Izilungiselelo Zokushisela I-Aluminium Nge-Laser Ophathwa Ngesandla: Imiphumela Nezindlela Ezinhle

Umhlahlandlela osebenzayo wemiphumela yokushisela nge-laser ophathwa ngesandla kwe-aluminium, okuhlanganisa amandla, isivinini, ukudla ucingo, igesi evikelayo, ukususwa kwe-oxide, nokulawulwa kwe-porosity.

Umhlahlandlela Wezobuchwepheshe

Kungani Imingcele Yokushisela I-Aluminium Ibalulekile

I-Aluminium ingenye yezinto ezinselele kakhulu ekushiseleni nge-laser. Ukukhanya kwayo okuphezulu kubude begagasi le-fiber laser engu-1064 nm, ukushisa kwayo okuphindwe kane kunensimbi, nongqimba lwe-oxide olwakheka ngokwemvelo olunendawo yokuncibilika engaphezu kuka-2000 °C konke kudinga ukulawulwa okunembile kwemingcele. A umshini wokushisela nge-laser ophathwayo ingakhiqiza ama-weld e-aluminium amahle kakhulu - kodwa kuphela uma amandla, isivinini, ukondla ucingo, negesi yokuvikela kuhambisana kahle ne-alloy nokujiya okukhona.

Lo mhlahlandlela uhlanganisa imingcele eyinhloko okudingeka uyilungise ukuze uthole ama-weld e-aluminium angaguquki, angena-porosity, ngamanani athile ereferensi emishinini yokushisela nge-laser ephathwayo engu-1000 W kuya ku-3000 W ohlwini lwethu lomkhiqizo. Ukuze uthole umhlahlandlela obanzi wokukhetha umshini wokushisela nge-laser ophathwayo we-aluminium, bheka isihloko esihambisanayo sethu.

Imingcele Eyinhloko Yokushisela I-Aluminium Nge-Laser

Amandla e-Laser

Ukukhetha amandla kuncike kakhulu ekujijeni kwezinto nohlobo lwejoyinti. Kuma-alloy e-aluminium, imodeli engu-1500 W ifinyelela ukungena okuphezulu kuka-3 mm ekudlulisweni okukodwa. Izingxenye ezijiyile zidinga amamodeli angu-2000 W noma angu-3000 W. Ukusebenzisa amandla amaningi ku-aluminium encane kubangela ukushiswa nokuncipha; amandla amancane kakhulu abangela ukungahlangani kahle.

Ukujiya Kwezinto	Amandla Anconyiwe	Imodeli
0.5–1.0 mm	600–900 W	1000 W
1.0–2.0 mm	900–1300 W	1500 W
2.0–3.0 mm	1300–1500 W	1500 W / 2000 W
3.0–4.0 mm	1800–2200 W	2000 W / 3000 W
4.0 mm+	2500–3000 W	3000 W

Iphuzu elibalulekile: I-Aluminium ikhombisa kuze kufike ku-90% wamandla e-fiber laser afikayo ekushiseni kwegumbi. Uma into ifinyelela endaweni yokuncibilika, ukumunca kukhuphuka kakhulu. Lokhu kusho ukuthi imizuzwana yokuqala yomgogodla ngamunye we-weld ibalulekile - amandla aphakeme anganele angabangela ukuthi umsebe ubonakale kunokuba ungene, okuholela ekuqaleni kwe-weld okungaguquki.

Isivinini Sokushisela

Isivinini sokuhamba sithinta ngqo ukufudumala okungenayo ngeyunithi yobude. Ku-aluminium, isivinini esisheshayo sinciphisa indawo ethintekile ukushisa (HAZ) futhi sinciphise ukuphambuka, kodwa ukushesha kakhulu kungabangela ukungahlangani kahle. Izinga elijwayelekile lesivinini:

Ishidi elincane (0.5–1.5 mm): 20–40 mm/s
Ipuleti eliphakathi (1.5–3.0 mm): 10–25 mm/s
Ipuleti elijiyile (3.0 mm+): 5–15 mm/s

Ubudlelwano bulula: ukwandisa amandla kuvumela isivinini esiphezulu ekujuleni okufanayo kokungena. Uhlelo lungagcina amaqembu angaphezu kuka-50 wemiphumela yokushisela, ngakho uma uthola inhlanganisela ekahle yamandla nesivinini sensimbi ethile nokujiya, ungayigcina ukuze iphindwe ekukhiqizeni.

