Research On Key Technologies Of Automatic Production Line For Titanium-based Coated Electrodes

The titanium-based coating electrode is the key to electrolytic water treatment,and the common method for preparing the coating electrode is the thermal decomposition method,and the noble metal solution is coated on the surface of the substrate by manual,and then the coating is formed through high-temperature oxidation.In this paper,a full-automatic coating system and a drying system are designed for the production process of the coating electrode,which lays the foundation for the design of the following production line and the realization of the automatic production of the electrode.(1)The overall scheme design of coated electrode automatic production line.The production process of titanium-based coated electrodes was described,and the overall plan design of the production line was completed in combination with the process requirements of solution coating,drying and other key steps in the electrode production process.By comparing the three coating methods of spraying,roller coating and brush coating,the article finally selected the most economical and feasible brushing method,and determined the coating scheme for the linear motion unit to drive the brush to configure the substrate surface coating;By comparing several common drying methods,the drying scheme of tunnel hot air circulation was determined.(2)Design of coating system and optimization of coating quality.The structure design of the coating prototype is completed by Solid Works,and the action of the prototype is realized by PLC control method.In order to solve the problem of uneven coating in the trial operation of the prototype,the flow field in the brush was simulated by FLUENT,the influence of brush structure on the wetting uniformity of brush was studied,and the structure optimization was completed.The corresponding coating experiments are designed to verify the simulation results.After optimization,the color difference of the coating surface does not exceed 0.38 NBS,and the coating quality meets the requirements.(3)Design of the drying system.Based on the moisture content of the electrode to be dried,the required wind speed,tunnel length and wet material running speed are calculated.The FLUENT software is used to simulate the flow field in the tunnel through the finite volume method,and the corresponding orthogonal experiments are designed to determine other key points of the drying prototype.Dimensions and complete the structural design of the drying equipment.