A New Direct-Pour In-Mold (DPI) Technology for Producing Ductile and Compacted Graphite Iron Castings.

Jason Hitchings ; Jay R. Hitchings

关键词: ALLOYS;    CASTING;    CASTINGS;    CONTAINERS;    FLOW RATE;    GRAPHITE;    INOCULATION;    IRON;    MAGNESIUM Materials Science;    Energy Conservation;   

DOI  :  10.2172/886952
RP-ID  :  DOE-GO12060-241.3
PID  :  OSTI ID: 886952
Others  :  TRN: US200719%%360

学科分类：能源（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

A new "Direct Pour In-Mold" (DPI) Magnesium treatment technology has been developed that can produce both Nodular and Compacted Graphite iron. The DPI technology converts the standard horizontal runner system into a vertical one, by placing a Magnesium Ferrosilicon treatment alloy and molten metal filter into a specially designed container. The DPI container is easily placed into either vertically or horizontally parted molds, and then a base metal can be poured directly into it. The metal is treated and filtered as it passes through, and then proceeds directly into a runner or casting cavity. Various sizes of containers provide all of the necessary components required to deliver a range of weights of treated and filtered metal at accurate and consistent flow rates. The DPI containers provide energy savings over competing techniques, increased mold yields, very high Magnesium recovery, zero Magnesium fume, and no post inoculation is required. By treating the metal just prior to it entering a casting cavity many other benefits and advantages are also realized.