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Powder coating Solutions to faq

Your current location: index >> News >> Common problem

Powder coating Solutions to faq

Release date:2017-08-10 Author:powdercoating.com Click:

Powder coating


SOLUTIONS TO FAQ

PROBLEMS

REASONS

SOLUTIONS

Adsorption weak

Hanger

Adjust the way of hanging

Electrostatic

Adjust voltage to appropriate

Ground connection

Check and make sure ground connection well

Gushing /spitting

Transferring or pressure of atomization is flat

Adjust transferring or pressure of atomization

Duct is jam

Clean the duct in time

Quick-wear parts of the pump got excessive wear

Replace components in time

Dropping

Transferring or pressure of atomization is flat

Adjust transferring or pressure of atomization

Fluidization abnormal

Adjust the fluidization airflow

Nozzle jam

Adhere to the nozzle and turned harden

Clean the nozzle in time

Air pressure of powder conveying too low

Pressure boost

Pinhole

Substrate not clean or the casting has a blow hole

Thoroughly cleaning and polish

The spray gun got overtension,give rise to the film breakdown

Farther distance between the gun and workpiece

Shrinkage cavity

Outside contaminations,(new equipment or new not cleaning,containing silicone)

Make sure the workplace cleaning and workpieces unoiled

Outside contaminations,(hanger line lubricating oil dropping)

Grain

Film too thin

Increase thickness of the film

Substrate's problem

Adjust the substrate

Chromatic aberration

Film thickness nonuniform

Make film thickness uniform

Oven temperature is too high,excessive baking

Lower the temperature or improve the chain speed

Bubbles

Substrate's problem

Notice the texture of substrate,do better prepare and increase the pre-baking temperature

Gloss problem

Low gloss

Avoid the contamination or lower temperature

High gloss

Improve the curing temperature

Adhesive force Impact  Hardness    Film fall off

Curing insufficient

Test temperature

Confirm twice baking

Improve the temperature or baking longer

Substrate cleaning below standard

Test the unoil,rust removal and degrease 


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