Melemo ea Double Submerged Arc Welded Gas Line Pipe
Lefatšeng la lipeipi tsa metsi, ho na le mekhoa e fapaneng ea kaho le thepa.Mokhoa o tsebahalang oa ho kopanya lipeipi ke "double-ended submerged arc welding" (DSAW).Mokhoa ona o atisa ho sebelisoa meleng ea khase le metsi, 'me ka mabaka a utloahalang.Ka blog ena re tla hlahloba melemo ea ho sebelisaArc e kolobisitsoeng habelipipe ea lisebelisoa tsena.
Thepa ea Mechanical pipe ea SSAW
| tšepe kereiti | bonyane matla a tlhahiso | matla a fokolang a Tensile | Elongation e fokolang |
| 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 |
Sebopeho sa lik'hemik'hale tsa liphaephe tsa SSAW
| tšepe kereiti | C | Mn | P | S | V+Nb+Ti |
| Boholo % | Boholo % | Boholo % | Boholo % | Boholo % | |
| 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 |
Mamello ea Geometric ea liphaephe tsa SSAW
| Mamello ea Geometri | ||||||||||
| bophara ba kantle | Botenya ba lebota | ho otloloha | ntle le ho pota | boima | Bolelele ba lifaha tsa weld | |||||
| D | T | |||||||||
| ≤1422 limilimithara | bolelele ba 1422 mm | ＜15 limilimithara | ≥15mm | pheletso ea lipeipi 1.5m | bolelele bo feletseng | 'mele oa phala | pheletso ea peipi | T≤13mm | T ~ 13mm | |
| ±0.5% | joalo ka ha ho lumellanoe | ±10% | ± 1.5mm | 3.2 limilimithara | 0.2% L | 0.020D | 0.015D | '+10% | 3.5 limilimithara | 4.8mm |
Teko ea Hydrostatic
Peipi e tla mamella teko ea hydrostatic ntle le ho lutla ka seam se cheselletsang kapa 'mele oa phala
Manonyeletso ha a hloke ho lekoa ka mokhoa oa hydrostatically, ha feela likaroloana tsa liphaephe tse sebelisoang ho tšoaea li-joints li ne li lekoa ka katleho ka hydrostatically pele ho ts'ebetso ea ho kopanya.
Ntlha ea pele, ho kenya li-arc welding habeli ke mokhoa o sebetsang hantle le oa moruo oa ho kopanya liphaephe.Mokhoa ona o kenyelletsa ho etsa weld ka ho kenya phala ka har'a phallo ea granular ho sebelisa li-arcs tse peli tsa welding.Sena se theha weld e matla le e tšoarellang e ka mamellang khatello e phahameng le tsitsipano, e etsa hore e be e loketseng mehala ea khase le metsi.
E 'ngoe ea melemo ea mantlha ea phala e kolobisitsoeng habeli ea arc ke e hanyetsanang le kutu.The granular flux e sebelisoang ts'ebetsong ena ea ho cheselletsa e etsa lesela le sireletsang holim'a weld, e thusang ho thibela kutu le ho lelefatsa bophelo ba phala.Sena ke sa bohlokoa haholo bakeng salikhoele tsa metsi, kaha e netefatsa hore metsi a fanoang a lula a hloekile 'me a se na tšoaetso.
Ntle le ho hanyetsa kutu, liphaephe tse kolobisitsoeng habeli tsa arc li fana ka thepa e ntle haholo ea mochini.Mokhoa ona o hlahisa li-welds tse tšoanang le phala e matla le e ka tšeptjoang.Sena se bohlokoa bakeng sa liphaephe tsa khase ea tlhaho kaha se tiisa hore khase ea tlhaho e tsamaisoa ka mokhoa o sireletsehileng le o sebetsang ntle le kotsi ea ho lutla kapa ho hloleha.
Ho feta moo, liphaephe tse cheselitsoeng ka tlas'a metsi tse habeli li khona ho mamella mocheso o feteletseng le maemo a tikoloho.Sena se etsa hore e be tse loketseng bakeng sa lits'ebetso tsa lebopong le kantle ho naha tse ka pepesetsoang maemo a leholimo a mabe le maemo a ts'ebetso.Bakeng sa li-tubing tsa metsi, ho tšoarella hona ho tiisa hore liphaephe li ka tsamaisa metsi hantle ntle le ho senya ts'ebetso.
Molemo o mong oa ho sebelisa pipe e entsoeng ka metsi a mabeli e kentsoeng ka metsing ke hore bokaholimo ba eona bo boreleli ebile bo ntle.Sena se ba etsa khetho e ntle bakeng sa lisebelisoa tse kaholimo le tse tlase, kaha ho bonolo ho li hlahloba le ho li hlokomela.Ho feta moo, sebaka se boreleli sa weld se fokotsa likhohlano le ho theoha ha khatello ka har'a phala, ho thusa ho ntlafatsa ts'ebetso e akaretsang ea lits'ebetso tsa phepelo ea khase le metsi.
Qetellong, peipi e cheselitsoeng habeli ea arc ke khetho e ntle haholo bakeng sapeipi ea khasele lithapo tsa metsi.Ts'ebetso ea eona e sebetsang hantle le e theko e boima, e kopantsoeng le ho hanyetsa kutu, thepa e ntle ea mochini, ho tšoarella le botle bo botle, e etsa khetho ea pele bakeng sa kaho ea liphaephe.Ebang li tsamaisa khase ea tlhaho kapa metsi, liphaephe tsena li fana ka matla le botšepehi bo hlokahalang ho sebetsa ka mokhoa o sireletsehileng le ka katleho.Ho hlakile hore phala e kolobisitsoeng ka metsing e habeli ea arc ke letlotlo la bohlokoa lefatšeng la kaho ea lipeipi.
