Momwe kutentha mbale zitsulo mbale

Hot dip galvanizing ya zitsulo mbale amatchedwanso otentha dip galvanizing.Zinc ingots amasungunuka m'madera otentha ndipo zida zina zothandizira zimawonjezedwa mu dip galvanizing yotentha.Zigawo za gridi yachitsulo zimanyowetsedwa mu thanki yopangira galvanizing ndipo galvanizing wosanjikiza amamangiriridwa ku mbale yachitsulo.Mphamvu ya kutentha kuviika galvanizing zimadalira kukana dzimbiri, ndi adhesion ndi kuuma kanasonkhezereka pepala bwino.Kuchuluka kwa kanasonkhezereka zitsulo mbale pambuyo galvanizing.Choncho ichi ndi kuchuluka kwa zinc.
The zikuchokera otentha divi galvanizing wosanjikiza wapangidwa otentha divi galvanizing wosanjikiza wapangidwa ndi chitsulo nthaka aloyi pakati chitsulo masanjidwewo ndi pamwamba koyera nthaka wosanjikiza.Maonekedwe a workpiece apangidwa ndi chitsulo nthaka aloyi wosanjikiza mu kuviika otentha, kuti chitsulo ndi koyera nthaka wosanjikiza kukhudza kwambiri.Pamene chitsulo workpiece kumizidwa mu wosungunula nthaka njira, woyamba nthaka ndi chitsulo (thupi) aumbike pa mawonekedwe.Iyi ndi krustalo yopangidwa ndi maatomu a zinki muchitsulo cholimba chachitsulo.Pamene maatomu awiri achitsulo aphatikizidwa pamodzi, mphamvu yokoka pakati pa maatomuyo imakhala yochepa kwambiri.

Motero, nthaka ikakwanira m’kusungunuka kolimba, maatomu aŵiri a zinki ndi chitsulo amamwazikana.Ma atomu a zinki omwe ali muzitsulo zachitsulo amasunthidwa m'kati mwa matrix, ndipo zinthu zachitsulo zimapangidwira pang'onopang'ono kukhala alloys.Zinki zikuchokera chitsulo ndi intermetallic pawiri FeZn13 mu sungunuka zinki njira ndi pansi otentha kanasonkhezereka pepala angagwiritsidwe ntchito ngati nthaka slag.Zinc wosanjikiza wangwiro wopangidwa ndi zinc leaching solution ndi hexagonal crystal.
Pamene kutentha kukuyenda pa kutentha komweko ndipo kutentha komweko kumasungidwa, kuchuluka kwachitsulo kusungunuka sikufanana.Pafupifupi 500, kutayika kwachitsulo kumawonjezeka kwambiri ndikuwonjezera kutentha ndi kutsekemera.Ndiwotsika kapena wapamwamba kuposa 480 ~ 510c, ndipo kutayika kwa chitsulo cha epitaxial kumakhala pang'onopang'ono, ndipo n'kovuta kupeza nthawiyo.Chifukwa chake, aliyense adzatcha 480 ~ 510c malo oyipa osungunuka.
M'malo otentha awa, yankho la zinki limawonongeka kwambiri ndi chogwirira ntchito ndi mphika wa nthaka, ndipo chitsulo chimatayika pa madigiri 560 Celsius kuti chiwonjezeke, ndipo nthaka idzakhala gawo lapansi lachitsulo pamwamba pa 660 digiri Celsius, zinki slag zidzawonjezedwa. mwachangu, plating sangathe kugwiritsidwa ntchito.Choncho, electroplating ikuchitika mu osiyanasiyana 430 ~ 450 madigiri Celsius.