In the production process of wooden doors, if painting is applied by spraying, it is inevitable that some unavoidable technical defects will be encountered, and what are the causes of these technical defects? What are the corresponding treatment methods?
Hanging
Treatment methods: (1) control spray pressure; (2) distance control at 15-25 cm; (3) adjust spray speed to maintain balance with paint; (4) control spray volume; (5) maintain vertical spray; ) increase the ambient temperature; (7) select the appropriate nozzle and pressure to control the amount of paint
2. Bubble
Treatment methods: (1) check and repair the filtration system; (2) control the amount of spray; (3) control the spray pressure and distance; (4) add a moderate amount of volatile flux
3. Whitening
Treatment method: (1) check the oil-water separator; (2) control the relative humidity in the spray booth; (3) control the wind speed at 50-80 cm/s; (4) control the low-boiling solvent addition amount
4. Orange peel
Treatment methods: (1) increase the spraying pressure; (2) control the spraying distance; (3) adjust the viscosity of the coating; (4) increase the spraying temperature, improve the leveling; (5) correctly grasp the spraying speed; (6) replace the nozzle (7) Select the appropriate spray gun according to the performance of the paint
5. Granules
Treatment method: (1) control the speed of the spray gun, preferably 30-50 cm / s; (2) adjust the spray pressure; (3) correctly spray according to the operating procedures; (4) increase the spray volume; (5) check and repair the filter system (6) Thoroughly clean and dedust the surface of the substrate before spraying; (7) Thoroughly clean the spraying equipment after spraying. [ Follow the WeChat public number "Jiuzhengmen window network: jiuzhengmenchuang"; pay attention to courtesy, scan code to send millions of business opportunities! Jiuzhengmen window network exchange group ]
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