CARACTERIZAÇÃO DE NOVO AÇO FERRAMENTA PARA MATRIZES DE EXTRUSÃO DE ALUMÍNIO

Aluminum extrusion dies are an important segment of application on industrial tools steels, which are manufactured in steels based on AISI H13 steel. The main properties of steels applied to extrusion dies are: wear resistance, impact resistance and tempering resistance. The present work discusses t...

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Bibliographic Details
Published in:Tecnologia em metalurgia, materiais e mineração materiais e mineração, 2014-04, Vol.11 (2), p.112
Main Authors: Bacalhau, José Britti, Rodrigues, Fernanda Moreno, Mesquita, Rafael Agnelli
Format: Article
Language:Portuguese
Subjects:
Aluminum
Aluminum extrusion
Bars
Charpy impact test
Chromium molybdenum vanadium steels
Die steels
Extrusion dies
Forges
Hot work tool steels
Impact resistance
Impact strength
Impact tests
Molybdenum
Nitriding
Quality
Steel
Tempering
Wear resistance
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Summary:Aluminum extrusion dies are an important segment of application on industrial tools steels, which are manufactured in steels based on AISI H13 steel. The main properties of steels applied to extrusion dies are: wear resistance, impact resistance and tempering resistance. The present work discusses the characteristics of a newly developed hot work steel to be used on aluminum extrusion dies. The effects of Cr and Mo contents with respect to tempering resistance and the Al addition on the nitriding response have been evaluated. From forged steel bars, Charpy impact test and characterization via EPMA have been conducted. The proposed contents of Cr, Mo, and Al have attributed to the new VEX grade a much better tempering resistance than H13, as well as a deeper and harder nitrided layer. Due to the unique characteristics, this new steel provides an interesting alternative to the aluminum extrusion companies to increase their competitiveness
ISSN:2176-1515
2176-1523
DOI:10.4322/tmm.2014.017