I-welding yamapayipi ensimbi engagqwali ngokuvamile iqukethe i-root welding, i-welding yokugcwalisa kanye ne-cover welding. I-welding engezansi yepayipi yensimbi engagqwali iyingxenye ebaluleke kakhulu ye-stainless steel pipe welding. Ayihlobene kuphela nekhwalithi yephrojekthi, kodwa futhi ihlobene nokuqhubeka kwephrojekthi. Njengamanje, i-welding emuva yepayipi yensimbi engagqwali ihlukaniswe ngezinqubo ezimbili: ukugcwaliswa kwe-back-filling kanye ne-non-argon. Ukuvikela emuva okugcwele i-Argon kuhlukaniswe ngocingo oluqinile + inqubo ye-TIG kanye nocingo oluqinile + TIG + inqubo yephepha elincibilika emanzini; emuva ngaphandle kokuvikeleka okugcwele i-argon ihlukaniswe yaba isisekelo se-flux-coreed wire kanye nenduku yokushisela (intambo eboshwe) isekela ukushisela kwe-TIG.
Ukushisela okuphansi kwensimbi engagqwali kuvame ukusebenzisa inqubo ye-TIG. Ngokwesimo sangempela esizeni, singasebenzisa izindlela ezine ezilandelayo zokushisela phansi.
01. Indlela yokuvimbela ukungena komoya kanye nokuvikela ngokusebenzisa amabhodi okuvimbela ngemuva (okungukuthi, ucingo oluqinile lwe-welding + TIG)
Lapho ipayipi yensimbi engagqwali yenziwe ngaphambili, i-welding joint ngokuvamile ingashintshwa futhi ihlanganiswe, futhi umoya omncane ulula kakhulu. Ngalesi sikhathi, i-blocking plate ivame ukusetshenziselwa ukuvimba nokufaka umoya ezinhlangothini zombili zejoyinti yokushisela epayipini ukuze kuvikelwe ukushisela okuphansi, futhi ngesikhathi esifanayo, uhlangothi olungaphandle luvalwa ngendwangu enamathelayo. ukuvinjwa.
Lapho i-welding, inqubo yokungenisa umoya kusengaphambili nokumisa igesi kamuva kufanele yamukelwe. Indwangu yangaphandle enamathelayo idabukile ngenkathi ishiselwa. Njengoba ipuleti lokuvimbela lakhiwe ngerabha nensimbi emhlophe, akulula ukulinyazwa, ngakho le ndlela yokushisela ingaqinisekisa kahle ingaphakathi le-weld. Igcwele i-argon gas futhi uqinisekise ubumsulwa bayo, ukuze uqinisekise ngokuphumelelayo ukuthi insimbi ngaphakathi kwe-weld ayinayo i-oxidized, futhi uqinisekise ikhwalithi yokusekelwa kwe-weld.
02. Sebenzisa kuphela iphepha elincibilikayo noma inhlanganisela yephepha elincibilikayo kanye nebhodi lokuvimbela ukuze uvimbele futhi uvikele ukungena komoya (okungukuthi ucingo oluqinile lwe-welding + TIG + iphepha elincibilika emanzini)
Lapho ichweba elingaguquki lepayipi lensimbi engagqwali lifakiwe futhi lishiselwe, kunzima ukufaka umoya ohlangothini lwangaphakathi, futhi ezinye izinhlangothi kulula ukuvinjelwa. Kulokhu, iphepha elincibilikayo emanzini + ipuleti lokuvimbela lingasetshenziselwa ukuvala uphawu. Okusho ukuthi, uhlangothi olulula ukungena komoya futhi olulula ukususa luvalwe ngebhodi lokuvimbela, futhi uhlangothi olungelula ukungena umoya futhi okunzima ukususa ibhodi lokuvimbela luvinjwe ngephepha elincibilikayo emanzini.
