Fusion Vuam: Lub zog tseem ceeb ntawm kev lag luam vuam

Fusion welding yog feem ntau siv vuam qeb. Nrog rau qhov zoo ntawm kev tuaj yeem koom nrog cov phaj tuab thiab muaj lub zog vuam siab, nws tau dhau los ua cov thev naus laus zis hauv cov teb xws li cov qauv hlau, cov hlab ntsha siab, thiab kev tsim cov nkoj. Nws suav nrog ntau txoj hauv kev xws li shielded hlau arc vuam (SMAW), roj hlau arc vuam (GMAW), thiab laser vuam, cov thawj ob yog "feem ntau siv hom" hauv kev tsim khoom thiab tu.

(I) Shielded Hlau Arc Vuam (SMAW): Yooj Yim thiab Yooj Yim "Tag Nrho-Rounder"

Shielded hlau arc vuam (SMAW) yog qhov yooj yim tshaj plaws thiab hloov tau yooj yim vuam txoj kev. Nws melts hlau los ntawm arc tshav kub ntawm lub electrode thiab lub workpiece. Nrog cov cuab yeej siv yooj yim thiab kev ua haujlwm qis, nws yog qhov tshwj xeeb tshaj yog tsim rau kev saib xyuas ntawm qhov chaw, ib zaug / me-batch ntau lawm, thiab vuam ntawm cov txheej txheem nyuaj.

1. Cov ntsiab lus tseem ceeb thiab cov khoom siv sib xyaw

Lub hauv paus ntsiab lus: Cov txheej txheem ntawm lub hauv ntej kawg ntawm cov electrode kub hnyiab los ua ib qho kev tiv thaiv roj, cais huab cua. Lub arc tshav kub melts lub electrode core thiab lub workpiece los ua ib tug molten pas dej ua ke. Tom qab txias, cov seem ntawm txheej txheej slag los tiv thaiv cov hlau vuam.

Khoom siv: AC lossis DC arc vuam tshuab, vuam electrode tuav, vuam electrodes (xaiv raws li lub hauv paus hlau; piv txwv li, E4303 electrodes feem ntau yog siv rau cov hlau tsis tshua muaj carbon steel), thiab cov khoom siv tiv thaiv (welding kaus mom hlau, hnab looj tes insulated, vuam khaub ncaws).

2. Cov ntsiab lus tseem ceeb ua haujlwm

Kev Npaj Ua Ntej Vuam: Electrodes yuav tsum tau qhuav raws li qhov yuav tsum tau ua (150-200 ° C rau acidic electrodes, 350-400 ° C rau cov electrodes yooj yim). Tshem cov roj, xeb, thiab oxide nplai los ntawm qhov chaw ua haujlwm kom tsis txhob muaj porosity; kho qhov tam sim no raws li lub phaj thickness, feem ntau ua raws li lub hauv paus ntsiab lus ntawm "10-15A ib hli ntawm phaj thickness" (piv txwv li, 60-90A rau 6 hli tuab steel daim hlau).

Vuam txheej txheem: Ignite lub arc siv "scratching txoj kev" (zoo ib yam li striking ib match) los yog "kov txoj kev" (tshwj xeeb cuam tshuam ntawm electrode ntawm lub workpiece). Tswj lub arc ntev ntawm 10-15mm (kwv yees li 0.8-1.2 npaug ntawm electrode txoj kab uas hla); tuav lub kaum sab xis ntawm 60-80 ° nruab nrab ntawm cov electrode thiab cov khoom ua haujlwm, thiab txav mus rau ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov kev taw qhia vuam. Tswj qhov loj ntawm lub pas dej molten mus rau 1.5-2 npaug ntawm txoj kab uas hla ntawm electrode kom tsis txhob muaj qhov cuam tshuam los ntawm lub pas dej loj loj los yog tsis muaj fusion vim lub pas dej me me ntau dhau.

Kev kho tom qab vuam: Tom qab txias, siv lub tshuab slag los ntxuav cov slag. Tshawb xyuas qhov chaw weld rau qhov tsis xws luag xws li porosity, undercut, thiab slag suav nrog. Ua qhov kev sim uas tsis muaj kev puas tsuaj yog tias tsim nyog.

3. Tej yam kev siv thiab kev txwv

Daim ntawv thov Scenarios: Kev tsim kho steel qauv, kev kho kav dej, kev siv tshuab vuam, kev tsim kho choj, thiab lwm yam, tshwj xeeb tshaj yog tsim rau cov xwm txheej sab nraum zoov lossis cov uas tsis muaj cov khoom siv hluav taws xob ruaj khov.

Kev txwv: Kev siv vuam tsis zoo (kev ua haujlwm ntawm tes), vuam zoo heev cuam tshuam los ntawm tus neeg teb xov tooj cov kev txawj ntse, thiab nws tsis haum rau cov ntaub ntawv oxidized yooj yim xws li txhuas alloys thiab stainless hlau.