Lub hauv paus ntsiab lus ntawm argon arc vuam
Argon arc vuam yog ib txoj kev vuam uas siv cov roj inert argon ua cov roj tiv thaiv.
Cov yam ntxwv ntawm argon arc vuam
1. Qhov zoo ntawm qhov vuam yog siab. Txij li thaum argon yog ib qho roj inert thiab tsis hnov mob nrog cov hlau, cov ntsiab lus alloy yuav tsis raug hlawv, thiab argon tsis yaj nrog cov hlau. Cov txheej txheem vuam yog qhov tseem ceeb ntawm melting thiab crystallization ntawm cov hlau. Yog li ntawd, kev tiv thaiv cov nyhuv yog zoo dua, thiab ib tug purer thiab high-zoo weld yuav tau.
2. Lub vuam deformation kev nyuaj siab yog me me. Vim hais tias lub arc yog compressed thiab txias los ntawm argon gas ntws, lub tshav kub ntawm lub arc yog concentrated, thiab qhov kub ntawm lub argon arc yog siab heev, yog li ntawd lub tshav kub cuam tshuam cheeb tsam yog me me, yog li qhov kev nyuaj siab thiab deformation thaum lub sij hawm vuam yog me me, tshwj xeeb tshaj yog rau cov yeeb yaj kiab nyias. Vuam ntawm qhov chaw thiab hauv qab vuam ntawm cov kav dej.
3. Nws muaj qhov dav vuam ntau thiab tuaj yeem vuam yuav luag txhua cov ntaub ntawv hlau, tshwj xeeb tshaj yog tsim rau vuam hlau thiab alloys nrog cov khoom siv tshuaj lom neeg.
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Classification ntawm argon arc vuam
1. Raws li cov khoom siv electrode sib txawv, argon arc vuam tuaj yeem muab faib ua tungsten arc vuam (tsis yog-melting electrode) thiab melting electrode argon arc vuam.
2. Raws li nws txoj kev ua haujlwm, nws tuaj yeem muab faib ua phau ntawv, semi-automatic thiab tsis siv neeg argon arc vuam.
3. Raws li lub zog hluav taws xob, nws tuaj yeem muab faib ua DC argon arc vuam, AC argon arc vuam thiab mem tes argon arc vuam.
Kev npaj ua ntej vuam
1. Nyeem daim npav txheej txheem vuam kom nkag siab txog cov khoom ntawm vuam workpiece, cov khoom siv, cov cuab yeej thiab cov txheej txheem cuam tshuam, suav nrog kev xaiv lub tshuab vuam kom raug (xws li vuam aluminium alloy, koj yuav tsum siv lub tshuab AC vuam), thiab xaiv qhov tseeb ntawm tungsten electrodes thiab roj ntws.
▶ Ua ntej tshaj plaws, peb yuav tsum paub qhov vuam tam sim no thiab lwm yam txheej txheem tsis tau los ntawm daim npav txheej txheem vuam. Tom qab ntawd xaiv tungsten electrode (feem ntau hais lus, txoj kab uas hla ntawm 2.4mm feem ntau siv, thiab nws qhov kev hloov pauv tam sim no yog 150 ~ 250A, tshwj tsis yog txhuas).
▶ Qhov loj ntawm lub nozzle yuav tsum raug xaiv raws li txoj kab uas hla ntawm tungsten electrode. 2.5 ~ 3.5 npaug ntawm txoj kab uas hla ntawm tungsten electrode yog lub puab txoj kab uas hla ntawm lub nozzle.
▶ Thaum kawg, xaiv cov roj ntws raws li cov kab uas hla ntawm lub nozzle. 0.8-1.2 npaug ntawm txoj kab uas hla ntawm lub nozzle yog cov pa roj ntws. Qhov ntev ntawm lub tungsten electrode yuav tsum tsis txhob tshaj lub puab txoj kab uas hla ntawm lub nozzle, txwv tsis pub pores yuav yooj yim tshwm sim.
2. Tshawb xyuas seb lub tshuab vuam, cov khoom siv roj, cov khoom siv dej, thiab cov av hauv av puas zoo lawm.
3. Xyuas seb lub workpiece puas tsim nyog:
▶ Txawm tias muaj roj, xeb thiab lwm yam av (lub vuam hauv 20 hli yuav tsum huv thiab qhuav).
▶ Txawm hais tias lub kaum sab xis, qhov sib txawv, thiab blunt ntug yog qhov tsim nyog. Yog tias qhov zawj lub kaum sab xis thiab qhov sib txawv loj, qhov vuam ntim yuav loj thiab vuam tuaj yeem tshwm sim tau yooj yim. Yog tias lub kaum sab xis me me, qhov sib txawv me me, thiab qhov blunt ntug yog tuab, nws yooj yim ua rau tsis tiav fusion thiab tsis tiav vuam. Feem ntau hais lus, lub kaum sab xis yog 30 ° ~ 32 °, qhov sib txawv yog 0 ~ 4mm, thiab ntug blunt yog 0 ~ 1mm.
