Tips for the Selection of Nozzles
The selection of the factors of the nozzle flow are pressure, spray angle, coverage, impact, temperature, materials, applications, and these factors are often implicated each other, mutual restraint. Flow and pressure, spray angle and coverage are proportional to the relationship. Any nozzle injection purpose is to maintain continuous so that the bath in contact with the workpiece, the flow of this factor is more important than the pressure. The temperature of the liquid does not affect the performance of the spray nozzle, but it affects the viscosity and specific gravity, but also influences the choice of materials. The nozzle material with the humidifier system should be determined based on the chemical properties of the bath, according to the ease of processing of non-corrosive bath, cast in bronze or plastic die-casting. To prevent corrosion, non-metallic materials can be used; the strong etching bath of sulfuric acid, hydrochloric acid, nylon plastic can be used; nozzle for phosphating bath material commonly used acid-resistant stainless steel to prevent rust nozzle can use stainless steel or nylon production.
The certain impacts are the small-angle nozzle plume flow (jet) for the best; fan nozzle for cleaning, degreasing, cooling conical nozzle suitable for bleaching cream, the surface layer, phosphide, humidification , dust, etc.; should be installed in the reservoir paint cylinder, tank Venturi mixing nozzle, the "H" type, ie mixing nozzle (also known as venturi nozzle), for example, is sucked into the bath after a certain pressure with the lead crossing the liquid common to 1:4 traffic mix after diffusion ejected achieve solute mixing effect of the air, thereby preventing the precipitation, because agitation to ensure the uniform mixing of chemical solution.
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