Main issues |
Causes |
Solution |
Pinhole,frost |
Too thick film |
1, Contact powder factory.
2, Reduce film thickness. |
Unqualified clearing or bottom material |
1, Check oil removing, rust removing, fat removing.
2, Bottom material preheating.
3, Check bottom material pollution.
4, Contact powder factory. |
Too high stove temperature,too fast powder solidifying |
1, Check and reduce the stove temperature
2, Check with powder factory to change prescription. |
New equipment or new part pollution |
Check it whether have silicon oil or crylic acid |
Gas pollution |
Check oil-water separation and desiccation system |
Powder pollution（incompatibility,including silicon oil or crylic acid） |
1, Contact powder factory.
2, Replace spraying equipment or new powder. |
Outside pollution |
1, Check it whether have painting spraying line.
2, Heat system dust.
3, Catenary lube and salver. |
Powder quality |
Contact powder factory. |
Wrinkle |
Too thick film |
1, Contact powder factory.
2, Reduce film thickness. |
Electric shock |
Check earth, voltage. |
Powder out of date |
1, Chenk the storage environment.
2, Change new powder. |
Rough surface of bottom material |
1, Thickness adding.
2, Using conduction sealing compound.
3, Choose other powder. |
Too thin film |
1, Contact powder factory.
2, Increase film thickness. |
Powder prescription issues |
1,Contact powder factory. |
Fluidization,bad powder supplying |
1, Adjust fluidization.
2, Contact powder factory. |
Too high stove temperature,Too fast powder solidifying |
1, Check and reduce stove temperature.
2, Contact powder factory. |
Uneven thickness |
Bad fluidization |
1, Check fluidization air pressure.
2, Check fluidization panel,and make fluidization even.
3, Contact powder factory. |
Uneven spraying |
1, Check and adjust fluidization.
2, Check powder supplying system.
3, Check gun. |
Spraying can not cover part |
Adjust gun place, air pressure and gun distance |
Variance electrification |
Contact powder and equipment factory. |
Unstable line speed |
Adjust line speed |
Color change（yellow） |
Uneven thickness |
Refer to last form |
Overbaking |
1, Chenk stove temperature.
2, Reduce stove temperature or increase line speed.
3, Adjust stove temperature. |
Too much steam in stove |
Check fan |
Powder color difference of dofferent batch |
Contact powder factory. |
Powder yellow resisting |
Contact powder factory. |
Low luster |
Incompatible powder blended |
1, Cleaning.
2, Contact powder factory. |
Powder quality issues，low luster |
Check new powder,contact powder factory. |
Surface pinhole,frost |
Refer to last form |
Gloss losing by over baking |
1, Reduce stove temperature or increase line speed.
2, Adjust stove temperature. |
High luster |
Deficient solidifying |
1, Check solvent resistant.
2, Increase temperature or delaying. |
Powder quality issues，high luster |
Check new powder, contact powder factory. |
Molt（foam formation） |
Pre clearing or desiccation unqualified |
Check pre process |
Horizontal regulor wrinkle |
Too close of guns |
Adjust |
Powder overlapping between guns |
Adjust |
Pollution（non-powder ） |
Pollution of operators |
Check and clear |
Air pollution in stove |
Check and clear |
Air pollution in factory |
Check and clear |
Chain pollution |
Check and clear |
Powder pollution |
Raclaiming or spraying system pollution |
Check and clear, change new powder |
New powder pollution |
1, Contact powder factory.
2, Check new powder.
3, Clear and change new powder. |
Dreg grain |
Too thin spraying |
Refer to last form |
Bottom material issues |
Check and clear |
Powder issues |
Contact powder factory. |
