Next Article in Journal
Development of a Novel Resistance Heating System for Microforming Using Surface-Modified Dies and Evaluation of Its Heating Property
Previous Article in Journal
Laser-Ignited Self-Propagating Sintering of AlCrFeNiSi High-Entropy Alloys: An Improved Technique for Preparing High-Entropy Alloys
Previous Article in Special Issue
Investigation of Microstructure, Nanohardness and Corrosion Resistance for Oxi-Nitrocarburized Low Carbon Steel
Article Menu

Export Article

Open AccessArticle
Metals 2019, 9(4), 439; https://doi.org/10.3390/met9040439

Calculation of the Mixture Flow in a Low-Pressure Carburizing Process

1
Institute of Materials Science and Engineering, Lodz University of Technology, 1/15 Stefanowskiego Street, 90-924 Lodz, Poland
2
Seco/Warwick S.A., 8 Sobieskiego Street, 66-200 Świebodzin, Poland
*
Author to whom correspondence should be addressed.
Received: 19 March 2019 / Revised: 10 April 2019 / Accepted: 11 April 2019 / Published: 15 April 2019
(This article belongs to the Special Issue Surface Treatment Technology of Metals and Alloys)
  |  
PDF [2961 KB, uploaded 15 April 2019]
  |  

Abstract

The right selection of carburizing gas flow rates in the low-pressure carburization process is a key factor in terms of its efficiency. However, a correct calculation of the amount of carburizing gas required for uniform carburization of parts, taking into account the process temperature and batch size, is still problematic. For this reason, modern carburizing processes are carried out using an excessive belaying flow of carburizing gases. In this work steel parts (16MnCr5) were carburized in a variable-flow carburizing process (960 °C) individually matched to each segment of saturation. The effect of the variable-flow on the microstructure, surface hardness, and case hardness depth was evaluated and compared to that of a control group. It was proven that the amount of the mixture used in the variable-flow carburizing process can be significantly reduced to 54% of that consumed during the regular constant-flow carburizing without affecting the properties of the hardened layer of the steel parts. View Full-Text
Keywords: carburizing mixture flow; low-pressure carburizing; vacuum carburizing carburizing mixture flow; low-pressure carburizing; vacuum carburizing
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Wołowiec-Korecka, E.; Korecki, M.; Sut, M.; Brewka, A.; Kula, P. Calculation of the Mixture Flow in a Low-Pressure Carburizing Process. Metals 2019, 9, 439.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top