公开(公告)号：US4043376A

公开(公告)日：1977-08-23

申请号：US696628

申请日：1976-06-16

申请人： Yuuji Kasai ,  Hironuri Ogura ,  Atsushi Toyoda

发明人： Yuuji Kasai ,  Hironuri Ogura ,  Atsushi Toyoda

IPC分类号： B22C9/03 ,  B22C9/02 ,  B22C1/22 ,  B22C3/00

CPC分类号： B22C9/03

摘要： In preparation of a mold for metal casting, a thermosetting resin layer, preferably of a thickness in a range from 2 to 100 micrometers, is formed between the refractory filler in the molding box and a covering laminate such as a thermoplastic synthetic resin film for tightly covering the filler surface so that the thermosetting resin layer develops, during metal casting, a shell layer for reinforcing the cavity wall of the mold due to heat given by molten metal. Development of casting defects such as sand marks and blow holes and occurrence of mold crumbling can effectively be prevented by the presence of the shell layer.

摘要翻译： 在制备用于金属铸造的模具中，在模制箱中的耐火填料和诸如热塑性合成树脂膜的覆盖层压材料之间形成优选厚度为2至100微米的热固性树脂层，用于紧密 覆盖填料表面，使得在金属铸造期间，热固性树脂层由于由熔融金属产生的热而增强模具的腔壁的外壳层。 通过壳层的存在可以有效地防止铸造缺陷如砂痕和气孔的发生以及模具破碎的发生。