Annealing copper for boiling building - question
Annealing copper for boiling building - question
I have a question regarding annealing copper.
In the process of heating, bending, forming, reheating, etc,
In what state of hardness do you leave the copper?
In other words, if you have finished forming the copper and it is still pliable,
do you leave it that way? If not, how do you harden it without changing the shape?
Do you tap it lightly?
Thanks...
In the process of heating, bending, forming, reheating, etc,
In what state of hardness do you leave the copper?
In other words, if you have finished forming the copper and it is still pliable,
do you leave it that way? If not, how do you harden it without changing the shape?
Do you tap it lightly?
Thanks...
- Bill Shields
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Re: Annealing copper for boiling building - question
If you have heated it, then it is soft.
If you have bashed it, then it is not as soft.
It stays in whatever state it is in when you are finished with it.
There is no need to do anything else.
If you have bashed it, then it is not as soft.
It stays in whatever state it is in when you are finished with it.
There is no need to do anything else.
Too many things going on to bother listing them.
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Re: Annealing copper for boiling building - question
And, after you heat it for silver soldering, it is soft again.
Bruce Mowbray
Springville & Southern RR
TMB Manufacturing & Locomotive Works
Springville & Southern RR
TMB Manufacturing & Locomotive Works
- Bill Shields
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Re: Annealing copper for boiling building - question
which is why there is no reason to do anything else...
Too many things going on to bother listing them.
Re: Annealing copper for boiling building - question
OK, that makes sense.
So even if the copper is soft it will have the same strength to hold
boiler pressure?
So even if the copper is soft it will have the same strength to hold
boiler pressure?
- Bill Shields
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Re: Annealing copper for boiling building - question
ALL copper boiler calculations should be done for ANNEALED copper.
Too many things going on to bother listing them.
Re: Annealing copper for boiling building - question
Bill Shields wrote:ALL copper boiler calculations should be done for ANNEALED copper.
OK, that makes sense. I didn't know that.
Thanks guys.
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Re: Annealing copper for boiling building - question
Copper is a wonderful material for boilers. (Apart from the cost!)
When first made it will be annealed from the heat used to silver solder it.
Do a pressure test, or steam it for the first time, and it will expand slightly.
That will work harden it, and you soon end up with hard or half-hard copper.
At that point, you just use it for the next X years, and with reasonable care, X may well be 40 or 50.
When first made it will be annealed from the heat used to silver solder it.
Do a pressure test, or steam it for the first time, and it will expand slightly.
That will work harden it, and you soon end up with hard or half-hard copper.
At that point, you just use it for the next X years, and with reasonable care, X may well be 40 or 50.
http://www.alanstepney.info
Model Engineering, Steam and workshop pages.
Model Engineering, Steam and workshop pages.
Re: Annealing copper for boiling building - question
alanstepney wrote:Copper is a wonderful material for boilers. (Apart from the cost!)
When first made it will be annealed from the heat used to silver solder it.
Do a pressure test, or steam it for the first time, and it will expand slightly.
That will work harden it, and you soon end up with hard or half-hard copper.
At that point, you just use it for the next X years, and with reasonable care, X may well be 40 or 50.
Great explanation.
Thanks!