Hi, The amperage range is wide! Usually in PQR the range of amperage shouldn't be wide. A run is done with an optimum range of I and V. Now, it's good idea that you control Max. of I. by
--- On Wed, 8/25/10, Muhammed Ibrahim PK <ibratech@gmail.com> wrote:
From: Muhammed Ibrahim PK <ibratech@gmail.com>
Subject: Re: [MW:6708] Reg Range of Amperage in WPS
To: materials-welding@googlegroups.com
Date: Wednesday, August 25, 2010, 6:59 AM
Hi, Control the maximum range to control heat input.
Thanks & Regards
Muhammed Ibrahim PK
On 25 August 2010 17:34, ayys4u <ayys4u@gmail.com> wrote: Dear All,
Can any one help me!
PQR Qualified with an amperage of min 350 and max 550.
As per AWS D1.1, Allowable Variation in Amperage for WPS is 10 %.
How should i consider this 10%.
Case 1
Should i Consider lesser 10 % lesser to PQR's Min Amperage and
Greater side 10 % to the max PQR Amperage.
Case 2
Or Should i consider 10% min max of Average of PQR Value.
Which case is correct?
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