【Abstract】Tungsten inert gasi welding inzira yakakosha yewelding mukugadzirwa kwemazuva ano kwemaindasitiri. Iri bepa rinoongorora kushushikana kwestainless simbi sheet welding pool uye welding deformation yendiro yakatetepa, uye inosuma iyo welding process yakakosha uye inoshanda mashandisirwo emanual tungsten inert gasi welding yestainless simbi mahwendefa matete.
Nhanganyaya
Nekuenderera mberi kwekuenderera mberi kweindasitiri yekugadzira yemazuva ano, simbi isina tsvina mahwendefa anoshandiswa zvakanyanya mukudzivirira, ndege, indasitiri yemakemikari, zvemagetsi uye mamwe maindasitiri, uye welding ye1-3mm simbi isina tsvina mahwendefa ari kuwedzera zvakare. Naizvozvo, zvinonyanya kukosha kugona maitiro akakosha esimbi isina tsvina yakaonda plate welding.
Tungsten inert gas welding (TIG) inoshandisa pulsed arc, iyo ine hunhu hwekupisa kwakadzika kupinza, kupisa kwakadzika, kupisa kudiki kunokanganisa nzvimbo, kudiki welding deformation, yunifomu yekupisa kupisa, uye kutonga kuri nani kwesimba remutsara; iyo inodzivirira mhepo inoyerera ine inotonhora mhedzisiro panguva yewelding, iyo inogona kuderedza kupisa kwepamusoro kwedziva rakanyungudutswa uye kuwedzera kushushikana kwepamusoro kwedziva rakanyungudutswa; TIG iri nyore kushanda, iri nyore kuona mamiriro edziva rakanyungudutswa, dense welds, yakanaka mechanical zvivakwa, uye yakanaka kuumbwa kwepasi. Parizvino, TIG inoshandiswa zvakanyanya mumaindasitiri akasiyana-siyana, kunyanya mukupisa kwesimbi isina tsvina mahwendefa matete.
1. Unyanzvi hunokosha hwe tungsten inert gas welding
1.1 Kusarudzwa kwe tungsten inert gasi welding muchina uye simba polarity
TIG inogona kukamurwa kuita DC uye AC pulses. DC pulse TIG inonyanya kushandiswa kugadzira simbi, simbi yakapfava, simbi isingadziviriri kupisa, nezvimwewo, uye AC pulse TIG inonyanya kushandiswa kugadzira simbi dzakareruka dzakadai sealuminium, magnesium, mhangura uye alloys ayo. Ose ari maviri AC uye DC pulses anoshandisa anodonha anodonha maitiro emagetsi emagetsi. TIG welding yesimbi isina tsvina mahwendefa matete kazhinji inoshandisa DC yakanaka yekubatanidza.
1.2 Unyanzvi hwakakosha hwechinyorwa tungsten inert gasi welding
1.2.1 Arc kutanga
Arc kutanga ine mafomu maviri: isiri-yekubata uye yekubata pfupi-circuit arc kutanga. Yekutanga haina kuonana pakati pe electrode uye workpiece, iyo yakakodzera kune ese DC uye AC welding, nepo yekupedzisira yakakodzera chete DC welding. Kana iyo pfupi-yedunhu nzira yakashandiswa kutanga arc, iyo arc haifanirwe kutangwa zvakananga pane weldment, nekuti zviri nyore kugadzira tungsten clamping kana kunamatira neworkpiece, iyo arc haigone kugadzikana nekukurumidza, uye arc iri nyore. kupaza zvinhu zvevabereki. Naizvozvo, arc yekutanga ndiro inofanira kushandiswa. Indiro yemhangura inofanira kuiswa pedyo nearc kutanga. Iyo arc inofanira kutangwa pairi kutanga, uye ipapo musoro we tungsten electrode unofanirwa kupisa kune imwe tembiricha usati waenda kune chikamu chinosungirirwa. Mukugadzirwa chaiko, TIG inowanzoshandisa arc starter kutanga arc. Pasi pekuita kwe-high-frequency current kana high-voltage pulse current, iyo argon gasi inonzi ionized uye arc inotanga.
