Njengolona hlobo luyingozi kakhulu lwe-welding defect, ii-welding cracks zichaphazela kakhulu ukusebenza, ukhuseleko kunye nokuthembeka kwezakhiwo ezidibeneyo. Namhlanje, ndiya kukwazisa enye yeentlobo zokuqhekeka - i-lamellar cracks.
Izixhobo zokuwelda iXinfa zineempawu zomgangatho ophezulu kunye nexabiso eliphantsi. Ngeenkcukacha, nceda undwendwele:Abavelisi beWelding & Cutting-China Welding & Cutting Factory & Suppliers (xinfatools.com)
01
Ukubandakanywa okungezona isinyithi. Ngethuba lokujikeleza kweeplate zetsimbi, ezinye izinto ezingenayo i-metallic inclusions (ezifana ne-sulfides kunye ne-silicates) kwintsimbi zixutywe zibe yimichilo ehambelana nolwalathiso lokujikeleza, okubangelwa ukungafani kwiipropati ze-mechanical zensimbi. Ukubandakanywa zizinto ezinokubakho zokukrazula kwe-lamellar kwizakhiwo ezidibeneyo kwaye zikwangunobangela oyintloko wokukrazula kwe-lamellar.
02
Uxinzelelo lokuzibamba. Ngenxa yempembelelo ye-welding thermal cycle, amandla okuthintela aya kubonakala kwi-joint welded. Kwimilo ye-T enikeziweyo kunye nomnqamlezo odibeneyo wepleyiti ejiyileyo, phantsi komqathango wokuba iiparamitha ze-welding zihlala zingatshintshi, kukho uxinzelelo olubalulekileyo lokuthintela okanye ukugoba ukugoba. Amandla, xa likhulu kunolu xabiso, ukukrazula kwe-lamellar kunokwenzeka ukuba kwenzeke.
03
Ukusasazwa kwe-hydrogen. IHydrojeni yinto ekhuthaza ukuqhekeka. Ngenxa yokusasazwa kunye nokudibanisa i-hydrogen kwiimolekyuli, uxinzelelo lwendawo lukhula ngokukhawuleza. Xa i-hydrogen iqokelela ekupheleni kwezinto ezifakiweyo, ibangela ukuba i-non-metallic inclusions ilahlekelwe ukunamathela kunye nesinyithi kwaye ikhuphe i-inclusions esondeleyo. Intsimbi ibonisa iimpawu ze-hydrogen-induced fracture kwi-fracture surface.
04
Iimpawu zezinto ezisisiseko. Nangona i-inclusions iyona nto ibangela ukukrazula kwe-lamellar, iimpawu ze-mechanical zetsimbi nazo zinempembelelo ebalulekileyo kwi-lamellar tearing. Ukuqina kweplastiki yentsimbi kumbi, kwaye iintanda ziyakwazi ukwanda, oku kuthetha ukuba ukukwazi ukuxhathisa ukukrazuka kwe-lamellar kubi.
Ukuze kuthintelwe ukwenzeka kokuqhekeka kwe-lamellar, ukuyila kunye nenkqubo yokwakha ikakhulu ukuphepha uxinzelelo lwe-Z kunye noxinzelelo loxinzelelo. Amanyathelo athile alandelayo:
1. Ukuphucula ukudityaniswa koyilo kunye nokunciphisa ukuzibamba. Amanyathelo athile abandakanya: ukwandisa isiphelo se-arc yokubetha ipleyiti ukuya kubude obuthile ukukhusela ukuqhekeka; ukutshintsha i-weld layout ukuguqula isalathiso soxinzelelo lwe-weld shrinkage, ukutshintsha ipleyiti ethe nkqo ye-arc ibe yipleyiti ethe tye ye-arc ebethayo, ukutshintsha indawo ye-weld, Ukwenza ulwalathiso olupheleleyo loxinzelelo lokudityaniswa okuhambelanayo ukuya kumaleko aqengqelekayo kunokuphucula kakhulu i-lamellar. ukuxhathisa kweenyembezi.
2. Yamkela iindlela ezifanelekileyo ze-welding. Kuyinzuzo ukusebenzisa iindlela ze-welding eziphantsi kwe-hydrogen, ezifana ne-gas shielded welding kunye ne-arc welding ephantsi kwamanzi, enomkhwa omncinci wokubanda kwaye inenzuzo ekuphuculeni ukuchasana nokukrazula kwe-lamellar.
3. Sebenzisa izixhobo ezihambelana ne-welding ezisezantsi. Xa isinyithi se-weld sinomlinganiselo ophantsi wesivuno kunye ne-ductility ephezulu, kulula ukugxininisa ubunzima kwi-weld kunye nokunciphisa uxinzelelo kwindawo echaphazelekayo yokushisa yesiseko sesinyithi, esinokuphucula ukuxhathisa ukukrazula kwe-lamellar.
4. Ngokubhekiselele ekusebenziseni iteknoloji ye-welding, i-surfacing surface isolation layer isetyenziswa; I-welding ye-symmetrical isetyenziselwa ukulungelelanisa ukusabalalisa ukuxhatshazwa kunye nokunciphisa uxinzelelo loxinzelelo.
5. Ukuze kuthintelwe iinyembezi ze-lamellar ezibangelwa ukuqhekeka okubandayo, ezinye iindlela zokuthintela ukutshatyalaliswa okubandayo kufuneka zamkelwe kangangoko kunokwenzeka, njengokunyusa ngokufanelekileyo ukufudumala kwangaphambili, ukulawula ukushisa kwe-interlayer, njl.; Ukongeza, iindlela zokunciphisa uxinzelelo ezifana nokuthotywa okuphakathi nazo zingamkelwa.
6. Sinokusebenzisa inkqubo yokudibanisa imilenze encinci ye-welding kunye ne-multi-pass welding ngokulawula ubungakanani be-weld.
Ixesha lokuposa: Nov-16-2023
