I-Welded Steel Pipe: umhlahlandlela ophelele wokuqinisekisa ukuxhumana okusebenzayo nokwethembekile

Yethula:

Ngaphesheya kwezimboni, amapayipi ensimbi asetshenziswa kakhulu ngamandla abo, ukuqina, kanye nokuguquguquka okuhlukahlukene. Lapho ujoyina amapayipi ensimbi, i-welding yindlela ekhethwayo. I-Welding idala ukuxhumana okuqinile okungamelana nezingcindezi eziphakeme, okwenza kube kubaluleke kakhulu emikhakheni efana nokwakha, uwoyela negesi kanye nokwenziwa. Kule bhulogi, sizongena ekubalulekeni kwe-welding yensimbi yensimbi futhi sinikeze umhlahlandlela ophelele wokuqinisekisa ukuxhumana okusebenzayo nokwethembekile

Impahla yemishini

Ukwakheka kwamakhemikhali

Ukuhlolwa kweHydrostatic

Ubude bepayipi ngalinye buzovivinywa ngumenzi ngengcindezi ye-hydrostatic ezokhiqiza odongeni lwamapayipi ingcindezi engaphansi kwamandla ka-60% acacisiwe amancane okushisa avumayo ekushiseni kwegumbi. Ingcindezi izonqunywa yi-equation elandelayo:
P = 2st / d

Ukuhlukahluka okuvumelekile ezinsimbi nasezilinganiso

Ubude bepayipi ngalinye buzosindwa ngokwehlukana futhi isisindo salo ngeke bahlukane ngaphezu kwe-10% ngaphezulu noma ngo-5.5% ngaphansi kwesisindo salo sethiyori, kubalwa kusetshenziswa ubude bayo nobude bayo ngeyunithi ngayinye ubude kanye nesisindo sayo ngeyunithi yayo ubude kanye nesisindo sayo ngeyunithi yayo ngayinye ubude.
Ububanzi obungaphandle ngeke buhluka kakhulu kune- ± 1% kusuka kububanzi obucacisiwe bangaphandle.
Ubukhulu bodonga nganoma yisiphi isikhathi ngeke bungabi ngaphezu kwe-12,5% ngaphansi kobukhulu obudongeni obucacisiwe.

Ubude

Ubude obungahleliwe obungahleliwe: 16 kuya ku-25ft (4.88 kuya ku-7.62m)
Ubude obungahleliwe obuphindwe kabili: ngaphezulu kwe-25ft kuya ku-35ft (7.62 kuye ku-10.67m)
Ubude be-Uniform: Ukuhluka okuvumelekile ± 1in

Iphelela

Izinselo zamapayipe zizofakwa iziphetho ezicacile, nemibungu emaphethelweni izosuswa
Lapho ipayipi liphela lichazwe ukuba yi-Bevel Ends, i-angle izoba ngama-30 kuye kwangama-35 degree

1. Qonda amapayipi ensimbi:

 Amapayipi ensimbiWoza ngosayizi ahlukahlukene, bobunjwa kanye nezinto zokwakha, ngamunye ulungele izinhlelo ezithile. Zivame ukwenziwa ngensimbi yekhabhoni, insimbi engenasici noma insimbi ye-alloy. Amapayipi e-carbon asetshenziswa kabanzi ngenxa yokufinyeleleka kwawo namandla, ngenkathi amapayipi ensimbi angenasici anikela ngokumelana kahle nokugqwala. Ezindaweni eziphakeme zokushisa, kukhethwa amapayipi ensimbi ye-alloy. Ukuqonda izinhlobo ezahlukene zepayipi lensimbi kuzosiza ekutholeni inketho efanelekile ye-welding.

2. Khetha inqubo ye-welding:

Kunezinqubo ezahlukahlukene ze-welding ezisetshenziselwa ukujoyina ipayipi lensimbi, kufaka phakathi i-arc welding, i-tig (tungsten inert gas) i-welding, i-mig (insimbi inert gas) i-welding, futhi yafaka i-arc welding. Ukukhethwa kwenqubo ye-welding kuncike ezintweni ezifana nohlobo lwensimbi, ububanzi bepayipi, indawo ye-welding kanye nomklamo ohlanganyelwe. Indlela ngayinye inezinzuzo nokulinganiselwa kwayo, ngakho-ke ukukhetha inqubo efanelekile yohlelo lokusebenza olufunayo kubalulekile.

3. Lungiselela ipayipi lensimbi:

Ukulungiselela amapayipi afanele ngaphambi kokufudumeza kubalulekile ekufezeni ukuhlangana okuqinile nokuthembekile. Kubandakanya ukuhlanza indawo yepayipi ukususa noma yikuphi ukugqwala, isikali noma ukungcola. Lokhu kungenziwa ngezindlela zokuhlanza ezenziwa ngomshini njengokuxubha ucingo noma ukugaya, noma ngokusebenzisa izihlanza zamakhemikhali. Ngokwengeziwe, ukujaha ukuphela kwepayipi kwakha i-groove ebekiwe evumela ukungena okungcono kwezinto zokuhlanza, ngaleyo ndlela kusiza inqubo yokufaka insimbi.

4. Ubuchwepheshe be-welding:

Indlela ye-Welding esetshenziswe ithinta kakhulu ikhwalithi yokuhlanganiswa. Ngokuya ngenqubo ye-welding esetshenzisiwe, amapharamitha afanele anjenge-welding yamanje, i-voltage, isivinini sokuhamba kanye nokufakwa kokushisa kufanele kugcinwe. Ikhono nokuhlangenwe nakho kwe-welder nakho kudlala indima ebalulekile ekufezeni i-wever enhle nenephutha. Amasu afana nokusebenza kahle kwe-elektrode, egcina i-arc ezinzile, futhi aqinisekise ukuhamba kwegesi eyanele kungasiza ukunciphisa izici ezinjenge-poriting noma ukuntuleka kokuhlanganiswa.

I-5. Ukuhlolwa kwe-Post-Weld:

Lapho nje ukushiswa kwe-welding sekuqediwe, kubalulekile ukwenza ukuhlola ngemuva kwemvula ukuthola noma yimaphi amaphutha noma amaphutha angahlehlisa ubuqotho bokuhlanganiswa. Izindlela zokuhlola ezingezona ezonakalisayo ezinjengokuhlola okubukwayo, ukuhlolwa kwedayi okufuywayo, ukuhlolwa kwamandla kazibuthe noma ukuhlolwa kwe-ultrasonic. Lokhu kuhlola kusiza ukubona izinkinga ezingaba khona futhi kuqinisekiswe ukuthi amalunga ahlanganisiwe ahlangabezana nokucaciswa okudingekayo.

Ekuphetheni:

 Ipayipi lensimbi lokufudumezakudinga ukucatshangelwa ngokucophelela kanye nokwenza kahle ukuqinisekisa ukuxhumana okusebenzayo nokwethembekile. Ngokuqonda izinhlobo ezahlukene zepayipi lensimbi, ukhetha inqubo efanelekile ye-welding, ukulungiselela ngokuphelele ipayipi, futhi usebenzise amasu afanele we-welding, futhi wenza ukuhlolwa okuphezulu kwe-welding, ungafinyelela ama-welds aqinile futhi aphezulu. Lokhu-ke kuyasiza ukuthuthukisa ukuphepha, ukuthembeka kanye nempilo yenkonzo yamapayipi ensimbi kuzicelo ezahlukahlukene lapho ziyizakhi ezibucayi.