Iinkcukacha ezisemgangathweni

I-API 5L ibhekisa ngokubanzi kumgangatho wokwenziwa kombhobho womgca. Umbhobho womgca ubandakanya imibhobho yentsimbi engenamthungo kunye nemibhobho yentsimbi edityanisiweyo. Okwangoku, iintlobo zemibhobho yentsimbi esetyenziswa ngokuqhelekileyo kwimibhobho yeoli ibandakanya i-spiral submerged arc welded pipe (SSAW), i-straight seam edityanisiweyo yombhobho odityanisiweyo we-arc (LSAW), kunye nombhobho odityanisiweyo wokumelana nombane (ERW). Imibhobho yentsimbi engenamthungo ikhethwa ngokubanzi xa i-diameter yombhobho ingaphantsi kwe-152mm.

Umgangatho wesizwe we-GB / T 9711-2011 Iipayipi zensimbi ze-oyile kunye ne-gas industry yothutho lwemibhobho yokuthutha ihlanganiswe ngokusekelwe kwi-API 5L.

GB/T 9711-2011 icacisa iimfuno zokwenziwa kwemibhobho yentsimbi engenamthungo kunye nemibhobho yentsimbi edityanisiweyo kumanqanaba amabini okuchaza imveliso (PSL1 kunye nePSL2) esetyenziswa kwiinkqubo zothutho lwemibhobho ye-oyile kunye negesi yeshishini. Ngoko ke, lo mgangatho usebenza kuphela kwimibhobho yensimbi engenamthungo kunye nemibhobho yentsimbi edityanisiweyo yokuthutha ioli kunye negesi, kwaye ayisebenzi kwimibhobho yentsimbi.

Ibakala Steel

Amanqaku entsimbi ekrwada yeAPI 5Limibhobho yentsimbi ibandakanya GR.B,X42, X46, X52, X56, X60, X70, X80, njl. Amanqanaba entsimbi ahlukeneyo emibhobho yensimbi aneemfuno ezahlukeneyo zezinto ezibonakalayo kunye nemveliso, kodwa ukulingana kwekhabhoni phakathi kwamabakala ensimbi ahlukeneyo alawulwa ngokungqongqo.

Umgangatho woMgangatho

Kumgangatho we-API 5L wepayipi yensimbi, imigangatho yomgangatho (okanye iimfuno) zemibhobho yensimbi ihlulwe kwi-PSL1 kunye ne-PSL2. I-PSL sisishunqulelo senqanaba lokuchazwa kwemveliso.

I-PSL1 ibonelela ngeemfuno zomgangatho wombhobho wentsimbi ngokubanzi; I-PSL2 yongeza iimfuno ezisisinyanzelo zokwakheka kweekhemikhali, ukuqina kwenotshi, iipropathi zamandla kunye ne-NDE eyongezelelweyo.

Inqanaba lombhobho wensimbi we-PSL1 umbhobho wensimbi (igama elibonisa umgangatho wamandla wombhobho wensimbi, njenge-L290, i-290 ibhekisela kumandla amancinci okuvelisa umbhobho we-290MPa) kunye nebakala lensimbi (okanye ibakala, njenge-X42, apho I-42 imele ubuncinci bamandla okuvelisa okanye isangqa esiphakamileyo Ubuncinci amandla okuvelisa umbhobho wensimbi (kwi-psi) ifana neyombhobho yensimbi Iqulunqwe ngoonobumba okanye inani elixubekileyo leeleta kunye namanani abonisa izinga lamandla yombhobho wensimbi, kwaye ibakala lensimbi lihambelana nokubunjwa kweekhemikhali zensimbi.

Iipayipi zensimbi ze-PSL2 zenziwe ngeeleta okanye inhlanganisela yeeleta kunye namanani asetyenziselwa ukuchonga umgangatho wamandla wombhobho wensimbi. Igama lensimbi (ibakala lentsimbi) lihambelana nokubunjwa kweekhemikhali zentsimbi. Ikwabandakanya unobumba omnye (R, N, Q okanye M) yenza isimamva, esibonisa isimo sokuhanjiswa. Kwi-PSL2, emva kwemeko yokuhanjiswa, kukho kwakhona ileta S (indawo yenkonzo ye-asidi) okanye i-O (indawo yenkonzo yaselwandle) ebonisa ubume benkonzo.

Uthelekiso loMgangatho woMgangatho

1. Umgangatho womgangatho wePSL2 ungaphezulu kwalowo wePSL1. Ezi zigaba zimbini zokucaciswa azinayo kuphela iimfuno ezahlukeneyo zokuhlola, kodwa zineemfuno ezahlukeneyo zokubunjwa kweekhemikhali kunye neempawu zomatshini. Ngoko ke, xa u-odola ngokwe-API 5L, imimiselo kwikhontrakthi ayifanele ibonise kuphela iinkcukacha, amabakala ensimbi, njl. Ukongeza kwizalathi eziqhelekileyo, umgangatho wokucaciswa kwemveliso kufuneka uboniswe, oko kukuthi, i-PSL1 okanye i-PSL2. I-PSL2 ingqongqo kune-PSL1 malunga nokwakheka kweekhemikhali, iipropathi zokuqina, amandla empembelelo, uvavanyo olungonakalisi kunye nezinye izikhombisi.

2. I-PSL1 ayifuni ukusebenza kwempembelelo. Kuwo onke amabakala ensimbi ye-PSL2 ngaphandle kwe-X80 ibakala lensimbi, ubukhulu obupheleleyo 0℃ umyinge we-Akv: i-longitudinal ≥101J, i-transverse ≥68J.

3. Imibhobho yomgca kufuneka ivavanyelwe uxinzelelo lwe-hydraulic nganye, kwaye umgangatho awuchazi ukuba ukutshintshwa okungonakalisi koxinzelelo lwamanzi kuvunyelwe. Oku kwakhona umahluko omkhulu phakathi kwemigangatho ye-API kunye nemigangatho yaseTshayina. I-PSL1 ayifuni ukuhlolwa okungonakalisi, ngelixa i-PSL2 ifuna uhlolo olungonakalisi nganye nganye.