CW laser na QCW laser na Welding

Njirimara nkesa ike

Ihe ama ama nke lasers CW bụ nkesa ike Gaussian ha, ebe ikesa ike nke akụkụ obe nke laser na-ebelata site na etiti apụta na ụkpụrụ Gaussian (nkesa nkịtị). Njirimara nkesa a na-enye ohere CW lasers iji nweta oke nlebara anya nkenke na nhazi arụmọrụ, ọkachasị na ngwa chọrọ itinye ume ike.

Eserese nkesa ike laser CW

Uru nke Na-aga n'ihu Wave (CW) Laser Welding

Echiche Microstructural

Inyocha microstructure nke ọla na-ekpughe uru dị iche iche nke ịgbado ọkụ laser na-aga n'ihu n'elu Quasi-Continuous Wave (QCW) ịgbado ọkụ. QCW pulse welding, nke amachibidoro site na oke ugboro ole ya, nke na-adịkarị gburugburu 500Hz, na-eche mgbanwe mgbanwe n'etiti ọnụego nfe na omimi ntinye. Ọnụego ndakọrịta dị ala na-ebute omimi ezughi oke, ebe oke nkpuchi na-egbochi ọsọ ịgbado ọkụ, na-ebelata arụmọrụ. N'ụzọ dị iche, CW laser ịgbado ọkụ, site na nhọrọ nke kwesịrị ekwesị laser isi diameters na ịgbado ọkụ isi, na-enweta nke ọma na-aga n'ihu ịgbado ọkụ. Usoro a na-egosi na a pụrụ ịdabere na ya na ngwa ndị chọrọ iguzosi ike n'ezi ihe dị elu.

Ntụle mmetụta mmetụta okpomọkụ

Site n'echiche nke mmetụta thermal, QCW pulse laser welding na-ata ahụhụ site na okwu nke overlap, na-eduga na kpo oku nke weld seam ugboro ugboro. Nke a nwere ike iwebata enweghị nkwekọ n'etiti microstructure metal na ihe nne na nna, gụnyere mgbanwe dị iche iche n'ogo nkwụsị na ọnụego jụrụ oyi, si otú ahụ na-abawanye ohere nke mgbawa. CW laser ịgbado ọkụ, n'aka nke ọzọ, na-ezere a nke site na-enye a ọzọ edo na-aga n'ihu kpo oku usoro.

Mfe nke mmezi

N'ihe gbasara ọrụ na ngbanwe, ịgbado ọkụ laser QCW chọrọ nlegharị anya nke ọma nke ọtụtụ paramita, gụnyere ugboro ugboro ugboro ugboro, ike kacha elu, obosara usu, okirikiri ọrụ, na ndị ọzọ. CW laser ịgbado ọkụ na-eme ka usoro mmezi ahụ dị mfe, na-elekwasị anya n'ụdị waveform, ọsọ, ike, na ego defocus, na-ebelata ihe isi ike ọrụ.

Ọganihu teknụzụ na CW Laser Welding

Ọ bụ ezie na QCW laser ịgbado ọkụ na-mara maka elu elu ike na ala thermal ntinye, bara uru maka ịgbado ọkụ okpomọkụ na-enwe mmetụta na oké mkpa-walled ihe, ọganihu na CW laser ịgbado ọkụ technology, karịsịa maka elu-ike ngwa (nke a n'elu 500 watts) na ịgbado ọkụ miri emi nke dabere na mmetụta igodo, agbasawanyela oke ngwa ya na arụmọrụ ya nke ọma. Ụdị laser a dabara adaba maka ihe dị oke karịa 1mm, na-enweta oke akụkụ dị elu (karịa 8: 1) n'agbanyeghị ntinye ọkụ dị elu.

Quasi-Continuous Wave (QCW) Laser Welding

Nkesa ike lekwasịrị anya

QCW, nke na-eguzo maka "Quasi-Continuous Wave," na-anọchite anya teknụzụ laser ebe laser na-ewepụta ìhè n'ụzọ nkwụsị, dị ka e gosiri na foto a. N'adịghị ka otu ike nkesa nke otu ọnọdụ na-aga n'ihu lasers, QCW lasers na-etinye uche ha ike karịa. Njirimara a na-enye lasers QCW njupụta ume dị elu, na-atụgharị n'ime ikike ntinye siri ike. Mmetụta metallurgical na-esi na ya pụta dabara na ọdịdị "ntu" nwere oke omimi-na-obosara, na-enye ohere lasers QCW ime nke ọma na ngwa ndị metụtara alloys ntụgharị dị elu, ihe na-emetụ ọkụ, na obere ịgbado ọkụ.

Nkwụsi ike emelitere yana Mbelata nnyonye anya Plume

Otu n'ime uru akpọpụtara nke QCW laser ịgbado ọkụ bụ ike ya ibelata mmetụta nke metal plume na ihe si absorption ọnụego, na-eduga n'usoro kwụsiri ike karị. N'oge mkparịta ụka laser-ihe, ikuku na-ekpo ọkụ nwere ike ịmepụta ngwakọta nke vapo metal na plasma n'elu ọdọ mmiri gbazee, nke a na-akpọkarị ụda ígwè. Igwe ọkụ a nwere ike ichebe elu ihe ahụ site na laser, na-ebute nnyefe ike na-adịghị akwụ ụgwọ yana ntụpọ dị ka spatter, ihe mgbawa, na olulu. Agbanyeghị, mwepụta nke lasers QCW na-adịte aka (dịka ọmụmaatụ, mgbawa 5ms na-esochi nkwụsịtụ 10ms) na-ahụ na usu laser ọ bụla na-erute n'elu ihe ahụ nke igwe anaghị emetụta ya, na-ebute usoro ịgbado ọkụ siri ike, ọkachasị bara uru maka ịgbado ọkụ.

Stable Melt Pool Dynamics

Mmetụta nke ọdọ mmiri gbazee, karịsịa n'ihe gbasara ike ndị na-eme na keyhole, dị oké mkpa n'ịchọpụta àgwà nke weld. Laser na-aga n'ihu, n'ihi ikpughe ogologo oge ha na mpaghara okpomoku na-emetụta, na-eme ka ọdọ mmiri gbazee buru ibu nke jupụtara na ọla mmiri. Nke a nwere ike ibute ntụpọ jikọtara ya na nnukwu ọdọ mmiri gbazee, dị ka mkpọda igodo igodo. N'ụzọ dị iche, ike a na-elekwasị anya na oge mkparịta ụka dị mkpirikpi nke QCW laser ịgbado ọkụ na-etinye uche na ọdọ mmiri gbazee gburugburu keyhole, na-akpata nkesa ike dị iche iche na mbelata nke porosity, cracking, na spatter.