Powder coating chassis?
#1171593
02/04/12 06:50 AM
02/04/12 06:50 AM
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Joined: Feb 2009
Posts: 1,019
Finland
mafo
OP
super stock
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OP
super stock
Joined: Feb 2009
Posts: 1,019
Finland
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Anyone knows what can be used as a filler before powder coating? If I understand correctly they will heat it to almost 400*F , would lead work or is there something better? I m new to this but I bet some of you knows 
-65 Valiant,420", all motor,2700#, dot tires, 8,42 @ 160,2
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Re: Powder coating chassis?
[Re: rickraw]
#1171595
02/04/12 01:03 PM
02/04/12 01:03 PM
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Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
cheapstreetdustr
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master
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Posts: 6,257
acworth / N. georgia - south e...
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You may want to build a jig for it also...as the heat can cause the weld stress's to pull and or push on intersections that cause the frame to distort after being heat sinked from the bake in a powedercoating process?
365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured
[image][/image]
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Re: Powder coating chassis?
[Re: cheapstreetdustr]
#1171596
02/04/12 02:10 PM
02/04/12 02:10 PM
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Joined: Aug 2006
Posts: 687
Ohio
Chad Bittle
mopar
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mopar
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Posts: 687
Ohio
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We use JB Weld at our shop.
May be hard to get it really smooth over tin work.
Last edited by Chad Bittle; 02/04/12 03:05 PM.
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Re: Powder coating chassis?
[Re: cheapstreetdustr]
#1171597
02/04/12 05:29 PM
02/04/12 05:29 PM
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Joined: Oct 2005
Posts: 8,873
Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,873
Ontario, Canada
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Quote:
You may want to build a jig for it also...as the heat can cause the weld stress's to pull and or push on intersections that cause the frame to distort after being heat sinked from the bake in a powedercoating process?
Hmmmm ... so the heat won't affect the jig ?!?!?!?
Actually the bake process doesn't heat the base metal anywhere near the powder "melt" temp, it basically only has to melt the powder. When the item comes out of the oven it can be handled with bare hands within about ten minutes - try doing that with something that was brought up to the full 400+ degrees!
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Re: Powder coating chassis?
[Re: rickraw]
#1171599
02/05/12 06:44 AM
02/05/12 06:44 AM
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Joined: Feb 2009
Posts: 1,019
Finland
mafo
OP
super stock
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OP
super stock
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Finland
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Ok, thanks guys I guess we have to check what products are available here and maybe test a few to see how they work 
-65 Valiant,420", all motor,2700#, dot tires, 8,42 @ 160,2
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Re: Powder coating chassis?
[Re: BeEtLeJuIcE !]
#1171603
02/05/12 06:47 PM
02/05/12 06:47 PM
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Joined: Dec 2003
Posts: 2,586
Illinois, Indiana, Louisiana
ProStDodge
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master
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Illinois, Indiana, Louisiana
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NHRA general regulations mention "plating" of a chassis, but I am not sure about powder coating. Quote:
4:11 ROLL CAGE
All cage structures must be designed in an attempt to protect the driver from any angle, 360 degrees. All 4130 chromoly tube welding must be done by approved TIG heliarc process; mild steel tube welding must be approved MIG wire feed or TIG heliarc process. Welding must be free of slag and porosity. Any grinding of welds prohibited. Plating of chassis prohibited for all cars manufactured after Jan. 1, 2003, unless otherwise noted in Class Requirements; painting permitted.
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Re: Powder coating chassis?
[Re: rickraw]
#1171608
02/05/12 11:23 PM
02/05/12 11:23 PM
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Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
cheapstreetdustr
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master
Joined: Feb 2004
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acworth / N. georgia - south e...
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As i understand it chrome plating a chassis...
if you get a scratch in the chrome it could cause it to create a stress risor crack in the chromolly? similar to the phenomenon in glass
as to the jig..and powder coating...we saw this happen...My chassis guy built Panoz race car chassis for a while and they had issues with fitment of parts after powder coating..
things like radiator mounting brackets and even
suspension support members..and light or small tube brackets that where body supports..
often they would be way off..when it came time to mount the hardware..
he had to make temporary jig bars to keep these parts from moving during powder coating ..
fwiw.
long tubes with lots of little welded do-dads seem to move the most...
365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured
[image][/image]
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Re: Powder coating chassis?
[Re: dogdays]
#1171610
02/10/12 01:38 PM
02/10/12 01:38 PM
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Joined: Jul 2008
Posts: 394
md
wicked
enthusiast
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enthusiast
Joined: Jul 2008
Posts: 394
md
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A product called Lab Metal for moulding before powdercoat. Welding can introduce tension into the structure and so can fit up, tubing has already been welded along it's length. cycle frames have been known to relax from the pc baking process and walk(though typically smaller dia tube). Like stated above the longer the unsupported run the higher the chances.
It all depends how much tension is already there, but I have definitely seen where the baking process is enough heat to tweak stuff if the structure hasn't been "normalized" after welding.
Hydrogen embrittlement pretty serious , I cringe when I see plated suspension components.
Last edited by wicked; 02/10/12 02:03 PM.
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besides that, it's really hard to remove.