Vuam aluminium xav tau cov ntaub ntawv tshwj xeeb uas haum rau nws cov khoom tshwj xeeb xws li thermal conductivity thiab susceptibility rau oxidation. Ntawm no yog ib qho kev tawg ntawm cov ntaub ntawv tseem ceeb uas siv rau vuam aluminium:
1. Filler Hlau
Xaiv txoj cai muab tub lim hlau yog qhov tseem ceeb rau kev sib raug zoo nrog lub hauv paus aluminium alloy, xyuas kom lub suab welds tsis tawg lossis tsis muaj zog. Common aluminium filler hlau muaj xws li:
- 4043 Alloy (Al-Yog): Dav siv vim nws cov yam ntxwv zoo heev ntws thiab zoo tawg kuj. Nws yog qhov zoo tshaj plaws rau vuam 6xxx series aluminium alloys tab sis tsis pom zoo qhov twg tom qab anodizing yuav tsum tau vim muaj peev xwm rau thaj tsam weld tsaus..
- 5356 Alloy (Al-Mg): Muab lub zog tensile ntau dua thiab zoo dua toughness dua 4043. Nws yog resistant rau corrosion thiab haum rau vuam 5xxx series alloys. Nws kuj phim cov xim ntawm lub hauv paus hlau zoo dua tom qab anodizing.
- 5183, 5556 (Al-Mg): Siv rau siab zog welds piv rau 5356. Lawv muab kev tiv thaiv zoo rau corrosion hauv marine ib puag ncig.
- 5554, 5654 (Al-Mg): Variants nrog cov khoom tshwj xeeb rau ib puag ncig uas muaj kev ntxhov siab-corrosion.
- 4047 Alloy (Al-Yog): Muaj ntau silicon, txo melting point thiab nce fluidity ntawm lub pas dej ua ke, feem ntau siv rau cov ntawv thov kom zoo txaus rau hauv kev sib koom ua ke.
2. Tiv thaiv Gases
Kev xaiv kom zoo ntawm cov khoom siv tiv thaiv yog qhov tseem ceeb los tiv thaiv thaj tsam weld los ntawm atmospheric paug thiab kom ruaj khov arc. Cov pa roj muaj xws li:
- Argon: Feem ntau siv shielding gas rau aluminium vuam vim nws pab tsim cov arc ruaj khov thiab txo cov kev ua haujlwm tu, uas yog ntshaw thaum welding aluminium.
- Helium los yog Helium-Argon Mixtures: Cov no yog siv los ua kom nkag mus thiab weld pas dej fluidity, tshwj xeeb tshaj yog muaj txiaj ntsig hauv cov ntu tuab. Helium pab tsim qhov kub dua arc, uas tuaj yeem ua tau zoo vim yog aluminium qhov kub siab conductivity.
3. Vuam txheej txheem cov ntaub ntawv tshwj xeeb
Nyob ntawm cov txheej txheem vuam, lwm yam ntaub ntawv kuj yuav tsim nyog:
- TIG Welding:
- Cov hluav taws xob: Feem ntau, ntshiab tungsten los yog zirconiaated tungsten electrodes yog siv rau AC TIG vuam ntawm txhuas.
- AC Vuam Tshuab: Hloov tam sim no yog qhov tseem ceeb vim nws pab ua kom tawg oxide txheej uas tsim rau ntawm txhuas qhov chaw.
- MIG Vuam:
- Vuam Hlau: Cov hlau xws li ER4043 lossis ER5356 feem ntau yog siv rau ntawm cov hlua thiab pub los ntawm rab phom vuam.
- Spool Phom lossis Push-Pull Phom: Cov no yog qhov tseem ceeb heev los tiv thaiv cov teeb meem kev noj zaub mov vim qhov muag ntawm cov hlau txhuas.
4. Cov ntaub ntawv npaj nto
Aluminium qhov chaw yuav tsum tau muab ntxuav kom huv si ua ntej welding kom tshem tawm cov oxide txheej thiab tej yam kab mob:
- Txhuam (Stainless hlau): Siv los txhuam qhov chaw. Nws yog ib qho tseem ceeb uas yuav tau siv cov txhuam hniav uas tsuas yog siv rau ntawm txhuas kom tsis txhob muaj kab mob.
- Cov tshuaj ntxuav tes: Alkaline los yog acid-raws li kev daws teeb meem tuaj yeem siv los tshem tawm cov oxides hnyav thiab roj tab sis yuav tsum tau muab yaug kom huv si kom tsis txhob muaj cov kab mob sib kis mus rau hauv qhov vuam..
5. Khoom siv kev nyab xeeb
Muab lub ci ci ntawm lub arc thiab qhov zoo ntawm aluminium welding fumes, Cov iav kev nyab xeeb tsim nyog yog qhov tseem ceeb:
- Tsis Siv Neeg Tsaus Welding Helmet: Tiv thaiv ob lub qhov muag los ntawm lub teeb UV khaus.
- Cov tshuab ua pa: Tshwj xeeb tshaj yog thaum vuam nyob rau hauv qhov chaw kaw, tiv thaiv kev nqus pa phem.
- Cov khaub ncaws tiv thaiv: Tiv thaiv los ntawm sparks thiab UV raug.
Using these specific materials correctly can greatly improve the quality of aluminium welds and ensure the structural integrity and longevity of the welded joints.
