Lub teb chaws cov qauv qhia cov kev cai zoo rau cov kav hlau kav, tab sis qee cov kav hlau kav hauv khw tsis ua raws li cov cai no.
Tshawb xyuas cov laj thawj
Firstly, the spheroidization rate of ductile iron does not meet the requirements, resulting in a low structural density and ferrite appearing as plates in the material.
Qhov thib ob, vim hais tias cov kua hlau txias sai heev thaum lub sij hawm casting txheej txheem, 15% -25% ntawm eutectic carbon yog generated nyob rau hauv cov qauv raws li nws solidifies sai, thiab tawg nto ntawm cov khoom pov thawj "dawb hlau tsim".
Txhawm rau txhim kho qhov elongation ntawm cov kav hlau hlau, kev sib tsoo feem ntau yog ua nyob rau hauv qhov kub siab - kub nruam annealing rauv kom tshem tawm qhov tsim ntawm eutectic carbides.
Cov duab ntawm cov khoom tsis zoo ☟
Unannealed ductile hlau feem ntau pom cov kev hloov hauv qab no hauv lub cev:
Thaum lub sij hawm kev thauj mus los, hoisting, thiab kev teeb tsa, cov kav hlau kav hlau yuav tsim cov kab nrib pleb lossis thaiv kev puas tsuaj vim muaj kev cuam tshuam sab nraud (kev cuam tshuam, pob zeb, pob zeb rov qab, thiab lwm yam). Qhov no yog tshwm sim los ntawm tus nqi qis spheroidization, tsis muaj annealing, thiab qis elongation ntawm cov khoom siv hlau. Kev saib xyuas hnyav yuav tsum tau ua thaum lub sijhawm teeb tsa.
Annealing yog ib kauj ruam tseem ceeb hauv kev txhim kho kev ua tau zoo thiab zoo ntawm cov kav hlau kav hlau.
Txhim kho cov khoom siv kho tshuab
Tom qab annealing, nws cov microstructure ua zoo ib yam, uas tuaj yeem txhim kho lub zog tensile thiab hardness ntawm cov kav hlau hlau thaum tuav lub siab toughness.
Tshem tawm cov ntaub so ntswg ntawm lub qhov ncauj
Centrifugal ductile hlau kav dej txias sai heev thaum lub sij hawm casting, uas yooj yim ua rau cov tsim ntawm dawb cam khwb cia hlau qauv. Annealing tuaj yeem tshem tawm cov qauv no thiab ua rau cov qauv nrog siab -toughness ferrite li matrix.
Txhim kho lub koom haum
Annealing tuaj yeem txhawb nqa graphitization, decompose eutectoid cementite hauv pearlite, thiab tau txais ferritic matrix ductile hlau nrog siab plasticity thiab toughness, yog li optimizing lub mechanical zog ntawm ductile hlau kav, nrog rau hardness thiab lub zog.
Tshem tawm kev ntxhov siab sab hauv
Annealing tuaj yeem tshem tawm cov kev ntxhov siab sab hauv hauv cov castings, tso cai rau cov kav dej kom muaj qhov ruaj khov thiab cov qauv, ua kom muaj kev ntseeg tau ntev -.
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Annealing ho txhim kho qhov kev ua tau zoo thiab zoo ntawm cov kav hlau kav hlau. Annealed ductile hlau kav yuav tsum tau metallographic tsom xam thiab kev soj ntsuam kev ua tau zoo los xyuas kom meej lawv microstructure thiab mechanical zog raws li lub teb chaws tus qauv.
Ductile hlau yeeb nkab network khoom thiab muab kev pabcuam
Raws li ib tug siab - zoo ductile hlau yeeb nkab hom, Jintai Hongye boasts zoo heev cov khoom zoo, nruj txheej txheem ntau lawm, thiab ib tug zoo kev lag luam lub koob npe nrov, muab koj nrog txhim khu kev qha cov khoom thiab tom qab- muag kev pab cuam.
Cov khoom zoo thiab tus nqi tswj xyuas kom muaj kev ntseeg tau zoo.
Tag nrho cov khoom lag luam kev tswj xyuas lub neej muaj kev qhia dav tom qab - kev muag khoom.
Muaj ntau txoj kev thauj mus los muaj: freight, hiav txwv freight, thiab rail freight.
