Aluminium profile extrusion txoj cai, kev faib tawm thiab daim ntawv thov
1. Lub hauv paus ntsiab lus ntawm aluminium extrusion
Aluminium profile extrusion yog ib txoj kev ua yas uas siv rau sab nraud rau cov hlau billet tso rau hauv lub thawv (extrusion cylinder) kom nws ntws tawm ntawm ib qho kev tuag qhov tshwj xeeb kom tau txais cov khoom seem thiab qhov loj me.
2. Kev sib xyaw ntawm aluminium profile extrusion tshuab
Aluminium profile extrusion tshuab yog tsim los ntawm lub hauv paus tshuab, pem hauv ntej kem ncej, expansion quab yuam kem, extrusion lub tog raj kheej, hydraulic system nyob rau hauv hluav taws xob tswj, thiab yog nruab nrog pwm puag, thimble, nplai phaj, swb phaj, thiab lwm yam.
3. Kev faib tawm ntawm txhuas profile extrusion txoj kev
Raws li hom hlau nyob rau hauv aluminium profile extrusion lub tog raj kheej, lub xeev ntawm kev ntxhov siab thiab strain, extrusion kev taw qhia ntawm aluminium profile, lub xeev lubrication, extrusion kub, extrusion ceev, hom lossis qauv ntawm cov tuag, cov duab los yog tus naj npawb ntawm qhov khoob, thiab cov duab ntawm cov khoom Los yog cov lej sib txawv, thiab lwm yam, tuaj yeem muab faib ua rau pem hauv ntej extrusion txoj kev, rov qab extrusion txoj kev, (xws li lub dav hlau deformation extrusion, axisymmetric deformation extrusion, dav peb-dimensional deformation extrusion) lateral extrusion txoj kev, iav lubricated extrusion txoj kev, hydrostatic extrusion txoj kev, nruam extrusion txoj kev thiab hais txog.
4. Forward thermal deformation extrusion
Feem ntau ntawm tshav kub-deformed aluminium ntau lawm tuam txhab siv rau pem hauv ntej tshav kub-deformed extrusion txoj kev kom tau txais txhuas cov ntaub ntawv uas yuav tsum tau cross-sectional zoo los ntawm tej yam pwm (pav tuag, cone tuag, split tuag). Tib txoj kev tsim khoom txhuas tau txais yuav!
Cov txheej txheem rau pem hauv ntej extrusion yog yooj yim, cov khoom yuav tsum tau tsis siab, lub peev xwm hlau deformation yog siab, ntau lawm ntau, kev ua tau zoo ntawm txhuas cov ntaub ntawv yog heev tswj, ntau lawm saj zawg zog yog loj, thiab cov cuab yeej thiab pwm yog yooj yim. tswj thiab kho.
Qhov tsis zoo yog qhov kev sib txhuam ntawm sab hauv ntawm lub tog raj kheej extrusion thiab cov khoom siv txhuas muaj zog, uas suav nrog ntau feem ntawm kev siv zog extrusion. Kev sib txhuam yooj yim ua rau lub ingot nyob rau hauv lub tog raj kheej kom sov thiab ua rau kom tsis muaj zog ntawm qhov profile, uas cuam tshuam kev txhim kho ntawm cov khoom tiav thiab txwv cov txhuas thiab txhuas alloys. Lub extrusion ceev ntawm cov alloy accelerates hnav thiab kev pab cuam lub neej ntawm lub extrusion tuag, thiab lub microstructure thiab kev ua tau zoo ntawm cov khoom yog unevenly.
5. Hom, khoom siv thiab kev siv cov cua sov-deformed aluminium alloys
Cov hom kub-deformed aluminium alloys tau muab faib ua 8 pawg raws li lawv cov kev ua tau zoo thiab kev siv, thiab lawv cov kev ua tau zoo thiab kev siv sib txawv.
1). Pure aluminium (L series) sib raug rau qib thoob ntiaj teb 1000 series ntshiab txhuas,
Muaj cov ntshiab aluminium, zoo heev nyob rau hauv machinability, corrosion kuj, kev kho deg thiab hluav taws xob conductivity, tab sis tsis tshua muaj zog, siv nyob rau hauv tsev cov khoom, hluav taws xob khoom, tshuaj thiab zaub mov ntim, hluav taws xob kis tau tus mob thiab cov ntaub ntawv faib, thiab lwm yam.
