Mtedza wowotcherera ndi mtedza wokhazikika ku chogwirira ntchito powotcherera. Mitundu yodziwika bwino imaphatikizapo mtedza wowotcherera (DIN929) ndi mtedza wowotcherera (DIN2527). Mapangidwe ake amaphatikizapo gawo la ulusi ndi zitsulo zowotcherera. Malo owotcherera ali ndi bwana kapena ndege kuti awonjezere mphamvu zowotcherera.

Mtedza wakuda wamphamvu kwambiri ndi mtedza womwe umapanga filimu yakuda ya Fe₃O₄ oxide pamwamba pazitsulo za alloy kupyolera mu mankhwala oxidation (mankhwala akuda). Zinthu zoyambira nthawi zambiri zimakhala 42CrMo kapena 65 manganese chitsulo. Pambuyo pozimitsa + chithandizo cha kutentha, kuuma kumatha kufika HRC35-45.

Mtedza woletsa kumasula ndi mtedza womwe umalepheretsa mtedza kumasuka kudzera mu mapangidwe apadera.

Mtedza wamtundu wa zinki umadutsa pamaziko a electrogalvanizing kuti apange filimu yamtundu wa utawaleza (yokhala ndi trivalent chromium kapena hexavalent chromium) yokhala ndi makulidwe a filimu pafupifupi 0.5-1μm. Kuchita kwake kotsutsana ndi dzimbiri ndikwabwinoko kuposa electrogalvanizing wamba, ndipo mtundu wapamtunda ndi wowala, ndi magwiridwe antchito komanso kukongoletsa.

Mtedza wa electrogalvanized ndi mtedza wodziwika kwambiri. Zinc wosanjikiza waika pamwamba pa mpweya zitsulo kudzera njira electrolytic. Pamwamba pake ndi zoyera za silvery kapena bluish white, ndipo zimakhala ndi anti-corrosion ndi ntchito zokongoletsa. Mapangidwe ake amaphatikizapo mutu wa hexagonal, gawo la ulusi, ndi galvanized layer, zomwe zimagwirizana ndi GB / T 6170 ndi zina.

Electroplated galvanized flange nati ndi mtedza wapadera wokhala ndi flange wozungulira womwe umawonjezeredwa kumapeto kwa nati wa hexagonal. Flange imawonjezera malo okhudzana ndi magawo ogwirizana, imabalalitsa kupanikizika ndikuwonjezera kukana kukameta ubweya. Kapangidwe kake kumaphatikizapo gawo la ulusi, flange ndi galvanized layer. Mitundu ina imakhala ndi mano oletsa kutsetsereka pamwamba pa flange (monga DIN6923 standard).