Nguva yekusarudza negative focus yekucheka nelaser

"Negative focus" (inozivikanwawo se "lower focus" kana "focus inside the plate") yemuchina wekucheka laser ndiyo nzira imwe chete inokosha yekugadzirisa nzvimbo yelaser focus. Muchidimbu, negative focus inoreva kuisa focus yelaser pasi pechinhu chinofanira kuchekwa. Kushandisa negative focus kunonyanya kuenderana nemisimboti nezvinangwa zvinotevera: Kana focus iri mukati mechinhu, saizi yedanda pamusoro pechinhu ichi inokura uye huwandu hwesimba huchaderedzwa zvishoma. Zvisinei, izvi zvinobatsira mune mamwe mamiriro ezvinhu nekuti zvinogadzira nzira yakafara yechiedza, iyo inobatsira:

1. Kubuda kwetsvina:Kuchekwa kwakakura kunobvumira magasi ekuwedzera (akadai seokisijeni nenitrogen) kuputitsa simbi yakanyungudutswa zvinobudirira kudzivirira kusungirirwa kwetsvina.

2. Wana mhando yechikamu iri nani:Kana zvinhu zvakakora, zvinogona kuita kuti kucheka kwacho kuve kwakatwasuka uye kwakapfava.

3. Dzivirira lenzi:Kutarisa pasi kunogona kudzivirira kupenya kunokonzerwa nekucheka kubva pakudzokedzana zvakananga kuenda kune lenzi yekutarisa.

Unofanira kushandisa rini negative focus (main application scenario)

1. Kucheka zvinhu zvesimbi zvakakora (kunyanya simbi yekabhoni)

• Iyi ndiyo mamiriro ekushandisa anonyanya kukosha ekutarisa zvisina kunaka.
• Chikonzero: Pakucheka maplate akakora, nguva yakareba yekushanda inodiwa kuti unyungudutse ukobvu hwese. Kushandisa negative coke (kazhinji 1/3 kusvika 1/2 yeukobvu hweplate) kunogona kuwedzera upamhi hwechikamu chepamusoro chekucheka, kuitira kuti okisijeni (pakucheka carbon steel) igone kupinda zvakanaka pasi pekucheka, kuchengetedza oxidation exothermic reaction yakakwana, uye kubvisa slag zvakanaka. Kana ukashandisa positive focus kana zero focus (tarisa pamusoro kana pamusoro), chikamu chepamusoro chekucheka chakanyanya kutetepa, izvo zvinozoita kuti pave nekucheka kusina kujeka pasi, slag yakakomba uye chikamu chakakombama.
• Ruzivo rweruzivo: Pakucheka mapurati esimbi yekabhoni anopfuura 6mm, zvinowanzo dikanwa kutanga kushandisa negative coke.
• Sezvo ukobvu huchiwedzera, huwandu hwechinhu chisina kujeka (kudzika kwechinhu chacho) hunofanira kuwedzera zvinoenderana. Semuenzaniso, kana ukacheka simbi yekabhoni ye20mm, nzvimbo yacho inogona kuiswa 3-5mm pasi pevhu.

2. Kutsvaga chikamu chekucheka chemhando yepamusoro

• Kana paine zvinodiwa zvakanyanya zvekumira, kutsvedzerera uye zvikamu zvekucheka zvisina tsvina, kunyangwe pazvinhu zvine ukobvu hwepakati, kutarisa zvishoma zvisina kunaka kunogona kushandiswa kugadzirisa kufamba kwemhepo uye kugoverwa kwesimba.

3. Pakuita oparesheni yekuboora

• Kudzivirira kupisa kwakanyanya kunokonzerwa nekupwanyika kwetsvina panguva yekuboorwa kuti kusakuvadze lenzi, chinhu chinowanzo shandiswa pakuisa pfungwa pachinhu chinoboorwa (simba shoma uye nzvimbo yakadzika), uye ipapo chinhu chinogadziriswa panzvimbo inodiwa pakucheka mushure mekunge kuboorwa kwapera.

