Qhov sib txawv ntawm weld zoo li zoo
Argon arc vuam
Lub weld tsos ntawm argon arc vuam feem ntau zoo nkauj dua. Nyob rau hauv tsis-melting electrode argon arc vuam (TIG), vim hais tias cov tungsten electrode tsis yaj, lub arc yog ruaj khov thiab concentrated, thiab cov duab thiab qhov loj ntawm lub pas dej molten yuav raug tswj kom raug. Nws txoj kev hloov pauv yog ua tiav los ntawm electromagnetic quab yuam thiab nto nro, thiab cov txheej txheem kev hloov pauv yog sib xws thiab du. Qhov no ua rau cov npoo npoo du thiab tiaj tus, cov ntses nplai qauv zoo thiab tsis tu ncua, thiab yuav luag tsis muaj spatter. Piv txwv li, thaum welding stainless hlau los xij, cov tsos zoo ntawm cov vuam yog siab heev, uas tuaj yeem ua tau raws li lub sijhawm uas yuav tsum tau nruj me ntsis ntawm cov tsos, xws li vuam stainless hlau cookware, kho kom zoo nkauj, thiab lwm yam.
Txawm hais tias muaj qee qhov kev hloov pauv hauv cov hluav taws xob argon arc vuam (MIG), cov tsos ntawm cov vuam tseem zoo heev vim muaj kev tiv thaiv zoo ntawm argon roj thiab qhov ruaj khov arc. Txawm li cas los xij, piv nrog TIG vuam, MIG vuam tuaj yeem tsim me ntsis ntau dua vim qhov sib txawv ntawm kev hloov pauv, tab sis cov spatters no tseem tsawg dua li cov roj tiv thaiv vuam (tshwj xeeb tshaj yog cov pa roj carbon dioxide shielded vuam), thiab tuaj yeem tswj tau zoo los ntawm kev kho cov khoom siv. tsim nyog welding parameter.
Gas shielded vuam
Cov tsos zoo ntawm cov vuam ntawm carbon dioxide gas shielded vuam (ib tug neeg sawv cev ntawm cov roj shielded vuam) yog me ntsis qis dua. Cov pa roj carbon monoxide (CO) thiab cov pa oxygen (O₂) uas tsim los ntawm kev decomposition ntawm carbon dioxide nyob rau hauv qhov kub thiab txias ntawm lub arc yuav ua rau ib tug ntau oxidation cov tshuaj tiv thaiv ntawm cov tee dej thiab cov molten pas dej ua ke hlau. Cov tshuaj tiv thaiv oxidation no ua rau tsis ruaj khov hloov pauv thiab ua kom tawg ntau dua. Spatter yuav ua raws li qhov chaw ntawm lub vuam, cuam tshuam qhov flatness thiab smoothness ntawm weld. Txawm hais tias spatter tuaj yeem raug txo los ntawm kev ntxiv cov deoxidizers (xws li silicon, manganese, thiab lwm yam) rau lub vuam hlau, nws nyuaj rau tshem tawm tag nrho. Txawm li cas los xij, thaum welding qee qhov chaw uas tsis muaj qhov tshwj xeeb siab rau cov tsos, xws li lub tsev steel qauv, cov tsos ntawm cov welding tseem yog qhov tsim nyog.
Qhov sib txawv hauv qhov zoo ntawm welds
Ntxim rau tsim pores
Argon arc vuam:Argon siv nyob rau hauv argon arc vuam yog ib qho roj inert, uas tuaj yeem tiv thaiv huab cua los ntawm kev nkag mus rau hauv lub pas dej molten thaum vuam. Yog li ntawd, qhov ua tau ntawm qhov pores hauv argon arc vuam welds yog qhov tsawg. Tshwj xeeb tshaj yog thaum welding non-ferrous hlau (xws li txhuas, magnesium) thiab high-alloy steels, vim hais tias cov ntaub ntawv no yog rhiab heev rau qhov hws, lub inert roj tiv thaiv ntawm argon arc vuam yuav ua tau raws li qhov yuav tsum tau welding. Piv txwv li, thaum welding aluminium alloys, argon tuaj yeem tiv thaiv cov pa phem xws li hydrogen (H₂) los ntawm kev yaj mus rau hauv lub pas dej molten, yog li txo cov tiam ntawm pores.
