Galvanizing yog hais txog cov txheej txheem kho saum npoo ntawm plating txheej zinc ntawm cov hlau, hlau lossis lwm yam khoom siv los ua kom zoo nkauj thiab tiv thaiv xeb.
Zinc yog yooj yim soluble nyob rau hauv acids thiab alkali, yog li nws yog hu ua amphotropic hlau.Zinc hloov me ntsis nyob rau hauv cov huab cua qhuav. Nyob rau hauv cov huab cua ntub, ib tug ntom alkaline zinc carbonate zaj duab xis yog tsim nyob rau hauv zinc nto. hydrogen sulfide thiab Marine cua, zinc corrosion kuj tsis zoo, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias thiab high humidity uas muaj cov organic acid cua, zinc txheej yog yooj yim rau corrode. Cov txheej txheem electrode muaj peev xwm ntawm zinc yog-0.76V, rau cov hlau matrix, zinc txheej belongs rau anodic txheej, nws yog tsuas yog siv los tiv thaiv corrosion ntawm hlau, nws cov kev tiv thaiv kev ua tau zoo thiab cov txheej thickness yog heev ze ze.Zinc txheej tom qab. passivation kev kho mob, staining lossis coated nrog lub teeb tiv thaiv tus neeg saib xyuas, tuaj yeem txhim kho nws cov kev tiv thaiv thiab kho kom zoo nkauj.
Txias galvanizing
Txias galvanizing, tseem hu ua electrogalvanizing, yog siv cov khoom siv electrolytic tom qab cov roj, pickling, zinc ntsev rau hauv cov tshuaj, thiab txuas cov electrode tsis zoo ntawm cov khoom siv electrolytic, nyob rau hauv qhov opposite ntawm zinc phaj, txuas nrog lub zoo electrode ntawm electrolytic. cov khoom siv fais fab, siv qhov tam sim no los ntawm qhov zoo mus rau qhov tsis zoo yuav tso ib txheej ntawm zinc rau ntawm cov yeeb nkab, txias plating yeeb nkab yog thawj zaug ua tom qab galvanizing.
Mechanical galvanized
Nyob rau hauv lub rotating nruas nruab nrog plating, iav pob, zinc hmoov, dej thiab txhawb nqa, lub khob pob raws li qhov cuam tshuam nruab nrab rotates nrog lub nruas, kev sib txhuam thiab rauj rau saum npoo ntawm plating ua rau lub cev muaj zog.Nyob rau hauv qhov kev txiav txim ntawm tshuaj lom neeg txhawb nqa, cov coated zinc hmoov "txias vuam" mus rau txheej txheej, tsim ib tug du, uniform thiab nthuav dav txheej nrog ib tug tej thickness.
Kub-galvanized
Txoj kev tseem ceeb ntawm steel phaj nto galvanizing yog kub-dip galvanizing.
Kub galvanizing yog tsim los ntawm cov laus txoj kev thiab yog ib puas thiab xya caum xyoo txij li thaum nws tau siv nyob rau hauv kev lag luam nyob rau hauv 1836.Txawm li cas los xij, kev lag luam kub-dip galvanized tau tsim nyob rau hauv ib tug loj scale nrog rau kev loj hlob sai ntawm txias dov sawb hlau. nyob rau hauv peb caug xyoo dhau los.
Cov txheej txheem ntawm cov phaj kub galvanized feem ntau suav nrog: thawj phaj pre-plating kub dip tom qab kho tiav cov khoom tshuaj xyuas, thiab lwm yam.Raws li tus cwj pwm, raws li txoj kev sib txawv plating, cov txheej txheem kub dip galvanizing muab faib rau sab nraud. thiab annealing hauv kab annealing.
Post lub sij hawm: May-13-2022