Subject: Re: Scale removing solutions

From: [email-masked] (MR WILLIAM A HOCHELLA)
Date: Thu, 29 Feb 1996 19:58:39 EST

To All,
Here is a archaic but interesting story:
In the real early days of wire drawing there were no exotic precoates 
or lubricant carriers or lubricants much beyond tallow. In order for 
the tallow to be drawn through the die a "sull coat" was applied to 
the rod as a carrier. The prescribed method of application of the 
sull coat was to set the hot finished rods in a pile of pig manure in 
an area where the workers in the wire mill would also relieve 
themselves. The action of the manure and urine was to etch off the 
scale from the hot working and leave a soft coating of red iron oxide 
behind. 
I worked in a wire mill for a while and our technology was a little 
better than this.

Bill Hochella

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From: [email-masked]
Date: Fri, 1 Mar 1996 18:31:45 -0500

re: pig manure for wire scale reduction

I like it!!  We go to extremes with the High Temperature and Stainless wire,
using hot (900 F.) Kolene to reduce the surface scale (oxides) to metalics
and then hit the wire with cold water. It either losens the scale or blasts
it off.  This is followed by hydrochloric/hydroflouric bath and washing.
 I'll suggest the pig manure the next time we have a scale problem at the
mill.  Thanks Bill.
Mike Schermerhorn

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From: [email-masked] (jeff)
Date: Mon, 4 Mar 96 09:30 CST

>Linseed Oil and Wax are about as traditional as you can 
>get in metal finishing.  You can burn it off for a warm 
>black or brown finish.  You can also appy it to brushed or 
>bright finished metal as a coating.  It works really well 
>and does a very good job at preventing rust.  As a cold 
>finish, mix it 50/50 with mineral spirits and add japan 
>drier.  It will be thin enough to get into every crack and 
>crevice, and the Japan drier will help it dry promptly.  
>Linseed oil on metal minus the drier takes DDAAAYYYSSS.... 
>to dry.
>

Franklyn:

What is Japan drier? Where can I get it?

Thanks, Jeff

Jeff Reiter
Frankfort, IL
[email-masked]