{"id":4686,"date":"2025-03-10T19:52:23","date_gmt":"2025-03-11T02:52:23","guid":{"rendered":"https:\/\/www.leadhan.com\/?p=4686"},"modified":"2025-03-27T00:09:58","modified_gmt":"2025-03-27T07:09:58","slug":"what-we-need-to-know-about-laser-cutting-machines","status":"publish","type":"post","link":"https:\/\/www.leadhan.com\/pt\/o-que-e-preciso-saber-sobre-as-maquinas-de-corte-a-laser\/","title":{"rendered":"O que \u00e9 preciso saber sobre as m\u00e1quinas de corte a laser"},"content":{"rendered":"

As m\u00e1quinas-ferramentas de processamento a laser aplicam o princ\u00edpio do corte a laser para cortar chapas nas formas desejadas. A m\u00e1quina de corte a laser<\/a> O laser \u00e9 constitu\u00eddo essencialmente por duas partes: a mesa de trabalho CNC e a m\u00e1quina-ferramenta. O feixe de laser liberta energia quando irradia a superf\u00edcie da pe\u00e7a de trabalho, derretendo o material para conseguir o corte.<\/p>

\"m\u00e1quina<\/figure>

I. Vantagens da <\/strong>L<\/strong>aser <\/strong>C<\/strong>de corte<\/strong><\/strong><\/h2>

As vantagens das m\u00e1quinas de corte a laser permitem a sua ampla aplica\u00e7\u00e3o em v\u00e1rios dom\u00ednios.<\/p>

1. Elevado <\/strong>E<\/strong>efici\u00eancia<\/strong><\/strong><\/h3>

As m\u00e1quinas de corte a laser equipam v\u00e1rias bancadas de trabalho CNC, permitindo um controlo CNC total do processo de corte. Os operadores podem alterar o programa CNC para cortar pe\u00e7as de diferentes formas, incluindo desenhos bidimensionais e tridimensionais.<\/p>

2. R\u00e1pido <\/strong>S<\/strong>mijado<\/strong><\/strong><\/h3>

Um laser de 1200 W corta a\u00e7o macio de 2 mm a 600 cm\/min e polipropileno de 5 mm a 1200 cm\/min. Os operadores n\u00e3o precisam de fixar o material durante o corte.<\/p>

3. Bom <\/strong>C<\/strong>de corte <\/strong>Q<\/strong>ualidade<\/strong><\/strong><\/h3>

A. A vanguarda da m\u00e1quina de corte por laser de chapa<\/a>\u00a0\u00e9 estreita, os dois lados da fenda s\u00e3o paralelos e perpendiculares \u00e0 superf\u00edcie, e a precis\u00e3o dimensional das pe\u00e7as cortadas pode atingir \u00b10,05mm.<\/p>

B. O corte a laser produz uma superf\u00edcie de corte lisa e bonita com uma rugosidade de apenas dezenas de microns. Pode servir como processo final, eliminando a necessidade de processamento mec\u00e2nico, e permite que os utilizadores utilizem diretamente as pe\u00e7as.<\/p>

C. O corte a laser produz uma zona afetada pelo calor muito pequena, deixando o desempenho do material perto da fenda praticamente inalterado. Tamb\u00e9m minimiza a deforma\u00e7\u00e3o da pe\u00e7a de trabalho, assegura uma elevada precis\u00e3o de corte, cria uma boa forma geom\u00e9trica para a fenda e forma uma sec\u00e7\u00e3o transversal retangular relativamente regular.<\/p>

4. N\u00e3o<\/strong>C<\/strong>contacto <\/strong>C<\/strong>de corte<\/strong><\/strong><\/h3>

A tecnologia de corte a laser, como um m\u00e9todo de processamento eficiente e preciso, demonstra a sua principal vantagem atrav\u00e9s das carater\u00edsticas de processamento sem contacto. Um feixe de laser de alta energia da pistola de corte processa a pe\u00e7a de trabalho, eliminando o contacto direto entre a ferramenta e a pe\u00e7a de trabalho que ocorre no corte mec\u00e2nico tradicional. Esta abordagem reduz significativamente o desgaste da ferramenta e aumenta a vida \u00fatil do equipamento. Os operadores ajustam de forma flex\u00edvel a pot\u00eancia de sa\u00edda do laser, a frequ\u00eancia, a posi\u00e7\u00e3o de focagem e outros par\u00e2metros com base nas carater\u00edsticas do material, espessura e forma das diferentes pe\u00e7as de trabalho para obter um corte preciso.<\/p>

Al\u00e9m disso, o processo de corte a laser apresenta carater\u00edsticas de baixo ru\u00eddo e baixa vibra\u00e7\u00e3o, que n\u00e3o s\u00f3 melhoram o ambiente de trabalho como tamb\u00e9m reduzem o impacto mec\u00e2nico na estrutura do equipamento. A utiliza\u00e7\u00e3o de um sistema de processamento fechado controla eficazmente as poeiras e os gases nocivos gerados durante o processo de corte, alcan\u00e7ando um processamento ecol\u00f3gico de baixa polui\u00e7\u00e3o. Esta abordagem est\u00e1 em conformidade com os requisitos da ind\u00fastria transformadora moderna em termos de prote\u00e7\u00e3o ambiental e desenvolvimento sustent\u00e1vel.<\/p>

