Process for preparing sand cores and molds
    4.
    发明授权
    Process for preparing sand cores and molds 失效
    砂芯和模具的制备工艺

    公开(公告)号:US4484616A

    公开(公告)日:1984-11-27

    申请号:US342307

    申请日:1982-01-25

    IPC分类号: B22C1/24 B22C1/00 B22C1/16

    CPC分类号: B22C1/24

    摘要: An improved process for preparing foundry cores and molds using a foundry aggregate and a binder therefor wherein the aggregate is mixed with an aqueous suspension of cereal flour and then with a core oil, the improvement comprising mixing the aggregate with phosphoric acid or sulfuric acid before mixing with the aqueous suspension of the cereal flour.

    摘要翻译: 一种用于使用铸造骨料及其粘合剂制备铸造芯和模具的改进方法,其中将骨料与谷物粉的水性悬浮液,然后与芯油混合,改进包括在混合之前将骨料与磷酸或硫酸混合 与谷物粉的水性悬浮液。

    Process for preparing cores and molds
    6.
    发明授权
    Process for preparing cores and molds 失效
    制备核心和模具的工艺

    公开(公告)号:US4445565A

    公开(公告)日:1984-05-01

    申请号:US512252

    申请日:1983-07-11

    IPC分类号: B22C1/18

    CPC分类号: B22C1/185

    摘要: A combination binder and hardener therefor for a foundry aggregate wherein a linear metal polyphosphate or ammonium polyphosphate is used as the binder, the hardener is a mixture of phosphoric acid and a source of polyvalent metal cations.

    摘要翻译: 用于铸造骨料的组合粘合剂和硬化剂,其中使用线性金属多磷酸盐或多磷酸铵作为粘合剂,所述固化剂是磷酸和多价金属阳离子源的混合物。