Nyias steel yog siv los ua ntau yam qauv. Ntawm cov chaw lag luam, kev ua haujlwm vuam yog nqa tawm siv cov cuab yeej tshwj xeeb uas muab cov khoom lag luam nrog kev sib txuas zoo. Yuav ua li cas ua noj nyias hlau nrog ib tug electrode nyob rau hauv tsev? Cov khoom siv twg ua haujlwm zoo tshaj? Cov no yog cov lus nug uas tsis muaj kev paub txog vuam uas raug yuam ua hauj lwm hauv tsev. Koj yuav pom cov ntaub ntawv hais txog yuav ua li cas vuam nyias hlau nrog electrode hauv kab lus no.
kev nyuaj siab yog dab tsi?
Qhov tseem ceeb ntawm cov lus nug uas cov electrodes yog qhov zoo tshaj plaws rau vuam nyias hlau yog vim qhov tseeb tias yog tias lawv raug xaiv tsis raug lossis yog tsis ua raws li cov cai ntawm kev ua haujlwm, tus tswv yuav muaj teeb meem. Cov no suav nrog cov hauv qab no:
Vim qhov tseeb tias koj yuav tsum tau ua haujlwm nrog cov khoom siv nyias nyias, nws yog ib qho tseem ceeb uas yuav tsum tau ua kom raug xam cov zog tam sim no. Txwv tsis pub, ob peb lub qhov tuaj yeem tsim hauv cov hlau. Lawv kuj yog qhov tshwm sim ntawm kev taw qhia qeeb suture
- Nyob rau hauv kev rau siab tiv thaiv kub hnyiab,ntau welders yog nyob rau hauv ntau dhau ntawm maj mus los ntawm kev sib koom tes. Yog li ntawd, ib qho chaw tsis tiav tseem nyob ntawm qhov chaw kho. Cov kws tshaj lij hu cov cheeb tsam no tsis muaj kev nkag mus. Yog li ntawd, kev sib txuas tau txais nrog kev nruj nruj, thiab cov khoom raug suav tias tsis tsim nyog rau kev ua haujlwm nrog kua. Tsis tas li ntawd, cov hlau muaj qhov tsim kua muag tsawg thiab tawg tsis kam.
- Feem ntau, cov neeg uas tsis paub yuav ua li cas welding nyias hlau nrog ib tug electrode ua lwm yam yuam kev, uas yog, lawv tawm sagging nyob rau sab nraum qab ntawm cov khoom txuas. Yog tias qhov saum npoo zoo li qub los ntawm sab xub ntiag, tom qab ntawd los ntawm sab nraub qaum nws tawm ntau qhov xav tau. Koj tuaj yeem tiv thaiv qhov no nrog kev pab ntawm cov substrates tshwj xeeb. Nws kuj tseem xav kom txo cov amperage lossis hloov cov txheej txheem vuam.
- Nws tshwm sim tias tus tsim yog deformed. Yog vim li cas yog overheating ntawm daim hlau. Txij li thaum cov qauv hlau tseem txias ntawm cov npoo heev, thiab cov khoom sib xyaw ua ke nthuav dav ntawm qhov taw tes ntawm vuam, nthwv dej pib tsim rau saum npoo ntawm cov hlau, uas ua rau kev khoov dav dav. Raws li kev paub welders, qhov teeb meem yog daws los ntawm qhov txias txias - nrog kev pab los ntawm roj hmab hammers, daim ntawv yog straightened. Yog tias qhov no tsis tuaj yeem ua tau, ces koj yuav tsum tau hloov kho cov suturing thaum lub sij hawm vuam.
Txhawm rau zam cov kev tsis txaus no, koj yuav tsum paub yuav ua li cas vuam nyias hlau nrog electrode.
