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Letter 15043
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Trevor Crichton |
Alternatively let it cool in the vacuum environment used for the annealing.
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Bill Reynolds |
We are facing the same exact problem and I thought it has
something to do with annealing current / voltage ...we uses stainless
steel cylinders for annealing.
(not nickel coated as usual ..)
any idea ?
Amir Sharon
- Israel
You have not mentioned the quantity of your batch for annealing and also the kilowatt rating of induction heating. You have to also mention the cycle time of heating, soaking and quenching. What is the sealing mechanism used during annealing to prevent outside air entering. Without temperature indicator, how did you measure the temperature of your batch during annealing continuously?
Balasubramanian
Venkatraman
- Navi-Mumbai, Maharashtra, India
+++++++
WE ARE MANUFACTURING COPPER TUBE, TO BE USED FOR ELECTRICAL
TERMINATIONS
WE CONTINOUSLY CAST THE TUBE , THEN DRAW THEM DOWN ON LONG HYDRUALIC
BENCHES, AFTER SEVERAL DRAWS, THE TUBES BECOME TO HARD AND SNAP. WE
LOAD THE TUBES (ON AVERAGE 2 TO 3 MTR LENGTHS) ON TO A RACK.
ROLL THE RACK INTO A ELECTRIC ELEMENT FURNACE (3.4 MTRS LONG)
WHEN THE TEMPRETURE REACHES 550DEG C THEN THE RACK IS REMOVED,
THE TUBES ARE LIFTED OUT OF THE RACK USEING CHAINS AND A HOIST AND
THEN LOWERED INTO A WATER BATH TO QUENCH
WE ARE LOOKING FOR A MORE ACCURATE WAY OF ANNEALING TO IMPROVE OUR
QUALITY AND PREVENT CRYSTAL REGROWTH.
ARNE HERZ
ENGINEERING - JOHANNESBURG SOUTH AFRICA
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December 30, 2008 We manufacture Hot dipped tin plated copper wire. After
drawing the wire the elongation is about 12 to 15%. Sudheer
Shedbalkar
January 8, 2009 Try faster cooling .
we r a cable manufacturing company n want to know how copper can be annealed and to what temperature ? is there any cooling curves to follow or is there any need for a vacuum furnace to put in so to avoid oxygen contamination ?? please give us useful sites for this respect ..thanks a lot Eng.Amjad Qade
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