Rust Preventitive Challenge

[swall]

I have a rather unique set of requirements for a short term rust preventitive that will not bake into a varnish during a subsequent 450F stress relief. We make springs that get shot peened and then are given a 450F stress relief. It is not an inline process, so we have the potential for shot peened springs to sit around for up to 8 hours in an plant environment that is not humidity controlled. So, I need a short term rp that will not bake on to the parts during stress relief. Anyone got any ideas?

 

[Metalguy]

I think you can use something like WD40. It offers short term corrosion protection, and will be long gone at elevated temp.

"You see, wire telegraph is like a very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? Radio operates the same way: You send signals here, they receive them there. The only difference is there is no cat." A. Einstein

 

[swall]

Yes, something like that. I may have found a Henkel product that will work--solvent based. not really intended for corrosion protection, but does provide some short term.

 

[EdStainless]

There use to be some 'flash oils' that were used in thread rolling and similar applications. They were designed to flash off during heat treating. They may not be around any longer because of VOC rules.
Could you build 'dry boxes' to store them in while they wait?

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Plymouth Tube

 

[swall]

Ed--at this point the strategy will be to "manage the issue", i.e. try not have more springs on the shop floor than can be peened and stress relieved in one shift. So, no, any sort of "dry box" or low humidity storage would be over kill. The flash-off oils seem like the best band-aid at this point. The Henkel product that was suggested seems to be something like "flash oil". Actually, our Henkel rep refered to the product as a "vanishing oil".

 

[TVP]

vanishing oils are most commonly used as stamping lubricants, so that the presses don't become flooded with liquid lubricant. The solvent evaporates under normal/ambient conditions, leaving a thin lubricant layer behind. Be careful, as the lubricant can be compounded with chlorinated paraffins (extreme pressure additive), which are very difficult to clean/remove from the surface.

 

[unclesyd]

Here are two materials used to control Flash rust in the the surface preparation for powder coating. They might be applicable to your problem. The Hold-Tight material is used alocal powder coating facility. For all types of coaings. Information is in both sources.

http://www.targetproducts.com/prod-detail.aspx?id=9992264

http://www.google.com/url?sa=t&rct=...ust&source=web&cd=6&ved=0CGcQFjAF&url=http://

http://www.chlor-rid.com/productInf...XEh_0E&usg=AFQjCNEK4SxRe3z_2be2wBi5vkyVGQSyPw

 

[swall]

Thanks, unclesyd. Those two products looked very interesting and gives me a few more tools to deal with the problem when it arises.