Kev tsom xam lub thoob cov hniav ua hauj lwm lub ntsej muag thiab cov khoom excavated tiv tauj, nyob rau hauv ib tug ua tiav excavation txheej txheem nyob rau hauv txawv kev ua hauj lwm theem ntawm nws txawv kev nyuaj siab tej yam kev mob.Thaum cov hniav ntaj thawj kov cov khoom nto, lub thoob cov hniav ntxeev yog muaj kev cuam tshuam zoo heev vim nws ceev ceev.Yog hais tias lub yield zog ntawm thoob cov hniav yog tsawg, yas deformation yuav tshwm sim ntawm qhov kev nyuaj siab ntawm cov hniav bucket. hloov.Thaum lub thoob cov hniav txiav cov khoom, lub thoob hniav thiab cov khoom tshwm sim txheeb ze txav, ua rau qhov loj heev zoo extrusion siab rau ntawm qhov chaw, yog li ua rau lub loj kev sib txhuam quab yuam ntawm lub thoob hniav ua hauj lwm lub ntsej muag thiab cov khoom.Yog hais tias cov khoom yog hard pob zeb, pob zeb, thiab lwm yam, kev sib txhuam yuav loj heev.Qhov tshwm sim ntawm kev rov ua haujlwm ntawm cov txheej txheem sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov txheej txheem no ua rau lub ntsej muag sib txawv. lub furrow nrog ntau dua qhov tob.Bucket hniav muaj pes tsawg leeg zoo cuam tshuam qhov ntev ntawm kev pab cuam lub neej ntawm thoob cov hniav, xaiv thoob cov hniav ntawm chav kawm ntau ceev faj daddus muag thoob cov hniav Kuv kuj siv nws cov thoob cov hniav, cov nyhuv yog zoo!Qhov zoo siab rau pem hauv ntej ua hauj lwm lub ntsej muag yog obviously ntau dua li nyob rau tom qab ua hauj lwm lub ntsej muag, thiab pem hauv ntej ua hauj lwm lub ntsej muag yog phem hnav. Nws tuaj yeem txiav txim siab tias qhov zoo siab thiab kev sib txhuam quab yuam yog qhov tseem ceeb ntawm cov khoom siv sab nraud rau qhov tsis ua haujlwm ntawm cov hniav, uas ua lub luag haujlwm tseem ceeb hauv cov txheej txheem tsis ua haujlwm.
Cov txheej txheem kev soj ntsuam: coj ob qho qauv ntawm lub ntsej muag ua haujlwm sab hauv thiab sab nraub qaum, thiab zom lawv tiaj tus rau kev sim hardness.Nws pom tias qhov tawv ntawm tib tus qauv sib txawv heev, thiab qhov kev txiav txim ua ntej yog cov khoom tsis sib xws.Cov qauv yog hauv av, polished thiab corroded, thiab nws tau pom tias muaj cov ciam teb pom tseeb ntawm txhua tus qauv, tab sis qhov sib txawv ntawm qhov sib txawv ntawm cov qauv, tab sis qhov sib txawv ntawm qhov nruab nrab ntawm cov qauv. ib feem yog tsaus, qhia tias daim yog tej zaum ib tug inlaid casting. Nyob rau saum npoo, qhov chaw nyob ib puag ncig yuav tsum yog ib qho thaiv inlaid.Qhov kev ntsuam xyuas hardness ntawm ob sab ntawm tus ciam teb tau ua tiav ntawm teev-150 digital zaub rockwell hardness tester thiab mhv-2000 digital display microhardness tester, thiab qhov sib txawv tseem ceeb tau pom.Cov khoom nyob ib puag ncig yog ib qho ntxig thaiv thiab ib puag ncig yog ib qho matrix. Lub ntsiab alloy muaj pes tsawg leeg (feem ntau, %) yog 0.38c, 0.91cr, 0.83mn thiab 0.92si.Cov khoom siv ntawm cov hlau yog nyob ntawm lawv cov muaj pes tsawg leeg thiab kev kho cua sov txheej txheem.Qhov zoo sib xws thiab qhov sib txawv ntawm hardness qhia tias lub thoob cov hniav tau muab tso rau hauv kev siv yam tsis muaj cua sov tom qab casting.
Lub koom haum tsom xam ntawm metallographic soj ntsuam pom tau hais tias lub substrate yog cov xim dub zoo lamellar qauv, cov ntaub so ntswg muaj ob feem, fritter dawb thaiv thiab dub, thiab dawb thaiv kom deb ntawm tus ntoo khaub lig seem lub koom haum ntau (thiab ntxiv microhardness test proves tias lub koom haum rau lub ferrite dawb thaj ua rau thaj, dub zoo lamellar qauv ntawm troostite los yog lk trooster hybrid lub koom haum. Nyob rau hauv qhov ntxig yog zoo ib yam li ntawm qee theem hloov chaw nyob rau hauv tshav kub cuam tshuam cheeb tsam ntawm vuam.Raws li qhov kev txiav txim ntawm cov hlau ua kua thaum lub sij hawm casting, cheeb tsam no yog nyob rau hauv austenite thiab ferrite ob-theem cheeb tsam, qhov twg cov ferrite yog tag nrho loj hlob thiab nws cov microstructure yog khaws cia rau hauv chav tsev kub.Vim hais tias lub thoob cov hniav phab ntsa yog tsis tshua muaj qhov ntim ntawm lub hauv paus, tsis muaj qhov sib txawv ntawm qhov loj thiab qhov loj ntawm qhov thaiv. ferrite yog tsim
Kev kuaj hnav ntawm mld-10 coj lub tshuab kuaj pom pom tias qhov hnav tsis kam ntawm matrix thiab ntxig yog zoo dua li ntawm quenched 45 steel nyob rau hauv cov xwm txheej ntawm kev cuam tshuam me me rau kev sim.Meanwhile, hnav tsis kam ntawm matrix thiab cov ntxig yog sib txawv, thiab cov matrix yog hnav-tiv taus ntau dua li qhov ntxig (saib cov lus 2).Qhov muaj pes tsawg leeg ntawm ob sab ntawm matrix pom, nws tuaj yeem ntxig rau hauv lub ntsiab lus. ACTS raws li lub tshuab chiller.In the process of casting, the matrix grain refined to improve its strength and wear resistance.Vim lub zog ntawm casting tshav kub, cov qauv ntawm cov ntxig yog zoo ib yam li cov vuam kub cuam tshuam cheeb tsam.Yog tias kev kho cua sov zoo yog nqa tawm tom qab casting los txhim kho cov qauv ntawm matrix thiab ntxig, hnav tsis kam thiab kev pab cuam lub neej ntawm cov thoob hniav yuav pom tseeb txhim kho.
Post lub sij hawm: Apr-15-2019