553 Silicon Hlau(Tus "553" nyob rau hauv qib qhia tau cov ntsiab lus silicon ntau dua lossis sib npaug nrog 0.3%, nrog 0.3%, nrog 0.3% tsawg dua los yog sib npaug ntawm cov ntsiab lus ntawm cov ntsiab lus ntawm 0.3% Nws yog feem ntau siv los kho cov tshuaj alloy muaj pes tsawg leeg, ua kom nws cov khoom muaj txiaj ntsig zoo, thiab tau raws li cov kev xav tau ntawm ntau yam muaj xwm txheej muaj kev lag luam.
Core apprenarios: sib ntsib ob qhov kev ua haujlwm loj ntawm aluminium alloys: Casting thiab deforming
Daim ntawv thov ntawm nws yog xim hlau Silicon 553 hauv txhuas cov khoom tseem ceeb, xws li yooj yim ntawm kev sib sau, muaj zog, thiab kev coj ua, los ntawm kev ntxiv nrog rau silicon. Cov ntawv thov tseem ceeb no npog ob qhov chaw ua haujlwm tseem ceeb:
1. Muab cov khoom siv txhuas alloys: hais txog cov ntsiab lus mob ntawm kev tsim kev nyuaj thiab cov qauv kev kawm
Casting aluminium alloys yuav tsum tau cov txheej txheem xws li tuag casting thiab xuab zeb casting los tsim cov txheej txheem nyuaj thiab cov tsev nyob). Cov txheej txheem no tso rau ntau qhov kev xav tau ntawm cov neeg muaj peev xwm (nws muaj peev xwm sau cov pwm hauv lub xeev molten) thiab ua kom tsis txhob muaj qhov ua tau zoo (zam kev ua haujlwm thiab tawg). Silicon 553 yog thawj qhov chaw ntawm silicon hauv cov alloys, nrog cov ntawv thov tshwj xeeb raws li hauv qab no:
Txhim kho Molten Fluidity:
Silicon yig tau lating lub ntsiab lus melting ntawm txhuas alloys (ntshiab txhuas melts ntawm 660 degree, thaum twg aluminium alloy muaj 12% silicon tuaj yeem poob rau 577 degree). Nws tseem yuav txo cov hlau viscosity ntawm molten hlau, ua kom nws mus nrawm thiab ua rau lub tog raj kheej hloov pauv "thiab" txias kaw "los ntawm kev kaw fluidity.
Optimizing post -} nrum cov khoom siv neeg kho tshuab:
Los ntawm kev tswj cov ntsiab lus silicon ntawm Si553 (feem ntau 5% {4% nyob rau hauv CamTs alloys tsim nyob rau hauv lub txhuas matrix thaum txias. Qhov no txwv tsis pub muaj zog ntxiv nrog cov ntsiab lus silicon ntau thaum tseem ua kom muaj zog thiab ua kom muaj zog compressive, ntsib cov kabmob-cov kabmob uas yuav tsum tau cov qauv ntawm cov qauv.
Txo cov nqi ntau lawm:
Piv rau high - purity silicon hlau (xws li441thiab3303Silicon tshaj 99.5%), Hlau los txawv, thiab calcium, thiab calcium) ntawm siricking ntau yam rau cam lasting txhuas alloys thiab muaj ntau tus nqi pheej yig. Qhov no txo cov nqi roj raw thaum ua kom pom zoo, ua rau nws haum rau loj- nplai ntau ntau lawm.
2. Wrowing aluminium alloys: qhov sib npaug ntawm lub zog thiab cov yas haum rau kev ua haujlwm siab
WROOS LOUGLE ALOYS raug tsim los rau hauv cov ntawv txheeb, profiles, thiab kav dej los ntawm cov txheej txheem siab ua ib yam xws li Rolling, Extrusion, thiab Forging. Cov no yuav tsum muaj ntau dua yas (tiv taus fracture thaum ua) thiab txhim kho ntxiv dag zog (kev txhim kho txuas ntxiv los ntawm kev kho mob thaum tshav sov tom qab ua). Daim ntawv thov ntawm 553 qib silicon hlau nyob rau hauv hom ntawm alloy tsom rau nplua- tuning composition thiab syergizing cov khoom:
Kho qhov sib npaug ntawm alloy plasticity thiab lub zog:
Cov ntsiab lus silicon hauv wrought aluminium alloys feem ntau yog qis dua uas nyob rau hauv cam le caag alloys. Silicon hlau 553 meej pab cov silicon, ua kom muaj peev xwm ntxiv dag zog (xws li mg₂si) nrog cov ntsiab lus xws li magnesium thiab tooj liab. Tsawg dhau ntawm cov lus silicon tsawg dhau hauv cov theem tsis muaj zog ntxiv dag zog thiab muaj zog tsawg; Siab heev li cov ntsiab lus silicon txo qhov alloy cov plasticity thiab ua rau nws nquag tawg thaum lub sij hawm dov / extrusion. Los ntawm cov meej meej ntxiv ntawm silicon Industrial 553, qhov sib npaug ntawm kev yooj yim ntawm kev ua thiab siab zog ua tiav.
Txhim kho Corrosion Kuj thiab Weldability:
Hauv wrought aluminium alloys rau cov ntawv thov cov txheej txheem, tus tswj hwm qis dua cov ntsiab lus hauv kev txhim kho (xws li 0.2%) Tsis tas li ntawd, cov ntsiab lus silicon tsawg txo tau kev phom sij rau qhov kub tawm thaum vuam, kom muaj kev ruaj ntseg ntawm welded lub tsev thav duab.
Cov Ntawv Thov Zoo: Vim li cas xaiv Silicon Hlau 553 Tshaj Lwm Qib Ntxiv?
Hauv txhuas alloy ntau lawm, yog xim hlau Silicon qib (xws li 553, 441, thiab 3303) sib xws rau cov kev sib txawv. Tus thawj coj ua rau xaiv 553 yog nws tus nqi siab tshaj - kev sib piv thiab kev ua tau zoo:
Piv rau siab - purity silicon (xws li tsis muaj zog tshaj li lossis sib npaug los yog sib npaug lossis sib npaug lossis sib npaug me ntsis. Txawm li cas los xij, nyob rau hauv feem ntau aluminium alloys (tshwj xeeb tshaj yog cov neeg pej xeem casting / wrought aluminium), nws impurities (xws li hlau thiab calcium) tsis cuam tshuam tsis zoo. Tsis tas li ntawd, nws tus nqi yog 10% {{{{11% qis dua 441, ua rau nws haum rau kev tsim khoom loj.
Piv rau tsawg - purity silicon (nrog aSilicon cov ntsiab lus ntau dua lossis sib npaug rau 97%Thiab siab dua impurities), 553 muaj cov ntsiab lus silicon ntau dua thiab qis dua. Qhov no zam cov nce alloy brittleness thiab casting qhov kev tsis ncaj ncees cuam tshuam nrog cov kev ua kom haum rau cov txheej txheem kev ua yeeb yam nrog cov kev xav tau ua tau zoo.
