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异型铝材的挤压模具,很多工厂是使用热作模具钢3Cr2W8V制造的.原料进厂后的一般加工过?直径不大的模具(200mm以下)下料后直接加工成模坯.但对于大规格的模具(如300mm以上)由于大直径的钢材不易购买,有些厂还需再经过一次镦锻加工及退火软化工序.上述制造过程无论在选材还是加工方面,当前都存在一些问题.曾经对某铝材厂模具的使用情况作初步调查,发现模具的平均寿命不到5吨1套,80%以上的模具是以不正常的脆性断裂而失效的.新模具刚刚开始使用就告碎裂的情形也屡有所见.本文仅根据实际工作经验,从合理使用材料的角度提出几点看法.
Special-shaped aluminum extrusion die, a lot of factories are using hot work die steel 3Cr2W8V manufacturing. Raw materials into the factory after the general processing of small diameter die (200mm below) directly into the blanking after blanking, but for large Due to the large diameter of the mold is not easy to buy (for example, more than 300mm), some plants need to go through an upsetting process and annealing softening process. The above manufacturing process has some problems in selection and processing. Aluminum factory mold usage for preliminary investigation and found that the average life of the mold less than 5 tons 1 set, more than 80% of the mold is not normal brittle fracture and failure of the new mold just started to use the case of fragmentation Also often see this article only based on actual work experience, from the perspective of the rational use of materials point of view.