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Coherent – Rofin – News

 

Rofin-Baasel UK

http://www.rofin.co.uk Laser marking and laser welding solutions
Tue, 26 Sep 2017 15:16:05 +0000
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New features on the Coherent-ROFIN HighLight FL fibre laser
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Fri, 15 Sep 2017 15:08:00 +0000

New features on the Coherent-ROFIN HighLight FL fibre laser


Coherent-ROFIN HighLight FL fibre laser features a high brightness, high power with output ranging from 500 W to 10,000 W. With a modular and robust design the laser has been set up for optimum efficiency, Flexibility and reliability across industrial sectors such as cutting, welding and surface treatment. The HighLight FL lasers incorporate technical innovations with field-proven reliability into solutions that can be optimally tailored to enable higher throughput in many materials processing applications. All lasers of this model range are equipped with the Coherent-ROFIN Control Unit (RCU), which offers numerous monitoring tasks and e-service capability. A scanner processing solution package is optionally available enabling simple implementation of scanner-based applications. The “compact” version with a spliced fibre and a small cabinet is ideally suited for easy integration into existing systems. One of the latest advancements in the new HighLight FL3000C with 3 kW output power from just one fibre laser module allowing for utmost compactness in this power class. The “standard” version offers a separated enclosure for beam management. Up to four fibres can be used with time or energy sharing including two channel interlocks per output and a multi-station fieldbus interface. By using different diameters of the process fibres, the beam quality can be ideally adapted to the specific application task. ]]>
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Check out the Desktop & EasyJewel Lasers at IJL
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Tue, 15 Aug 2017 10:29:56 +0000

Check out the Desktop & EasyJewel Lasers at IJL


International Jewellery London (IJL) from 3 to 5 September Coherent-ROFIN will be showing the latest systems for laser welding and laser engraving or etching on Stand J39. There will be some year-end deals to be done for orders placed at the show requiring delivery before the end of September. Laser welding is an affordable addition to the equipment in the jeweller’s workshop. Advantages are especially notable in platinum, where laser welded ring sizes are rapid, strong and invisible. Also, the laser is an ideal tool to fill any porosity in platinum castings, join fine filigree parts with precision or repair antiques sensitively without loss of patina.

Coherent-ROFIN Desktop – the manual laser welder for jewellery

The Coherent-ROFIN Desktop is compact and affordable, offering a reliable output even when pushed to the limits of power output continuously in a hot workshop. Engineered and manufactured in Germany, the system is field-proven and backed up by local service from Daventry, UK. For internal or external engraving of rings, the EasyJewel with the Ring Marking Module (RMM) inside allows perfect results assisted by a camera to preview the location of the engraving – avoiding any clash with existing hallmarks, stones or other features. The RMM is easily removed to allow any other shaped items to be etched or engraved with ease.

Coherent-ROFIN EasyJewel – Precise ring engraving

Experts from Coherent-ROFIN will be on hand to explain, demonstrate and answer questions on the systems on display. Try before you buy and see how easily laser processing can be introduced to your workshop. Register now for IJL or click the button below to find out more about Coherent-ROFIN solutions for the jewellery industry. Find out more about rofin lasers for jewellery ]]>
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Coherent HyperRapid NX 1064 Speeds Display Glass Cutting
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Fri, 07 Jul 2017 14:05:08 +0000

Coherent HyperRapid NX 1064 Speeds Display Glass Cutting


SmartCleave enables high speed cutting of curves and insets into glass, e.g. used for substrates of displays.