Hais txog cov peev txheej tam sim no
Rau vuam, transformers thiab inverter tuaj yeem yog qhov chaw. Raws li cov kws tshaj lij, thawj qhov kev xaiv tam sim no suav tias yog siv tsis tau thiab tsis ntev yuav raug tso tseg. Txawm hais tias muaj qhov zoo ntawm qhov tsis txaus ntseeg (kev ntseeg siab thiab kev ua siab ntev), transformers squander lub zog daim phiaj ntau dhau, uas feem ntau ua rau kev puas tsuaj rau cov xaim thiab cov khoom siv hluav taws xob. Inverters, ntawm qhov tsis sib xws, tsis cog lub network thiab, raws li cov kws tshaj lij, yuav yog qhov kev xaiv zoo tshaj plaws rau cov neeg siv khoom tshiab. Yog hais tias ua ntej, thaum ua hauj lwm nrog ib tug transformer qhov chaw, lub electrode daig rau saum npoo thiab hlawv lub network, ces nrog ib tug inverter qhov chaw, lub vuam tam sim no tsuas yog tua. Thaum pib ntawm lub ignition ntawm lub arc, ib tug tam sim no surge yog pom nyob rau hauv lub transformer, uas yog undesirable. Qhov teeb meem no txawv nrog inverters - nyob rau hauv cov khoom siv no, vim muaj cov khoom tshwj xeeb cia capacitors, lub zog pumped ua ntej siv.
About arc vuam
Raws li cov kws tshaj lij, kev vam meej ntawm arc vuam nyob ntawm qhov zoo ntawm calcination ntawm consumables. Qhov kub zoo tshaj plaws yog suav tias yog 170 degrees. Nyob rau hauv xws li ib tug thermal tswj, uniform melting ntawm txheej tshwm sim. Nyob rau tib lub sijhawm, nws yog qhov yooj yim los tswj cov arc, tsim cov seam. Vuam electrodes rau nyias cov ntawv hlau yuav tsum yog nrog cov txheej txheem zoo. Raws li cov thev naus laus zis, qhov sib cuam tshuam arc yog tsim los ntawm kev sib cais luv luv ntawm cov electrodes los ntawm cov pas dej sib txuas. Yog hais tias cov khoom muaj ib tug refractory txheej, ces ib hom "visor" yuav tsum tsim nyob rau hauv nws kawg, uas yuav cuam tshuam rau kev sib cuag thiab tsim ib tug arc.
Hais txog ntu ntu ntawm electrodes
Raws li cov kws tshaj lij, lub zog ntawm cov zis tam sim no ncaj qha nyob ntawmntawm txoj kab uas hla ntawm electrode. Ib tug tuab yuav xav tau ib qhov chaw uas yuav muab tau ib tug loj npaum li cas ntawm tam sim no. Yog li, rau ib txoj kab uas hla, ib lub zog qhia tshwj xeeb tau muab, dhau qhov uas nws tsis tuaj yeem mus.
Yog tias txhob txwm tshaj tawm, ces qhov vuam tsuas tsis tsim. Hloov chaw, tsuas yog hlau streaks nrog slag thiab electrode txheej yuav nyob twj ywm ntawm qhov chaw kho. Piv txwv li, yog tias koj ua haujlwm nrog 2.5 hli electrode, qhov tsawg kawg nkaus tam sim no yuav tsum yog 80 amperes. Txog li 110 amperes, nws yog overestimated thaum lawv ua hauj lwm nrog ib tug electrode 3 hli tuab. Kev txiav txim siab los ntawm ntau qhov kev tshuaj xyuas, lub tswv yim los ua vuam nrog electrodes nrog ntu ntu ntawm 3 hli ntawm qhov tam sim no ntawm 70 amperes yog qhov pib ua tsis tiav, vim tsis muaj seam yuav ua haujlwm.
Kuv yuav tsum pib qhov twg?
