【摘要】 在氧化镁包埋料中改变结合剂铝酸钙水泥的含量,研究其对包埋料性能的影响,结果发现:随着铝酸钙水泥含量的增加,包埋料的初凝时间缩短,流动性变差,当铝酸钙水泥的含量大于20%时,铝酸钙水泥的加入可明显提高包埋料的耐压强度。更多还原

【Abstract】 The influence of CA cement on properties of MgO-based investment materials has been studied.The results show as follows:with increment of CA cement content,the fluidity of MgO -based investment materials reduces and the time of solidification reduces.When CA cement content is more than 20%,the compressive strength of the investment increases with the increment of CA cement content.更多还原