On Stickiness of Sand on Patterns in Molding Operation (1)

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  • 鋳物砂の模型に対する「しみつき」性について (1)
  • 鑄物砂の模型に対する「しみつき」性について〔1〕
  • イモノズナ ノ モケイ ニ タイスル シミツキ セイ ニ ツイテ 1

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  Results of our various experiments conducted for prevention of sand sticking on patterns in molding operation are herewith set forth as under : <br>  (1) Chemical and wax treatments on the surfaces of patterns decrease the sticking sand. <br>  (2) If finishing of pattern surfaces is too smooth, stickiness of sand increases. <br>  (3) Preheating on patterns prevents adhesion of sand. <br>  (4) Wood patterns cause more adhesion of sand than metal patterns. <br>  (5) Characteristic U-shaped curves were obtained between stickiness and moisture content of sand. If moisture content of sand is within the limits, stickiness of sand is at the lowest, but it below or above its limits, it increases considerably.

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