Lapho welding insimbi engagqwali fixed port, ezimweni eziningi, ngeke kube khona umoya ezinhlangothini zombili weld. Ngalesi sikhathi, indlela yokuqinisekisa ukuvikelwa kokugcwalisa i-argon ngaphakathi kwe-weld kuba yinkinga enzima. Ekwakhiweni kwangempela esizeni, sisebenzisa amanzi ancibilikayo Indlela yokufaka uphawu ngephepha, ukufaka umoya kusuka enkabeni ye-weld seam, nokunamathisela ngaphandle ngendwangu yokunamathisela kuxazulule ngempumelelo izinkinga ezingenhla.
Lapho iphepha elincibilika emanzini lisetshenziselwa ukuvala umoya wokungena komoya, njengoba umoya wokungenisa umoya usuka enkabeni ye-weld seam, enqubweni yokugcina yokuvala, ishubhu lokungenisa umoya kufanele likhishwe ngokushesha, futhi i-argon esele ngaphakathi kufanele isetshenziselwe ukuvikela, futhi phansi kufanele kuqedwe ngokushesha futhi umlomo kufanele uvalwe.
Ngale ndlela, kufanele kuqashelwe ukuthi iphepha elincibilikayo emanzini kufanele lifakwe kabili, futhi kufanele linamathiselwe kahle, ngaphandle kwalokho iphepha elincibilikayo emanzini lizolimala kalula futhi liwe, futhi i-weld yangaphakathi izolahlekelwa ukuvikelwa i-argon gas, kanye ne-oxidation kuzokwenzeka, okubangela ukuthi i-weld inqunywe futhi ivulwe kabusha. I-Welding ayikwazi ukuqinisekisa ikhwalithi yokushisela, kodwa futhi ithinta kakhulu isikhathi sokwakha, ngakho-ke ukuhlolwa okuqinile kufanele kwenziwe ngaphambi kokushisela, futhi iphepha elincibilikayo emanzini kufanele linamathiselwe.
Ezindaweni eziningi zokwakha, samukele le ndlela yokushisela yokusekela, ikhwalithi yayo ingaqinisekiswa ngokuphumelelayo, futhi kunzima nokwakha, ngakho-ke abashiseli abaqaphile nabanekhono kufanele bakhethwe kulo msebenzi.
03. Uhlangothi olungemuva aluvikelwe igesi ye-argon, futhi kusetshenziswa inqubo ye-flux cored wire + TIG
Le ndlela isetshenziswe ezweni lakithi iminyaka eminingana, futhi izintambo zokushisela ezinama-flux-cored ezifana ne-E308T1-1, E308LT1-1, E309T1-1, E309LT1-1, 347T1-1, E316T1-1, E316LT1-1 ziye zakhiqizwa. , futhi isetshenziswe emkhakheni I-welding izuze izinzuzo ezingcono zezomnotho.
Njengoba uhlangothi lwangemuva lungagcwaliswa nge-argon, izinzuzo zalo zisobala, ezifana nokusebenza okuphezulu, ukulula, nezindleko eziphansi, futhi kufanelekile ukufakwa endaweni yokwakha. Kodwa-ke, ngenxa yezici zayo zesakhiwo, i-flux-cored welding wire inezidingo eziphezulu zama-welders ngesikhathi sokusebenza. Ijubane layo lokuphakela ngocingo liyashesha futhi ukunemba kokuphakela ngocingo kuphezulu, ngakho kunzima ukuyiqonda. Abashiseli kufanele baqeqeshwe ngokukhethekile futhi babe nekhono ngaphambi kokuba bahlanganyele ekushiseleni. E-Nanjing Yangba nasezindaweni zokwakha zakwamanye amazwe, siyixazulule ngempumelelo inkinga yokuthi i-argon ayikwazi ukushaywa umoya echwebeni lomhlangano kanye nechweba lokulungisa ngokusebenzisa le ndlela.
04. Uhlangothi olungemuva aluvikelwe igesi ye-argon, futhi ucingo lokushisela oluhlanganisiwe (i-self-protected flux-coreed welding wire) + inqubo ye-TIG isetshenziswa.
