Izixazululo zezinkinga zokumboza impushana phezu kokufakwa kwamadiphu ashisayo

1. Ukwelapha okungaphelele:

• polyester powder enamathela powder ama-thermosetting resins axhumanisa kusimo sawo sokugcina sezinto eziphilayo ngokugcinwa ezingeni lokushisa (imvamisa engu-180 o C), cishe imizuzu eyi-10. Amahhavini okwelapha aklanyelwe ukunikeza lesi sikhathi ekuhlanganiseni kwezinga lokushisa. Ngezinto ezishisayo ze-dip galvanized, ezinobukhulu besigaba esisindayo, kuyadingeka ukuqinisekisa ukuthi isikhathi esanele sokumisa sivunyelwe ukuhlangabezana nemibandela yokuphulukisa. Ukushisa kwangaphambili komsebenzi osindayo kuzosiza ekusheshiseni inqubo yokuphulukisa kuhhavini yokwelapha.

2.Ukunamathelisa kahle:

• Isigaba sokugcina senqubo yokufaka amadiphu ashisayo ashisayo sibandakanya ukucishwa kwamanzi komsebenzi, ngokuvamile kusixazululo esibuthakathaka se-sodium dichromate. Le nqubo ipholisa umsebenzi ukuze ukwazi ukuphathwa futhi udlulise ingaphezulu le-galvanized coating ukuvimbela i-oxidation yangaphambi kwesikhathi ebusweni. Ukuba khona kwefilimu edlulayo ebusweni be-galvanized coating kuzophazamisa i-zinc phosphate noma i-iron phosphate pretreatment, futhi ezimweni eziningi, kwenza lezi zindlela zokwelashwa zingasebenzi. Kubalulekile ukuthi izinto ezifakwe uthayela zediphu elishisayo zingacishi ngemva kokuvuthwa. Lokhu kuqinisekisa ukuthi indawo engaphezulu ye-zinc isesimweni sokusabela kakhulu ukwamukela ukwelashwa kwangaphambili okusetshenziswa enqubweni yokumboza impushana.

3. Ukuphina:

• I-Pinholing ibangelwa ukwakheka kwamabhamuza amancane egesi embotsheni ye-polyester ngesikhathi somjikelezo wesitofu/wokwelapha. Lawa mabhamuza akha ama-crater amancane phezulu futhi awabukeki.Isizathu esiyinhloko sokumbotshwa kwephini sibonakala sengathi izinhlayiya zenhlaka ze-polyester ezihlangene ezithinta indawo yensimbi ethathiwe azihlangani ngesikhathi esifanayo nalezo ezingaphezulu kwempushana ye-polyester. ifilimu, ngenxa yobuningi bensimbi yama-galvanized , kanye nesikhathi esithathiwe ukuze ifinyelele ekushiseni kwe-fusion.
• Ama-resin akhiwe ngokukhethekile anama-ejenti 'e-degassing' athuthukisiwe ukuze adambise le nkinga ngokubambezela ukuqala kokuhlanganiswa kwempushana. Ukushisisa ngaphambili umsebenzi kuhhavini wangaphambi kokushisa ngaphambi kokufakwa kwempushana kuvumela izigaba ezinzima zediphu ezishisayo ukuthi zimbozwe ngempushana futhi zibhekane nenkinga ye-pin holing uma isetshenziswa kanye namamaki 'e-degassing' we-polyester powder coating.