How do technicians control the chromatic aberration problem in production?

1. Improve the control standard
for customers with very high color achance requirements (e.g. E≤0.4) or products with slight chroma but significant visual changes (e.g. light color with red or yellow), quality control standards must be raised and visual control must be strengthened. General product enterprises control the chromation aeration of ≤ E≤1, part of the color A≤0.5, and mostly under a single light source, it is easy to cause visual color difference is obvious. In order to strengthen control, it is necessary to require the uniform color difference of various light sources (e.g., E≤0.5), but also through testing, proofreading, audit personnel's visual inspection, to achieve a consistent qualified .
2. Increase raw material procurement batch
Even large-scale raw material manufacturers' products, especially pigments, are also prevalent in batches of interchromromic difference, some powder paint products are particularly sensitive to the color, on-site color palette personnel can not ensure that the color is consistent with the previous. Raw material suppliers suggest that powder manufacturers increase the amount of single batch procurement to ensure that the color of multi-batch products consistent, with a certain improvement effect, for some important customers, important control products, it is also necessary to take such measures.
3. Product inventory
coating customer orders are determined according to the batch processing of work parts, many customers order less in a single batch, to the production and quality control of powder coatings bring difficulties. For those who use the same product all year-year-old and can not single batch of over-order customers, powder coating manufacturers may wish to be on the basis of full demonstration, less batch mass production, do a good job of product inventory, coating customers also recommend and welcome this practice.
4. Strengthening technical services
the appearance of color difference generally to carry out after-sales technical services, and pre-sales technical services can be a good way to reduce the appearance of color difference problems. Slight fluctuations in color, customers can basically accept, but the continuous fluctuations or deviations continue to expand will cause strong customer complaints, regular visits, forward communication can quickly identify problems, timely correction. For those color difference is too large, customers refuse to use the product, to quickly change; When the customer supporting the use of coatings, molding color fluctuations, to communicate with customers in a timely manner, to avoid excessive customer offset according to standards (many customers will take paint, molding products to require the color of powder coatings); Timely visit can also keep absoly informed about customer information, the product to actively adjust to meet customer needs.
5. Reasonable construction of pigment library
the fundamental problem to solve the color difference is the complete range of pigment varieties, but the comprehensive establishment of pigment library requires a lot of manpower, material and financial resources, is a long-term and continuous process, but also can not guarantee full compliance with the business needs of enterprises, enterprises can not bear the risk of a small order for the whole packaging of new pigments may be stored for several years. The infinite number of pigments in color matching theory and the limited inventory in practice are indeed a great contradiction. Coordination method is to enrich pigment varieties, such as green pigments, to have yellow phase, blue phase, red to have orange and purple red and so on; Second, complete specifications, such as cheap, high-priced high-quality, domestic and foreign, lead-free, etc. Third, special goods, large sales, high profits or important customers, such as the need for pigments, actively sample spare; Fourth, the technical reserve, some special pigments (such as high price, excellent quality, special needs or new varieties), sampling, storage or trial.
Summary
color deployment and quality control is the most basic and important technical work in powder coating production, many enterprises are still using inefficient pure manual operation, some have begun to use the assistance of chromometers, and the main domestic powder coating manufacturers its color matching technology is only in the hands of a few key technical personnel, its production line quality inspection personnel also only use visual fine-tuning product color. However, with the continuous development of powder coating, many managers have gradually realized that color matching meters to bring high efficiency and quality assurance to enterprises, the use of color meters will gradually popularize, technical personnel only the instrument testing technology and visual evaluation, practical experience, such as a full combination, in order to really do a good job of color measurement and control of powder coating products.
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