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Kufuneka kuthathelwe ingqalelo ezi ngxaki ekusebenzeni kwe-welding ye-stainless steel welded pipes

  Umbhobho odityanisiweyo wensimbi engenasiciyenziwe ngentsimbi okanye umtya wentsimbi emva kokugxothwa ngumatshini kwaye ufe.Isitshixo kwisiqinisekiso somgangatho wensimbi engenastainless umbhobho odityanisiweyo ngumgangatho wezinto ezikrwada.Ngoko ke, zonke izinto eziluhlaza kumzi-mveliso ngaphambi kokusetyenziswa, kufuneka zihlolwe, kubandakanywa: ukubonwa kwembonakalo, ukulinganisa ububanzi kunye nobukhulu bulingana;Ukongeza, ukubunjwa kweekhemikhali kunye nokujonga uvavanyo lwe-tensile, lufanelekile phambi kwemveliso eqhelekileyo.Nangona kunjalo, kwimveliso yangempela yombhobho odibeneyo wensimbi engenasici, kaninzi kubonakala oku okanye loo ngxaki.Ke, ngaba uyazi ukuba zeziphi iingxaki ezithandwa yimibhobho yentsimbi engenastainless?Ziziphi izizathu zezi ngxaki kwimibhobho edityanisiweyo yensimbi engenasici?Apha umbhali wenza isisombululo nawe.

Kwi-welding operation ye-stainless steel welding pipe-factory, iingxaki ezinokuthi zenzeke zezi: i-welding seam engafanelekanga, i-welding engaphelelanga okanye itshiswa ngayo, i-cracks kunye ne-pores.Ukucacisa, yile:

1. I-weld engafanelekanga ngenxa yokukhethwa okungafanelekanga kweeparameters zenkqubo ye-welding okanye iteknoloji yokusebenza engasebenziyo.Ikhokelela kububanzi obuphezulu kunye obuphantsi be-weld yahlukile, kwaye emva koko yenza imilo ye-weld ayilungile kakhulu, umva we-weld i-concave, ebangela ukuba i-weld ibe buthathaka kakhulu, ukuze amandla e-weld abe buthathaka kakhulu. ayonelanga.

2. I-welding engaphelelanga okanye itshiswe nge-welding engaphelelanga ikakhulu ngenxa yezizathu ezilandelayo: okokuqala, i-current incinci kakhulu;Okwesibini, iteknoloji yokusebenza ayinazo izakhono, isantya se-welding sikhawuleza kakhulu, ukukhutshwa kwe-butt kuncinci;I-arc inde kakhulu okanye i-arc ayihambelani ne-weld.Ukuba i-welding wire kunye nesiseko sentsimbi ayixutywanga kunye okanye i-welding metal ayixutywanga kwindawo, inxalenye kufuneka ilungiswe ngexesha.Isizathu sokutshisa ngenxa ye-welding yangoku ngokugqithisileyo.Ubushushu bedama elinyibilikisiweyo buphezulu kakhulu.I-wire welding ayidityaniswanga ngexesha, i-strip butt clearance inkulu kakhulu;Isantya sokuwelda sicotha kakhulu.Ezi meko ziya kukhokelela ekubhobhozeni okukodwa okanye okuqhubekayo kwi-weld, ukuze amandla e-weld abe buthathaka, ukuze atshiswe.

3. Ukuqhekeka kunye neepores (1) Ingxaki kunye nefrikhwensi ephezulu kukuqhekeka.Ngokwesehlo esahlukileyo sokuqhekeka, iintanda ngokubanzi zinokwahlulwa zibe ziintanda ezishushu kunye neentanda ezibandayo.Ukuqhekeka okushushu kwenzeka ngenxa yokuba iintanda ezishushu ezinombala we-oxidation zenziwe ecaleni komda we-intergranular kwiqondo lobushushu lentsimbi engamanzi ngexesha lokuqiniswa okanye ngaphantsi kancinci kunomgca wesigaba esiqinileyo.Ngelixa ukuqhekeka okubandayo kukuqhekeka okubandayo kunye nepropathi ye-transgranular, ukwaphuka okuqaqambileyo kwaye akukho mbala oxidizing owenzeka kwinguqu yesigaba esiqinileyo, okanye ubukho be-hydrogen esasazekileyo, naphantsi kwesenzo soxinzelelo lwe-welding enciphayo ngokugqithisileyo ngexesha lokupholisa.Ukuba ukusetyenziswa kwentambo yokuwelda ayifikeleleki kwinqanaba, ukuwelda ixesha lokuhlala lobushushu lide kakhulu, okukhokelela kwi-oxidation, ukufudumeza nokukhula ngokugqithisileyo kobungakanani bekristale, izinto ngokwazo zinokungcola ngakumbi, okanye izinto ngokwazo kulula ukuziqinisa, kodwa kananjalo ithande ukuqhekeka.(2) I-Porosity yenzeka ngenxa yokuba kukho amabala e-oyile, ulusu lwe-oxide kunye nomhlwa phezu kwendawo ye-welding kunye neengcingo ze-welding, okanye i-welding kwindawo efumileyo, okanye i-argon gas iphantsi ngobunyulu, okanye ukhuseleko lwegesi ye-argon luhlwempuzekileyo, kunye nokutyhidiweyo. pool oxidized kwiqondo lobushushu eliphezulu, Splash kunye nezinye iimeko kulula ukuvelisa porosity.Ezi ngxaki zintathu zingentla zivame ukuvela ekusebenzeni kwe-welding ye-stainless steel welding tube abavelisi.


Ixesha lokuposa: Dec-15-2021