Ubwino wa Double Submerged Arc Welded Gas Line Pipe
Padziko la mipope, pali njira zosiyanasiyana zomangira ndi zipangizo.Njira yotchuka yolumikizira chitoliro ndi kuwotcherera kwa arc owirikiza kawiri (DSAW).Njirayi imagwiritsidwa ntchito kwambiri pamizere ya gasi ndi madzi, ndipo pazifukwa zomveka.Mu blog iyi tiwona ubwino wogwiritsa ntchitokawiri kumizidwa arc weldedpipeni mumapulogalamu awa.
The Mechanical Properties wa chitoliro cha SSAW
kalasi yachitsulo | mphamvu zochepa zokolola | mphamvu zochepa zolimba | Minimum Elongation |
B | 245 | 415 | 23 |
x42 | 290 | 415 | 23 |
x46 | 320 | 435 | 22 |
X52 | 360 | 460 | 21 |
x56 | 390 | 490 | 19 |
X60 | 415 | 520 | 18 |
x65 | 450 | 535 | 18 |
X70 | 485 | 570 | 17 |
Kuphatikizika kwa Chemical kwa mapaipi a SSAW
kalasi yachitsulo | C | Mn | P | S | V+Nb+Ti |
Zokwanira % | Zokwanira % | Zokwanira % | Zokwanira % | Zokwanira % | |
B | 0.26 | 1.2 | 0.03 | 0.03 | 0.15 |
x42 | 0.26 | 1.3 | 0.03 | 0.03 | 0.15 |
x46 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
X52 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
x56 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
X60 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
x65 | 0.26 | 1.45 | 0.03 | 0.03 | 0.15 |
X70 | 0.26 | 1.65 | 0.03 | 0.03 | 0.15 |
Kulekerera kwa Geometric kwa mapaipi a SSAW
Kulekerera kwa geometric | ||||||||||
kunja kwake | Khoma makulidwe | kuwongoka | kunja-kuzungulira | misa | Utali weld weld kutalika | |||||
D | T | |||||||||
≤1422 mm | kutalika - 1422 mm | <15 mm | ≥15mm | kutalika kwa bomba 1.5m | utali wonse | thupi la chitoliro | payipi mapeto | T≤13mm | T-13 mm | |
± 0.5% | monga anavomereza | ±10% | ± 1.5mm | 3.2 mm | 0.2% L | 0.020D | 0.015D | + 10% | 3.5 mm | 4.8 mm |
Kuyesedwa kwa Hydrostatic
Chitolirocho chiyenera kupirira kuyesedwa kwa hydrostatic popanda kutayikira kudzera mumsoko wowotcherera kapena thupi la chitoliro
Zolumikizira siziyenera kuyesedwa ndi hydrostatically, malinga ngati zigawo za chitoliro zomwe zimagwiritsidwa ntchito polemba zolumikizira zidayesedwa bwino ndi hydrostatically asanayambe kujowina.
Choyamba, kuwotcherera kawiri kumizidwa kwa arc ndi njira yabwino komanso yotsika mtengo yolumikizira mapaipi.Njirayi imaphatikizapo kupanga weld poviika chitoliro mu granular flux pogwiritsa ntchito ma arcs awiri.Izi zimapanga weld yamphamvu komanso yolimba yomwe imatha kupirira kuthamanga kwambiri komanso kupsinjika, ndikupangitsa kuti ikhale yabwino kwa mizere ya gasi ndi madzi.
Mmodzi mwa ubwino waukulu wa pawiri kumizidwa arc welded chitoliro ndi kukana dzimbiri.Kuthamanga kwa granular komwe kumagwiritsidwa ntchito powotcherera kumapangitsa kuti pakhale chitetezo pamwamba pa weld, zomwe zimathandiza kuti zisawonongeke ndikuwonjezera moyo wa chitoliro.Izi ndizofunikira makamaka kwamizere ya madzi tubing, chifukwa zimatsimikizira kuti madzi operekedwa amakhala oyera komanso opanda matenda.
Kuphatikiza pa kukana kwa dzimbiri, mapaipi omizidwa kawiri arc welded amapereka zinthu zabwino zamakina.Njirayi imapanga ma welds yunifolomu ndi chitoliro cholimba komanso chodalirika.Izi ndizofunika kwambiri pamapaipi a gasi chifukwa zimatsimikizira kuyenda bwino kwa gasi wachilengedwe popanda chiwopsezo cha kutayikira kapena kulephera.
Kuonjezera apo, mipope iwiri yomizidwa ndi arc welded imatha kupirira kutentha kwambiri komanso chilengedwe.Izi zimawapangitsa kukhala abwino kwa mapulogalamu apamtunda ndi akunyanja omwe amatha kukumana ndi nyengo yoyipa komanso momwe amagwirira ntchito.Pamachubu amadzi, kulimba uku kumatsimikizira kuti mapaipi amatha kusuntha madzi bwino popanda kusokoneza magwiridwe antchito.
Ubwino wina wogwiritsa ntchito chitoliro chowirikiza cha arc welded ndi chakuti pamwamba pake ndi yosalala komanso yokongola.Izi zimawapangitsa kukhala njira yokongola yoyika pamwamba ndi pansi, chifukwa ndizosavuta kuziwona ndikuzisamalira.Kuphatikiza apo, malo osalala a weld amachepetsa kukangana ndi kutsika kwamphamvu mkati mwa chitoliro, zomwe zimathandizira kuwongolera magwiridwe antchito a gasi ndi madzi.
Pomaliza, pawiri kumizidwa arc welded chitoliro ndi njira yabwino kwambirichitoliro cha gasindi tubing madzi.Njira yake yowotcherera yogwira bwino komanso yotsika mtengo, yophatikizidwa ndi kukana kwa dzimbiri, zida zabwino zamakina, kulimba komanso kukongola, zimapanga chisankho choyamba pomanga mapaipi.Kaya amanyamula gasi kapena madzi, mapaipiwa amapereka mphamvu ndi kudalirika kofunikira kuti agwire ntchito moyenera komanso moyenera.Mwachiwonekere, chitoliro chomizidwa ndi mipiringidzo iwiri ndi chofunikira kwambiri pantchito yomanga mapaipi.