Jklasrs.e book


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JK Lasers, laser manufacturer, offer innovative Fiber Laser products, leading software solutions, patented technology and an expert in-house applications team to deliver the right solution every time.

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Jklasrs.e book

  1. 1. 2013 A GSI Group Company Industrial Lasers Weld, Cut & DrillLaser Cutting A global developer and manufacturer of industrial lasers, JK Lasers provides innovative laser processing solutions for the medical device, aerospace, automotive, electronics and semiconductor industries. Drawing on over 40 years experience, we help customers select the most suitable lasers for their welding, cutting and drilling requirements. LaserFiber Lasers Welding IndustrialLaser Drilling Laser Laser Manufacturer JK Lasers 1/1/2013
  2. 2. JK Lasers - A GSI Group Company 2About JK LasersA global developer and manufacturer of industrial lasers, JK Lasers provides innovative laserprocessing solutions for the medical device, aerospace, automotive, electronics and semiconductorindustries. Drawing on over 40 years experience, we help customers select the most suitablelasers for their welding, cutting and drilling requirements.Innovative ProductsOur reliable, robust product range includes:  JK™ Fiber Lasers;  JK™ high-power solid state Nd:YAG CW and pulsed lasers;  eCO2 economical low to mid-power CO2 lasers;  Process Tools.Software SolutionsWe aim to deliver a single integrated solution comprising both hardware and software. With thelaser, beam delivery system, process tools and control unit all developed and produced by JK Lasers,integration problems are eliminated.Manufacturers have full control of their laser using the JK™ Laser Graphical User Interface - LaserView™ SE or FiberView. Features include:  Integrated process vision when used with CCTV equipped process tools;  Windows-style help menu;  Pulse stability measurement;  Simple integration into work processing systemsPatented TechnologyWhen welding or drilling, 80 - 90% of the laser’s light can be reflected onto the fibers, potentiallycausing damage. Our patented back reflection technology allows the user to process highly reflectivematerials at full power without back reflection harming the equipment or fiber optics.Our unique Luminator™ technology channels reflect light away from the fibers via a capillary tube.
  3. 3. JK Lasers - A GSI Group Company 3Table of Content 1. JK Lasers Spearheads £1.2m World-Class Research Project 2. JK Lasers Ships its First 1kW Fiber Laser 3 JK Lasers Opens New Offices in Germany 4 Hermetic Welds for Microwave Packages, Sensors and RelaysJK Lasers, part of the GSI Group, is to launch a £1.2m collaborative research and developmentproject in partnership with the LPA Group at Heriot-Watt University, PowerPhotonic Ltd. andCranfield University, thanks to investment from the Technology Strategy Board.As lead partner in the High Efficiency Laser Processing Systems (HELPSYS) Project, GSI is aiming todevelop fibre coupled diode laser sources with beam qualities good enough to be applicable to abroad range of mainstream applications. Specifically this will include a significant increase in theefficiency of current laser welding processes to the point where they are more efficient than evenconventional MIG or other techniques.Dr Mark Greenwood, Technical Director for JK Lasers, said: “Diode system beam quality has so farlimited the accessible market to niche applications such as soldering, plastic welding, hardening andcladding. The significant beam quality improvements proposed by this project would enable diodelaser systems to enter many of the markets dominated by incumbent technologies such as HighPower CO2 and Lamp Pumped Nd:YAG lasers.”Commenting on the Technology Strategy Boards investment in the project, their Technologist forElectronics, Photonics and Electrical Systems, Mike Biddle, said: "The Technology Strategy Boardaims to stimulate the development and deployment of technologies which offer major businessopportunities for the UK. The advanced laser processing system that will be developed through thisproject has the potential to be exploited globally. We are very pleased to have had the opportunityto invest in this world class research and development."Benefiting UK IndustryLaser processing, specifically laser cutting and laser welding, is widely used across many industriesincluding medical, automotive, electronics packaging and aerospace. The technology developed bythe HELPSYS project will be particularly relevant to high power applications in intensive productionenvironments where ultimate process efficacy and total efficiency are important – such asautomotive production, which requires significant quantities of high quality welds in large volumes.In order to receive the investment, awarded under the Technology Strategy Board’s collaborativeresearch and development programme, the project partners must prove the UK’s capacity todevelop and exploit the technology, the size of the market opportunity and the commercial benefitsand sustainability of the proposed technology.
