8 common problems of paint and emergency treatment measures
Common problems and measures for emergency treatment of 1, coating construction of vertical flow:
In the vertical surface coating, coating the downward flow is, the convexity of the phenomenon, the coating effect.
Cause: a painting too thick or rinse paint spray gun and gas concentration is too high, too big, too much paint, coating nozzle from special too close.
Processing method: when the viscosity of diluted gas, adjusting the spray gun, pressure 3.5-4.5kg/m2, pressure appropriately and volume, distance suitability (15cm-20cm).
Common problems and measures for emergency treatment of 2, paint brush marks:
After coating, coating strip uneven phenomenon.
Cause: construction, high viscosity, wet film coating.
Treatment methods: coating to appropriate viscosity, coating, film basic dry, brush force should not be too large.
Pinhole common problems and measures for emergency treatment of 3, coating construction:
Film after drying, coating surface appear small holes, the hole from the substrate to the surface phenomenon.
Cause: the coating spraying is too thick, the drying temperature is too high, the coated with moisture, dust, paint etc..
Processing method: a spraying thickness shall not be too thick, control the drying temperature appropriate, keep the coated non dust etc..
Common problems and measures for emergency treatment of 4, coating construction of dry jet phenomenon:
Paint spraying the atomized paint is not to be coated previously been drying part, coating surface roughness formation reattachment when.
Cause: the paint spray gun and to be coated the distance is too far, resulting in too high pressure spray gun.
Processing method: adjust the spray gun and the coated distance, about 15cm-20cm, the pressure is adjusted to 3.5-4.5kg/m2.
Albino common problems and measures for emergency treatment of 5, coating construction:
Film surface pale, no expected luster.
Cause: the humidity is too high (above 80%), thinner Han hair too fast, the coated cold.
Treatment methods: coating humidity should be more than 80%, anti Whitewater or additive 5-10%, be used dry diluent, the coated not too cold.
Stripping the common problems and measures for emergency treatment of 6, paint off:
The film coated surfaces were dropped from the.
Cause: the wax, oil, water and other substrates, coated and coated substrates wet, too smooth, or the use of inferior wall has powder putty, adhesion is not enough.
Methods: the substrate completely clean, make sure no wax, oil, water and other debris, has powder old wall must be rooted out; with the oily group of soil, soil or water batch batch flat, dry completely before coating.
Orange peel phenomenon common problems and measures for emergency treatment of 7, coating construction:
The film is not smooth, like orange peel uneven coating.
Cause: the diluent evaporates too quickly, spray pressure instability or excessive pressure, blowing with the distance is too far, a coating is too thick, the bottom paint besmear again.
Methods: using a diluent appropriate control spray gun, pressure, distance should be moderate, not a thick coating, completely dry and then coated with bottom.
Discoloration of the common problems and measures for emergency treatment of 8, coating construction:
The film a few days later, the color faded, color is not uniform.
Cause: the new is not completely dry, alkaline too heavy, causing color return.
Processing method: new wall should be one month after coating, epoxy primer on the bottom.