Dalilan fashewar ƙirar zobe suna da rikitarwa kuma ya kamata a bincika dalla-dalla; duk da haka, ana iya taƙaita su cikin dalilai kamar haka:
1. Ya haifar da zobe mutu abu da kuma mara inganci
1)Abubuwan da aka yi amfani da su a cikin zobe sun mutu yana daya daga cikin mahimman dalilai. A halin yanzu, zobe na kasar Sin ya mutu yana amfani da 4Cr13 da 20CrMnTid, wadanda suke da kwanciyar hankali. Duk da haka, akwai daban-daban masana'antun na kayan. Don kayan abu ɗaya, za a sami wasu bambance-bambance a cikin abubuwan ganowa, wanda zai shafi ingancin ƙirar zobe.
2)tsarin ƙirƙira. Wannan hanya ce mai mahimmanci a cikin tsarin masana'anta. Domin high-alloy kayan aiki karfe molds, akwai yawanci bukatun ga metallographic tsarin kamar carbide rarraba a cikin kayan. Hakanan ya kamata a sarrafa kewayon zafin ƙirƙira, a tsara ƙayyadaddun ƙayyadaddun bayanai na dumama, yakamata a ɗauki ingantattun hanyoyin ƙirƙira, sannan a yi saurin sanyaya ko cirewa cikin lokaci bayan ƙirƙira. Hanyoyin da ba bisa ka'ida ba na iya haifar da fashe cikin sauƙi a jikin zobe na mutu.
3)Shiri don maganin zafi. Dangane da kayan da bukatun da mold, shirye-shiryen zafi magani matakai kamar annealing da quenching da tempering ana amfani da su inganta tsarin, kawar da tsarin lahani a cikin ƙirƙira da blanks, da kuma inganta processability. Dace shiri zafi magani na high carbon gami mold karfe iya kawar da cibiyar sadarwa carbides, spheroidize da kuma tace da carbide, da kuma inganta uniform carbide rarraba. Wannan zai taimaka tabbatar da ingancin quenching da tempering da kuma kara rayuwar mold.
2. Ring mutu maganin zafi
1)quenching da fushi. Wannan babbar hanyar haɗi ce a cikin maganin zafi mai ƙura. Idan overheating faruwa a lokacin quenching da dumama, shi ba zai haifar da mafi girma brittleness na workpiece, amma kuma sauƙi sa nakasawa da fatattaka a lokacin sanyaya, tsanani shafi rayuwar mold. Ya kamata a sarrafa ƙayyadaddun ƙayyadaddun tsarin aikin zafi kuma a yi amfani da maganin zafi mai zafi. Ya kamata a aiwatar da zafin jiki a cikin lokaci bayan quenching, kuma ya kamata a ɗauki matakai daban-daban na zafin jiki bisa ga buƙatun fasaha. ;
2)damuwa taimako annealing. Kamata ya yi a yi amfani da gyaggyarawa don rage damuwa bayan an yi aikin injin don kawar da damuwa na cikin gida da ke haifar da muguwar injin don guje wa nakasar da ta wuce kima ko tsagewar da ke haifarwa ta hanyar quenching. Don gyare-gyare tare da buƙatun madaidaicin madaidaicin, ana buƙatar jin daɗin jin daɗin damuwa bayan niƙa, wanda ke da fa'ida don tabbatar da daidaiton ƙirar da haɓaka rayuwar sabis.
3. Matsakaicin buɗewa na ƙirar zobe
1)Idan adadin buɗewar zobe ya mutu ya yi yawa, yiwuwar fashewar zobe zai karu. Kowane ƙera ƙirar zobe zai sami babban bambance-bambance saboda matakan jiyya na zafi daban-daban da matakai. Gabaɗaya, samfuran kamfaninmu na iya haɓaka ƙimar buɗewa da kashi 2-6% dangane da ƙirar ƙirar ƙirar gida ta farko, kuma suna iya tabbatar da rayuwar sabis na ƙirar zobe.
4. Ring mutu lalacewa
1)Lokacin da zobe ya mutu zuwa wani kauri kuma an rage ƙarfin zuwa wurin da ba zai iya jure wa matsa lamba na granulation ba, fashewa zai faru. Ana ba da shawarar cewa a maye gurbin mutuwar zobe a cikin lokacin da aka sawa zoben ya mutu har zuwa inda matsin abin nadi ya zube.
5. Amfani da zobe mutu
1)A lokacin aikin granulation na zobe ya mutu, ba za a iya barin adadin kayan da ke shiga ya yi aiki a nauyin 100% ba saboda babban fitarwa na zobe ya mutu da kansa. Irin wannan aiki na dogon lokaci da ƙarfin gaske kuma zai haifar da fashewar zoben da ya mutu. . Muna ba da shawarar sarrafa kaya a 75-85% don tabbatar da rayuwar sabis na zobe ya mutu.
2)Idan zoben ya mutu kuma an matse abin nadi sosai, fashewa na iya faruwa cikin sauƙi. Gabaɗaya, muna buƙatar nisa tsakanin zobe ya mutu da abin nadi na matsa lamba ya kamata a sarrafa tsakanin 0.1-0.4mm.
6. Sundries
1) Ana iya yin faɗuwa yayin da abubuwa masu wuya kamar tubalan ƙarfe suka bayyana a cikin kayan granulated.
7. Ring mutu shigarwa da granulator al'amurran da suka shafi
1) Ba a shigar da zoben zobe sosai ba kuma akwai tazara tsakaninsa da na'urar girki. Mutuwar zobe kuma na iya fashe yayin aikin granulation.
2) Bayan maganin zafi, ƙirar zobe za ta zama nakasa sosai. Idan ba a gyara ba, ƙirar zobe za ta fashe yayin amfani.
3) Lokacin da granulator kanta yana da lahani, kamar babban shaft na granulator girgiza, da dai sauransu.
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Lokacin aikawa: Janairu-25-2024