Ritmo BASIC 315 V1 - Welding Parameters; Pipe;Fitting Features and Formulas

9. WELDING PARAMETERS مﺎﺤﻠﻟا تﺎﻤﻠﻌﻣ
9./1
9.1 PIPE/FITTING FEATURES
ﺮﻴﺳاﻮﻤﻟا ﺺﺋﺎﺼﺧ/تﺎﺒﻴآﺮﺘﻟا
ﺮﻴﺳاﻮﻤﻟا ﻒﻴﻨﺼﺗ/ ﻲﻓ دراﻮﻟا تﺎﺒﻴآﺮﺘﻟا ﺔﻴﺳﺎﻴﻘﻟا دﺎﻌﺑﻷا ﺔﺒﺴﻧ)SDR( ﺔﻠﺴﻠﺴﻟا ،)S( ، ﻲﻤﺳﻻا ﻂﻐﻀﻟا)NP(ﺔﻓﺎﺿﻹﺎﺑ ،
ﻰﻠﻋ ﺪﻤﺘﻌﺗ ،مﺎﺤﻠﻟا تﺎﻤﻠﻌﻣ ﻰﻟإدﺎﻌﺑأ
ﺮﻴﺳاﻮﻤﻟا/تﺎﺒﻴآﺮﺘﻟا:
D :ﻲﺟرﺎﺨﻟا ﺮﻄﻘﻟا
s : راﺪﺠﻟا ﺔآﺎﻤﺳ)اسﺎﻴﻘﻠﻟ اًرﺎﻴﻋ مﺪﺨﺘﺳ(
The pipe/fitting classification in Standard Dimension Ratio (SDR), Series (S), Nominal
Pressure (NP), as well as the welding parameters, they all depend on the dimensions
o
f
the pipe/fitting:
D: Outside diameter
s: Wall thickness (use a calibre to measure)
These are the formulas and ratios to be taken into consideration:
ﺎهرﺎﺒﺘﻋا ﻢﺘﻴﺳ ﻲﺘﻟا ﺐﺴﻨﻟاو ﻎﻴﺼﻟا ﻲﻠﻳ ﺎﻤﻴﻓ:
SDR
D
s
=
)ﺔﻴﺳﺎﻴﻘﻟا دﺎﻌﺑﻷا ﺔﺒﺴﻧ(
S
D
s
=−
⎛
⎝
⎜
⎞
⎠
⎟
1
2
1
SDR S=×+21
S
SDR
=
− 1
2
SDR
D
s
=
(Standard Dimension Ratio)
S
D
s
=−
⎛
⎝
⎜
⎞
⎠
⎟
1
2
1
SDR S
=
×
+
21
S
SDR
=
−
1
2
SDR
41
3327,626222117,6 17 13,611 9 7,4 6
S
20
1613.312,510,5108,38 6,35 4 3,2 2,5
PN (PE 80(
3,2 4
///
56
/// ///
8 1012,5 16 20 25
PN (PE 100(
4 56
/// ///
8
///
10 12,516 20 25 32
PN (PP(
2,5 3,2
///
4
/// ///
6
/// ///
10 12,5 16 20
SDR
41 33 27,6 26 22 21 17,6 17 13,6 11 9 7,4 6
S
20 16 13.3 12,5 10,5 10 8,3 8 6,3 5 4 3,2 2,5
PN (PE 80)
3,2 4 /// 5 6 /// /// 8 10 12,5 16 20 25
PN (PE 100)
4 5 6 /// /// 8 /// 10 12,5 16 20 25 32
PN (PP)
2,5 3,2 /// 4 /// /// 6 /// /// 10 12,5 16 20
(Nominal Pressure at 20° C)
) ﺪﻨﻋ ﻲﻤﺳﻻا ﻂﻐﻀﻟا 20 ﺔﻳﻮﺌﻣ ﺔﺟرد(
ﻓو ،ﺎًﻋﻮﻴﺷ ﺮﺜآﻷا ﺔآﺎﻤﺴﻟاو رﺎﻄﻗﻷﺎﺑ ﺔﺻﺎﺨﻟا لواﺪﺠﻟا ﻰﻟإ ﺔﻓﺎﺿﻹﺎﺑ ،مﺎﺤﻠﻟا تﺎﻤﻠﻌﻣ بﺎﺴﺤﻟ ﺔﻣزﻼﻟا ﻎﻴﺼﻟا ﺔﻴﻟﺎﺘﻟا تﺎﺤﻔﺼﻟا ﻲﻓ ﺪﺠﺗ فﻮﺳﺔﻓوﺮﻌﻤﻟا مﺎﺤﻠﻟا ﺮﻴﻳﺎﻌﻤﻟ ﺎًﻘ .
ﺔﻈﺣﻼﻣ : ﻲﻓ ﺔﻴﻜﻴﻟورﺪﻴﻬﻟا سوﺮﺘﻟا ﺔﺒﻠﻋ ﻲﻓ ﺎﻬﻄﺒﺿ ﻢﺘﻴﺳ ﻲﺘﻟا ﺔﻤﻴﻘﻟاﻤﻟاﻰﻟوﻷا ﺔﻠﺣﺮ ﻖﺒﺴﻤﻟا ﻦﻴﺨﺴﺘﻟا ﻂﻐﺿو بﺮﻘﻟا ﻰﻟإ ﺔﻓﺎﺿﻹﺎﺑ ﺔﻣﺪﻘﻣ
P
1
) مﺎﺤﻠﻟا ﻂﻐﺿ لدﺎﻌﻳ
P
5
( ﺐﺤﺴﻟا ﻂﻐﺿ ﻊﻣ)P
t
(ﺔﻨﻴآﺎﻤﻟا ﻲﻓ ةﺮﺷﺎﺒﻣ ﻞﻐﺸﻤﻟا ﺔﻄﺳاﻮﺑ ﻪﺳﺎﻴﻗ ﻢﺗ يﺬﻟا.