Hanyar Bayyanawa Mai sauri Na Nodular Cast Iron Spheroidizing Quality

Buga Lokaci: 06 / 28 2021 Mawallafi: Editan Yanar Gizo Ziyarci: 11477

Dubawa kafin tanderu

Dubawa kafin tanderun baƙin ƙarfe ductile wani yanki ne mai mahimmanci na tsarin samarwa, kuma yana da alaƙa kai tsaye da ingancin sassan baƙin ƙarfe. Za'a iya yin hukunci da warkar da baƙin ƙarfe akan lokaci kuma daidai, kuma ana iya ɗaukar matakan da sauri don sarrafa ingancin baƙin ƙarfe na nodular. Ba daidai ba a gaban tanderu zai sa a soke babban adadin simintin gyare-gyare kuma a ɓata lokacin mutum. Sabili da haka, yanke hukunci daidai da daidai na spheroidization a gaban tanderun yana da mahimmanci fiye da dubawa bayan tanderun. Akwai hanyoyi da yawa da aka saba amfani da su a cikin ainihin samarwa don bincika spheroidization na narkakken ƙarfe kafin tanderun.

1 Hanyar ɓawon burodi da hanyar yanke hukunci da harshen wuta

Rare ƙasa magnesium nodular simintin ƙarfe yana da ƙarancin abun cikin magnesium da abubuwan da ba a saba gani ba a cikin ƙasa. Farfajiyar narkakken baƙin ƙarfe ya bambanta da baƙin ƙarfe na nodular simintin ƙarfe. Babu sikelin oxide da yawa a saman, kuma harshen wuta ba shi da ƙarfi da ƙarfi. Koyaya, lokacin da aka ƙara 1/3 na baƙin ƙarfe, hasken magnesium da farin harshen wuta zasu tsere daga saman ruwa, wanda yake kamar kyandir. Dangane da lamba da tsayin wutar, ana yanke hukunci game da yanayin spheroidization da sauran adadin magnesium. Mafi girman harshen wuta kuma mafi ƙarfi, yana nuna cewa spheroidization yana da kyau. Musamman lokacin da ake zubawa, ana iya ganin ƙarfe mai zafi daga narkakken ƙarfe, idan tsayinsa ya kai 25 ~ ffice: smarttags " /> 50mm, spheroidization yana da kyau; idan harshen wuta bai wuce 15mm ba, spheroidization ba shi da kyau. Daga aiki A saman narkakken nodular simintin ƙarfe, an samar da fim ɗin oxide kuma akwai tabo mai haske mai launin azurfa, wanda ke nufin cewa spheroidization yana da kyau. baƙin ƙarfe ne low.

2 Hanyar toshe gwajin gwaji mai kusurwa uku

A halin yanzu, hanya ce da aka saba amfani da ita don yin hukunci akan spheroidization ta hanyar lura da toshe gwajin. Tubalan gwajin da masana'antu daban -daban ke amfani da su suna da sifofi da girma dabam -dabam, kuma yawancin masana'antu suna amfani da tubalan gwajin kusurwa uku. Dangane da halayen samarwa na masana'antar mu, girma da kauri na simintin gyare-gyare, girman yanki mai girman shingen gwajin kusurwa uku shine 12.5mm (ƙasa) × 50mm ((tsayi). Ф15mm, Ф25mm, Ф30mm. Ƙarfe. Bayan an gama maganin ruwa, yi amfani da cokali na samfur don fitar da ruwan daga saman narkakken ƙarfe 200mm a ƙasa kuma a zuba shi a cikin toshe gwaji kuma a sanyaya shi zuwa ja mai duhu kafin ruwa ya kashe. Haɗin waje na ƙwallon ƙwal ya fi girma girma fiye da baƙin ƙarfe simintin launin toka. Fitowar tana da tsabta, mai haske kuma tana da yashi sosai. Toshin gwajin alwatika na siminti na tsaye yana da raguwa a ɓangarorin biyu na farfajiyar gidan da ke kwance a kwance ko ƙuntataccen gwajin gwajin akan Bayan sanyaya da ƙwanƙwasawa, spheroidization yana da kyau, kuma yana da farin azurfa ko azurfa mai launin toka. tip ɗin a sarari yake kuma farin bakin yana kwance a tsakiya. wakili wil Ina samar da ƙarin carbides. A wannan lokacin, lokacin da aka sanya shingen gwajin, zai yi sautin “patting”. Yankin gwajin zai karye lokacin da aka taɓa shi da sauƙi kuma sabon carbide da aka taɓa zai sami bakin kauri. Odor, saboda haka, ya fi kyau a yi iyo kan siliki yayin zubarwa. Idan bakin yana da launin toka-azurfa kuma ana rarraba ƙananan baƙaƙen baƙaƙe, yana da lu'ulu'u masu launin idan an karye.

lura:

1) Toshin gwajin alwatika na spheroidized zai sami warin sinadarin carbide nan da nan bayan an katse shi ta hanyar kashewa.
2) Zurfin bakin baki yana da alaƙa da nau'in da nau'in baƙin ƙarfe mai ɗorawa da abun da ke narkar da baƙin ƙarfe. Don haka, ba a bayar da bayanai a cikin tebur ba. Farin bakin zurfin baƙin ƙarfe magnesium ductile baƙin ƙarfe ba a bayyane yake ba.

