| 摘要 |
1,254,733. Mould linings. KRISTIANSANDS JERNSTOPERI A.S. 8 Oct., 1968 [13 Oct., 1967], No. 47712/68. Heading B3F. [Also in Division C3] Sand casting moulds, prior to casting, are treated by applying thereto a mould blacking comprising bentonite, kieselguhr and at least one filler. The filler may be a coke mealgraphite blacking, chromium magnesite meal or magnesite meal. The mould blacking preferably contains at least 30% by weight kieselguhr. |
