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Required voltage and current for Knathal wire?
Hi, i want to heat a Tungsten rod by using the Kanthal Wire(36 Awg). I want to know what is the required voltage and current to reach the 1300 deg Celsius. I am planned to make the constant current (like 3 amp) and increase the voltage.
So help me to control the temperature at 900 to 1300 deg by changing the power supply.
Comments
Best Answer 5 years ago
Easiest way is to use a temp controller ;)
Otherwise you risk to burn out the wire as you have no real temp control.
Calculating the required length or current / voltage is not enough as it also depends on how the wire is wound.
Answer 5 years ago
i want to wind without gap.
Answer 5 years ago
That means each turn touches the next and the only thing you produced is a short circuit.
Do yourself a favour and get a temp controller.
On Ebay you get them with PID contorl and SSR for under 50 bucks.
Answer 5 years ago
+1
5 years ago
Me, I'd pass a huge current straight down the tungsten to heat it, in an inert atmosphere, or it will oxidise and burn out.
5 years ago
Not all all sure this is a good way to get Tungsten rod up to 1300 deg C though. Your insulation will have to be exceedingly good to reduce heat loss to almost zero.
Answer 5 years ago
IMHO the only way of properly doing it is inside a kiln.
Quickly made from some oven bricks with an added temp controller and all is good.
However standard Kanthal wire is only good for a max of 1300°C, Kanthal A-1 up to 1400.
Even inside a proper kiln I would not expext the wire to last very long at these temps.
Answer 5 years ago
+1