| 摘要 |
<p>A process for preparing moulds for manufacturing clay articles, provided with a replaceable moulding surface that can be replaced when worn out, provides the forming of a negative (3) in said mould (1) of a material capable of being drawn that is then spray coated with a mixture (7) comprising from 85% to 90% of tungsten carbide and from 15% to 10% of cobalt carbide, such coating imparting to the sheet (3) very good properties of hardness and wear resistance for the molding of the clay articles. <IMAGE></p> |
