公开(公告)号：US5643528A

公开(公告)日：1997-07-01

申请号：US467435

申请日：1995-06-06

申请人： Brian W. Le Gras

发明人： Brian W. Le Gras

IPC分类号： C22B9/16 ,  C22B26/22 ,  F27B14/08 ,  F27D3/00 ,  F27D3/14 ,  F27D19/00 ,  F27D21/00 ,  C21D11/00

CPC分类号： C22B26/22 ,  C22B9/16 ,  F27D19/00 ,  F27B2014/0812 ,  F27B2014/085 ,  F27D2003/0054 ,  F27D21/0028 ,  F27D3/00 ,  F27D3/14 ,  Y10S266/901

摘要： Apparatus for a fully automated magnesium melt system. Raw magnesium ingots are moved through and controllably heated in a preheater chamber before they are introduced into a melt cell. A probe monitors the metal level and a control unit causes ingot charging as determined by a process level set point or temperature overshoot. There are two zones of heating in the melt cell with each zone supplied by its own 3 phase zero cross fired silicon controlled rectifier and firing board which is gated by a gating signal. This controls how much the SCR's are allowed to conduct. The amount of error between the metal bath set point and the actual metal bath temperature automatically determines how much of the 4-20 mA gating signal is required to maintain the set metal bath temperature. Liquid magnesium is transferred from the melt cell to a die cast machine by a siphon transfer tube which has two sets of electrical heating elements. A programmable logic controller, with suitable programming, controls the temperature at all times of the molten magnesium and preheating of the ingots. This PLC and other monitoring or remotely located computers provide complete process control and information.

摘要翻译： 全自动镁熔体系统的设备。 在将镁镁锭引入熔融池之前，将其在预热室中移动并可控制地加热。 探头监测金属水平，控制单元引起晶锭充电，由过程电平设定值或温度过冲确定。 在熔池中有两个加热区域，每个区域由其自己的三相零交叉点火可控整流器和由门控信号选通的点火板提供。 这可以控制SCR允许执行多少。 金属浴设定点和实际金属浴温度之间的误差量自动确定需要多少4-20 mA门控信号来保持设定的金属浴温度。 液体镁通过具有两组电加热元件的虹吸管传送管从熔体传送到压铸机。 具有合适编程的可编程逻辑控制器可控制熔融镁的所有时间的温度和锭的预热。 该PLC和其他监控或远程位置的计算机提供完整的过程控制和信息。