A New Technology to Obtain Ecological Steels

Ghermec, Olimpia; Ghermec, Cristian; Popescu, Traian Valeriu

doi:10.30638/eemj.2009.166

Cited by 3 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The study was developed following the cyclogram illustrated in Fig. 1 (Ghermec et al, 2009). The heating phase (800-900 o C) takes place in a thermo resistant oven.…”

Section: Saving Electrical Energymentioning

confidence: 99%

Improving the Environmental Performances of Iron Powders Carburizing Process in a Methane-Bearing Atmosphere

Ghermec

Dubovan

et al. 2013

Environ. Eng. Manag. J.

Self Cite

View full text Add to dashboard Cite

Considering the advantages of steel surface hardening, when less expensive low-and medium-carbon steels can be surface hardened without the problems of distortion and cracking associated with the through hardening of thick sections, we developed some research entailing the increase in environmental performance of iron powders carburizing process using methane as carrier. Apart of studies on optimal working parameters and methods, our research addresses improvements in environmental performance of process by selecting powders suppliers, reducing raw materials and energy consumptions, considering products life cycle analysis. A comparison is also performed among the characteristics of three series of research for obtaining ecological steels for automotive industry.

show abstract

“…The study was developed following the cyclogram illustrated in Fig. 1 (Ghermec et al, 2009). The heating phase (800-900 o C) takes place in a thermo resistant oven.…”

Section: Saving Electrical Energymentioning

confidence: 99%

Improving the Environmental Performances of Iron Powders Carburizing Process in a Methane-Bearing Atmosphere

Ghermec

Dubovan

et al. 2013

Environ. Eng. Manag. J.

Self Cite

View full text Add to dashboard Cite

show abstract

“…There were highlighted the advantages of this proceeding: the raw material is represented by the iron powder, wastewater which might need purification or recycling do not result; the final product is a part which does not need afterward processing with solid waste result and therefore the specific energy consume is lower [2]. This is why the steel obtained through this proceeding can be considered ecological steel.…”

Section: Introductionmentioning

confidence: 99%

“…Carburizing in a methane-bearing atmosphere can be realized in three ways: carburizing at the same time with sintering in a total time of electric energy consumption of 780 min (I) [2], carburizing-sintering with the application of a debinding bearing at 350 o C and with time of electric energy consumption of 415 min (II) [4] and sintering followed by carburizing for 370 minutes (III) [3]. Synthetic cementite was prepared by overcarburizing the iron powder in a methane bearingatmosphere [5].…”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

Research on the Reduction of Greenhouse Gases Emissions to the Enrichment in Carbon of the Iron Powders

Ghermec

Ciobanu

Bucşe

2015

AEF

View full text Add to dashboard Cite

Abstract. The steels elaborated through proceedings that are specific to powder metallurgy have as raw material the iron powder which is enriched in carbon through various proceedings: carburizing in a methane-bearing atmosphere or in a liquefied petroleum gas (LPG)-bearing atmosphere, with the addition of synthetic cementite. In order to be developed as environment friendly technologies, there are made researches in order to reduce GHG emissions.

show abstract

Toz Metalurjisi Yöntemi ile Üretilen Fe Esaslı Kompozit Malzemelerde Vakum Sementasyon İşleminin Sinterlenebilirlik ve Mekanik Özelliklere Etkisinin İncelenmesi

2023

View full text Add to dashboard Cite

Bu çalışmada; %100 Fe ve %0.2-0.4 grafit içeriğine sahip Fe esaslı kompozit malzemeler toz metalurjisi (T/M) yöntemiyle üretilmiştir. Üretilen numuneler sadece sinterleme, sinterleme + vakum sementasyon + temperleme ve sadece vakum sementasyon + temperleme işlemine tabi tutulmuştur. Numunelerin mekanik özelliklerini belirlemek için üç nokta eğme testi ve mikrosertlik ölçümleri gerçekleştirilmiştir. Numunelerin mikroyapı ve üç nokta eğme testi kırık yüzey incelemeleri için Alan Emisyon Taramalı Elektron Mikroskobu (FESEM) ve Enerji Dağıtıcı X-ışını Spektroskopisi (EDS) ile görüntü analizleri gerçekleştirilmiştir. Yapılan incelemeler sonucunda, sadece vakum sementasyon işlemi uygulanan numunelerde toz taneleri arasında boyun oluşumunun meydana geldiği ve sinterleme işleminin gerçekleştiği görülmüştür. Bu şekilde Fe esaslı kompozit malzemelerin vakum sementasyon yöntemi ile sertleştirilmesi ve sinterleme işlemleri bir arada yapılabilmektedir. Böylelikle T/M yöntemiyle üretilen kompozit malzemelerin kullanım alanlarının artırılması, üretim maliyetlerinin düşürülmesi, doğal kaynakların tüketiminin azaltılması ve ekosistemin korunmasına katkı sağlanabilecektir.

show abstract

A New Technology to Obtain Ecological Steels

Cited by 3 publications

References 0 publications

Improving the Environmental Performances of Iron Powders Carburizing Process in a Methane-Bearing Atmosphere

Improving the Environmental Performances of Iron Powders Carburizing Process in a Methane-Bearing Atmosphere

Research on the Reduction of Greenhouse Gases Emissions to the Enrichment in Carbon of the Iron Powders

Toz Metalurjisi Yöntemi ile Üretilen Fe Esaslı Kompozit Malzemelerde Vakum Sementasyon İşleminin Sinterlenebilirlik ve Mekanik Özelliklere Etkisinin İncelenmesi

Contact Info

Product

Resources

About