Gas shielded vuam:Hauv cov pa roj carbon dioxide shielded vuam, carbon dioxide roj nws tus kheej muaj qee yam oxidizing khoom. Nyob rau hauv qhov kub ntawm lub arc, carbon dioxide yuav decompose los tsim carbon monoxide (CO). Yog tias lub pas dej molten solidifies sai heev, CO yuav tsis muaj sij hawm los khiav thiab qhov pores yuav tsim nyob rau hauv lub vuam. Ntxiv mus, yog tias cov roj tiv thaiv tsis txaus lossis muaj cua hauv qhov chaw vuam, huab cua tuaj yeem nkag mus rau hauv lub pas dej molten, uas yuav ua rau muaj qhov tshwm sim ntawm qhov pore. Txawm li cas los xij, los ntawm kev ua kom zoo dua cov vuam tsis zoo (xws li kho cov vuam ceev, roj ntws, thiab lwm yam) thiab siv cov kev tiv thaiv cua kom tsim nyog, qhov kev pheej hmoo ntawm qhov hws tuaj yeem txo qis rau qee yam.
Purity ntawm weld hlau thiab hlawv ntawm alloy ntsiab
Argon arc vuam:Lub inert xwm ntawm argon ua rau lub purity ntawm weld hlau siab dua. Thaum lub sij hawm vuam txheej txheem, cov ntsiab lus alloy tsis yooj yim oxidized thiab hlawv, thiab tuaj yeem khaws cia zoo hauv cov hlau vuam. Piv txwv li, thaum welding stainless hlau, alloy cov ntsiab lus xws li chromium (Cr) thiab npib tsib xee (Ni) tuaj yeem tswj hwm lawv cov ntsiab lus tseem ceeb hauv kev tiv thaiv argon, yog li ua kom ntseeg tau tias corrosion kuj thiab lwm yam khoom ntawm cov vuam zoo ib yam li cov khoom ntawm niam txiv. .
Gas shielded vuam:Vim lub oxidizing xwm ntawm cov shielding roj, alloy ntsiab nyob rau hauv lub vuam hlau yog yooj yim oxidized nyob rau hauv carbon dioxide roj shielded vuam. Piv txwv li, thaum welding hlau alloy, qee cov ntsiab lus alloy yuav hnov mob nrog cov pa oxygen, ua rau lawv cov ntsiab lus hauv cov vuam thiab cuam tshuam rau kev ua haujlwm ntawm vuam. Txawm li cas los xij, los ntawm kev ntxiv cov ntsiab lus alloy tsim nyog rau lub vuam hlau rau kev ntxiv, qhov kev poob no tuaj yeem raug them rau qee yam.
Qhov sib txawv ntawm txhua yam khoom thiab corrosion kuj ntawm welds
Argon arc vuam:Vim lub siab purity ntawm weld hlau thiab tsawg burnout ntawm alloy ntsiab, cov neeg kho tshuab zog thiab corrosion kuj ntawm argon arc vuam welds feem ntau zoo dua. Thaum vuam cov hlau tsis-ferrous thiab alloy steels, lub zog, toughness thiab lwm yam khoom siv ntawm lub vuam tuaj yeem ua tau zoo nrog cov khoom siv niam txiv. Ntxiv mus, rau cov ntaub ntawv uas yuav tsum tau corrosion kuj (xws li stainless hlau thiab txhuas alloys), corrosion kuj ntawm argon arc vuam welds tuaj yeem ncav cuag qib siab dua thiab tuaj yeem ua tau raws li qhov yuav tsum tau siv ntev hauv qhov chaw hnyav.
Gas shielded vuam:Cov khoom siv hluav taws xob ntawm cov pa roj carbon dioxide shielded vuam vuam tuaj yeem ncav cuag ib qib zoo dua nyob rau hauv qhov tsim nyog vuam tsis thiab vuam hlau xaiv. Txawm li cas los xij, vim tias muaj peev xwm ntawm cov hlau alloy burnout thiab me ntsis oxygen cov ntsiab lus nyob rau hauv nws cov hlau weld, nws yuav yog me ntsis tsis txaus nyob rau hauv tej lub sij hawm uas tsis tshua muaj siab xav tau rau txhua yam khoom thiab corrosion kuj. Txawm li cas los xij, thaum welding cov qauv zoo tib yam ntawm cov pa roj carbon steel thiab cov hlau tsis tshua muaj hlau, tsuav yog cov txheej txheem vuam raug tswj tau zoo, nws cov khoom siv kho tshuab thiab corrosion kuj tseem tuaj yeem ua tau raws li kev siv.
