Reducing tool wear by partial cladding of critical zones in hot form tool by laser metal deposition

Robert Vollmer, Christoph Sommitsch

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

This paper points out a production method to reduce tool wear in hot stamping applications. Usually tool wear can be observed at locally strongly stressed areas superimposed with gliding movement between blank and tool surface. The shown solution is based on a partial laser cladding of the tool surface with a wear resistant coating to increase the lifespan of tool inserts. Preliminary studies showed good results applying a material combination of tungsten carbide particles embedded in a metallic matrix. Different Nickel based alloys welded on hot work tool steel (1.2343) were tested mechanically in the interface zone. The material with the best bonding characteristic is chosen and reinforced with spherical tungsten carbide particles in a second laser welding step. Since the machining of tungsten carbides is very elaborate a special manufacturing strategy is developed to reduce the milling effort as much as possible. On special test specimens milling tests are carried out to proof the machinability. As outlook a tool insert of a b-pillar is coated to perform real hot forming tests.
Original languageEnglish
Title of host publicationAIP Conference Proceeedings 1896
DOIs
Publication statusPublished - 16 Oct 2017

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Wear of materials
Lasers
Tungsten carbide
Metals
Laser cladding
Die casting inserts
Machinability
Milling (machining)
Laser beam welding
Tool steel
Stamping
Machining
Nickel
Coatings

Fields of Expertise

  • Advanced Materials Science

Cite this

Reducing tool wear by partial cladding of critical zones in hot form tool by laser metal deposition. / Vollmer, Robert; Sommitsch, Christoph.

AIP Conference Proceeedings 1896. 2017.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

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AB - This paper points out a production method to reduce tool wear in hot stamping applications. Usually tool wear can be observed at locally strongly stressed areas superimposed with gliding movement between blank and tool surface. The shown solution is based on a partial laser cladding of the tool surface with a wear resistant coating to increase the lifespan of tool inserts. Preliminary studies showed good results applying a material combination of tungsten carbide particles embedded in a metallic matrix. Different Nickel based alloys welded on hot work tool steel (1.2343) were tested mechanically in the interface zone. The material with the best bonding characteristic is chosen and reinforced with spherical tungsten carbide particles in a second laser welding step. Since the machining of tungsten carbides is very elaborate a special manufacturing strategy is developed to reduce the milling effort as much as possible. On special test specimens milling tests are carried out to proof the machinability. As outlook a tool insert of a b-pillar is coated to perform real hot forming tests.

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