1.2.2 Positioning welding
Panguva yekumisikidza welding, waya yewelding inofanirwa kuve yakatetepa kupfuura inowanzoshandiswa welding waya. Nekuda kwekuti tembiricha yakadzikira uye kutonhora kunokurumidza panguva yewelding, iyo arc inogara kwenguva yakareba, saka zviri nyore kupisa. Paunenge uchigadzira nzvimbo yakamisikidzwa welding, waya yewelding inofanirwa kuiswa panzvimbo yewelding chikamu, uye arc inofanirwa kutamirwa kune welding waya mushure mekunge yagadzikana. Mushure mekunge waya welding yanyunguduka uye fuses nemidziyo yevabereki kumativi ese, arc inokurumidza kumiswa.
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1.2.3 Normal welding
Kana TIG yakajairwa ichishandiswa kustainless simbi sheet welding, ikozvino inotorwa sediki kukosha. Nekudaro, kana yazvino iri isingasviki 20A, arc drift iri nyore kuitika, uye tembiricha ye cathode yakakwira zvakanyanya, izvo zvinokonzeresa kupisa nekupisa munzvimbo yewelding uye kushatisa mamiriro ekuburitsa maelectron, zvichiita kuti nzvimbo ye cathode irambe ichisvetuka. , zvichiita kuti zvive zvakaoma kuchengetedza welding yakajairika. Kana pulse TIG ikashandiswa, iyo peak ikozvino inogona kuita kuti arc igadzikane uye kuve neyakanaka kutungamira, zvichiita kuti zvive nyore kunyungudutsa zvinhu zvemubereki nekuigadzira, uye kuchinjika kutenderera kuti ive nechokwadi chekufambira mberi kweiyo welding process, kuitira kuti uwane weld. nekuita kwakanaka, kutaridzika kwakanaka, uye nemadziva akanyunguduka akaputirana.
2. Weldability kuongororwa kwesimbi isina tsvina sheet
Zvimiro zvemuviri uye chimiro cheplate yesimbi isina tsvina pepa inobata zvakananga kunaka kweweld. Stainless simbi sheet ine diki yekupisa conductivity uye yakakura mutsara wekuwedzera coefficient. Kana tembiricha yewelding ichichinja nekukurumidza, kushushikana kwekushisa kunogadzirwa kwakakura, uye zviri nyore kupisa kuburikidza, undercut uye wave deformation. Stainless simbi sheet welding inowanzo tora flat plate butt welding. Dziva rakanyungudutswa rinonyanya kukanganiswa nearc force, kusimba kwesimbi yedziva yakanyungudutswa uye kudhonzwana kwepamusoro kwesimbi yedziva yakanyungudutswa. Kana vhoriyamu, huremu uye hupamhi hwakanyungudutswa hwesimbi yedziva yakanyungudutswa isingachinji, kudzika kwedziva rakanyungudutswa kunoenderana nehukuru hwearc. Iyo yakanyungudutswa yakadzika uye arc simba ine hukama neiyo welding ikozvino, uye iyo yakanyungudutswa hupamhi inotarwa neiyo arc voltage.
Iyo yakakura vhoriyamu yedziva yakanyungudutswa, ndipo panobva panyanya kudzvanya kwepamusoro. Kana kudhonzwana kwepamusoro kusingakwanise kudzikamisa simba rearc uye kusimba kwesimbi yedhamu yakanyungudutswa, zvinokonzeresa kuti dziva rakanyungudutswa ripise. Mukuwedzera, iyo weldment ichave ichipisa uye yakanyoroveswa mukati meiyo welding process, zvichikonzera kusagadzikana kusagadzikana uye kunetseka. Kana iyo longitudinal kupfupisa weld inoburitsa kushushikana pamucheto wendiro yakatetepa iyo inodarika imwe kukosha, inoburitsa yakanyanya kukomba mafungu deformation, inokanganisa kutaridzika kwemhando yebasa. Pasi peiyo nzira yewelding uye maparamendi ekugadzirisa, kushandisa tungsten maelectrodes emhando dzakasiyana kudzikisa kupisa kupinza pajoinhi yewelding inogona kugadzirisa matambudziko akadai seweld burn-through uye workpiece deformation.
