Mmekọrịta dị n'etiti laser na ihe gụnyere ọtụtụ ihe ngosi anụ ahụ na njirimara. Edemede atọ ndị na-esote ga-ewebata ihe atọ dị mkpa anụ ahụ metụtara usoro ịgbado ọkụ laser iji nye ndị ọrụ ibe ha nghọta nke ọma nke ọma.usoro ịgbado ọkụ laser: kewara n'ime ọnụego nnabata laser na mgbanwe na steeti, plasma na mmetụta igodo. N'oge a, anyị ga-emelite mmekọrịta dị n'etiti mgbanwe na ọnọdụ nke laser na ihe na absorption ọnụego.
Mgbanwe na ọnọdụ ihe kpatara mmekọrịta dị n'etiti laser na ihe
The laser nhazi nke metal ihe na-tumadi dabeere thermal nhazi nke photothermal mmetụta. Mgbe a na-etinye irradiation laser n'elu ihe ahụ, mgbanwe dị iche iche ga-eme na mpaghara elu nke ihe dị iche iche na ike dị iche iche. Mgbanwe ndị a gụnyere ịrị elu okpomọkụ elu, mgbaze, vaporization, nhazi oghere igodo, na ọgbọ plasma. Ọzọkwa, mgbanwe na ọnọdụ anụ ahụ nke ihe dị n'elu ihe ahụ na-emetụta nke ukwuu nnabata ihe nke laser. Site na mmụba nke njupụta ike na oge ime ihe, ihe metal ahụ ga-enwe mgbanwe ndị a na steeti:
Mgbeike lasernjupụta dị ala (<10 ^ 4w / cm ^ 2) na oge irradiation dị mkpụmkpụ, ike laser nke metal na-etinye n'ime ya nwere ike ime ka okpomọkụ nke ihe na-ebili n'elu elu n'ime, ma akụkụ siri ike na-anọgide na-agbanwe agbanwe. . A na-eji ya eme ihe maka nkwụsi ike nke akụkụ na ngbanwe nke akụkụ, yana ngwa, ngwa na bearings bụ ihe ka n'ọnụ ọgụgụ;
Site na mmụba nke njupụta ike laser (10 ^ 4-10 ^ 6w / cm ^ 2) na ịgbatị oge irradiation, elu nke ihe ahụ ji nwayọọ nwayọọ gbazee. Ka ike ntinye na-abawanye, ihe omimi mmiri siri ike na-eji nwayọọ nwayọọ na-aga n'akụkụ miri emi nke ihe ahụ. A na-ejikarị usoro anụ ahụ eme ihe maka mgbaze elu, ịgbanye ihe, mkpuchi, na ịgbado ọkụ ọkụ nke ọla.
Site n'ịbawanye ike njupụta ike (> 10 ^ 6w / cm ^ 2) na ịgbatị oge ọrụ laser, elu ihe ahụ abụghị naanị na-agbaze kamakwa vaporizes, na ihe ndị na-ekpo ọkụ na-agbakọta n'akụkụ ihe dị n'elu ma na-adịghị ike ionize iji mepụta plasma. Plasma a dị gịrịgịrị na-enyere ihe ahụ aka ịnabata laser; N'okpuru nrụgide nke vaporization na mgbasawanye, mmiri mmiri n'elu deforms na-etolite olulu. Enwere ike iji ogbo a maka ịgbado ọkụ laser, na-abụkarị n'ịgbado ọkụ na-ekpo ọkụ nke obere njikọ n'ime 0.5mm.
Site n'ịbawanye njupụta ike (> 10 ^ 7w / cm ^ 2) na ịgbatị oge irradiation, ihe dị n'elu na-eme ka vaporization siri ike, na-eme plasma nwere ogo ionization dị elu. Plasma dị ukwuu nwere mmetụta nchebe na laser, na-ebelata njupụta ike nke ihe omume laser n'ime ihe. N'otu oge ahụ, n'okpuru nnukwu mmeghachi omume vapor, a na-emepụta obere oghere, nke a na-akpọkarị keyholes, n'ime metal gbazere, ịdị adị nke keyholes bara uru maka ihe ahụ na-amịkọrọ laser, na nke a nwere ike iji maka laser miri emi fusion. ịgbado ọkụ, ịcha na mkpọpu ala, mmetụta hardening, wdg.
N'okpuru ọnọdụ dị iche iche, dị iche iche wavelengths nke laser irradiation na dị iche iche metal ihe ga-eme ka a kpọmkwem ụkpụrụ nke ike njupụta na nke ọ bụla ogbo.
