[Healeys] Powder on Springs

[Ron Ray]

In the architectural steel, structural steel, bridge steel, water tank
structural steel and plate, and other steel type industries, steel must be
cleaned by abrasive blasting immediately prior to the application of any
industrial coating (primer/paint.)  The Society for Protective Coatings
(SSPC) publishes standards for the preparation of steel.  Any aggregate is
permissible (sand, glass, steel beads, and on and on) as the goal is simply
to clean the surface and achieve the proper profile ( texture) of the steel
surface to receive a protective coating.  Once such often used standard
(SSPC-SP10) is for a "near white" finish to the steel prior to coating.  Any
heat generated by this process does not result in the reduction of the
structural integrity of the steel being "blasted."   Structural steel in
buildings is not near as thick as that on a coil spring for a car.  Sheet
metal is a whole different story.  But steel material that is at least 1/8
inch in thickness would not be damaged by media blasting, providing the
individual doing the blasting knows what they are doing.
 
  Ron. 
 
-----Original Message-----
From: healeys-bounces at autox.team.net [mailto:healeys-bounces at autox.team.net]
On Behalf Of John Roesle
Sent: Monday, May 13, 2013 10:59 AM
To: Oudesluys; healeys at autox.team.net
Subject: Re: [Healeys] Powder on Springs
 
There are any number of other materials besides sand that can be employed
that generate much less heat.  Sand is preferred b/c ir's cheap and gets the
job done.  But I agree that it would be difficult to generate enough heat to
cause tensile strength loss.
 
John Roesle
Shawnee, KS. 66227
913-687-1654
 <mailto:lostboys65 at yahoo.com> lostboys65 at yahoo.com
 
________________________________
From: Oudesluys
< <mailto:coudesluijs at chello.nl> coudesluijs at chello.nl>
To:  <mailto:healeys at autox.team.net> healeys at autox.team.net
Sent: Monday, May 13, 2013
12:59 AM
Subject: Re: [Healeys] Powder on Springs
  
 
Ham fisted sandblasting
will always cause damage. To generate so much 
heat while sandblasting these
springs must have taken quite some effort. 
Always use a fine grit or glass
beads and moderate pressure and check 
the heat regularly in the springs while
at the job. It should not cause 
any problems at all, unless the springs are
so rusted that they should 
be renewed anyway.
Kees Oudesluijs
NL
 
 
Op
12-5-2013 23:06, Per Schoerner schreef:
> Hi
> Well, friend of mine sand
blasted his springs, and painted them. They 
> looked really nice, but they
didn't work as springs after fhis 
> treatment. The sand bvlasting destroyed
the spring effect on them. The 
> blasting produces heat which apparantly is
as dangerous to springs as 
> heat applied to cure paint.
> 
> Per in Sweden
> 
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-- 
Kees Oudesluijs
Dorpsstraat 183
2995XG
Heerjansdam
T: 078-677 1233
E:  <mailto:coudesluijs at chello.nl> coudesluijs at chello.nl
 
Technische commissie
Jensen Healey en GT
Het Jensen Genootschap Holland
 <http://www.jensenholland.nl> www.jensenholland.nl
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