Material is QT450

Check check the switching power supply of the semiconductor material DC frequency conversion equipment, input the working voltage (meter) make sure that everything is normal; check make sure that all cooling systems are normal there is no leakage; check make sure that the furnace wall is disordered the equipment is normal; check make sure that the furnace material (crucible) is free of transverse cracks, clean repair part of the etched furnace furnace door 。

Preparation of recycling waste in advance

High quality mechanical casting shall be weighed for all kinds of re refining raw materials according to the material model of pouring goods (the same type of rubber inlet bar, recycling waste, waste goods, etc.)

Weighing of waste steel

For the weighed waste, calculate the amount of various elements, compare the ablation rate of the elements, calculate the filling amount of each element.

According to the calculated filling amount, various kinds of aluminum alloy weighing (including deaerator calcium silicon aluminum) were carried out.

For the rubber inlet bar, waste materials returned to the furnace, waste parts waste steel materials, they shall be clean free of paint, serious rust, oil stain other dirty matters. When there is serious rust oil stain, it should be removed by baking shot blasting before smelting.

All the aluminum alloys (including deoxidizer, slag making agent rubber inlet covering agent) must be kept dry, if necessary, they should be baked in the calciner to remove water.