Silica Sol Binder A cikin Zuba Jari

Zaɓin silica sol shafi zai shafi kai tsaye da rashin daidaituwa da daidaiton girmanzuba jari simintin gyaran kafa. Silica sol coatings gabaɗaya na iya zaɓar silica sol kai tsaye tare da babban juzu'in silica na 30%. Tsarin sutura yana da sauƙi kuma aikin ya dace. A lokaci guda, harsashin ƙwanƙwasa da aka samar ta hanyar yin amfani da rufi yana da ƙarfi sosai, kuma ana iya taƙaita sake zagayowar harsashi.

Silica sol wani nau'in ɗaure ne na yau da kullun na tushen ruwa tare da tsarin silicic acid colloid. Yana da wani polymer colloidal bayani a cikinsa sosai tarwatsa silica barbashi ne mai narkewa a cikin ruwa. Barbashi na colloidal suna da siffar zobe kuma suna da diamita na 6-100 nm. Thetsarin zuba jariyin harsashi shine tsarin gelling. Akwai abubuwa da yawa da ke tasiri gelation, galibi electrolyte, pH, sol maida hankali da zafin jiki. Akwai nau'ikan siliki na siliki na kasuwanci da yawa, kuma mafi yawan amfani da shi shine alkaline silica sol tare da abun ciki na silica na 30%. Tsarin yin siliki sol harsashi yana da sauƙi. Kowane tsari yana da matakai uku: shafi, yashi, da bushewa. Ana maimaita kowane tsari sau da yawa don samun harsashi mai yawa na kauri da ake buƙata.

Gabaɗaya akwai hanyoyi guda biyu don samar da silica sol: musayar ion da rushewa. Hanyar musayar ion tana nufin musayar ion na gilashin ruwa mai narkewa don cire ions sodium da sauran ƙazanta. Sa'an nan kuma an tace maganin, zafi da kuma mayar da hankali ga wani nau'i mai yawa don samun silica sol. Hanyar rushewa tana nufin yin amfani da siliki mai tsabta na masana'antu (yawan juzu'i na silicon ≥ 97%) azaman albarkatun ƙasa, kuma a ƙarƙashin aikin mai kara kuzari, an narkar da shi kai tsaye cikin ruwa bayan dumama. Sa'an nan kuma, ana tace maganin don samun silica sol.

Ma'aunin Fasaha na Silica Sol don Fitar da Zuba Jari
A'a.	Haɗin Sinadari (ƙarancin juzu'i, %)		Abubuwan Jiki				Wasu
	SiO2	Na 2O	Yawan yawa (g/cm3)	pH	Dankowar Kinematic (mm2/s)	Girman SiO2 (nm)	Fuskanci	Matsayin Tsaye
1	24-28	≤ 0.3	1.15 - 1.19	9.0 - 9.5	≤ 6	7-15	a cikin invory ko haske koren launi, ba tare da najasa ba	≥ shekara 1
2	29-31	≤ 0.5	1.20 - 1.22	9.0 - 10	≤ 8	9-20		≥ shekara 1

Simintin gyare-gyaren da aka samu ta hanyar yin harsashi na silica sol yana da ƙarancin ƙarancin ƙasa, daidaito mai girma da tsayin daka na yin harsashi. Ana amfani da wannan tsari sosai wajen yin simintin gyare-gyaren zafi mai zafi, ƙarfe mai jure zafi, bakin karfe, carbon steel, ƙananan allurai, gami da aluminum gami da tagulla.

Silica sol madaidaicin asarar kakin simintin simintin gyare-gyaren kakin zuma ya dace don sake samar da abubuwan haɗin sifar net daga nau'ikan ƙarfe daban-daban da gami da manyan ayyuka. Kodayake gabaɗaya ana amfani da shi don ƙananan simintin gyare-gyare, an yi amfani da wannan tsari don samar da cikakkun firam ɗin ƙofa na jirgin sama, tare da simintin ƙarfe har zuwa kilogiram 500 da simintin aluminum har zuwa 50 kgs. Idan aka kwatanta da sauran hanyoyin yin simintin gyare-gyare kamar simintin ɗigon mutuwa ko yashi, yana iya zama tsari mai tsada. Koyaya, abubuwan da za'a iya samar da su ta amfani da simintin saka hannun jari na iya haɗawa da rikitattun kwane-kwane, kuma a mafi yawan lokuta abubuwan da aka haɗa ana jefa su kusa da sifar yanar gizo, don haka suna buƙatar kaɗan ko a'a sake yin aiki sau ɗaya.

