Khoom Taw Qhia

Nodulation txoj kev rau GS400-12 poob ciab peev casting ntawm nodular cam khwb cia hlau

Spheroidal graphite yog tau los ntawm spheroidization thiab inoculation kev kho mob, uas txo cov splitting nyhuv ntawm graphite ntawm lub matrix, zoo txhim kho cov neeg kho tshuab zog ntawm cam khwb cia hlau, thiab tau txais high plasticity, toughness thiab lub zog. Ductile hlau yog ib yam ntawm cov khoom muaj zog cam khwb cia hlau tsim nyob rau hauv 1950s, nws cov kev ua tau zoo nyob ze rau hlau, nws yog raws li nws cov kev ua tau zoo heev, tau ua tiav siv rau qee qhov nyuaj, lub zog, tawv, hnav tsis kam ntawm siab. ntu. Ductile hlau tau tsim sai sai rau hauv cov khoom siv hlau cam thib ob rau grey hlau thiab dav siv. Cov neeg muaj kev xav tau ntau dua thiab siab dua rau cov khoom ntawm cov khoom siv hlau. Hauv kev tsim cov hlau nplaum tuaj yeem siv ntau txoj hauv kev kho nodularization, cov kev kho nodularization muaj qhov zoo thiab qhov tsis zoo, xav tau kev lag luam engineers raws li cov khoom tsim nyog tsim nyog xaiv cov ntawv thov.

Txoj kev siab ntxiv magnesium

Txij li thaum lub boiling point ntawm magnesium (1107 degree) yog tsawg thiab nyuaj rau yaj nyob rau hauv cov kua hlau, thiab qhov kub ntawm cov kua hlau muaj peev xwm ncav cuag 1500 degree thaum lub sij hawm spheroidization, magnesium yog ib qho yooj yim rau react hnyav nyob rau hauv cov kua hlau, uas ua rau nws tsis tshua muaj absorbed tus nqi. Thaum lub siab ntawm qhov nruab nrab nyob ib ncig ntawm magnesium nce, qhov kub ntawm magnesium nce ntxiv, qhov kub ntawm magnesium txo, thiab qhov nqus ntawm magnesium nce. Raws li txoj cai no, lub siab ntxiv rau magnesium txoj kev tau tsim. Raws li kev sib txawv ntawm kev tsim kho siab, nws tuaj yeem muab faib ua lwm hom siab thiab nws tus kheej tsim siab hom ob hom siab ntxiv rau magnesium txoj kev. Kev siv sab nraud thaum ntxov yog tso cov pob kho mob uas muaj cov kua hlau hauv lub tank kaw, thiab txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau nws yog qhov yuav tsum tau tshem tawm cov kab mob. Lwm qhov yog siv magnesium vapor nyob rau hauv cov kua hlau pob ntawv nws tus kheej tsim siab, qhov tom kawg yog ntxiv cov magnesium ntshiab rau hauv cov ntawv ntim cov kua hlau, magnesium nyob rau hauv cov kua hlau pob ntawv sai sai tsim cov magnesium vapor ntau, cov vapor los ntawm cov kua hlau ib feem ntawm qhov nqus ntawm cov hlau, lwm qhov ntawm kev khiav tawm thiab tsim kom muaj lub siab vapor siab sib xws rau qhov kub thiab txias ntawm cov kua hlau hauv qhov chaw hauv pob ntawv, ces magnesium tsis boiling vaporization thiab poob lawm. Qhov zoo ntawm txoj kev siab ntxiv rau magnesium yog tias kev siv cov ntshiab magnesium nodulation kev kho mob, qhov nqus ntawm magnesium yog siab, mus txog 70% mus rau 80%, thiab tsis muaj pa luam yeeb hauv cov txheej txheem kho, thiab qhov chaw ua haujlwm zoo. . Qhov tsis zoo yog cov khoom siv ua haujlwm siab thiab cov nqi; Kev ua haujlwm yog qhov nyuaj thiab nruj; Lub sijhawm kho yog ntev thiab cov kua hlau yog txias dua. Nyob rau hauv tus txheej txheem ntawm spheroidization, lub siab yog siab, thiab muaj kev huam yuaj yog yooj yim tshwm sim.

