1. Chigadzirwa chakakosha
Kuti uderedze shanduko yeyakatarisana saizi yakakonzerwa nekushandurwa kwe pre focal beam size, mugadziri we laser yekucheka system anopa mamwe maturusi akakosha evashandisi kusarudza:
(1) Collimator.Iyi inzira yakajairika, kureva kuti, collimator inowedzerwa kumagumo ekubuda kweCO2 laser yekuwedzera kugadzirisa.Mushure mekuwedzera, iyo dhayamita dhayamita inova yakakura uye iyo divergence angle inova diki, kuitira kuti saizi yedanda isati yasvika kumagumo uye kure kumagumo kutarisisa kuri pedyo nekufanana mukati mekucheka kwekushanda.
(2) Iyo yakazvimiririra yakadzika axis yeinofamba lens inowedzerwa kumusoro wekucheka, ayo ari maviri akazvimirira mativi ane Z axis inodzora chinhambwe pakati pemhino nechinhu chepamusoro.Kana iyo yekushanda yemuchina wekushandisa inofamba kana iyo optical axis inofamba, iyo F-axis yedanda inofamba kubva kumucheto kusvika kumagumo panguva imwe chete, kuitira kuti dhayamita yenzvimbo irambe yakafanana munzvimbo yese yekugadzirisa mushure danda rakatariswa.
(3) Dzora kudzvinyirirwa kwemvura kwekutarisa lens (kazhinji simbi inoratidzira inotarisisa system).Kana saizi yedanda risati ratarisa rikaita diki uye dhayamita yenzvimbo yakatariswa ikava yakakura, dzvinyiriro yemvura inodzorwa otomatiki kushandura curvature yakatarisa kuderedza dhayamita yenzvimbo yakatarisa.
(4) Iyo yekubhadhara optical nzira system muX uye Y nzira inowedzerwa kune inobhururuka yekucheka nzira yekucheka muchina.Iko ndiko, apo nzira yemaziso yekuguma kwekupedzisira kwekucheka kunowedzera, muripo we optical nzira inopfupiswa;Pane zvinopesana, kana nzira yemaziso iri pedyo nekuguma kwekucheka yakaderedzwa, nzira yekubhadhara maziso inowedzerwa kuti ichengetedze hurefu hwehurefu hunoenderana.
2. Kucheka uye perforation teknolojia
Chero mhando yetekinoroji yekucheka tekinoroji, kunze kwemakesi mashoma anogona kutanga kubva kumucheto kweplate, kazhinji kagomba kadiki kanofanirwa kucherwa pandiro.Kare, muchina welaser stamping compound muchina, gomba rakabayiwa nechibhakera, ndokuzocheka kubva mugomba diki nelaser.Kune michina yekucheka laser isina chidhindo mudziyo, pane nzira mbiri dzekutanga dzekuboora:
(1) Blast drilling: mushure mekunge zvinhu zvatungidzwa nelaser inoenderera, gomba rinoumbwa pakati, uye ipapo zvinhu zvakanyungudutswa zvinokurumidza kubviswa neokisijeni inoyerera coaxial nelaser beam kuita gomba.Kazhinji, ukuru hwegomba hunoenderana nekukora kweplate.Avhareji yedhayamita yegomba rinoputika ihafu yehupamhi hweplate.Naizvozvo, gomba rinoputika dhayamita rendiro yakakora yakakura uye haina kutenderera.Izvo hazvina kukodzera kushandiswa pazvikamu zvine zvinodiwa zvepamusoro (semafuta skrini seam pipe), asi pamarara chete.Pamusoro pezvo, nekuti mweya weokisijeni unoshandiswa pakuboora wakafanana neunoshandiswa kucheka, kupfachuka kwakakura.
Pamusoro pezvo, pulse perforation inodawo yakavimbika gasi nzira yekudzora nzira yekuona shanduko yerudzi rwegasi uye kudzvanywa kwegasi uye kutonga kwenguva yekupwanya.Kana iri pulse perforation, kuti uwane yakakwirira-yemhando incision, tekinoroji yekushandura kubva kupuruzira perforation kana workpiece yakamira kuti irambe ichimhanya inoenderera kuchekwa kweworkpiece inofanirwa kutariswa.Nechepfungwa, mamiriro ekucheka echikamu chekumhanyisa anogona kazhinji kuchinjwa, senge yakatarisana kureba, nzvimbo yemuromo, gasi kudzvanywa, nezvimwewo, asi muchokwadi, hazvigoneke kushandura mamiriro ari pamusoro nekuda kwenguva pfupi.
