718577789-ppt-on-laser-applicayion-in-industary.pptx

Laser apps in industry

1. G O V E R M E N T V I D A R B H I N S T I T U T E O F S C I E N C E A N D H U M A N I T I E S , A M A R A V A T I Department of physics and electronics seminar on Laser Application In Industry

2. Laser application in industry

3. Introduction M a t e r i a l i n t e r a c t i o n L a s e r C u tt i n g L a s e r W e l d i n g L a s e r D r i ll i n g L a s e r H a r d n e n i n g

4. when a laser beam is incident on metal the radiation is absorbed, and t h e m a t e r i a l h e a t u p Depending on the amount of absorbed energy and the interaction time, the material is melted or vapourize L a s e r I n t e r c a t i o n w i t h m a t e r i a l s once the surface of the material absorbes energy, the materail starts to m e l t a n d t h e n v a p o r i z e

5. Laser cutting is a technology that uses a high-powered laser to cut materials with precision. It's commonly used in industrial manufacturing, but it's also becoming more accessible for small businesses and hobbyists due to advancements in laser technology and affordability h o w i t g ene r a ll y w o r k s : Preparation: The design to be cut is created using computer-aided design (CAD) software. This design is then converted into instructions that the laser cutter can understand. Material Setup: The material to be cut is placed on the bed of the laser cutter. Different materials require different settings to achieve optimal cutting results. Laser Cutting: The laser cutter emits a concentrated beam of light energy, typically CO2 or fiber lasers, onto the surface of the material. The intense heat of the laser beam melts, burns, or vaporizes the material along the predetermined cutting path. The three main types of lasers used for cutting, are CO2, Nd-YAG (Neodymium Yttrium-Aluminum- Garnet) lasers, and fiber-optic lasers. They differ in the materials used to generate the laser beam. L a s e r c u tt i n g

6. l a s e r c u tt i n g

7. Laser welding is a technique that utilizes a highly concentrated beam of light energy, typically from a laser, to join materials together. It's widely used in various industries for its precision, speed, and versatility. h o w l a s e r w e l d i n g g ene r a ll y w o r k s A laser beam fall incident on the surfaces to be welded. the surface absorb a part of the laser radiation in ashort period of time and the material melts. this leads to welding in this process either, the surface of the material or the beam relative to each other Welding Process: When the laser beam strikes the material, it rapidly heats and melts the metal at the joint interface. The intense heat causes the materials to fuse together, forming a strong bond as they cool. The process can be performed in various modes, including conduction mode welding and keyhole welding, depending on the desired weld characteristics and material properties. a little bit of body text L A S E R W E LD I N G

8. w i t h l a s e r s , ve r y n a rr o w , p r e c i s e a n d a cc u r a t e w e ld i n g p o ss i bl e . there is no filler material required and hene contamination of the welded portion a v o i d e d a n d a l s o t h e i r i s n o s l a g f o r m a t i o n . high welding speeds, precise control over w e l d p a r a m e t e r s , a n d t h e a b i l i t y t o w e l d a w i d e r a n g e o f m a t e r i a l s a n d t h i c k n e ss e s . I t ' s c o mm o n l y u s e d i n i n d u s t r i es s u c h a s automotive manufacturing, aerospace, electronics, medical device fabrication, and j e w e l r y p r o d u c t i o n . L a s e r w e l d i n g a d v a n t a g e s

9. Laser Drilling Laser drilling is a manufacturing process that utilizes laser technology to create precise holes in various materials such as metals, plastics, ceramics, and c o m p o s i t e s . T h i s p r o c e s s i s w i d e l y u s e d i n i n d u s t r i e s s u c h a s a e r o s p a c e , automotive, electronics, medical devices, and more due to its accuracy, speed, and versatility. Drilling Process: The focused laser beam is directed onto the surface of the material at the desired location. As the beam interacts with the material, it rapidly heats and vaporizes or melts the material, creating a hole. The material is removed as either vapor or molten material, depending on the laser parameters and material properties

10. AD V A N T A G E S O F L A S E R D R I LL I N G material like gemstone,ceramic etc are hard and brittle in nature.it is extreamely difficult to drill hole in these material by any of the coventional method . laser is an excellent tool for such Drilling Process: The focused laser beam is directed onto the surface of the material at the desired location. As the beam interacts with the material, it rapidly heats and vaporizes or melts the material, creating a hole. The material is removed as either vapor or molten material, depending on the laser parameters and material properties operation. it is easy to drill hole having large hole depth to hole diametere ratio Since the drilling process is non-contact, there is minimal risk of tool wear or damage to the workpiece, resulting in longer tool life and reduced maintenance

11. metal drilling glass drilling

12. LASER HARDNENING 1. laser hardnening is a process, which has recentaly been developed with co2 laser. the late entry of laser into this field is partly due to the part that it required laser of very high power to perform heat treatment to it fullest potential Laser hardening, also known as laser surface hardening or laser heat treatment, is a process used to increase the hardness and wear resistance of the surface layer of metal components. It involves selectively heating the surface of the material with a laser beam to a high temperature, followed by rapid cooling, typically through conduction into the bulk material. This process alters the microstructure of the surface layer, resulting in increased hardness and improved mechanical properties.

13. how laser hardening generally works: As the laser beam interacts with the surface, it rapidly heats the material to temperatures above its transformation temperature (usually above the austenitizing temperature for steels). This causes the microstructure of the surface layer to transform, typically into a harder phase such as martensite. After heating, the surface layer is rapidly cooled, typically through conduction into the bulk material or by using an additional cooling method such as water or air quenching. The rapid cooling rate is essential for retaining the transformed microstructure and achieving the desired hardness. Laser hardening is a fast and efficient process, offering high precision and repeatability, which is particularly advantageous for high-volume production and complex geometries.

14. Overall, laser hardening is a highly effective surface treatment technique for enhancing the mechanical properties and performance of metal components, offering advantages in terms of precision, efficiency, and control over the hardening process. f e w o t he r l a s e r h a r d en i n g t e c n i q u e S h o c k h a r d e n i n g . S u r f a c e g l a z i n g S u r f a c e a ll o y i n g

15. T h an n n k k k y y o o o u u u ! ! !