Ndeipi gasi inoshandiswa ne cnc gasi yekucheka muchina?

1. Ndeipi gasi iyo cnc gasi yekucheka muchina inoshandisa?

Iyo cnc gasi yekucheka muchina imhando yekugadzira michina inoshandisa kupisa kwepamusoro-tembiricha yeplasma arc kunyunguduka munharaunda (uye kunyunguduka) iyo simbi pakuchekwa kweiyo workpiece, uye inoshandisa kukurumidza kwepamusoro-kumhanya plasma kubvisa yakanyungudutswa. simbi kugadzira kuchekwa.Oxygen inocheka simbi yakaoma-ku-kucheka.Inowanzo shandiswa iyo cnc gasi yekucheka muchina anoshanda magasi ndeaya:

1. Mhepo

Mhepo ine inenge 78% nitrogen nehuwandu, saka kuumbwa kwe slag kunoumbwa nekucheka kwemhepo kwakafanana zvikuru neiyo pakucheka ne nitrogen;uyezve, mhepo inewo inenge 21% okisijeni nehuwandu.Iko kumhanya kwemhepo yekucheka zvinyoro zvinyoro zvesimbi zvakare yakakwirira kwazvo;panguva imwecheteyo, mhepo ndiyo inonyanya kushanda gasi, uye nozzles uye electrode inoshandiswa zvine hupenyu hwepamusoro.

2. Okisijeni

Iyo cnc gasi yekucheka muchina inoshandisa okisijeni segasi rinoshanda rinogona kuwedzera kumhanya kwekucheka zvinyoro zvinyoro zvesimbi, asi kana okisijeni ichishandiswa yega pakucheka, pachava nemarara uye kerf oxidation, uye hupenyu hwemagetsi nemanozzles hwakaderera, izvo. zvichakanganisawo kushanda zvakanaka.uye kuderedza mari.

3. Argon

Argon gasi haatombopindirani nesimbi chero ipi zvayo pakupisa kwepamusoro, iyo argon inoshandiswa ne cnc gasi yekucheka muchina yakagadzikana, uye nozzles nema electrode anoshandiswa ane hupenyu hurefu hwebasa.Nekudaro, iyo argon plasma arc ine yakaderera voltage, yakaderera enthalpy, uye kushomeka kwekucheka kugona.Kuenzaniswa nekucheka kwemhepo, iyo cnc gasi yekucheka muchina wekucheka ukobvu ichaderedzwa ne25%.Mukuwedzera, munharaunda yekudzivirira argon, kudzvinyirirwa kwepamusoro kwesimbi yakanyungudutswa yakakura, iyo inenge 30% yakakwirira kudarika iyo iri mumhepo ye nitrogen, saka pachava nematambudziko akawanda e slag.Kunyange iyo cnc gasi yekucheka muchina wekucheka nemusanganiswa we argon uye mamwe magasi anogona kunge ane slag sticking matambudziko.Nekuda kweizvozvo, argon yakachena chete haiwanzo kushandiswa kucheka plasma nhasi.

4. Hydrogen

Hydrogen inowanzoshandiswa segasi rinobatsira kusanganisa nemamwe magasi anoshandiswa ne cnc gas cutting machine.Semuenzaniso, gasi rinonyatsozivikanwa H35 (chikamu chechikamu chehydrogen 35%, uye imwe yose ndeye argon) imwe yemagasi ane simba rakasimba rekucheka kweplasma arc, iyo inonyanya kukonzerwa nehydrogen.Sezvo hydrogen inogona kuwedzera zvakanyanya arc voltage, iyo hydrogen plasma jet ine yakakwira enthalpy kukosha.Kana yakasanganiswa ne argon yemuchina wekucheka gasi cnc, kukwanisa kwekucheka kwejet yeplasma kunovandudzwa zvikuru.Kazhinji, kune zvigadzirwa zvesimbi zvine ukobvu hunodarika 70mm, argon + hydrogen inowanzoshandiswa.Sekucheka gasi, kana jeti remvura richishandiswa kuwedzera kumanikidza argon + hydrogen plasma arc, kukwirira kwekucheka kwekucheka kunogonawo kuwanikwa kana cnc gasi yekucheka muchina wekucheka.

5. Nitrogen

Nitrogen inowanzoshandiswa gasi rekushanda kune cnc gasi rekucheka muchina.Pasi pemamiriro emagetsi emagetsi epamusoro, nitrogen plasma arc ine kusashanda kuri nani uye yakakwirira jet simba pane argon, kunyangwe kana uchicheka simbi yemvura zvinhu zvine viscosity yakakwirira senge Munyaya yesimbi isina tsvina uye nickel-based alloys, huwandu hwe slag yakaturika. pamucheto wezasi wekucheka zvakare idiki kwazvo kana cnc gasi yekucheka muchina wekucheka.Muchiito chekucheka, zvinokurudzirwa kusarudza gasi rakakodzera rekushanda kune cnc gasi yekucheka muchina maererano nezvinodiwa zvako zvekucheka uye mari yehupfumi.

Chechipiri, iyo yemhepo plasma yekucheka muchina zvinodiwa kumhepo

Air plasma yekucheka muchina, sekureva kunoita zita, muchina wekucheka plasma unoshandisa mweya segasi rinoshanda.Iyo cnc gasi yekucheka muchina ine zvimwe zvinodiwa pamhepo inoshandiswa:

Mhepo inoshandiswa ne cnc gasi yekucheka muchina inomanikidzwa mhepo, inoda kuti gasi rive rakaoma uye rakachena, uye kuyerera uye kudzvanywa kuve kwakadzikama, nekuti panguva yakajairika yekucheka maitiro e cnc gasi rekucheka muchina, kumanikidza kwegasi. , mhepo yakagadzikana inoyerera, uye kuoma uye kuchena kwegesi kune zvakananga.Hunhu hwe cnc gasi rekucheka muchina wekucheka uye kana iyo arc inogona kutangwa zvakajairika.Kazhinji, inogona kuongororwa nenzira dzinotevera:

1. Tarisa kana mhepo yekumanikidza gauge pane cnc gasi yekucheka maaramu emuchina.Kana iyo cnc gasi yekucheka muchina maaramu, ndapota shandura bhatani rekugadzirisa mhepo kuti uwedzere mhepo.

2. Tarisa kana mhepo inoyerera pamushini we cnc gasi wekucheka wakajairika, vhura mhepo yekuburitsa switch kuti udzikise kuti uone kana iyo air pressure gauge inodonha, kana kudonha kwakanyanya, zvinoreva kuti kuyerera kwemhepo hakuna kukwana. , ipapo gasi rekuchengetedza gasi rinofanira kuwedzerwa pamberi pe cnc gasi yekucheka muchina kuti ive nechokwadi chekufambisa gasi;

3. Tarisa kana gasi raoma uye rakachena, dzvanya pasi pemafuta-mvura separator yemuchina wekucheka gasi cnc, woiregedza.Kana pane yakawanda yemvura yakachena mumhepo yakabudiswa, zvinoreva kuti kune mafuta akawanda uye mvura mumhepo.Mhepo yerudzi urwu haifanirwe kushandiswa.