OT: Is this metal part powder coated?

Spud · Dec 2, 2020

Don't know what kind of metal it is.

Which method is used: powdercoating or electrostatic painting? This is a slicing plate for a food service equipment, so it is in direct contact with fruits, vegetables, potatoes etc..

DDoug · Dec 2, 2020

Spud said:
Don't know what kind of metal it is.

Which method is used: powdercoating or electrostatic painting? This is a slicing plate for a food service equipment, so it is in direct contact with fruits, vegetables, potatoes etc..

What makes you think it wasn't sprayed or dipped ?

Scottl · Dec 2, 2020

Rather than try to guess what was used, find a coating that is available,

This link was just one of many when I typed Food Safe Coating For Metal into a search engine.

Food Safe Paint for Metal Nontoxic Protective Metal Paint for Food Contact (External Not Food Grade Not for Direct Food Contact) | Steel-It(R)

Spud · Dec 2, 2020

digger doug said:
What makes you think it wasn't sprayed or dipped ?

Could be I suppose, I just assumed powder coating would give superior coverage and adhesion for the paint and this being a food quipment part my hunch was it is powdercoated.

I am pretty sure it is aluminum.

Milland · Dec 2, 2020

That second picture has what looks like a slicing blade, but it's not? If the part is aluminum then it's unlikely, it's just a guide into the cutting area?

Whatever. The choice of coating was incorrect for service, and maybe prep before coating too, as adhesion looks bad. If it was my project to repair, I'd be looking for a food contact safe powdercoat, if such a thing exists, but also try to find surface cleaning and metal prep methods to ensure best life for the PC.

Strostkovy · Dec 2, 2020

I've never seen powder coat look like that, but maybe.

But I worked at a powder coating shop and a customer making trimming equipment had a hell of a time finding and ordering food grade powder. This was also just for guards and cases where food contact was incidental.

I believe they will only sell to a certified powder coating shop, with strict prep requirements. I've powder coated rusty metal with no prep and got better adhesion than what your picture shows.

To test it warm a flake with a heat gun and see what it does. Polyester powders will remelt, paint will burn.

dalmatiangirl61 · Dec 2, 2020

Being food equipment, my guess would be some type of teflon coating?

Spud · Dec 2, 2020

Milland said:
That second picture has what looks like a slicing blade, but it's not? If the part is aluminum then it's unlikely, it's just a guide into the cutting area?

Whatever. The choice of coating was incorrect for service, and maybe prep before coating too, as adhesion looks bad. If it was my project to repair, I'd be looking for a food contact safe powdercoat, if such a thing exists, but also try to find surface cleaning and metal prep methods to ensure best life for the PC.

It is a plate that holds a slicing blade. I removed the blade, the blade goes on the otherside (3rd picture). Made in Sweden for Hobart. I talked to the parts guy at Hobart Food Equip, and he was surprised there was a coating, said it should be bare metal. Said maybe they used to paint the plates in the past but the new ones are unpainted.

Below you see the same plate sold by some sellers on Ebay and they look to be bare metal
NEW HOBART 3 FOOD PROCESSOR SLICING PLATE, HALLDE BERKEL SWEDEN | eBay

And here is a picture of an identical plate I grabbed of the web.
Hobart FP150 Continuous Feed Food Processor With 15PLTSS-6PACK Plate Kit – Restaurant Equipment - Charlotte & Gastonia, NC | Your Equipment Guys

Spud · Dec 2, 2020

Strostkovy said:
I've never seen powder coat look like that, but maybe.

But I worked at a powder coating shop and a customer making trimming equipment had a hell of a time finding and ordering food grade powder. This was also just for guards and cases where food contact was incidental.

I believe they will only sell to a certified powder coating shop, with strict prep requirements. I've powder coated rusty metal with no prep and got better adhesion than what your picture shows.

To test it warm a flake with a heat gun and see what it does. Polyester powders will remelt, paint will burn.

I don't know for sure it is powder coating, it was just a guess as it looks like paint. It may not even be paint.

Strostkovy · Dec 2, 2020

Spud said:
I don't know for sure it is powder coating, it was just a guess as it looks like paint. It may not even be paint.

I was just chiming in that I don't think it's powder coating and listing the reasons.

Are you hoping to refinish this and put it back into service?

dalmatiangirl61 · Dec 2, 2020

Spud said:
It is a plate that holds a slicing blade. I removed the blade, the blade goes on the backside . Made in Sweden for Hobart. I talked to the Parts guy at Hobart Food Equip, and he was surprised there was a coating, said it should be bare metal. Said maybe they used to paint the plates in the past but the new ones are unpainted.

Below you see the same plate sold by some sellers on Ebay and they look to be bare metal
NEW HOBART 3 FOOD PROCESSOR SLICING PLATE, HALLDE BERKEL SWEDEN | eBay

And here is a picture of an identical plate I grabbed of the web. This one also looks unpainted / coated.
Hobart FP150 Continuous Feed Food Processor With 15PLTSS-6PACK Plate Kit – Restaurant Equipment - Charlotte & Gastonia, NC | Your Equipment Guys

In that case, it looks like someone did a rattlecan rebuild.

AARONT · Dec 2, 2020

It doesn't look like powdercoat to me. I haven't seen any powdercoat that flakes off like that.

johfoster · Dec 2, 2020

The way it is flaking off could it be poorly done plating? (no expert here just curious, and have seen plated food equipment before) I would just buy a replacement new one if it is available, by the looks of how corroded that one is. Or send that one out for vapor blasting and see how clean of a finish you can get it back to bare metal, since that is what it seems it should be now anyway.

Milland · Dec 2, 2020

I think the best fix here is whip out the checkbook and buy a new, uncoated part. I don't feel very good about the debris that went into food products from the OP's pictures...

Pathogen · Dec 2, 2020

Contact the Wisconsin Department of Agriculture and ask to speak to a food inspector. Tell them what you have. They may want a picture.

You don't have to be an organ donor to save a life.

Spud · Dec 2, 2020

dalmatiangirl61 said:
In that case, it looks like someone did a rattlecan rebuild.

I highly doubt this was a non OEM rebuild as the coating looks too good on most of the part and this equipment came out of a major nationwide grocery chain. I am planning to get it media blasted to bare metal, since the new part is supposed to be bare metal.

BT Fabrication · Dec 3, 2020

that is definitely electroplating in nickel/zinc. aka a cheap way to cover cast aluminum that doesn't do well with food acids.

Spud · Dec 4, 2020

BT Fabrication said:
that is definitely electroplating in nickel/zinc. aka a cheap way to cover cast aluminum that doesn't do well with food acids.

Just got email back from Swedish manufactuer, and you are right on the money. It is nickel electrolyte plated die cast aluminium. They stopped making the part this way in 2012. Now all the parts are stainless steel.

Milland · Dec 4, 2020

Spud said:
Just got email back from Swedish manufactuer, and you are right on the money. It is nickel electrolyte plated die cast aluminium. They stopped making the part this way in 2012. Now all the parts are stainless steel.

What's your customer going to do? I think a number here believe that returning this part to service, even with the coating removed, is not ideal. If the food is attacking a nickel coating, then bare Al won't hold up either...

Spud · Dec 4, 2020

Milland said:
What's your customer going to do? I think a number here believe that returning this part to service, even with the coating removed, is not ideal. If the food is attacking a nickel coating, then bare Al won't hold up either...

This is my personal machine. Won't be sending it in for service. Will just get the new SS replacement.

This link says no threat in using aluminum cookware.
Is Aluminum Cookware Safe? | Cook'''s Illustrated

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