Hi I´m Omar López from méxico and i want to know about the correct welder process . Actually i work with the Sput welder process and i have a problem in the nut welder process, this is cause when i weld to nut the aparence is burned and the color changed of white to black

-- Omar López Alemán (olopez@baymex.com.mx), November 13, 2002

Answers

Response to how can to weld a nut and it don´t present a burned after the process and change the color. eg. white to black

Dear Mr.Omar,

Yours is quite a common problem which is encountered while nut welding.It depends a lot on machine settings, machine capacity.What you require is to give a pulse of high current in a small time.This ensures that the heat is restricted to the projection on the nuts only.

We are manufacturing nut welding machines of Capacitor Discharge type where we pass a heavy current in a short time of about 9 milliseconds.There is no discolouration of the nut or the component.

Regards,

Subhash

-- Subhash Patwardhan (artech1@vsnl.com), November 26, 2002.

Response to how can to weld a nut and it don´t present a burned after the process and change the color. eg. white to black

u should use good digital timer, set with low timings i.e. .01sec to .05sec but u should increase heavy (higher k.v.a), then u get good result. with regards, mohansundaram.n former committee president,Tamilnadu stainless steel mfrs association.

-- mohansundaram.n (steelneed2000@yahoo.com), September 27, 2003.