Vacuum simintin gyaran kafa yana da wasu sunaye da yawa kamar simintin da aka rufe, simintin yashi mara kyau,V aiwatar da simintin gyaran kafada V, kawai saboda mummunan matsi da aka yi amfani da su don yin simintin simintin. Yana da matuƙar mahimmanci don bincika hanyoyin yin simintin gyaran kafa don babban madaidaicin bangon bakin cikifɓatattun sassan simintin ƙarfesaboda matakan suna taimakawa wajen rage yawan amfani da makamashi, adana albarkatun kasa da rage nauyin injin. Don cimma waɗannan manufofin, an haɓaka hanyoyin yin simintin gyare-gyare da yawa. Vacuum-hatimin gyare-gyaren tsari, tsarin V-a takaice, ana amfani dashi sosai don yin simintin ƙarfe da ƙarfe tare da bangon bakin ciki mai ɗanɗano, daidaitaccen wuri da santsi. Koyaya, ba za a iya amfani da tsarin simintin ɗumbin ruwa don zuba ba karfe simintin gyaran kafatare da ƙananan kauri na bango, saboda cikawar ƙarfen ruwa a cikin rami mai ƙura ya dogara ne kawai akan matsi mai tsayi a cikin tsarin V. Haka kuma, tsarin ba zai iya samar da simintin gyare-gyaren da ke buƙatar daidaiton girman girma ba saboda ƙayyadaddun ƙarfin matsi na ƙirar.
Domin inganta ƙarfin cika narkakken ƙarfen ruwa da kuma ƙara ƙarfin matsi na mold, mun ƙirƙiri sabuwar hanyar simintin simintin gyare-gyare mai suna azaman simintin gyare-gyaren da aka rufe a ƙarƙashin matsin lamba. Ko da yake wannan tsarin simintin ya dogara ne akan tsarin V, ya bambanta saboda a cikin aiwatar da ƙarfen ruwa ya cika kuma yana ƙarfafawa a cikin injin da aka rufe a ƙarƙashin babban matsi. Ta hanyar amfani da hanyar, an samar da simintin ƙarfe tare da bangon bakin ciki, ƙasa mai santsi da ingantattun ma'auni cikin nasara.
Mold yayi amfani da wannan sabontsarin simintin motsiyayi kama da wanda ake amfani dashi don tsarin V-na kowa. Bayan an yi samfurin, an sanya shi cikin jirgi. Ta hanyar cire iska ta hanyar bututu mai ƙarewa, ana iya kiyaye matakin injin a cikin ƙima a ƙayyadaddun ƙimar. Ana zuba karfen ruwa a cikin ledar da ke cikin jirgin. Sa'an nan kuma a rufe jirgin ruwa; kuma matsa lamba na iska a cikin jirgin yana ƙara zuwa ƙimar da aka ƙayyade ta hanyar watsa iska ta hanyar tashar. Bayan haka, ana zuba ƙarfen ruwa a cikin rami na ƙura ta hanyar juya hannun rocker. A lokacin aiwatar da cikawa da ƙarfafawa, ana ci gaba da shayar da iskar da ke cikin ƙirar ta cikin bututu kuma ana kiyaye ƙirar a cikin yanayi mara kyau. Daga baya, ƙarfen ruwa ya cika kuma yana ƙarfafawa ƙarƙashin babban matsi.
Gabaɗaya magana, ana iya ƙirƙirar ƙirar kuma a kiyaye shi daga rushewa lokacin da bambancin matsa lamba fiye da 50 kPa. Ayyukan allon huɗa mai haɗa ramin ƙira zuwa tsohon shine haɓaka ƙarfen ruwa da ke gudana a cikin rami ta hanyar jawo iskar gas ko iska daga ramin ƙura ta busasshen yashi a cikin mold. Lokacin da akwai irin wannan allon iska, bambancin matsa lamba yana raguwa yayin zubarwa; amma har yanzu ya fi 150 kPa, fiye da 50 kPa. Sabili da haka, allon huɗa baya lalata aikin fim ɗin filastik akan abin da ake iya jurewa.
Don haka ana iya amfani da tsarin PV don samar da simintin simintin ƙarfe na simintin bango da simintin ƙarfejefa simintin gyaran ƙarfetare da babban madaidaici. A cikin samar da simintin aiki na yau da kullun ana amfani da wasu hanyoyin gama gari don haɓaka ƙarfin cika ƙarfen ruwa, gami da ƙara matsa lamba na ƙarfen ruwa, don ƙara yawan zafin ƙirjin da ƙara matsa lamba. Rage matsa lamba a cikin m tsohon rami kuma hanya ce mai tasiri don ƙara ƙarfin cikawa.
Ƙarfin matsi a cikin wannan sabon nau'in tsarin simintin injin yana haifar da bambancin matsa lamba tsakanin ciki da wajen ƙirar. Babban bambancin matsa lamba, mafi girman juzu'i a tsakanin hatsin yashi, kuma mafi wahalar motsin hatsin yashi da juna, yana haifar da mafi girman ƙarfin matsi. Ƙarfin matsawa yana da fa'ida wajen samar da simintin gyare-gyare tare da daidaiton girman girma da ƙasa ko rashin lahani.
Ko da yake hanyoyin kamar haɓaka abun ciki mai ɗaure, gasa koren mold da yin amfani da yashi mai haɗaɗɗiyar guduro duk na iya inganta ƙarfin matsi, za su kuma ƙara farashin samarwa sosai. A karkashin yanayin zafi mai zafi, fim ɗin filastik da ke saman ramin ƙura yana yin laushi kuma ya narke, sannan fim ɗin ya ƙafe kuma ya bazu cikin yashi mai ƙyalƙyali a ƙarƙashin tasirin bambance-bambancen matsa lamba, kuma a cikin tsari ƙirar ta rasa ƙarfin hana iska a hankali. Irin wannan tsari ana kiran shi azaman tsarin ƙona-rasa na fim ɗin filastik. Abubuwa da yawa suna shafar saurin kona-rasa na fim ɗin filastik, kamar nau'in da kauri na fim ɗin filastik, girman simintin, bambancin matsa lamba tsakanin ciki da waje na mold, zafin narkakken ruwa na ƙarfe da ko akwai shafi Layer a kan fim ɗin filastik. Duk da haka, lokacin da aka fesa Layer Layer a kan fim ɗin, saurin ƙonawa yana raguwa sosai kuma ƙirar tana da kyawawan kayan tabbatar da iska.
Lokacin aikawa: Janairu-24-2021