Ukwethulwa kwe-Acid Pickling and Passivation
Amapayipi ensimbi asetshenziswa kakhulu ezimbonini ezahlukahlukene ngenxa yokuqina kwawo okuhle kakhulu, amandla, nokungagqwali kwawo. Kodwa-ke, ukuze kuqinisekiswe ukusebenza kwazo okuphelele nokuphila isikhathi eside, kubalulekile ukusebenzisa izindlela zokwelapha ezisebenzayo ezifana nokucotshwa kwensimbi nokudlula. Le bhulogi ihlose ukucacisa ukubaluleka kwalezi zinqubo ekuthuthukiseni ikhwalithi nokuqina kwamapayipi ensimbi.
Isigaba 1: Kuyini Ukukha insimbi?
I-Steel pickling inqubo yamakhemikhali ehlanganisa ukukhishwa kokungcola, njengokugqwala, isikali, nama-oxides, ebusweni bamapayipi ensimbi. Inhloso eyinhloko yokukhetha ukuhlanza ubuso bensimbi kahle, ukuyilungiselela ukwelapha okungaphezulu okufana nokudlula.
Phakathi nenqubo yokukhetha, amapayipi ensimbi acwiliswa kwisisombululo esimuncu, ngokuvamile esihlanganisa i-hydrochloric noma i-sulfuric acid. I-asidi ihlangana nokungcola, ikuncibilikise futhi iwasuse endaweni yensimbi, ishiye isiphetho esihlanzekile nesibushelelezi.
Isigaba 2: Inqubo Yokukha:
Inqubo yokukhetha ihlanganisa izinyathelo ezimbalwa zokuqinisekisa ukukhishwa okusebenzayo kokungcola emapayipini ensimbi:
Isinyathelo 1: Ukususa amafutha: Ngaphambi kokukhetha, amapayipi ensimbi ayakhishwa ukuze kukhishwe amafutha, amafutha, noma ukungcola okukhona ngaphezulu. Lesi sinyathelo siqinisekisa ukuthi i-asidi ingakwazi ukuxhumana ngokuqondile nokungcola endaweni yensimbi.
Isinyathelo sesi-2: Ukucwiliswa kwe-Acid: Amapayipi asuliwe abe esecwiliswa kwikhambi le-asidi yokukha. Ubude besikhathi sokucwiliswa buncike ezintweni ezifana nohlobo nokujiya kongqimba lwe-oxide. Ngesikhathi sokucwiliswa, kubalulekile ukuqapha izinga lokushisa nokugxila kwe-asidi ukuze kuzuzwe imiphumela oyifunayo.
Isinyathelo sesi-3: Hlanza i-Acid: Ngemva kwenqubo yokukhetha, amapayipi ahlanzwa kahle ngamanzi ukuze kukhishwe noma iyiphi i-asidi esele. Lesi sinyathelo sibalulekile ukuze kuvinjwe noma yikuphi ukusabela kwamakhemikhali okungenzeka ngesikhathi sokwelashwa okulandelayo.
Isigaba 3: Ukubaluleka Kokukhetha Insimbi:
Inqubo yokukhetha insimbi inikeza izinzuzo eziningi zamapayipi ensimbi:
1. Ukususa Ukugqwala Nesikali: Ukuchusha kususa ukugqwala nesikali endaweni yensimbi. Lokhu kungcola kungaphazamisa ubuqotho nokubukeka kwamapayipi, okuholela ekugugeni ngaphambi kwesikhathi kanye nokwehluleka okungenzeka kwesakhiwo.
2. Ukumelana Nokugqwala Okuthuthukisiwe: Ngokususa ukungcola, ukucosha kudala indawo ehlanzekile nengenayo i-oxide, okwenza insimbi imelane nokugqwala. Lokhu kubaluleke kakhulu kumapayipi asetshenziswa ezindaweni ezinokhahlo noma achayeke kumakhemikhali nomswakama.
3. Ukunamathela Okuthuthukisiwe: I-Pickling ilungiselela ingaphezulu lensimbi ngokudala ukuthungwa okuqinile, okuvumela okunamathelayo okulandelayo noma ukwelapha ukuthi kubambelele ngokuphumelelayo. Lokhu kuqinisekisa ukunamathela okungcono kwamapende okuzivikela noma ama-coatings, okufaka isandla ekuqina kwesikhathi eside kwamapayipi ensimbi.
Isigaba 4: Ukuqonda I-Passivation:
Ngemuva kokukhetha, amapayipi ensimbi enza inqubo yokudlula ukuze enze isendlalelo se-oxide esivikelayo ebusweni. Lokhu kufezwa ngokucwilisa amapayipi ku-ejenti edlulayo, ngokuvamile isisombululo esihlanjululwe se-nitric acid.
I-passivation yakha ifilimu elincanyana, elisobala le-chromium oxide ebusweni bensimbi, esebenza njengesithiyo ngokumelene nokugqwala. Lesi sendlalelo siphinde sisize ekugcineni ukukhanga kobuhle bensimbi kuyilapho kunciphisa ubungozi bokungcola noma ukuguquguquka kombala.
Isigaba 5: Izinzuzo Zokudlula:
I-Passivation inikeza izinzuzo ezimbalwa ezibalulekile zamapayipi ensimbi:
1. Ukumelana Nokugqwala: Ukwakheka kongqimba lwe-oxide evikelayo ngokusebenzisa i-passivation kuthuthukisa ngokuphawulekayo ukumelana nokugqwala kwensimbi, kuqinisekisa ukuphila okude kanye nezimfuneko zokunakekela ezincishisiwe.
2. Isikhalazo Sobuhle: I-Passivation isiza ukugcina ukubonakala okubonakalayo kwamapayipi ensimbi ngokunciphisa amathuba okuba namabala angaphezulu, ukushintsha kombala, noma amabala okugqwala. Lokhu kubaluleke kakhulu kumapayipi asetshenziswa ekwenziweni kwezakhiwo noma zokuhlobisa.
3. Impilo Nokuphepha: I-passivation idala indawo engasebenzi ngamakhemikhali, enciphisa ingozi yokucwiliswa kwensimbi noma ukungcola, ikakhulukazi kumapayipi asetshenziselwa ukudlulisa amanzi okuphuza noma imikhiqizo yokudla.
Isiphetho:
Sengiphetha, insimbi pickling kanye passivation yizinyathelo ezibalulekile ezinqubweni ukwelapha surface amapayipi ensimbi. Ukususwa okusebenzayo kokungcola nge- pickling, okulandelwa ukwakheka kongqimba lwe-oxide evikelayo ku-passivation, kukhulisa kakhulu ukuqina, ukumelana nokugqwala, kanye nokukhanga kobuhle kwamapayipi ensimbi. Ngokuqonda ukubaluleka kwalezi zinqubo, izimboni zingaqinisekisa isikhathi eside nokuthembeka kwamapayipi ensimbi ekusetshenzisweni okuhlukahlukene, ekugcineni okuholela ekusebenzeni okuthuthukisiwe nokwaneliseka kwamakhasimende.
Isikhathi sokuthumela: Mar-30-2024