Ntchito ya gasi woteteza mu njira yowotcherera ya laser
(1) Gasi wodzitchinjiriza amatha kuteteza mandala a mutu wa laser ku kuipitsidwa kwa nthunzi wachitsulo ndi kutulutsa kwamadzi.
(2) Nthunzi wachitsulo umayamwa mtengo wa laser ndi kuwuyika mumtambo wa plasma. Ngati madzi a m'magazi achuluka kwambiri, kuwala kwa laser kumadyedwa ndi plasma kumlingo wina. Mpweya wotchinjiriza ukhoza kumwaza zitsulo zachitsulo kapena mitambo ya plasma, kuchepetsa chitetezo cha laser, ndikuwonjezera mphamvu yogwiritsira ntchito laser.
(3) Mpweya woteteza ungateteze dziwe losungunuka. Zida zina zikamatenthedwa, makutidwe ndi okosijeni anganyalanyazidwe. Chitetezo chingathenso kunyalanyazidwa. Komabe, pa ntchito zambiri, helium, argon, nayitrogeni ndi mpweya wina amagwiritsidwa ntchito pofuna chitetezo, kotero kuti workpiece akhoza Pewani makutidwe ndi okosijeni pa kuwotcherera.
Commonly zoteteza mpweya kwa laser kuwotcherera
(1) Helium: mkulu ionization mphamvu, otsika ionization digiri pansi zochita za laser, akhoza bwino kulamulira mapangidwe plasma mtambo, ndipo ali otsika ntchito, kwenikweni si mankhwala anachita ndi zitsulo, ndi abwino kwambiri zoteteza mpweya. Komabe, mtengo wa helium ndi wokwera kwambiri ndipo umagwiritsidwa ntchito pofufuza zasayansi.
(2) Mpweya wa Argon: Mphamvu ya ionization ndi yochepa, ndipo digiri ya ionization ndi yapamwamba pansi pa machitidwe a laser, omwe sali oyenerera kulamulira mapangidwe a mtambo wa plasma, ndipo adzakhala ndi zotsatira zina pakugwiritsa ntchito bwino kwa laser; koma ntchito yake ndi yotsika, yomwe ndi yovuta kufananiza ndi wamba Chitsulocho chimakhala ndi mankhwala, ndipo mtengo wake siwokwera, choncho ukhoza kugwiritsidwa ntchito ngati mpweya wodzitetezera. .
(3) Nayitrogeni: mphamvu ya ionization yapakati, yokwera kuposa argon komanso yotsika kuposa helium. Nayitrojeni amatha kuchitapo kanthu ndi aluminiyamu aloyi ndi chitsulo cha kaboni pa kutentha kwina kuti apange nitrides, zomwe zimawonjezera kuphulika kwa weld, kuchepetsa kulimba, komanso kukhala ndi vuto lalikulu pamakina olumikizirana olowa. Choncho, sikulimbikitsidwa kugwiritsa ntchito nayitrogeni. Aluminium alloy ndi carbon steel welds amatetezedwa. Nitride yomwe imapangidwa ndi machitidwe a mankhwala pakati pa nayitrogeni ndi chitsulo chosapanga dzimbiri imatha kukulitsa mphamvu ya olowa, zomwe zingathandize kukonza makina a weld. Choncho, nayitrogeni angagwiritsidwe ntchito ngati chotchinga mpweya pamene kuwotcherera zitsulo zosapanga dzimbiri.
Njira yothetsera gasi yodzitetezera
Panopa pali njira ziwiri zazikulu zowuzira gasi woteteza:
(1) Ndi chitetezo cham'mbali cha shaft yam'mbali
(2) Ndi chitetezo coaxial, monga momwe chithunzi chili pansipa.
Mpweya wotetezera womwe umawombedwa mkati sikuti umangofunika kuteteza dziwe la weld panthawi yake, komanso uyenera kuteteza malo olimba omwe amawotchedwa. Chifukwa chake, chitetezo chowombera mbali cha mbali ya shaft chimagwiritsidwa ntchito nthawi zambiri, chifukwa njira yodzitetezera ndiyofanana Njira yodzitetezera ya coaxial ndi yotakata, makamaka kudera lomwe weld wangolimba.
Kuwomba m'mbali mwa sideshaft Kwa ntchito zauinjiniya, sizinthu zonse zomwe zingatetezedwe ndi kuwomba mbali kwa sideshaft. Pazinthu zina zapadera, chitetezo cha coaxial chokha chingagwiritsidwe ntchito. Iyenera kuyang'aniridwa kuchokera ku kapangidwe kazinthu ndi mawonekedwe olumikizana. Kusankha kugonana.
Pakuti mawonekedwe weld ndi wowongoka, olowa mawonekedwe akhoza kukhala olowa matako, m'chiuno olowa, ngodya olowa kapena alipo welded olowa. Zogulitsa zamtunduwu zimagwiritsa ntchito njira yodzitetezera m'mbali.
Pakuti mankhwala amene kuwotcherera mawonekedwe ndi zozungulira kapena polygonal, ndi mawonekedwe olowa ndi matako olowa, zilolo zimfundo, alipo kuwotcherera mfundo, etc., ndi bwino ntchito coaxial chitetezo kwa mtundu uwu wa mankhwala.
Pamwambapa ndi ntchito ndi chitetezo njira ya laser kuwotcherera kutchinga mpweya. Muzogwiritsira ntchito zenizeni, ziyenera kusankhidwa malinga ndi momwe zilili.
Nthawi yotumiza: Nov-19-2021