Don kula da tankin wanka na hydrochloric acid, abu mafi mahimmanci shine sarrafa lokacin tattarawa da rayuwar tanki, don tabbatar da matsakaicin yawan aiki da rayuwar sabis na tanki.
Don samun sakamako mafi kyau na pickling, yakamata a fara sarrafa yawan adadin hydrochloric acid, sannan a sarrafa abun cikin ion baƙin ƙarfe (gishirin ƙarfe) a cikin maganin pickling.Domin ba kawai maida hankali na acid zai shafi pickling sakamako na workpiece, amma kuma abun ciki na baƙin ƙarfe ions zai rage taro juzu'i na pickling bayani, wanda kuma zai shafi pickling sakamako da kuma gudun workpiece.Ya kamata a lura da cewa don samun mafi kyawun kayan aikin pickling, maganin pickling dole ne ya ƙunshi adadin ions na baƙin ƙarfe.
(1)Lokacin pickling
A gaskiya ma, lokacin pickling ya dogara ne akan yawan adadin hydrochloric acid/iron ions (gishirin ƙarfe) da zafin jiki na maganin pickling.
Dangantaka tsakanin lokacin tsinke da abun ciki na zinc:
Sanannen abu ne a cikin ayyukan motsa jiki mai zafi cewa yin amfani da kariya daga overpickling na galvanized workpieces yana haifar da ƙarin ɗorawa zinc, watau "overpickling" yana ƙara yawan amfani da zinc.
Gabaɗaya, nutsewa a cikin tanki na pickling na awa 1 ya isa ya cire tsatsa gaba ɗaya.Wani lokaci, a ƙarƙashin yanayin aiki na masana'anta, ana iya sanya kayan aikin da aka sanya a cikin tanki na dare, wato, nutsewa na sa'o'i 10-15.Irin wannan galvanized workpieces suna plated da ƙarin zinc fiye da al'ada pickling.
(2)Mafi kyawun Pickling
Mafi kyawun tasirin aikin aikin ya kamata ya kasance lokacin da maida hankali na hydrochloric acid da taro na ions baƙin ƙarfe (gishiri na baƙin ƙarfe) ya kai ma'aunin dangi.
(3)Hanyar gyara don raguwar tasirin acid
Lokacin da maganin pickling ya ragu ko ya rasa tasirin pickling saboda jikewar ion baƙin ƙarfe (gishiri na ƙarfe), ana iya diluted da ruwa don dawo da aikin pickling.Ko da yake an rage maida hankali na acid hydrochloric, aikin pickling har yanzu ana iya aiwatar da shi, amma ƙimar yana da hankali.Idan an ƙara sabon acid zuwa maganin pickling tare da cikakken ƙarfe na ƙarfe, ƙaddamar da sabon maganin wankewar hydrochloric acid zai faɗi sama da ma'aunin jikewa, kuma ɗaukar kayan aikin ba zai yiwu ba.
(4)Ma'auni na jiyya bayan ƙarancin acid ɗin ya ragu
Lokacin da aka yi amfani da maganin pickling na ɗan lokaci, ƙarfinsa yana raguwa har ma ya zama ruwan sharar gida.Duk da haka, acid a wannan lokacin ba zai iya dawo da mai sana'anta ba, kuma har yanzu yana riƙe da wata ƙima don amfani.Don amfani da ƙananan acid tare da raguwar maida hankali, a wannan lokacin, kayan aikin da ke da zubar da ruwa na gida a cikin galvanizing mai zafi kuma suna buƙatar sake tsoma su gabaɗaya ana sanya su a cikin su, pickling da reprocessing shima ingantaccen amfani ne. sharar acid.
Hanyar maye gurbin tsohon acid tare da maganin pickling hydrochloric acid:
Lokacin da gishirin ƙarfe a cikin tsohon acid ya wuce ƙayyadaddun abun ciki, ya kamata a maye gurbinsa da sabon acid.Hanyar ita ce sabon acid ɗin yana da kashi 50%, ana ƙara tsohon acid ɗin zuwa sabon acid bayan hazo, adadin tsoho acid shine ~ 50%.Iron salts tare da abun ciki na kasa da 16% na iya ƙara yawan aiki na maganin pickling, wanda ya bambanta da acid sparse, kuma yana adana adadin acid.
Koyaya, a cikin wannan hanyar, tare da ci gaban fasahar galvanizing mai zafi, adadin tsohuwar acid ɗin da aka ƙara dole ne a aiwatar da shi bisa la'akari sosai da sarrafa abubuwan da ke cikin gishirin baƙin ƙarfe na tsohon acid, da haɓakar gishirin ƙarfe a cikin sabon sabo. ya kamata a sarrafa maganin hydrochloric acid da aka shirya a cikin tafin hannunka.A cikin kewayon, dole ne ku bi wasu dabi'u a makance.
Workpiece karfe abu da pickling gudun
A pickling gudun bambanta da abun da ke ciki na pickled karfe workpiece da sakamakon sikelin.
Abubuwan da ke cikin carbon a cikin ƙarfe yana da tasiri mai girma akan ƙimar rushewar matrix na karfe.Ƙara yawan abun ciki na carbon zai ƙara yawan rushewar matrix na karfe da sauri.
Matsakaicin rushewar matrix workpiece na karfe bayan aikin sanyi da zafi yana ƙaruwa;yayin da rushe kudi na karfe workpiece bayan annealing zai rage.A cikin ma'auni na baƙin ƙarfe oxide akan saman kayan aikin ƙarfe, adadin narkar da baƙin ƙarfe monoxide ya fi girma fiye da na ferric oxide da ferric oxide.Gilashin ƙarfe da aka yi birgima sun ƙunshi ƙarin baƙin ƙarfe monoxide fiye da zanen ƙarfe da aka toshe.Saboda haka, gudun pickling shima yana da sauri.Da kauri fatar baƙin ƙarfe oxide, zai fi tsayi lokacin tsinke.Idan kaurin ma'aunin baƙin ƙarfe oxide bai zama iri ɗaya ba, yana da sauƙi don samar da lahani a ƙasa ko tsinkewar gida.
Lokacin aikawa: Fabrairu-27-2023