  4. 4. JK Lasers - A GSI Group Company 4Dr Greenwood commented: “The actual benefits in terms of manufacturing costs and energyefficiency achievable through exploitation of this technology will differ from case to case and thiswill dictate the speed at which the technology penetrates these additional industries.”He added: “We are confident that this project will directly benefit the laser and industrial processingindustry, by developing new technologies for high power diode lasers and their use in new highefficiency laser welding processes, increasing the overall efficiency and achieving challenging costand volume manufacturing goals.”Partnering for InnovationIn line with GSI’s tradition of utilising its applications expertise to further laser technologyinnovation, the project will exploit this and the key technologies held by the project partners toachieve new benchmarks for the development of industrial lasers.For example, the project incorporates plans for base modules which will integrate new capabilities atthe diode laser chip level, innovative mounting and cooling configurations including new multi-layerplanar ceramic technology, utilisation of new beam correction technology, and novel multi-beam tooptical fibre coupling techniques.Url: http://www.jklasers.com/jk-lasers-ships-its-first-1kw-fiber-laserJK Lasers Ships its First 1kW Fiber LaserJK Lasers has shipped the first of its newly launched 1kW fiber lasers. The JK1000FL is a highlyversatile industrial laser, offering many advantages over more traditional solid state lasers at thispower level.For today’s critical manufacturing processes, these benefits include vastly improved energyefficiency. The JK1000FL’s time-sharing capability maximises productivity by eliminating laborioussystem load and unload times. This is particularly beneficial during the manufacture of large,complex parts where high throughput is needed despite significant jigging and fit-up times.In addition, its energy-sharing feature can help avoid the distortion of sensitive, high tolerancecomponents by simultaneously laser welding onto multiple locations on one part. Examples of thisinclude laser welding lids onto canisters and gears onto shafts.The JK1000FL can also be used with JK Lasers’ bespoke, field-proven range of process tools, offering‘plug and play’ capability and back reflection protection.Dr Mark Richmond, Product Manager for JK Lasers, said: “The JK1000FL is an innovative fiber laserthat offers unrivalled levels of power and control for industrial applications.
  5. 5. JK Lasers - A GSI Group Company 5“Its ability to help accelerate manufacturing processes without compromising quality is a highlydesirable feature in today’s competitive marketplace, which is why we have seen strong interest inthe JK1000FL from day one.”The JK1000FL will be on display at Italy’s leading industrial laser exhibition between the 17 and 19 ofNovember 2011. Visit booth A14 (Padiglione 1) at EXPOLaser, Piacenza, Italy, to discover the manyways that the JK1000FL and JK Lasers’ other products can enhance a wide range of industrialprocesses.Url: http://www.jklasers.com/jk-lasers-opens-new-offices-in-germanyJK Lasers Opens New Offices in GermanyJK Lasers, a global developer and manufacturer of industrial lasers, has opened new sales offices inGermany as part of plans to grow the business.The new sales offices, based in Munich and close to Hamburg, complement JK Lasers’ existingsupport network. Providing specialist advice and technical support at a local level, the strategiclocation of these premises will help JK Lasers serve other German-speaking countries.Mark Greenwood, General Manager for JK Lasers, said: “JK Lasers plans to expand in Germanybecause it represents an important market for us. The country accounts for a large percentage of theworldwide photonics trade and is home to leading manufacturers who could benefit from ourproducts and services.”JK Lasers, which is part of the GSI Group, offers a high performance range of Watt to kiloWatt fiberlasers, Nd:YAG lasers and process tools, which are designed to operate 24 hours a day, seven days aweek.A new range of powerful kiloWatt class fiber lasers will be added to the company’s portfolio laterthis year. Easy to use, with next to no maintenance or set up times, JK Fiber Lasers can simplify themost demanding laser welding, laser cutting and drilling requirements.For more information, email sales@jklasers.com or call +44 (0)1788 517800.http://www.jklasers.com/hermetic-welds-for-microwave-packages-sensors-and-relaysHermetic Welds for Microwave Packages, Sensors and RelaysLasers produce hermetic seals, preventing contaminants reaching sensitive circuits and trapping highquality inert atmosphere inside the package.Delivering very low heat, laser welds can be located close to polymer seals, glass-to-metal seals,soldered components and electronic circuits.
