A metal workpiece phosphating device

Abstract

A metallic workpiece phosphorization device comprises a phosphorization box, heating pipes, a temperature control system, a temperature sensor, a self-priming pump, a spraying system and a placing mechanism, wherein the upper surface of the phosphorization box is provided with a box cover, and the bottom of the phosphorization box is provided with a drain outlet; the placing mechanism is arranged in the middle of the phosphorization box; the self-priming pump is arranged in a side face of the lower part in the phosphorization box, the controller of the self-priming pump is arranged on the outer part of the upper end of the phosphorization box, and the self-priming pump is connected with the spraying system through a main pipe; the spraying system is arranged right above the placing mechanism in the phosphorization box, and the spraying system comprises a branch pipe and a sprayer; the heating pipes are uniformly arranged at the lower bottom surface of the phosphorization box and the bottom ends of the other three side faces except for a side surface where the self-priming pump is arranged, the temperature sensor is located in the phosphorization box near the self-priming pump, and the temperature control system is connected with the temperature sensor and the heating pipes. According to the phosphorization device provided by the invention, surface phosphorization of workpieces is uniform, phosphorization temperature is reasonably controlled, and the phosphorization device has the advantages that the change of phosphorization solution concentration is reduced and phosphorization quality is improved.

Description

technical field [0001] The invention relates to metal processing equipment, in particular to a metal workpiece phosphating device. Background technique [0002] The phosphating process is the process of forming a phosphate film on the metal surface by chemical and electrochemical reactions. The main purpose of phosphating is to provide a protective film for the base metal, which can effectively prevent the metal from being corroded to a certain extent. Phosphating can also be used as a primer before painting to improve the adhesion and anti-corrosion ability of the paint film layer. In addition, phosphorus It can also play the role of anti-friction lubrication in metal cold working process. The phosphating device is a kind of equipment used in the phosphating process. It can be seen that the phosphating equipment plays a very important role in the efficiency of phosphating and the quality of phosphating. [0003] CN203976915U discloses a metal workpiece phosphating device,...

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Problems solved by technology

[0003] CN203976915U discloses a metal workpiece phosphating device, comprising a phosphating box, a spray system, a temperature control system, a temperature sensor, a heating pipe, a self-priming pump and a mobile trolley, and the spray system is arranged on the top of the phosphating box, and the temperature sensor is installed On the side of the phosphating box, the heating pipe is set at the bottom of the phosphating box, the self-priming pump is installed inside the phosphating box, the temperature control system is connected with the temperature sensor and the self-priming pump, and the phosphating box is equipped with rails and rail brackets. The mobile trolley is arranged on the track. Although the utility model can automatically heat the phosphating solution, spray the metal workpiece automatically, and automatically control the temperature through the above structure, the phosphating speed is improved and the labor intensity of the workers is reduced. However, the utility model The heating tubes are located at the bottom of the phosphating tank, which may easily cause uneven temperature of the phosphating solution in the phosphating tank. The temperature measured by the temperature sensor may differ greatly from the actual temperature of the phosphating solution, and the workpiece is clamped in the On the moving trolley, it is easy to cause uneven phosphating on the surface of the workpiece, especially the clamping part; in addition, the spray system is set on the upper part of the phosphating tank, so the phosphating tank must be an open structure, so that the phosphating solution During the heating process, the solvent in the phosphating solution is partially volatilized, increasing the concentration of the phosphating solution will inevitably affect the quality of phosphating, and when the phosphating solution is sprayed, the temperature will also decrease when it reaches the surface of the workpiece, affecting the quality of the phosphating solution. Phosphate quality

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