Babban abubuwan da ke cikin rufin kakin zuma na aikin simintin saka hannun jari sune:
Layer Layer silica sol m. Zai iya tabbatar da ƙarfin daɗaɗɗen sararin samaniya kuma tabbatar da cewa farfajiyar ba ta fashe ba;
Refractory. Shi ne gaba ɗaya high-tsarki zirconium foda don tabbatar da cewa shafi yana da isasshen refractoriness kuma ba ya amsa chemically tare da narkakkar karfe.
Mai mai. Yana da surfactant. Saboda rufin silica sol shine rufin ruwa na ruwa, rashin daidaituwa tsakaninsa da ƙwayar kakin zuma ba shi da kyau, kuma tasiri da ratayewa ba shi da kyau. Sabili da haka, wajibi ne don ƙara wakili mai laushi don inganta sutura da aikin rataye.
Defoamer. Har ila yau, wani surfactant ne wanda manufarsa ita ce kawar da kumfa mai iska a cikin wakili na wetting.
Mai tace hatsi. Zai iya tabbatar da gyaran hatsi na simintin gyare-gyare da inganta kayan aikin simintin gyaran kafa.
Sauran abubuwan haɗin gwiwa:wakili mai dakatarwa, alamar bushewa, wakili mai dorewa, da dai sauransu.

 

 

Zaɓin daidaitaccen rabo na kowane sashi a cikin murfin silica sol shine mabuɗin don tabbatar da ingancin sutura. Abu mafi mahimmanci guda biyu a cikin sutura shine refractories da binders. Matsakaicin tsakanin su biyu shine rabon foda-zuwa-ruwa na sutura. Matsakaicin foda-zuwa-ruwa na fenti yana da babban tasiri akan aikin fenti da harsashi, wanda a ƙarshe zai shafi ingancin simintin. Idan rabon foda-zuwa-ruwa na rufin ya yi ƙasa da ƙasa, rufin ba zai yi yawa sosai ba kuma za a sami ɓangarorin da yawa, wanda zai sa saman simintin ya zama m. Bugu da ƙari, ƙarancin foda-zuwa-ruwa rabon da ya wuce kima zai ƙara ɗabi'ar abin rufe fuska don fashe, kuma ƙarfin harsashi zai yi ƙasa kaɗan, wanda a ƙarshe zai haifar da zubewar narkakkar ƙarfe yayin simintin. A gefe guda, idan rabon foda-zuwa-ruwa ya yi yawa, rufin zai kasance mai kauri sosai kuma ruwa zai zama mara kyau, yana da wuya a sami sutura mai kauri da kauri mai dacewa.

Shirye-shiryen sutura wani muhimmin bangare ne na tabbatar da ingancin harsashi. Lokacin da aka tsara abin rufewa, abubuwan da aka gyara ya kamata a tarwatsa su daidai kuma a hade su sosai kuma a jika juna. Kayan aikin da aka yi amfani da su don ƙirar fenti, adadin adadin da aka yi da kuma lokacin motsawa duk zai shafi ingancin fenti. Shagon simintin saka hannun jarinmu yana amfani da mahaɗa masu ci gaba. Don tabbatar da ingancin suturar, lokacin da duk abubuwan da ke cikin rufin sun kasance sababbin kayan da aka kara da su, dole ne a motsa murfin na dogon lokaci.

Kula da kaddarorin kayan kwalliyar silica sol shine muhimmin matakin kula da ingancin inganci. Dole ne a auna danko, yawa, zafin yanayi, da sauransu na fenti aƙalla sau uku a rana, kuma yakamata a sarrafa shi cikin kewayon da aka saita a kowane lokaci.