Abubuwan da ke Shafar 500MPa Grade VN Microalloyed High-ƙarfi Karfe Bars Properties

Anyi nazarin tasirin abun cikin nitrogen akan kaddarorin inji na 500MPa grade VN microalloyed high-ƙarfi sandunan ƙarfe ta hanyar gwajin samarwa. Sakamakon ya nuna cewa abun cikin nitrogen ya ƙaru daga 81PPM zuwa 269PPM, girman hatsin sandunan ƙarfe bai canza ba sosai, kuma ƙarfin ƙarfin ƙarfe na ƙarfe ya karu daga 526MPa zuwa 607MPa. Ƙarfin yawan amfanin ƙasa ya ƙaru da kashi 15.4%; ƙarfin ƙarfi ya ƙaru daga 678MPa zuwa 738MPa, kuma ƙarfin ƙaruwa ya ƙaru da 8.8%; ƙarfin ƙarfin-yawan amfanin ƙasa ya ragu daga 1.29 zuwa 1.22. Tasirin ƙarfe na nitrogen a cikin manyan sandunan ƙarfe na VN microalloyed galibi yana ƙarfafawa, kuma ƙarfafa hazo shine babban dalilin raguwar ƙarfin ƙarfin amfanin gona na sandunan ƙarfe na VN.

Gabatarwa

A cikin Janairu 2012, Ma'aikatar Gidaje da Ci Gaban Birane da Karkara da Ma'aikatar Masana'antu da Fasahar Sadarwa tare sun ba da wata takarda, suna ba da shawarar jagora kan hanzarta yin amfani da sandunan ƙarfe masu ƙarfi: zuwa ƙarshen 2015, fitowar manyan sandunan ƙarfe masu ƙarfi sun lissafta kashi 80% na jimlar fitowar rebars. Don manyan gine-gine masu girman gaske da manyan gine-ginen jama'a, 500MPa an fi son rebar Grade. Tare da bukatun ginin tattalin arziƙin ƙasata, buƙatun sandunan ƙarfe masu ƙarfi na 500MPa a cikin ginin gini yana ƙaruwa. Saboda saurin samar da sandunan ƙarfe da babban zazzabi mai jujjuyawa, zafin zazzagewa na ƙarshe yawanci sama da 1000 ℃. Halayen fasaharsa sun ƙaddara cewa ƙirar allo na sandunan ƙarfe ya dace da amfani da fasahar microalloying vanadium [1]. Haɓaka nitrogen shine don cimma vanadium. Babban hanyar ƙarfafa sandunan ƙarfe na microalloyed yana dacewa don rage adadin vanadium da adana albarkatun vanadium [2-4]. An yi amfani da fasahar kere-kere ta VN a matsayin babbar fasahar samarwa don haɓaka manyan sandunan ƙarfe na ƙarfe a gida da waje. Yawancin karatu sun nuna [1-9] cewa fasahar kere-kere ta VN galibi tana dogaro ne da haɓaka nitrogen don haɓaka haɓakar vanadium a cikin nau'in carbide na vanadium, vanadium nitride ko vanadium carbonitride, yana samar da tartsatsi mai kyau wanda aka watsa. sakamako mai ƙarfi na hazo mai ƙarfi Don ƙara ƙarfin ƙarfe. Koyaya, ƙaruwa mai yawa a cikin nitrogen zai haifar da wasu lahani na sandunan ƙarfe, musamman alamar aikin girgizar ƙasa na sandar ƙarfe. Ana nazarin tasirin abun cikin nitrogen akan kaddarorin inji na sandunan ƙarfe na microMP na 500MPa VN ta hanyar gwajin samarwa. An bincika tsarin ƙarfafawa na nitrogen a cikin sandunan ƙarfe na VN microalloyed da tasirin nitrogen akan ƙarfi da rabo na sandunan ƙarfe na VN, wanda shine ci gaban manyan sandunan ƙarfe na VN microalloyed.

Samar da tushe don samarwa.

Kayan gwaji da hanyoyin

Don haɓaka sandunan ƙarfe na ƙarfe mai ƙarfi na 500MPa tare da ingantaccen aiki, masana'antar ƙera ƙwallon ƙungiya ta sami nasarar narkar da nau'ikan uku na VN microalloyed steels tare da abun ciki daban-daban na nitrogen, kuma sun yi amfani da tsarin samarwa iri ɗaya (sanyaya na halitta bayan mirgina) don gwada samarwa na sandunan ƙarfe na 500MPa. An sanya sunayen ukun guda uku 1#, 2#, 3#, kuma an nuna manyan abubuwan sunadarai a cikin Table 1.