  6. 6. JK Lasers - A GSI Group Company 6Microwave PackagesIn many applications the alloy of choice for microwave packages is aluminum. It is easy to machine,lightweight and possesses the necessary electrical and thermal properties.A 4047 alloy lid is laser welded to a 6061-T6 alloy base with a butt, lap or fillet joint. The 12% silicon-aluminum alloy 4047 can be fusion welded to the 6061 without cracking for a strong hermetic seal.Unlike other electronic devices, the package around the active elements form part of the microwavecircuit. As most microwave circuits involve expensive radar or communication systems, very reliablehermetic seals and high yields are needed.The packaging must also be robust and capable of being opened and reworked when needed. Forrework, an end mill can machine through the laser weld. Once repaired, another lid can be weldedonto it. The number of repairs is virtually unlimited.In some instances laser welding is required through the lid into the dividing labyrinth walls to isolatecertain parts of the circuit.Pulsed Nd:YAG lasers are the best choice for microwave package sealing. Their high peak powers andlow heat input can handle all the different alloys and create a very stable process while maintainingdeep penetrations.Fiber optic beam delivery is most common for these parts because of the consistent focus spotsize and top-hat energy distribution which helps with fillet and butt joints to fill any gaps. It alsoachieves a good metallurgical mixing of alloys.Laser Welding speeds are generally 150-300mm/min for aluminum alloys and up to five times fasterthan those rates for iron alloys. If needed, weld penetrations of over 1.5mm are possible.RelaysThe mechanical contact connections used in relay units can be fouled by debris or create potentiallyexplosive sparks. To protect against this, hermetic seals are used in their production.These units use glass-to-metal seals as feed-throughs that are very close to the seam. Too much heatand the glass will crack. With low heat input, lasers successfully assemble the relay contacts usingspot welds, before hermetically sealing the header onto the can with a seam weld.Stainless steels are typically used for the can, but other iron alloys can be used depending on theirmagnetic properties. The header is often manufactured out of a cupro-nickel or Kovar material tomatch the glass-to-metal seals.
  7. 7. JK Lasers - A GSI Group Company 7The relay contact components can vary a great deal, depending on their electronic and wearproperties. Weld penetrations tend to be low (around 100μm - 250μm) to ensure minimal heatinput.Pulsed Nd:YAG lasers produce the necessary pulse energy and discrete pulses for spot welding relaycomponents. They can also produce the seam weld around the header. For small packages a galvomirror system can be used to move the beam around the part.SensorsSensors incorporate sensitive electrical and mechanical transducers that must be protected withhermetic seals.Integration of a laser into a sensor welding line is simple, with minimal control requirements, arobust process window and virtually no consumables or adjustments required compared to micro-tig, resistance welding or brazing.Time-share multiplexing can direct the output from one laser to multiple workstations to make bestuse of the laser system. The laser welding parameters can be changed faster than the 50msecswitching time between fibers. CCTVthrough-the-lens viewing can also be used to align and monitorthe laser beam.For very high throughput and low heat input the CW and Super Modulated CW lasers produce thehighest welding rates at the lowest cost.For very small devices where heat input is critical or where the alloys are more reflective (likealuminium or gold plated parts) a pulsed Nd:YAG laser is often the best choice. It possesses the peakpower to process reflective materials and can weld to deep penetrations at low average power.