I-ASTM A334IBanga lesi-6i-high-high-high, i-low-temperature carbon steel pipe kunye ne-carbon content ephezulu ye-0.30%, umxholo we-manganese we-0.29-1.06%, ubuncinci be-tensile amandla we-415Mpa (60ksi), kunye namandla okuvelisa i-240Mp (35ksi).
Isetyenziswa kakhulu kwindawo yoncedo lwerhasi yendalo enyibilikisiweyo, ubunjineli bepolar, kunye netekhnoloji yesikhenkcisi, iqhelana neendawo ezinobushushu obuphantsi kakhulu.
I-ASTM A334lubalulo olusemgangathweni olungenamthungo kunye nekhabhoni edibeneyo kunye ne-alloy steel tubing kwizicelo ze-cryogenic.
Kukho amabakala amaninzi ukuhlangabezana neemfuno ezahlukeneyo.
IBakala 1, iBakala 3, iBakala 6, iBakala 7, iBakala 8, iBakala 9, neBakala 11.
IBanga loku-1kunye neBanga lesi-6 zombini yimibhobho ye-carbon steel.
I-ASTM A334 yeBanga lesi-6 ipayipi yensimbi inokuveliswa ngeenkqubo ezingenamthungo okanye ezidibeneyo.
Iinkqubo zokuwelda ziquka iindlela ezahlukeneyo ezifanaukuwelda ukumelana nombane (ERW)kwayeukuwelda kwe-arc emanzini (SAW).
Ngezantsi, yinkqubo yemveliso yeI-Longitudinal Submerged Arc Welding (LSAW).
Njengomvelisi weetyhubhu zetsimbi ezidityanisiweyo, siyakwazi ukuhlangabezana neemfuno ezithile zabathengi bethu abahlukeneyo, sinikezela ngoluhlu oluhlukeneyo lweenketho zemveliso ukuqinisekisa ukusebenza kakuhle kunye nomgangatho wesicelo ngasinye.
I-weld-piece ye-tubing ye-LSAW iphucula kakhulu amandla apheleleyo ombhobho, evumela ukuba imelane noxinzelelo oluphezulu.
Ukongeza, ifaneleke ngokufanelekileyo ukuveliswa kombhobho wentsimbi enobubanzi obukhulu kunye nengqindilili-engqindilili ehlangabezana neemfuno ze-ASTM A334 yeBanga lesi-6 kwiinkqubo ezinkulu zokuhanjiswa kwemizi-mveliso kunye nokuhanjiswa kwamandla, njengokwakhiwa kwerhasi enkulu yendalo engamanzi. LNG) izixhobo.
Kwangaxeshanye, ulawulo oluchanekileyo lwe-dimensional luqinisekisa iidayamitha zemibhobho engaguqukiyo kunye nobukhulu bodonga lokuphucula ukuthembeka koqhagamshelwano kunye nokuthintela ukuvuza kwiinkqubo zemibhobho.
Ziqhelanise ngokufudumeza kubushushu obufanayo obungekho ngaphantsi kwe-1550 °F [845 °C] kwaye uphole emoyeni okanye kwigumbi lokupholisa leziko elilawulwa ngumoya.
Ukuba ukucaphuka kuyafuneka, kuya kufuneka kuxoxwe.
Ukubunjwa kweekhemikhali ze-ASTM A334 yeBanga lesi-6 ipayipi yensimbi yenzelwe ukuqinisekisa iimpawu ezintle zomatshini kumaqondo okushisa aphantsi kunye nokuqina okwaneleyo kwinkonzo ethembekileyo phantsi kweemeko ezinzima.
| IBanga | C (Ikhabhoni) | Mn (Manganese) | P (Phosphorus) | S (Sulfure) | Si (Isilicon) |
| IBanga lesi-6 | ubuninzi 0.30 | 0.29-1.06 | ubuninzi 0.025 | ubuninzi 0.025 | umz 0.10 |
| Ngokucuthwa ngakunye nge-0.01 % carbon engaphantsi kwe-0.30 %, ukunyuka kwe-0.05 % manganese ngaphezu kwe-1.06 % kuya kuvunyelwa ukuya kubuninzi be-1.35 % manganese. | |||||
KwiBanga loku-1 okanye iBanga lesi-6, akuvumelekanga ukubonelela ngamabakala aloyiyo kuzo naziphi na izinto ngaphandle kwezo zifunekayo ngokucacileyo.Nangona kunjalo, kuvunyelwe ukongeza izinto eziyimfuneko kwi-deoxidation yensimbi.
Imifuniselo yempembelelo kumbhobho wentsimbi yeBanga lesi-6 iqhutywa kwi--45°C [-50°F] njengendlela yokuqinisekisa ukuqina kunye nokumelana nempembelelo yemathiriyeli kwiindawo ezinobushushu obuphantsi kakhulu.
Uvavanyo lwenziwe ngokukhetha amandla achaphazelekayo afanelekileyo ngokusekelwe kudonga lodonga lombhobho wensimbi.
Amaxabiso obude obuncinane obaliweyo kwi-1/32 nganye kwi-.[0.80 mm] ukuncipha kobunzima bodonga.
| IBanga | Rockwell | Brinell |
| I-ASTM A334 iBanga lesi-6 | B 90 | 190 |
Umbhobho ngamnye uya kuvavanywa ngokungonakaliyo ngombane okanye nge-hydrostatically ngokuhambelana ne-Specification A1016/A1016M.
Ngaphandle kokuba kuchazwe ngenye indlela kumyalelo wokuthenga, uhlobo lovavanyo oluza kusetyenziswa luya kuba kukhetho lomenzi.