Txoj kev plunger

Txoj kev thrust yog feem ntau siv spheroidizing txoj kev kho mob hauv tsev thiab txawv teb chaws. Cov pob kev kho mob siv feem ntau yog pob dike spheroidization. Txhawm rau txo qhov kev siv ntawm cov tshuaj tiv thaiv ntawm cov kua hlau thiab magnesium thiab evaporation tus nqi ntawm magnesium vapor, txoj kev txhaj tshuaj feem ntau yog siv cov hlau nodulator nrog cov ntsiab lus magnesium tsawg. Hauv kev kho spheroidizing, tus neeg sawv cev spheroidizing yog thawj zaug thauj mus rau ib sab ntawm lub pas dej, uas yog them nrog ferrosilicon alloy, me ntsis nruj, thiab tom qab ntawd them nrog cov hlau tsis muaj xeb, daim hlau lossis lwm cov ntaub npog. Thaum spheroidizing, cov kua hlau yuav tsum tau ntws mus rau sab nraud ntawm lub pob ntawv kua hlau kom ntau li ntau tau. Qhov nqus ntawm magnesium txhaj yog feem ntau 30% ~ 50%. Txhawm rau txhim kho cov nyhuv spheroidization, qhov sib piv ntawm cov pob kho qhov siab tuaj yeem nce ntxiv. Siv tsawg magnesium alloy spheroidizing tus neeg saib xyuas; Tsim nyog ua kua hlau kub thiab npog koob. Qhov zoo ntawm txoj kev xuas nrig ntaus yog txoj kev kho thiab cov cuab yeej siv tau yooj yim, yooj yim rau kev khiav lag luam, muaj kev hloov pauv ntau dua hauv kev tsim khoom, thiab cov ntsiab lus uas yuav tsum tau muaj kuj tsawg, tab sis qhov tsis txaus yog tias magnesium lub teeb thiab cov pa phem hauv cov txheej txheem. spheroidization yog qhov hnyav dua; Qhov nqus ntawm magnesium yog tsawg.

Subcontract method

Subcontracting yog txheej txheem spheroidizing tsim thiab patented los ntawm GeorgeFischer. Txoj kev siv cov magnesium ntshiab raws li tus neeg sawv cev nodulizing, uas yog tsim rau kev kho mob ntawm cov kua hlau uas muaj leej faj cov ntsiab lus, thiab muaj peev xwm cais magnesium sulfide, magnesium silicate thiab lwm yam impurities los ntawm cov kua hlau zoo dua, magnesium thiab hlau cov tshuaj tiv thaiv yog tsis nruj heev, hlau ua kua txias yog tsawg dua, kev siv kev nyab xeeb, thiab qhov nqus ntawm magnesium tuaj yeem ncav cuag 60% ~ 80%. Cov txheej txheem tshwj xeeb ntws yog tias ua ntej spheroidizing kev kho mob, tus neeg ua haujlwm subcontractor yog thawj zaug dag horizontally, cov kua hlau ntau yog txhaj, thiab tom qab ntawd tus neeg sawv cev spheroidizing ntxiv rau cov tshuaj tiv thaiv chamber, kaw cov cuab yeej kaw, thiab lub hau npog. Lub sijhawm no, cov kua hlau nkag mus rau hauv cov tshuaj tiv thaiv chamber los ntawm lub qhov me me ntawm cov tshuaj tiv thaiv chamber. Tus nqi ntws yog cuam tshuam rau thaj tsam ntawm lub qhov me me thiab qhov siab zoo li qub hauv lub hnab ua kua hlau. Magnesium vaporizes thaum rhuab, tsim magnesium vapor siab nyob rau hauv cov tshuaj tiv thaiv chamber. Thaum lub siab tshaj qhov siab ntawm hydrostatic siab ntawm cov hlau nyob rau hauv lub ladles, cov kua hlau nres thiab nkag mus, thiab lub latent cua sov ntawm magnesium vaporization txo qhov kub nyob rau hauv cov tshuaj tiv thaiv chamber. Lub vapor siab kuj txo qis, thiab cov kua hlau nkag mus rau hauv cov tshuaj tiv thaiv chamber dua, thiab cov kev cai tsis siv neeg no tuaj yeem ua rau cov magnesium hnov ​​​​mob nrog cov kua hlau zoo. Tsis tas li ntawd, lub qhov me me ntawm cov tshuaj tiv thaiv chamber nyob rau hauv cov txheej txheem subcontracting yog ib qho yooj yim los thaiv los ntawm cov kua hlau los yog molten slag, yog li nws yog ib qho nyuaj rau kev ntxuav thiab tswj qhov loj ntawm lub qhov me me, thiab cov txheej txheem spheroidization yog qhov nyuaj rau kev kho mob tsis tu ncua. kua hlau.

