Ebisara na 2018-12-22Ngwọta ọgwụgwọ Dacromet bụ ihe ngwọta mmiri na-agbasasị nke nwere zinc flakes, flakes aluminum, anhydrous chromic acid, ethylene glycol, zinc oxide, wdg, na-enwe dayameta nke anọ ruo ise micrometer na ọkpụrụkpụ nke anọ na ise micrometers.Mgbe emeso workpiece na-mikpu ma ọ bụ fesa na ọgwụgwọ mmiri mmiri, n'elu nke workpiece bụ thinly arapara na a mkpuchi mmiri mmiri, na mgbe ahụ kpụ ọkụ n'ọnụ dị ka 300 Celsius C na-agwọ ọkụ ọkụ na-eme ka hexavalent chromium na mkpuchi oyi akwa The organic okwu. dị ka ethylene glycol na-ebelata ka ọ bụrụ mmiri na-adịghị edozi, amorphous nCrO3 na mCr2O3.N'okpuru ọrụ ya, a na-ejikọta mpempe akwụkwọ zinc na aluminom ọnụ, na ọtụtụ n'ígwé na-ekpokọta n'elu nke workpiece.Ihe mkpuchi ahụ, yana acid chromic anhydrous na mkpuchi Dacromet, na-eme ka ọ dị elu nke ọrụ ahụ iji mee ka adhesion nke mkpuchi ahụ dị n'elu ọrụ ahụ.
A na-ewere usoro mgbochi nchara nke mkpuchi Dacromet dị ka ndị a:
1. Nchekwa ịchụ onwe onye na-achịkwa nke zinc ntụ ntụ;
2. The chromic acid na-etolite a ok oxide film n'elu nke workpiece na-adịghị mfe corroded n'oge nhazi;
3. Ihe mkpuchi nke nwere ọtụtụ iri n'ígwé nke zinc na aluminum sheets na-etolite ọrụ nchebe, nke na-eme ka onye na-abanye n'ime ya dị n'elu ọrụ ahụ.
Ụzọ nke gafere.Electro-galvanizing na-ekpuchi ozugbo na akwa zinc n'elu ígwè.Corrosion ugbu a dị mfe ịfe n'etiti ọkwa.Karịsịa na gburugburu ebe ịgba nnu, ihe nchebe na-ebelata nke ukwuu ka zinc dị mfe iri.A na-emepụta nchara ọcha n'oge mmalite nke nhazi.Ma ọ bụ ajari uhie.Ọgwụgwọ Dacromet nwere mpempe akwụkwọ zinc kpuchie ya na ogige chromic acid, na conductivity dị oke oke, yabụ na ọ nwere ezigbo nguzogide corrosion.A na-ekpuchi mpempe akwụkwọ zinc ndị a na-ekpuchi n'ígwé na-eme ka ọ bụrụ ọta, a na-achịkwa ọnụego mmiri ozuzo nke zinc ọbụna na ule ịgba nnu.Ọzọkwa, ebe ọ bụ na chromic acid compound na Dacromet akọrọ film enweghị mmiri kristal, ya elu okpomọkụ na-eguzogide na corrosion iguzogide mgbe kpo oku dịkwa mma.
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Oge nzipu: Jan-13-2022