The influence of different conditions of laser-beam interaction in laser surface hardening of steels
Grum, Janez (Author), Kek, Tomaž (Author)

URLURL - Presentation file, Visit http://dx.doi.org/10.1016/j.tsf.2003.11.177 This link opens in a new window

The paper presents the results of laser-beam interaction in laser surface hardening of C45E steel with different types of absorbing coating on specimen surfaces. A photodiode was used to capture IR radiation from the interaction spot between a laser beam and a specimen surface having different absorbing coatings. The influence of laser-hardening parameters, type of absorber and absorbing coating thickness on the IR radiation intensity from the interactionspot was studied. The results confirmed that there was a strong correlation between a voltage signal of the IR radiation and the size of the hardened trace in the surface layer of steel depending on the type of absorberchosen. Changes of the absorbing coating thickness produced changes ofthe absorptivity of the laser beam, which was confirmed by measurements of the depth and width of hardened traces. For laser surface hardening, the optimum coating thickness of a graphite absorber was determined. A factorial analysis and a method of orthogonal polynomials were used to determine response surfaces for the voltage signal of IR radiation and the depth of the hardened trace achieved.

Keywords:laser surface hardening, absorbing coatings, IR radiation, IR photodiode, steel C45E
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Number of pages:str. 94-99
Numbering:Letn. 453/454
ISSN on article:0040-6090
COBISS.SI-ID:7062555 Link is opened in a new window
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Record is a part of a journal

Title:Thin Solid Films
Shortened title:Thin solid films
Publisher:Elsevier Sequoia
COBISS.SI-ID:1119759 This link opens in a new window

Secondary language

Keywords:absorpcijske prevleke

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