Cara tradisional industri reresik utamane kalebu banyu tekanan tinggi, reagen kimia, gelombang ultrasonik, lan polesan mekanik. Nanging, cara pembersihan kasebut duwe masalah kayata karusakan ing landasan, lingkungan kerja sing kurang apik, polusi, reresik sebagean, lan biaya pembersihan sing dhuwur. Kanthi intensitas polusi lingkungan, para sarjana saka macem-macem negara aktif ngirit energi, teknologi lingkungan lan teknologi pembersihan anyar sing efisien. Amarga reresik laser teknologi duwe macem-macem keuntungan kayata kerusakan kurang saka bahan substrat, akurasi pembersihan sing dhuwur, emisi nol lan ora ana polusi, mula mboko sithik lan disenengi para akademi lan industri. Ora diragukan manawa aplikasi teknologi pembersihan laser kanggo ngresiki rereget ing permukaan logam nduweni prospek sing wiyar.
Sejarah pangembangan lan status teknologi pembersihan laser saiki
In the 1960s, the famous physicist Schawlow first proposed the concept of laser cleaning, and then applied the technology to the repair and maintenance of ancient books. Laser cleaning has a wide range of decontamination, from thick rust layers to fine particles on the surface of objects, including the cleaning of cultural relics, the removal of rubber dirt on the surface of tire molds, the removal of silicone oil contaminants on the surface of gold films, and the microelectronics industry. High precision cleaning. Laser cleaning technology really began in 2004, and began to invest a lot of manpower and material resources to strengthen the research on laser cleaning technology. In the past decade, with the development of advanced lasers, from inefficient and bulky carbon dioxide lasers to light and compact fiber lasers; from continuous output lasers to short pulse lasers with nanoseconds or even picoseconds and femtoseconds; from visible light output To the output of long-wave infrared light and short-wave ultraviolet light... lasers have developed by leaps and bounds in terms of energy output, wavelength range, or laser quality and energy conversion efficiency. The development of lasers has naturally promoted the rapid development of laser cleaning technology. Laser cleaning technology has achieved fruitful results in theory and application.
Prinsip teknologi pembersihan laser
Proses reresik laser pulsed gumantung saka karakteristik pulsa cahya sing diasilake dening laser lan adhedhasar reaksi fotofisika sing disebabake interaksi ing antarane sinar lampu intensitas tinggi, laser denyut pintas lan lapisan kontaminasi. Prinsip fisik bisa diringkesake kaya ing ngisor iki (Gambar 1)
A) Rasuk sing dipancarkan laser diserep lapisan polusi ing permukaan sing bakal diobati;
B) Penyerapan energi gedhe mbentuk plasma ngembang sing cepet (gas sing ora stabil banget), sing ngasilake gelombang kejut;
C) Gelombang kejut dadi polutan dadi fragmen lan diilangi;
D) Jembarake pulsa cahya kudu cekak supaya ora klumpukan panas sing bisa ngrusak permukaan sing diobati;
(E) Eksperimen nuduhake yen ana oksida ing permukaan logam, plasma digawe ing permukaan logam.
Plasma mung diasilake nalika kapadhetan energi ana ing ndhuwur ambang, sing gumantung saka lapisan sing kontaminasi utawa lapisan oksida dibuang. Efek ambang iki penting banget kanggo ngresiki kanthi efektif nalika njamin keamanan materi substrat. Ana ambang nomer loro kanggo tampilan plasma. Yen kepadatan energi ngluwihi ambang iki, materi dhasar bakal dirusak. Kanggo nindakake reresik sing efektif ing premis njamin keamanan materi substrat, paramèter laser kudu diatur miturut kahanan kasebut, saengga kapadhetan energi saka denyut cahya tegas ing antarane rong ambang.
Wektu kirim: Jun-28-2020
