|Academic Staff in charge||Prof. Chi Tat KWOK; Prof. Kin Ho LO|
|Technician||Po Kee WONG; Hang Cheong WONG|
|Telephone||(853) 8822-8057, 4292|
Lasers have been applied extensively in industry. They are usually used for cutting, welding, drilling, surface modification, etc. The purposes of this laboratory are
- To allow the students to have some ideas of laser technology in manufacturing processes.
- To provide facilities for students’ final projects and MSc and PhD students’ theses.
- To serve local industries.
1. Corrosion testers
The laser system consists of the fiber-couple diode laser module (Laserline LDM 1000-1000) and the CNC XYZ table. Diode laser with near infra wavelength provides high energy absorptivity to metals.
|Central wavelength||900 – 990 nm|
|Maximum power||2300 W|
|Beam quality||110 mm rad|
|Optical fiber||1000 μm|
Steps for laser processing:
- Design scanning sequences with the aid of drawing software, such as AutoCAD and Corel Draw.
- The drawing is converted to a CNC program that can be recognized by the controller of the CNC machine.
- Adjust the desired power level and scanning speed of the laser machine.
The laser beam is transmitted through an optical fiber. The high energy beam acts as a heat source and is controlled by the CNC machine for processing.
Applications of laser:
- Laser transformation hardening
- Laser surface alloying
- Laser welding
- Laser cutting
|EMEB351||Advanced Materials for Engineers|
|EMEB355||Corrosion, Wear and Degradation of Materials|
|ELME702||Physics of Materials|
|ELME717||Special Topics in Manufacturing I: Laser Materials Processing|
|ELME718||Special Topics in Manufacturing II : Surface Engineering|