Xaiv lub log zoo feem ntau nthuav tawm qhov teeb meem rau cov tswv tsheb, tshwj xeeb tshaj yog thaum txiav txim siab ntawm ob txoj kev tsim khoom tseem ceeb: forging thiab casting. Raws li cov khoom tseem ceeb txuas lub tsheb mus rau txoj kev, lub log tsis yog tsuas yog kev zoo nkauj xwb tab sis kuj tseem tsav tsheb kev nyab xeeb thiab kev ua haujlwm. Kev nkag siab txog qhov sib txawv ntawm cov forged thiab cam khwb cia lub log pab tswv yim txiav txim siab thiab zam cov nuj nqis uas tsis tsim nyog thaum kho lawv lub tsheb.
Kev sib piv ntawm cov txheej txheem tsim khoom tseem ceeb
Casting muaj cua sov aluminium alloy mus rau lub xeev ua kua thiab txhaj rau hauv pwm ntawm lub ntiajteb txawj nqus lossis tsis tshua muaj siab; cov hlau ces txias thiab solidifies tsim lub log. Nyob ntawm cov txheej txheem tshwj xeeb, cov txheej txheem no tau muab faib ua lub ntiajteb txawj nqus casting, qis-siab casting, thiab ntws sib sau (los yog spin casting). Lub ntiajteb txawj nqus casting yog txoj kev yooj yim tshaj plaws, tso siab rau cov hlau molten nws tus kheej qhov hnyav los sau cov pwm; thaum nws muab tus nqi qis tshaj plaws, nws yog qhov ua rau huab cua npuas thiab porosity. Tsawg-pressure casting siv qis- cov pa roj kom yuam cov hlau molten rau hauv pwm, ua rau cov khoom lag luam denser. Flow forming ntxiv cov kauj ruam rotary stamping rau cov txheej txheem casting, tso cai rau lub log kom nyias thiab sib dua. Nyob rau hauv sib piv, forging yuav muab ib tug khoom, siab - kub aluminium alloy billet rau hauv pwm thiab shaping nws siv ib tug xovxwm exerting txhiab tons ntawm quab yuam; Nyob rau hauv lub siab siab no, cov hlau molecular qauv rearranges mus rau hauv ib tug nruj dua, compact configuration. Cov txheej txheem no zoo tshem tawm cov voids thiab porosity, ua kom cov khoom ntom ntom.
Qhov sib txawv ntawm Kev Ua Haujlwm
Hais txog lub zog, cov qauv molecular ntawm forged log ua nruj nreem kaw hauv cov qauv fibrous tom qab forging, muab qhov zoo tshaj qhov torsional tsis kam thiab qaug zog lub neej piv rau cam khwb cia log, thiab ua rau lawv muaj kev cuam tshuam ntau dua thiab siab. Cov ntaub ntawv qhia tau hais tias rau lub log ntawm tib qhov loj thiab lub zog ntsuas, cov log forged yog kwv yees li 20% sib zog dua cov log cam. Cov yam ntxwv ntawm lub teeb yuag no ua rau muaj ntau yam zoo: ua ntej, txhim kho roj kev lag luam- txo qhov hnyav ntawm 10 kg yog sib npaug los txo lub cev hnyav ntawm 100 kg; thib ob, txhim khu kev tuav cov lus teb- lub log sib zog txo qis inertia, ua kom lub zog nrawm dua; thiab thib peb, txo cov load ntawm lub ncua kev kawm ntawv, ncua lub neej ntawm shock absorbers. Txawm hais tias cov log cam khwb cia muaj zog me ntsis, kev txhim kho cov txheej txheem niaj hnub no- tshwj xeeb qis- siab casting thiab ntws sib sau- tau ua kom cov khoom no ua tau raws li cov kev xav tau niaj hnub ntawm cov neeg caij tsheb.
