一、前言 我厂熔模铸造的型壳采用天然气焙烧,由于原炉子结构老,焙烧时间长、产量低、劳动强度大,天然气消耗很高,这不仅增加了铸件成本,而且严重的浪费了能源,限制了产量的提高。为此,我们对旧焙烧炉运用近年来出现的先进节能工具和措施,进行了改造。通过半年多来的使用,效果很满意。焙烧时间大大缩短,节能达70％左右,可采用很低压力的天然气燃烧。温度场均匀,可提高型壳焙烧质量。 I. INTRODUCTION The casting shell of our factory is roasted by natural gas. Due to the old structure of the furnace, long roasting time, low output, labor intensity and high natural gas consumption, it not only increases the cost of casting but also seriously wastes energy , Limiting the increase in production. For this reason, we have rebuilt the old roaster using the advanced energy-saving tools and measures that have emerged in recent years. Through more than six months of use, the effect is very satisfactory. Baking time is greatly reduced, saving about 70%, can be very low pressure natural gas combustion. Temperature uniformity, can improve the shell roasting quality.