Microwave flaking/rust

[Bsmith]

Inside the microwave oven, on the top/cealing the coating is flaking off and rust appearing, anything I can coat it with after cleaning or is it a case of a new microwave?

 

[Onthespotwelding]

This thread might help.

Rusty Subrames, best option?.

How would people tackle this short term?. We are taking all the loose rust off back to sound metal (not pristine though?). What's best next stage?. I have 2 part epox primer (brush on) or would a metal coating be better (something Bilt Hamber or similar). Eventually the entire sub frame will...

www.mig-welding.co.uk

See @qwakers post no7 in that thread…..

Or just buy a new microwave?

 

[Robert Weaver]

The internal surfaces act as reflectors, keeping the microwave energy within the oven. So long as the corroded surface still has a thickness of decent metal and not holed by rust, you should be good. Clean it back to metal, and enamel paint should be good. If you can, disassemble to get at the other side of the corrosion and do the same.

 

[Seadog]

I'd make sure that you remove all of the rust. Microwaves are a bit like black magic. It's not inconceivable that you could get arcing within the rust patch, if it's very flakey.

 

[Bsmith]

The internal surfaces act as reflectors, keeping the microwave energy within the oven. So long as the corroded surface still has a thickness of decent metal and not holed by rust, you should be good. Clean it back to metal, and enamel paint should be good. If you can, disassemble to get at the other side of the corrosion and do the same.

Yea, would need to be some kinda hard coating that wouldn't go soft or melt with the heat, I was wondering about stove paint?

 

[Bsmith]

I'd make sure that you remove all of the rust. Microwaves are a bit like black magic. It's not inconceivable that you could get arcing within the rust patch, if it's very flakey.

I don't know why it hasn't been arcing, maybe the rust is acting like it does when we attach our welding return clamps to rusty metal, just won't work.

 

[Bsmith]

I still heated my dinner with it earlier today.
A good working 800w microwave, but alas, time for a new one.

 

[mark roberts]

Did you know microwaves were first used to defrost hamsters during cryogenic experiments.

 

[winchman]

I try to buy them with stainless insides, last time I remember it being more difficult to find stainless

 

[colnerov]

Did you know microwaves were first used to defrost hamsters during cryogenic experiments.

Yes. James Lovelock, but it doesn't scale up to larger animals.

See Tom Scott on Youtube.

 

[Bobupndown]

I still heated my dinner with it earlier today.
A good working 800w microwave, but alas, time for a new one.


View attachment 466469View attachment 466470

Is nobody going to suggest welding in a new roof?

 

[Erie Fred]

I'd make sure that you remove all of the rust. Microwaves are a bit like black magic. It's not inconceivable that you could get arcing within the rust patch, if it's very flakey.

That's the self cleaning cycle.....

 

[Bsmith]

Is nobody going to suggest welding in a new roof?

Would still need some sort of coating.

 

[Onoff]

Would still need some sort of coating.

Tinned chilli is good as are baked beans, soup etc if you forget to stir halfway through.

 

[Onoff]

A good working 800w microwave, but alas, time for a new one.

Heads up lads, transformer available!

 

[Bsmith]

Tinned chilli is good as are baked beans, soup etc if you forget to stir halfway through.

I once heated a cup of butter and milk to pour over the potatoes, spuds wern't ready so it was left for some time, maybe 20 mins, cup had gone cold and the butter had formed a seal over the milk, set microwave for a minute and boom! Cleaning in progress.

 

[colnerov]

I once heated a cup of butter and milk to pour over the potatoes, spuds wern't ready so it was left for some time, maybe 20 mins, cup had gone cold and the butter had formed a seal over the milk, set microwave for a minute and boom! Cleaning in progress.

It's a good job they only work with the door shut...

 

[Ed.]

Bsmith: If your microwave is in such poor condition it is time for a new one, some of the chain stores such as K'Mart (Australia) sell them for AU$52+, not worth the time or effort to redo the roof. I am sure that in the UK there will be similar prices.