Jikin mota mai galvanized na iya rube kuma me yasa hakan ke faruwa
Abubuwa
Galvanizing yana da wani matakin kariya - electrochemical. Zinc da baƙin ƙarfe sun zama nau'i-nau'i na galvanic, wato, idan sun hadu da danshi, wutar lantarki ya fara gudana a tsakanin su kuma daya daga cikin ma'aikatan biyu ya fara rushewa.
Idan ka bar guntun ƙarfe a sararin sama, makomarsa za ta zama bakin ciki kuma ba makawa: ba da dade ko ba dade karfen zai fara rube ya zama kura. Don jinkirta farkon tsarin lalata kuma rage shi, masu motoci suna zuwa dabaru daban-daban - suna rufe karfe na jiki tare da multilayer "sanwici" na mastics, primers, fenti da varnishes.
Don ci gaba da tsare motar, wasu kamfanonin kera motoci suna rufe dukkan jiki (ko sassanta) da zinc. Amma ko da galvanized mota jiki rots - daga baya a cikin rubutu na labarin.
Me yasa sassan galvanized sun fi juriya ga lalata fiye da farantin karfe
Lalacewa shine halayen ƙarfe tare da oxygen, lokacin da aka samar da daidaitaccen oxide (a cikin yanayin ƙarfe (ƙarfe) - FeO2, sanannen tsatsa). Sauran karafa suna amsawa tare da oxygen - aluminum, jan karfe, tin, zinc. Amma ana kiran su da “bakin-bakin” saboda oxides ɗin da ke saman su suna samar da fim na sirara, mai ɗorewa wanda iskar oxygen ba ta shiga ba. Don haka, an kiyaye matakan ciki na ƙarfe daga lalata.
A cikin yanayin karfe, halin da ake ciki yana juyawa - baƙin ƙarfe oxide ya zama sako-sako da, "flakes" na inji ba shi da ƙarfi, ta hanyar da iskar oxygen ta sami nasarar shiga gaba, cikin yadudduka masu zurfi. Wannan shine ainihin maganin kariyar karfe tare da zinc: zinc oxide dogara ne akan kare karfe ta hanyar toshe iskar oxygen. Matsayin kariya ya dogara da sigogi guda biyu: hanyar aikace-aikacen da kauri na Layer na kariya.
Ruɓewar sigar jiki
Mafi girman matakin kariya ana ba da shi ta hanyar galvanizing mai zafi - nutsar da jikin mota a cikin zurfafan zinc. Ana nuna sakamako mai kyau ta hanyar galvanic (jiki (ko sashinsa) an saukar da shi cikin wani electrolyte dauke da zinc kuma an wuce wutar lantarki), galvanizing thermal diffusion galvanizing. Ma'anar duk waɗannan hanyoyin ita ce, zinc ba kawai ana amfani da shi ba ne kawai a saman, amma kuma yana shiga cikin wani zurfin zurfi a cikin karfe da kansa, wanda ya kara yawan kayan kariya na sutura.
Galvanizing yana da wani matakin kariya - electrochemical. Zinc da baƙin ƙarfe sun zama nau'i-nau'i na galvanic, wato, idan sun hadu da danshi, wutar lantarki ya fara gudana a tsakanin su kuma daya daga cikin ma'aikatan biyu ya fara rushewa. Zinc ya fi ƙarfe aiki fiye da baƙin ƙarfe, don haka, idan akwai lalacewar inji (scratch) a kan galvanized karfe, zinc ne ya fara rushewa, kuma karfen kansa ya kasance ba a taɓa shi ba na ɗan lokaci.
Lokacin da galvanized jiki tsatsa
Babu fasahar da ta dace. Ko jikin motar da aka yi da shi ya rube, amsar ba ta da tabbas. Ba dade ko ba jima, lalata za ta shawo kan ko da mafi a hankali galvanized mota. Kuma hakan zai faru ne saboda dalilai biyu.
Lalacewa ga Layer na zinc
Dalilin da ya fi dacewa don fara tafiyar matakai na lalata a cikin galvanized karfe shine lalacewa na inji, wanda ke buɗe damar samun iskar oxygen zuwa karfe mara kariya. Na farko, Layer na zinc zai fara rushewa, sannan karfen jiki. A saboda wannan dalili, yawancin masu mallakar manyan motoci masu daraja (irin waɗannan motoci suna da suturar zinc mai inganci), koda bayan ƙananan hatsarori, suna neman kawar da motar da wuri-wuri. Hakanan zaka iya gyara jikin da aka haɗe, fenti da fenti wurin lalacewa a cikin sabis na mota, amma zaka iya dawo da mutuncin layin zinc kawai a cikin samar da masana'antu.
Zinc oxidation
Fim ɗin zinc oxide mai ƙarfi da aminci yana kare ƙarfe daga shigar iskar oxygen. Koyaya, har yanzu zinc yana raguwa a ƙarƙashin rinjayar danshi, sinadarai na hanya, da canjin yanayin zafi. Wannan yana nufin cewa oxide yadudduka suna raguwa a hankali, kuma zinc mai tsabta, yana amsawa tare da oxygen, ya samar da sabon nau'i na fim din oxide mai kariya.
Tsatsa a kan mota
A bayyane yake cewa wannan tsari na iya ci gaba na dogon lokaci, amma ba har abada ba. A cikin yanayin birni, adadin lalatawar murfin zinc shine 6-10 microns a kowace shekara. Wannan yana bayyana lokacin garanti akan ta hanyar lalata da masana'antun suka kafa: kauri daga cikin kariyar Layer ya kasu kashi ta yawan bacewar sa. A matsakaici, ya juya game da shekaru 10-15.
Abin da za a yi idan jikin galvanized ya rube
An riga an ba da amsar tambayar ko jikin motar galvanized ya ruɓe a sama. Idan tsatsa ya riga ya fara kama jikin motar, kada ku yi shakka don ziyarci sabis na mota mai kyau. Ana iya rage tafiyar matakai na lalata idan an bi da su yadda ya kamata.
Kuma don aiki ba tare da matsala ba a waje da wannan lokacin, yana da mahimmanci don kare wuraren da ba su da haɗari (kasa, sills, arches, da dai sauransu) tare da magungunan anticorrosive, saka idanu da tsabta na mota (datti yana taimakawa wajen lalata murfin kariya), da kuma kawar da kananan kwakwalwan kwamfuta da karce a cikin lokaci.
