Correct me when I’m wrong but this efficiency factor is not mentioned in any original calculation formula and specifications such as ASME section IX and/or EN ISO 15609/15614 therefore in my opinion cannot taken into account for official calculation of Heat Input.
Met vriendelijke groeten / Best Regards
Herman Pieper
Pieper Quality Support & Inspection
Phone: +31 (0)521 380083
Fax: +31 (0)84 7539225
Cell: +31 (0)6 51691215
www.pieper-qsi.nl
Van: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] Namens Fitria Rahman
Verzonden: vrijdag 6 mei 2011 10:48
Aan: materials-welding@googlegroups.com
Onderwerp: Re: [MW:10979] RE: 10970] heat input calculation
Dear All
i notice that there is an important piece of formula is missing. the heat input formula given by Firman shall be multiplied by efficiency which is depending on its welding process. GMAW & SAW having efficiency 0.9, GTAW=0.8, SMAW=0,75
rgds
2011/5/6 muthusrinivasan muthuselvam <msms2k@gmail.com>
conversion factor to convert the travel time to mm/sec
On Fri, May 6, 2011 at 1:46 PM, Martin Prad <martin_prad@hotmail.com> wrote:
what is 60 (V*I*60) in this formula?
From: vinod.kataria@blissanand.com
To: materials-welding@googlegroups.com
Subject: [MW:10974] RE: 10970] heat input calculation
Date: Fri, 6 May 2011 13:00:05 +0530
You can calculate by using following formula:-
Heat Input = (V*I*60)/(Travel Speed in mm) this will come in J for KJ please further devide it with 1000.
For the below value the Heat Input shall be
0.50 KJ.
With kind regards,
Vinod Kumar Kataria
GM - Operations
Bliss Anand Private Limited,
92B/93B Sector 5
IMT Manesar,Gurgaon,
National Capital Region Delhi.
India .
Phone : +91-124-4366000 (9 Lines)
Mobile Phone : +91-9560199004
Fax : +91-124-2290884
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Martin Prad
Sent: Friday, May 06, 2011 11:00 AM
To: materials-welding@googlegroups.com
Subject: [MW:10970] heat input calculation
gents,
how to calculate the heat input in KJ/mm if i have got the folowing parameters?
Amperage=71
Voltage=9.5
Travel speed=3.2 inch/minute
can you please put these in the formula?
thanks.
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