Fitting anti-flex plate question

[GSB]

thats rubbish, try telling that to the people on the Aloha 737 who died after corrosion ended up making there plane a convertable, all our planes at work are painted to protect them from corrosion forming, we chemically etch the metal first and then paint them to create a longer lasting finnish, a scratch in ally does not seal itself, it just starts off a chain reaction of corrosion

No its not... you're talking about someting slightly different. We're talking about corrosion of aluminium in air here. Alluminium does corrode in air, but the very nature of the metal means that the surface corrosion prevents anything deeper occuring. I suspect that a different method of corrosion took the roof off your plane, either corrosion by chemical attack, or by the electrical effects of the usual suspect of corrosion between dis-similar metals. (Galvanic Corrosion)

Different thing entirely. Aircraft are complex structures made up af several complex pressings riveted and bonded together in a manner that makes inspection and repair very difficult. They are designed to be as light as possible, and thus use very light gauges of metal, and are subject to extreme cyclic stresses. The potential for failure is therefore high, and the consequenses considerable. Therefore all the parts are etched and sealed to prevent chemical corrosion, and to both prevent as far as possible, and provide a sacrificial coating for the effects of galvanic corrosion.

Also, it is not uncommon for the aircaft industry to use alloys of aluminium and other metals, specifically magnesium, which gives corrosion properties different to those of pure aluminium.

Taken in context, a bit of corrosion on an antiflex plate is not going to kill dozens of people and lead to large lumps of wreckage being scattered over a wide area. We can affford to be little less careful with our corrosion protection protocols!  s:wink: :wink: s:wink:

[kanujunkie]

nope it was caused by intercrystaline(Surface) corrosion that wasn't spotted on an inspection, this a major problem for us at work as it can be hard to spot, but in the real world does not self seal itself, we spend millions each year replaceing parts because of it

[GSB]

nope it was caused by intercrystaline(Surface) corrosion that wasn't spotted on an inspection, this a major problem for us at work as it can be hard to spot, but in the real world does not self seal itself, we spend millions each year replaceing parts because of it

My understanding of this method of corrosion is that it only takes place in alloyed material? Something to to with the dissimilar metals in the alloy reacting with each other, one forming and anode, the other a cathode, and galvinc corrosion the literally corroding the metal from the inside out?

[kanujunkie]

our metals(skin) are mostly a version called Durallium

[GSB]

our metals(skin) are mostly a version called Durallium

An alloy of aluminium, copper, magnesium, manganese and silicon.

[richbay]

where do i get one from?

[kanujunkie]

where do i get one from?

See http://www.spyderchat.com/phpBB/viewtopic.php?t=9973&postdays=0&postorder=asc&highlight=corky+breast+plate&start=285

and you may want to PM CeeDapp on spyderchat as well as a post