Due to the intermittent production process in the batching production of the Reduction weighing Feeding machine, the batching of the next mold is only carried out after the batching of materials in each mold is completed and unloaded. During automatic operation, the operator modifies the weight of the ingredients on the touch screen based on the raw material formula data given by the laboratory and downloads it to the PLC. Press the start operation button, and the frequency converter of the powder slurry pump starts to work. The powder slurry begins to enter the hopper scale. The PLC detects the weighing data of the hopper scale. The powder slurry is quickly added first. When it approaches the weight value given by the formula (such as the difference ≤10%), the speed of the frequency converter of the slurry pump is adjusted according to the control table prepared in advance, thus ensuring the discharging speed of the slurry. It also ensures the measurement accuracy.

When the material is added to the given weight of the formula, the frequency converter of the slurry pump stops running and the powder slurry metering is completed. Immediately after, the pneumatic valve for discharging the slurry hopper scale opens, and the powder slurry enters the batching tank. While the powder slurry was being measured, the measurement of other powder materials also began simultaneously. The weighing feeding machine adopts the reduction method. When the material is conveyed from the silo into the hopper scale, it is weighed on the hopper scale. Then, when the material is discharged from the hopper scale to the batching tank, it is weighed again on the hopper scale to calculate the weight of the discharged material. The tubular screw conveyor from the hopper scale to the batching tank is driven by a frequency converter. The metering process is similar to that of the slurry. First, the material is added quickly. When it approaches the given weight value of the formula (such as the difference ≤10%), Adjust the speed of the frequency converter of the powder pump according to the pre-prepared control table to complete the feeding quickly and accurately. The feeding process of other powder materials is similar to this.

To ensure that the raw materials do not settle, while the powder slurry is being discharged, the stirring impeller in the batching tank starts to stir. To achieve a good chemical reaction effect, the temperature inside the mixing tank is most suitable at around 45℃. Stir continuously for 3 minutes. Finally, manually add the well-mixed aluminum powder solution. After 1 minute, open the pouring valve and pour the mixed material into the mold car. The pouring is completed in one mold.