Muaj kev tsim thoob ntiaj teb ntev rau kev txheeb xyuas cov txhuas alloys (saib cov lus hauv qab no). Thawj tus lej nyob rau hauv plaub-tus lej alloy code txheeb xyuas cov ntsiab lus tseem ceeb ntawm alloying.
Cov txheej txheem European siv tib cov lej.
Cov lus hauv qab no muab cov qauv dav dav ntawm cov tshuab.
|
Alloying khoom |
Alloy code |
Alloy hom |
|
Tsis muaj (ntshiab aluminium) |
1000 series |
Tsis hardenable |
|
Tooj |
2000 series |
Hardenable |
|
Manganese |
3000 series |
Tsis hardenable |
|
Silicon |
4000 series |
Tsis hardenable |
|
Magnesium |
5000 series |
Tsis hardenable |
|
Magnesium + silicon |
6000 series |
Hardenable |
|
Zinc |
7000 series |
Hardenable |
|
Lwm yam |
8000 series |
Lub 6000 series yog nyob deb ntawm cov khoom siv dav tshaj plaws hauv aluminium extrusion.
Raws li kev ua haujlwm txias yog tib txoj hauv kev los ua kom lub zog ntawm cov alloys tsis tuaj yeem hardened, feem ntau ntawm cov no mus rau dov. Nyob rau hauv extrusion, ntawm qhov tod tes, hardenable alloys yog feem ntau siv.
Lub 6000 series, uas muaj silicon thiab magnesium raws li cov ntsiab lus alloying, yog nyob deb ntawm kev siv ntau tshaj plaws hauv extrusion. Hauv 7021 alloy, zinc thiab magnesium yog lub luag haujlwm rau cov nyhuv hardening. Qee cov alloys siv manganese, zirconium lossis chrome los ua kom tawv nqaij.
Hlau, uas muaj nyob rau hauv tag nrho cov lag luam txhuas, tuaj yeem ua rau muaj qhov tsis zoo rau qhov tawv thiab ua tiav (nrog rau lwm yam) yog tias muaj ntau ntau.
Ob txoj kev hardening yog siv rau cov alloys hauv txheej txheem extrusion. 'Kev daws teeb meem' kev kho cua sov yog nqa tawm thaum lub sij hawm extrusion los ntawm kev ua tib zoo tswj qhov kub thiab txias ntawm qhov tshwm sim profile. 'Precipitation' hardening (kev laus), uas yuav siv sij hawm ob peb teev, tshwm sim nyob rau hauv tshwj xeeb furnaces tom qab lub extrusion txheej txheem.
Ntawm cov yam cuam tshuam rau kev xaiv ntawm txoj cai alloy rau cov khoom extruded yog:
- Lub zog, tiav, tsim nyog rau cov hniav anodizing, corrosion kuj, haum rau machining thiab sib sau, weldability thiab ntau lawm nqi.
