Yuav ua li cas cov tub lim hlau cuam tshuam rau weld lub zog?

Cov tub lim hlau tsis yog ib qho "muab tub lim" hauv kev txiav txim siab lub zog, durability, thiab muaj kev ntseeg tau, thiab muaj kev ntseeg tau ntawm Weld. Nws muaj pes tsawg leeg, sib xyaw nrog cov hlau ua haujlwm, thiab muaj peev xwm zam tsis tau ncaj qha rau kev ntxhov siab, nkees, thiab tsis ua haujlwm. Nkag siab cov teebmeem no yog qhov tseem ceeb los xaiv cov tub sab xis kom muaj zog, ntev- kav pob qij.
1. Kev sib raug zoo nrog cov hauv paus hlau: lub hauv paus ntawm lub zog
Qhov feem ntau ua rau cov neeg muab tub rog cuam tshuam rau cov hlau cuam tshuam weld lub zog yog los ntawm nws cov kev sib raug zoo nrog lub hauv paus hlau. Ib tug muab tub lim tias "ntais ntawv" lub hauv paus kev sib xyaw ua ke (lossis yog tsim tshwj xeeb rau nws) tsim cov sib txuas sib txuas nrog nws) tsim cov ntawv sib txuas sib txuas nrog cov nyiaj txiag uas tau faib cov kev ntxhov siab tusyees. Mismatched fillers, los ntawm kev sib piv, tsim cov ntsiab lus tsis muaj zog.
• Sib piv cov alloys: thaum muab tub lim hlau sib txuas cov ntsiab lus tseem ceeb nrog lub hauv paus weld, piv txwv li, kev cog lus rau tib tus nqi thaum ua kom sov lossis txias). Piv txwv li:
◦ Vuam 6061 TXHUAM (ib qho silicon (ib qho silicon- Magnesium alloy) tsim lub hauv paus welm) ua ke nrog lub hauv paus hlau, tsis txhob muaj kev cuam tshuam rau lub hauv paus.
◦ Vuam A36 hlau nrog E7018 muab tub lim (txuam nrog cov pa roj carbon thiab qib manganese) ua kom cov weld muaj lub zog sib piv rau lub hauv paus ntawm cov hlau (~ 70,000 psi).
• Mismatched alloys: Siv cov tub lim nias tsis sib xws nrog lub hauv paus hlau ua rau tsis muaj zog, Nyuaj Welds. Piv txwv li:
◦ ™ aluminium (magnesium- raws li ERCEX43 (silicon}
◦ Vuam Stainless hlau nrog cov thawv ntim cov roj carbon steel ua rau corrosion thiab tsis muaj zog ntawm kev sib koom ua ke, raws li cov tub lim tawm tsis muaj kev ua haujlwm muaj xeb.
2. ALLOY ntsiab IN CATER HLAU: Txhim Kho Cov Khoom Siv Neeg Kho Mob
Muab cov khoom siv hlau ua ke (piv txwv li, cov kab mob siab, npib tsib xee, chromium) tshwj xeeb lossis txo tus weld lub zog los ntawm kev kho weld lub micros microstructure:
• Lub Zog - bogelting ntsiab:
◦ Magnesium (MG): Hauv Aluminium Fobers (piv txwv li, ER5356), magnesium nce ntxiv {} qhov tseem ceeb rau cov tubrog nkoj lossis cov txheej txheem.
◦ carbon (c) thiab manganese (mn): hauv cov txheej txheem hlau (piv txwv li, E708), cov khoom siv vensility, ua welds tsim.
◦ npib tsib (NI): Hauv cov thawv hlau stainless (piv txwv li, obsel txhim kho ductility thiab lub zog ntawm kev kub siab, zoo tagnrho rau muaj kev siv hluav taws xob.
• Cov ntsiab lus uas tiv thaiv tsis xws li (tsis ncaj qha txhawb zog zog):
◦ Silicon (Si): hauv txhuas sau (ER4043) thiab ua kom muaj cov pa hluav taws xob zoo li cov kab mob weldosity) thiab ua kom muaj kev ntxhov siab uas tsis muaj zog ntawm Weld.
Awv deoxidizers (piv txwv li, titanium): nyob rau hauv steel fillers, tiv thaiv oxide suav (nyuaj, nkig plev me me uas tawg nyob rau hauv kev ntxhov siab).