N'ihe gbasara nnabata nke laser site na ihe, vaporization nke ihe bụ oke. Mgbe ihe na-adịghị eme vaporization, ma n'ime siri ike ma ọ bụ mmiri mmiri na-adọ, ya absorption nke laser na-agbanwe nwayọọ nwayọọ na-abawanye nke elu okpomọkụ; Ozugbo ihe ahụ vaporizes wee mepụta plasma na oghere igodo, nnabata laser ga-agbanwe na mberede.
Dị ka egosiri na eserese 2, ọnụego nnabata nke laser n'elu ihe n'oge ịgbado ọkụ laser dịgasị iche na njupụta ike laser na okpomọkụ dị elu. Mgbe ihe na-adịghị agbaze, ọnụ ọgụgụ absorption nke ihe onwunwe na laser ji nwayọọ nwayọọ na-abawanye site na mmụba nke elu okpomọkụ. Mgbe njupụta ike karịrị (10 ^ 6w/cm ^ 2), ihe ahụ na-eku ume ike, na-eme oghere igodo. Laser na-abanye n'ime oghere igodo maka ọtụtụ ntụgharị uche na nnabata, na-ebute mmụba dị ukwuu na ọnụego nnabata ihe na laser na mmụba dị ukwuu na omimi agbaze.
Ntinye nke Laser site na ihe igwe igwe - Ogologo ogologo
Ọnụọgụ a dị n'elu na-egosi usoro mmekọrịta dị n'etiti nlegharị anya, nnabata, na ogologo ogologo nke ọla ndị a na-ejikarị eme ihe na ụlọ okpomọkụ. Na mpaghara infrared, ọnụ ọgụgụ absorption na-ebelata na ntụgharị uche na-abawanye na mmụba nke ogologo ogologo. Ọtụtụ ọla na-egosipụta nke ọma 10.6um (CO2) wavelength infrared ìhè ebe adịghị ike na-egosipụta 1.06um (1060nm) ìhè infrared wavelength. Ngwa igwe nwere ọnụego nnabata dị elu maka lasers dị mkpụmkpụ, dị ka acha anụnụ anụnụ na ọkụ ndụ ndụ.
Ntinye nke Laser site na Ngwa igwe - Okpomọkụ ihe na njupụta ike Laser
Na-ewere aluminum alloy dị ka ihe atụ, mgbe ihe siri ike, laser absorption ọnụego bụ gburugburu 5-7%, mmiri mmiri absorption ọnụego bụ ruo 25-35%, na ọ nwere ike iru n'elu 90% na keyhole steeti.
Ọnụ ọgụgụ nnabata nke ihe na laser na-abawanye na okpomọkụ na-abawanye. Ọnụ ọgụgụ nnabata nke ihe igwe na ụlọ okpomọkụ dị ala. Mgbe okpomọkụ na-ebili na nso ebe mgbaze, ọnụ ọgụgụ ntinye ya nwere ike iru 40% ~ 60%. Ọ bụrụ na ọnọdụ okpomọkụ dị nso n'ebe a na-esi esi mmiri, ọnụego nnabata ya nwere ike iru 90%.
Ntinye nke Laser site na ihe igwe igwe - Ọnọdụ dị n'elu
A na-atụle ọnụọgụ absorption nke a na-ahụkarị site na iji metal dị larịị, ma na ngwa ndị bara uru nke ikpo ọkụ laser, ọ na-adịkarị mkpa ịbawanye ọnụego nnabata nke ụfọdụ ihe ngosi dị elu (aluminom, ọla kọpa) iji zere ire ere ụgha kpatara nnukwu echiche;
Enwere ike iji ụzọ ndị a:
1. Ịkwado kwesịrị ekwesị n'elu tupu ọgwụgwọ usoro iji melite reflectivity nke laser: prototype oxidation, sandblasting, laser ihicha, nickel plating, tin plating, graphite mkpuchi, wdg nwere ike niile mma ihe si absorption ọnụego nke laser;
Isi ihe bụ iji mee ka ihe siri ike nke elu ihe dị elu (nke na-eme ka ọtụtụ ntụgharị uche laser na absorption), yana ịbawanye ihe mkpuchi ahụ na ọnụ ọgụgụ dị elu. Site na ịmịnye ike laser na agbaze ma na-agbanwe ya site na ihe ndị na-emepụta ihe dị elu, a na-ebunye okpomọkụ laser na ihe ndabere iji melite ọnụego ntinye ihe ma belata ịgbado ọkụ mebere site na ihe ngosi dị elu.
Oge nzipu: Nov-23-2023
