The best melting temperature on zamak die casting: the melting point of zinc alloy for die casting is 382 ~ 386 °C, and the suitable temperature and low temperature control is an important factor for the zinc alloy composition control. In order to ensure the liquid alloy with good liquidity, zinc pot temperature of molten metal is 415 ~ 430 °C, thin wall and complex die casting temperature desirable upper limit; wall thickness and a simple desirable lower limit value. The temperature of metal liquid in the central smelting furnace is 430 ~ 450 °C. Enter the gooseneck liquid metal temperature and the temperature is almost the same as the zinc pot. By controlling the temperature of the zinc pot, the casting temperature can be accurately controlled.
When the melting temperature is too low, the flow property of the alloy is poor, which is not conducive to the formation, which affects the surface quality of the zamak die casting.
The melting temperature is too high, the reaction of iron crucible and zinc liquid is accelerated, the crucible surface oxidation reaction to produce Fe2O3 and other oxides; iron element also reacts with zinc to produce FeZn13 (zinc dross), and dissolved in the zinc solution. The aluminum and the magnesium element burning loss, the metal oxidation rate speeds up, the burning loss quantity increases, zinc dross increase. Thermal expansion occurs card die hammer phenomenon. The iron element in cast iron crucible is more and more, and the reaction of zinc and iron at high temperature is accelerated. Hard particles can form Fe Al compounds, causes the hammer head and the goose neck excessive wear. The iron element in cast iron crucible is more and more, and the reaction of zinc and iron at high temperature is accelerated. Hard particles can form Fe Al intermetallic compounds, the hammer, gooseneck excessive wear. Fuel consumption increases accordingly. The higher the temperature, the casting crystallization is greater and reduce the mechanical performance.
The above article from KENOS official website, reproduced please specify. kenosblog1603
When the melting temperature is too low, the flow property of the alloy is poor, which is not conducive to the formation, which affects the surface quality of the zamak die casting.
The melting temperature is too high, the reaction of iron crucible and zinc liquid is accelerated, the crucible surface oxidation reaction to produce Fe2O3 and other oxides; iron element also reacts with zinc to produce FeZn13 (zinc dross), and dissolved in the zinc solution. The aluminum and the magnesium element burning loss, the metal oxidation rate speeds up, the burning loss quantity increases, zinc dross increase. Thermal expansion occurs card die hammer phenomenon. The iron element in cast iron crucible is more and more, and the reaction of zinc and iron at high temperature is accelerated. Hard particles can form Fe Al compounds, causes the hammer head and the goose neck excessive wear. The iron element in cast iron crucible is more and more, and the reaction of zinc and iron at high temperature is accelerated. Hard particles can form Fe Al intermetallic compounds, the hammer, gooseneck excessive wear. Fuel consumption increases accordingly. The higher the temperature, the casting crystallization is greater and reduce the mechanical performance.
The above article from KENOS official website, reproduced please specify. kenosblog1603
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