Coating knowledge: analysis and solution of powder coating problems

Core tips: Causes and solutions for poor powder fluidization during spraying 1) insufficient compressed air pressure, check the supply of compressed air, clean the air filtration equipment, and increase the pressure appropriately 2) If the microporous plate is blocked, check whether the microporous plate is blocked by oil and impurities in ultrafine powder or compressed air 3) The powder is stored in the powder supply barrel for a long time to absorb moisture You can try to increase the air pressure for a long time to vulcanize the powder and take away the moisture If necessary, use a clean instrument to help stir it 4) The powder agglomerates and can be sifted manually 5) Too much powder in the vulcanization bed can reduce the amount of powder in the bed The amount of powder is generally added to sulfur Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Coating home news: Causes and solutions for poor powder fluidization during spraying 1) insufficient compressed air pressure, check the supply of compressed air, clean the air filtration equipment, and increase the pressure appropriately 2) If the microporous plate is blocked, check whether the microporous plate is blocked by oil and impurities in ultrafine powder or compressed air 3) The powder is stored in the powder supply barrel for a long time to absorb moisture You can try to increase the air pressure for a long time to vulcanize the powder and take away the moisture If necessary, use a clean instrument to help stir it 4) The powder agglomerates and can be sifted manually 5) Too much powder in the curing bed can reduce the amount of powder in the bed The amount of powder is generally added to two-thirds of the volume of the curing bed The reasons and solutions for the poor surface hardness of the powder coating after curing 1) insufficient curing, the baking temperature can be increased to meet the process requirements or the baking time of the workpiece can be extended to meet the process requirements 2) Over curing, coating embrittlement will also reduce the hardness, can appropriately reduce the baking temperature, shorten the baking time 3) The heating rate of baking is too slow In the process of slow melting flow, some leveling AIDS migrate to floating up, which can improve the heating rate to the surface of the coating 4) The powder supplier can be informed to improve the formula due to the quality problem of the powder itself The reasons and solutions for the discoloration of the coating film after curing 1) the baking time is too long, which can shorten the baking time 2) If the baking temperature is too high, the baking temperature can be reduced 3) Uneven coating thickness a) If the position or direction of the spray gun is not correct and affected by Faraday effect, the spray gun shall be checked and reset; b) if the vibrator of the automatic spray gun does not match the speed of the production line, the speed of the production line shall be adjusted or the stroke of the vibrator of the spray gun shall be adjusted; c) if the air flow in the powder spraying room affects the spraying range of the powder, the equipment supplier shall be contacted; d) In case of uneven powder discharge from the spray gun, the powder supply and spray gun system shall be checked to ensure uniform powder vulcanization and atomization; in case of unstable high pressure, the output voltage shall be checked 4) If the air in the oven is not clean, check the air heating system and exhaust 5) If there is any problem with the powder formula, contact the powder supplier [focus on WeChat official account "paint net"; pay attention to surprises, scan code to see if your husband is selling paint.. "Paint group: 92525666] coatings house is focused on coatings, diatom mud, paint and coatings, coating technology, fire retardant coatings news information and coatings, diatom mud, paint and coating, coating technology, fire retardant coatings decoration knowledge and decoration effect map.