Umthelela Wegesi Evikelayo ku-Laser Welding
Yini Engakutholela Igesi Evikela Okulungile?
In laser welding, ukukhethwa kwegesi yokuvikela kungaba nomthelela omkhulu ekwakhekeni, ikhwalithi, ukujula, kanye nobubanzi be-weld seam.
Ezimweni eziningi, ukwethulwa kwegesi evikelayo kunomphumela omuhle kumthungo we-weld ngenkathi ukusetshenziswa okungalungile kwegesi yokuvikela kungaba nemiphumela elimazayo ekushiseleni.
Imiphumela efanele nengalungile yokusebenzisa igesi evikelayo imi kanje:
Ukusetshenziswa Okufanelekile
Ukusetshenziswa Okungalungile
1. Ukuvikelwa Okuphumelelayo kwe-Weld Pool
Ukwethulwa ngendlela efanele kwegesi evikelayo kungavikela ngempumelelo i-weld pool ekufakweni kwe-oxidation noma kuvimbele ngisho ne-oxidation ngokuphelele.
1. Ukuwohloka kwe-Weld Seam
Ukwethulwa ngendlela engafanele kwegesi evikelayo kungase kubangele izinga eliphansi lomthungo we-weld.
2. Ukuncishiswa kokuFafaza
Ukwethula kahle igesi evikelayo kunganciphisa ngempumelelo ukuphalaza ngesikhathi senqubo yokushisela.
2. Ukuqhekeka Nokuncishiswa Kwezakhiwo Zemishini
Ukukhetha uhlobo lwegesi olungalungile kungaholela ekuqhekekeni kwe-weld seam kanye nokwehla kokusebenza kwemishini.
3. Ukwakhiwa Okufanayo kwe-Weld Seam
Ukwethulwa kahle kwegesi evikelayo kukhuthaza ukusabalala kwe-weld pool ngesikhathi sokuqina, okuholela kumthungo wokushisela omfaniswano nobuhle.
3. Ukwenyuka Kwe-Oxidation Noma Ukuphazamiseka
Ukukhetha izinga lokugeleza kwegesi okungalungile, noma ngabe liphezulu kakhulu noma liphansi kakhulu, kungaholela ekwandeni kwe-oxidation ye-weld seam. Kungase futhi kubangele ukuphazamiseka okukhulu kwensimbi encibilikisiwe, okuholela ekuweni noma ukwakheka okungalingani komthungo we-weld.
4. Ukwenyuka Kokusetshenziswa Kwe-Laser
Ukwethula kahle igesi eyisivikelo kunganciphisa ngempumelelo umthelela wokuvikela wensimbi yomusi noma amafu eplasma ku-laser, ngaleyo ndlela kwandise ukusebenza kahle kwelaser.
4. Ukuvikeleka Okungenele noma Umthelela Ongemuhle
Ukukhetha indlela engalungile yokwethulwa kwegesi kungaholela ekuvikelekeni okunganele kwe-weld seam noma kube nomthelela omubi ekwakhekeni kwe-weld seam.
5. Ukwehliswa kwe-Weld Porosity
Ukwethula kahle igesi evikelayo kunganciphisa ngempumelelo ukwakheka kwama-gas pores kumthungo we-weld. Ngokukhetha uhlobo olufanele lwegesi, izinga lokugeleza, kanye nendlela yesingeniso, imiphumela emihle ingafinyelelwa.
5. Ithonya Ekujuleni Kwe-Weld
Ukwethulwa kwegesi yokuvikela kungaba nomthelela othile ekujuleni kwe-weld, ikakhulukazi ekushiseni kwepuleti elincane, lapho kuvame ukunciphisa ukujula kwe-weld.
Izinhlobo Ezihlukahlukene Zegesi Evikelayo
Amagesi avikelayo asetshenziswa kakhulu ekushiseleni nge-laser yi-nitrogen (N2), i-argon (Ar), ne-helium (He). Lawa magesi anezakhiwo ezihlukene zomzimba namakhemikhali, okuholela emiphumeleni ehlukahlukene kumthungo we-weld.
