Ritmo BASIC 160 V1, Use And Maintenance Handbook

Page: 73 / 95

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 ﻰﻟإ دﺎﻌﺑأ ﺮﻴﺳاﻮﻤﻟا / تﺎﺒﻴآﺮﺘﻟا :
D : ﻲﺟرﺎﺨﻟا ﺮﻄﻘﻟا
s : راﺪﺠﻟا ﺔآﺎﻤﺳ ) ا سﺎﻴﻘﻠﻟ 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
of
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
= × +
2 1 S
SDR
=
−
1
2
SDR
D
s
=
(Standard Dimension Ratio)
S
D
s
= −
⎛
⎝⎜ ⎞
⎠⎟
1
2
1
SDR S
= × +
2 1
S
SDR
=
−
1
2
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
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 فﻮﺳ ﺔﻓوﺮﻌﻤﻟا مﺎﺤﻠﻟا ﺮﻴﻳﺎﻌﻤﻟ ﺎًﻘ .
ﺔﻈﺣﻼﻣ : ﻲﻓ ﺔﻴﻜﻴﻟورﺪﻴﻬﻟا سوﺮﺘﻟا ﺔﺒﻠﻋ ﻲﻓ ﺎﻬﻄﺒﺿ ﻢﺘﻴﺳ ﻲﺘﻟا ﺔﻤﻴﻘﻟا ﻤﻟا ﻰﻟوﻷا 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 .