Soldering

Home>Topics>Soldering
Refine Results
  1. All
  2. Product
  3. Company
  4. Online Articles
  5. Magazine Articles
  1. Selective soft laser soldering

    Daventry, U.K. – Using a laser for selective soldering operations allows the thermal energy required to be applied directly to the joint with no physical contact. In addition, the ability to focus the laser energy to a concise point means that the heat input area is localized and highly accurate. The narrow beam profile of the laser also enables soldering operations to be carried out in hard-to-reach areas, offering a significant advantage over conventional methods. Traditional soldering technologies can pose problems when applied to delicate or temperature-sensitive parts. A soldering iron requires direct mechanical contact and this can bring with it the risk of contamination in the joint. The size of the iron can make it difficult to gain easy access and there is little in the way of temperature control using this method. Reflow soldering techniques are not always appropriate due to the presence of adjacent parts or access to the specific joint area, and hot air principles pose a potential heat risk to surrounding components. Using the laser process, solder can be presented by an automated solder wire feed system or in the form of solder paste or pre-tinned contacts. Process control in laser soldering is achieved using a pyrometer, which also serves as a reliable quality monitor. This non-contact method of measuring the temperature of the soldering process enables a closed loop system to be created, balancing temperature ( Fig. 1 ) and laser power to provide consistent and predictable results.     Figure. 1. Chart shows the comparison of temperature control between an open loop and closed loop system. Diode lasers in solar cell production In addition to the many advantages that diode lasers bring to the electronic manufacturing sector, they also have all of the properties necessary for laser soldering and contacting on thin film solar cells . The solder joints, which can be achieved by using cw diode lasers, cover several square millimetres ( Fig. 2 ). This non-contact technology together with the accurate and highly localized thermal input limits the potential for thermal stress in the cell. Usually Si solar cells are interconnected to strings, which in turn are laminated into the modules. This process requires subsequent handling with additional equipment for these long and fragile strings. Figure 2. Laser soldered contacts on solar cell module. Using a laser and galvo-scanner combination, however, the string handling can be completely eliminated by soldering directly through the laminate layers without the need to move the optics or the cell. The typical composition for these modules is glass, polymerized ethylene vinyl acetate (EVA), tinned ribbons, solar cell, tinned ribbons and a transparent PVF (polyvinyl fluoride) back sheet. The front and rear sides of the PV module are transparent to laser radiation. Soldering can therefore be done either before or after lamination. With regard to peel force and contact resistance, the quality of the laser soldered joints exceeds that of other contacting technologies. The peel force is higher by a factor of 3, whereas the thermal resistance is only about 14% of the contact solder joint. DILAS , the diode laser company, is focused on delivering the most innovative technologies and advanced product solutions for the industrial market. Diode-based laser soldering is one example. For further information, please contact Dave MacLellan, sales manager, Micro Division, Rofin-Baasel UK Limited, sales@rofin-baasel.co.uk .      

    Online Articles

    Online Articles

    Tue, 7 Sep 2010

  2. Laser soldering addresses lead-free legislation

    As a consequence of the Removal of Hazardous Substances (RoHS) legislation, most products sold in the European Union (EU) after July 2006 will need to be lead-free in content.

    Magazine Articles

    Magazine Articles

    Thu, 1 Dec 2005

  3. Laser glass soldering

    Aachen, Germany--Precision products such as semiconductors, sensors, or optical and medical system components may contain highly sensitive electronic elements that must not come into contact with water, oxygen, and other elements and, therefore, have to be hermetically sealed.

    Online Articles

    Online Articles

    Fri, 12 Mar 2010

  4. A promising tool

    High-power diode lasers (HPDLs) have been applied in industry for several years. Apart from the pumping of solid-state lasers they are used in materials processing for welding, soldering , and heat treatment.

    Online Articles

    Online Articles

    Wed, 1 Aug 2007

  1. Fiber Coupled Diode Laser Modules

    Product

    Product

    Wed, 19 Jun 2013

  2. Diode laser

    Designed for heavy duty industrial needs like welding, soldering , or cutting, the 300W laser 9xx nm from Lumics GmbH is based on individual, hermetically sealed diodes, single emitter technology

    Online Articles

    Online Articles

    Wed, 8 Apr 2009

  3. II-VI HIGHYAG introduces consulting services for industrial laser applications

    II-VI HIGHYAG now offers application-specific consulting services, including for welding and cutting, in its own application laboratories.

    Online Articles

    Online Articles

    Thu, 14 Jul 2016

  4. Laser joining photovoltaic modules

    With new laser sources and integrated process control systems, optimized thermal management of the interconnection process can be provided, necessary for future thinner solar cells.

    Magazine Articles

    Magazine Articles

    Sun, 1 Jun 2008

  5. Valoe receives order for a solar module manufacturing plant from Ethiopia

    Photovoltaics specialist Valoe concluded negotiations with a customer in Ethiopia for a solar module manufacturing plant.

    Online Articles

    Online Articles

    Tue, 16 Feb 2016

  6. Applications laboratories help customers find best metals processing solutions

    A range of applications laboratories focuses on developing and enhancing production processes for optimum manufacturability.

    Online Articles

    Online Articles

    Mon, 18 Jan 2016

  7. update

    silicon depends on the contact between the soldering electrode and the stringer. Applying ..... ILT) have developed a non-contact soldering system in which the temperature is constantly ..... electrode, we use a laser beam for the soldering operation,” says ILT department head Dr. Arnold

    Magazine Articles

    Magazine Articles

    Thu, 1 Nov 2007

  8. Nanosecond pulsed fiber lasers—more than just markers

    The range of applications for nanosecond fiber lasers is growing as users are becoming aware of their flexibility and versatility of newer designs

    Online Articles

    Online Articles

    Tue, 1 Dec 2009

Get More Results

Follow us at Join us on

Twitter - Industrial Laser Solutions

  •  
  •  
  •  
Copyright © 2007-2016. PennWell Corporation, Tulsa, OK. All Rights Reserved.PRIVACY POLICY | TERMS AND CONDITIONS