Effect of short-duration carbonitriding followed by tempering on the structure and properties of punches for cold extrusion

Muzhevika, A. S.; Muratov, F. G.; Litvinova, V. A.

doi:10.1007/bf00780442

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2014

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“…In [4] authors presented additional tempering after carbonitriding makes it possible to increase toughness resistance of the diffusion layer without reducing its hardness. An oxide layer is formed which facilitates wearing in eithin and improves the appearance of the tool.…”

Section: Introductionmentioning

confidence: 99%

Researches on the Wear of the Stamped Punches Heat Treated Differently Using the Method of Deviation from Circularity

Stancioiu

Luca

2014

AMM

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This paper presents the results of some research with different heat treatments for the steel OSC10 compared to steel 205Cr115 of which have made the cut punches, each one realizing 16,000 stampings in the same technology. A study was done on the wear of used tools stamping operations using the method of deviation from circularity. Due to the fact that the material of workpiece sheet has fibers orientated in the direction of lamination the cutting tools encounters resistance in a different manner on their circumference. In some portions the edges penetrate perpendicularly to the fiber, the cutting material poses a higher resistance and obtains more pronounced wear of the edges. On the other portions, the edges penetrate parallel with the fiber, in this case the material strength is low and provides a wear less pronounced.

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Section: Introductionmentioning

confidence: 99%