Koj puas tau ntsib qhov tsis xws luag xws li tawg loj thaum vuam, tsim tsis zoo, thiab ntau qhov pores tom qab vuam?Thaum koj tseem tab tom txiav txim siab seb nws puas yog vim qhov teeb meem ntawm cov txheej txheem laser welding parameter, koj puas paub tias kev siv vuam shielding roj yog qhov tseem ceeb uas cuam tshuam rau kev tsim thiab kev ua haujlwm.Xaiv qhov zoo tshaj plaws welding shielding roj ua tau zoo txhim kho vuam zoo thiab Txoj kev ua tau zoo.
Txij li thaum vuam shielding roj tseem ceeb heev, ces: Lub luag hauj lwm ntawm shielding gas yog dab tsi?Yuav ua li cas xaiv hom shielding gas?Yuav ua li cas lub shielding gas yuav tsum tau tshuab thaum lub sij hawm vuam?Tom ntej no, Hangao Tech (SEKO Machinery) yuav coj sawv daws mus kawm ntxiv.
Lub luag haujlwm ntawm kev tiv thaiv roj
Nyob rau hauv laser vuam, shielding roj yuav cuam tshuam rau weld tsim, weld zoo, weld nkag qhov tob thiab nkag dav.Feem ntau, tshuab hluav taws xob tiv thaiv yuav ua rau muaj txiaj ntsig zoo ntawm cov vuam, tab sis nws kuj yuav ua rau muaj kev puas tsuaj.Los cuam tshuam tsis zoo.
Cov teebmeem zoo
1) Lub tshuab hluav taws xob raug cai yuav tiv thaiv lub pas dej ua kom zoo kom txo lossis tsis txhob oxidation;
2) Qhov tseeb tshuab ntawm shielding gas tuaj yeem txo qhov tawg ntawm cov txheej txheem vuam;
3) Lub tshuab hluav taws xob raug cai tuaj yeem txhawb nqa kev sib kis ntawm lub pas dej ua ke thaum lub sij hawm solidification, yog li ntawd lub weld yog tsim uniformly thiab zoo nkauj;
4) Qhov tseeb tshuab ntawm shielding gas tuaj yeem txo cov nyhuv shielding ntawm cov hlau vapor plume lossis plasma huab cua ntawm lub laser, thiab nce qhov kev siv tau zoo ntawm lub laser;
5) Qhov tseeb tshuab ntawm shielding gas tuaj yeem txo qhov vuam seam porosity.
Raws li ntev raws li hom roj, cov roj ntws, thiab tshuab tshuab raug xaiv kom raug, cov nyhuv xav tau tuaj yeem tau txais.
Txawm li cas los xij, kev siv tsis raug ntawm kev tiv thaiv cov roj kuj tseem yuav cuam tshuam rau kev vuam
1) Kev tshuab tsis raug ntawm kev tiv thaiv roj tuaj yeem ua rau lub vuam tsis zoo:
① Xaiv qhov tsis ncaj ncees lawm hom roj yuav ua rau cov kab nrib pleb hauv cov vuam, thiab tseem tuaj yeem ua rau cov khoom siv hluav taws xob ntawm cov vuam txo qis;
② Xaiv qhov tsis ncaj ncees lawm lub tshuab nqus dej yuav ua rau oxidation hnyav dua ntawm cov vuam (txawm tias qhov ntws loj dhau los yog me dhau), thiab kuj tseem tuaj yeem ua rau cov hlau pas hlau vuam raug cuam tshuam los ntawm sab nraud quab yuam thiab ua rau lub vuam tawg lossis daim ntawv. tsis sib npaug;
③ Xaiv qhov tsis ncaj ncees lawm tshuab tshuab yuav ua rau lub vuam seam tsis ua tiav cov txiaj ntsig kev tiv thaiv lossis txawm tias qhov tseem ceeb tsis muaj kev tiv thaiv los yog muaj kev cuam tshuam tsis zoo rau lub vuam seam tsim;
2) Lub tshuab hluav taws xob tiv thaiv yuav muaj qee yam cuam tshuam rau kev nkag mus ntawm vuam, tshwj xeeb tshaj yog thaum vuam nyias daim hlau, nws yuav txo qhov kev nkag mus ntawm vuam.
Hom kev tiv thaiv roj
Feem ntau siv cov shielding gases rau laser welding feem ntau muaj xws li N2, Ar, Nws, thiab lawv lub cev thiab tshuaj muaj zog sib txawv, thiab yog li ntawd lawv cov teebmeem ntawm vuam kuj txawv.
