Analysis of the Impact of Modification of Cold Crucible Design on the Efficiency of the Cold Crucible Induction Furnace

Author(s):  
Roman Przylucki ◽  
Slawomir Golak ◽  
Piotr Bulinski ◽  
Jacek Smolka ◽  
Michał Palacz ◽  
...  
Author(s):  
R Przylucki ◽  
S Golak ◽  
P Bulinski ◽  
J Smolka ◽  
M Palacz ◽  
...  

2011 ◽  
Vol 418-420 ◽  
pp. 1768-1771 ◽  
Author(s):  
Bulan Abdullah ◽  
Siti Khadijah Alias ◽  
Ahmed Jaffar ◽  
Rashiddy Wong Freddawati ◽  
A. Ramli

The effect of different austempering holding times on the hardness and impact toughness of 0.254% niobium alloyed austempered ductile iron was investigated in this study. Molten ductile iron was prepared in an induction furnace with capacity of 60kg. Samples with dimension of 300m x Ø25mm in form of Y block double cylinder was constituted and solidified samples were then machined in accordance to ASTM E23 for impact test specimens. Samples were ground and polished before Rockwell hardness test was conducted. Austempering heat treatment process with austenitizing temperature of 900°C for 1 hour and austempering temperature of 350°C for 1 hour, 2 hours and 3 hour holding times were then carried out. The results from this research indicated that austempering the sample for 1 hour resulted in significant improvement of the impact toughness values but increasing the austempering holding time deficiently reduced the values. On the contrary, the hardness of niobium alloyed austempered ductile iron continues to increase with respect to longer austempering holding times.


Author(s):  
Roman Bikeev ◽  
◽  
Aleksandr Aliferov ◽  
Aleksei Ignatenko ◽  
Vladislav Sujashev ◽  
...  

2017 ◽  
Vol 53 (2) ◽  
pp. 267-272
Author(s):  
E. Sauvage ◽  
P. Brun ◽  
J. Lacombe ◽  
L. Aufore

2019 ◽  
Author(s):  
Eko Wismo Winarto ◽  
Suryo Darmo ◽  
Nugroho Santoso ◽  
Lilik Dwi Setyana

The bucket tooth is one of an excavator components made of manganese steel used to dig and load land into a truck or elsewhere. The impact of the bucket tooth product needs to be increased so that it has longer lifetime. The objective of this research is to know the right composition of manganese in order to obtain the optimal impact strength. Varying the composition of manganese from 11,2% to 15,1% wt Mn are carried out in an induction furnace. Mechanical tests carried out include microstructure observation, impact and hardness testing. The structure of austenite dominates manganese steel with an average grain size of 60 μm (11,2% Mn) and increases up to 45% for the contents of 15,1% Mn. The lowest impact strength (0,08 J/mm2) in specimens with 11,2% Mn, increases up to 42% (0,142 J/mm2) in specimens with 15,1% Mn. The increase of impact strength is affected by grain size and austenite stability. The hardness of manganese steel with 11,2% Mn (330 VHN) increases up to 376 VHN with 15,1% Mn.


2015 ◽  
Vol 60 (3) ◽  
pp. 1711-1716 ◽  
Author(s):  
A. Smalcerz ◽  
B. Oleksiak ◽  
G. Siwiec

AbstractA big interest in application of cold crucible furnace (CCF) for industrial, particularly metallurgical, processes has been observed in recent years. They are mainly utilised for melting of metal, glass and other materials. Analyses of processes that occur in such devices are performed; however, computer modelling is rarely applied. As a precise determination of the electromagnetic field distribution is essential for a proper analysis of processes in furnaces with cold crucibles, a complex 3D model development is necessary. In the paper, effects of a crucible design and current frequency on the efficiency of the induction furnace with cold crucible are presented. Numerical calculations were performed with the use of the Flux 3D professional software.


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