Daidaita nau'ikan ƙarfe guda uku tare da abun ciki daban -daban na nitrogen da ci gaba da jefa cikin akwatuna tare da keɓaɓɓun bayanai na 150mm × 150mm × 6000mm, aika su zuwa masana'antar mashaya ta ƙungiyar don mirgine cikin sandunan ƙarfe tare da ƙayyadaddun Φ25mm, da kuma shimfiɗa samfuran sandar ƙarfe na 1# , 2#, da 3#A cikin gwaji, an gwada ƙarfin yawan amfanin ƙasa da ƙarfin ƙarfe na ƙarfe uku bi da bi, an ƙididdige ƙarfin ƙarfin ƙarfin ƙarfin 1#, 2#, da 3#sandunan ƙarfe, da tsarin ƙirar ƙarfe na an lura da ƙera uku.

Dangane da sakamakon gwajin tensile na 1#, 2#, da 3#sandunan ƙarfe, an nuna lanƙwasa a cikin Hoto na 1. Kangon da ke cikin Hoto na 1 yana nuna cewa yayin da abun cikin nitrogen ke ƙaruwa, ƙarfin samarwa da ƙarfin ƙarfe na sandunan ƙarfe. karuwa a jere. Ƙarfin ƙarfin ƙarfin 1# sandar ƙarfe shine 526MPa kuma ƙarfin ƙarfi shine 678MPa; Ƙarfin ƙarfin ƙarfe na 2# sandar ƙarfe shine 553MPa kuma ƙarfin ƙarfi shine 698MPa; Ƙarfin ƙarfin ƙarfe na 3# sandar ƙarfe shine 607MPa kuma ƙarfin tensile shine 738MPa. Abubuwan nitrogen sun ƙaru daga 81PPM zuwa 269PPM, ƙarfin ƙarfin ƙarfe na ƙarfe ya karu daga 526MPa zuwa 607MPa, karuwar 81MPa, kuma ƙarfin yawan amfanin ƙasa ya ƙaru da kashi 15.4%; a lokaci guda, ƙarfin ƙaruwa ya ƙaru daga 678MPa zuwa 738MPa, tare da haɓaka 60MPa, kuma ƙaruwar ƙarfin ƙarfi shine 8.8%.

Dangane da ƙarfin yawan amfanin ƙasa da ƙimar ƙarfin ƙarfe na 1#, 2#, da 3#sandunan ƙarfe, ana ƙididdige adadin ƙarfin ƙarfin na ukun bi da bi kuma an shigar da su cikin kwana da aka nuna a cikin Hoto na 2. yana nuna cewa yayin da sinadarin nitrogen ke ƙaruwa, ƙarfin ƙarfi-zuwa-yawan amfanin sandunan ƙarfe yana raguwa a jere. Daga cikin su, ƙarfin ƙarfin samar da ƙarfi na 2#, 1#, da 2#sandunan ƙarfe sune 3, 1.29, da 1.26 a jere.

Sakamakon abun cikin nitrogen akan girman hatsin sandunan ƙarfe

Hoto na 3 yana nuna ƙaramin ƙirar ƙarfe na 1#, 2#, da 3#sandunan ƙarfe. Ana nuna cikakken bayanin ƙananan kayan aikin ƙarfe -ƙarfe guda uku a cikin Table 2. Teburi na 2 ya lissafa abun da ke cikin lokaci da girman girman hatsi na 1#, 2#, 3#sandunan ƙarfe. Tsarin ƙarfe guda uku sune ferrite + pearlite, kuma ƙimar hatsi na ƙarfe 1# ƙarfe shine kusan maki 9 -9.5, 2# rebar girman hatsin ferrite shine kusan kashi 9.5, 3# rebar girman hatsin ferrite shine kusan maki 9-9.5. Bayanai a cikin Teburin 2 suna nuna cewa tare da ƙaruwar abun cikin nitrogen, girman hatsin sandar ƙarfe ba ya canzawa sosai, ko kuma ƙaruwa ta nitrogen ba ta da wani tasiri mai mahimmanci a kan ƙanƙantar da ƙaramin ƙarfe na VN microalloyed.

