Quality LGAC systems a must for your laser business not only for product quality but personnel safety.
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Quality LGAC systems a must for your laser business not only for product quality but personnel safety.

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To better understand the need for the LGAC system it helps to understand what happens during laser processing and how it can affect your workers?

When a laser beam is applied to the surface of a material; high temperatures that are generated, cause the air near to the contact point to expand generally back in the direction of the lens. The laser beam causes incineration, vaporization, melting and softening of the material. Rapidly expanding gases pickup and carry the removable particles and droplets at relatively high velocities away from the product material. The contaminants released consist of a wide variety of gases, in some cases noxious such as benzene or phosgene. They also consist of products of combustion including possible oxides of the base material. Stainless steel, for example, releases chromium and nickel, which can cause chronic toxicological effects such as liver/kidney disease and cancer.

Production Quality Problems Caused by LGACs

During laser processing airborne particles also cause problems for the laser if they are allowed to be deposited on the lens or remain in the processing area. These deposits cause beam attenuation and, therefore, reject rates to increase. Deposition of particulates within the laser enclosure can result in contamination of the product and also the need for regular cleaning of associated operating equipment.

Which System Is Right For You?

The range of materials that are processed with lasers is wide and varied so any purification system must be flexible enough to cope with different volumes and types of contaminants. The position and design of the extraction nozzle or enclosure is a prime consideration if effective extraction is to be achieved. Oval or round nozzles should generally be used in preference to thin, slot varieties. Air flow rates of between 80 and 5000 m3/hr will ensure the correct level of extraction from most laser processes. The correct rate required depends on many interacting factors and should, therefore, only be specified by experienced professionals like Jorlink. The only practical method of overcoming the above problems is to remove these airborne contaminants as quickly and completely as possible with precision fume extraction and purification systems like Purex. Jorlink professionals can explore the many aspects of LGAC removal when you contact them. 

Coming soon we’ll explore how to prolong the life of your laser as well as why Purex systems are industry leaders in LGAC removal.

LGAC removal systems are a must as lasers become increasingly used to mark, etch, cut and weld a wide variety of materials in automotive plants, packaging lines, medical procedures, aerospace manufacture and many others. Lasers offer an alternative to traditional processing methods and deliver excellent results in terms of precision machining time, flexibility and performance. John Young of Purex International points out that to comply with International Health and Safety Regulations, fume extraction is required for most laser operations in order to protect personnel and to enhance the performance of the laser system itself. It is, therefore, of paramount importance that the correct fume extraction system is chosen. This is where Jorlink and Purex International can help. Putting your laser business together with the correct LGAC removal system is essential to both yours and Jorlink’s success.

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