Taw qhia
Puas yog tooj dag zoo rau casting? Qhov no yog ib lo lus nug uas tshwm sim ntawm cov neeg uas txaus siab rau hlau casting. Brass yog ib qho alloy ntawm tooj liab thiab zinc uas tau siv rau ntau pua xyoo rau ntau lub hom phiaj, nrog rau kev casting. Hauv tsab xov xwm no, peb yuav tshawb txog cov khoom ntawm tooj dag, nws qhov zoo thiab qhov tsis zoo raws li cov khoom siv casting, thiab nws daim ntawv thov hauv kev lag luam sib txawv.
Cov khoom ntawm tooj dag
Brass yog ib qho hlau uas muaj xim daj-kub zoo ib yam li cov kub. Nws yog tsim los ntawm tooj liab thiab zinc nrog tooj liab yog cov khoom tseem ceeb. Qhov feem pua ntawm zinc hauv cov alloy tuaj yeem sib txawv nyob ntawm qhov xav tau. Qhov sib ntxiv ntawm zinc nce lub hardness thiab tensile lub zog ntawm tooj dag thaum txo nws cov ductility.
Brass muaj qhov siab melting point, uas ua rau nws nyiam cov khoom siv rau casting. Nws cov ntsiab lus melting tuaj yeem nyob ntawm 900 txog 940 degrees Celsius. Qhov ceev ntawm tooj dag sib txawv ntawm 8.4 mus rau 8.73 g / cm³, nyob ntawm seb cov ntsiab lus ntawm zinc.
Brass yog corrosion-resistant thiab muaj thermal conductivity zoo, ua rau nws yog ib qho khoom siv zoo tshaj plaws rau cov khoom siv hluav taws xob, cov kav dej, thiab cov cuab yeej siv. Nws kuj yog ib qho zoo conductor ntawm hluav taws xob, ua rau nws muaj txiaj ntsig zoo hauv kev siv hluav taws xob thiab hluav taws xob.
Qhov zoo ntawm Brass rau Casting
Brass muaj ntau yam zoo li cov khoom siv casting. Ib qho ntawm qhov zoo tshaj plaws yog nws lub peev xwm los ua tau yooj yim machined thiab polished, uas ua rau nws muaj kev xaiv nrov rau cov khoom siv kho kom zoo nkauj thiab cov khoom siv ornamental.
Brass muaj fluidity zoo, uas txhais tau hais tias nws tuaj yeem sau cov pwm yooj yim, tsis muaj qhov khoob. Qhov kev ua tau zoo no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau casting intricate designs thiab qauv.
Brass kuj yog cov khoom siv ruaj khov thiab siv tau ntev uas yuav tsum tau saib xyuas me ntsis. Nws yog resistant rau hnav thiab tsim kua muag thiab muaj ib tug siab tiv thaiv corrosion, uas ua rau nws ib tug nyiam xaiv nyob rau hauv marine ib puag ncig thiab lwm yam hnyav hnyav.
Disadvantages ntawm tooj dag rau Casting
Txawm hais tias nws muaj txiaj ntsig ntau, tooj dag kuj muaj qee qhov tsis zoo ua cov khoom siv casting. Ib qho ntawm qhov tsis zoo yog tias nws tuaj yeem kim, nyob ntawm cov ntsiab lus ntawm zinc hauv cov alloy. Cov ntsiab lus zinc ntau dua ua rau nws kim dua los tsim, uas tuaj yeem ua rau tus nqi tag nrho ntawm kev tsim khoom.
Brass kuj tuaj yeem nkig, txo nws txoj kev ua kom zoo. Cov yam ntxwv no tuaj yeem ua rau nws nyuaj rau tsim cov duab zoo nkauj thiab tsim cov ntsiab lus zoo hauv cov txheej txheem casting.
Lwm qhov tsis zoo ntawm tooj dag yog tias nws tuaj yeem ua rau porosity, ua rau muaj qhov tsis xws luag hauv qhov casting. Qhov teeb meem no tuaj yeem daws tau los ntawm kev ntxiv deoxidizers rau cov hlau, tab sis nws tuaj yeem ua rau tus nqi ntau lawm.
Kev siv tooj dag Casting
Brass casting muaj ntau yam kev siv hauv kev lag luam sib txawv. Hauv kev lag luam kav dej, tooj dag yog siv los tsim cov kav dej, li qub, thiab fittings. Kev ua haujlwm siab ntawm tooj dag rau corrosion thiab nws muaj peev xwm tiv taus qhov kub thiab txias ua rau nws yog qhov kev xaiv nrov hauv cov kav dej.
Hauv kev lag luam ntaus suab paj nruag, tooj dag feem ntau yog siv los tsim cov cuab yeej xws li trumpets, trombones, thiab tubas. Cov xim ci ntsa iab thiab lub suab tsis zoo ntawm tooj dag ua rau nws yog cov khoom siv zoo tshaj plaws rau cov twj paj nruag.
Hauv kev lag luam tsheb, tooj dag yog siv rau ntau daim ntawv thov xws li kev tsim cov iav, bearings, thiab bushings. Qhov zoo tshaj plaws machinability ntawm tooj dag ua rau nws yooj yim rau kev ua hauj lwm nrog, thiab nws lub siab tsis kam hnav thiab tsim kua muag ua rau nws yog ib qho kev xaiv nrov hauv kev lag luam tsheb.
Brass casting kuj tseem siv rau hauv kev lag luam hniav nyiaj hniav kub rau kev tsim ornamental designs nyob rau hauv ntau yam duab thiab ntau thiab tsawg. Cov ntsiab lus sib txawv thiab cov qauv uas tuaj yeem ua tiav nrog tooj dag ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev tsim cov khoom tshwj xeeb ntawm cov hniav nyiaj hniav kub.
Xaus
Brass casting muaj ntau qhov zoo thiab qhov tsis zoo raws li cov khoom siv casting. Nws muaj peev xwm ua tau yooj yim machined thiab polished, nws siab tiv thaiv corrosion thiab hnav, thiab nws cov fluidity zoo heev, ua rau nws yog ib qho kev xaiv zoo tshaj plaws rau kev tsim cov qauv sib txawv thiab cov qauv tsim. Txawm li cas los xij, nws tus nqi siab, brittleness, thiab lub peev xwm rau porosity tuaj yeem yog qhov tsis zoo. Txawm li cas los xij, tooj dag casting muaj kev siv ntau yam kev lag luam, nrog rau cov kav dej, tsheb, cov hniav nyiaj hniav kub, thiab cov khoom siv suab paj nruag, thiab lwm yam. Txawm hais tias nws qhov tsis zoo, tooj dag tseem yog cov khoom siv tseem ceeb rau kev casting uas tau sawv qhov kev sim ntawm lub sijhawm.