Advances in laser soldering using high power diode lasers

Hoult, A. P.; McLenaghan, A.J.; Rathod, Jignesh

doi:10.1117/12.497952

Cited by 4 publications

(6 citation statements)

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“…From the applications point of view, beam quality and power of the laser define the potential application areas (Bachmann, 2003). In soldering applications, a very low power density is required (Beckett et al, 1997) and with moderate beam quality and high efficiency, diode lasers are well suited to soldering applications (Hoult et al, 2002;Bachmann, 2003). These lasers are capable of providing continuous wave (CW) power of several watts from single diodes and tens of watts CW from multiple emitter assemblies (Whitehead and Foster, 1995;Beckett et al, 1997).…”

Section: Selection Of Candidate Reflow Toolsmentioning

confidence: 99%

“…The reported studies have mainly addressed standard and fine pitch SMCs down to pitches of 0.635 mm (25 mil), (Geren, 2003). Since the 1990s further research has considered automation of rework for fine pitch SMCs (Laferriere and Fukumoto, 1995;Beckett et al, 1997) and both for TH and surface mount technology components (Hoult et al, 2002). Furthermore, a recent study carried out by Geren (2003) into rework technology selection based on overall rework cost per component indicates that the use of fully automated rework cells are economically justifiable up to a capital cost of e200,0000.…”

Section: Introductionmentioning

confidence: 99%

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Design of a flexible assembly and remanufacturing cell for advanced SM components: selection of cell design concept based on reflow tools

Geren

Çakirca²,

Bayramoğlu³

2006

Soldering &Amp; Surface Mount Technology

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Purpose -To design a flexible integrated robotic assembly and rework (remanufacturing) cell for assembly, selective assembly and rework of advanced surface mount components (SMCs) using the generic methodology developed in this paper. Design/methodology/approach -Manual rework procedures are investigated for all advanced SMCs. General and specific component-related rework considerations are obtained and necessary tooling candidates for automation are determined. This is followed by determination of the specific automated rework procedure and selection of suitable tooling for automated robotic rework and generation and evaluation of design concepts. Findings -The developed methodology, which considers the reflow tool at the centre of the development process, has worked well in designing a flexible integrated robotic assembly and rework cell.Practical implications -This study identified the rework requirements for advanced SMCs, the essential features for rework reflow tools, criteria for comparing reflow tools, and a generic procedure for design and concept selection. Originality/value -It provides valuable knowledge for designers of flexible integrated robotic assembly and rework cells for assembly, selective assembly and rework of advanced SMCs.

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Section: Selection Of Candidate Reflow Toolsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of a flexible assembly and remanufacturing cell for advanced SM components: selection of cell design concept based on reflow tools

Geren

Çakirca²,

Bayramoğlu³

2006

Soldering &Amp; Surface Mount Technology

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“…Candidate reflow tools that possibly fulfill the requirements in the requirements list have to be found using solution finding methods. For this purpose the literature and catalogues of reflow system manufacturers were studied and the results are tabulated in Table III (Wang et al , 2001; Hoult et al , 2002; Li, 2000; Svelto, 2009; Beckett et al , 2002; McCluskey et al , 1997). Solutions obtained are as hot air/gas, infrared (IR), high power diode laser (HPDL), CO 2 laser, neodymium‐doped yttrium aluminum garnet (Nd:YAG) laser and diode‐pumped solid‐state neodymium‐doped yttrium aluminium garnet (DPSS Nd:YAG) laser.…”

Section: Designing a Pcba Rework Cell Using The New Generic Mechanical Design Methodologymentioning

confidence: 99%

“…As a result, research in this field has been concentrated on the automation of PCBA rework. There have been a number of reported attempts to automate rework for fine pitch (down to pitches of 0.635 mm (25 mil) surface mount components (SMCs) (Laferriere and Fukumoto, 1995; Beckett et al , 1997) and both for through‐hole (TH) and SMCs (Hoult et al , 2002) for plastic ball grid array (PBGA) components (Liu et al , 2002), and others for both standard, fine pitch and advanced SMCs including flip chips (FCs) (Hanreich et al , 2001; Russell, 2000; Wang et al , 2001). These are stand alone machines, designed for repeated assembly and rework operations on a limited component range with limited capabilities.…”

Section: Introductionmentioning

confidence: 99%

Systematic mechanical design approach for a flexible printed circuit board assemblies (PCBA) rework cell: part II – conceptual design of soldering and desoldering system

Geren

Sarıgül

Bayramoğlu

2012

Soldering &Amp; Surface Mount Technology

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PurposeThe purpose of this paper is to apply the developed systematic mechanical design methodologies, that are obtained in part I, to investigate their success in designing mechanics of a flexible printed circuit board assembly (PCBA) rework cell.Design/methodology/approachThe decision of soldering and desoldering tool, which is the most critical function of a PCBA rework or remanufacturing cell, significantly influences overall design concept. Therefore, the paper starts by applying the design methodology to the soldering and desoldering function. The same study is repeated for the rest of the sub‐functions but only the results are provided.FindingsAn application of rework machine design methodology for the design of a PCBA rework cell has been made available. In addition to this, the embedded knowledge, such as the requirements list, the function structure, the function/means tree, the weighted objective tree and evaluation chart for the soldering and desoldering function are provided.Practical implicationsThe paper is the first work providing both embedded knowledge and the application of the systematic design methodology for the design of a fully automated flexible PCBA rework cell. The methodology leads rework machine designers in a well‐controlled and structured design environment.Originality/valueThe design methodology can be applied to all functions or targeted on key weighted areas to ensure that the designed rework machine meets the key areas of concerns. Furthermore, the methodology is generic and may be used to develop other complex manufacturing sytems.

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“…Laser soldering presents the most promising technique for highvolume production because of easy automation, a non-contact technique, localized heating, and rapid heating and cooling cycles, which minimize distortions and heating damage [3,4]. Some authors [5][6][7] have proposed lead-free laser soldering for overlap and flanged seam geometries, using as low as 10 W laser power.…”

Section: Introductionmentioning

confidence: 99%