Ho Utloisisa Bohlokoa ba Boleng ba Pipe ea Khase ea Tlhaho: Pipe ea X42 SSAW, ASTM A139 le EN10219
X42SSAWphalake mofuta oa peipi ea khase ea tlhaho e sebelisoang hangata indastering ea oli le khase.E etsoa ka mokhoa oa ho tjheseletsa arc ka tlas'a metsi o hlahisang liphaephe tsa boleng bo holimo le tse tšoarellang.Pipe ea X42 SSAW e na le matla a phahameng le lisebelisoa tse ntle tsa lik'hemik'hale, e etsa hore e tšoanelehe hantle bakeng sa litlhoko tse boima tsa lipalangoang tsa khase ea tlhaho.Ho hanyetsa ha eona ho hoholo le ho phatloha ho etsa hore e be khetho ea pele bakeng sa merero ea kaho ea lipeipi.
ASTM A139ke tekanyetso e 'ngoe ea bohlokoa bakeng sa lipeipi tsa khase ea tlhaho.Tlhaloso ena e akaretsa phala ea tšepe ea electrofusion (arc) e cheselitsoeng e otlolohileng kapa ea spiral seam e sebelisetsoang ho tsamaisa likhase, mouoane, metsi le lino tse ling.Pipe ea ASTM A139 e tsebahala ka ho ts'epahala le ts'ebetso ea nako e telele tlasa maemo a thata a ts'ebetso.Liphaephe tsena li etselitsoe ho mamella likhatello tse phahameng le ho feto-fetoha ha mocheso, e leng se etsang hore e be tse loketseng bakeng sa ho tsamaisa le ho tsamaisa khase ea tlhaho.
| Standard | Kereiti ea tšepe | Sebopeho sa lik'hemik'hale | Thepa ea tensile | Teko ea Charpy Impact le Teko ea ho theola boima ba 'mele | |||||||||||
| C | Mn | P | S | Ti | Tse ding | CEV4) (%) | Rt0.5 Mpa Ho hlahisa matla | Rm Mpa Tensile matla | A% L0=5.65 √ S0 Elongation | ||||||
| max | max | max | max | max | max | max | min | max | min | max | |||||
| API Spec 5L (PSL2) | B | 0.22 | 1.20 | 0.025 | 0.015 | 0.04 | Bakeng sa limaraka tsohle tsa tšepe: Ho ikhethela ho eketsa Nb kapa V kapa motsoako ofe kapa ofe ea bona, empa Nb+V+Ti ≤ 0.15%, le Nb+V ≤ 0.06% bakeng sa sehlopha sa B | 0.25 | 0.43 | 241 | 448 | 414 | 758 | Ho baloa ho ea ka foromo e latelang: e=1944·A0.2/U0.9 A: Karolelano sebaka sa sampole ho mm2 U: Matla a fokolang a boletsoeng ka tlase Mpa | Ho na le liteko tse hlokahalang le liteko tsa boikhethelo.Bakeng sa lintlha, sheba maemo a mantlha. |
| X42 | 0.22 | 1.30 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 290 | 496 | 414 | 758 | ||||
| X46 | 0.22 | 1.40 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 317 | 524 | 434 | 758 | ||||
| X52 | 0.22 | 1.40 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 359 | 531 | 455 | 758 | ||||
| X56 | 0.22 | 1.40 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 386 | 544 | 490 | 758 | ||||
| X60 | 0.22 | 1.40 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 414 | 565 | 517 | 758 | ||||
| X65 | 0.22 | 1.45 | 0.025 | 0.015 | 0.06 | 0.25 | 0.43 | 448 | 600 | 531 | 758 | ||||
| X70 | 0.22 | 1.65 | 0.025 | 0.015 | 0.06 | 0.25 | 0.43 | 483 | 621 | 565 | 758 | ||||
| X80 | 0.22 | 1.65 | 0.025 | 0.015 | 0.06 | 0.25 | 0.43 | 552 | 690 | 621 | 827 | ||||
| Si Mn+Cu+Cr Ni Che V 1)CE(Pcm)=C+ 30 + 20 + 60 + 15 + 10 +58 | |||||||||||||||
| Mn Cr+Mo+V Ni+Cu 2)CE(LLW)= C + 6 + 5 + 15 | |||||||||||||||
EN10219ke tekanyetso ea Europe e hlakisang maemo a tekheniki a thomello bakeng sa likarolo tse nang le sekoti tse entsoeng ka mokhoa o batang tsa tšepe e sa tsoakoang le tšepe e kolobisitsoeng hantle.Leha EN10219 e sa etselitsoe lipeipi tsa khase ea tlhaho ka ho khetheha, litlhoko tsa eona tse thata bakeng sa ho tšoarella, ho nepahala ha sebopeho le thepa ea mochini li e etsa khetho e nepahetseng bakeng sa merero e itseng ea lipeipi tsa khase.Ho sebelisa liphaephe tse tsamaellanang le litekanyetso tsa EN10219 ho ka ntlafatsa botšepehi le bophelo ba ts'ebeletso ea sistimi ea hau ea kabo ea khase ea tlhaho.
Bohlokoa ba ho khetha pipe ea boleng ba khase ea tlhaho bo ke ke ba feteletsoa.Liphaephe tsa boleng bo tlaase kapa tse sa tsitsang li ka baka likotsi tse kholo tikolohong, polokeho ea sechaba le ho tšepahala ka kakaretso ha phepelo ea khase.Ka hona, lits'ebeletso tsa khase ea tlhaho, basebetsi ba lipeipi le batsamaisi ba merero ba tlameha ho etelletsa pele ts'ebeliso ea lisebelisoa tsa lipeipi tse netefalitsoeng le tse thehiloeng hantle joalo ka phala ea X42 SSAW, ASTM A139 le EN10219.
Ka kakaretso,peipi ea khase ea tlhahokhetho ke karolo ea bohlokoa ea moralo le kaho ea lipeipi.Menahano ea boleng, joalo ka matla a thepa, ho hanyetsa kutu, le ho latela litekanyetso tsa indasteri, li lokela ho tsamaisa ts'ebetso ea ho etsa liqeto.Ka ho khetha liphaephe tse tšepahalang le tse tšepahalang, joalo ka liphaephe tsa X42 SSAW, ASTM A139, le EN10219, bankakarolo ba ka netefatsa ts'ebetso ea nako e telele le polokeho ea lisebelisoa tsa lipalangoang tsa khase ea tlhaho.
Qetellong, ho bohlokoa ho etelletsa pele ts'ebeliso ea lipeipi tsa khase ea tlhaho tsa boleng bo holimo tse fihlelang maemo a indasteri mme li na le thepa e hlokahalang ea mochini le lik'hemik'hale.Ka ho khetha likhetho tse tšepahalang tse joalo ka liphaephe tsa X42 SSAW, ASTM A139 le EN10219, basebelisi ba lipeipi ba ka netefatsa botšepehi le polokeho ea nako e telele ea lits'ebetso tsa bona tsa phepelo ea khase ea tlhaho.
