Vim nws cov ntsiab lus carbon siab, cov qauv tsis sib xws, thiab tsis tshua muaj plasticity, cam khwb cia hlau yog suav tias yog cov khoom siv tsis zoo weldability. Thaum lub sij hawm vuam txheej txheem, qhov tsis xws luag xws li pob dawb, kab nrib pleb, thiab qhov pores yog qhov tshwm sim. Yog li ntawd, cam khwb cia hlau vuam kho kuj yuav tsum tau ib tug siab ntawm kev txawj ntse los ntawm lub welder. Cam khwb cia hlau vuam kho yuav muab faib ua ob hom: preheating vuam thiab txias vuam.
Txhawm rau ua kom muaj txiaj ntsig zoo, nws raug nquahu kom siv cov kev ntsuas vuam hauv qab no rau kev siv thiab xaiv thaum kho cov khoom siv sib txawv thiab qhov tsis xws luag.
EZC hom grey cam khwb cia hlau vuam pas nrig
EZC hom steel tub ntxhais muaj zog graphitized coated cam khwb cia hlau vuam pas nrig, tuaj yeem siv rau AC thiab DC. Ntxiv qhov tsim nyog ntawm cov ntsiab lus graphitic rau txheej steel core cam khwb cia hlau welding rods tuaj yeem hloov cov vuam mus rau hauv grey cam khwb cia hlau thaum maj mam txias. Yog tias qhov txias txias ceev ceev, cov pob dawb yuav raug tsim thiab nws tsis yooj yim rau kev ua haujlwm. Tus nqi cua txias muaj qhov cuam tshuam loj rau lub tshuab ua haujlwm thiab vuam microstructure, vim tias cov txheej txheem kev khiav hauj lwm txawv ntawm cov tshuab txias vuam electrodes. Cov electrode no yuav tsum tau txuas txuas ntxiv thiab tom qab vuam rwb thaiv tsev kom qeeb qhov vuam. Lub microstructure, cov khoom, thiab xim ntawm grey cam khwb cia hlau vuam cov pob qij txha yog qhov zoo ib yam li cov hlau hauv paus, tab sis vim yog cov yas tsis zoo, vuam kev nyuaj siab tsis tuaj yeem so, ua rau tsis zoo thermal stress cracking kev ua tau zoo. Qhov tsis xws luag hauv qhov me me nyias-walled nrog qis qis tuaj yeem welded yam tsis muaj preheating, tab sis feem ntau yuav tsum tau preheated rau ib ncig ntawm 400 ua ntej vuam, thiab maj mam txias tom qab vuam los tiv thaiv cov kab nrib pleb thiab cov pob dawb.
EZNi hom ntshiab nickel cam khwb cia hlau vuam pas nrig
EZNi hom yog ib tug ntshiab nickel core muaj zog graphitized coated cam khwb cia hlau vuam pas nrig, uas yuav siv tau rau ob qho tib si AC thiab DC, thiab yuav siv tau rau txhua txoj hauj lwm vuam. Thaum vuam, qhov welded yuav tsis tau preheated. Nws yog ib hom vuam pas nrig nrog cov khoom zoo xws li tawg tsis kam, machinability, kev khiav hauj lwm thev naus laus zis, thiab cov khoom siv kho tshuab hauv cam khwb cia hlau txias vuam. Nws yog dav siv rau kev kho vuam ntawm nyias cam khwb cia hlau qhov chaw thiab machining nto.
EZNiFe hom ntshiab nickel cam khwb cia hlau vuam pas nrig
EZNiFe hom yog cam khwb cia hlau welding pas nrig nrog cov ntshiab nickel core thiab muaj zog graphite txheej, uas tuaj yeem siv rau AC thiab DC, thiab tuaj yeem siv rau txhua txoj haujlwm vuam. Thaum vuam, qhov welded tsis tas yuav tsum tau preheated, thiab muaj cov yam ntxwv ntawm lub zog siab, zoo plasticity, zoo heev cracking kuj, thiab zoo fusion nrog lub hauv paus khoom. Nws tuaj yeem siv los kho cov vuam ntawm qhov tseem ceeb grey cam khwb cia hlau thiab cov hlau nplaum.
EZNiCu hom npib tsib xee tooj liab cam khwb cia hlau vuam qws EZNiCu hom yog ib tug cam khwb cia hlau vuam pas nrig nrog ib tug npib tsib xee tooj liab alloy vuam core thiab muaj zog graphitic txheej. Nws tuaj yeem siv rau AC thiab DC, thiab tuaj yeem siv rau txhua txoj haujlwm vuam. Cov txheej txheem kev ua tau zoo thiab txiav kev ua tau zoo yog zoo ib yam li cov vuam rods, tab sis vim qhov siab shrinkage tus nqi thiab tsis tshua muaj zog tensile ntawm cov hlau vuam, nws tsis haum rau kho vuam ntawm castings nrog siab nruj. Nws tuaj yeem raug preheated rau ib ncig ntawm 300 ntawm chav tsev kub lossis qis kub rau vuam. Siv rau kev kho vuam ntawm grey castings uas tsis muaj zog yuav tsum tau thiab zoo plasticity yuav tsum tau.