Ua ntej koj ua cov hlau nyias nrog cov electrode, koj yuav tsum xaiv nws kom raug. Vim lub fact tias koj yuav tau ua noj nrog ib tug tsawg voltage, nws tsis yog advisable siv 4-5 mm electrodes. Txwv tsis pub, hluav taws xob arc yuav "tshem" thiab combustion yuav tsis ua kom tag nrho. Dab tsi electrodes ua noj nyias hlau nrog lub inverter? Kev txiav txim los ntawm ntau qhov kev tshuaj xyuas, electrodes nrog lub thickness ntawm 2-3 hli yuav yog qhov kev xaiv zoo tshaj plaws.
Cov kws tshaj lij qhia dab tsi?
Cov neeg uas tsis paub yuav ua li cas vuam nyias hlau nrog 2 hli electrode yuav tsum siv lub rooj tshwj xeeb suav. Rau cov khoom uas nws thickness tsis tshaj 1 hli, thov ib tug tam sim no ntawm 10 A thiab 1 hlielectrodes. Judging los ntawm ntau cov kev txheeb xyuas, lawv hlawv tawm sai txaus. Yog tias koj yuav tsum ua haujlwm nrog cov hlau ntawm 1 hli, lub zog tam sim no yuav tsum sib txawv ntawm 25 mus rau 35 A. Rau cov vuam zoo li no, koj yuav xav tau cov electrodes nrog ib qho hla ntawm 1.6 hli. 2 hli raug pom zoo rau cov nplooj ntawv nrog lub thickness ntawm 1.5 hli. Qhov taw qhia lub zog tam sim no nyob rau hauv cov ntaub ntawv no yog siab dua thiab cov nqi rau 45-55 A. Rau cov hlau 2 hli tuab, electrodes nrog ib tug ntoo khaub lig seem ntawm 2 hli yog muab. Nyob rau hauv cov ntaub ntawv no, ib tug tam sim no ntawm 65 A yog siv welding nyias hlau nrog ib tug 3 hli electrode? Raws li cov kws tshaj lij pom zoo, cov khoom lag luam nrog cov ntu ntu no yog siv los ua haujlwm nrog hlau 2.5 hli tuab ntawm lub zog tam sim no ntawm 75 A.
About pob tw
Vim qhov tseeb tias cov nplooj ntawv nyias nyias tau koom ua ke, cov khoom siv feem ntau raug hlawv. Txhawm rau tiv thaiv qhov no, koj yuav tsum coj cov npoo ntawm daim hlau kom raug. Feem ntau cov welders nyiam cov phaj sib tshooj. Nyob rau hauv txoj kev no, lub hauv paus yuav raug tsim rau cov hlau weld, tiv thaiv nws los ntawm kev kub hnyiab. Txawm li cas los xij, ntau tus neeg pib xav paub yuav ua li cas vuam nyias hlau nrog 3 hli electrode hauv kev sib koom ua ke? Raws li kev paub welders pom zoo, thaum muab daim hlau, nws tsis tas yuav txiav lawv cov npoo. Kuj tsis tas yuav muaj qhov sib txawv ntawm lawv. Nws yog txaus tsuas yog coj qhov kawg ntawm nplooj ntawv yuav tsum tau welded los ze zog rau ib leeg thiab nqa tawm lawv tacking. Nws yuav yooj yim dua rau kev ua haujlwm nyob rau hauv qis tam sim no thiab nrog kev pab los ntawm cov electrodes nyias.
Awtaub qab vuam txoj kev
Butt welding yog ua los ntawm ntau txoj hauv kev:
- Ua ntej, chav tsev tau teeb tsa rau hom qis. Kev tsim ntawm cov seam yog nqa tawm sai thiab meej raws txoj kab sib txuas. Nws tsis yog tsim nyog los ua oscillatory txav nyob rau hauv rooj plaub no.
- Txoj kev no siv qhov tam sim no nce me ntsis. Txhawm rau tsim ib qho seam, nws raug nquahu kom siv qhov sib cuam tshuam arc. Qhov kev ntsuas no yog vim qhov tseeb tias muab cov khoom siv lub sijhawm kom txias ua ntej "feem" tshiab ntawm cov khoom siv ntxiv rau nws.
