Coating explodes.

[omcblacksmith]

Im coating thermowells with sf1m 1/8" per side on 304hss,spray and fuse using standard J3 Wallcomony gun.Been doing for 30 years.Any ideas

[Gordon]

Hi Omcblacksmith

to the Surface Engineering Forum.

If you have been doing this successfully previously, something has obviously changed, maybe powder or process procedure. Try a different or fresh batch of powder or ideally a batch you have used before without problems, possibly a contamination problem or bad batch.

[omcblacksmith]

Hi Omcblacksmith

to the Surface Engineering Forum.

If you have been doing this successfully previously, something has obviously changed, maybe powder or process procedure. Try a different or fresh batch of powder or ideally a batch you have used before without problems, possibly a contamination problem or bad batch.

Thanks Gordon.Thats what it was bad powder.