Imodi ye-Pulse vs. Continuous Wave

Nge-aluminium, imodi ye-continuous wave (CW) ivamise ukukhethwa ekushiseleni okugcwele ngoba igcina i-keyhole ezinzile. Kodwa-ke, imodi ye-pulse ingaba usizo nge-aluminium encane lapho ukulawula ukushisa kubalulekile - isikhathi sokuphumula phakathi kwama-pulses sivumela i-weld pool ukuthi iqine kancane, kunciphisa ubungozi bokushisa ngaphezulu.

Izinga Lokudla Ucingo

Uma usebenzisa ucingo lokugcwalisa emajoyintini e-aluminium, izinga lokudla kufanele lihambisane nesivinini sokuhamba namandla. Ucingo oluningi kakhulu lukhiqiza i-bead ekhubazekile nokungahlangani okungenzeka ezinzwaneni; ucingo oluncane kakhulu lubangela ukungagcwali. Indawo yokuqala esebenzayo ngu-1.5–3.0 m/min ngocingo lwe-aluminium luka-1.0 mm, kulungiswa phezulu ngezinto ezijiyile nesivinini esiphezulu sokuhamba.

Ukukhethwa Kwegesi Yokuvikela Nezinga Lokugeleza

Ukukhetha igesi kunomthelela omkhulu kukhwalithi yokushisela kwe-aluminium kunensimbi. Izinketho ezintathu ezivame kakhulu:

Uhlobo Lwegesi	Izinga Lokugeleza	Okungcono Kakhulu
I-Argon (Ar)	15–20 L/min	Ukushisela kwe-aluminium okujwayelekile; i-arc ezinzile, ama-weld ahlanzekile
I-Argon ne-Helium (50/50)	15–25 L/min	Izingxenye ezijiyile; ukungena okujulile, i-pool eshisayo
I-Nitrogen (N&sub2;)	15–20 L/min	Izinhlelo ezibiza kancane; okwamukelekile kumajoyinti angabalulekile

Isexwayiso: I-nitrogen ingasabela ne-aluminium encibilikile yakhe i-aluminium nitride, engabangela ukuqina okulimazayo endaweni yokushisela. Ezinhlelweni zokwakha noma ezithwala umthwalo, i-argon noma izingxube ze-argon-helium ziyanconyiwa kakhulu.

Ukulungiswa Kwendawo: Inkinga Yongqimba Lwe-Oxide

I-aluminium yakha ungqimba lwe-oxide lwemvelo (Al&sub2;O&sub3;) elinezinga lokuncibilika eliseduze kuka-2072 °C - cishe kathathu izinga lokuncibilika le-aluminium eyisisekelo (660 °C). Uma lolu ngqimba lwe-oxide lungasuswa ngaphambi kokushisela, lungabangela ukungahlangani okuphelele, i-porosity, nokufakwa kwezinto ezingafuneki.

Izinyathelo zokulungiselela ezinconyiwe:

Ukususwa ngomshini: Sebenzisa ibhulashi locingo lensimbi engagqwali (elinikezelwe kuphela ku-aluminium) ukususa ungqimba lwe-oxide phakathi kwamahora angu-2–4 ngaphambi kokushisela.
Ukuhlanza ngamakhemikhali: Ezinhlelweni ezibalulekile, susa amafutha nge-acetone noma i-solvent enobunikazi, bese u-etch ngesisombululo se-sodium hydroxide bese ugeza ngamanzi ahlanzekile.
Ukuphathwa kwesikhathi: I-oxide iphinde yakheke phakathi kwamahora angu-4–8 ngemva kokuhlanza ezimweni ezijwayelekile. Ukushisela kufanele kuqale ngokushesha ngemva kokulungiselela.

Ukulawula i-Porosity Kuma-Weld E-Aluminium

I-hydrogen porosity iyiphutha elivame kakhulu ekushiseleni nge-laser kwe-aluminium. I-aluminium ewuketshezi inokuncibilika okuphezulu kwe-hydrogen, kodwa njengoba i-weld pool iqina, ukuncibilika kwehla kakhulu, kubambe amabhamuza egesi.

