iConnectHub

Login/Register

WeChat

For more information, follow us on WeChat

Connect

For more information, contact us on WeChat

Email

You can contact us info@ringiertrade.com

Phone

Contact Us

86-21 6289-5533 x 269

Suggestions or Comments

86-20 2885 5256

Top

The latest evolution in laser welding

Source:Ringier Release Date:2011-07-14 878
Plastics & Rubber
Add to Favorites

 Automotive, medical and consumer products all profit from the transmission laser welding technique.

 

 Lasers are becoming increasingly popular for joining two components together because the technique is fast, reliable and inexpensive. Modern laser plastic welding boasts numerous benefits and goes well beyond the limits of traditional joining methods. Thanks to its specific advantages, it opens up completely new applications and markets.
Innovation, technical strength, and international presence are the defining characteristics of LPKF Laser & Electronics AG with its over 30 years of experience in drive and control technologies meeting the demand for technical excellence in industrial laser solutions. The company's LaserQuipment is an outstanding brand for efficient laser-welding systems.

Binding solutions
Laser welding relies on two types of polymers, transparent or absorbent. Most thermoplastics in their natural state are transparent at typical laser wavelengths. Additives, such as carbon, in the plastic change the proper ties so that they become absorbent. The absorbing surface converts the laser energy into heat.
In the transmission laser welding technique, a material transparent to the laser wavelength lies on top of an absorbent material. A clamping tool presses together the parts to be joined. The laser beam penetrates through the transparent component with minor energy loss and melts the surface of the absorbing material. Heat transfers through conduction to plasticise the adjacent surface of the transparent material. This process is precisely controlled and continuously monitored during laser welding to ensure a repeatable quality weld. After resolidification, the two parts at the joint have been reliably and cohesively bonded.
A defined pressure joins the materials together during the laser welding process. It is therefore essential that the technology works with complete reliability. Uniform clamping is vital for high process quality. Pressing the parts together is crucial for effective thermal transfer.

 

New applications and material combinations
High joint quality criteria bring the economic advantages of laser plastic welding into the spotlight. No other method simultaneously combines such a high degree of safety, cleanliness and speed – opening up completely new opportunities!
Laser plastic welding can easily handle complex three-dimensional designs. The beam head itself never touches the material. Even poorly accessible zones or thick layers can be safely joined. Other convincing features are the continuous development of new materials and a wide range of combination options. The process is so gentle, the LPKF LaserQuipment systems are ideal for components with sensitive surfaces.
The results of in-house research, and in-depth practical experience, are made available to a broad circle of users in the LPKF Application Centre. Highly qualified engineers help with the process planning; they provide advice on the selection of materials, and determine the best laser parameters. Finally, they jointly work with the clients to develop prototypes and create optimal clamping tools. The Application Centre then elaborates quality assurance processes, and trains the operatives. This ensures the economical and uncomplicated operation of this innovative laser joining technology. The centre also provides assistance with batch runs, helps out during production peaks, and produces small to medium-sized runs with internal lab systems.

Comprehensive machine capability
Two of the key advantages of LPKF welding systAlphabounce SD M

Add to Favorites
You May Like