Sanding and Flash rust after media blasting

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PostPosted: Tue Jun 25, 2019 12:13 pm
Saw this rust remover comparison chart and thought you might get a kick out of it if you haven't seen it....
http://ecologicarchitecture.com/SoloHob ... /index.htm
1964 Galaxie 500 fastback 428 FE
1964 Comet Caliente (red)
1964 Comet Pro Street project (under construction)

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PostPosted: Tue Jun 25, 2019 1:03 pm
Wow ! Thanks again Dennis for all time and info provided !
With all that being said , now that I have the car in bare metal and it's flashing, should I wait to give the car the 2 part rust treatment until I have finished all the metal work, dent removal, mig welding, etc. ? Realistically , it could be a year or two until the body work is done.....
Red
1964 Galaxie 500 fastback 428 FE
1964 Comet Caliente (red)
1964 Comet Pro Street project (under construction)



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PostPosted: Tue Jun 25, 2019 5:40 pm
red lehr wrote:Wow ! Thanks again Dennis for all time and info provided !
With all that being said , now that I have the car in bare metal and it's flashing, should I wait to give the car the 2 part rust treatment until I have finished all the metal work, dent removal, mig welding, etc. ? Realistically , it could be a year or two until the body work is done.....
Red


You need to know what they have already treated the metal with!
If it is some sort of Phosphoric acid based product which it probably is your ok, BUT if not if they used something else then there may be a problem I don't know yet more info needed.

At any-rate no matter what they used You should be able to do what I explained just scrub with scotch bright really good.

And yes just me but Ya I would wait to treat the metal till all the metal work is all done! Dont worry at all about the flash rusting the 5717 & 5718 will take care of it in the end. and make the metal look brand new if you do it like I explained.

There is all sorts of metal treatments out there though you really need to know exactly what the blaster put on it after blasting! especially before you start welding you dont want to breath ZINC fumes and other stuff welding can put off of dirty metal.
Just like never clean metal with Carb or Parts cleaner sprays before welding it will kill you!
or Trichloroethylene bad stuff don't breath the fumes when welding! very dangerous.
all of these supposedly clean and remove oils and leave no residue but they do. even a little is to much to breath.
Dennis B.
A&P Mechanic, FCC General radio Telephone Operator
Line Maintenance A&P Mechanic and MOC Tech specialist.



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PostPosted: Tue Jun 25, 2019 6:19 pm
red lehr wrote:Saw this rust remover comparison chart and thought you might get a kick out of it if you haven't seen it....
http://ecologicarchitecture.com/SoloHob ... /index.htm


I have seen this before guy put some effort into it.

there is a lot of info about the 5717S and 5718S some good some bad.
Few are using the stuff correctly.
Dennis B.
A&P Mechanic, FCC General radio Telephone Operator
Line Maintenance A&P Mechanic and MOC Tech specialist.

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PostPosted: Tue Jun 25, 2019 7:42 pm
I need to find a place close to St. Louis to buy the chemicals...the Johnson Suppy Co. wants almost $64.00 to ship a gallon of 5717s metal conditioner...
1964 Galaxie 500 fastback 428 FE
1964 Comet Caliente (red)
1964 Comet Pro Street project (under construction)



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PostPosted: Wed Jun 26, 2019 2:25 am
I buy my stuff at a Local Automotive Dupont or Axalta Paint distributor.
Dennis B.
A&P Mechanic, FCC General radio Telephone Operator
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PostPosted: Wed Jun 26, 2019 12:50 pm
This is the stuff that was sprayed on the car: MORPHOLINE

Molecular Formula: C4H9NO
Chemical Names:
MORPHOLINE

110-91-8

1-Oxa-4-azacyclohexane

Tetrahydro-1,4-oxazine

Diethylene oximide

More...
Molecular Weight:
87.122 g/mol
1964 Galaxie 500 fastback 428 FE
1964 Comet Caliente (red)
1964 Comet Pro Street project (under construction)



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PostPosted: Sat Jun 29, 2019 3:27 pm
That is some Nasty stuff reading the MSDS
I guess they use it for treating Steam Boilers? and Some one probably thinks its ok to use it on cars and metal and they know wear to get the stuff cheap.... BAD IDEA!!!!!
People playing Chemical engineer = BAD IDEA!!!!!

Wow I am Not sure 5717S is going to remove that or not?
I am also not sure your not going to Get a reaction from that stuff if you treat the metal with the 5717S Phosphoric acid.??

Sanding that stuff by DA may be a health hazard! wear your respirator

I Have no idea IF using 5717S is a good idea at this point You may get a reaction when you put the stuff on your car and it mixes and starts eating the MORPHOLINE it may create some weird SALTS which could be dangerous to breath ???

Your going to need to make some calls and talk to some people, the maker of the stuff he used, would be good place to start. they should have some sort of tech line for questions.
There is a Paper out there talking about Phosphoric acid and MORPHOLINE but it was pretty heavy science stuff.

its a food additive as well, I don't think its water soluble as its a rust inhibitor in boilers but it is a food additive I don't know but I saw on one web sight said it can be removed with Acetone MEK and such But from the info I was looking at I cant be sure?
I am glad I don't have to figure this one out. Maybe some one smarter than me can offer some advise?

You May be able to contact a Axalta Chemical engineer or Dupont Chemical engineer through the Help line and leave a message to have a chemical engineer call you back! They will call you back! be patiant it took them a few days to call me back and Tell them exactly whats going on what you have whats been put on the metal and what you wanna do to the metal with there product and do they have any fear of a reaction and see what they suggest that you do?, they would be a good place to start.

When I called Dupont through the help line with a question the Tech rep could not answer over the phone a Dupont chemical engineer called me back a few days later they were extremely helpful.

Another would be to call MORPHOLINE directly as well Tell them whats been done and what you wanna do ask them about removing it and treating with Phosphoric acid based products.

I do not claim to be a chemical engineer I am very afraid of chemical reactions I have been hurt before by chemicals its no joke be careful with what your playing with Knowledge is power don't be afraid to say I don't know! and don't be afraid to reach out and ask questions!!!!!!!!! Some one knows!
Dennis B.
A&P Mechanic, FCC General radio Telephone Operator
Line Maintenance A&P Mechanic and MOC Tech specialist.
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