F-free mould powders for low carbon steel slab casting – technological parameters and industrial trials

Based on the plasma nitriding technique, the double glow plasma surface metallurgy (DG-PSM) technology was developed. This technology is also known as the Xu-Tec Process which utilizes solid metallic elements such as Ni, Cr, Mo, W, Ti, Al, Nb, Zr and their combinations to accomplish plasma surface alloying. Mo-Cr strengthened coating was prepared on the surface of low carbon steel Q235 by this technology. This coating is used to high wear resistant cold die LD steel. By experiment of the three different prescriptions in source cathode, the effect of source cathode composition on the coating has been studied. The technological parameters were as follows: The ratio of Mo and Cr were 2:1, 4:1 and 6:1. The work-piece material is Q235 low carbon steel. Holding time is 4h. Holding temperature 1050°C.Source cathode structure was threadiness. The consequences of composition analysis and microstructure observation results show that, most approaches the purpose of this research is the ratio of Mo and Cr is 6:1, and the alloyed layer has stronger adhesion with substrate.

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Hook-Like Microstructure at the Subsurface of Ultra-low Carbon Steel Slab

Metallography Microstructure and Analysis ◽

10.1007/s13632-018-0457-y ◽

2018 ◽

Vol 7 (4) ◽

pp. 414-420 ◽

Cited By ~ 1

Author(s):

Pengcheng Xiao ◽

Liguang Zhu ◽

Zengxun Liu ◽

Qingjun Zhang

Keyword(s):

Carbon Steel ◽

Low Carbon Steel ◽

Low Carbon ◽

Steel Slab ◽

Ultra Low Carbon Steel

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Evolution of Columnar γ Grain in Low Carbon Steel and Its Refinement by Additional Elements in Thin Slab Casting Simulator

ISIJ International ◽

10.2355/isijinternational.48.344 ◽

2008 ◽

Vol 48 (3) ◽

pp. 344-349 ◽

Cited By ~ 10

Author(s):

Yoshinao Kobayashi ◽

Satoshi Iwasaki ◽

Koji Nakazato ◽

Takaaki Hibaru ◽

Shuuji Kuroda ◽

...

Keyword(s):

Carbon Steel ◽

Low Carbon Steel ◽

Low Carbon ◽

Thin Slab ◽

Thin Slab Casting ◽

Slab Casting

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Identification and Prediction of Surface Topography with Regard to Variable Conditions of Cold Rolling Process

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.607.5 ◽

2014 ◽

Vol 607 ◽

pp. 5-10

Author(s):

Jan Valíček ◽

Marta Harničarová ◽

Pavel Koštial ◽

Zora Jančíková ◽

J. Zavadil ◽

...

Keyword(s):

Mathematical Model ◽

Carbon Steel ◽

Surface Topography ◽

Low Carbon Steel ◽

Rolling Process ◽

Low Carbon ◽

Technological Parameters ◽

Rolled Material ◽

Absolute Reduction ◽

Model Algorithm

Contribution of the work consists in creation of a mathematical model (algorithm) for prediction of technological parameters of the two-high rolling stand DUO 210 Sva and Q110 at change of the absolute reduction Δh, for example for a deep-drawing steel and of the brand KOHAL grade 697 and low carbon steel, as well as generally speaking for any rolled material. It is possible to identify and predict on the basis of this algorithm an instant state of surface topography in respect to variable technological conditions. On this basis it is then possible to calculate and plot individual main technological parameters.

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