1. I-nitrogen (N2)
I-N2 inamandla e-ionization amaphakathi, aphezulu kune-Ar futhi aphansi kuno-He. Ngaphansi kwesenzo se-laser, i-ionize ngezinga elilinganiselwe, inciphisa ngempumelelo ukwakheka kwamafu e-plasma futhi ikhulise ukusetshenziswa kwe-laser. Nokho, i-nitrogen ingasabela ngamakhemikhali nama-alloys e-aluminium nensimbi ye-carbon emazingeni okushisa athile, yakhe ama-nitride. Lokhu kungandisa i-brittleness futhi kunciphise ukuqina kwe-weld seam, kuthinte kabi izakhiwo zayo zemishini. Ngakho-ke, ukusetshenziswa kwe-nitrogen njengegesi evikelayo yama-alloys e-aluminium kanye ne-carbon steel welds akukhuthazwa. Ngakolunye uhlangothi, i-nitrogen ingasabela ngensimbi engagqwali, yakhe ama-nitride athuthukisa ukuqina kwelunga lokushisela. Ngakho-ke, i-nitrogen ingasetshenziswa njengegesi evikelayo yokushisela insimbi engagqwali.
2. I-Argon Gas (Ar)
Igesi ye-Argon inamandla aphansi kakhulu e-ionization, okuholela ezingeni eliphakeme le-ionization ngaphansi kwesenzo se-laser. Lokhu akulungile ekulawuleni ukwakheka kwamafu e-plasma futhi kungaba nomthelela othile ekusetshenzisweni ngempumelelo kwama-lasers. Kodwa-ke, i-argon ine-reactivity ephansi kakhulu futhi cishe ayinakwenzeka ukusabela kwamakhemikhali ngezinsimbi ezivamile. Ukwengeza, i-argon iyabiza. Ngaphezu kwalokho, ngenxa yokuminyana kwayo okuphezulu, i-argon izika ngaphezu kwechibi lokushisela, ihlinzeka ngokuvikeleka okungcono kwe-weld pool. Ngakho-ke, ingasetshenziswa njengegesi evamile yokuvikela.
3. Igesi ye-Helium (Yena)
Igesi ye-Helium inamandla aphezulu kakhulu e-ionization, okuholela ezingeni eliphansi kakhulu le-ionization ngaphansi kwesenzo se-laser. Ivumela ukulawulwa okungcono kokwakheka kwamafu e-plasma, futhi ama-lasers angakwazi ukusebenzisana ngokuphumelelayo nezinsimbi. Ngaphezu kwalokho, i-helium inokusebenza kabusha okuphansi kakhulu futhi ayisheshi ukusabela kwamakhemikhali ngezinsimbi, okuyenza ibe igesi ekahle kakhulu yokuvikela i-weld. Kodwa-ke, izindleko ze-helium ziphezulu, ngakho-ke ngokuvamile azisetshenziselwa ukukhiqizwa kwemikhiqizo eminingi. Ivamise ukusetshenziswa ocwaningweni lwesayensi noma emikhiqizweni enenani eliphezulu.
Izindlela Ezimbili Zokusebenzisa Igesi Evikelayo
Njengamanje, kunezindlela ezimbili eziyinhloko zokwethula igesi evikelayo: ukuvunguza ohlangothini lwe-off-axis kanye negesi yokuvikela i-coaxial, njengoba kukhonjisiwe kuMfanekiso 1 kanye noMfanekiso 2, ngokulandelana.
Umfanekiso 1: I-off-axis Side Side Blowing Shielding Gas
Umfanekiso 2: I-Coaxial Shielding Gas
Ukukhetha phakathi kwezindlela ezimbili zokufutha kuncike ekucabangeni okuhlukahlukene.
Ngokuvamile, kunconywa ukusebenzisa indlela yokuvuthela eseceleni kwe-off-axis ukuvikela igesi.