Uvavanyo lokucaba
Uvavanyo lokudangala (iMibhobho engenamthungo)
Uvavanyo lweFlange (Iibhubhu ezidityanisiweyo)
Reverse Flattening Test
1. Amaziko eGesi yeNdalo eLiquefied (LNG).: Ngenxa yezinto ezihle kakhulu zokushisa okuphantsi, iBanga le-6 ipayipi yensimbi isetyenziswa kakhulu kwimveliso ye-LNG, indawo yokugcina kunye nokuthutha.Ezi zixhobo zifuna izinto ezigcina amandla aphezulu kunye nokuqina okulungileyo kumaqondo aphantsi kakhulu.
2. Iinkqubo zokuthutha i-oyile negesi: esetyenziselwa ukuthutha iihydrocarbon ezingamalwelo okanye ezinegesi, njengerhasi yepetroleum engamanzi (LPG) kunye nolunye ulwelo lobushushu obuphantsi kwindawo yobushushu obuphantsi.
3. Ubuchwepheshe befriji kunye neendawo zokugcina ezibandayo: Oku kusebenza nakwezinye iindawo zobuchwepheshe befriji, ezifana neenkqubo zokukhenkceza kunye nokugcinwa okubandayo ekuqhutyweni kokutya kunye nezinye iinkqubo zeekhemikhali ezifuna ukusebenza okuphantsi kobushushu.
4. Ubunjineli bencam yomhlaba: Kwiiprojekthi zobunjineli kwimimandla ye-polar, njengezikhululo zophando lwezenzululwazi kwi-Arctic okanye i-Antarctica, zisetyenziselwa ukwakha iinkqubo zokuhambisa ezizinzileyo nezithembekileyo kunye nezakhiwo ezimele zikwazi ukumelana namaqondo okushisa abandayo kunye neemeko ezinzima zokusingqongileyo.
5. Iinkqubo zokupholisa umoya kunye nabatshintshisi bobushushu: Kwakhona ngokuqhelekileyo kusetyenziswe kwiinkqubo ezinkulu zomoya kunye nokutshintshana kobushushu, ekufuneka zisebenze ngokufanelekileyo kumaqondo okushisa aphantsi ukuze kuqinisekiswe ukusebenza kakuhle kwenkqubo kunye nokhuseleko.
6. Ubunjineli bamandla kunye nezikhululo zamandla: Kwiiprojekthi zobunjineli zamandla akhethekileyo, njengeentlobo ezithile zezikhululo zamandla, iityhubhu zentsimbi zeBanga lesi-6 zingasetyenziselwa ukuphatha ulwelo okanye iigesi kumaqondo obushushu aphantsi ukuqinisekisa ukusebenza ngokukhuselekileyo nokusebenza kakuhle kwenkqubo.
EN 10216-4:P265NL: Isetyenziselwa ikakhulu kwiinqanawa zoxinzelelo lwe-cryogenic kunye neenkqubo zemibhobho ye-cryogenic, inobunzima obuhle kunye namandla kwaye ifanelekile ukusetyenziswa kwiindawo ze-cryogenic.
I-DIN 17173:TTSt41N: Yenzelwe izicelo zobushushu obuphantsi, ibonelela ngentsebenzo encomekayo yobushushu obuphantsi kwaye iqhele ukusetyenziswa kwisixhobo kunye nemibhobho efuna iindawo zokusebenza ezinobushushu obuphantsi kakhulu.
I-JIS G3460:STPL46: Isetyenziselwa iinkqubo zothutho lwemibhobho kwiindawo ezinobushushu obuphantsi, obukwaziyo ukumelana neempembelelo ezithile zobushushu obuphantsi kunye noxinzelelo.
GB/T 18984:09Mn2V: Esi sixhobo sikhethekileyo ekwenziweni kweetyhubhu zentsimbi ezingenamthungo ukuze zisetyenziswe kwiindawo ezinobushushu obuphantsi, kunye nokuqina okuhle kobushushu obuphantsi kunye nokumelana nokuqhekeka.
Xa ukhetha ezi zixhobo ezilinganayo, kubalulekile ukuqinisekisa ukuba ukubunjwa kweekhemikhali kunye neempawu zoomatshini zihlangabezana nemilinganiselo yesicelo esifunekayo kunye neemfuno zokusebenza.
Ezi parameters kufuneka zithelekiswe ngokweenkcukacha kwaye uvavanyo olongezelelweyo kunye neenkqubo zokuqinisekisa zingafuneka ukuze kuqinisekiswe ukufaneleka kunye nokusebenza kwezinto eziphathekayo.
Ukususela ekusekweni kwayo ngo-2014, iBotop Steel ibe ngumthengisi ohamba phambiliumbhobho wentsimbi yekhabhonieMntla China, eyaziwa ngenkonzo egqwesileyo, iimveliso ezikumgangatho ophezulu, kunye nezisombululo ezibanzi.Inkampani inikezela ngeendidi zemibhobho ye-carbon steel kunye nemveliso ehambelana nayo, kubandakanywa i-seamless, i-ERW, i-LSAW, kunye ne-SSAW ipayipi yensimbi, kunye nomgca opheleleyo wokufakelwa kwemibhobho kunye neeflange.
Iimveliso zayo ezikhethekileyo zikwabandakanya i-alloys ephezulu kunye ne-austenitic stainless steels, elungiselelwe ukuhlangabezana neemfuno zeeprojekthi ezahlukeneyo zepayipi.
