1. Fashewa akan sassan jan karfe da aka jefa

Zafafan ɓarkewar gami yana nufin halayen gami don samar da fasa a babban zafin jiki. Yana ɗaya daga cikin lahani na yau da kullun na wasu simintin gawa na jan ƙarfe. Yawancin lokaci, siffar zafi mai zafi yana da ƙarfi kuma ba bisa ka'ida ba, kuma yana faruwa tare da iyakar hatsi. Fuskar da ta fashe sau da yawa tana da ƙarfi sosai kuma ba ta da wani ƙarfe.

Dangane da matsayinsa a kan simintin gyare-gyare, ana rarraba tsagewar zafi zuwa waje da ciki. Tsagewar waje sau da yawa yana farawa a wuraren da ba daidai ba a saman simintin gyare-gyare, kaifibaki, canje-canje a cikin kauri na sashe, da sauran wurare masu kama da inda damuwa zai iya faruwa. A hankali yana kara zuwa cikin simintin, tare da faffadan saman da kunkuntar ciki, kuma wani lokacin yana tafiya cikin dukkan sashin simintin. Tsagewar ciki yana faruwa a wuri mai ƙarfi na ƙarshe a cikin simintin gyaran kafa. Gabaɗaya, ba zai ƙara zuwa saman simintin ba. Fuskar tsagewar ba ta da daidaituwa sosai, sau da yawa yana da cokali mai yatsu da yawa.tare da wuta Digiri na oxidation fiye da na tsagewar waje.

Gabaɗayayarda cewa zafi mai zafi na gami yana faruwa a lokacin ƙarfafawa, wato, lokacin da aka haɓaka yawancin kayan haɗin gwiwa, amma akwai ƙaramin adadin ruwa tsakanin dendrites. A wannan lokacin, raguwar layin layi na allo yana da girma, kuma ƙarfin ƙarfin yana da ƙasa. Idan gyare-gyaren simintin gyaran kafa ya hana raguwar sa, simintin zai haifar da damuwa mai girma wanda ke aiki a wuri mai zafi. Lokacin da nau'in a wuri mai zafi ya fi ƙarfin da aka yarda da ita a wannan zafin jiki, zafi mai zafi zai faru.

Duk da haka, don irin wannan gami, ko fashewar zafi yana faruwa a cikin simintin gyare-gyare sau da yawa ya dogara da dalilai kamar juriya na mold, tsarin simintin gyare-gyare, aikin zubar da ruwa da sauransu. A cikin aikin simintin simintin gyare-gyare, duk wata hanya da za ta iya rage yawan damuwa da kuma inganta ƙarfin zafin jiki na gami zai taimaka wajen hana faruwar fashewar zafi. Saboda haka, a cikin ainihin samarwa, ingantattun matakan da suka dace kamar ƙara yawan amfanin ƙasa, inganta tsarin mold,ingantawa Matsayin da aka gabatar da gami a cikin mold, kuma ana ɗaukar kafaɗaɗɗen ƙarfafa haƙarƙari da sanyaya yawanci don guje wa fashewar zafi. Thehali na zafi mai tsauri abin da ya faru na gami ya dogara da kaddarorin gami kanta. Gabaɗaya magana, babban bambanci tsakanin zafin jiki wanda cikakken kwarangwal dendrite ya fara samuwa a lokacin aikin ƙarfafawa da zafin jiki a ƙarshen ƙarfafawa, da kumagirmashrinkage kudi na gami a wannan lokacin, damafi girmada zafi fasa hali na gami.

2. Juriya na matsin lamba

Rashin ƙarancin juriya na simintin gyare-gyare yana nufin zubar da matsi daga ciki ko waje na simintin lokacin da aka matsa lamba akan simintin, wanda zai iya bayyana kamar zubar mai, zubar iska, zubar ruwa, da dai sauransu yana daya daga cikin mafi wahala. matsalolin da za a warware a cikin lahani na simintin gyare-gyare, kuma dalilin zai iya zama lahani da haɗuwa da lahani iri-iri.

Lokacin da aka nutsar da simintin a cikin ruwa, rami na ciki na simintin yana cike da matsewar iska. Jirgin da aka danne yana wucewa ta hanyar da aka samu ta hanyar lahani na ciki, lahani na ciki da lahani na waje na simintin ruwa zuwa saman ruwa, kuma kumfa suna bayyana, suna nuna rashin ƙarfi.juriya.

A cikin simintin gyare-gyaren gami da jan ƙarfe, buƙatun ƙaƙƙarfan gami suna da girma, don haka haɓaka juriya na hydraulic na simintin simintin ƙarfe na jan ƙarfe da guje wa ɗigogi ya zama mabuɗin samarwa. Bayan tabbatar da samarwa, idan dai wani kauri na kristal na columnar ko madaidaicin daidaicied An samo tsarin crystal a sashin simintin gyare-gyare, aikin juriya na hydraulic zai iya saduwa da bukatun amfani. Koyaya, lu'ulu'u na columnar suna da sauƙin samu a ƙarƙashin saurin sanyaya yanayi kuma da wahala a samu ƙarƙashin yanayin simintin yashi gabaɗaya. Tsarin lu'ulu'u na ginshiƙi da aka samu ta ƙara yawan zafin jiki don takamaiman simintin gyare-gyare yana da tasiri a fili. Zazzaɓi zazzabi na simintin jan karfe yana da ƙasa, tsarin gami yana kwance, matsalar ɗigowar simintinmai tsanani, da kuma "gwanin gumi" da tsagewar zafi suna faruwa lokaci zuwa lokaci.

Wyana karawa zub da zafin jiki, tsarin simintin gyare-gyaren kristal mai yawa ne,Ta haka ne ƙwararren casting samu.