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Re: [MW:9302] Re: Calibration of Welding m/c.

By Materials & Welding
Please also refer standard for calibration & validation of such equipments i.e. BS 7570. 
 
The purpose is to check whether the parameters indicated on the equipment is same or close to the output. The acceptable tolerance on the parameters i.e. volts, amps, wire feed rate etc. are prvodied in above stated standard.
 
Dokku Ajay Kumar
Mobile: +966 500071054


From: hpi001 <pieper-qsi@kpnmail.nl>
To: Materials & Welding <materials-welding@googlegroups.com>
Sent: Tue, January 18, 2011 12:18:58 PM
Subject: [MW:9296] Re: Calibration of Welding m/c.

Dear Sir,

In the past it was not required to calibrate your welding equipment
but it was the responsibility of a manufacturer to execute such. So
manufacturers with comprehensive quality requirements or who are
welding critical materials and want to be sure the equipment delivers
the chosen parameters did perform this already for many years. Today
more and more specifications require calibration of equipment on a
annual base, this is not only for actual production but also for WPS
qualification.
For example when your production facility must be approved according
to ISO 3834 (quality assurance of production process) this is one of
the requirements.
As already mentioned by msms you need to ensure parameters shown on
the displays are correct in order to guarantee proper heat input.

Best Regards,

Herman Pieper

On 18 jan, 08:28, prashant pansare <prashantpan...@yahoo.co.in> wrote:
> Dear all,
> Why we need to have calibration certificates of welding machines prior to start of fabrication activity?
> As we can qualify WPS without the same.
> Pl. reply.
> Thanks & Regds,
> PSP

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