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Mechanika

Mechanika
85 (2/13), DOI: 10.7862/rm.2013.12

Tribological characteristics of stamping dies with coatings

Emil Evin, Milan Ábel, Ján Viňáš, Jana Tkáčová, Bogdan Antoszewski

DOI: 10.7862/rm.2013.12

Abstract

A variety of cast iron and steel grades are used for manufacturing dies in stamping industry. The costs of these materials may vary considerably. However, with appropriate surface treatments, coatings and lubricants, a cost-effective die material may outperform the expensive ones. Therefore, in selecting die materials, a systematic evaluation of tool materials, coatings and heat treatments are required, considering the cost and tool life as parameters. In the contribution the plasma sprayed ceramic coatings Cr203 and Al2O3 were investigated in sliding contact with steel in both, the block-on-ring arrangement (tester T 05) and deep drawing process. The friction coefficient and wear of these coatings were measured at dry friction conditions and with lubricant at utilization of tester T 05. For different types of die rings (with and without ceramic coatings) the punching forces were measured during deep-drawing process. The results show that the main advantage of application of A1203 and Cr203 coatings on dies contact surfaces in comparison with dies made of tool steel may be the increase of life-time and wear resistance, the increase of the cup surface quality, savings of deficient elements by replacement of expensive tool steels by common constructional steels.

Full text (pdf)

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About this Article

TITLE:
Tribological characteristics of stamping dies with coatings

AUTHORS:
Emil Evin (1)
Milan Ábel (2)
Ján Viňáš (3)
Jana Tkáčová (4)
Bogdan Antoszewski (5)

AUTHORS AFFILIATIONS:
(1) Technical University in Košice, Slovakia
(2) Technical University in Košice, Slovakia
(3) Technical University in Košice, Slovakia
(4) Technical University in Košice, Slovakia
(5) Kielce Univer

JOURNAL:
Mechanika
85 (2/13)

KEY WORDS AND PHRASES:
deep drawing, stamping die, ceramic coatings, friction coefficient

FULL TEXT:
http://doi.prz.edu.pl/pl/pdf/mechanika/24

DOI:
10.7862/rm.2013.12

URL:
http://dx.doi.org/10.7862/rm.2013.12

RECEIVED:
2013-05-19

COPYRIGHT:
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