▶ Lub ntug tsis ncaj ncees lawm tsis tuaj yeem loj dhau, feem ntau hauv 1 hli.
▶ Txawm hais tias qhov ntev thiab tus naj npawb ntawm tack vuam cov ntsiab lus ua tau raws li qhov yuav tsum tau ua, thiab qhov vuam vuam nws tus kheej yuav tsum tsis muaj qhov tsis xws luag.
Yuav ua li cas khiav argon arc vuam
Argon arc yog kev ua haujlwm uas ob txhais tes txav mus rau tib lub sijhawm. Nws yog tib yam li sab laug tes kos ib lub voj voog thiab sab tes xis kos ib lub xwmfab hauv peb lub neej txhua hnub. Yog li ntawd, nws raug pom zoo tias cov neeg uas nyuam qhuav pib kawm argon arc vuam yuav tsum ua cov kev cob qhia zoo sib xws, uas yuav pab tau rau kev kawm argon arc vuam. .
1. Hlau pub: muab faib rau hauv lub filling xaim thiab txheej filling hlau.
▶ Sab nrauv muab tub lim tuaj yeem siv rau hauv qab thiab txhaws. Nws siv lub zog loj dua. Lub taub hau vuam hlau yog nyob rau pem hauv ntej ntawm qhov zawj. Tuav lub vuam hlau nrog koj sab tes laug thiab tsis tu ncua pub nws mus rau hauv lub pas dej molten rau vuam. Qhov sib txawv ntawm qhov zawj yuav tsum muaj qhov sib txawv me me lossis tsis muaj qhov sib txawv.
Nws qhov zoo dua yog tias qhov tam sim no loj thiab qhov sib txawv me me, yog li cov khoom lag luam muaj txiaj ntsig siab thiab kev ua haujlwm tau yooj yim rau tus tswv. Nws qhov tsis zoo yog tias nws yog siv rau priming, tus neeg teb xov tooj tsis tuaj yeem pom qhov melting ntawm blunt ntug thiab qhov siab tshaj ntawm sab nraub qaum, yog li nws yooj yim los tsim unfused thiab undesirable reverse forming.
▶ Cov xaim muab tub lim tsuas yog siv tau rau hauv qab vuam. Siv tus ntiv tes xoo sab laug, ntiv tes taw lossis ntiv tes nruab nrab los tswj cov xaim pub mov. Tus ntiv tes me me thiab ntiv tes ntiv tes tuav cov hlau kom tswj tau qhov kev taw qhia. Cov hlau yog nyob ze rau ntawm ntug blunt nyob rau hauv qhov zawj, ua ke nrog blunt ntug. Rau melting thiab welding, qhov sib txawv ntawm qhov zawj yuav tsum loj dua li txoj kab uas hla ntawm vuam hlau. Yog tias nws yog ib lub phaj, lub vuam hlau tuaj yeem khoov rau hauv ib qho arc.
Qhov zoo dua yog tias cov vuam hlau yog nyob rau sab nraud ntawm qhov zawj, yog li koj tuaj yeem pom meej meej qhov melting ntawm blunt ntug thiab vuam hlau, thiab koj tuaj yeem pom qhov kev txhawb zog ntawm sab nraub qaum nrog koj lub zeem muag peripheral, thiaj li weld yog zoo fused, thiab qhov kev txhawb zog thiab tsis muaj fusion ntawm sab nraub qaum tuaj yeem tau txais. Tswj tau zoo heev. Qhov tsis zoo yog tias kev ua haujlwm nyuaj thiab xav kom tus welder muaj peev xwm ua haujlwm tau zoo. Vim tias qhov sib txawv loj, qhov vuam ntim nce raws li. Qhov sib txawv yog qhov loj, yog li qhov tam sim no tsis tshua muaj, thiab kev ua haujlwm ua haujlwm qeeb qeeb dua li ntawm cov xaim xaim sab nraud.
2. Lub vuam kov yog muab faib ua ib qho tuav tuav thiab mop.
▶ Lub pob zeb tuav yog nias lub vuam nozzle me ntsis rau ntawm vuam seam, thiab co caj npab zoo heev los ua vuam. Nws qhov zoo dua yog tias lub vuam nozzle yog nias rau ntawm lub vuam seam thiab vuam kov yog ruaj khov heev thaum lub sijhawm ua haujlwm, yog li cov vuam seam muaj kev tiv thaiv zoo, qhov zoo yog qhov zoo, zoo nkauj heev, thiab cov khoom tsim nyog tus nqi siab. Tshwj xeeb, nyiaj siv ua haujlwm vuam yog yooj yim heev thiab tuaj yeem siv thaum vuam stainless hlau. Tau cov xim zoo nkauj heev. Qhov tsis zoo yog qhov nyuaj rau kev kawm. Vim lub caj npab swings zoo heev, nws yog tsis yooj yim sua rau weld nyob rau hauv obstacles.
