The design of the semi-solid electromagnetic stirrer

               Semi-solid metal casting process is considered to be one of the most promising preparative technique of the near net shape and new material preparation in 21st century.                  System Over View:                1,The system adopts IPM intelligent power module as the core device, itself has a short circuit, over-current, overheating, under-voltage protection function, in the design of the system add a reliable buffer circuit and other anti-interference circuit.                2,Using industrial-grade single-chip computer as core control, it can be adapted to the harsh industrial field, data collection is accurately, processing speed is fast.                3,Switch, contactor, rectifier, filter, buffer circuits and other electronic devices, all choose the reliable device, in the design choose the larger pressure, flow, coefficient of thermal protection.               4,As far as possible in the structure design and manufacturing to reduce the distributed capacitance and inductance and raise resistance to radiation, induction and coupling interference ability.                5, Parameters and program design strictness, system logic inputs and downtime, can better prevent system damage caused by the error operation and forced outage.                   Outlook              Although the semisolid continuous casting technology haven't reached the level of large-scale industrial application, But in the existing experimental research and small-scale production has shown a strong vitality. Synthesizing the relevant research both at home and abroad is not hard to see, semi-solid casting technology in the following areas has a bright application prospect:               (1) High alloy and difficult deformation material forming           High alloy materials and difficult deformation material forming has been a difficult problem in the field of material processing. The semisolid continuous casting billet in the semi-solid temperature has the similar advantage of the liquid molding directly, for high alloy material no segregation, no defects casting and difficult deformation material forming smoothly found a feasible technical route. The research team researches show that, usually think not of forging white iron and high manganese steel, After made of semi-solid casting billet, in the semi-solid temperature molding thickness 2 mm, a length of more than 100 mm complex parts. Therefore, the semisolid continuous casting in terms of difficult deformation material molding with billet production will have a brilliant future.             (2) The development of a new generation steel and iron material             Now all countries in the world in the super steel research, our country also has been started important basic planning project“A new generation of iron and steel materials research”. A new generation of iron and steel material requires high clean, ultrafine, ultra-high strength, at the same time also has the potential of large scale application. In order to achieve this goal, will need to adopt continuous casting technology to made blank, while the existing continuous casting billet are widespread columnar crystal area is big, the macro segregation seriously flawed. The semisolid continuous casting billet tiny grains, less of macrosegregation advantage will no doubt be less for a new generation of iron and steel material blocking a worth exploring the technical route.               (3) Composite material blocking and molding             Composite materials are a rookie of materials science, but so far, the preparation of composite materials and its large-scale timber is still a problem. The semisolid continuous casting in solve this problem will have a brilliant future, It has been confirmed by numerous test institute. In a word, The semisolid continuous casting technology in high alloy material, difficult deformation, fine crystal homogenizing steel materials and high value-added new materials forming has a unique technical advantages.