Izimbangela zokugqwala kwegridi yensimbi engagqwali

Izimbangela zokugqwala kwegridi yensimbi engagqwali

1 Isitoreji esingafanele, ukuthutha kanye nokuphakamisa
Ngesikhathi sokugcina, ukuthuthwa nokuphakanyiswa, igridi yensimbi engagqwali izogqwala lapho ithola imihuzuko entweni eqinile, ukuthintana nezinsimbi ezingafani, uthuli, uwoyela, ukugqwala nokunye ukungcola. Ukuxuba insimbi engagqwali nezinye izinto kanye namathuluzi angafanele okugcina kungangcolisa kalula ingaphezulu lensimbi engagqwali futhi kubangele ukugqwala kwamakhemikhali. Ukusetshenziswa okungalungile kwamathuluzi okuthutha nezinto ezilungiswayo kungabangela amaqhubu kanye nokuklwebheka ebusweni bensimbi engagqwali, ngaleyo ndlela kucekele phansi ifilimu ye-chromium engaphezulu yensimbi engagqwali futhi kwakhe ukugqwala kwe-electrochemical. Ukusetshenziswa okungalungile kwama-hoist nama-chucks kanye nokusebenza okungalungile kwenqubo nakho kungabangela ifilimu engaphezulu ye-chromium yensimbi engagqwali ukuthi ibhujiswe, kubangele ukugqwala kwe-electrochemical.
2 Ukukhipha kanye nokwenza izinto ezingavuthiwe
Izinto zamapuleti ensimbi agayiwe zidinga ukucutshungulwa zibe yinsimbi eyisicaba ukuze zisetshenziswe ngokuvula nokusika. Ekucutshungulweni okungenhla, ifilimu ye-chromium-rich oxide passivation engaphezulu kwe-grating yensimbi engagqwali iyabhujiswa ngenxa yokusikwa, ukugoqa, ukushisa, ukukhishwa kwesikhunta, ukuqina kokusebenza okubandayo, njll., okubangela ukugqwala kwe-electrochemical. Ngaphansi kwezimo ezivamile, indawo eveziwe ye-substrate yensimbi ngemva kokucekelwa phansi kwefilimu izosabela nomkhathi ukuze izilungise, yenze kabusha ifilimu ye-chromium-rich oxide passivation, futhi iqhubeke nokuvikela i-substrate. Nokho, uma ingaphezulu lensimbi engagqwali lingahlanzekile, lizosheshisa ukugqwala kwensimbi engagqwali. Ukusika nokushisa ngesikhathi senqubo yokusika kanye ne-clamping, ukushisa, ukukhipha isikhunta, ukuqina okubandayo okusebenzayo ngesikhathi sokwenza inqubo kuzoholela ekushintsheni okungalingani kwesakhiwo futhi kubangele ukugqwala kwe-electrochemical.
3 Ukufaka ukushisa
Phakathi nenqubo yokukhiqiza igridi yensimbi engagqwali, lapho izinga lokushisa lifinyelela ku-500 ~ 800℃, i-chromium carbide ensimbi engagqwali izokwehla igudle umngcele wokusanhlamvu, futhi ukugqwala okuphakathi nendawo kuzokwenzeka eduze komngcele wokusanhlamvu ngenxa yokuncipha kokuqukethwe kwe-chromium. I-thermal conductivity ye-austenitic stainless steel cishe i-1/3 yaleyo ye-carbon steel. Ukushisa okukhiqizwa ngesikhathi sokushisela akukwazi ukuhlakazwa ngokushesha, futhi ukushisa okukhulu kunqwabelana endaweni yokushisela ukuze kwandiswe izinga lokushisa, okubangela ukugqwala kwe-intergranular ye-weld yensimbi engenasici kanye nezindawo ezizungezile. Ngaphezu kwalokho, ungqimba lwe-oxide olungaphezulu lulimale, okulula ukubangela ukugqwala kwe-electrochemical. Ngakho-ke, indawo yokushisela ijwayele ukugqwala. Ngemva kokuphothulwa kokusebenza kwe-welding, ngokuvamile kuyadingeka ukupholisha ukubukeka kwe-weld ukuze kukhishwe umlotha omnyama, i-spatter, i-welding slag kanye neminye imidiya ejwayele ukugqwala, futhi ukwelashwa kwe-pickling kanye ne-passivation kwenziwa kwi-arc weld eveziwe.
4. Ukukhetha okungalungile kwamathuluzi kanye nokwenziwa kwenqubo ngesikhathi sokukhiqiza
Enqubweni yokusebenza yangempela, ukukhetha okungafanele kwamanye amathuluzi nokusebenza kwenqubo nakho kungaholela ekugqwaleni. Isibonelo, ukususwa okungaphelele kwe-passivation ngesikhathi se-weld passivation kungaholela ekugqwaleni kwamakhemikhali. Amathuluzi angalungile akhethiwe lapho kuhlanzwa i-slag ne-spatter ngemva kokushisela, okuholela ekuhlanzeni okungaphelele noma ukulimala kokusebenza komzali. Ukugaya okungalungile kombala we-oxidation kubhubhisa ungqimba lwe-oxide engaphezulu noma ukunamathela kwezinto ezivame ukugqwala, okungaholela ekugqwaleni kwe-electrochemical.