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通过优化组合实验，选取符合触变流体的悬浮剂和粘结剂。提出了合理的涂料配制方案，研究出适宜树脂砂的型（芯）涂料。
Through the optimization of the combination of experiments, select the thixotropic fluid suspension and binder. Put forward a reasonable coating preparation program, developed a suitable resin sand type (core) coating.