- Thread starter Onoff
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Onoff
In the land of the unfinished project I am King!
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Will have a look in the daylight.
Ref heating, I had the mad thought to site a blue plastic barrel in the corner of an insulated COMPOST HEAP.
Onoff
In the land of the unfinished project I am King!
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- 11,648
- Location
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Onoff
In the land of the unfinished project I am King!
- Messages
- 11,648
- Location
- Sevenoaks, UK
That really worked well!
The caliper was interesting. I took it out of the bath along with the cross member and trailing arm and jet washed the lot. Wire brushed some of the more stubborn rusty areas too.
Took the caliper only indoors and washed it in the sink under hot water with a drop of Fairy whilst I freed the sliders off. It flash rusted so quickly afterwards. This is it flash rusted. 5 mins before it was clean steel.
All back in the bath now.
I wonder what a cross member would have weighed originally to calculate the material %age lost?
The caliper was interesting. I took it out of the bath along with the cross member and trailing arm and jet washed the lot. Wire brushed some of the more stubborn rusty areas too.
Took the caliper only indoors and washed it in the sink under hot water with a drop of Fairy whilst I freed the sliders off. It flash rusted so quickly afterwards. This is it flash rusted. 5 mins before it was clean steel.
All back in the bath now.
I wonder what a cross member would have weighed originally to calculate the material %age lost?
Onoff
In the land of the unfinished project I am King!
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- 11,648
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Cast aren't they, calipers?
ronan
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Yeah i think so.
Onoff
In the land of the unfinished project I am King!
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- 11,648
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What's that in there citric acid?
I didn't think it was too kind to zinc as in the barrow tub coating?
Assuming Deox-C is citric acid it says not to immerse anything zinc in it:
owas
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Tis ok, I have a few painted ones too, I was just curious to see what it did to the zinc
Onoff
In the land of the unfinished project I am King!
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For a small, one pot citric acid bath I'm thinking to take the top off a stainless steel kettle (good but for a broken lid). I can strap a cylinder stat to the side to hold it at 70degC without the kettle's own bi-metallic strip coming in and switching it off.
Got a rusty MK4 Golf, rear wiper assembly as it's first patient!
Got a rusty MK4 Golf, rear wiper assembly as it's first patient!
rtcosic
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The citric acid molecule chemically combines with the iron oxide so the solution will become 'exhausted'.
I tend to cascade the solution. The new mix is used for light derusting - eg the flash rust on cast iron as mentioned above, or an electrolytically cleaned item to catch odd patches hiding in inaccessible corners or closed sections.
After the solution starts to change colour it gets used for the 'first pass' of a mechanically cleaned item, or a first stage chemical clean before going into the first stage bath.
Finally the filthy green snot gets used for really rusty non-automotive stuff that doesn't really need cleaning but will get cleaned just because I can.
I don't keep adding citric acid crystals to the filthy green snot.
I tend to cascade the solution. The new mix is used for light derusting - eg the flash rust on cast iron as mentioned above, or an electrolytically cleaned item to catch odd patches hiding in inaccessible corners or closed sections.
After the solution starts to change colour it gets used for the 'first pass' of a mechanically cleaned item, or a first stage chemical clean before going into the first stage bath.
Finally the filthy green snot gets used for really rusty non-automotive stuff that doesn't really need cleaning but will get cleaned just because I can.
I don't keep adding citric acid crystals to the filthy green snot.
Ok so I've got some lengths of steel to deriust using hot citric acid , now today I've bought some 110mm waste pipe and fittings as per photo and intend to assemble 3kw immersion element , just ordered a lock nut/flange for the element .
Obviously the pipe will have a screw cap on one end and be inclined so as to contain the water /citric mix and steel
Inbuilt thermostat set at whatever say 50, degrees or whatever's optimum ,
Will be on a 16 amp plug and rcd and will seal up the element cover with silicone sealant to stop any rain ingress
Anyone see any problems ??
Cheers mike
Pic on next post
Obviously the pipe will have a screw cap on one end and be inclined so as to contain the water /citric mix and steel
Inbuilt thermostat set at whatever say 50, degrees or whatever's optimum ,
Will be on a 16 amp plug and rcd and will seal up the element cover with silicone sealant to stop any rain ingress
Anyone see any problems ??
Cheers mike
Pic on next post
There won't be any leaks !there will be about 2.5 metres of pipe fitted to that tee , may even increase to 6" dia on the end so can accommodate larger bits of cource the end cap with element fitted to it will unscrew so could be fitted to a square or rectangular tank for bigger bits .ive some shed doors to make so will cut the steel to size de rust then weld up....
