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首页> 外文期刊>International journal of automation technology >Permeability Performance on Porous Structure of Injection Mold Fabricated by Metal Laser Sintering Combined with High Speed Milling
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Permeability Performance on Porous Structure of Injection Mold Fabricated by Metal Laser Sintering Combined with High Speed Milling

机译：金属激光烧结与高速铣削相结合制造的注射模多孔结构的渗透性能

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摘要

Metal Laser Sintering Combined with High Speed Milling is the technology in which high speed cutting is united with the selective laser sintering process. By changing the conditions of laser beam irradiation, it is possible to build a sintered porous media which has a hole in an arbitrary part by this process. If the mold tool of this structure is used for injection molding, it is proved that the compressed air imprisoned in the mold and the gas coming out of resin are discharged from it, poor molding can be reduced. However, as sintered porous media is hard to control for the size and position of an ordered macroporous structure, it is difficult to build porous media with an ordered macro-porous structure deliberately. This results in a smaller amount of airflow and a greater variation in airflow. In order to solve this problem, latticework is proposed as a new gas permeable structure in this paper. Different from a lower density sintered structure, metallic powder is sintered and fused using a laser beam with a high energy density, and fusion is carried out into the latticework structure. The fused gaps of the structure serve as a hole. Since each hole will keep the position and become the ordered macroporous structure even if lamination continues, the improvement in performance of gas permeability is expected. The airflow equation for the structural design to satisfy a required airflow rate is also examined in this paper.
机译：金属激光烧结与高速铣削相结合的技术是将高速切削与选择性激光烧结工艺相结合的技术。通过改变激光束照射的条件，可以通过该过程构建在任意部分具有孔的烧结多孔介质。如果将这种结构的模具用于注射成型，则证明滞留在模具中的压缩空气和从树脂中排出的气体从模具中排出，可以减少成型不良。然而，由于难以控制有序大孔结构的尺寸和位置的烧结多孔介质，因此难以故意制造具有有序大孔结构的多孔介质。这导致更少量的气流和更大的气流变化。为了解决这个问题，本文提出了网格结构作为一种新型的透气结构。与低密度烧结结构不同，使用具有高能量密度的激光束对金属粉末进行烧结和熔合，并且将熔合进行到晶格结构中。结构的熔合间隙用作孔。由于即使层压继续，每个孔仍将保持该位置并变成有序的大孔结构，所以期望透气性的提高。本文还研究了满足所需风量的结构设计的风量方程。

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  • 来源
    《International journal of automation technology》 |2012年第5期|p.576-583|共8页
  • 作者

    Hiroyuki Narahara; Sho Takeshita; Hirofumi Fukumaru; Hiroshi Koresawa; Hiroshi Suzuki;

  • 作者单位

    Department of Mechanical Information Science and Technology, Kyushu Institute of Technology 680-4 Kawazu, Iizuka-shi, Fukuoka 820-8502, Japan;

    Department of Mechanical Information Science and Technology, Kyushu Institute of Technology 680-4 Kawazu, Iizuka-shi, Fukuoka 820-8502, Japan;

    Department of Mechanical Information Science and Technology, Kyushu Institute of Technology 680-4 Kawazu, Iizuka-shi, Fukuoka 820-8502, Japan;

    Department of Mechanical Information Science and Technology, Kyushu Institute of Technology 680-4 Kawazu, Iizuka-shi, Fukuoka 820-8502, Japan;

    Department of Mechanical Information Science and Technology, Kyushu Institute of Technology 680-4 Kawazu, Iizuka-shi, Fukuoka 820-8502, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    rapid prototyping; injection molding; laser sintering; layered fabrication; additive manufacturing;

    机译：快速成型;注塑成型激光烧结分层制作;添加剂制造;

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