Panthawi yotumiza mphamvu, nsanja yachitsulo ndi gawo lofunikira kwambiri. Pakupanga chitsulo chachitsulo chachitsulo, njira yopangira galvanizing yotentha yotentha nthawi zambiri imatengedwa pamwamba kuti iteteze zinthu zachitsulo kuti zisawonongeke ndi mpweya wakunja ndi malo osiyanasiyana. Kugwiritsa ntchito kutentha-kuviika galvanizing ndondomeko akhoza kukwaniritsa zabwino odana ndi dzimbiri kwenikweni. Ndi zofunikira zapamwamba zotumizira mphamvu, zofunikira pakupanga zinthu zazitsulo zamagalasi zimakhalanso zapamwamba.
(1) Mfundo yofunikira ya dip galvanizing yotentha
Hot dip galvanizing, yomwe imadziwikanso kuti hot dip galvanizing, ndi imodzi mwa njira zabwino kwambiri zokutira zotetezera gawo lapansi lachitsulo. Mu madzi zinki, pambuyo workpiece zitsulo wadutsa thupi ndi mankhwala mankhwala, workpiece zitsulo kumizidwa mu nthaka yosungunuka ndi kutentha 440 ℃ ~ 465 ℃ kapena apamwamba mankhwala. Chitsulo chachitsulo chimakhudzidwa ndi zinc wosungunuka kupanga golide wa Zn Fe ndi wosanjikiza wa zinki wangwiro ndikuphimba pamwamba pazitsulo zonse zachitsulo. Pamwamba pa malata amakhala ndi kulimba kwina, amatha kupirira kukangana kwakukulu ndi kukhudzidwa, ndipo amakhala ndi kuphatikiza kwabwino ndi matrix.
Njira yopangira iyi sikuti imangokhala ndi kukana kwa dzimbiri, komanso ili ndi gawo la aloyi la Zn Fe. Ilinso ndi kukana kwamphamvu kwa dzimbiri komwe sikungafanane ndi galvanizing. Chifukwa chake, njira yokutira iyi ndiyoyenera makamaka kumadera osiyanasiyana owononga kwambiri monga asidi amphamvu, alkali ndi chifunga.
(2) Mawonekedwe a magwiridwe antchito a dip galvanizing yotentha
Lili ndi wosanjikiza ndi wandiweyani koyera zinki pamwamba pa zitsulo, zomwe zingapewe kukhudzana ndi gawo lapansi lachitsulo ndi njira iliyonse ya dzimbiri ndikuteteza gawo lachitsulo kuti lisawonongeke. M'mlengalenga, gawo lochepa thupi la zinc oxide limapangidwa pamwamba pa nthaka, zomwe zimakhala zovuta kusungunuka m'madzi, choncho zimagwira ntchito inayake poteteza matrix achitsulo. Ngati zinki okusayidi ndi zigawo zina mu mlengalenga kupanga insoluble zinki mchere, odana ndi dzimbiri zotsatira zabwino kwambiri.
Pambuyo pa kuviika kotentha, chitsulocho chimakhala ndi gawo la aloyi la Zn Fe, lomwe ndi lophatikizana komanso limalimbana ndi dzimbiri lapadera m'mlengalenga wamchere wamchere komanso mlengalenga wa mafakitale. Chifukwa cha kugwirizana kolimba, Zn Fe ndi yosakanikirana ndipo imakhala ndi mphamvu yokana kuvala. Chifukwa nthaka ali ductility wabwino ndi aloyi wosanjikiza ndi zolimba Ufumuyo gawo lapansi zitsulo, otentha-kuviika kanasonkhezereka workpiece akhoza kupangidwa ndi ozizira kukhomerera, kugudubuza, kujambula waya, kupinda, etc. popanda kuwononga ❖ kuyanika nthaka.
Pambuyo galvanizing otentha, workpiece zitsulo ndi lofanana ndi mankhwala annealing, amene angathe bwino kusintha makina a zitsulo gawo lapansi, kuthetsa nkhawa workpiece zitsulo pakupanga ndi kuwotcherera, ndipo ndi bwino kutembenuza workpiece zitsulo.
Pamwamba pazitsulo zopangira zitsulo pambuyo pa galvanizing yotentha ndi yowala komanso yokongola. Zinc wosanjikiza ndi gawo la pulasitiki la zinki kwambiri muzitsulo zotentha za dip. Makhalidwe ake ali ofanana ndi zinc yoyera, ndipo imakhala ndi ductility, choncho imasinthasintha.
Nthawi yotumiza: Aug-26-2022