3. Cov tub yees tsav hlau thiab weld tsis xws luag: tsis txhob muaj cov ntsiab lus tsis muaj zog
Txawm tias ib tug zoo - matched filler tuaj yeem txo qis weld lub zog yog tias nws muaj teeb meem rau qhov tsis xws luag. Cov tub rog tsis ncaj ncees lawm (lossis siv tsis raug) tuaj yeem ua rau:
• Porosity: Fitters nrog cov ntsiab lus noo noo (piv txwv li, tsis muaj kev tiv thaiv cov hluav taws xob hluav taws xob) lossis cov pa roj av cuab ntxiab roj npuas hauv Weld. Cov npuas npuas no ua raws li "qhov" uas txo tus ntoo khaub lig weld- ntu ntawm thaj chaw, ua rau nws tsis tawg paj.
• Cov chaw kub kub: Foob nrog cov khoom tsis zoo (piv txwv li, siv qhov qis- tooj liab aluminium) ua rau tawg ua cov dej txias. Cov kab nrib pleb no hais tawm nyob rau hauv kev ntxhov siab, ua rau kev ua tsis tau sai.
• Ua tiav Fusion Files: fillers nrog cov roj qis (piv txwv li cov pas hlau tuab tuab
4. Muab tub lim hlau loj thiab tso nyiaj: ua kom pom kev txaus
Qhov loj thiab ntau ntawm cov muab tub lim hlau tso nyiaj (Weld Bead Loj) ncaj qha cuam tshuam lub zog, tshwj xeeb tshaj yog rau cov khoom tuab:
• Hauv {- felds puv welds: heev mett folding tawm ntawm cov pob txha sib koom ua ke, nrog cov khoom tsis txaus los faib kev ntxhov siab. Piv txwv li, vuam ib ½ Ã {- nti steel phaj nrog cov taum pauv nyias ua rau tsim lub zog weld uas yuav tawg tau thaum lub siab.
• Cov ntawv muaj cov tsiaj ntawv welds: ib tug muab tub lim nrog qhov loj me (txuam nrog kev sib koom tes uas tsis muaj zog tshaj nws lub zog. Rau cov qauv hlau, siv hluav taws xob feem ntau txhawb nqa kom muaj 10-20% thicker dua li cov hlau hauv paus.
5. Post {{- weld cov khoom: nkees thiab tawv
Weld lub zog tsis yog tsuas yog hais txog "RHOUR POINT" {- Nws tseem hais txog kev tawm tsam kev ntxhov siab dua (nkees) thiab cuam tshuam). Tus tub lim hlau ua lub luag haujlwm ntawm no ib yam nkaus:
• Ua kom qaug zog tsis kam: sau nrog kev ua kom siab (piv txwv li, ER5356 Txhuas, 304 stainless hlau) nqus rov qab kev ntxhov siab tsis muaj kev tawg. Qhov no yog qhov tseem ceeb rau qhov chaw xws li kev ncua tsheb qeeb dua lossis cov tshuab raj.
• Toardness (cuam tshuam tsis kam): Sau nrog cov ntsiab lus carbon qis (piv txwv li, e7018 {{3} {{ Qhov no yog qhov tseem ceeb rau cov qauv sab nraum zoov thaum huab cua txias hauv cov huab cua txias, qhov twg nkawv cov ntaub ntawv tuaj yeem tawg ntawm kev cuam tshuam.
Tag
Cov muab tub rog sib xyaw ua ke cuam tshuam nrog kev sib xyaw weld los ntawm kev sib xyaw nrog cov hlau, Alloy muaj kev tiv thaiv, kev tiv thaiv tsis taus, thiab kev tiv thaiv tsis taus, thiab tso nyiaj. Ib qho zoo {-}}}}} muaj cov khoom siv tsis xws luag, nrog cov tsis muaj zog, thiab tsis txaus siab, qaug zog. Conversely, lub mismatched lossis qis - zoo lim tau tuaj yeem ua kom paub cov tsis muaj zog, txawm tias cov txheej txheem vuam yog flawless. Rau lub zog kom ntseeg tau, xaiv cov tub sab xis yog qhov tseem ceeb raws li mastering cov txheej txheem vuam hlau nws tus kheej.