Imashini igabanya plasma igenzurwa numubare ufite imbaraga nyinshi zidafite umutwaro hamwe na voltage ikora bisaba imbaraga nyinshi kugirango uhagarike plasma arc mugihe ukoresheje gaze ifite ingufu nyinshi za ionisation nka azote, hydrogen cyangwa umwuka.Iyo ikigezweho gihoraho, kwiyongera kwa voltage bisobanura kwiyongera kwa arc ishyaka ryinshi no kwiyongera mubushobozi bwo guca.Niba diameter ya jet yagabanutse kandi umuvuduko wa gazi wiyongereye mugihe ishyaka ryiyongereye, umuvuduko wo guca vuba hamwe nubwiza bwiza bwo guca.
1. Hydrogen isanzwe ikoreshwa nka gaze yingoboka kugirango ivange nizindi myuka.Kurugero, gaze izwi cyane H35 (igice cya hydrogène igice cya 35%, ahasigaye ni argon) nimwe mubushobozi bukomeye bwo guca gaze arc, cyane cyane ifitiye hydrogene.Kubera ko hydrogène ishobora kongera ingufu za arc arc, indege ya hydrogène plasma ifite agaciro gakomeye, kandi iyo ikoreshejwe hamwe na gaze ya argon, ubushobozi bwo guca indege ya plasma buratera imbere cyane.
2. Oxygene irashobora kongera umuvuduko wo guca ibikoresho byuma bya karubone.Iyo ukata hamwe na ogisijeni, uburyo bwo gukata hamwe na CNC imashini ikata flame birashoboka cyane.Ubushyuhe bwo hejuru nimbaraga nyinshi plasma arc bituma umuvuduko wo guca vuba.Imashini ya spiral igomba guhuzwa na electrode irwanya okiside yubushyuhe bwo hejuru, kandi electrode ikumirwa mugihe utangiye arc.Kurinda ingaruka kugirango wongere ubuzima bwa electrode.
3, umwuka urimo hafi 78% yubunini bwa azote, bityo rero gukoresha guca umwuka kugirango ube shitingi na azote ni ibintu bitangaje;umwuka urimo kandi hafi 21% yubunini bwa ogisijeni, kubera ko hari umwuka wa ogisijeni, umwuka Umuvuduko wo guca ibikoresho bike bya karubone nabyo ni byinshi;icyarimwe, umwuka na gaze ikora cyane mubukungu.Nyamara, iyo gukata ikirere bikoreshejwe wenyine, hariho ibibazo nka dross na okiside ya slit, kwiyongera kwa azote, nibindi, kandi ubuzima bwo hasi bwa electrode na nozzle nabyo bigira ingaruka kumikorere no kugabanya ibiciro.Kubera ko gukata plasma arc muri rusange ikoresha imbaraga zamashanyarazi zifite imiterere ihoraho cyangwa ihanamye cyane, impinduka zubu ni nto nyuma yuburebure bwa nozzle bwiyongereye, ariko uburebure bwa arc bwiyongera na voltage ya arc iriyongera, bityo byongera imbaraga za arc;Uburebure bwa arc bugaragara kubidukikije buriyongera, kandi imbaraga zabuze na arc inkingi ziriyongera.
4. Azote ni gaze ikora.Ukurikije ingufu z'amashanyarazi menshi, azote plasma arc ifite ituze ryiza ningufu zindege zirenze argon, kabone niyo yaba ari ibikoresho bifite ububobere buke bwo guca ibyuma byamazi.Mu byuma bidafite ingese hamwe na nikel-ishingiye ku mavuta, ingano ya slag ku nkombe yo hepfo yigitereko nayo ni nto.Azote irashobora gukoreshwa wenyine cyangwa ifatanije nizindi myuka.Imashini zikata plasma zikoreshwa kenshi.Kurugero, azote cyangwa umwuka bikoreshwa nka gaze ikora mugukata byikora.Iyi myuka yombi yahindutse imyuka isanzwe yo gukata byihuse ibyuma bya karubone.Azote rimwe na rimwe ikoreshwa nka gaze ya arcing yo gukata ogisijeni plasma arc.
5. Gazi ya Argon ntishobora gukora nicyuma icyo aricyo cyose mubushyuhe bwo hejuru, kandi imashini ikata ya argon numero igenzura neza.Byongeye kandi, nozzles na electrode zikoreshwa bifite ubuzima bwo hejuru.Nyamara, argon plasma arc ifite voltage nkeya, agaciro gake cyane, hamwe nubushobozi buke bwo guca.Umubyimba wo gukata uri munsi ya 25% ugereranije no gukata ikirere.Mubyongeyeho, uburemere bwubuso bwicyuma gishongeshejwe ni bunini mubidukikije birinzwe na argon.Ari hejuru ya 30% ugereranije nikirere cya azote, bityo hazabaho ibibazo byinshi byo guta.Nubwo imvange ya argon nizindi myuka ikoreshwa, harikibazo cyo kwizirika kumurongo.Niyo mpamvu, gaze ya argon isukuye yakoreshejwe gake mugukata plasma.
Gukoresha no guhitamo gaze muri mashini yo guca plasma ya CNC ni ngombwa cyane.Ikoreshwa rya gaze rizagira ingaruka zikomeye zo guca neza.
Igihe cyo kohereza: Nzeri-02-2019