What is the best choice for laser material processing – Rod, disk, slab or fiber?

Steiger, Erwin

doi:10.2351/1.5061052

Cited by 3 publications

(2 citation statements)

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“…In their main application fields of laser cutting and welding, high brightness lasers offer the possibility of flexible cutting or of the flexible weld seams generation. Moreover, with the potential to cut or weld thicker and harder materials than it is possible so far, the laser becomes irreplaceable in today's production lines [1]. For example, the laser acts as a multifunctional tool in manufacturing of lightweight cars.…”

Section: Introductionmentioning

confidence: 99%

High-power laser welding of contaminated steel sheets

Geiger

Kägeler

Schmidt

2008

Prod. Eng. Res. Devel.

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A deep penetration laser welding process differs from a heat conduction laser welding process in the generation of a steam capillary through the material. The so called keyhole is formed if high energy densities of the laser beam vaporize the base material, leading to a vaporfilled channel which is surrounded by a liquid weld pool. The shape and the oscillations of the keyhole are affected by various physical parameters of the welding process. Under constant process conditions a balance of pressure keeps the capillary open. If the material is contaminated by a layer with physical properties differing from the bulk material (e.g. oil), the equilibrium is disturbed in a negative way. The coating evaporates during the melting of the base material, resulting in vapor locks at the capillary and the weld pool, leading to pores and failures along the weld seam. In order to understand and avoid this effect, it is the aim to analyze and describe the failure generating mechanisms. Additionally, a control method of the laser power is investigated which influences the keyhole's oscillations and could suppress an unwanted collapse.

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Section: Introductionmentioning

confidence: 99%

High-power laser welding of contaminated steel sheets

Geiger

Kägeler

Schmidt

2008

Prod. Eng. Res. Devel.

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“…1. After a review of the most important laser, material processing parameters in view of these solid-state laser configurations two major application areas will be shown in detail: laser marking and laser cutting (Steiger, 2007).…”

Section: Introductionmentioning

confidence: 99%

Melt Flow and Energy Limitation of Laser Cutting

Hudeček

Dostál

2016

Acta Univ. Agric. Silvic. Mendelianae Brun.

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Laser technology is a convertible technology for plenty of parts in most materials. Laser material processing for industrial manufacturing applications is today a widespread procedure for welding, cutting, marking and micro machining of metal and plastic parts and components. Involvement and support this huge mass-production industry of laser cutting, new technology and dry-process using lasers were and are being actively developed. Fundamentally, industrial laser cutting or other applications on industry should satisfy the four key practical application issues including "Quality or Performance", "Throughput or Speed", "Cost or Total Ownership Cost", and "Reliability". Laser requires for examples several complicated physical factors to be resolved including die strength to be enable good wire-bonding and survival of severe cycling test, clean cutting wall surface, good cutting of direct attach film, and proper speed of cutting for achieving economy of throughput. Some example of maximum cutting rate, wherewith is normally limited laser energy, cutting speed is depend on type laser, different of cutting with one laser beam and beam pattern and applied laser power / material thickness will be introduced in this paper.

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