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The spraying process of automotive paint is generally divided into several processes: primer, intermediate coating, topcoat, and varnish. During the spraying process, it is inevitable to encounter one or more problems. Changzhou Wante Coatings has compiled ten common problems and solutions for automotive paint.

Common problem 1: Orange peel on the paint surface

Reason for composition:

1. Incorrect spraying pressure, viscosity, spraying method or construction temperature,

2. Improper use of curing agents and diluents;

3. Insufficient polishing of the substrate;

4. The car paint is not well mixed

Solution:

1. Strictly adjust the spray gun pressure according to technical data, use the correct spraying method and construction temperature, and avoid construction at very high or very low temperatures;

2. The curing agent and diluent are proportioned according to the correct ratio;

3. Correct polishing of the substrate;

4. Mix the paint thoroughly before use

Common problem 2: Solvent bubbles (prickly heat, hot prickly heat)

Reason for composition:

1. The paint film is sprayed too thick

2. Improper use of curing agents and diluents leads to rapid drying

Solution:

1. Correct use of spray gun and spray viscosity

2. Use appropriate curing agents and diluents to avoid appearing too dry and fast

Common problem three: pinholes

Reason for composition:

1. The substrate is made of glass fiber, which easily forms pinholes;

2. Insufficient mixing and priming of atomic ash;

3. There are solvent bubbles on the surface after polishing

Solution:

1. Mix all atomic ashes and fill with enough atomic ashes

2. Do not polish solvent bubbles

3. Remove all the problematic paint film thoroughly

4. Remove the problematic paint surface, polish it from the beginning, apply atomic ash, and then spray the topcoat from the beginning

Common Question 4: Color Deviation

Reason for composition:

1. Insufficient mixing of paint before application

2. Incorrect spraying method, uneven spraying thickness

3. Inaccurate color matching

Solution:

1. Mix thoroughly and evenly before opening the tank for use

2. Apply the correct spraying method and dilution ratio to achieve uniform spraying

3. Accurate color matching

FAQ 5: Blistering

Reason for composition:

1. Mainly due to insufficient drying or cleaning of the substrate before spraying, which contains moisture and oil stains

Solution:

1. All materials must be properly dried before construction;

2. Fully clean the substrate

Article source: Qingyuan Automotive Repair Painthttp://www.jinliangxincai.com