Utilization of oxidized cast-iron and steel scrap in small-diameter shaft furnaces

2009 ◽  
Vol 39 (6) ◽  
pp. 460-462
Author(s):  
A. V. Feoktistov ◽  
I. F. Selyanin ◽  
S. A. Bedarev ◽  
A. V. Prokhorenko ◽  
V. A. Marchenko
2013 ◽  
Vol 699 ◽  
pp. 869-874 ◽  
Author(s):  
Shun Myung Shin ◽  
Dong Won Lee ◽  
Sang An Ha ◽  
Jei Pil Wang

Iron and steel scrap have been reused to produce new steel and cast iron in the steelmaking and foundry industry for more than 150 years, but the accumulation of tramp elements contained in steel scrap such as copper, tin, antimony, and arsenic is a major concern. This is primarily because these tramp elements are difficult to remove in conventional steelmaking processes. In particular, the presence of copper during the recycling of steel scrap can cause severe surface cracking during hot rolling (hot shortness), inhibit recrystallization during hot forming, and reduce ductility in deep drawing. For these reasons, considerable efforts have been made in recent decades to develop a technology that can remove copper from ferrous scraps[1-3].


Alloy Digest ◽  
1964 ◽  
Vol 13 (1) ◽  

Abstract MEEHANITE-GD is a high strength iron casting having high damping capacity, self-lubricating properties, and good machinability. It combines the good properties of both cast iron and steel. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on casting, heat treating, machining, and joining. Filing Code: CI-32. Producer or source: Meehanite Metal Corporation.


Alloy Digest ◽  
1954 ◽  
Vol 3 (1) ◽  

Abstract MEEHANITE GA is a high strength iron casting having high damping capacity, self-lubricating properties, and good machinability. It combines the good properties of both cast iron and steel. Applications include machine tools, gears, shafts, and housings. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on heat treating and machining. Filing Code: CI-5. Producer or source: Meehanite Metal Corporation.


Author(s):  
P.A. Tsirkov ◽  
V.G. Vyalkov ◽  
S.N. Glazunov ◽  
L.D. Varlamova

The study is devoted to method for restoration of worn cylindrical and fl at surfaces of products made of cast iron and steel using ER70S-6 welding wire at moderate welding currents by electric arc surfacing.


2010 ◽  
Vol 457 ◽  
pp. 459-464
Author(s):  
Edis B. Ten

In this work the development of the technology and equipment for gas injection treatment of cast iron by inert gas (nitrogen) is presented. The equipment includes the plunging lance as a lined steel pipe with nozzles. The nozzles are thin channels, which are lined by ceramic tubes with small-diameter. The lance has a multiple use, as it has calibrated channel sizes, and provide the stability regime of gas injection treatment. The characteristic of the gas injection technology consists of blowing of melt by gas, which is injected into the liquid cast iron through thin jet with a speed near to the velocity of sound. In this case, the dispersion of gas jets in small-sized bubbles is reached, therefore the refining effectiveness increases. The gas injection treatment shows the promotion of casting properties, improvement of homogeneity and fineness of structure, stabilization or increasing of mechanical properties, decreasing of casting defectiveness. The positive effects of the gas injection treatment is the result of complex action of the injecting gas into the cast iron melt. Together with refining and homogenizing action at specified conditions, it offers the modifying and alloying effects also.


2017 ◽  
pp. 625-630
Author(s):  
R. Jiang ◽  
D. Weerasinghe ◽  
C. Zhang ◽  
X.L. Zhao ◽  
J. Kodikara ◽  
...  

2021 ◽  
Vol 15 (4) ◽  
pp. 504-509
Author(s):  
Imre Kiss

The objectives of this research is to study and understand the nodulizing of ductile iron using in-ladle treatment process. Among the more common nodulizing agents is magnesium (Mg) which is conventionally added to the cast iron by combining suitable alloys of one or both of these elements with molten cast iron. Depending on the characteristics of each master alloy used as nodulizer, different treatment methods and techniques are used, among these, the most widely used being in-ladle, in-mould, and flow-through, the first being the most used. This research deals with the parameters, that affect the quality of ductile iron produced using in-ladle treatment process. The parameters involved are the percentage of magnesium–ferrosilicon (Fe–Si–Mg) used and the nodulizing technique. In-ladle treatment used consists of a deep pocket into the bottom of ladle, in which magnesium–ferrosilicon is placed into it together with a steel scrap barrier (steel sheets) or calcium carbide. This study, take into account, the degree of assimilation of magnesium, which shows the performance of the chosen process, depending on the nodulizer used and the temperature of the treatment.


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