采用水玻璃作壳型砂粘结剂,与树脂相比,货源广、价格便宜。另外,当壳型浇注时,因水玻璃不焦化、燃烧,壳型强度在开始浇注时还有所回升,即使较大的铸件也可以不填砂浇注。我厂制造安装的一条水玻璃砂四工位壳型生产线(见图1),经过一年多的调试,已于去年十月份投入正常生产。 Water glass for shell sand binder, compared with the resin, wide supply, the price is cheap. In addition, when the shell-type casting, because the water glass does not coking, burning, shell-type strength at the beginning of casting there is some recovery, even larger castings can not fill sand casting. I plant manufacturing and installation of a water glass sand four-station shell-type production line (see Figure 1), after more than a year of commissioning, in October last year, put into normal production.