3. Nozzle design uye air flow control tekinoroji
Kana laser yekucheka simbi, okisijeni uye yakatarisana nelaser danda inopfurwa kune yakachekwa zvinhu kuburikidza nemhuno, kuitira kuti igadzire danda rekuyerera kwemhepo.Chinodiwa chikuru chekuyerera kwemhepo ndechekuti mhepo inoyerera ichipinda mukuchekwa inofanira kunge yakakura uye kumhanya kunofanirwa kunge kwakakwira, kuitira kuti oxidation yakakwana iite kuti incision material iite exothermic reaction zvizere;Panguva imwecheteyo, kune simba rakakwana rekupfapfaidza nekuputira zvinhu zvakanyungudutswa.Naizvozvo, mukuwedzera kune kunaka kwedanda uye kutonga kwayo kunobata zvakananga kunaka kwekucheka, dhizaini yemuromo uye kutonga kwekuyerera kwemhepo (yakadai sekumanikidza kwenozzle, chinzvimbo cheworkpiece mukuyerera kwemhepo, nezvimwe. ) zvinhu zvinokoshawo zvikuru.Iyo muromo yekucheka laser inotora chimiro chakareruka, ndiko kuti, gomba rekoni rine diki denderedzwa gomba kumagumo.Kuedza uye kukanganisa nzira dzinowanzo shandiswa pakugadzira.
Nekuti iyo nozzle inowanzo gadzirwa nemhangura tsvuku uye ine vhoriyamu diki, inhengo isina njodzi uye inoda kutsiviwa kazhinji, saka hydrodynamic kuverenga uye kuongororwa hazviitwe.Kana iri kushandiswa, gasi rine imwe dzvinyiriro PN (gauge pressure PG) inounzwa kubva padivi penozzle, iyo inonzi iyo nozzle pressure.Inobudiswa kubva mumuromo wemuromo uye inosvika panzvimbo yebasa kuburikidza neimwe chinhambwe.Kudzvanywa kwayo kunonzi kucheka kudzvanywa PC, uye pakupedzisira gasi rinowedzera kusvika kumhepo yemhepo PA.Basa rekutsvagisa rinoratidza kuti nekuwedzera kwePN, kuyerera kwevelocity kunowedzera uye PC inowedzerawo.
Iyi inotevera formula inogona kushandiswa kuverenga: v = 8.2d2 (PG + 1) V - gasi kuyerera mwero L / pfungwa - nozzle dhayamita MMPg - nozzle pressure (gauge pressure) bar
Kune zvakasiyana-siyana zvekumanikidza magasi akasiyana.Kana kudzvanywa kwenozzle kuchipfuura kukosha uku, kuyerera kwegasi ndeye yakajairwa oblique shock wave, uye gasi rinoyerera velocity rinopfuura kubva subsonic kuenda supersonic.Ichi chikumbaridzo chine hukama nereshiyo yePN nePA uye chiyero cherusununguko (n) yemamorekuru egasi: semuenzaniso, n = 5 yeokisijeni nemhepo, saka chikumbaridzo chayo PN = 1bar × (1.2)3.5=1.89bar. iyo nozzle pressure yakakwira, PN / PA = (1 + 1 / N) 1 + n / 2 (PN; 4bar), kuyerera kwemhepo kwakajairwa, iyo oblique yekuvhundutsa chisimbiso inova kuvhunduka kwakanaka, kucheka kudzvinyirira PC kunoderera, mweya. kumhanya kwekuyerera kunoderera, uye eddy mafungu anoumbwa pane workpiece pamusoro, izvo zvinonetesa basa rekuyerera kwemhepo mukubvisa zvinhu zvakanyungudutswa uye zvinokanganisa kukurumidza kucheka.Naizvozvo, iyo muromo ine conical gomba uye diki denderedzwa gomba kumagumo inogamuchirwa, uye iyo nozzle pressure yeokisijeni kazhinji isingasviki 3bar.
Nguva yekutumira: Feb-26-2022