Izinyathelo ezisebenzayo zokulwa:

Qinisekisa ukuthi ukumbozwa kwegesi evikelayo kudlulela ngaphezu kuka-5–10 mm ngale komugqa ongemuva we-weld pool.
Gcina ucingo lokugcwalisa endaweni eyomile, eshiswayo; ucingo lwe-aluminium lumunca umswakama.
Gcina isivinini esizinzile sokuhamba - ukwehla kungazelelwe kubangela ukuthi i-pool ikhule futhi imunce i-hydrogen eningi.
Qinisekisa ukuthi ukungaguquguquki komugqa we-weld kuhlala ngaphakathi kuka-±0.1 mm, ngoba izikhala ezingajwayelekile zibamba umoya futhi zandisa ubungozi be-porosity.

Ukungaguquguquki Kokushisela Nokulawula Ikhwalithi

Umshini wokushisela nge-laser ophathwa ngesandla ekucushweni kwethu kwe-1500 W ufinyelela ukungaguquguquki komugqa we-weld kuka-±0.1 mm ngaphansi kwemiphumela efanele. Leli zinga lokunemba lanele izinhlelo eziningi zezimboni ze-aluminium, okuhlanganisa ama-battery trays, ama-heat exchangers, nama-profile ezakhiwo. Uhlelo lokupholisa ngamanzi lusekela ukusebenza okuqhubekayo kwamahora angu-8+, okusho ukuthi ukuzinza kwemiphumela kugcinwa phakathi namashift amade okukhiqiza ngaphandle kokuphambuka kokushisa emthonjeni we-laser.

Isithenjwa Sokubheka Imiphumela Yokuqala Ngokushesha

Ipharamitha	Ishidi le-Al elingu-1 mm	Ipuleti le-Al elingu-2 mm	Ipuleti le-Al elingu-3 mm
Amandla	800–1000 W	1200–1400 W	1400–1500 W
Isivinini	25–35 mm/s	12–20 mm/s	8–12 mm/s
Ukudla Ucingo	1.5–2.0 m/min	2.0–2.5 m/min	2.5–3.0 m/min
Igesi (Ar)	15 L/min	18 L/min	20 L/min
I-Defocus	0 kuya +1 mm	0 mm	−0.5 kuya 0 mm

Lawa manani ayizindawo zokuqala zama-alloys e-aluminium ochungechungeni lwe-5000 nolwe-6000. Ukulungisa kahle ngokusekelwe ku-geometry yakho yejoyinti, i-alloy temper, nokwakheka kocingo kuzoletha imiphumela emihle kakhulu.

Ngingasebenzisa imiphumela efanayo kuma-alloys e-aluminium ahlukene?

Cha. I-aluminium yochungechunge lwe-5000 (i-Mg-alloyed) nolwe-6000 (i-Mg-Si-alloyed) inezinhlobo ezahlukene zokuncibilika nokuzwela ekuqhekekeni. Uchungechunge lwe-6000 luthambekele ekuqhekekeni okushisayo futhi lungadinga imiphumela ye-pulse eguquliwe noma ucingo oluhlukile lokugcwalisa (njenge-alloy engu-4043 noma engu-5356).

Kungani ama-weld ami enensalela emnyama?

Insalela emnyama ngokuvamile ikhombisa ukumbozwa kwegesi evikelayo okunganele noma ukungcola endaweni ye-aluminium. Khuphula izinga lokugeleza kwegesi, qinisekisa ukuthi i-nozzle ihlanzekile futhi ibekwe kahle, futhi qinisekisa ukuthi ungqimba lwe-oxide lususiwe ngaphambi kokushisela.

Ngingagcina amasethi amangaki emiphumela?

Uhlelo lusekela ukugcina amaqembu angaphezu kuka-50 emiphumela, okuvumela abasebenzi ukuthi bagcine izilungiselelo ezilungiselelwe kuma-alloys ahlukene, ubukhulu, nezinhlobo zamajoyinti ukuze bakubuyise ngokushesha ngesikhathi sokukhiqiza.