3. Kushandiswa kwemanyorero tungsten inert gasi welding mustainless steel sheet welding
3.1 Welding musimboti
Tungsten inert gasi welding ndeye yakavhurika arc welding ine yakagadzikana arc uye yakanyanya kupisa. Pasi pekuchengetedzwa kwegasi inert (argon), dziva rekuputira rakachena uye weld mhando yakanaka. Nekudaro, kana welding simbi isina tsvina, kunyanya austenitic Stainless simbi, kumashure kweiyo weld inodawo kuchengetedzwa, zvikasadaro zvinokonzeresa oxidation yakakomba, inokanganisa kuumbwa kweweld uye kuita welding.
3.2 Welding maitiro
Iyo welding yeStainless simbi sheet ine zvinotevera maitiro:
1) Iyo yekupisa conductivity yestainless simbi sheet haina kunaka uye iri nyore kupisa kuburikidza zvakananga.
2) Hapana waya welding inodiwa panguva yewelding, uye zvinhu zvemubereki zvinosanganiswa zvakananga.
Naizvozvo, kunaka kwesimbi isina simbi sheet welding inowirirana zvakanyanya nezvinhu zvakaita sevashandi, midziyo, zvinhu, nzira dzekuvaka, nharaunda yekunze panguva yekushongedza uye kuona.
Mukugadzira pepa resimbi isina tsvina, zvinhu zvekushongedza hazvidiwi, asi zvinhu zvinotevera zvinodiwa kuti zvive zvakakwirira: Kutanga, kuchena, kuyerera uye nguva yekuyerera kweargon gasi, uye yechipiri, tungsten electrode.
1) Argon
Argon igasi inert uye haisi nyore kuita nezvimwe zvinhu zvesimbi uye magasi. Nekuti kuyerera kwayo gasi kune inotonhora mhedzisiro, kupisa kunokanganisa nzvimbo ye weld idiki, uye deformation ye weld idiki. Ndiyo yakanyanya kunaka kudzivirira gasi kune tungsten inert gasi arc welding. Kuchena kwe argon kunofanira kunge kwakakura kupfuura 99.99%. Argon inonyanya kushandiswa kuchengetedza dziva rakanyungudutswa zvinobudirira, kudzivirira mhepo kubva pakunyungudusa dziva uye kukonzera oxidation panguva yewelding, uye zvinobudirira kuparadzanisa weld nzvimbo kubva kumhepo, kuitira kuti weld nzvimbo inodzivirirwa uye nekuita welding inovandudzwa.
2) Tungsten electrode
Iyo yepamusoro ye tungsten electrode inofanira kunge yakatsetseka, kuguma kunofanira kurodzwa, uye concentricity yakanaka. Nenzira iyi, iyo yakakwirira-frequency arc yakanaka, kugadzikana kwearc kwakanaka, kunyunguduka kwakadzika kwakadzika, dziva rakanyungudutswa rinogona kuramba rakagadzikana, weld yakaumbwa zvakanaka, uye kunaka kwewelding kwakanaka. Kana iyo yepamusoro ye tungsten electrode yakatsva kana pane kukanganisa kwakadai sekusvibisa, kuputika, shrinkage maburi, nezvimwewo pamusoro, high-frequency arc yakaoma kutanga panguva yekuputika, arc haina kugadzikana, iyo arc ine drift, the dziva rakanyungudutswa rakaparadzirwa, pamusoro pacho pakawedzerwa, kunyungudika kwakadzika hakuna kudzika, weld haina kuumbwa zvakanaka, uye mhando yewelding haina kunaka.
4. Mhedziso
1) Tungsten inert gasi arc welding ine kugadzikana kwakanaka, uye akasiyana tungsten electrode maumbirwo ane pesvedzero huru pamhando yewelding yesimbi isina tsvina mahwendefa matete.
2) Flat-top cone-end tungsten inert electrode welding inogona kuvandudza kaviri-sided kuumba mwero we-single-sided welding, kuderedza kupisa kwekupisa kwakakanganisika nzvimbo, kuita weld kunaka, uye kuve neakanaka akazara ma mechanical.
3) Kushandisa nzira chaiyo yewelding kunogona kudzivirira zvinorema kukanganisa.
Nguva yekutumira: Aug-21-2024