Tattaunawa da tattaunawa

Analysis na ƙarfafawa na nitrogen a 500MPa sa VN microalloyed karfe

Sakamakon gwajin a cikin wannan labarin yana nuna cewa abun cikin nitrogen na sandunan ƙarfe na baƙin ƙarfe na VMP na 500MPa ya karu daga 81PPM zuwa 269PPM, kuma girman hatsin sandunan ƙarfe kusan 9-9.5. Wato, ƙaruwa a cikin nitrogen ba shi da wani tasiri a bayyane akan tsarin ƙananan sandunan ƙarfe na VN. A lokaci guda, ƙarfin samarwa da ƙarfin ƙarfe na sandunan ƙarfe sun ƙaru zuwa digiri daban -daban, tare da ƙarfin yawan amfanin ƙasa yana ƙaruwa da 81MPa kuma ƙarfin ƙaruwa yana ƙaruwa da 60MPa. A halin yanzu, manyan ka'idojin ƙarfe na kayan ƙarfe sun haɗa da ƙarfafawa mai ƙarfi, ƙarfafa hatsi mai kyau, ƙarfafa canjin lokaci, da ƙarfafa kashi na biyu. A bayyane yake, sakamakon gwajin a cikin wannan labarin a bayyane ya keɓe tasirin ingantaccen hatsi, yayin da ƙarfafawa da ƙarfafawa da sauyin yanayi Tasirin ƙarfafawa kamar ƙarfafawa daidai yake ga ƙarfe uku da aka gwada a cikin wannan labarin, ban da ƙarfafa na biyu lokaci. Adadi da yawa na nazarin ka'idoji da aikace-aikacen sun nuna cewa vanadium yana gyara nitrogen a cikin sinadarin microadium da ke ɗauke da vanadium don samar da vanadium nitride Ko samfuran ɓarna na kashi na biyu kamar vanadium carbonitride, kashi na biyu na ƙarfe yana ƙaruwa da ƙarfi karfe ta hanyar mu'amala tare da zamewar zamewa, wato tasirin ƙarfafa ruwan sama.

Nazarin da ya dace ya nuna cewa ƙara yawan nitrogen yana da amfani ga hazo na vanadium. Wato, nitrogen yana haɓaka haɓakar vanadium kuma yana haɓaka ƙimar juzu'i na ɓangarorin kashi na biyu. Sakamakon bincike mai ɗorewa ya nuna cewa ƙarfin ƙarfe ya yi daidai da ƙimar ƙaramin kashi na kashi ɗaya da rabi. Don haka, lokacin da abun cikin vanadium ya wadatar, ƙaruwar nitrogen a cikin baƙin ƙarfe na VN microalloyed shine ainihin An ƙara ƙarar juzu'i na ɓangarorin sashi na biyu (vanadium nitride, vanadium carbonitride) a cikin ƙarfe, don tasirin ƙarfafa ruwan sama ya fi ƙarfi. Sakamakon gwajin a cikin wannan takarda ya nuna cewa tare da haɓaka abun cikin nitrogen, ƙarfin yawan amfanin ƙasa da ƙarfin ƙarfe na sandunan ƙarfe na ƙarfe na VMP na 500MPa suna ƙaruwa a jere. A bayyane yake, sakamakon gwajin a cikin wannan takarda ya yi daidai da sakamakon binciken ka'idoji masu alaƙa.

Nazarin tasirin nitrogen a kan ƙarfin ƙarfin yawan amfanin ƙasa na 500MPa sa VN microalloyed karfe sanduna

Sakamakon gwajin a cikin wannan takarda ya nuna cewa tare da haɓaka abun cikin nitrogen, ƙarfin yawan amfanin ƙasa da ƙarfin ƙarfe na sandunan ƙarfe na VN microalloyed ba su ƙaruwa daidai gwargwado. Haɓaka ƙarfin ƙarfin amfanin gona shine 15.4%, kuma haɓaka ƙarfin ƙarfi shine 8.8%. Daidai ne saboda ƙaruwar ƙarfin amfanin gona ya fi ƙaruwa da ƙarfin ƙarfi, abin da ke nuna cewa ƙarfin ƙarfin samar da sandunan ƙarfe yana raguwa.

