1.Iimfuno ezisisiseko zokubonakala kwee-welds ze-LSAW

Ngaphambi kovavanyo olungonakalisi lweImibhobho yentsimbi ye-LSAW, ukuhlolwa kwembonakalo ye-weld kuya kuhlangabezana neemfuno.Iimfuno eziqhelekileyo zokubonakala kwee-welds ze-LSAW kunye nomgangatho womphezulu we-welded joints zilandelayo: ukubonakala kwe-weld kufuneka kuqulunqwe kakuhle, kwaye ububanzi kufuneka bube yi-2 mm kwicala ngalinye phezu komda we-groove.Ukuphakama kwe-fillet ye-fillet weld kuya kuhambelana nemimiselo yoyilo kunye nemilo iya kuba yinguqu egudileyo.Umphezulu wejoyinti edityanisiweyo kufuneka ube:

(1) Ukuqhekeka, ukungaxutywanga, iipores, ukufakwa kwe-slag, kunye ne-splashes akuvumelekanga.

(2) Imibhobho, iintsimbi ezingenastainless kunye nealloy steel weld surfaces ezinobushushu boyilo obungaphantsi kwe-29 degrees aziyi kuba ne-undercuts.Olunye umbhobho weld weld umthungo ubunzulu kufuneka bube bukhulu kune 0.5mm, ubude obuqhubekayo be-undercut kufuneka bungabi ngaphezu kwe-100mm, kwaye ubude bebonke be-undercut kumacala omabini e-weld abukho ngaphezu kwe-10% yobude bubonke be-weld. .

(3) Umphezulu we-weld awuyi kuba ngaphantsi kobuso bombhobho.Ubude be-weld bead abukho ngaphezu kwe-3mm (ububanzi obukhulu beqela elidibeneyo elidibeneyo ukuya kwi-bevel yangasemva).

(4) Icala elingalunganga lomdibaniso odibeneyo aliyi kudlula i-10% yobukhulu bodonga kwaye aluyi kudlula i-2 mm.

2.Uvavanyo lomphezulu ongonakalisi

Umgaqo wendlela yokuvavanya engonakalisiyo kumphezulu we-LSAW wentsimbi yombhobho: uvavanyo lwemagnethi lomgubo kufuneka lusetyenziswe kumbhobho wensimbi we-ferromagnetic;uvavanyo lokungena kufuneka lusetyenziselwe umbhobho wentsimbi ongeyo-ferromagnetic.Ukudibanisa i-welded kunye nokuthambekela kokulibazisa ukuqhekeka, ukuhlolwa komhlaba ongonakalisi kuya kwenziwa emva kokuba i-welding ipholile ixesha elithile;kumalungu adityanisiweyo anomdla wokuphinda atshise ukuqhekeka, ukuhlolwa komhlaba ongonakalisi kuya kwenziwa kanye emva kwe-welding kwaye emva kokunyanga kobushushu.Ukusetyenziswa kovavanyo olungonakalisi komhlaba lwenziwa ngokweemfuno eziqhelekileyo.Izinto zobhaqo kunye nezicelo ziqhelekile ngolu hlobo lulandelayo:

(1) Ukuhlolwa komgangatho wendawo yangaphandle yesixhobo sombhobho.

(2) Ukufunyanwa kweziphene zomphezulu we-butt welds ezibalulekileyo.

(3) Ukuhlolwa kweziphene zomphezulu we-fillet welds ezibalulekileyo.

(4) Ukufunyaniswa kwesiphene somphezulu wamalungu adityanisiweyo okubaluleka kwe-socket welding kunye nemibhobho yesebe ye-jumper tee.

(5) Ukufunyanwa kwesiphene sobuso emva kokugoba kombhobho.

(6) Izinto eziphathekayo zicinywa kwaye i-groove ifunyenwe ngokudibeneyo edibeneyo.

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(8) I-weldment enamacala amabini ichaza ukuhlolwa kweengcambu emva kokuba iingcambu zicocwe.

(9) Xa i-welding ye-welding kumbhobho we-alloy enomkhuba wokuqina inqunyulwa ngumlilo we-oxyacetylene, isiphene sesahlulo sokusila sifunyenwe.

3.Ukubonwa kwemitha kunye novavanyo lwe-ultrasonic

Ezona zinto ziphambili zokufunyaniswa kwemitha kunye novavanyo lwe-ultrasonic ngamalunga ezimpundu zemibhobho yentsimbi yomthungo othe tye kunye namalungu ezimpundu zofakelo lwemibhobho edityanisiweyo.Iindlela zokuvavanya ezingonakalisi zikhethwa ngokwamaxwebhu oyilo.Ukufumana i-welded joints of titanium, i-aluminium kunye ne-aluminium alloys, i-alloys yobhedu kunye ne-copper, i-nickel kunye ne-nickel alloys, indlela yokukhangela i-radiation kufuneka isetyenziswe.Kwi-welds enomdla wokulibazisa ukuqhekeka, ukuhlolwa kwe-ray kunye nokuhlolwa kwe-ultrasonic kuya kwenziwa emva kokuba i-welding ipholile ixesha elithile.Xa umbhobho oyintloko kwi-casing ine-weld ye-girth, i-weld iya kusetyenziswa ngokuhlolwa kwe-ray ye-100%, kwaye umsebenzi ofihliweyo unokuqhutyelwa emva kokuba uxinzelelo lovavanyo ludluliselwe.Amalungu adityanisiweyo kumbhobho agqunywe yiringi yokuqinisa okanye ipadi yokuxhasa iya kuvavanywa nge-100% yeray-ray kwaye iya kugqunywa emva kokuphumelela uvavanyo.Kwii-welds ezichazwe kuhlolo oluphakathi lwe-welding, uvavanyo olungonakalisi luya kwenziwa emva kokuhlolwa okubonakalayo.Uvavanyo lweRadiographic kunye ne-ultrasonic luya kwenziwa emva kovavanyo olungonakaliyo lomphezulu.

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