Hydro Forming & Annealing?

[RustyPin]

With the expected arrival of a new Hydro form Die, am I supposed to Anneal before I place the Brass in the Die?

 

[Sniper338]

if its new brass as I assume, anneal after fire forming...

that way you get the case all the way formed, then releive the stress..

 

[Papa Charlie]

I anneal after every firing and before sizing.

 

[Ringostar]

You don't mention whether this is new or used brass. New brass should be annealled from the factory. You can always experiment and try some the way they are, and anneal some yourself first. Then see if you get a better form from either one.

 

[RustyPin]

I'm now wondering if I can tune the Brass by Softening the areas I want to grow 1st? This is going to be a super fun Project I see. This is Pulled Brass 1st. I have thought about buying some new 280AI Brass and forming that as well just to see.

I don't want Split Shoulders. As I have seen folks split the shoulders when Improving Brass this way. My 1st Experiment is with Federal 270 Pulled Brass.

 

[PatMiles]

As said above, new brass should be annealed from the factory but at which point in the process. Anneal your brass before your process, sure won't hurt.

 

[4xforfun]

New brass is already annealed. But , to be sure , it won't hurt to do it again. If you are doing it correctly, you won't hurt anything. In other words, correctly annealing a piece of brass that doesn't need it will not cause the brass to be over annealed.

Tod

 

[PatMiles]

New brass is already annealed. But , to be sure , it won't hurt to do it again. If you are doing it correctly, you won't hurt anything. In other words, correctly annealing a piece of brass that doesn't need it will not cause the brass to be over annealed.

Tod

Take note of the word in red above.

 

[4xforfun]

Take note of the word in red above.

OK..so....now I am confused.

 

[PatMiles]

OK..so....now I am confused.

I intended that for folks that make the mistake of thinking that annealing is just putting a flame to a piece of brass and calling it good. There is a bit of science behind the task of annealing.
It was not meant to denigrate you in any way.

 

[alf]

I anneal ever piece of new brass regardless of make, model, or intent......

 

[DJSBRS]

With the expected arrival of a new Hydro form Die, am I supposed to Anneal before I place the Brass in the Die?

Provided it is new never fired quality brass that you are hydro forming and expecting to move the brass to a different form than its original intent, you may not need to anneal. However, fired brass has memory and you must anneal it to relax it to form it properly to the new form state.

I have found that Federal brass is harder and I anneal it before I perform any sizing functions.
In addition, with rare exceptions, I always anneal after firing and before sizing.

DJ
DJ's Brass Service
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