Novel passivation device for surface treatment for metal casting

Abstract

The invention discloses a novel passivation device for surface treatment for a metal casting, and relates to the field of passivation for metal castings. The novel passivation device for surface treatment for the metal casting comprises a treatment table, wherein a liquid storage box is fixedly installed at the top of the treatment table, a liquid extraction pump is fixedly installed at one side of the liquid storage box, and a liquid extraction pipe is fixedly installed at a liquid extraction port of the liquid extraction pump; and one end of the liquid extraction pipe extends into the liquid storage box, a hose is fixedly installed at a liquid outlet port of the liquid extraction pump, a communicating pipe is fixedly installed at one end of the hose, and a plurality of spraying heads are uniformly and fixedly installed at the bottom of the communicating pipe. The novel passivation device for surface treatment for the metal casting is reasonable in structure, when a driving motor and the liquid extraction pump are started, passivation liquid can be evenly sprayed to the surface of the metal casting, and the concentration of the sprayed passivation liquid cannot be reduced, so that the passivation effect of the device is ensured; and when a circulating pump is started, waste liquid can be pumped out and purified and then flows into the liquid storage box through a liquid outlet pipe, so that recycling for the waste liquid is realized, the environment is not polluted, and resources are saved.

Description

technical field [0001] The invention relates to the field of passivation of metal castings, in particular to a novel passivation device for surface treatment of metal castings. Background technique [0002] Passivation refers to the process of metal oxidation by strong oxidants or electrochemical methods to make the surface inactive, that is, passivation. It is a method to transform the metal surface into a state that is not easy to be oxidized and delay the corrosion rate of the metal. Passivation devices are generally used in the surface treatment of metal castings. [0003] The existing passivation treatment method is usually to soak the castings to be treated in the passivation solution. Since the passivation reaction uses an excessive amount of passivation agent in the reaction pool, these passivation agents will passivate after the passivation reaction is completed. The concentration will decrease, resulting in poor passivation effect of the entire reaction pool, and ...

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Problems solved by technology

[0003] The existing passivation treatment method is usually to soak the castings to be treated in the passivation solution. Since the passivation reaction uses an excessive amount of passivation agent in the reaction pool, these passivation agents will passivate after the passivation reaction is completed. The concentration will decrease, resulting in poor passivation effect of the entire reaction pool, and poor use effect. If it is discharged directly, it will not only seriously pollute the environment, but also cause waste. For this reason, this application discloses a new type of metal casting surface treatment. Passivation devices to meet people's needs

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