Nyob rau hauv cov txiv ntoo projection welding, nws tsis yog ib qho yooj yim rau cov weld me ntsis kom pom cov xim daj tom qab vuam txheej txheem. Kab lus no hais txog qhov ua rau tom qab qhov tshwm sim yellowing thiab muab cov kev daws teeb meem los txo qhov teeb meem no, kom ntseeg tau tias kev tsim cov welds zoo.
Ua rau Yellowing:
- Oxidation: Cov xim daj tuaj yeem tshwm sim vim oxidation ntawm qhov chaw vuam thaum lub sijhawm vuam. Cov yam ntxwv xws li kev tiv thaiv roj tsis txaus lossis kev tu tsis raug ntawm qhov chaw ua haujlwm tuaj yeem ua rau muaj cov pa oxygen ntau ntxiv, ua rau oxidation.
- Kev Tiv Thaiv Kab Mob: Kev muaj cov kab mob sib kis, xws li roj, roj, lossis cov coatings saum npoo ntawm qhov chaw ua haujlwm lossis cov txiv ntoo, tuaj yeem ua rau yellowing ntawm qhov chaw weld. Cov kab mob no tuaj yeem raug thermal degradation thaum lub sij hawm vuam txheej txheem, ua rau discoloration.
- Thaum tshav kub kub ntau dhau: Cov khoom siv hluav taws xob ntau dhau los yog lub sijhawm vuam ntev kuj tuaj yeem ua rau muaj xim tsis zoo ntawm qhov chaw vuam. Overheating tuaj yeem ua rau muaj kev sib txuas ntawm intermetallic lossis kev hloov pauv hauv microstructure, ua rau lub ntsej muag daj.
Solutions rau Chaw Nyob Yellowing:
- Kev Tu Kom Zoo: Ua tib zoo ntxuav lub workpiece thiab txiv ntoo saum npoo ua ntej vuam kom tshem tawm cov kab mob. Siv cov txheej txheem ntxuav kom tsim nyog, xws li degreasing lossis hnyav ntxuav, kom huv si thiab tsis muaj paug.
- Kev Tiv Thaiv Hluav Taws Xob txaus: Ua kom muaj kev tiv thaiv roj txaus txaus thaum lub sijhawm vuam kom txo tau cov pa oxygen hauv huab cua. Qhov no tuaj yeem ua tiav los ntawm kev kho cov roj ntws, kev ua kom zoo ntawm qhov chaw nozzle, los yog siv lub khob roj los yog cov ntaub npog los txhim kho cov roj tiv thaiv.
- Optimize Welding Parameters: Kho qhov vuam tsis zoo, xws li tam sim no, qhov hluav taws xob, thiab lub sijhawm vuam, kom ua tiav qhov kev pom zoo ntawm cov khoom siv hluav taws xob thiab vuam zoo. Tsis txhob muaj cua sov ntau dhau uas tuaj yeem ua rau tsis muaj xim los ntawm kev ua kom zoo dua qhov tsis zoo raws li cov khoom siv thiab thickness.
- Ntsuas Cov Khoom Siv Tau Zoo: Txheeb xyuas qhov sib xws ntawm cov khoom siv ua haujlwm, cov khoom siv txiv ntoo, thiab cov txheej txheej saum npoo. Cov ntaub ntawv tsis sib xws lossis cov txheej txheem tuaj yeem ua rau muaj kev cuam tshuam tsis zoo thaum vuam, ua rau muaj xim tsis zoo. Xaiv cov ntaub ntawv sib xws los yog txiav txim siab tshem tawm cov txheej tsis sib xws ua ntej vuam.
- Tom qab Weld Cleaning: Tom qab ua tiav cov txheej txheem vuam, ua tom qab vuam tu kom tshem tawm cov khoom seem los yog tawg uas tuaj yeem ua rau muaj xim tsis zoo. Siv cov kev tu kom tsim nyog raws li cov kev cai tshwj xeeb ntawm daim ntawv thov.
Lub yellowing ntawm weld me ntsis nyob rau hauv cov txiv ntseej projection welding yuav ntaus nqi rau oxidation, paug, los yog kub heev. Los ntawm kev siv cov kev coj ua kom zoo, ua kom muaj kev tiv thaiv kev tiv thaiv kom zoo, txhim kho cov vuam tsis zoo, ntsuas cov khoom siv sib xws, thiab ua haujlwm tom qab vuam, cov tuam ntxhab tuaj yeem txo qhov teeb meem ntawm yellowing thiab ua tau zoo welds. Kev saib xyuas ntawm cov txheej txheem vuam tsis tu ncua thiab ua raws li cov kev coj ua zoo tshaj plaws yuav pab ua kom muaj qhov zoo sib xws ntawm vuam thiab tag nrho cov khoom zoo.
Post lub sij hawm: Lub Xya hli ntuj-12-2023
