Hard Coating
Hard Coating
(OP)
"Can anyone help to identify a coating or process on 304 spec stainless steel?
This is a suface hardening which is on the 3 of wearing sides of a pair of vanes bolted to spinning disc (720rpm) spreading abrasive/corrosive fertiliser.
Finish appears to be similar to that of galvanised sheet and may possibly be brushed/sprayed.Thickness is minimul but extremely hard.No extreme heat has been used.
This is a suface hardening which is on the 3 of wearing sides of a pair of vanes bolted to spinning disc (720rpm) spreading abrasive/corrosive fertiliser.
Finish appears to be similar to that of galvanised sheet and may possibly be brushed/sprayed.Thickness is minimul but extremely hard.No extreme heat has been used.





RE: Hard Coating
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Hard Coating
Also I have looked at one or two flame sprays including tungsten carbide and the finish does not look like this one.As i said this finish looks very similar to galvanise and there is slight suface rippling and it has this embedded fibre charactoristic look just like fibre glass.Which I presume is a surface reaction.
The flame sprays seem to be a mutch more even coating.
The edges are also coated and it has left a 1-2mm border all the way around the masked or untreated area.
Once again thank you for your help and if you have any more thoughts they would be welcome.
Rgds
Tim Smith
RE: Hard Coating
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Hard Coating