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common problem

Precautions for fan nozzle maintenance

Release time: August 22, 2019 17:15:33, hits: 896

The maintenance of fan-shaped nozzle includes flow rate, pressure, spray angle, coverage, impact force, temperature, material, application and so on, which are often related and restricted by each other.

The fan-shaped nozzle used in phosphating process can be maintained by centrifugal nozzle with good atomization, fine and uniform water particles and weak impact force. Take "Z" cone nozzle as an example, the best distance between fan nozzle and workpiece is 40cm-50cm, which can disperse and spray liquid atomization. The fan-shaped nozzles can be arranged in two forms: parallel and cross. For the channel type, the spray effect is better if the vertical cross arrangement is adopted.

Precautions for fan nozzle maintenance

   1. Flow rate and pressure, spray angle and coverage are all in direct proportion. The purpose of any nozzle is to keep the bath liquid in contact with the workpiece continuously. The flow rate is more important than the pressure.

The temperature of the liquid does not affect the spray performance of the nozzle, but it affects the viscosity and specific gravity, and also affects the selection of materials. The material of the nozzle should also be determined according to the chemical characteristics of the bath solution. For non corrosive bath liquid, bronze casting or plastic die casting can be used according to the difficulty of processing.

   3. In order to prevent corrosion, non-metallic materials can be used; nylon plastics can be used for strong corrosive bath solutions such as sulfuric acid and hydrochloric acid; acid resistant stainless steel is generally used as nozzle material for phosphating bath liquid, and stainless steel or nylon material can be directly used to prevent corrosion.

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