How to stop corrosion on Aliminuim tools

[brightspark]

delivered no need to go out!

was all ready there

 

[Onoff]

Just ordered a can for work. Means I can spray the component going off on the back of a flat bed truck for repair and just not worry about rust on the cleaned faces.

 

[eccles291]

I'm not a fan of the spray cans, not only are they expensive, but had the propellent fail in the past with plenty still left in it.

You can recharge them with a compressor.

 

[Screwdriver]

You can recharge them with a compressor.

Unbelievably dangerous. Most propellants rely on an extremely benevolent liquid/gas transition like butane. Ultra low vapour pressure.

Those aerosol cans are not rated for the sorts of pressures you'd need for an appreciable air fill, It's why you shouldn't throw them on a bonfire (and why we all do!). Not only can the can explode (air is really very springy), the ball valve in the release mechanism can fire out like a bullet.

Seriously, you'd be better off refilling it with LPG/propane/ butane or somesuch and that's bad enough as a hobby.

 

[Gragson]

You can recharge them with a compressor.

To be honest re the OP or WD40, hand pump sprayer is cheaper, less hassle and safer

 

[brightspark]

if theres stacks in and no pressure just poke it open and refill an empty kitchen spray bottle. i just buy wd 40 by the gallon and use a hand spray

 

[eccles291]

Unbelievably dangerous. Most propellants rely on an extremely benevolent liquid/gas transition like butane. Ultra low vapour pressure.

Those aerosol cans are not rated for the sorts of pressures you'd need for an appreciable air fill, It's why you shouldn't throw them on a bonfire (and why we all do!). Not only can the can explode (air is really very springy), the ball valve in the release mechanism can fire out like a bullet.

Seriously, you'd be better off refilling it with LPG/propane/ butane or somesuch and that's bad enough as a hobby.

Never done it meself, and probably wouldn't, but just saying I'd seen it done.

 

[voipio]

Aerosol can testing is performed in the US at 140PSI for "non-specification" (N2P) cans, up to 160PSI for DOT-2P, and up to 180PSI for DOT-2Q rated cans. Burst pressures are considerably higher (210, 240, and 270PSI, respectively).

In the EU, cans are of three types: 12, 15, 18 Bar, with test pressures up to 116, 145, and 174PSI, respectively, and burst pressures of 209, 261 and 313PSI, respectively.

See e.g: https://southernaerosol.com/Power Point/Fall 2012/SATA Fall 2012 Meeting/John Blum.pdf

Even the lowest rated cans should easily withstand 90PSI. The problem with using air, is that an oxidant is being mixed with flammable liquids. Nitrogen would be a better pressurising gas.

 

[RichardM]

if theres stacks in and no pressure just poke it open and refill an empty kitchen spray bottle. i just buy wd 40 by the gallon and use a hand spray

I just make a hole in the can too, drain it onto a squeezy bottle and use it like that.