Cored hlau pub txoj kev

Cov tub ntxhais-fed hlau txoj kev yog thawj zaug siv hauv kev lag luam steelmaking, thiab tom qab ntawd cov cuab yeej siv tau txuas mus rau kev lag luam casting. Tam sim no, lub teb chaws tsim muaj nyob rau hauv zus tau tej cov hlau ductile feem ntau siv hlau noj technology, tab sis nyob rau hauv lub domestic daim ntawv thov ntawm lub tshuab rau zus tau tej cov hlau ductile pib lig, nyob rau hauv zus tau tej cov ductile hlau tsis tau lug siv, nyob rau hauv lub nce qib. theem. Daim ntawv thov ntawm hlau pub txoj kev los tsim cov hlau ductile yog tsuas yog ntxig cov cored hlau coated nrog magnesium thiab lwm yam alloying ntsiab ncaj qha mus rau hauv cov kua hlau rau spheroidizing kev kho mob los tsim cov hlau, thiab tag nrho cov txheej txheem spheroidizing tuaj yeem ua tiav. Feem ntau siv cov tub ntxhais hlau txoj kab uas hla feem ntau yog 9 hli, 13 hli, thiab cov hmoov hlau ua ke feem ntau muaj 25% txog 30% magnesium. Thaum muaj qhov xav tau tshwj xeeb, qee qhov nyiaj ntawm RE, Ca, Ba, thiab lwm yam, yog ntxiv los txhim kho kev ua haujlwm ntawm cov casting. Cov hlau feeder tuaj yeem teeb tsa tsis xws li xaim pub ceev, xaim pub ntev, xaim pub hom, thiab lwm yam. Thaum lub sij hawm ua cov txheej txheem, cov hlau feeder txuas ntxiv ntxig cov tub ntxhais hlau rau hauv cov kua hlau coated raws li cov txheej txheem kev teeb tsa los ntawm kev sib kis. . Vim tias cov nyhuv siab tshwm sim los ntawm qhov siab ntawm cov kua hlau, qhov ua tau zoo ntawm cov huab cua sib cais los ntawm lub hau npog, thiab qhov txuas txuas ntxiv ntawm cov tub ntxhais hlau rau hauv cov kua hlau ntawm ib qho ceev, qhov no tsis tuaj yeem zam qhov tawg tam sim ntawd. ntawm magnesium vapor, xyuas kom muaj kev nyab xeeb ntxiv ntawm magnesium alloy, tab sis kuj zam kom tsis txhob muaj ntau ntawm magnesium khiav thiab hlawv, thiab txhim kho qhov nqus ntawm magnesium hauv cov kua hlau. Feem ntau hais lus, kev ua tau zoo thiab kev ua tau zoo ntawm cov hlau cored hlau, nrog rau kev pub ceev thiab cov nyiaj pub dawb yog qhov tseem ceeb los xyuas kom meej qhov ua tiav ntawm kev kho cov xov paj spheroidization. Cov duab ntawm cov khoom siv kho mob, qhov kub ntawm cov kua hlau, cov ntsiab lus ntawm cov tshuaj sulfur ntawm cov kua dej hauv Tshuag, thiab kev sib khi ntawm lub hau kuj tseem ceeb cuam tshuam rau cov nyhuv ntawm spheroidizing kev kho mob. Qhov zoo ntawm spheroidizing kev kho mob ntawm cov tub ntxhais-fed hlau yog: zoo desulfurization thiab deoxidation nyhuv, tsis tshua muaj cua txias, so kom txaus qhov yuav tsum tau ntawm raw hlau kua; Qhov nqus ntawm magnesium yog siab thiab ruaj khov, thiab qhov hloov pauv ntawm cov ntsiab lus magnesium residual yog me me. Cov hmoov av thiab magnesium lub teeb nyob rau hauv tus txheej txheem ntawm spheroidization yog tsawg. Tus nqi ntawm alloy ntxiv tuaj yeem raug thiab tswj tau.

