Lost foam casting apparatus for reducing porosity and inclusions in metal castings
    2.
    发明授权
    Lost foam casting apparatus for reducing porosity and inclusions in metal castings 失效
    用于减少金属铸件中孔隙率和夹杂物的失水泡沫铸造设备

    公开(公告)号:US06619373B1

    公开(公告)日:2003-09-16

    申请号:US10132878

    申请日:2002-04-25

    IPC分类号: B22C908

    摘要: Apparatus for the gravity-cast, bottom-fill, “lost foam” casting of metal castings, including a fugitive, pyrolizable pattern (for forming a casting cavity), and a hollow sprue (for conducting melt to the casting cavity) embedded in a bed of loose sand. The sprue is free from pyrolyzable foam and conducts melt from above the pattern to a gating system supplying melt to the pattern. The sprue is constructed so as to cause the melt to approach the gating system from beneath and keep any pyrolysis products from entering the sprue.

    摘要翻译: 用于重力铸造,底部填充的“失去泡沫”铸造金属铸件的装置,包括一个易燃的可热化图案(用于形成铸造腔体)和一个嵌入在一个铸造腔中的中空浇道(用于将熔体导入铸造腔) 松沙床。 浇口不含可热解的泡沫,并且从图案上方引导熔体到向熔体提供图案的浇注系统。 浇口被构造成使得熔体从下方接近浇注系统,并保持任何热解产物不会进入浇口。

    Method of sand coremaking
    3.
    发明授权
    Method of sand coremaking 有权
    砂芯制作方法

    公开(公告)号:US06843303B2

    公开(公告)日:2005-01-18

    申请号:US10358133

    申请日:2003-02-04

    CPC分类号: B22C9/12 B22C15/10

    摘要: A method for making sand particle foundry mold members. Sand particles are coated with an aqueous dispersion of a suitable binder material such as a gelatin gel. The moist gelatin coated particles are gravity fed into a pattern box for the mold member and subjected to multi-axis vibration to pack the sand in the pattern box. The moist sand is then heated with radio frequency energy to promote binder flow to the corners of the particles, and air flow is initiated to transport water from the mass of particles to harden the mass of particles into the mold member.

    摘要翻译: 砂粒铸造模具制造方法。 砂颗粒用合适的粘合剂材料如明胶凝胶的水分散体涂覆。 将潮湿的明胶涂覆的颗粒重力加入用于模具构件的图案盒中,并经受多轴振动以将图案盒中的沙包装。 然后用射频能量加热潮湿的砂,以促进粘合剂流到颗粒的角落,并且启动空气流以从颗粒物质输送水以将颗粒的质量硬化到模具构件中。