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Problems in repair-welding of duplex-treated tool steels

T. Muhič ; TKC d.o.o., Ljubljana, Slovenia
J. Tušek ; Faculty of Mechanical Engineering, Ljubljana, Slovenia
M. Pleterski ; Faculty of Mechanical Engineering, Ljubljana, Slovenia
D. Bombač ; Faculty of Natural Sciences and Engineering, Ljubljana, Slovenia

Puni tekst: engleski pdf 746 Kb


str. 39-42

preuzimanja: 1.846



The present paper addresses problems in laser welding of die-cast tools used for aluminum pressure die-castings and plastic moulds. To extend life cycle of tools various surface improvements are used. These surface improvements significantly reduce weldability of the material. This paper presents development of defects in repair welding of duplex-treated tool steel. The procedure is aimed at reduction of defects by the newly developed repair laser welding techniques. Effects of different repair welding process parameters and techniques are considered. A microstructural analysis is conducted to detect defect formation and reveal the best laser welding method for duplex-treated tools.

Ključne riječi

repair welding; nitrided tool steel; PVD coating; die casting

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Podaci na drugim jezicima: hrvatski

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