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1. 发明申请

US20160008881A1 METHOD OF UNIDIRECTIONAL SOLIDIFICATION OF CASTINGS AND ASSOCIATED APPARATUS 审中-公开
标题翻译：铸造和相关设备的单向固化方法
公开(公告)号：US20160008881A1
公开(公告)日：2016-01-14
申请号：US14859958
申请日：2015-09-21
申请人： Alcoa Inc.
发明人： Men G. Chu , Ho Yu , Alvaro Giron , Kenneth Joseph Kallaher , Jeffrey J. Shaw
IPC分类号： B22D27/04 , B22D7/00
CPC分类号： B22D27/045 , B22D7/00
摘要： Molten metal is injected uniformly into a horizontal mold from a feed chamber in a horizontal or vertical direction at a controlled rate, directly on top of the metal already within the mold. A cooling medium is applied to the bottom surface of the mold, with the type and flow rate of the cooling medium being varied to produce a controlled cooling rate throughout the casting process. The rate of introduction of molten metal and the flow rate of the cooling medium are both controlled to produce a relatively uniform solidification rate within the mold, thereby producing a uniform microstructure throughout the casting, and low stresses throughout the casting. A multiple layer ingot product is also provided comprising a base alloy layer and at least a first additional alloy layer, the two layers having different alloy compositions, where the first additional alloy layer is bonded directly to the base alloy layer by applying the first additional alloy in the molten state to the surface of the base alloy while the surface temperature of the base alloy is lower than the liquidus temperature and greater than eutectic temperature of the base alloy −50 degrees Celsuis.
摘要翻译：熔融金属以受控的速率从水平或垂直方向的进料室均匀地注入到水平模具中，直接在已经在模具内的金属的顶部上。将冷却介质施加到模具的底表面，随着冷却介质的类型和流速的变化，以在整个铸造过程中产生受控的冷却速率。控制熔融金属的引入速率和冷却介质的流量都被控制以在模具内产生相对均匀的凝固速率，从而在铸件中产生均匀的微观结构，并且在整个铸件中产生低应力。还提供了多层锭产品，其包括基底合金层和至少第一附加合金层，所述两层具有不同的合金组成，其中第一附加合金层通过施加第一附加合金直接结合到基底合金层在基体合金的表面温度低于液相线温度并且大于基体合金的共晶温度-50℃时，熔融状态下的熔融态。

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