Batun ilimi na daya:
Mold zafin jiki: Ya kamata a preheated da mold zuwa wani zafin jiki kafin samarwa, in ba haka ba za a yi sanyi lokacin da babban zafin jiki na karfe ruwa yana cike da mold, haifar da zafin jiki gradient tsakanin ciki da kuma waje yadudduka na mold ya karu, haifar da thermal. damuwa, yana haifar da farfajiyar ƙirar don tsage ko ma tsage. A lokacin aikin samarwa, yawan zafin jiki yana ci gaba da tashi. Lokacin da mold zafin jiki ne overheated, mold m yana yiwuwa ya faru, da motsi sassa rashin aiki, haifar da lalacewa ga mold surface. Ya kamata a saita tsarin sarrafa zafin jiki mai sanyaya don ci gaba da aiki da ƙirar ƙira a cikin takamaiman kewayon.
Ilmi batu na biyu:
Alloy Cike: Ruwan ƙarfe yana cike da babban matsa lamba da babban gudu, wanda ba makawa zai haifar da mummunan tasiri da yashwa akan ƙirar, don haka haifar da damuwa na inji da damuwa na thermal. A yayin aiwatar da tasirin, ƙazanta da iskar gas a cikin narkakkar ƙarfen kuma za su haifar da hadaddun tasirin sinadarai a saman ƙura, da kuma hanzarta faruwar lalata da fasa. Lokacin da narkakkar da aka nannade da gas, zai fara fadada a cikin low-matsa lamba yankin na mold rami. Lokacin da matsin iskar gas ya karu, fashewar ciki yana faruwa, yana fitar da barbashi na karfe a saman kogon mold, haifar da lalacewa, da fasa saboda cavitation.
Batun ilimi na uku:
Buɗe Mold: Yayin aiwatar da cibiya da buɗewa, lokacin da wasu abubuwa suka lalace, damuwa na inji shima zai faru.
Batun ilimi na hudu:
Tsarin samarwa:
A cikin tsarin samar da kowane ɓangaren simintin simintin allo na aluminum, saboda musayar zafi tsakanin ƙura da ƙura, canje-canjen zafin jiki na lokaci-lokaci yana faruwa a saman ƙirar, yana haifar da faɗaɗawar zafi na lokaci-lokaci da raguwa, yana haifar da damuwa na thermal lokaci-lokaci.
Alal misali, yayin da ake zubawa, saman gyambon yana fuskantar matsananciyar damuwa saboda dumama, kuma bayan an buɗe gyare-gyaren kuma an fitar da simintin gyare-gyaren, fuskar ƙirar tana fuskantar damuwa mai tsanani saboda sanyaya. Lokacin da aka maimaita wannan sake zagayowar damuwa, damuwa a cikin ƙirar zai zama girma da girma. , Lokacin da damuwa ya wuce iyakar rushewa na kayan aiki, raguwa zai faru a saman ƙirar.
Batun ilimi na biyar:
Simintin gyare-gyare: Wasu gyare-gyaren kawai suna samar da ƴan ɗari kaɗan kafin tsagewa su bayyana, kuma tsagewar suna tasowa da sauri. Ko kuma yana iya zama cewa kawai girman girman da aka tabbatar a lokacin ƙirƙira, yayin da dendrites a cikin karfe suna doped tare da carbides, shrinkage cavities, kumfa da sauran sako-sako da lahani waɗanda aka shimfiɗa tare da hanyar sarrafawa don samar da streamlines. Wannan tsarin yana da mahimmanci ga ƙarewar ƙarshe a nan gaba. Nakasawa, tsagewa, gatsewa yayin amfani, da halayen gazawa suna da babban tasiri.
Batun ilimi na shida:
Za a iya kawar da danniya da aka haifar yayin juyawa, niƙa, tsarawa da sauran aiki ta hanyar cirewa ta tsakiya.
Ilmi batu na bakwai:
Ana haifar da danniya a lokacin nika na karfe da aka kashe, ana haifar da zafi a lokacin nika, kuma ana haifar da Layer mai laushi da decarburization, wanda ke rage ƙarfin haɓakar thermal kuma sauƙi yana haifar da fashewa mai zafi. Don fashewar farko, bayan niƙa mai kyau, ana iya dumama karfen HB zuwa 510-570 ° C kuma a riƙe shi na awa ɗaya don kowane 25mm na kauri don kawar da damuwa.
Batun ilimi na takwas:
EDM machining yana haifar da danniya, kuma wani nau'i mai walƙiya mai walƙiya mai wadata a cikin abubuwan lantarki da abubuwan dielectric an kafa su a saman mold. Yana da wuya kuma mai karye. Wannan Layer da kansa zai sami fasa. Lokacin da EDM machining tare da danniya, ya kamata a yi amfani da babban mita don yin kai tsaye Layer Layer mai haske ya rage zuwa ƙarami kuma dole ne a cire shi ta hanyar gogewa da fushi. Ana yin zafin zafin a matakin zafin jiki na uku.
Ilmi batu na tara:
Tsare-tsare yayin sarrafa gyare-gyare: Maganin zafin da bai dace ba zai haifar da fashewar ƙwayar cuta da kuma ɓarkewar wuri. Musamman idan kawai quenching da tempering da ake amfani da ba tare da quenching, sa'an nan da surface nitriding tsari da ake yi, surface fasa zai bayyana bayan da dama dubu mutu simintin gyaran kafa. da fashewa. Damuwar da aka haifar bayan kashewa shine sakamakon babban matsayi na damuwa na thermal yayin aikin sanyaya da kuma tsarin tsarin yayin canjin lokaci. Danniya mai kashewa shine sanadin nakasawa da tsagewa, kuma dole ne a yi fushi don kawar da damuwa.
Batun ilimi na goma:
Mold yana ɗaya daga cikin mahimman abubuwa guda uku a cikin samar da simintin simintin gyare-gyare. Ingancin amfani da kyallen kai tsaye yana shafar rayuwar ƙirar, ingantaccen samarwa da ingancin samfur, kuma yana da alaƙa da farashin simintin mutuwa. Don taron bita na simintin simintin gyare-gyare, kulawa mai kyau da kula da ƙira shine garanti mai ƙarfi don ingantaccen ci gaba na samarwa na yau da kullun yana dacewa da kwanciyar hankali na ingancin samfur, yana rage farashin samar da ganuwa zuwa babban matsayi, kuma ta haka yana haɓaka haɓakar samarwa.
Lokacin aikawa: Juni-28-2024
