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首页> 外文会议>International Conference on Processing amp; Manufacturing of Advanced Materials; 20060704-08; Vancouver(CA) >Fabrication of Lotus-type Porous Metals by Continuous Zone Melting and Continuous Casting Techniques
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Fabrication of Lotus-type Porous Metals by Continuous Zone Melting and Continuous Casting Techniques

机译：连续区熔炼和连铸技术制备莲花型多孔金属

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摘要

Lotus-type porous metals with low thermal conductivity are fabricated by continuous zone melting technique, which possess directional elongated pores. The porous metals have been able to be fabricated through the conventional casting method by utilizing the solubility gap between solid and liquid in pressurized gas atmosphere. However, there is a shortcoming that the pores are coarsened in the part farther from the chill plate in the ingot. In order to overcome such a shortcoming, we developed the continuous zone melting technique and successfully produced the lotus-type porous metals with even low thermal conductivity such as stainless steel and superalloys. Furthermore, from the viewpoint of mass production with low cost, we invented novel "continuous casting technique". The molten metals dissolving gas are solidified continuously by passing through the mold cooled with chiller and thus, lotus-type porous metal plate as long as one meter was produced for short time. Sufficient uniformity of the porosity and pore size was obtained in such long porous ingots. This technique is prospective method for commercial mass production.
机译：低导热率的莲花型多孔金属是通过连续区域熔化技术制造的，具有定向的细长孔。通过利用加压气体气氛中固体和液体之间的溶解度间隙，已经能够通过常规的铸造方法来制造多孔金属。然而，缺点是在远离铸锭中的激冷板的部分中孔变粗。为了克服这样的缺点，我们开发了连续区熔化技术，并成功地生产出导热率甚至很低的荷叶型多孔金属，例如不锈钢和超合金。此外，从低成本的批量生产的角度出发，我们发明了新颖的“连续铸造技术”。熔融金属溶解气体通过通过用冷却器冷却的模具而连续地固化，因此，短时间生产了长达一米的莲花型多孔金属板。在这样长的多孔铸锭中获得了足够的孔隙率和孔径均匀性。该技术是用于商业批量生产的预期方法。

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