Ƙarfin ƙarfin ƙarfe na kayan ƙarfe da tsarin sarrafa microscopic na ƙarfin ƙarfi a bayyane yake. Yawan sarrafawa yana sarrafawa ta hanyar babban sikelin dislocations a cikin kayan, yayin da karaya ke sarrafawa ta hanyar farawa da yaduwa na microcracks a cikin kayan. . Sabili da haka, nazarin samar da kayan abu galibi yana la'akari da halin rarrabuwa a cikin kayan, yayin da nazarin karayar kayan abu ya fi la'akari da halayen microcracks a cikin kayan. Ƙarfin ƙarfin kayan ƙarfe yana nufin ƙarfi lokacin da aka kunna tushen ɓarna a cikin kayan kuma adadi mai yawa na ƙaura, wanda ke haifar da kayan don samarwa ko samar da wani matakin naƙasa na filastik. Injin ƙarfafa ruwan sama na barbashi na kashi na biyu shine tsarin mu'amala tsakanin barbashi na biyu da ɓarkewar zamiya. An raba wannan tsarin mu'amala a cikin hanyar yanke-yanke da kuma tsarin Orowan, ko dai ta hanyar yanke ko ta hanyar Orowan, na biyu Ruwa na barbashi na lokaci zai hana zamewar rarrabuwar kawuna, ta hakan yana haɓaka ƙarfin samar da karfe. Dangane da ƙarfin ƙarfe na kayan ƙarfe, yana da alaƙa da samuwar da yaduwar microcracks a cikin ƙarfe. Samuwar microcracks ya haɗa da cikas ga motsi na ƙananan wurare, wanda babu makawa zai hana samuwar da haɓaka microcracks Fadada, ta yadda zai inganta ƙarfin ƙarfe na ƙarfe zuwa wani gwargwado. Sabili da haka, yayin da ake inganta ƙarfin ƙarfe, ƙarfin ƙarfin sa kuma yana inganta zuwa wani gwargwado.

An nuna cewa lokacin da girman matakin na biyu yayi ƙanƙanta ƙwarai, tasirin ƙarfafa ruwan sama a ƙara ƙarfin ƙarfe na ƙarfe ya fi tasirin ƙara ƙarfin ƙarfin ƙarfe. Sakamakon gwajin a cikin wannan labarin ya nuna cewa gudummawar ƙarfafa hazo zuwa ƙarfin yawan amfanin ƙasa shine 81MPa, ƙimar gudummawar ƙarfin ƙarfi shine 60MPa. Sakamakon wannan takarda ya tabbatar da cewa gudunmawar ƙarfafa ruwan sama ga ƙarfin yawan amfanin ƙasa ya fi ƙarfin ƙarfi. Bugu da ƙari, ko da ƙarfin ƙarfin ƙarfe da ƙarfin ƙarfe ya ƙaru daidai gwargwado, adadin ƙarfe zai ragu. Gabaɗaya, tasirin ƙarfafa ruwan sama na barbashi na lokaci na ƙarshe zai rage ragin yawan ƙarfe. Sabili da haka, tare da ƙaruwar abun cikin nitrogen, ƙarfin ƙarfin hazo na ƙarfafawa na sandar ƙarfe na VN, ƙananan ƙarfin ƙarfin amfanin gona na sandar ƙarfe.

Hasken binciken yana haifar da haɓaka ƙarfin ƙarfin girgizar ƙasa na 500MPa

A cikin sakamakon gwajin wannan labarin, abun cikin nitrogen na 500MPa sa VN microalloyed karfe sanduna shine 81PPM, 136PPM, 269PPM, kuma ƙarfin sandar ƙarfe daidai da yawan amfanin ƙasa shine 1.29, 1.26, 1.22, wato, ƙarfi da yawan rabo na Ƙananan sandunan ƙarfe na VN sun bambanta tare Yayin da abun cikin nitrogen ke ƙaruwa da raguwa, an riga an yi cikakken bincike na dalilan. A halin yanzu, babban jigon aikin girgizar ƙasa na manyan sandunan ƙarfe na ƙarfe na ƙarfe ana buƙatar su kasance ƙasa da 1.25. Don haka, daga sakamakon binciken wannan labarin, don haɓaka 500MPa class VN micro-alloyed high-ƙarfi anti-seismic karfe sanduna, domin tabbatar da babban jigon aikin girgizar ƙasa mai ƙarfi Idan yawan amfanin ƙasa ya cancanta, nitrogen abun ciki yakamata a sarrafa shi sosai dangane da abubuwan sunadarai. Ya fi dacewa don sarrafa abun cikin nitrogen tsakanin 130PPM.

Kammalawa

• 1) Yayin da abun cikin nitrogen ke ƙaruwa, ƙimar hatsi na babban ƙarfin ƙarfe na VN microalloyed ba ya canzawa sosai.
• 2) Ƙarfin yawan amfanin ƙasa da ƙarfin ƙarfe na VN microalloyed high-ƙarfi sandunan ƙarfe suna ƙaruwa tare da haɓaka abun cikin nitrogen, amma ƙarfin ƙarfin ƙarfin yana raguwa tare da haɓaka abun cikin nitrogen.
• 3) Ƙarfin ƙarfi na nitrogen a cikin manyan sandunan ƙarfe na VN microalloyed galibi yana ƙarfafawa, kuma ƙarfafa hazo shine babban dalilin raguwar ƙarfin ƙarfin samar da sandunan ƙarfe na VN.
• 4) Domin ci gaban 500MPa sa VN microalloyed high-ƙarfi seismic karfe sanduna, da nitrogen abun ciki a cikin karfe ya kamata a sarrafa a cikin 130PPM.