Kana usingafaniri kushandisa pfungwa dzisina kunaka

1. Cheka pepa (kazhinji <3mm)

• Chikonzero: kuchekerera simbi diki kutsvaga kumhanya uye kunyatsorongeka. Kushandisa zero focus kana slight positive focus kunobvumira nzvimbo diki uye simba rakawanda, zvichikonzera kutetepa kwekerfs, kumhanya nekukurumidza uye kuchekwa kwakapfava.

2. Paunenge uchiita machining emhando yepamusoro

• Chikonzero: Kuti zvive nechokwadi chekuti nzvimbo diki pane dzose uye kuti zvinhu zvacho zviri papi, chinhu chinonyanya kutariswa chinowanzoiswa pamusoro pechinhu chacho (zero focus).

3. Paunenge uchishandisa nitrogen kucheka simbi isina ngura kuti uwane pamusoro wakajeka

• Chikonzero: Simbi isina ngura inochekwa nenitrogen inoshandisa simba relaser kuti inyungudise zvinhu, uye yobva yashandisa nitrogen ine simba rakawanda kuti ibvise kunyungudika pasina oxygen reaction. Kuti pave ne "bright surface" yakatsetseka, isina oxidized, uye isina oxidized, hapana focus kana slight positive focus inowanzo shandiswa kuona kuti simba rakawanda uye kuti zvidimbu zvidiki uye zvakanaka.

Nzira yekuziva sei huwandu hwakanakisa hwekutarisa kwakashata?

Hapana kukosha kwakatarwa, uye nzvimbo yakanakisisa yekutarisa inofanira kusarudzwa kuburikidza nekuyedzwa kwemaitiro uye inokanganiswa nezvinhu zvinotevera:

• Rudzi rwezvinhu:simbi yekabhoni, simbi isina ngura, aruminiyamu dzine nzira dzakasiyana dzekutarisa.
• Ukobvu hwezvinhu:ukobvu hwacho hunowedzera, kazhinji huwandu hwekutarisa kusina kunaka hunowedzera.
• Kucheka gasi:Kucheka okisijeni nekucheka nitrogen zvine nzira dzakasiyana dzekutarisa.
• Simba reLaser uye maitiro:Simba rakasiyana uye mhando yemwenje (senge single mode vs multi-mode) michina ine nzvimbo dzakasiyana dzekutarisa dzakanyatsonaka.

Nzira yakajairika yekuedza ndeiyi:

1. Kuenzanisa kwakatarisana:Tanga wawana nzvimbo ye "zero focus" pamusoro pechinhu (kazhinji muchina une chirongwa chekugadzirisa otomatiki kana nemaoko).

2. Kugadzira mienzaniso yekuedza zvinhu zvakakosha:pasi pesimba rimwe chete, kumhanya uye kumanikidzwa kwegesi, cheka mitsetse yakatwasuka kana mapatani munzvimbo dzakasiyana dzekutarisa (semuenzaniso, kubva pa3mm kusvika -3mm, nhanho imwe pa0.5mm kana 1mm).

3. Mhedzisiro yekuongorora:cherechedza kunaka kwechikamu, kumira kwakamira, mamiriro ekurembera kwetsvina, upamhi hwemucheko uye kana pasi pechikamu chimwe nechimwe chakachekwa.

4. Sarudza pfungwa yakanakisisa:Hunhu hwakakwana hwekucheka, kugadzikana uye kushanda zvakanaka, sarudza nzvimbo yakanakisa yekutarisa sema parameter ekuita pasi pehukobvu hwechinhu chacho.

Pfupiso

Nheyo huru: Nzvimbo chaiyo yekutarisa nguva dzose inoenderana nezvinhu, ukobvu, simba remuchina uye mhando inodiwa. Maparamita ekushanda akakodzera anofanirwa kuwanikwa kuburikidza nekuyedzwa kwemunda uye kusimbiswa.Paunenge uchishanda, iva nechokwadi chekutarisa bhuku rema process parameter rakapihwa nemugadziri wemidziyo, uye worigadzirisa pamwe chete nemhedzisiro chaiyo yekucheka.