Nitrogen N2
Tus nqi yog qhov pheej yig tshaj plaws, tab sis nws tsis haum rau vuam qee yam stainless hlau.Lub zog ionization ntawm N2 yog nruab nrab, siab dua li ntawm Ar thiab qis dua li ntawm Nws.Nyob rau hauv qhov kev txiav txim ntawm laser, ionization degree yog qhov nruab nrab, uas tuaj yeem txo qhov tsim ntawm cov huab cua hauv plasma thiab nce qhov kev siv tau zoo ntawm laser.Nitrogen tuaj yeem cuam tshuam nrog aluminium alloy thiab carbon steel ntawm qhov kub thiab txias los tsim nitrides, uas yuav ua rau kom cov brittleness ntawm weld, txo qhov toughness, thiab muaj kev cuam tshuam ntau dua rau cov khoom siv ntawm cov khoom sib txuas.Yog li ntawd, nws tsis pom zoo kom siv nitrogen.Aluminium alloy thiab carbon steel welds yog tiv thaiv.
Cov nitride uas tsim los ntawm cov tshuaj tiv thaiv ntawm nitrogen thiab stainless hlau tuaj yeem ua rau lub zog ntawm qhov sib koom ua ke, uas yuav pab txhim kho cov khoom siv ntawm lub vuam.Yog li ntawd, nitrogen tuaj yeem siv los ua cov roj tiv thaiv thaum vuam stainless hlau.
Argon Ar
Tus nqi pheej yig dua, qhov ceev yog siab dua, thiab kev tiv thaiv zoo dua.Qhov saum npoo ntawm qhov vuam yog smoother dua li cov roj helium, tab sis nws yog qhov raug rau qhov kub ntawm cov hlau plasma ionization.Sib sib zog nqus.Lub zog ionization ntawm Ar yog qhov tsawg, thiab cov qib ionization siab nyob rau hauv qhov kev txiav txim ntawm laser, uas tsis tsim nyog rau kev tswj cov tsim ntawm plasma huab, thiab yuav muaj qee yam cuam tshuam rau kev siv laser.Txawm li cas los xij, kev ua haujlwm ntawm Ar yog qhov tsawg heev thiab nws nyuaj rau kev sib cuam tshuam nrog cov hlau.Tus nqi ntawm Ar tsis siab.Tsis tas li ntawd, qhov ntom ntawm Ar yog siab dua, uas yog qhov zoo rau lub dab dej rau sab saum toj ntawm lub pas dej weld, thiab tuaj yeem tiv thaiv lub pas dej weld zoo dua, yog li nws tuaj yeem siv los ua cov pa hluav taws xob tiv thaiv.
Helium Nws
Tus nqi yog kim dua, tab sis cov nyhuv yog qhov zoo tshaj plaws, kom lub laser tuaj yeem hla ncaj qha thiab ncav cuag qhov chaw ntawm lub workpiece yam tsis muaj kev thaiv.Lub zog ionization ntawm Nws yog qhov siab tshaj plaws, thiab qib ionization tsawg heev nyob rau hauv qhov kev txiav txim ntawm laser, uas tuaj yeem tswj tau qhov tsim ntawm cov huab cua hauv plasma.Lub laser tuaj yeem ua rau cov hlau zoo heev, thiab cov haujlwm ntawm Nws yog qhov tsawg heev, thiab nws yeej tsis muaj tshuaj lom nrog cov hlau.Nws yog ib qho zoo shielding roj rau vuam seams, tab sis tus nqi ntawm Nws yog siab dhau lawm.Feem ntau, cov khoom lag luam loj yuav tsis siv cov roj no.Nws feem ntau yog siv rau kev tshawb fawb txog kev tshawb fawb lossis cov khoom lag luam nrog tus nqi ntxiv.
Hangao Tech (SEKO Machinery) muaj ntau tshaj 20 xyoo ntawm kev paub nyob rau hauv lub stainless hlau muaj yeeb nkab ntau lawm kab raj ua tshuab raug kev lag luam.Pab pawg R & D paub tab thiab cov kws tshaj lij kev sib dhos yuav ua ntau yam kev debugging thiab rov ua pov thawj ntawm txhua kab ntau lawm ua ntej xa khoom, txhawm rau ua kom cov khoom siv ntau tshaj plaws.Txwv qhov ua tau zoo thiab txo qhov nyuaj ntawm kev teeb tsa tom qab thiab kev debugging rau cov neeg siv khoom.