Ngawo-1990, i-Kobelco nezinye izinkampani zase-Japan zakha izintambo zokushisela eziphansi. Eminyakeni yamuva nje, izwe lami liye lasungula izintambo zokushisela ezansi zensimbi ezingenasici (okungukuthi, izintambo zokushisela eziboshwe, ezifana ne-TGF308, TGF308L, TGF309, TGF316L, TGF347, njll.) , futhi yasetshenziswa ekwakhiweni kwangempela, futhi yazuza imiphumela emihle, sisebenzise ngempumelelo le ndlela kuphrojekthi yokwandisa umthamo kanye nokuguqula i-Wupec.
Indlela yokuvikela yocingo olusekela insimbi engagqwali + inqubo ye-TIG ukuthi i-weld yangemuva ivikelwe ukusabela kwe-metallurgical phakathi kwe-slag ekhiqizwe ukuncibilika kwe-welding wire kanye nezakhi zayo ze-alloy, futhi i-weld yangaphambili ivikelwe yi-argon, i-slag ne-alloy elements. .
Uma usebenzisa le nqubo, amaphuzu okusebenza alandelayo kufanele anakwe: Ngesikhathi senqubo yokuthungatha, i-angle elungile phakathi kwesibambo se-welding, i-welding wire kanye ne-welding piece kufanele igcinwe. I-angle ekahle yangemuva yesibambo sesibambo sokushisela yi-70 ° -80 °, I-engeli ingu-15 ° -20 °; lawula kahle izinga lokushisa lechibi elincibilikisiwe, shintsha izinga lokushisa lechibi elincibilikisiwe ngokushintsha i-engeli phakathi kwesibambo sokushisela kanye ne-weldment, ukushintsha isivinini sokushisela, njll., ukuze uqinisekise ukuthi umumo we-weld muhle (ububanzi okufanayo, akukho concave, Convexity nezinye amaphutha);
Ngesikhathi sokusebenza, i-current kufanele ibe nkulu kancane kune-welding core core wire, futhi isibambo sokushisela kufanele sinyakaziswe kancane ukuze kusheshiswe ukuhlukaniswa kwensimbi encibilikisiwe ne-coating encibilikisiwe, ekulungele ukubuka ichibi elincibilikisiwe nokulawula ukuthi ukungena qeda; lapho ugcwalisa ucingo lwe-welding, kungcono ukuyithumela ku-1/2 yechibi elincibilikisiwe, bese uyicindezela kancane ngaphakathi ukuze uqinisekise ukungena kwezimpande nokuvimbela ukungena;
Phakathi nenqubo yokufaka i-welding, ucingo lwe-welding kufanele ludliwe futhi lukhishwe njalo, futhi ucingo lwe-welding kufanele lube ngaphansi kokuvikelwa kwegesi ye-argon, ukuze kuvinjwe ukuphela kocingo lwe-welding ukuthi lungabi ne-oxidized futhi luthinte izinga lokushisela; Ukushisela indawo kufanele kugaywe kuze kufike ku-45°, futhi kuqashelwe ukukhubazeka okufana nama-arc craters kanye nemigodi eshwabene lapho kuvalwa i-arc.
Intambo yokushisela ekhaviwe isetshenziselwa ukushisela okuphansi, futhi igesi ye-argon ayisetshenziswa ngaphakathi kwe-weld. Ukusebenza kwe-welder kulula futhi kuyashesha, kunezici zokusebenza kahle kakhulu kanye nezindleko eziphansi. Le ndlela isetshenziselwa ukushisela ingqikithi yamalunga angu-28 kanye namalunga aphinde asebenza kabusha, futhi izinga lokudlula lesikhathi esisodwa sokushisela liyi-100%), elifanele ukukhuthazwa nokusetshenziswa kwethu.
Izindlela ezine ezingenhla zokushisela insimbi engenasici zinezinzuzo zazo kanye nokubi. Ekwakhiweni kwangempela, akufanele sicabangele kuphela izindleko zokwakha, kodwa futhi izinga lokushisela kanye nenqubekelaphambili yokwakha ngokuvumelana nezimo ezithile esizeni, futhi sikhethe inqubo yokwakha enengqondo.
Isikhathi sokuthumela: Mar-15-2023