2). Hard aluminium (Ly) sib raug rau lub thoob ntiaj teb hom 2000 AL-Cu (aluminium-tooj liab) alloy.
Siv rau cov khoom loj, cov hlua khi, cov ntsiab lus Cu siab, tsis zoo corrosion kuj.
3). Anti-xeb txhuas (LF) sib raug rau lub thoob ntiaj teb hom 3000 AL-Mn (aluminium-manganese) alloy.
Nws tsis tuaj yeem ua kom muaj zog los ntawm kev kho cua sov, nws cov machinability thiab corrosion kuj yog piv rau cov ntshiab txhuas, nws lub zog tau raug txhim kho, thiab nws cov vuam kev ua tau zoo. Nws yog dav siv hauv cov khoom siv niaj hnub, khoom siv hauv tsev, khoom siv, thiab lwm yam.
4). Tshwj xeeb txhuas (LT) sib raug rau lub thoob ntiaj teb hom 4000 AL-Si (aluminium-silicon) alloy.
Feem ntau cov khoom siv vuam, qhov chaw melting tsawg (575-630 degrees), zoo fluidity thiab fluidity.
5). Anti-xeb txhuas (LF) sib raug rau lub thoob ntiaj teb hom 5000AL-Mg (aluminium-magnesium) alloy.
Nws tsis tuaj yeem ntxiv dag zog los ntawm kev kho cua sov, thiab muaj kev tiv thaiv corrosion zoo heev, weldability, thiab nto gloss. Los ntawm kev tswj cov ntsiab lus ntawm Mg, alloys ntawm ntau qib sib txawv tuaj yeem tau txais. Ob peb siv rau cov khoom siv kho kom zoo nkauj thiab cov khoom siv siab heev. Siv hauv nkoj, tsheb, khoom siv hauv tsev. High welded Cheebtsam rau nkoj, tsheb thiab tshuaj nroj tsuag.
6). 6000AL-Mg-Si alloy
Mg2Si nag lossis daus hardening kev kho cua sov tuaj yeem ntxiv dag zog rau cov hlau, nrog kev tiv thaiv corrosion zoo, nruab nrab lub zog thiab kub ua haujlwm zoo, yog li nws yog dav siv los ua cov khoom siv extrusion, nrog cov formability zoo thiab siab hardness tau los ntawm quenching. Nws yog dav siv nyob rau hauv lub tsev profiles, thiab nws kuj yog qhov tseem ceeb tshaj plaws ntawm cov ntaub ntawv nyob rau hauv kev lag luam.
7). Super duralumin (LC) sib raug rau lub thoob ntiaj teb hom 7000AL-Zn-Mg-Cu (aluminium-zinc-magnesium-tooj liab) high-strength aluminium alloy thiab AL-Zn-Mg alloy rau vuam Cheebtsam.
Lub zog muaj zog, zoo heev welding thiab quenching kev ua tau zoo, tab sis qhov tsis zoo yog qhov tsis zoo rau kev ntxhov siab corrosion cracking tsis zoo, uas yuav tsum tau txhim kho los ntawm kev kho cua sov kom tsim nyog. Lub qub yog tsuas yog siv nyob rau hauv dav hlau thiab cov khoom ua si nawv, thiab lub tom kawg yog tsuas yog siv nyob rau hauv vuam yam ntxwv cov ntaub ntawv rau railway tsheb.
8): 8000 (AL-LI) aluminium-lithium alloy
Qhov loj tshaj plaws yog qhov ceev yog 8% ~ 9 feem pua qis dua li ntawm 7000 series, siab rigidity, siab zog, thiab lub teeb yuag. Cov koob no yog nyob rau hauv txoj kev loj hlob (lub peev xwm los tiv thaiv kev lwj ntawm aluminium alloy hlau nyob rau hauv complex tej yam kev mob tseem tsis tau overcome tag nrho), thiab nws yog tsuas yog siv nyob rau hauv aircraft thiab missiles. , cav thiab lwm yam kev siv tub rog.