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Vacuum Casting Is The Process Of Using A Ventilated Mold

Essai Industries Co.,Ltd | Updated: Oct 18, 2017

Vacuum casting is the process of using a ventilated mold. The molten metal flows into the mold by air pressure and then removes the air to form a vacuum. This casting method is mainly used for small parts with fine details or jewelry.

Vacuum casting equipment, three kinds of sealed form, is based on everyone in the actual use of summed up the three unreasonable seal, the following for everyone to explain in detail.

1 Vacuum casting equipment packing seal

Vacuum casting equipment, packing seal, is the most common kind of seal, is injected into the shaft through the form of water, constantly pouring a certain pressure inside the filler water, a vacuum casting equipment to prevent the pump body leakage; for not suitable for use Impeller shaft seal multi-stage series pump, the use of packing shaft seal. Packing shaft seal structure is simple, easy maintenance, cheap.

2 Vacuum casting equipment for impeller seal

Vacuum casting equipment of the impeller seal, is through a reverse centrifugal force of the impeller to prevent the slurry leakage. In the vacuum casting equipment imported positive pressure value is not greater than the pump outlet pressure value of 10% of the single-stage pump or multi-stage series pump pump can be used to pay the first wheel seal, the impeller shaft seal without shaft seal water, not Dilute the slurry, the sealing effect is good and so on. Therefore, in the case where dilution is not allowed in the slurry, such a seal may be considered.

3 Mechanical seal of vacuum casting equipment

Vacuum casting equipment, mechanical seals, the general requirements of the seal is relatively high use. In particular, some chemical, food field, not only requires a seal, and the most important is not allowed to join the additional components into the pump body.