Da fatan za a adana tushe da adireshin wannan labarin don sake bugawa: Abubuwan da ke Shafar 500MPa Grade VN Microalloyed High-ƙarfi Karfe Bars Properties

Minghe Kamfanin 'Yan Wasa Masu Mutu aka sadaukar domin tsirar da samar da inganci da kuma high yi Gyare sassa (karfe mutu simintin sassa Range yafi hada da Thin-Wall Mutu Wasa,Hot Chamber Mutu Wasa,Cold Chamber Mutu Wasa), Zagaye Sabis (Mutuwar 'Yan Wasa,CNC machining,Motsa Motsa, Jiyya na sama) .Adadin al'ada Aluminium ya mutu, magnesium ko Zamak / zinc mutu simintin gyare-gyare da sauran buƙatun simintin maraba don tuntube mu.

Karkashin kulawar ISO9001 da TS 16949, Ana aiwatar da dukkan matakai ta hanyar daruruwan injunan jefa simintin da suka mutu, injunan axis 5, da sauran kayan aiki, tun daga masu fashewa zuwa na’urar Ultra Sonic masu wanki.Minghe ba kawai tana da kayan aiki na zamani ba amma kuma tana da kwararru ƙungiyar ƙwararrun injiniyoyi, masu aiki da sufetoci don tabbatar da ƙirar abokin ciniki ta zama gaskiya.

Manufactureran kwangilar masana'antar mutu. Abubuwan haɓakawa sun haɗa da sassan sanyi na sassan mutuɗar aluminum daga 0.15 lbs. zuwa 6 lbs., saurin canje-canje da aka saita, da aikin inji. Sabis-ƙarin ayyuka sun haɗa da gogewa, faɗakarwa, lalatawa, fashewar harbi, zane, zane, rufi, haɗuwa, da kayan aiki. Abubuwan da aka yi aiki tare sun haɗa da allo irin su 360, 380, 383, da 413.

Zinc ya mutu don jefa ƙirar ƙira / sabis na injiniya tare. Custom manufacturer na daidaici tutiya mutu simintin gyaran kafa. Castananan 'yan simintin gyare-gyare, pressurean ƙwanƙwasa masu juzu'in juzu'in simintin gyare-gyaren juzu'ai, ƙera simintin gyare-gyare na al'ada, ɓangaren mutu da' yan wasa masu mutuwa masu zaman kansu da ƙofar da aka hatimce za a iya ƙera su. Za'a iya kerarrar 'yan simintin a tsayi da faɗi har zuwa 24 a ciki. A cikin +/- 0.0005 a cikin. Haƙuri.  

ISO 9001: 2015 bokan masana'anta ta mutu magnesium, Abubuwan haɓaka sun haɗa da matsin lamba na magnesium mai matsi mai yawa har zuwa tan 200 mai ɗumi mai zafi & 3000 ton mai sanyi, ƙirar kayan aiki, gogewa, gyare-gyaren, inji, foda & zanen ruwa, cikakken QA tare da damar CMM , taro, marufi & isarwa.

ITAF16949 bokan. Servicearin Sabis ɗin Gyare Hadawa zuba jari,yashi,Kushin nauyi, Stauren ɓoye ɓoye,Siffar Centrifugal,Cast Vacuum,Dindindin Mould Gyare, .Hanyoyin iyawa sun hada da EDI, taimakon injiniya, ingantaccen samfuri da aiki na sakandare.

Fitar Masana'antu Abubuwan Nazarin sassa don: Motoci, Bikes, Jirgin sama, kayan kiɗa, Jirgin ruwa, Na'urorin hangen nesa, na'urori masu auna sigina, na'urori masu auna sigina, Na'urori, Kayan lantarki, ,unshi, Clocks, Inji, Injiniya, Kayan Kaya, Kayan Jiki, Jigs, Telecom, Haske, Kayan aikin likita, Na'urar daukar hoto, Robobi, Sassaka, kayan sauti, kayan wasanni, Kayan aiki, Kayan wasa da ƙari. 

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By Minghe Mutu Wasa Wasa | Categories: Labarai masu Taimakawa |Material Tags: Gyare Aluminum, Zinc Gyare, Fitar Magnesium, Castan Wasanni, Bakin Karfe Cast, Fitar tagulla,Gyare Tagulla,Fitar Bidiyo,Tarihin Kamfanin,Aluminum Mutu Gyare | Comments Off