1. Cov khoom tseem ceeb ntawm C28000 yog dab tsi?
Mechanical Strength: Siab tensile zog (380–600 MPa, nyob ntawm temper) thiab zoo yield zog (140–450 MPa), ho muaj zog dua li qis- zinc brasses (xws li, C22000) vim zinc khoom- kev daws teeb meem.
Formability: Kub ua haujlwm tau zoo (forging, extrusion, dov ntawm 600-800 degree) thiab ua haujlwm txias txias (khoov, stamping rau nyias gauges); ductile txaus rau complex -zoo li tus Cheebtsam tab sis tsawg malleable tshaj cov ntshiab tooj liab los yog tsawg-zinc brasses.
Corrosion Resistance: Zoo tiv thaiv atmospheric corrosion, dej tshiab, thiab nruab nrab ntsev; tsim ib txheej tiv thaiv patina. Txawm li cas los xij, nws yog raug raudezincificationnyob rau hauv ib puag ncig aggression (xws li, marine, acidic / alkaline media) yam tsis muaj alloying los yog kev kho deg.
Machineability: Superior machinability (rated ~ 80 ntawm cov tooj dag machinability nplai), ua kom muaj txiaj ntsig zoo tig, drilling, tapping, thiab milling - zoo tagnrho rau siab - ntim ntau lawm ntawm precision qhov chaw.
Lub cev muaj zog: Ceev (~ 8.53 g / cm³), melting point (900–940 degree), nruab nrab thermal conductivity (~ 110 W/m·K), thiab hluav taws xob conductivity tsawg (~ 20 IACS %)- qis dua tooj liab ntshiab tab sis txaus rau cov uas tsis yog - siv hluav taws xob tseem ceeb.
Aesthetic Appeal: Bright golden-daj xim nrog zoo polishability, haum rau cov hniav thiab architectural siv.
2. Qhov zoo ntawm C28000 yog dab tsi?
Lub zog zoo heev - rau - Tus nqi sib piv: Muab cov khoom siv dag zog ntau dua li qhov qis- zinc brasses (xws li, C22000) thiab cov tooj liab ntshiab ntawm tus nqi sib tw, ua rau tus nqi - kev xaiv zoo rau kev thauj khoom - cov khoom siv bearing.
Superior Machinability: Ua tau zoo tshaj plaws tooj liab alloys thiab qis- zinc brasses hauv machining efficiency, txo lub sij hawm ntau lawm, cov cuab yeej hnav, thiab cov nqi tsim khoom-tshwj xeeb tshaj yog rau cov complex lossis precision- cov khoom siv tshuab (piv txwv li, li qub, fittings, fasteners).
Exceptional Kub Ua Haujlwm: Zoo nyob rau hauv siab -kub ua (forging, extrusion), tso cai rau zus tau tej cov loj los yog tuab- cov khoom siv phab ntsa (xws li, marine hardware, structural parts) uas yuav tsum tau shaping ntawm siab kub.
Zoo Ductility & Formability: Sib npaug lub zog nrog txaus ductility rau cov txheej txheem txias txias (piv txwv li, khoov, stamping) thiab kev sib dhos ua haujlwm (xws li, riveting, brazing), nthuav dav nws daim ntawv thov.
Aesthetic Versatility: Ntuj golden- daj xim thiab polishability ua rau nws haum rau ob qho tib si haumxeeb thiab zoo nkauj daim ntaub ntawv (xws li, architectural trim, suab paj nruag, khoom siv).
Muaj dav: Tus qauv tooj dag nrog kev txhawb nqa thoob ntiaj teb, muaj nyob rau hauv ntau hom (cov ntawv, phaj, tuav, raj, forgings) thiab tempers kom tau raws li cov neeg siv khoom xav tau.
3. Dab tsi yog qhov tsis zoo ntawm C28000?
Susceptibility rau Dezincification: Cov ntsiab lus zinc siab (40%) ua rau nws yooj yim rau dezincification- cov txheej txheem corrosion qhov twg zinc yog leached los ntawm cov hlau, tawm hauv qhov ntxeem tau, nkig tooj liab - nplua nuj qauv. Qhov no txwv nws txoj kev siv nyob rau hauv marine ib puag ncig, acidic / alkaline daws, los yog siab -humidity/corrosive atmospheres tsis muaj kev tiv thaiv txheej (xws li, npib tsib xee plating) los yog dezincification-resistant (DZR) hloov.
Kev Tiv Thaiv Tsis Zoo rau Kev Nyuaj Siab Corrosion Cracking (SCC): Nyob rau hauv tensile kev nyuaj siab thiab raug aggressive media (piv txwv li, ammonia, chlorides), C28000 tej zaum yuav tsim SCC - cracking uas yuav ua rau tam sim ntawd tivthaiv tsis ua hauj lwm. Nws tsis pom zoo rau siab - cov ntawv thov kev ntxhov siab nyob rau hauv ib puag ncig corrosive.
Tsawg hluav taws xob & Thermal conductivity: Conductivity qis dua cov tooj liab ntshiab, oxygen-dawb tooj liab (piv txwv li, C11000), lossis qis-zinc tooj dag, ua rau nws tsis haum rau siab - tam sim no daim ntawv thov hluav taws xob (xws li, fais fab cables, transformer windings) los yog siab -kev ua haujlwm thermal tswj tshuab (piv txwv li, cov khoom siv hluav taws xob hloov hluav taws xob rau qhov tseem ceeb. khoom siv).
Txo qhov txias txias ua haujlwm piv rau qis-Zinc Brasses: Thaum muaj kev tsim kho me ntsis, C28000 tsis tshua muaj ductile dua li qis-zinc alloys (xws li, C22000) nyob rau hauv txias txias. Nws tuaj yeem tawg lossis deform yog tias ua haujlwm txias heev (xws li, sib sib zog nqus nqus ntawm cov ntaub ntawv tuab) yam tsis muaj qhov nruab nrab annealing.
Tsis haum rau siab -Tub kub Corrosive ib puag ncig: Tshaj li ntawm 200 degree, nws cov corrosion kuj thiab mechanical stability degrade, txwv tsis pub siv nyob rau hauv siab -kub muaj txheej txheem (xws li, tshuaj reactors, siab-tshav kub machinery) los yog daim ntawv thov nrog ntev raug rau siab kub.
Brittleness ntawm Tsawg Kub: Nyob rau hauv cryogenic los yog tsawg heev - qhov kub thiab txias ib puag ncig, C28000 yuav ua nkig, txo nws cov tawv thiab kev ntseeg siab rau cov kev siv nyob rau hauv huab cua txias los yog tsawg- cov khoom kub.
