Orange Peel Powder Coating Defect Pictures

Orange peel is when the surface of a coated product doesn t have an even smooth appearance to it after the coating is applied.

Orange peel powder coating defect pictures.

One of the most common causes for this is the quality of the powder coating you are applying mainly the particle size distribution as described by shane. These areas with too much powder will suffer from back ionization and from defects like orange peel. Rejects are the bane of any job shop s existence when applying powder coatings pulling apart out of the oven only to see whorls of orange peel powder sections where the coating has sagged or opacity issues bring a particular kind of dread alongside the question of what happened. Hi as described orange peel is in fact a surface defect.

Defined as an uneven texture of smooth finish products that resembles the skin of citrus fruit. Coating defects fault finding coating defects car straight out of the oven into a cooler room. Posted by on 22 september 2017. Rejects are the bane of any job shop s existence when applying powder coatings pulling a part out of the oven only to see disappointing orange peel spoiling the powder coated finish sections where the coating has sagged or opacity issues bring a sigh of frustration alongside the question of what happened.

This is when issues arise in the actual process of applying a powder coating to a substrate the result of which is then a reject. Powder coating defects pdf format powder coating. It is not considered a defect if it is not excessive. Excessive is in the eye of the beholder of course.

Moisture absorption forms the substrate especially from putties and fillers before painting. The level of orange peel is visually determined by comparing to industry standards typically the powder coating institute pci visual smoothness standards. When powder coating jobs go wrong. When powder coating jobs go wrong.

Whether your powder coating or liquid coating orange peel is usually not desirable because it creates a poor overall finish appearance when your all done coating your product. It may be barely noticeable or very obvious. 1 4 insufficient adhesion of powder coat to the parts possible causes solution oil water pretreatment and chemical residues check surface of work piece before coating and clean carefully too high film thickness and flowing of coating from the edges of work piece check system parameters reduce film thickness 1 5 orange peel. In order to ensure that a powder coating operation is producing the highest quality defect free finish however certain steps must be taken to incorporate basic contamination control techniques into the finishing.

One of the most common quality issues with powder coating is an orange peel effect. Good contamination control prevents defects from start to finish. Back ionization can form when your gun to part distance kvs and microamps aren t monitored closely enough. 13 05 2014 defects fault finding causes blistering is caused by moisture or contamination under the paint due to.

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