A matsayin ainihin aiwatar da simintin gyare-gyare, dakayayyakin samar dazuba jarisuna da daidaiton girman girman girma da ƙananan ƙimar ƙimar ƙasa. Simintin saka hannun jari shine simintin sifa na kusa. Musamman lokacin da aka yi amfani da silica sol azaman albarkatun kasa don yin gyare-gyaren harsashi, ana iya tabbatar da ingancin simintin saka hannun jari. Don haka, tsarin simintin saka hannun jari na silica sol ana ɗaukar shi da ƙarikarfe tushe.
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 masu siffar zobe kuma suna da diamita na 6-100nm. 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%. Domin shawo kan gazawar dogon zagaye na yin harsashi na siliki sol, an samar da siliki mai bushewa da sauri a cikin 'yan shekarun nan. 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.
Matsayin juriyar juzu'i na simintin saka hannun jari na iya kaiwa CT4 ~ CT7. Daga cikinsu, da girma haƙuri maki najefa karfe zuba jari simintin gyaran kafa, Simintin saka hannun jari na baƙin ƙarfe, simintin saka hannun jari na tushen nickel da simintin saka hannun jari na tushen tushen cobalt gabaɗaya CT5 ~ CT7. Matsayin juriya na girma na ƙarfe haske dajan karfe gami zuba jari simintin gyaran kafaiya isa CT4 ~ CT6.
| HAKURI JIN JINI | |||
| Inci | Millimeters | ||
| Girma | Hakuri | Girma | Hakuri |
| Har zuwa 0,500 | ±.004" | Har zuwa 12.0 | ± 0.10mm |
| 0.500 zuwa 1.000" | ±.006" | 12.0 zuwa 25.0 | ± 0.15mm |
| 1.000 zuwa 1.500" | ±.008" | 25.0 zuwa 37.0 | ± 0.20mm |
| 1.500 zuwa 2.000" | ±.010" | 37.0 zuwa 50.0 | ± 0.25mm |
| 2.000 zuwa 2.500" | ±.012" | 50.0 zuwa 62.0 | ± 0.30mm |
| 2.500 zuwa 3.500" | ±.014" | 62.0 zuwa 87.0 | ± 0.35mm |
| 3.500 zuwa 5.000" | ±.017" | 87.0 zuwa 125.0 | ± 0.40mm |
| 5.000 zuwa 7.500" | ±.020" | 125.0 zuwa 190.0 | ± 0.50mm |
| 7.500 zuwa 10,000" | ±.022" | 190.0 zuwa 250.0 | ± 0.57mm |
| 10.000 zuwa 12.500" | ±.025" | 250.0 zuwa 312.0 | ± 0.60mm |
| 12.500 zuwa 15.000 | ±.028" | 312.0 zuwa 375.0 | ± 0.70mm |
Lokacin aikawa: Fabrairu-03-2021