isigubhu sokwelashwa kwangaphambilini kanye nokushisa
Incazelo Yomkhiqizo
- Ukwelashwa kwangaphambi kwesikhathi kuyinqubo eyinhloko yokufakwa kwe-hot-dip galvanizing, okunomthelela omkhulu kwikhwalithi yemikhiqizo ye-galvaning. Ukushisa kwangaphambi kwesikhathi kuhlanganisa: ukususa amafutha, ukususa ukugqwala, ukuwasha ngamanzi, usizo lokufaka amaplanga, inqubo yokomisa, njll.
Njengamanje, embonini ye-hot-dip galvanizing yasekhaya, ithangi le-concrete granite pickling lisetshenziswa kabanzi. Ngokwethulwa kobuchwepheshe obuthuthukisiwe be-hot-dip galvanizing eYurophu naseMelika, amathangi e-PP (polypropylene)/PE (polyethylene) pickling asetshenziswa kakhulu emigqeni ethile yokukhiqiza i-hot-dip galvanizing ngokuzenzakalelayo.
Kuye ngokuthi ibala likawoyela lingakanani ebusweni be-workpiece, ukususa amafutha kuyasuswa kwezinye izinqubo.
Ithangi lokususa amafutha, ithangi lokuwasha amanzi kanye nethangi lokusiza ukubopha ngokuvamile zenziwe ngesakhiwo sikakhonkolo, kanti ezinye zenziwe ngezinto ezifanayo nethangi lokukhuhla.
Ukushisa kwangaphambi kokwelashwa
Sebenzisa ukushisa okulahliwe kwegesi yoketshezi ukufudumeza wonke amathangi angaphambi kokwelashwa, okuhlanganisa nokususa amafutha,ukukhahlelakanye ne-assistant plating. Uhlelo lokushisa olulahliwe luhlanganisa:
1) Ukufakwa kwe-heat exchanger ehlanganisiwe ku-flue;
2) Isethi eyodwa ye-PFA heat exchanger ifakiwe kuzo zombili iziphetho zechibi ngalinye;
3) Uhlelo lwamanzi athambile;
4) Uhlelo lokulawula.
Ukushisa kwangaphambi kokwelashwa kuqukethe izingxenye ezintathu:
① Isishintshi sokushisa segesi yoketshezi
Ngokwenani eliphelele lokushisa okufanele kufudunyezwe, i-combined flue heat exchanger yaklanywa futhi yakhiqizwa, ukuze ukushisa kuhlangabezane nezidingo zokushisa. Uma ukushisa okulahliwe kwe-flue kungakwazi ukuhlangabezana nesidingo sokushisa sokushisa sokwelashwa kwangaphambi kokwelashwa, isethi yesithando somoya oshisayo singangezwa ukuqinisekisa ivolumu yegesi ye-flue.
I-heat exchanger yenziwe ngensimbi engagqwali engamelani nokushisa noma ipayipi lensimbi elingenamthungo elingu-20 # eline-infrared nano high-temperature anti-corrosion coating entsha. Amandla okumunca ukushisa angama-140% okushisa amuncwa yi-waste heat exchanger evamile.
② Isishintshi sokushisa se-PFA
③Ihhavini yokomisa
Uma umkhiqizo omanzi ungena ebhavini le-zinc, kuzobangela ukuthi uketshezi lwe-zinc luqhume futhi luchitheke. Ngakho-ke, ngemva kosizo lokufaka iplati, inqubo yokomisa kufanele futhi isetshenziswe ezingxenyeni.
Ngokuvamile, izinga lokushisa lokomisa akufanele lidlule ku-100 ° C futhi akufanele libe ngaphansi kuka-80 ° C. Ngaphandle kwalokho, izingxenye zingafakwa kuphela emgodini wokomisa isikhathi eside, okuzobangela kalula ukumuncwa komswakama kwe-zinc chloride efilimini kasawoti ye-plating aid ebusweni bezingxenye.
