酯硬化水玻璃砂新工艺,在铸造行业已应用多年,其优越性得到了充分的体现,发展这一工艺已势在必行。但是,由于过去有机酯的来源短缺和品种、质量上的不足,使该工艺的应用和推广受到了一定程度的影响。 Ester hardening sodium silicate sand new technology, casting industry has been applied for many years, its superiority has been fully reflected that the development of this process is imperative. However, the application and promotion of this technology have been affected to a certain extent due to the shortage of sources and the variety and quality of organic esters in the past.