Ukugqwala okumhlophe kuyisenzakalo esingemuva kokuvuthwa. Isibopho sokuvimbela silele endleleni opakishwa ngayo, ophathwa ngayo futhi ogcinwe ngayo ngaphambi kokufaka nokusetshenziswa komkhiqizo. Ukuba khona kokugqwala okumhlophe akubonisi ukusebenza kwe-galvanized coating, kodwa kunalokho kuwumthwalo wabo bonke abathintekayo ochungechungeni lokuhlinzekwa kwempahla ukuqinisekisa ukuthi izimbangela zokugqwala okumhlophe ziyabonakala futhi ubungozi bokwenzeka kwakho buncishiswe ezinsimbi ezisanda kwenziwa. Uma kukhulunywa ngepayipi likathayela elishisayo laseShayina, lapho insimbi esanda kufakwa uthayela ichayeka emanzini ahlanzekile (imvula, amazolo noma ukujiya), endaweni entula umoya-mpilo, amanzi azoqhubeka esabelana ne-zinc futhi kancane kancane adle ukunamathela. Isimo esivame kakhulu lapho ukugqwala okumhlophe kwenzeka khona ngemikhiqizo eyenziwe ngamathangi akhiwe ndawonye, ahlanganiswe ngokuqinile, noma lapho amanzi engakwazi ukungena phakathi kwezinto futhi ahlale isikhathi eside.
Ngokuvamile, amanzi ahlanzekile (i-H2O) awaqukethe usawoti noma amaminerali ancibilikisiwe futhi i-zinc izosabela ngokushesha ngamanzi ahlanzekile ukuze yenze i-zinc hydroxide, i-zinc emhlophe enkulu kanye ne-oxide engazinzile ye-zinc. Ipayipi lensimbi liqukethe i-zinc encane ehlanganiswe ne-substrate yensimbi. Le nhlanganisela ihlinzeka ngezinto ezinezici zemishini zensimbi ezithuthukisiwe ngokumelana nokugqwala kwe-zinc. Kodwa-ke, lapho ubuso obunama-galvanized sehlaselwe futhi i-zinc hydroxide compounds yakhiwe, kuyinto efiselekayo ukususa imikhiqizo ye-oxide ebusweni ngoba: 1) ubukhona babo buvimbela ukwakheka kwe-carbonate based oxides ezinzile; 2) azibukeki.
Mayelana nepayipi lensimbi elibandayo eligoqiwe, ukuphinda udlulise indawo enamapulangwe kungenye indlela yokwelapha ebaluleke kakhulu yepayipi lensimbi elisebenza. Ikakhulukazi, lapho ukugqwala okumhlophe kwenzeke khona futhi into ingase ibe ngaphansi kokuchayeka okuqhubekayo okungase kusabalalise ukugqwala okufanayo, ukuphinda kudlule indawo engaphezulu kungenziwa ngokwelapha indawo engaphezulu ngesixazululo esingu-5% sodium dichromate 0.1% sulfuric acid, ukuxubha nge ibhulashi locingo eliqinile imizuzwana engu-30 ngaphambi kokuhlanzwa ngokuphelele kwendawo. Njengomkhiqizi ochwepheshile wamashubhu ensimbi waseChina, sithanda ukuhlinzeka ngezinyathelo ezimbalwa ezilula ezinganciphisa kakhulu noma ziqede ukwakheka kokugqwala okumhlophe ngale ndlela elandelayo ukuze uqonde:
• Gcina umsebenzi opakishiwe womile
• Pakisha izinto ukuze uvumele ukuhamba komoya phakathi kwezindawo
• Beka izinto ezipakishiwe ukuze amanzi aphume
• Phatha indawo engaphezulu ngesinqamuleli samanzi noma izivimbelo ukuze uvimbele ukuthintana komswakamo nendawo enamanzi.
Thumela umlayezo wakho kithi:
Isikhathi sokuthumela: Aug-20-2018
