Study Deformability Ecological Steel (41Cr4)

Rusănescu²,

Paraschiv³

2018

Self Cite

In this paper we analyze the correlation between meteorological parameters (wind speed and direction, relative humidity, air temperature) and atmospheric pollutants in Bucharest during the cold period 26.02.2018-02.03.2018, which was based on the monitoring of the concentrations of nitrogen oxides, NO2, O3 and SO2 sulfur dioxide within 24 h and the occurrence of exceedances above the prescribed limit. It was found based on the results obtained that the wind direction influences not only the concentrations of pollutants but also the correlation between the pollutants. Traffic pollutants were at the highest concentration when the wind speed was low. We have found that the highest average concentration for NO2, NOx, NO, O3 occurred at 90% indicative humidity for vertical mixing of strong pollutants. Sulfur dioxide did not record exceeding over the limit standard in the analyzed period.

Section: Resultsmentioning

confidence: 99%

Analysis of Atmospheric Pollutants in Bucharest in Correlation with Meteorological Parameters

Rusănescu²,

Paraschiv³

2018

Self Cite

“…[23][24][25]. This is confirmed by the large use of vanadium microalloyed steel [5]. The current concern for preventing and reducing pollution [6,7,10,16,20,21].…”

mentioning

confidence: 99%

“…This reduces the need to use vanadium extracted from minerals, which reduces energy consumption and pollution generated by mining. These catalysts together with other vanadium waste are recycled by several companies that develop the supply of ferrovanadium alloys [8]. The application of vanadium microalloyed steels is now accepted for almost all complex metal structures: containers, bridges, construction equipment, machinery, etc.…”

mentioning

confidence: 99%

The Study Toughness Ecologicals Metals Materials

Rusănescu²

2018

Self Cite

This aim of this is to determine the manner of realizing tubing pipe, which have to comply with suplimentary requirements concerning the notch impact strength at lower temperature (below - 300C). We realized �73 x 5.51 mm and �89 x 13 mm pipes applying various final heat treatment variants. For each heat treatment variant were determined the mechanical properties and the impact absorbed energy at temperatures between (-60 0C and +15 0C).

“…Higher solubility of vanadium carbonitrides allow control of steel deformation microalloyed with vanadium with more some wear of cylinders [1]. Adding vanadium to steel provides improved strength compared to standard steels, providing all requirements for ductility, weldability and tenacity, without greatly increasing costs and lower energy consumption [10,17] The main source of vanadium is the recovery of used catalysts in oil refining operations [4,6,[26][27][28][29][30][31][32][33][34].…”

mentioning

confidence: 99%

Research on the Mechanical Characteristics of a Microalloyed Steel with V in the Agreement with Environmental Trends

Rusănescu²,

Biriș³

et al. 2019

Self Cite

In this paper we studied the behavior of steel 31 VMn12 micronized with V in industrial conditions. In the experiments it was intended to obtain the mechanical characteristics corresponding to the pipe qualities, in the following states of the material: from the heat of rolling; with thermal normalization treatment; with thermal improvement treatment. Experiments have been achieved for two samples made steel and rolled into tubes F 219 x 9 mm.