常用的热壳型法可以生产比普通湿型铸造精确和光洁的铸件,且具有节约砂子的优点。而采用冷硬粘结剂的冷壳型法优于通常的热壳型法。采用薄壁冷硬壳型的可行性是英国铸铁研究协会(BCIRA)首先提出来的。他们用冷硬树脂粘结剂和水玻璃—CO_2法手工生产出大量满意的铸件。这些成果鼓舞他们在工业上推扩用冷壳型法生产铸件。冷壳型自动造型机采用气动薄膜压实及气体固化成型。每小时动作80个循环,整机是密闭的,用负压控制气味外逸。该机设有保护装 Commonly used hot shell type method can produce more accurate and smooth casting than ordinary wet casting, and has the advantages of saving sand. The use of cold and hard binder cold shell method is better than the usual hot shell method. The feasibility of using thin-walled chilled shell type is first proposed by the British Association of Cast Iron Research (BCIRA). They used chilled resin binder and water glass-CO_2 method to produce a large number of satisfactory castings. These results encouraged them to industrially push for the production of castings using the cold shell method. Cold shell automatic molding machine using pneumatic film compaction and gas curing molding. 80 cycles per hour action, the machine is sealed, with a negative pressure to control the odor escape. The machine is equipped with protective equipment