| 摘要 |
<p>In a method for producing ceramic objects of large size, particularly objects of large dimensions in a single piece and with thin walls, the object made of plastic ceramic material is shaped, dried and fired in a manner known per se. The main feature of the invention is that a material losing the major part of its volume, leaving substantially no trace during the firing, with a minimum specific weight and a grain size comprised between 0.5 and 3.5 mm is added before shaping to at least part of the base material in a proportion depending on the plasticity of the base material and comprised between 20 and 50% by volume, at reduced temperature, preferably between 200 and 300oC. The material which is appropriate to this utilization is foamed polystyrol.</p> |