▶ Lub tshuab ntxhua khaub ncaws txhais tau hais tias lub vuam taub hau maj mam lean los yog tsis tiv thaiv vuam seam. Tus ntiv tes me me lossis ntiv tes ntiv tes ntawm sab tes xis kuj leans lossis tsis tawm tsam cov khoom ua haujlwm. Lub caj npab viav vias maj mam thiab rub lub vuam kov rau vuam. Nws qhov zoo yog tias nws yooj yim kawm thiab muaj qhov hloov tau zoo. Nws qhov tsis zoo yog tias cov duab thiab qhov zoo tsis zoo li lub viav vias kov. Tshwj xeeb tshaj yog cov nyiaj siv ua haujlwm welding tsis muaj lub viav vias kov kom yooj yim vuam. Nws yog qhov nyuaj kom tau txais cov xim zoo tshaj plaws thiab cov duab thaum vuam stainless hlau.
3. Arc ignition
Lub tshuab hluav taws xob arc (high-frequency oscillator lossis high-frequency pulse generator) feem ntau yog siv los pib lub arc. Lub tungsten electrode thiab vuam tsis nyob rau hauv kev sib cuag nrog ib leeg kom ignite lub arc. Yog hais tias tsis muaj arc pib, hu rau arc pib yog siv (feem ntau yog siv rau kev tsim kho qhov chaw, tshwj xeeb tshaj yog high-altitude installation), tooj liab los yog graphite tuaj yeem muab tso rau ntawm qhov zawj ntawm qhov vuam kom ignite arc, tab sis txoj kev no muaj teeb meem ntau dua. thiab tsis tshua siv. Feem ntau, vuam hlau yog siv los maj mam rub cov vuam hlau kom ncaj qha luv luv ntawm cov vuam thiab cov tungsten electrode thiab sai sai disconnect rau ignite lub arc.
4. vuam
Tom qab lub arc yog ignited, lub weldment yuav tsum tau preheated rau 3 mus rau 5 vib nas this thaum pib ntawm lub weldment. Hlau pub pib tom qab lub pas dej molten tsim. Thaum welding, lub kaum sab xis ntawm vuam hlau phom yuav tsum tsim nyog thiab cov vuam hlau yuav tsum tau pub sib npaug. Cov phom vuam yuav tsum txav mus rau pem hauv ntej kom du thiab viav vias sab laug thiab sab xis, nrog ob sab me ntsis qeeb thiab nruab nrab me ntsis nrawm dua. Ua tib zoo mloog cov kev hloov pauv hauv lub pas dej molten. Thaum lub pas dej molten loj dua, qhov vuam yuav dav dua los yog concave, qhov vuam ceev yuav tsum tau nrawm los yog vuam tam sim no yuav tsum tau kho rov qab. Thaum lub pas dej molten fusion tsis zoo thiab cov xaim pub mis zoo li tsis muaj zog, qhov vuam ceev yuav tsum raug txo los yog qhov vuam tam sim no yuav tsum tau nce. Yog tias nws yog qhov vuam hauv qab, kev saib xyuas yuav tsum tau tsom rau ntawm cov npoo ntawm ob sab ntawm qhov zawj thiab cov ces kaum ntawm lub qhov muag. Nrog koj lub zeem muag peripheral ntawm lwm sab ntawm lub seam, xyuam xim rau cov kev hloov hauv lwm qhov siab.
5. kaw arc
Yog hais tias lub arc raug kaw ncaj qha, nws yog ib qho yooj yim los tsim shrinkage qhov. Yog tias rab phom vuam muaj qhov pib arc, lub arc yuav tsum raug kaw tsis tu ncua lossis hloov kho rau qhov tsim nyog arc tam sim no thiab lub arc yuav tsum tau kaw maj mam. Yog tias lub tshuab vuam tsis muaj qhov pib arc, lub arc yuav tsum maj mam coj mus rau qhov zawj. Tsis txhob tsim qhov shrinkage ntawm ib sab. Yog hais tias shrinkage qhov tshwm sim, lawv yuav tsum tau polished huv si ua ntej welding.
Yog hais tias lub arc kaw yog ntawm ib qho kev sib koom ua ke, qhov sib koom ua ke yuav tsum tau muab tso rau hauv ib qho bevel ua ntej. Tom qab qhov sib koom ua ke yog tag nrho melted, weld rau pem hauv ntej 10 ~ 20mm thiab maj mam kaw lub arc kom tsis txhob shrinkage kab noj hniav. Hauv kev tsim khoom, nws feem ntau pom tias cov pob qij txha tsis polished rau hauv bevels, tab sis lub sijhawm vuam ntawm cov pob qij txha yog ncaj qha lengthened. Qhov no yog ib tug cwj pwm phem heev. Nyob rau hauv txoj kev no, cov pob qij txha yooj yim rau concave, unfused pob qij txha thiab disjointed rov qab nto, uas cuam tshuam rau cov tsos ntawm txoj kev. Piv txwv li, yog hais tias nws yog ib tug siab alloy Cov khoom kuj yog ib qho yooj yim mus tawg.
Tom qab welding, xyuas kom meej tias cov tsos yog txaus siab. Tua lub hwj chim thiab roj thaum tawm mus.
Post lub sij hawm: Dec-19-2023