3 Hukuncin tsarin zuba

(1) Bayan an zub da baƙin ƙarfe mai ɗamarar ƙarfe a cikin kwandon, idan an murƙushe ƙwal ɗin ƙasan zuwa ƙasa kuma farfajiyar tana da santsi sosai, yana nuna cewa spheroidization yana da kyau; idan ɓangaren sama na kofin sprue yana da harsashi mai ƙarfi, shi ma za a sake ajiye shi. Dumin zafin baƙin ƙarfe ya yi ƙasa.
(2) A lokacin aikin zubarwa, akwai ramuka (ramuka) a cikin ramin zagaye da aka watsa akan farfajiyar yashi, yana nuna cewa spheroidization yana da kyau.

4 Hanyar gane baki baki

Bayan an sarrafa ƙwallon, yi amfani da cokali samfurin don zub da shingen gwaji tare da kauri kusan 10mm, kuma sanyaya shi zuwa ja mai duhu. Bayan kashewa da fashewa, idan an sami baki baki a saman saman shingen gwajin, yana nufin cewa spheroidization ba shi da kyau, kuma kaurin baki baki, ƙwallon Mafi muni narkewa, koma bayan tattalin arziki zai faru. A wannan lokacin, idan zafin zafin baƙin ƙarfe ya yi yawa, ana iya ƙara gami. Hakanan ana iya gani daga shingen gwajin cewa idan gefen gefen shingen gwajin ya kasance mai siffar arc tare da ɓacin rai a tsakiya, kuma akwai wasu wrinkles, hakanan yana nuna cewa spheroidization yana da kyau; idan akwai digo masu kama da alkama a saman farfajiyar gwajin, yana nuna Bakin da aka narkar da shi yana ƙonewa kuma yana da sauƙin lalacewa. A wannan yanayin, dole ne a canza murhu.

5 Ka lura da matsayin karfafan ƙarfe

Bayan an gama warkar da cutar, fitar da ƙaramin ƙarfe mai narkar da shi kuma a zuba shi a cikin ƙirar ƙarfe ind30mm. Dubi bayyanar narkakkar baƙin ƙarfe daga farfajiya yayin ƙarfafawa, kuma ku yi hukunci akan ɓarkewar baƙin ƙarfe gwargwadon yawan baƙin ƙarfe. Good spheroidized narkakkar baƙin ƙarfe yana nuna babban fa'idar faɗakarwa a lokacin ƙarfafawa. Farfaɗen baƙin ƙarfe yana saukowa kaɗan a farkon ƙarfafawa, kuma ƙaramin ƙarfe mai narkewa yana fitowa daga cikin akwati bayan an rufe farfajiyar; yayin da baƙin ƙarfe mai narkar da baƙin ƙarfe Yawan gushes daga saman ƙarami ne.

6 Saurin duba allolographic a gaban murhu

Hanyoyin da aka ambata a sama duk suna amfani da wasu halaye na baƙin ƙarfe na ductile don yin hukunci a kaikaice akan spheroidization, amma yanayi daban-daban na samarwa ya bambanta ƙwarai, kuma hanyoyin da aka bayyana suna da iyakancewa, da saurin lura da ƙirar ƙarfe a gaban tanderun na iya guje wa abubuwa da yawa. Tsoma baki, kai tsaye lura da yanayin spheroidization.

Metallographic dubawa bayan makera

(1) Binciken bayan ƙarfe-ƙarfe na musamman yana lura da ƙaramin tsari kamar ƙirar ƙirar hoto da ƙaramin fasalin ƙirar matrix ƙarfe. Ta hanyar bincike na ƙarfe ƙarfe, ana iya amfani da adadin sassan da suka karye a matsayin tushe don inganta ingancin simintin.
(2) Hakanan ana iya cewa binciken sinadarin sunadarai na ƙarancin ƙasa magnesium spheroidal graphite simintin baƙin ƙarfe shine hanyar ganowa. Idan an sami matsala, ma'aikatan batching na iya yin gyare -gyaren da suka dace don gujewa manyan matsalolin inganci. Bugu da kari, akwai gwajin kaddarorin inji da gwajin da ba a lalata na sassan baƙin ƙarfe.

Kammalawa

Don duba baƙin ƙarfe mai ɗorewa, yakamata a canza hanyar binciken gargajiya na "nazarin bayan-tanderu" zuwa "binciken kan layi na ainihi." A matsayin babban kamfani mai matsakaici da matsakaici, yin amfani da ingantattun hanyoyin dubawa a gida da waje don tantance yanayin spheroidization tabbataccen garanti ne don haɓaka ingancin simintin. Koyaya, ga ƙananan kamfanoni, musamman kamfanonin garin da ke tasowa cikin sauri, har yanzu yana da mahimmancin amfani don amfani da wani sifa na baƙin ƙarfe don yin hukunci a kaikaice akan spheroidization.

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