

【摘要】：微型微通道管产品具有孔道数量多、孔道尺寸小、壁厚薄、尺寸精度要求高等特点,制备加工难度很大。采用连续挤压制备方法,通过采取双槽挤压方式、增加金属导流板等措施,对模具结构与加工方法、挤压工艺进行优化设计,明显改善了微型微通道管产品挤压成形时金属在产品宽度方向的流动均匀性、孔道部位的有效填充及焊合质量,解决了挤压过程中模具模芯强度不足导致的尺寸超差与失效问题和溢料过多导致产品无法挤出等问题。最终成功试制了厚度为2.2 mm、宽度为45 mm的52孔微型微通道管产品,产品外形尺寸和组织结构均满足设计要求。
[Abstract]:The micro microchannel tube has the characteristics of large number of holes, small size, thin wall and high precision, so it is very difficult to prepare and process. The die structure, processing method and extrusion process were optimized by adopting the method of double groove extrusion and adding metal guide plate. The flow uniformity of metal in the width direction, the effective filling and soldering quality of the holes in the microchannel tube during extrusion forming are obviously improved. The problems of dimension oversize and invalidation caused by insufficient strength of die core during extrusion process and the problems of product extrusion caused by excessive overflow of materials are solved. Finally, a 52 hole microchannel tube with a thickness of 2.2 mm and a width of 45 mm was successfully manufactured. Both the size and the structure of the product meet the design requirements.
【作者单位】：北京有色金属研究总院;
【分类号】：TG376

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