I-A252 IBANGA LESI-2 uMbhobho weNtsimbi wemibhobho yerhasi ephantsi komhlaba

A252 IBANGA 2 Umbhobho weNtsimbi wemibhobho yerhasi yangaphantsi komhlaba obonakalisiweyo

Inkcazelo emfutshane:

Xa kuziwa ekufakeni umbhobho werhasi ophantsi komhlaba, enye yezona zinto zibalulekileyo kukukhethwa kwendlela ye-welding yokudibanisa imibhobho.Ukuwelda kwe-Arc ye-Helical (HSAW) bubuchule bokuwelda obudumileyo obusetyenziselwa ukudibanisa umbhobho wentsimbi we-A252 weBanga lesi-2 kufakelo lombhobho werhasi ophantsi komhlaba. Le ndlela inika iingenelo ezininzi, kubandakanywa ukusebenza kakuhle kwe-welding, ukuthembeka kwesakhiwo, kunye nokuthembeka kwexesha elide.

Thumela i-imeyile kuthi

Iinkcukacha zeMveliso

Iithegi zeMveliso

Xa kuziwa ekufakeni umbhobho werhasi ophantsi komhlaba, enye yezona zinto zibalulekileyo kukukhethwa kwendlela ye-welding yokudibanisa imibhobho.Ukuwelda kwe-Arc ye-Helical(HSAW) bubuchule bokuwelda obudumileyo obusetyenziselwa ukudibanisa umbhobho wentsimbi we-A252 weBanga lesi-2 kufakelo lombhobho werhasi ophantsi komhlaba. Le ndlela inika iingenelo ezininzi, kubandakanywa ukusebenza kakuhle kwe-welding, ukuthembeka kwesakhiwo, kunye nokuthembeka kwexesha elide.

A252 Grade 2 umbhobho wentsimbiyenzelwe ngokukodwa ukusetyenziswa kwizicelo zoxinzelelo ezifana nokuthutha igesi yendalo. Le mibhobho yaziwa ngamandla ayo aphakamileyo okuqina kunye nokuxhathisa umhlwa, nto leyo eyenza ukuba ilungele ukufakelwa kwemibhobho yerhasi ephantsi komhlaba. Nangona kunjalo, inkqubo ye-welding ibalulekile ekuqinisekiseni ingqibelelo yonke kunye nokuphila ixesha elide kwimibhobho yegesi yendalo.

IPropati yoomatshini

	IBanga loku-1	IBanga lesi-2	IBanga lesi-3
Yield Point okanye isivuno amandla, min, Mpa(PSI)	205(30 000)	240(35 000)	310(45 000)
Amandla okuqina, min, Mpa(PSI)	345(50 000)	415(60 000)	455(66 0000)

Uhlalutyo lweMveliso

Intsimbi ayiyi kuba ngaphezu kwe-0.050% ye-phosphorus.

Ukwahluka okuvumelekileyo kubunzima kunye nemilinganiselo

Ubude bombhobho ngamnye buya kulinganiswa ngokwahlukeneyo kwaye ubunzima bayo abuyi kwahluka ngaphezu kwe-15% ngaphezulu okanye i-5% phantsi kobunzima bayo bethiyori, kubalwe kusetyenziswa ubude bayo kunye nobunzima bayo ngeyunithi yobude.

Idayamitha yangaphandle ayisayi kwahluka ngaphezu kwe-±1% ukusuka kwidayamitha yangaphandle echaziweyo

Ubunzima bodonga nakweyiphi na indawo abuyi kuba ngaphezu kwe-12.5% phantsi kobukhulu bodonga oluchaziweyo

Ubude

Ubude obubodwa obungakhethiyo: 16 ukuya ku-25ft (4.88 ukuya ku-7.62m)

Ubude obuphindwe kabini obungenamkhethe: ngaphezulu kwe-25ft ukuya kwi-35ft (7.62 ukuya kwi-10.67m)

Ubude obufanayo: ukwahluka okuvumelekileyo ±1in

Enye yeenzuzo eziphambili ze-spiral submerged arc welding kukusebenza kwayo okuphezulu. Le ndlela yenza ukuba amazinga aphezulu e-deposit afikelele, okukhokelela kwi-welding ekhawulezayo kunye nokwanda kwemveliso. Ngenxa yoko, ukufakwa kweimibhobho yerhasi ephantsi komhlabainokugqitywa ngexesha elifanelekileyo, ukunciphisa ukuphazamiseka kunye nexesha lokunciphisa.

Ukongeza, i-HSAW inomgangatho obalaseleyo wobume bentembeko. Inkqubo ye-welding idala ibhondi eqinile kwaye eqhubekayo phakathi kweepayipi zensimbi ze-A252 zeBanga lesi-2, ukuqinisekisa ukuba imibhobho inokumelana noxinzelelo lwangaphandle kunye neemeko zokusingqongileyo eziqhelekileyo kwiindawo eziphantsi komhlaba. Le mfezeko yolwakhiwo ibalulekile ekuthutheni ngokukhuselekileyo nangokuthembekileyo irhasi yendalo kumgama omde.

Ukongeza ekusebenzeni kakuhle kunye nokuthembeka kwesakhiwo, i-spiral submerged arc welding ibonelela ngokuthembeka kwexesha elide. Amalungu adityanisiweyo enziwe kusetyenziswa obu bugcisa anika ukuqina okugqwesileyo kunye nokuxhathisa umhlwa, ukuqinisekisa ukuba imibhobho yerhasi ephantsi komhlaba ihlala ikwimeko efanelekileyo kwixesha elide. Oku kuphila ixesha elide kubalulekile ekunciphiseni iindleko zokugcina kunye nokulungisa ezinxulumene nemibhobho yegesi yendalo.

Ngokubanzi, ukhetho lwendlela yokuwelda yokujoyina i-A252 yeBanga lesi-2 kwimibhobho yentsimbi kufakelo lwemibhobho yerhasi ephantsi komhlaba idlala indima ebalulekileyo kukhuseleko lulonke kunye nokusebenza kwenkqubo yokuhanjiswa kwerhasi. I-Spiral submerged arc welding ibonelela ngeenzuzo ezibalulekileyo ekusebenzeni kwe-welding, imfezeko yesakhiwo kunye nokuthembeka kwexesha elide, iyenza ibe yinto efanelekileyo yokuqinisekisa imfezeko yemibhobho yegesi ephantsi komhlaba.

Ngamafutshane, ukubaluleka kwe-A252 yeBanga lesi-2 yombhobho wentsimbi spiral ukuwelda i-arc entywilayo kufakelo lwemibhobho yerhasi ephantsi komhlaba ayinakujongelwa phantsi. Le ndlela ye-welding ibonelela ngezinto ezininzi ezintle, kubandakanya ukusebenza kakuhle kwe-welding, ukuthembeka kwesakhiwo, kunye nokuthembeka kwexesha elide. Ngokukhetha i-HSAW edityanisiweyo ye-A252 yeBanga lesi-2 ipayipi yentsimbi, abafakeli bemibhobho yegesi banokuqinisekisa ukuthuthwa kwegesi yendalo ekhuselekileyo kunye nethembekileyo kwiminyaka ezayo.