鋳造工学
Online ISSN : 2185-5374
Print ISSN : 1342-0429
ISSN-L : 1342-0429
75 巻, 12 号
選択された号の論文の9件中1~9を表示しています
研究論文
  • 永田 新, 内田 富士夫, 守時 一
    2003 年 75 巻 12 号 p. 822-828
    発行日: 2003/12/25
    公開日: 2011/02/01
    ジャーナル フリー
      In precision casting where production is of comparatively small scale, the use of photo-solidified polymer models in place of conventional lost-wax models can be recommended. In precision casting using photo-solidified polymer models by the same process as that using wax models, the mold may fracture due to thermal stress arising in the baking process where the model is melted and evaporated, because polymer has higher rigidity than wax. The polymer baking process was simulated numerically to predict the occurrence of mold fracture and experiments were conducted to verify the prediction. The results confirmed that there exists consistency between the fracture prediction and crack phenomenon. Improved productivity and reliability are therefore greatly expected with the application of this technique using photo-solidified polymer models to mold manufacturing for precision casting.
  • 頃安 貞利, 相馬 宏之, 小池 勝美
    2003 年 75 巻 12 号 p. 829-834
    発行日: 2003/12/25
    公開日: 2011/02/01
    ジャーナル フリー
      The lost foam casting process was investigated experimentally using a sheet lamination model. The change in the mass with time of the sheet lamination model in a crucible heated in an electric furnace was measured. The temperature at which the sheet lamination model disappeared was obtained. The sheet lamination model was then placed in a plaster mold, heated, and made to disappear. Aluminum alloy was poured into this plaster mold, and dimensional changes in the casting from the sheet lamination model were measured. It was found that dimensional changes of the sheet fiber direction are not significant, but that of the laminating direction are large. This dimensional changes decreased when a sheet lamination model coated with cyanoacrylate adhesive was used.
技術報告
解説
技術報告
feedback
Top