Cladding txoj kev

Cov txheej txheem txheej tau tsim los ntawm British Iron Research Association thiab tau siv dav hauv kev tsim cov hlau hlau txawv teb chaws. Nyob rau hauv cov txheej txheem nodulation, cov hlau yog ntxiv rau tib yam li hauv txoj kev xuas nrig ntaus, thiab tom qab ntawd lub hau npog tau muab tso rau ntawm lub hnab kho mob thiab nws cov perimeter raug kaw, thiab cov kua hlau yog txhaj rau hauv lub hau, thiab cov kua hlau yuav raug kaw. ntws mus rau hauv lub hnab los ntawm cov hlau txhaj tshuaj nyob rau sab ntawm lub hau (cov kua hlau yuav tsum tsis txhob ncaj qha rau ntawm lub alloy pawg). Nyob rau hauv txoj kev no, cov roj sab nraud tuaj yeem raug cais tawm ntawm lub pob, txo cov oxidation thiab hlawv ntawm magnesium, txhim kho qhov nqus ntawm magnesium (feem ntau 60% mus rau 65% lossis ntau dua), thiab txhim kho qhov chaw ua haujlwm. Tom qab cov tshuaj tiv thaiv nodularization, lub hau raug tshem tawm. Muaj kev sib raug zoo ntawm cov nyhuv nodulization thiab qhov kev xaiv raug ntawm kev txhaj tshuaj lub qhov taub. Qhov tseeb txhaj tshuaj ntawm cov kua hlau tuaj yeem ua kom ntseeg tau tias qhov siab ntawm cov kua hlau tau khaws cia hauv lub hau. Lub sij hawm ntawm tag nrho cov kua hlau mus rau hauv lub hau yog tib yam li lub sij hawm ntawm spheroidization. Cov txheej txheem npog tsis tsuas yog khaws cov khoom zoo ntawm cov cuab yeej siv yooj yim thiab kev ua haujlwm yooj yim, tab sis kuj kov yeej qhov tsis zoo ntawm txoj kev xuas nrig ntaus, xws li magnesium oxidation burning poob, tsis tshua muaj absorbing tus nqi, loj noj nodule tus neeg saib xyuas thiab ua hauj lwm tsis zoo. Tau ntau xyoo, cov neeg ua haujlwm nrhiav tau siv qhov zoo ntawm cov txheej txheem txheej txheej los tsim cov hlau nplaum, thiab lawv tau sim ua kom dhau qhov tsis txaus ntawm txoj kev kho nodular hauv kev siv: txheej txheej yog qhov nyuaj rau kev nqa, thiab kev ua haujlwm nyuaj; Qhov hnyav ntawm cov kua hlau yog qhov nyuaj rau kev txheeb xyuas qhov tseeb thaum cov hlau txuas ntxiv yog rub los ntawm cupola. Tom qab kev txhim kho tas mus li, cov txheej txheem spheroidization tau nthuav dav thiab siv.

Txoj kev Intraflow

Tus neeg sawv cev nodulating yog muab tso rau hauv ib qho tshwj xeeb tsim cov tshuaj tiv thaiv chamber nyob rau hauv lub pouring system. Thaum lub sij hawm pouring txheej txheem, cov kua hlau ntws los ntawm cov tshuaj tiv thaiv chamber thiab reacts nrog nodulating tus neeg saib xyuas mus nqa tawm nodulating kev kho mob. Txhawm rau kom muaj kev ruaj ntseg ntawm spheroidizing kev kho mob thiab txo qhov kub hnyiab, qhov ntev ntawm cov tshuaj tiv thaiv chamber thiab pouring system yuav tsum nruj me ntsis suav. Feem ntau, cov tshuaj tiv thaiv chamber nyob rau hauv cross runner nyob rau hauv lub ncaj khiav. Magnesium absorption tus nqi siab, mus txog 70% ~ 80%, tsis muaj magnesium lub teeb, tsis muaj pa luam yeeb, tsis muaj nodularization poob, haum rau mechanized ntau lawm kab. Nws qhov tsis zoo yog tias nws muaj cov kev cai nruj rau cov kua hlau kub, cov ntsiab lus ntawm cov tshuaj sulfur, nodulator muaj pes tsawg leeg, nodulator thaiv qhov loj, cov tshuaj tiv thaiv chamber loj thiab qhov rooj kaw lus tsim, thiab hloov maj mam hloov ntawm cov yam ntxwv no yuav ua rau muaj kev hloov pauv ntawm cov nyhuv nodulator. Tsis tas li ntawd, txoj kev no yooj yim los tsim slag suav nrog.

Zhongwei Precision muaj cov kev pabcuam hauv qab no

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Copper Silica Sol Investment Casting

Peb yog cov chaw tsim khoom ntawm "GS400-12 Ductile hlau castings", yog tias koj xav tau cov ntaub ntawv ntxiv thov hu rau peb!