Kev ua haujlwm ntawm kev tiv thaiv roj hauv cov txheej txheem laser vuam
(1) Cov roj tiv thaiv tuaj yeem tiv thaiv lub taub hau laser los ntawm cov pa phem hlau thiab cov kua tee dej sputtering.
(2) Cov hlau vapor absorbs lub laser beam thiab ionizes rau hauv cov huab plasma. Yog tias muaj cov ntshav ntau dhau lawm, lub laser beam tau noj los ntawm plasma rau qee yam. Cov roj thaiv kev tiv thaiv tuaj yeem cuam tshuam cov hlau vapor plumes lossis cov huab cua hauv plasma, txo cov nyhuv tiv thaiv ntawm lub laser, thiab ua rau kom siv tau zoo ntawm lub laser.
(3) Cov roj tiv thaiv tuaj yeem tiv thaiv lub pas dej molten. Thaum qee cov ntaub ntawv raug welded, qhov saum npoo oxidation tuaj yeem tsis quav ntsej. Kev tiv thaiv kuj tuaj yeem tsis quav ntsej. Txawm li cas los xij, rau feem ntau daim ntawv thov, helium, argon, nitrogen thiab lwm yam gases feem ntau siv rau kev tiv thaiv, yog li ntawd lub workpiece yuav zam oxidation thaum lub sij hawm vuam.
Commonly tiv thaiv roj rau laser vuam
(1) Helium: siab ionization zog, qis ionization degree nyob rau hauv qhov kev txiav txim ntawm laser, tuaj yeem tswj tau qhov tsim ntawm plasma huab, thiab muaj kev ua haujlwm tsawg, yeej tsis muaj tshuaj lom neeg nrog cov hlau, nws yog ib qho zoo heev tiv thaiv roj. Txawm li cas los xij, tus nqi ntawm helium yog siab dhau lawm thiab feem ntau yog siv rau kev tshawb fawb tshawb fawb.
(2) Argon roj: Lub zog ionization kuj 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; tab sis nws cov dej num tsis tshua muaj, uas yog qhov nyuaj rau kev sib piv nrog cov khoom siv Cov hlau tau dhau los ua cov tshuaj tiv thaiv, thiab tus nqi tsis siab, yog li nws tuaj yeem siv los ua cov pa roj tiv thaiv. .
(3) Nitrogen: nruab nrab ionization zog, siab dua argon thiab qis dua helium. Nitrogen tuaj yeem ua tshuaj lom nrog aluminium alloy thiab carbon steel ntawm qhov kub thiab txias los tsim cov nitrides, uas yuav ua rau kom cov brittleness ntawm weld, txo qhov toughness, thiab yuav 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 cov khoom siv vuam. Yog li ntawd, nitrogen tuaj yeem siv los ua cov roj tiv thaiv thaum vuam stainless hlau.
Txoj kev tiv thaiv roj cua tshuab
Tam sim no muaj ob txoj hauv kev tseem ceeb los tshuab hauv kev tiv thaiv roj:
(1) Nws yog kev tiv thaiv sab nraud ntawm sab ncej
(2) Nws yog kev tiv thaiv coaxial, raws li qhia hauv daim duab hauv qab no.
Lub shielding gas cua tshuab tsis tsuas yog yuav tsum tau tiv thaiv lub weld pas dej ua ke nyob rau hauv lub sij hawm, tab sis kuj yuav tsum tau tiv thaiv lub cia li solidified cheeb tsam uas tau welded. Yog li ntawd, sab-shaft sab tshuab kev tiv thaiv feem ntau yog siv, vim hais tias txoj kev tiv thaiv no kuj yog qhov kev tiv thaiv ntau yam ntawm txoj kev tiv thaiv coaxial yog dav dua, tshwj xeeb tshaj yog rau thaj tsam uas cov welding tau cia li solidified.
Sideshaft side blowing Rau cov ntawv thov engineering, tsis yog txhua yam khoom tuaj yeem tiv thaiv los ntawm lub tshuab sab nraud. Rau qee cov khoom tshwj xeeb, tsuas yog kev tiv thaiv coaxial tuaj yeem siv. Nws yuav tsum tau tsom los ntawm cov khoom tsim thiab kev sib koom ua ke. Kev xaiv deev.
Rau cov weld zoo yog ncaj, daim ntawv sib koom ua ke tuaj yeem yog pob qij txha, pob qij txha, pob qij txha los yog sib tshooj welded. Hom khoom no txais yuav txoj kev tiv thaiv sab nraud.
Rau cov khoom uas nws cov weld zoo yog ncig los yog polygonal, thiab cov ntaub ntawv sib koom ua ke yog pob qij txha, pob qij txha, sib tshooj vuam pob qij txha, thiab lwm yam, nws yog qhov zoo dua los siv coaxial tiv thaiv rau hom khoom no.
Cov saum toj no yog kev ua haujlwm thiab kev tiv thaiv ntawm laser vuam shielding roj. Hauv kev siv tiag tiag, nws yuav tsum raug xaiv raws li qhov xwm txheej tiag tiag.
Post lub sij hawm: Nov-19-2021