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gouging machines capacity
I am using a constant current SCR based Air arc Gouging machine for our applications which involve gouging weld repair joints.
The machine supplier claims that this machine has the capacity to deliver up to 800Amps but at an arc voltage of 44V and below.
We are using this machine and our operators are not able to gouge at an arc voltage of 44V or below. Every time the arc voltage during Gouging is in the range of 53 - 58 V and during the gouging operation the maximum current reached is upto 400A only in the digital display.
Even the depth of gouging achieved in one go is lesser as compared to what is achieved in other makes available with us.
We feel that the supplier is playing and the machine capacity is not 800Amps.
My doubt is:
1. Whether this claim of the supplier that the machine of delivering 800Amps at 44V arc voltage can be checked? Can anyone share the mathematical formula to arrive at a conclusion wrt above claim.
2. We are using 6 and 9 mm carbon electrodes for gouging. For 9 mm I understand that 600A is the maximum recommended current. If we employ the same 9mm electrode by setting current at 800A, shouldn't it draw 800A from this machine definitely the electrode would be melting at a faster pace.
I am enclosing the Load current characteristics supplied by the supplier along with the machine.
Hope I have put forth my problems clearly. If more clarity is required please do tell me.
Waiting for your replies and help.
Thanks
The machine supplier claims that this machine has the capacity to deliver up to 800Amps but at an arc voltage of 44V and below.
We are using this machine and our operators are not able to gouge at an arc voltage of 44V or below. Every time the arc voltage during Gouging is in the range of 53 - 58 V and during the gouging operation the maximum current reached is upto 400A only in the digital display.
Even the depth of gouging achieved in one go is lesser as compared to what is achieved in other makes available with us.
We feel that the supplier is playing and the machine capacity is not 800Amps.
My doubt is:
1. Whether this claim of the supplier that the machine of delivering 800Amps at 44V arc voltage can be checked? Can anyone share the mathematical formula to arrive at a conclusion wrt above claim.
2. We are using 6 and 9 mm carbon electrodes for gouging. For 9 mm I understand that 600A is the maximum recommended current. If we employ the same 9mm electrode by setting current at 800A, shouldn't it draw 800A from this machine definitely the electrode would be melting at a faster pace.
I am enclosing the Load current characteristics supplied by the supplier along with the machine.
Hope I have put forth my problems clearly. If more clarity is required please do tell me.
Waiting for your replies and help.
Thanks
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