9. WELDING PARAMETERS
مﺎﺤﻠﻟا تﺎﻤﻠﻌﻣ
9./2
ﺔﻈﺣﻼﻣ
2 : دﺎﻌﺑﻷا نأ ﻦﻣ ﻞﻐﺸﻤﻟا ﺪآﺄﺘﻳ نأ ﺐﺠﻳ ،ﺎﻨه ةدراﻮﻟا لواﺪﺠﻟا ماﺪﺨﺘﺳا ﻞﺒﻗﺔﻴﻠﻌﻔﻟا ﺮﻴﺳاﻮﻤﻠﻟ/ تﺎﺒﻴآﺮﺘﻟاﻮﺗﻖﻓا ﺔﻴﻤﺳﻻا دﺎﻌﺑﻷا . ﺐﺠﻳ ﻪﻧﺈﻓ ،ﺎﻬﻌﻣ ﻖﻓاﻮﺘﺗ ﻢﻟ اذإ
ﺔﻣﺪﻘﻤﻟا ﻎﻴﺼﻟا ماﺪﺨﺘﺳﺎﺑ مﺎﺤﻠﻟا تﺎﻤﻠﻌﻣ بﺎﺴﺣ)ﺔﻳرﺎﺴﻟا ﺢﺋاﻮﻠﻟا ﻞﺒﻗ ﻦﻣ لﻮﺒﻘﻤﻟا ﺢﻣﺎﺴﺘﻟا قﺎﻄﻧ مﺮﺘﺤﺗ ﺔﻴﻠﻌﻔﻟا دﺎﻌﺑﻷا نأ ﻦﻣ ﺪآﺄﺗ ،ﺔﻟﺎﺤﻟا ﻩﺬه ﻲﻓ .( اًرﺎﻴﻋ ﺎًﻤﺋاد مﺪﺨﺘﺳا
سﺎﻴﻘﻠﻟ.
ﺔﻈﺣﻼﻣ
3: ﺴﺗ ﺎﻨه ﺔﻣﺪﻘﻤﻟا ﻢﻴﻘﻟاو ﻎﻴﺼﻟا ﻎﻠﺒﺗ ﻲﺘﻟا مﺎﺤﻠﻟا ﻮﺟ ﻰﻠﻋ يﺮ20 ﺔﻴﺳﺎﻘﻟا ﺲﻘﻄﻟا فوﺮﻇ ﻦﻣ ﺔﺒﺳﺎﻨﻤﻟا ﺔﻳﺎﻤﺤﻟا ﺮﻴﻓﻮﺗ ﻊﻣ ،ﺔﻳﻮﺌﻣ ﺔﺟرد.
ﺔﻈﺣﻼﻣ
4 : تﺎﺒﻴآﺮﺘﻟاو ﺮﻴﺳاﻮﻤﻟا ﻢﻴﻗ ﻦﻋ ﺎًﻤﺋاد ﺮﻴﺒﻌﺘﻟا ﺐﺠﻳD وs ﺮﺘﻤﻴﻠﻠﻤﻟا ةﺪﺣﻮﺑ]ﻢﻠﻣ.[
ﺔﻳرﺎﺠﺘﻟا ﺮﻴﺳاﻮﻤﻠﻟ تﺎﺑﺎﺴﺤﻟا ﺪﺠﺗ فﻮﺳ ،ﺔﻣﺎﻌﻟا ﺔﻐﻴﺼﻟا ﺐﻧﺎﺠﺑ .
In the following pages you will find the formulas to calculate the welding parameters, as well as comprehensive tables for the
most common diameters and thicknesses, according to well known welding standards.
NOTE 1: The value to be set on the hydraulic gearcase in PHASE 1 is given by the addition of the approach and pre-heating
pressure P
1
(equal to the welding pressure P
5
) with the dragging pressure (P
t
) measured by the operator directly on the
machine.
NOTE 2: Before using the charts herewith, the operator must be sure that the real dimensions of the pipe/fitting match with the
nominal ones. If they don’t, then the welding parameters must be calculated using the given formulas (in this case, be sure that
the real dimensions respect the tolerance range accepted by the regulations in force). Always use a caliber to measure.
NOTE 3: The formulas and the values herewith given apply to a welding ambient of 20° C, with adequate protection against
adverse weather conditions.
NOTE 4: Pipe/fitting D and s values must always be expressed in millimetres [mm].
Next to the general formula, you’ll find the calculations for a commercial pipe.
ﻩﺎﺒﺘﻧﻻا ﻰﺟﺮﻳ!!! : نﻮﻧﺎﻘﻟا10520 (01/97-UNI ( مﺎﺤﻠﺑ صﺎﺨﻟاPE 80 ﻪﻧأ ﻰﻠﻋ ﺺﻨﻳﻢﺘﻳ ﻻأ ﺐﺠﻳ ﺔﻤﻴﻗ ﺖﻧﺎآ اذإ مﺎﺤﻠﻟا
1
P ) ﺎًﻤﺋاد لدﺎﻌﺗP5( ﻞﻗأ ﻂﻐﺿ ﻦﻣ
ﺐﺤﺴﻟا
P
t
.
ATTENTION PLEASE!!! : UNI-10520 (01/97) regulation for PE 80 welding establishes that the welding must not be
performed if P
1
(always equal to P5) is inferior to the dragging pressure P
t
.
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