I-hot-dip galvanizing ingenye yezindlela ezibalulekile zokunqanda ukugqwala ezivame ukusetshenziswa ekwelapheni okungaphezulu kwegridi yensimbi. Endaweni egqwalayo, ukujiya kongqimba olunathayela lwe-grating yensimbi kunomthelela oqondile ekumelaneni nokugqwala. Ngaphansi kwezimo zamandla okubopha okufanayo, ubukhulu be-coating (inani lokunamathela) lihlukile, futhi isikhathi sokumelana nokugqwala sihlukile. I-Zinc isebenza kahle kakhulu njengesivikelo sesisekelo sensimbi. Amandla e-electrode e-zinc aphansi kunalawo ensimbi. Lapho kukhona i-electrolyte, i-zinc iba i-anode futhi ilahlekelwa ama-electron futhi i-corrodes ngokukhethayo, kuyilapho isisekelo se-grating sensimbi siba i-cathode. Ivikelwe ekugqwaleni ngokuvikelwa kwe-electrochemical kongqimba olunamanzi. Ngokusobala, uma ukunamathela kuba mncane, isikhathi sokumelana nokugqwala siba mfishane, nesikhathi sokumelana nokugqwala siyakhula njengoba ukushuba kokumboza kwanda. Kodwa-ke, uma ubukhulu be-coating bukhulu kakhulu, amandla okubopha phakathi kwe-coating ne-substrate yensimbi azokwehla kakhulu, okuzonciphisa isikhathi sokumelana nokugqwala futhi akubizi ngokwezomnotho. Ngakho-ke, kunenani elifanele lokujiya kwe-coating, futhi akukuhle ukushuba kakhulu. Ngemva kokuhlaziya, ukuze kusetshenziswe izingxenye ezishisayo zensimbi ezicwebezelayo zensimbi ecwebezelayo ezicaciswe ngendlela ehlukile, ukujiya koqweqwe olufanele kufaneleka kakhulu ukuze kuzuzwe isikhathi eside kakhulu sokumelana nokugqwala.
Izindlela zokuthuthukisa ukujiya kwe-coating
1. Khetha izinga lokushisa elingcono kakhulu le-galvanizing
Indlela yokulawula ukushisa kwe-galvanizing ye-grating yensimbi kubaluleke kakhulu ukuqinisekisa nokuthuthukisa ikhwalithi yokugqoka. Ngemva kweminyaka yokuzijwayeza ukukhiqiza, sikholelwa ukuthi kuhle ukulawula izinga lokushisa elishisayo le-hot-dip galvanizing ku-470 ~ 480℃. Uma ukushuba kwengxenye epuletiwe kungu-5mm, ukujiya kokumboza kungu-90 ~ 95um (izinga lokushisa elizungezile lingu-21~25(). Ngalesi sikhathi, i-hot-dip galvanized steel grating ihlolwa ngendlela ye-copper sulfate. Imiphumela ibonisa ukuthi: ukucwiliswa kucwiliswa izikhathi ezingaphezu kwezingu-7 ngaphandle kokudalula i-iron matrix eyisicaba (90 degrees) insimbi ye-galvanized ngaphezulu kwe-90 isikhathi; Uma izinga lokushisa lokucwiliswa kwe-zinc lingama-455 ~ 460 ℃, ukushuba kwe-coating kudlule inani elifanele Ngalesi sikhathi, nakuba imiphumela yokuhlola ukufana kwe-coating mihle (imvamisa icwiliswa izikhathi ezingaphezu kwezingu-8 ngaphandle kokudalula i-matrix), ngenxa yokwanda kwe-viscosity ye-zinc, i-viscosity ye-zinc iqinisekisa ngisho nokuguquguquka. Lapho izinga lokushisa lokucwiliswa kwe-zinc liku-510 ~ 520℃, ukujiya kokumboza kungaphansi kwenani elifanele (imvamisa lingaphansi kwama-60um Inani eliphakeme lezilinganiso zokufana ukucwiliswa okungu-4 ukuze kuvezwe i-matrix, futhi ukumelana nokugqwala akuqinisekisiwe.
2. Lawula isivinini sokuphakamisa sezingxenye ezipuletiwe. Ijubane lokuphakamisa izingxenye ezicwecwe zensimbi zisuka oketshezini lwe-zinc zinethonya elibalulekile ekugqineni kokumboza. Lapho ijubane lokuphakamisa lishesha, khona-ke Isendlalelo esinothayela siwugqinsi. Uma ijubane lokuphakamisa lihamba kancane, ukugqoka kuzoba mncane. Ngakho-ke, ijubane lokuphakamisa kufanele lifanele. Uma ihamba kancane kakhulu, ungqimba lwe-iron-zinc alloy kanye nongqimba oluhlanzekile lwe-zinc luzosakazwa ngesikhathi sokuphakanyiswa kwezingxenye ezicwecwe zensimbi, ukuze ungqimba oluhlanzekile lwe-zinc lucishe luguqulwe ngokuphelele lube ungqimba lwe-alloy, futhi kwakheka ifilimu elomile elimpunga, elinciphisa ukusebenza kokugoba kwengubo. Ngaphezu kwalokho, ngaphezu kokuhlobene nejubane lokuphakamisa, liphinde lihlobene eduze ne-angle yokuphakamisa.
3. Lawula ngokuqinile isikhathi sokucwiliswa kwe-zinc
Kuyaziwa ukuthi ubukhulu be-grating yensimbi yensimbi buhlobene ngokuqondile nesikhathi sokucwiliswa kwe-zinc. Isikhathi sokucwiliswa kwe-zinc ngokuyinhloko sihlanganisa isikhathi esidingekayo ukuze kukhishwe insiza yokunamathisela ebusweni bezingxenye ezipuletiwe kanye nesikhathi esidingekayo ukuze kushiswe izingxenye ezipuletiwe ezingeni lokushisa eliwuketshezi lwe-zinc futhi kukhishwe umlotha we-zinc endaweni ewuketshezi ngemva kokucwiliswa kwe-zinc. Ngaphansi kwezimo ezijwayelekile, isikhathi sokucwiliswa kwe-zinc sezingxenye ezipuletiweyo silawulwa kuze kufike esilinganisweni sesikhathi lapho ukusabela phakathi kwezingxenye ezipuletiwe kanye noketshezi lwe-zinc kuqedwa futhi kususwe umlotha we-zinc endaweni ewuketshezi. Uma isikhathi sisifushane kakhulu, ikhwalithi yezingxenye ezicwecwe zensimbi azinakuqinisekiswa. Uma isikhathi siside kakhulu, ukushuba nokuqina kwe-coating kuzokwanda, futhi ukumelana nokugqwala kwe-coating kuzoncishiswa, okuzothinta impilo yesevisi yezingxenye zensimbi ezicwecwe.
Isikhathi sokuthumela: Jun-20-2024