Girman rarrabuwar danyen yashi yana tasiri sosai ga ingancin simintin gyare-gyare. Lokacin amfani da grit mai ƙarfi, narkakkar ƙarfe yana ƙoƙarin kutsawa cikin ainihin grit, yana haifar da ƙarancin simintin simintin. Yin amfani da yashi mafi kyau zai iya samar da mafi kyawun simintin simintin gyare-gyare, amma yana buƙatar ƙarin adadin abin ɗaure, kuma a lokaci guda yana rage karfin iska na ainihin, wanda zai iya haifar da lahani. Gabaɗaya aikin simintin yashi, musamman lokacin da ake amfani da yashin silica, ɗanyen yashi gabaɗaya yana cikin kewayon girman mai zuwa:
Matsakaicin fineness 50-60 AFS (matsakaicin girman barbashi 220-250 μm): mafi kyawun inganci da ƙarancin amfani da ɗaure
Fine foda (kasa da raga 200) abun ciki ≤2%: na iya rage adadin abin ɗaure
Laka abun ciki (barbashi abun ciki kasa da 0.02mm) ≤0.5%: na iya rage adadin dauri
Rarraba girman barbashi: 95% na yashi yana mai da hankali akan 4th ko 5th sieve: mai sauƙin daidaitawa da rage lahanin kumburi
Ƙunƙarar iska ta bushe yashi: 100-150: rage lahani na pore
yumbu yashi, saboda ta kusan zagaye barbashi siffar, m fluidity, high iska permeability, da kuma halaye na fadi da barbashi size rarraba da guda-raga hade hadawa a cikin samar tsari, a simintin gyaran kafa yi, ban da bin sama na kowa halaye. akwai nasa halaye na musamman na gradation ya sa ya zama 'yanci daga rarrabuwar kawuna yayin sufuri da sufuri; yana da kyau rigar ƙarfi a aikace-aikace na kore mold yashi da ba-gasa guduro yashi. Don tsarin simintin yashi ta hanyar amfani da masu ɗaure, yin amfani da rarrabawar multi-sieve yana sanya ƙananan barbashi cika rarrabuwa tsakanin manyan ɓangarorin da kuma shigar da juna, yana haɓaka "gadar haɗawa" na mai ɗaure, don haka inganta ƙarfin haɗin gwiwa, da dai sauransu. Hanya ce mai tasiri.
Taƙaita aikace-aikacen yashi yumbu fiye da shekaru 20, buƙatun girman barbashi da rarraba yashi yumbu da aka yi amfani da su a cikin matakai daban-daban na simintin gyare-gyare an jera su kamar haka:
● RCS (Yashin yumbu mai Rufe Guduro)
Ana amfani da ƙimar AFS na 50-70, 70-90, da 90-110, ana rarraba su a cikin 4 ko 5 sieves, kuma maida hankali yana sama da 85%;
● Ba a gasa guduro yashi
(Ciki har da furan, alkali phenolic, PEP, Bonnie, da dai sauransu): Ana amfani da AFS 30-65, 4 sieves ko rarraba sieves 5, maida hankali ya wuce 80%;
● Tsarin Kumfa mai Bace/Tsarin Samar da Nauyin Nauyi
10/20 raga da raga 20/30 an fi amfani da su, wanda zai iya inganta haɓakar iska, tabbatar da sake yin amfani da yashi na yumbu bayan an zuba, da rage yawan amfani;
● Tsarin Yashi Mai sanyi
AFS 40-60 an fi amfani dashi, rarraba tare da 4 ko 5 sieves, kuma maida hankali yana sama da 85%;
● 3D Sand Buga
Ana rarraba sieves guda 2, har zuwa 3 sieves, tare da maida hankali fiye da 90%, yana tabbatar da kauri mai yashi iri ɗaya. Matsakaicin fineness yana rarraba ko'ina bisa ga amfani daban-daban
Lokacin aikawa: Maris 27-2023
