Kupinza neLaser kwakanangana zvikuru nekuvandudza mashandiro ekupinza nekuvandudza kunaka kwezvinhu zvakapfava pamadziro uye zvikamu zvakanyatsonaka. Nhasi hatisi kuzotaura nezvemabhenefiti ekupinza neLaser asi tichatarisa mashandisirwo emagasi ekudzivirira pakupinza neLaser nemazvo.
Sei uchishandisa gasi rekudzivirira pakushongedza ne laser?
Mukusanganisa nelaser, gasi rekudzivirira rinokanganisa kugadzirwa kweweld, kunaka kweweld, kudzika kweweld, uye hupamhi hweweld. Kazhinji, kufefetera gasi rinobatsirwa kunobatsira pakusanganisa, asi zvinogonawo kuunza migumisiro yakaipa.
Kana ukafuridza gasi rekudzivirira nemazvo, richakubatsira:
✦Chengetedza dziva re weld zvinobudirira kuderedza kana kutodzivirira oxidation
✦Kuderedza zvinobudirira kupararira kwemvura inobuda panguva yekunamira
✦Zvinobudirira kuderedza weld pores
✦Batsira dziva rekuwelda kupararira zvakaenzana kana raoma, kuitira kuti musono wekuwelda uve nemupendero wakachena uye wakatsetseka.
✦Kudzivirira kwesimbi vapor plume kana plasma cloud pa laser kunoderedzwa zvinobudirira, uye mwero wekushandiswa zvinobudirira kwe laser unowedzerwa.
Chero bedzirudzi rwegasi rekudzivirira, mwero wekuyerera kwegasi, uye sarudzo yemhando yekuvhuvhutaKana zvanyatsojeka, unogona kuwana mhedzisiro yakanaka yekuwelda. Zvisinei, kushandiswa zvisina kunaka kwegasi rinodzivirira kunogonawo kukanganisa kuwelda. Kushandisa gasi rinodzivirira zvisina kunaka kunogona kukonzera kurira kweweld kana kuderedza hunhu hwemuchina wekuwelda. Kuyerera kwegasi kwakanyanya kana kwakaderera kunogona kukonzera kuoxidation kwakanyanya kweweld uye kupindira kwakanyanya kwesimbi iri mukati medziva rekuwelda, zvichikonzera kudonha kweweld kana kusaumbwa zvakanaka.
Mhando dzegasi rekudzivirira
Magasi anodzivirira anoshandiswa zvakanyanya pakuwelda nelaser anonyanya kushandiswa ndeaya: N2, Ar, naHe. Hunhu hwavo hwepanyama nehwemakemikari hwakasiyana, saka mhedzisiro yavo pawelds yakasiyanawo.
Nitrogen (N2)
Simba reN2 reionization riri pakati nepakati, rakakwirira kupfuura reAr, uye rakaderera pane reHe. Pasi pemwaranzi yelaser, ionization degree yeN2 inoramba iri pachiyero chakaenzana, izvo zvinogona kuderedza kuumbwa kwegore replasma uye kuwedzera mwero wekushandiswa kwakanaka kwelaser. Nitrogen inogona kuita nealuminium alloy necarbon steel patembiricha yakati kuti igadzire nitrides, izvo zvichavandudza weld brittleness uye kuderedza kuoma, uye zvine mhedzisiro yakaipa pahunhu hwemakanika eweld joints. Saka, hazvikurudzirwi kushandisa nitrogen pakusanganisa aluminum alloy necarbon steel.
Zvisinei, maitiro emakemikari pakati penitrogen nesimbi isingatsvi inogadzirwa nenitrogen anogona kuwedzera simba rejoini yeweld, izvo zvichabatsira kuvandudza hunhu hweweld, saka welding yesimbi isingatsvi inogona kushandisa nitrogen segasi rekudzivirira.
Argon (Ar)
Simba reArgon reionization rakaderera, uye mwero waro weionization uchakwira kana richishandiswa nelaser. Zvadaro, Argon, segasi rinochengetedza, haigoni kudzora kuumbwa kwemakore eplasma zvinobudirira, izvo zvinoderedza mwero wekushandiswa kwakanaka kwelaser welding. Mubvunzo unomuka: argon isarudzo yakaipa here yekushandisa welding segasi rinochengetedza? Mhinduro ndeiyi Kwete. Sezvo iri gasi risina simba, Argon yakaoma kuita nesimbi zhinji, uye Ar haina kudhura kushandisa. Pamusoro pezvo, density yeAr yakakura, ichaita kuti inyure pamusoro pedziva rakanyungudutswa reweld uye inogona kuchengetedza zviri nani dziva reweld, saka Argon inogona kushandiswa segasi rinodzivirira renguva dzose.