Glass is used as a substrate in the touchscreen displays of virtually every manufacturers’ smartphones and tablet computers. The glass for these devices is invariably supplied in large sheets, which is processed and then eventually cut down to form individual displays. Unfortunately, the traditional mechanical methods for cutting glass have drawbacks, particularly for the very thin substrates employed in flat panel displays (FPDs). These include the creation of microcracks in the material, the introduction of mechanical stress into the glass, the production of small chips and debris, and the formation of an edge that is not necessarily perpendicular to the glass surface. Post-processing steps to grind or polish the cut surface may be required to correct these deficiencies, as well as a cleaning step to remove debris.   Non-contact laser cutting largely eliminates these problems. In particular, the use of an ultrashort pulse (USP) laser in a process called filamentation cutting delivers an unmatched combination of high speed, operational flexibility and superior cut quality. Filamentation cutting works because the high laser peak powers of a USP laser produce self-focusing of the beam due to the nonlinear Kerr optical effect. This self-focusing further increases power density, until, at a certain threshold, a low-density plasma is created in the glass. This plasma lowers the glass refractive index in the centre of the beam path and causes the beam to defocus. This focusing/defocusing effect can be balanced to repeat periodically and form a stable filament which extends over several millimetres in depth within an optically transparent material. In order to produce a cut, these laser-generated filaments are produced close to each other by a relative movement of the workpiece with respect to the laser beam. Cutting speeds of 100 mm/s to 2000 mm/s can be achieved, depending on the material thickness and the desired cut geometry. With chemically or thermally strengthened glass, internal stress within the part provides for automatic separation of outer contours (as opposed to cutouts), without an additional step. For non-strengthened transparent materials, such as soda lime, borosilicate and aluminosilicate glass, as well as sapphire, a separation step must follow filamentation. The Coherent | Rofin embodiment of the filamentation technology is called SmartCleave. It pairs process technology acquired, and further developed by Rofin, together with advanced industrial ultrafast HyperRapid NX series lasers from Coherent. The resulting process enables high speed cutting of arbitrary shapes, including curves, freeform cuts and insets, without edge taper, in glass and other transparent and brittle materials from 0.05 mm to 10 mm thickness. SmartCleave delivers smooth surfaces, with a Ra of less than 1 μm, which are essentially free of chips and debris. This yields superior bend strength in the cut parts compared to parts generated by mechanical processes. SmartCleave glass cutting is typically accomplished using HyperRapid NX lasers operating at 1064 nm. These products offer a unique combination of output power, reliability and operational flexibility, including burst mode and pulse on demand operation. The result is an unmatched ability to effectively implement filamentation cutting in a specific application. We supply products to enable SmartCleave processing in a variety of configurations. This can be simply the HyperRapid NX laser source and SmartCleave process recipe. But, we also provide sub-systems, which integrate a laser with beam delivery optics and control electronics. These can also be configured as a so-called “black box” subsystem, in which the particular configuration to enable and optimise a specific process has already been developed and programmed. Finally, Coherent | Rofin can deliver complete, turnkey systems for SmartCleave processing, which are ready for use in a production setting. ]]>
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Technology Days, Hatton Garden, June 2017
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Wed, 10 May 2017 14:21:13 +0000

Technology Days, Hatton Garden, June 2017


th June, where guests have the chance to speak to applications experts about how Coherent Rofin products can provide unique solutions for welding, cutting and marking of precious metals, and try out the compact welding and engraving systems to see exactly how the process works in the jewellery workshop. During the day our compact table top systems, the EasyJewel for engraving and the Desktop for welding as well as the free-standing Performance laser welder with up 100 W output power and 50 Hz pulsing, will be available for hands-on demonstrations.   The Evening Seminar (free admission for registered delegates) will take place on: 6th June, at 6:30 pm. Register here: http://bit.ly/techseminar06JUN2017 The Technology Open-day (free admission) will take place on: 7th June from 10 am – 5 pm. Register here: http://bit.ly/techday07JUN2017 Location: Goldsmiths’ Centre, 42 Britton Street, London, EC1M 5AD   ]]>
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HND Jewellery Students Rewarded for Laser Welding Innovation
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Wed, 22 Feb 2017 21:13:16 +0000

HND Jewellery Students Rewarded for Laser Welding Innovation


BCU_1_Parry_photo_laser_welded_brooch_lores

Image: The winning design brooch by Sarah Parry, HND student at BCU School of Jewellery