Indlela Yokukhetha Igesi Evikelayo Efanelekile?
Okokuqala, kubalulekile ukucacisa ukuthi igama elithi "oxidation" lama-welds liyinkulumo ehlangene. Ngokombono, kubhekiselwa ekuwohlokeni kwekhwalithi yokushisela ngenxa yokusabela kwamakhemikhali phakathi kwensimbi yokushisela nezinto eziyingozi ezisemoyeni, njengomoya-mpilo, i-nitrogen, ne-hydrogen.
Ukuvimbela i-weld oxidation kuhilela ukunciphisa noma ukugwema ukuthintana phakathi kwalezi zingxenye eziyingozi kanye nensimbi enezinga eliphezulu lokushisa. Lesi simo sezinga lokushisa eliphezulu asihlanganisi nje kuphela insimbi ye-weld pool encibilikisiwe kodwa futhi sonke isikhathi kusukela lapho insimbi yokushisela incibilika kuze kube yilapho ichibi liqina futhi izinga lokushisa lincipha ngaphansi komkhawulo othile.
Inqubo yokushisela
Isibonelo, ekushiseni ama-titanium alloys, lapho izinga lokushisa lingaphezu kuka-300 ° C, ukumuncwa kwe-hydrogen ngokushesha kwenzeka; ngaphezu kwe-450 ° C, ukumuncwa kwe-oxygen ngokushesha kwenzeka; futhi ngaphezu kuka-600 ° C, ukumuncwa kwe-nitrogen ngokushesha kwenzeka.
Ngakho-ke, ukuvikela okusebenzayo kuyadingeka ukuze kushiselwe i-titanium alloy ngesikhathi sesigaba lapho iqina futhi izinga lokushisa layo lehla ngaphansi kuka-300 ° C ukuvimbela i-oxidation. Ngokusekelwe encazelweni engenhla, kuyacaca ukuthi igesi evikelayo ephephethwayo idinga ukuhlinzeka ngokuvikeleka hhayi kuphela echibini lokushisela ngesikhathi esifanele kodwa nasesifundeni esivele siqinile se-weld. Ngakho-ke, indlela yokuvuthela eseceleni ye-off-axis ekhonjiswe kuMfanekiso 1 ngokuvamile iyathandwa ngoba inikeza ububanzi obubanzi bokuvikela uma kuqhathaniswa nendlela yokuvikela i-coaxial eboniswe kuMfanekiso 2, ikakhulukazi endaweni esanda kuqiniswa ye-weld.
Kodwa-ke, emikhiqizweni ethile ethile, ukukhetha indlela kufanele kwenziwe ngokusekelwe esakhiweni somkhiqizo kanye nokucushwa okuhlangene.
Ukukhetha Okuqondile Kwendlela Yokwethula Igesi Evikelayo
1. I-Straight-line Weld
Uma umumo wokushisela womkhiqizo uqondile, njengoba kukhonjisiwe kuMfanekiso 3, futhi ukucushwa okuhlanganyelwe kuhlanganisa amalunga ezinqe, ama-lap joints, ama-fillet weld, noma ama-stack weld, indlela ekhethwayo yalolu hlobo lomkhiqizo yindlela yokuvuthela eseceleni ye-off-axis eboniswe kuMfanekiso 1.
Umfanekiso 3: I-Straight-line Weld
2. Planar Enclosed Geometry Weld
Njengoba kuboniswe kuMfanekiso 4, i-weld kulolu hlobo lomkhiqizo inomumo ovaliwe we-planar, njengesiyingi, i-polygonal, noma umumo womugqa wezingxenye eziningi. Ukucushwa okuhlanganyelwe kungabandakanya amalunga ezinqe, ama-lap joints, noma ama-weld we-stack. Kulolu hlobo lomkhiqizo, indlela ekhethwayo ukusebenzisa igesi evikela i-coaxial eboniswe kuMfanekiso 2.