Helium (Iye)
Kusiyana neArgon, Helium ine simba re ionization rakawanda rinogona kudzora kuumbwa kwemakore eplasma zviri nyore. Panguva imwe chete, Helium haishande nesimbi chero ipi zvayo. Isarudzo yakanaka kwazvo ye laser welding. Dambudziko chete nderekuti Helium inodhura zvishoma. Kune vagadziri vanopa zvigadzirwa zvesimbi zvinogadzirwa zvakawanda, helium inowedzera mari yakawanda pamutengo wekugadzira. Saka helium inowanzo shandiswa mukutsvagisa kwesainzi kana zvigadzirwa zvine kukosha kwakanyanya.
Nzira yekuputira gasi rekudzivirira?
Chekutanga, zvinofanira kujeka kuti chinonzi "oxidation" ye weld izita rinozivikanwa chete, iro rinoreva maitiro emakemikari ari pakati pe weld nezvinhu zvinokuvadza mumhepo, zvichikonzera kuora kwe weld. Kazhinji, weld metal inobatana ne oxygen, nitrogen, uye hydrogen mumhepo patembiricha yakati.
Kudzivirira weld kuti isa "oxidized" kunoda kuderedza kana kudzivirira kusangana pakati pezvinhu zvinokuvadza zvakadaro nesimbi ye weld pasi pekupisa kwakanyanya, izvo zvisiri musimbi yedziva yakanyungudutswa chete asi nguva yese kubva panguva iyo weld simbi inonyungudutswa kusvika simbi yedziva yakanyungudutswa yaoma uye tembiricha yayo yave kutonhora kusvika patembiricha yakati.
Nzira mbiri huru dzekufuridza gasi rekudzivirira
▶Imwe iri kuputira gasi rekudzivirira padivi, sezvakaratidzwa paMufananidzo 1.
▶Imwe nzira yekuvhuvhuta nemhepo inonzi coaxial blowing, sezvakaratidzwa paMufananidzo 2.
Mufananidzo 1.
Mufananidzo 2.
Sarudzo chaiyo yenzira mbiri dzekuputira inyaya yakazara yekufunga nezvezvinhu zvakawanda. Kazhinji, zvinokurudzirwa kushandisa nzira yegasi rinodzivirira rinoputira parutivi.
Mimwe mienzaniso yekushongedza ne laser
1. Kubatanidza bead/line striped bead/line
Sezvakaratidzwa paMufananidzo 3, chimiro cheweld chechigadzirwa chakanyatsorongeka, uye chimiro chejointi chinogona kunge chiri butt joint, lap joint, negative corner joint, kana overlapped welding joint. Pamhando iyi yechigadzirwa, zviri nani kushandisa side-axis blowing protective gas sezvakaratidzwa paMufananidzo 1.
2. Kubatanidza chidimbu chakavharika kana nzvimbo yacho
Sezvakaratidzwa paMufananidzo 4, chimiro cheweld chechigadzirwa chakavharwa senge denderedzwa replane, chimiro cheplane multilateral, chimiro cheplane multi-segment linear, nezvimwewo. Chimiro chejointi chinogona kunge chiri butt joint, lap joint, overlapping welding, nezvimwewo. Zviri nani kushandisa nzira ye coaxial protective gas sezvakaratidzwa paMufananidzo 2 kune rudzi urwu rwechigadzirwa.
Kusarudzwa kwegasi rinodzivirira kunokanganisa zvakananga kunaka kwewelding, kushanda zvakanaka, uye mutengo wekugadzira, asi nekuda kwekusiyana kwezvinhu zvewelding, mukuita kwewelding chaiko, kusarudzwa kwegasi rewelding kwakaoma uye kunoda kutariswa kwakazara kwezvinhu zvewelding, nzira yewelding, nzvimbo yewelding, pamwe nezvinodiwa zvewelding effect. Kuburikidza nemiedzo yewelding, unogona kusarudza gasi rewelding rakakodzera kuti uwane mhedzisiro iri nani.
Vanofarira kusanganisa simbi ne laser welding uye vanoda kudzidza kusarudza gasi rekudzivirira
Zvinongedzo Zvakafanana:
Nguva yekutumira: Gumiguru-10-2022