The wax molds are dipped into waterglass solution, with surface coated by the solution.

将蜡件组浸入含有玻璃等的缸中，上。

In general, the higher the atmospheric temperature strength of the sodium silicate sand is, the more deteriorative its collapsibility becomes.

玻璃的常温强度越高,其溃散性通常越差。

The results have shown that the brown alundum coatings are high-class neutral refractory coatings and are used with success in iron and steel cast-ings.

试验结表明,所研究的棕刚玉是一种优质的中性抗粘,适用于粘土、玻璃及树脂自硬的铸型和型芯.

Abstract: When water glass seriflux as chemistry injection material, its kinetic viscosity is varying with time, so the process of seriflux permeating in the sand is complicated.

玻璃类浆液作为化学灌浆材，其粘度在随时间变化，因此浆液在土中的渗流过程较复杂。