Aluminium Alloy Machining Post-Kev Ua Haujlwm: Cov Txheej Txheem, Cov teebmeem thiab xaiv

Vim li cas Aluminium Parts Yuav Tsum Tau Tshaj Tawm -Kev Ua Haujlwm

Aluminium alloys ua ke tsis muaj qhov ntom ntom, lub zog zoo, thiab cov thermal conductivity siab, tab sis qhov liab qab oxidizes sai thiab yog mos. Ncej- kev ua haujlwm ua haujlwm pab peb lub hom phiaj: nws tshem tawm cov cim machining thiab burrs, nws tsim cov txheej tiv thaiv uas txhim kho kev hnav thiab corrosion kuj, thiab nws muab cov khoom lag luam zoo ib yam, muag muag. Cov txheej txheem txoj cai yog nyob ntawm cov alloy, qhov xav tau ntawm qhov roughness, thiab kev pabcuam ib puag ncig ntawm qhov ua tiav.

Mechanical Surface Treatments

Sandblasting

Sandblasting propels abrasive media ntawm siab tshaj tawm tawm tsam saum npoo los ntxuav nws thiab tsim kom muaj ib qho kev ntxhib los mos zoo nkauj. Cov txheej txheem tshem tawm cov oxide zaj duab xis, pwm tso cov neeg ua hauj lwm, thiab me me defects, thiab nws tsub kom qhov zoo ntawm qhov chaw, uas txhim kho cov adhesion ntawm cov txheej tom ntej. Nws kuj qhia txog txheej txheej compressive uas tuaj yeem txhim kho kev qaug zog. Yam roughness tom qab blasting nrog aluminium oxide los yog iav hlaws muaj li ntawm Ra 0.8 mus rau 3.2 micrometers nyob ntawm seb qhov loj me.

Txhuam

Txhuam ua kom zoo, sib npaug ntawm cov kab plaub hau los ntawm kev sib tsoo ntawm qhov chaw nrog cov hlua khi lossis cov ntaub qhwv. Ncaj, random, thiab kauv qauv yog ua tau. Kev txhuam txhuam yog tus qauv ntawm cov neeg siv khoom siv hluav taws xob, kev tsim vaj tsev, thiab cov khoom siv hauv tsheb vim nws zais cov ntiv tes thiab muab tus nqi zoo, kev coj ua zoo. Ib qho ntshiab anodize feem ntau yog siv tom qab txhuam kom xauv hauv qhov kev ntxhib los mos.

High-Gloss txiav

High-gloss txiav, tseem hu ua pob zeb diamond txiav, siv lub tshuab engraving los yog tig lub tshuab nrog cov cuab yeej pob zeb diamond kom tshem tawm cov txheej nyias ntawm cov hlau thiab nthuav tawm qhov ci, daim iav- zoo li nto. Nws yog feem ntau siv rau cov xov tooj ntawm tes, xov tooj cua bezels, thiab lub log rims los tsim qhov sib txawv ntawm qhov kaj ntawm ib sab ntawm matte aav. Qhov chaw txiav yuav tsum tau tiv thaiv tam sim ntawd nrog cov txheej ntshiab vim tias cov khoom siv tshiab uas tau tshwm sim los ntawm txhuas yog qhov muaj zog heev.

Polishing

Polishing txo qhov roughness ntawm lub tshuab, tshuaj, lossis electrochemical txhais tau tias. Cov tshuab polishing siv cov txheej txheem ua kom zoo dua mus rau micron- qib sib txuas; electrochemical polishing (electropolishing) smooths saum npoo los ntawm anodic dissolution thiab yog qhov zoo dua rau cov khoom uas yuav tsum tsis txhob muaj cov khoom abrasives, xws li zaub mov- tiv tauj thiab lub tshuab nqus tsev. Polished aluminium tuaj yeem ua rau daim iav zoo ib yam li stainless hlau.

Tshuaj thiab Electrochemical Kev Kho Mob

Anodizing

Anodizing hlob ib qho nyuaj aluminium oxide txheej electrochemically rau ntawm qhov chaw. Hom II (sulfuric acid) anodizing tsim cov zaj duab xis ntxeem tau 5 txog 25 micrometers tuab uas tau txais cov xim zoo nkauj, muab cov xim zoo nkauj. Hom III hardcoat anodizing tsim cov yeeb yaj kiab ntawm 25 mus rau 100 micrometers nrog hardness haum rau hnav qhov chaw xws li lub tog raj kheej pneumatic thiab cov phom phom. Anodized txheej yog ib qho tseem ceeb nrog lub substrate thiab muab qhov zoo adhesion dua li xim.

Chemical Conversion Txheej

Chromate los yog tsis yog -chromate hloov dua siab tshiab coatings tso ib tug nyias chemical zaj duab xis uas txhim kho corrosion kuj thiab npaj cov nto rau painting. Lawv tau dav siv nyob rau hauv aerospace qhov chaw uas qhov ntev ntev yuav tsum tau khaws cia, vim hais tias cov txheej ntxiv tsuas yog li 0.5 micrometer ntawm thickness.

