In the process of distribution box shell processing, avoiding surface color difference problems is an important quality control link. The following are some key measures that can help reduce or avoid surface color difference: 1. Raw material selection and inspection ① Select high-quality raw materials: Ensure that the selected distribution box shell materials (such as stainless steel, aluminum alloy, etc.) have stable quality and uniform color. Select raw materials from reliable suppliers to reduce color difference caused by raw material quality problems. ② Strict inspection of raw materials: Distribution box shell processing conducts strict inspection before raw materials are put into storage, including color, gloss, uniformity and other indicators to ensure that raw materials meet processing requirements. Second, surface treatment process control ① Standardize the surface treatment process: formulate a detailed surface treatment process, including cleaning, degreasing, rust removal, phosphating, spraying and other steps, to ensure that each step is operated in accordance with the specifications. ② Control the spraying environment: The spraying environment has a great impact on the surface color. It should be ensured that the temperature, humidity, cleanliness and other conditions of the spraying workshop meet the requirements to reduce the impact of environmental factors on the spraying effect. ③ Select the appropriate paint and thinner: Distribution box shell processing According to the material and requirements of the distribution box shell, select the appropriate paint and thinner. Different paint and thinner combinations may affect the color, gloss and adhesion of the coating. ④ Uniform spraying: Appropriate spraying equipment and process parameters are used to ensure that the paint is evenly distributed on the surface of the distribution box shell. Avoid spraying too thick or too thin, as well as the color difference caused by uneven spraying. III. Color difference detection and adjustment ① Establish color difference detection standards: Develop clear color difference detection standards and methods, such as using a color difference meter for testing. Ensure the accuracy and reliability of the test results. ② Regular detection and adjustment: Distribution box shell processing regularly detects the color of the distribution box shell during the production process, and timely finds and adjusts the color difference problem. By adjusting the paint formula, spraying process parameters, etc., the color is consistent. IV. Quality management and control ① Strengthen quality awareness training: Conduct quality awareness training for production personnel, so that they fully realize the importance of avoiding color difference problems. Improve the operation skills and quality awareness of production personnel. ② Establish a quality management system: Establish a sound quality management system, including raw material inspection, production process control, finished product inspection and other links. Through systematic management, ensure that product quality is stable and reliable. V. Other precautions ① Avoid mixing different batches of raw materials: There may be color differences between different batches of raw materials. In the production process, try to avoid mixing different batches of raw materials to reduce the occurrence of color difference problems. ② Pay attention to storage conditions: The storage environment also has a certain impact on the color of raw materials and finished products. It should be ensured that the storage environment is dry, ventilated, protected from light and other conditions meet the requirements to reduce the color difference problems caused by improper storage.