Vuam yog txheej txheem tseem ceeb rau high-temperature alloy forgings, vim qhov zoo ntawm welds ncaj qha cuam tshuam rau kev ua haujlwm ruaj khov thiab kev pabcuam lub neej ntawm tag nrho cov khoom siv. Tsab ntawv xov xwm no tshawb txog cov txheej txheem vuam zoo rau kev kub siab alloy forgings, hais txog cov teeb meem tseem ceeb thiab muab cov kev daws teeb meem rau kev ua tiav cov vuam zoo.
Kev sib tw hauv Welding High-Temperature Alloy Forgings
Welding high-temperature alloy forgings nthuav tawm ntau qhov kev sib tw tseem ceeb:
High Melting Point thiab Thermal conductivity
High-temperature alloys muaj cov ntsiab lus siab melting thiab thermal conductivity, yuav tsum tau vuam txheej txheem uas muaj peev xwm muab ntau zog ceev thiab ntev preheating lub sij hawm. Kev kov yeej cov kev cov nyom no yog qhov tseem ceeb los xyuas kom muaj kev sib xyaw kom raug thiab tsis txhob muaj qhov tsis xws luag.
Susceptibility rau Cracking
Lub siab thermal stability ntawm cov alloys no ua rau lawv yooj yim rau cua sov tawg thiab rov ua kom tawg tawg thaum vuam. Qhov no yuav tsum muaj kev tswj hwm nruj ntawm cov txheej txheem vuam thiab cov kev txwv kom txo qis kev pheej hmoo ntawm kev tawg thiab xyuas kom muaj kev ncaj ncees.
Sensitivity rau impurities
High-temperature alloys yog rhiab heev rau impurities, yuav tsum nruj tswj nyob rau hauv cov huab cua thiab lub purity ntawm lub vuam pas dej ua ke thaum vuam. Cov impurities tuaj yeem ua rau txo cov khoom siv dag zog thiab kev tiv thaiv corrosion, cuam tshuam tag nrho kev ua haujlwm ntawm cov khoom siv welded.
Welding Techniques rau High-Tsub Alloy Forgings
Tungsten Inert Gas (TIG) thiab Hlau Inert Gas (MIG) Vuam
TIG thiab MIG welding siv cov roj inert, xws li argon, tiv thaiv cov pa roj los ua kom muaj kev tiv thaiv ib puag ncig ntawm thaj chaw vuam, tiv thaiv kev sib kis ntawm huab cua ib puag ncig. Cov txheej txheem no yog tsim rau vuam high-temperature alloy forgings ntawm ntau yam thicknesses, muab ruaj khov weld zoo. Txawm li cas los xij, lawv zoo li muaj kev sib txuas qeeb qeeb.
![The process of welding by means of tungsten inert gas (TIG) method [14] | Download Scientific Diagram](https://www.researchgate.net/publication/311991053/figure/fig2/AS:445342505279489@1483189335431/The-process-of-welding-by-means-of-tungsten-inert-gas-TIG-method-14.png "info-1-1")
Electron Beam Vuam (EBW)
EBW yog lub zog loj ua hluav taws xob welding txheej txheem uas siv hluav taws xob ci mus rau bombard qhov saum npoo ntawm workpiece, tsim kom muaj cua sov kom yaj thiab koom nrog cov ntaub ntawv. EBW muaj cov vuam ceev ceev, cov cheeb tsam me me thaum tshav kub kub cuam tshuam, thiab tshwj xeeb tshaj yog zoo-tsim rau vuam nyias high-temperature alloy forgings. Txawm li cas los xij, nws xav tau cov cuab yeej siv tseem ceeb thiab xav tau cov neeg ua haujlwm txawj.
Laser vuam (LW)
Laser vuam siv lub teeb tsom teeb laser ua lub tshav kub kom yaj thiab koom nrog cov khoom ua haujlwm. LW muaj cov vuam ceev ceev, nqaim weld seams, thiab tsawg kawg ntawm tshav kub-tshem tawm tsam, ua rau nws zoo tagnrho rau high-precision thiab high-zoo vuam ntawm high-temperature alloy forgings. Txawm li cas los xij, cov khoom siv laser vuam tuaj yeem kim, thiab nws xav tau cov neeg ua haujlwm nrog kev txawj ntse.
Kev sib txhuam vuam (FW)
Kev sib txhuam vuam yog ib txoj kev sib koom ua ke uas siv cov cua sov tsim los ntawm kev sib txhuam ntawm cov khoom ua haujlwm kom ua tiav cov yas deformation thiab kev sib txuas. Cov txheej txheem no muaj lub sijhawm luv luv thiab tsis tas yuav tsum tau muab cov ntaub ntawv sau, ua rau nws tsim nyog rau kev sib koom ua ke ntawm high-temperature alloy forgings. Txawm li cas los xij, kev sib txhuam welding imposes tej yam yuav tsum tau ntawm workpiece qhov ntev thiab cov duab, thiab cov vuam zoo tuaj yeem cuam tshuam los ntawm kev sib txhuam.
Kev vuam ntawm high-temperature alloy forgings nthuav tawm cov kev sib tw tshwj xeeb vim lawv cov ntsiab lus melting siab, thermal conductivity, susceptibility to cracking, thiab rhiab heev rau impurities. Ntau yam kev siv vuam, xws li TIG / MIG vuam, electron beam vuam, laser vuam, thiab kev sib txhuam vuam, muab cov kev daws teeb meem los daws cov teeb meem no. Kev xaiv cov txheej txheem vuam tsim nyog yog nyob ntawm cov yam ntxwv xws li cov tuab ntawm cov forgings, qhov xav tau vuam ceev, thiab qhov xav tau ntawm cov vuam zoo thiab cov khoom zoo.