Electropolishing thiab Etching

Alkaline lossis acid etching tshem tawm cov txheej txheem tswj ntawm cov hlau kom tshem tawm cov khawb thiab tsim kom muaj ib qho zoo nkauj satin tiav. Electropolishing sib xyaw cov tshuaj lom neeg nrog rau kev siv tam sim no rau cov txiaj ntsig zoo tshaj plaws, feem ntau ua tiav Ra ​​hauv qab 0.2 micrometer.

Txheej thiab Kho kom zoo nkauj tiav

Powder txheej muab cov txheej txheem ruaj khov, tuab polymer txheej hauv cov xim dav thiab muaj ntau rau cov khoom vaj tsev thiab cov khoom lag luam. PVD (lub cev vapor deposition) siv nyias, tawv hlau los yog ceramic films uas muab xim xws li phom, kub, thiab dub nrog zoo heev khawb. Kev pleev xim ua kua, suav nrog ob -cov khoom siv polyurethane, tseem yog tus qauv rau lub tsheb thiab cov khoom siv. Txhua txheej yuav tsum tau pretreatment kom zoo, feem ntau degreasing ntxiv rau kev hloov pauv txheej los yog anodizing, los lav adhesion.

Yuav Ua Li Cas Xaiv Txoj Cai Zoo Tshaj -Txoj Kev Ua Haujlwm

Dimensional tolerances yuav tsum tau txiav txim siab ua ntej ua tiav: anodizing ntxiv thickness, blasting tshem tawm cov khoom, thiab electropolishing tshem tawm 5 mus rau 20 micrometers ib qhov chaw. Cov khoom uas yuav tsum tuav nruj nruj yog li ntawd machined oversize los yog ua tiav ua ntej qhov kawg machining pass.

Kev soj ntsuam zoo thiab kev soj ntsuam

Txheeb xyuas cov txheej tuab nrog eddy-tam sim no ntsuas ntawm anodized lossis pleev xim rau qhov chaw, tshawb xyuas adhesion nrog ntoo khaub lig- txiav daim kab xev ntsuas raws li ISO 2409, thiab paub meej tias xim tsis sib xws rau cov qauv pom zoo raws li cov qauv teeb pom kev zoo. Kev kuaj ntsev ntsev ntawm ASTM B117 yog qhov kev lees paub zoo rau kev txhim kho corrosion- qhov ua tiav tiav. Tag nrho cov pretreatment da dej thiab yaug theem yuav tsum tau saib xyuas rau qhov concentration thiab kub, vim hais tias kev sib kis ntawm theem yog feem ntau ua rau blistering thiab tsis adhesion.

FAQ

Dab tsi yog qhov txawv ntawm anodizing thiab hmoov txheej?

Anodizing hlob ib txheej oxide los ntawm txhuas nws tus kheej, yog li nws tsis tuaj yeem tev thiab khaws cov ntsiab lus zoo; hmoov txheej tso rau txheej txheej polymer thicker uas muaj ntau yam xim xaiv thiab cuam tshuam tsis kam tab sis tuaj yeem nti ntawm cov npoo ntse.

Puas yog sandblasting puas puas aluminium qhov chaw?

Nrog rau qhov tseeb xov xwm thiab siab nws tsis; cov txheej txheem tshem tawm cov txheej txheem saum npoo uas tswj tau thiab tawm ntawm kev ntxhov siab uas tuaj yeem txhim kho lub neej qaug zog. Kev siab dhau los lossis cov xov xwm ntse tuaj yeem cuam tshuam nyias - cov phab ntsa.

Puas tuaj yeem txhuam txhuas ua anodized?

Yog lawm, txhuam hniav ua raws li qhov tseeb anodizing yog cov txheej txheem sib lawv liag rau cov hniav zoo nkauj, thiab nws yog qhov ua tiav siv rau ntau yam khoom siv hluav taws xob thiab khoom siv vaj tsev.

Vim li cas aluminium oxidize thiab anodizing tiv thaiv ntxiv oxidation li cas?

Aluminium ib txwm ua rau nyias oxide zaj duab xis; anodizing thickens uas zaj duab xis rau hauv ib qho nyuaj, ntom txheej uas thaiv cov pa oxygen diffusion thiab tuaj yeem raug kaw lossis dyed rau kev tiv thaiv ntxiv.

Dab tsi nto roughness yuav electropolishing ua tiav ntawm txhuas?

Electropolishing tuaj yeem txo qhov roughness mus rau Ra qis dua 0.2 micrometer ntawm cov alloys tsim nyog xws li 6061 thiab 6063, thiab nws ua rau lub teeb ci, tsis muaj paug -dawb nto.

Puas yog ncej- yuav tsum tau ua rau txhua qhov machined aluminium?

Tsis tas li. Cov khoom siv sab hauv feem ntau xa tuaj raws li - ua haujlwm nrog lub teeb roj zaj duab xis, tab sis ib feem ntawm cov dej noo, tswj los ntawm cov neeg siv kawg, lossis xav tau kev hnav tsis kam yuav tsum tau txais yam tsawg kawg ntawm cov txheej txheem hloov pauv lossis anodize.