Umfanekiso 4: I-Planar Efakwe I-Geometry Weld
Ukukhethwa kwegesi yokuvikela ye-planar jeometry welds evalekile kuthinta ngqo ikhwalithi, ukusebenza kahle, kanye nezindleko zokukhiqiza ukushisela. Kodwa-ke, ngenxa yokwehlukahlukana kwezinto zokushisela, ukukhethwa kwegesi yokushisela kuyinkimbinkimbi ezinqubweni zangempela zokushisela. Kudinga ukucatshangelwa okuphelele kwezinto zokushisela, izindlela zokushisela, izikhundla zokushisela, kanye nomphumela we-welding oyifunayo. Ukukhethwa kwegesi yokushisela efaneleka kakhulu kunganqunywa ngokuhlolwa kokushisela ukuze kuzuzwe imiphumela emihle yokushisela.
Isibonisi Sevidiyo | Glance for Handheld Laser Welding
Yazi Kabanzi mayelana nokuthi Iyini I-Handheld Laser Welder
Le vidiyo ichaza ukuthi uyini umshini we-laser welding kanye neimiyalelo nezakhiwo odinga ukuzazi.
Lona futhi umhlahlandlela wakho omkhulu ngaphambi kokuthenga i-laser welder ephathwayo.
Kukhona ukuqanjwa okuyisisekelo kwe-1000W 1500w 2000w Laser Welding Machine.
I-Versatile Laser Welding yezidingo ezahlukahlukene
Kule vidiyo, sibonisa izindlela zokushisela ezimbalwa ongazifinyelela nge-laser welder ephathwayo. I-laser welder ephathwa ngesandla ingaba nenkundla yokudlala phakathi kwe-welding rookie kanye no-opharetha womshini wokushisela osemnkantshubomvu.
Sinikeza izinketho kusuka ku-500w yonke indlela ukuya ku-3000w.
Kunconywa Ukushisela I-Laser Ephathwayo Ephathwayo
Imibuzo Evame Ukubuzwa
- Ku-laser welding, igesi yokuvikela iyingxenye ebalulekile esetshenziselwa ukuvikela indawo yokushisela ekungcoleni komoya. I-laser enamandla kakhulu esetshenziswa kulolu hlobo lokushisela ikhiqiza inani elikhulu lokushisa, idale ichibi lensimbi elincibilikisiwe.
Igesi ye-inert ivame ukusetshenziselwa ukuvikela ichibi elincibilikisiwe ngesikhathi senqubo yokushisela yemishini yokushisela ye-laser. Lapho ezinye izinto zishiselwé, i-oxidation yendawo ingase ingacatshangelwa. Kodwa-ke, ekusetshenzisweni okuningi, i-helium, i-argon, i-nitrogen, namanye amagesi avame ukusetshenziswa njengesivikelo. Okulandelayo Ake sibheke ukuthi kungani imishini yokushisela i-laser idinga igesi yokuvikela lapho ishisela.
Ku-laser welding, igesi evikelayo izothinta ukwakheka kwe-weld, ikhwalithi ye-weld, ukungena kwe-weld, nobubanzi bokuhlanganisa. Ezimweni eziningi, ukufutha igesi evikelayo kuzoba nomthelela omuhle ku-weld.
- Izingxube ze-Argon-HeliumIzingxube ze-Argon-Helium: ngokuvamile zinconyelwa ezinhlelweni eziningi zokushisela i-aluminium laser kuya ngezinga lamandla e-laser. Izingxube ze-Argon-Oxygen: zinganikeza ukusebenza kahle okuphezulu kanye nekhwalithi eyamukelekayo yokushisela.
- Amagesi asetshenziswa ekwakhiweni nasekusetshenzisweni kwamalaser egesi yilawa alandelayo: i-carbon dioxide (CO2), i-helium-neon (H ne-Ne), ne-nitrogen (N).
Noma yimiphi imibuzo mayelana ne-Handheld Laser Welding?
Isikhathi sokuthumela: May-19-2023