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《Industrial Engineering Journal》 1991-01
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Liang Zhilin Shen Xianqin Yang Bo (Dept. of Metal Material Science Refrigeration Engineering)  
The cured strength,retained strength and technical prcperties of modified sodium silicate bonded sand were examined.The selection of modifying agents and the compositions of the sand mixture were also described.By modifying sodium silicate with TPN the bond strength can be increased by about one fifth to one third while the retained strength after heating at high temperature can be reduced greatly.Experiments show that the modified molding sand has advantages of higher bond strength,better collapsibility and casting quality.The mechanism of the strength and collapsibility improvement with TPN has been also discussed in detail.
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Chinese Journal Full-text Database 10 Hits
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