II. Princ\u00edpio de corte<\/strong><\/strong><\/h2>

O princ\u00edpio do corte a laser concentra a elevada energia do laser no material para o derreter ou vaporizar, conseguindo assim o corte. Este m\u00e9todo de processamento sem contacto oferece alta precis\u00e3o, alta velocidade e forte adaptabilidade do material, e as ind\u00fastrias utilizam-no amplamente em v\u00e1rios campos de fabrico e processamento de materiais.<\/p>

1. Laser <\/strong>G<\/strong>enerador <\/strong>G<\/strong>enerados <\/strong>L<\/strong>aser <\/strong>B<\/strong>feixe<\/strong><\/strong><\/h3>

O gerador de laser da m\u00e1quina de corte a laser de chapas gera um feixe de laser de alta energia e alta concentra\u00e7\u00e3o. Os tipos de laser mais utilizados s\u00e3o o laser de CO2, o laser de fibra e o laser s\u00f3lido.<\/p>

2. Laser <\/strong>B<\/strong>feixe <\/strong>G<\/strong>orienta\u00e7\u00e3o e <\/strong>F<\/strong>focaliza\u00e7\u00e3o<\/strong><\/strong><\/h3>

Os dispositivos \u00f3pticos orientam e focam o feixe laser num ponto de pequeno di\u00e2metro. As lentes ou os espelhos controlam normalmente a trajet\u00f3ria do feixe laser e focam-no num ponto mais pequeno.<\/p>

3. Material <\/strong>A<\/strong>bsorbs <\/strong>L<\/strong>aser <\/strong>E<\/strong>nergia<\/strong><\/strong><\/h3>

O material absorve a energia do laser quando o feixe laser atinge a sua superf\u00edcie. Os diferentes materiais variam nas suas taxas de absor\u00e7\u00e3o e alguns materiais met\u00e1licos absorvem os lasers a uma taxa mais elevada.<\/p>

4. Aquecimento, <\/strong>M<\/strong>elting ou <\/strong>V<\/strong>aporiza\u00e7\u00e3o de <\/strong>M<\/strong>materiais<\/strong><\/strong><\/h3>

A elevada densidade de energia do laser aquece rapidamente o material at\u00e9 \u00e0 temperatura de fus\u00e3o ou vaporiza\u00e7\u00e3o. O material consome muita energia t\u00e9rmica durante a fus\u00e3o ou vaporiza\u00e7\u00e3o para conseguir o corte.<\/p>

5. Auxiliar <\/strong>G<\/strong>como <\/strong>I<\/strong>njec\u00e7\u00e3o<\/strong><\/strong><\/h3>

Os operadores injectam frequentemente g\u00e1s auxiliar (como azoto, oxig\u00e9nio ou g\u00e1s inerte) atrav\u00e9s do bocal durante o processo de corte para proteger a \u00e1rea de corte a laser, soprar o material derretido e acelerar o processo de corte.<\/p>

6. Movimento <\/strong>C<\/strong>controlo <\/strong>S<\/strong>sistema<\/strong><\/strong><\/h3>

Um sistema de controlo de movimento equipa normalmente as m\u00e1quinas de corte a laser para chapas de a\u00e7o para controlar o percurso de movimento da cabe\u00e7a da m\u00e1quina de corte a laser na superf\u00edcie do material. Um programa de computador permite o corte de v\u00e1rias formas complexas.<\/p>

Conclus\u00e3o<\/strong><\/strong><\/h2>

A m\u00e1quina de corte a laser \u00e9 amplamente utilizada em v\u00e1rias ind\u00fastrias, como processamento de metal, fabrica\u00e7\u00e3o de autom\u00f3veis, componentes electr\u00f3nicos, aeroespacial, etc. Pode atingir alta precis\u00e3o e corte de alta velocidade, e \u00e9 adequado para pe\u00e7as de trabalho de diferentes formas e tamanhos. M\u00e1quina de corte a laser para chapa de a\u00e7o<\/a> \u00e9 um equipamento de processamento avan\u00e7ado. Compreender o seu princ\u00edpio de funcionamento, as carater\u00edsticas do laser, os materiais aplic\u00e1veis, os tipos, os par\u00e2metros de corte e os campos de aplica\u00e7\u00e3o \u00e9 essencial para dominar a sua utiliza\u00e7\u00e3o e otimizar o processo de processamento.<\/p>

<\/p>","protected":false},"excerpt":{"rendered":"

Laser processing machine tools apply the principle of laser cutting to cut plates into desired shapes. A laser cutting machine mainly 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