Production of sand mold for the supply of liquid metal under low pressure from the under side by a mold part, comprises modifying the mold part by which an additional supply canal is determined that flows at the under side of the sand mold

摘要

The method for the production of sand mold (100) for the supply of liquid metal under low pressure from the under side by a mold part (101) useful for the production of metallic casting piece, comprises providing a mold part for the production of sand mold to be filled at the top, modifying the mold part by which an additional supply canal (120) is determined that flows at the under side of the sand mold, and producing the sand mold with the modified mold part. The mold part is modified by the addition of additional mold segments. The method for the production of sand mold (100) for the supply of liquid metal under low pressure from the under side by a mold part (101) useful for the production of metallic casting piece, comprises providing a mold part for the production of sand mold to be filled at the top, modifying the mold part by which an additional supply canal (120) is determined that flows at the under side of the sand mold, and producing the sand mold with the modified mold part. The mold part is modified by the addition of additional mold segments. The additional mold segment determines the supply canal connecting at the under side of the sand mold. No material is removed from an actual product form surface of the mold part during modifying the mold part. The sand mold is produced by a group of mold parts. Independent claims are included for: (1) method for the production of metallic casting piece through supply of liquid metals at the under side of the sand mold; and (2) a sand mold.