Teh suitable diluent and dilute sodium silicat were studied and developed. The productive testsshowed that the sand core possessed good strength and collapsibility.

• 通过对稀释水玻璃特点的研究，试验选定了一种稀释剂，研制出一种性能良好的稀释水玻璃，生产验证表明，用其制造的型芯具有良好的溃散性。