- Txoj kev thib peb yuav luag zoo ib yam li yav dhau los. Txawm li cas los xij, nyob rau hauv cov ntaub ntawv no, welders siv tshwj xeeb substrates, lub luag hauj lwm ntawm uas yog los txhawb lub rhuab cheeb tsam thiab tiv thaiv nws los ntawm kev poob. Kev txiav txim siab los ntawm kev txheeb xyuas, nws yog qhov tsis tsim nyog siv lub rooj hlau zoo li lub substrate. Txwv tsis pub, nws yuav yooj yim weld rau cov khoom nws tus kheej. Qhov kev xaiv zoo tshaj plaws yuav yog graphite hauv ob sab phlu.
- Qee cov kws ua haujlwm ua haujlwm staggered welds. Txoj kev no tiv thaiv deformation ntawm cov qauv. Koj tuaj yeem tso cov seams rau hauv qhov chaw me me. Txhawm rau ua qhov no, lub seam tshiab pib tsim los ntawm qhov chaw uas qhov dhau los xaus. Los ntawm txoj kev no, cov khoom yog sib npaug rhuab, tiv thaiv nws deformation.
Kev nce qib ntawm kev ua haujlwm
Ua ntej vuam, cov khoom yuav tsum tau koom nrog yog ua tib zoo ntxuav ntawm xeb. Cov chav tsev uas muab tam sim no ncaj qha yog qhov zoo vim tias koj tuaj yeem siv rov qab polarity rau vuam.
Nws yog qhov txaus los ntxig cov electrode rau hauv lub thawv, uas txuas nrog lub cable nrog lub npe "+", thiab lub cable nrog "-" rau saum npoo ntawm cov hlau. Txoj kev sib txuas no yuav muab cov cua kub loj ntawm cov electrode, thiab cov hlau saum npoo yuav sov dua. Yog tias tus tswv lub hom phiaj kom sov cov khoom sib txuas tsis muaj zog, ces lawv yuav tsum muab tso rau hauv vertically. Raws li cov kws tshaj lij, nws yog ib qho tseem ceeb uas lawv qaij nyob rau hauv 30-40 degrees. Kev ua noj yog nqa tawm ntawm sab saum toj mus rau hauv qab. Lub taub electrode yuav tsum tau txav mus rau hauv ib qho kev taw qhia yam tsis muaj kev sib txawv ntawm ob sab.
About vuam galvanized steel
Cov khoom no tseem hu ua galvanized. Sawv cev nyias nyias ntawm cov hlau uas siv zinc txheej. Ua ntej koom nrog cov npoo, txheej txheej yog tshem tawm tag nrho hauv qhov chaw ntawm galvanization. Qhov no tuaj yeem ua tiav txhua yam siv lub log abrasive, ntawv xuab zeb lossis txhuam hlau.
Tsis phem lub txheej yog hlawv tawm los ntawm lub tshuab vuam. Vim lub fact tias zinc, evaporating ntawm ib tug kub ntawm 900 degrees, emits cov pa phem heev, cov hauj lwm no yuav tsum tau ua sab nraum zoov los yog nyob rau hauv zoo-ventilated qhov chaw. Tom qab txhua kis nrog lub electrode, koj yuav tsum tau khob qhov flux. Thaum zinc raug tshem tawm tag nrho ntawm qhov chaw, koj tuaj yeem ncaj qha mus rau vuam. Galvanized kav feem ntau txuas los ntawm ob qhov hla nrog electrodes ntawm ntau hom. Rau thawj kis, cov khoom uas muaj rutile txheej yog siv. zoo koj tus kheejpom zoo electrodes OZS-4, ANO-4 thiab MP-3. Thaum lub sij hawm vuam, lawv yuav tsum fluctuate nrog ib tug me me amplitude. Txhawm rau tsim cov seam sab saud, cov kws tshaj lij pom zoo siv DSK-50 lossis UONI 13/55 electrodes. Qhov chaw ntawm lub seam kawg yuav tsum dav me ntsis.
