Strength of SHS Aluminium Cast Iron from Dispersed Mechanical Engineering Waste

2018 ◽  
Vol 284 ◽  
pp. 679-684
Author(s):  
L.R. Kharisov ◽  
N.N. Safronov ◽  
G.N. Safronov
Keyword(s):  
Cast Iron ◽  
Statistical Processing ◽  
Machine Building ◽  
Regression Coefficients ◽  
Temperature Synthesis ◽  
Iron Castings ◽  
High Temperature Synthesis ◽  
Shs Casting ◽  
Structural Iron ◽  
The Mathematical Model

The article presents an alternative method of obtaining aluminium cast iron in the process of self-propagating high-temperature synthesis from disperse waste of machine-building enterprises. The deficiencies of the traditional methods for obtaining structural iron castings with aluminum are established. The analysis of the factors influencing the strength of the SHS aluminium cast iron, the planned experiment for obtaining the maximum strength of SHS aluminium cast iron for two input factors varying at three levels and three parallel observations were carried out. The statistical processing of experimental results is performed. The mathematical model is obtained for the dependence of operational factors on the composition of the charge of the SHS process. The significance of the regression coefficients of the equation is determined. The adequacy of the obtained equation is checked for the results of observations. The analysis of the conditions for the formation of the microstructure of aluminium cast iron in the process of SHS-casting is presented.

Study on the Amount of SiO2 on the Thermal Resistance of the Ceramic-Lined Composite Cast Iron Pipe

2011 ◽  
Vol 322 ◽  
pp. 3-6 ◽  
Author(s):  
He Guo Zhu ◽  
Huan Wang ◽  
Jin Zhu Song ◽  
Yin Qun Yao ◽  
Jian Liang Li ◽  
...  
Keyword(s):  
Cast Iron ◽  
High Temperature ◽  
Thermal Resistance ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Ceramic Liner ◽  
Cast Pipe

The amount of SiO2on the thermal resistance of the ceramic lined cast pipe fabricated by self-propagating high temperature synthesis technology was investigated. Results indicated that the ceramic-lined composite cast iron pipe had excellent thermal resistance. With the increase of the additive SiO2amount, the thicknesses and cavity of the ceramic liner increased, which led to the increase in their thermal resistance. In a given ceramic-lined composite cast iron pipe, its thermal resistance increased with the increase of the center temperature.

scholarly journals Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–X (X = La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3144
Author(s):  
Vitaliy V. Sanin ◽  
Yury Yu. Kaplansky ◽  
Maksym I. Aheiev ◽  
Evgeny A. Levashov ◽  
Mikhail I. Petrzhik ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Strength Characteristics ◽  
Structure And Properties ◽  
Narrow Fraction ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Cast Alloys ◽  
Composition Structure ◽  
Shs Casting ◽  
Co Doped

The NiAl–Cr–Co–X alloys were produced by centrifugal self-propagating high-temperature synthesis (SHS) casting. The effects of dopants X = La, Mo, Zr, Ta, and Re on combustion, as well as the phase composition, structure, and properties of the resulting cast alloys, have been studied. The greatest improvement in overall properties was achieved when the alloys were co-doped with 15% Mo and 1.5% Re. By forming a ductile matrix, molybdenum enhanced strength characteristics up to the values σucs = 1604 ± 80 MPa, σys = 1520 ± 80 MPa, and εpd = 0.79%, while annealing at T = 1250 ℃ and t = 180 min improved strength characteristics to the following level: σucs = 1800 ± 80 MPa, σys = 1670 ± 80 MPa, and εpd = 1.58%. Rhenium modified the structure of the alloy and further improved its properties. The mechanical properties of the NiAl, ZrNi5, Ni0.92Ta0.08, (Al,Ta)Ni3, and Al(Re,Ni)3 phases were determined by nanoindentation. The three-level hierarchical structure of the NiAl–Cr–Co+15%Mo alloy was identified. The optimal plasma treatment regime was identified, and narrow-fraction powders (fraction 8–27 µm) characterized by 95% degree of spheroidization and the content of nanosized fraction <5% were obtained.

scholarly journals COMPLEX MODIFICATION OF GRAY CAST IRON

2017 ◽  
pp. 16-20
Author(s):  
O. S. Komarov ◽  
E. V. Rozenberg ◽  
K. E. Baranowski
Keyword(s):  
Cast Iron ◽  
Gray Cast Iron ◽  
Steel Plate ◽  
Machine Building ◽  
Gray Cast ◽  
High Quality ◽  
Iron Castings ◽  
Chill Zone ◽  
Surface Active

The influence of the complex modifier by chemical – active and surface-active additives of gray cast iron on the size of chill and on the width of molted iron zone was researched. The width of a chill zone and molted iron zones were measured at chank ends of various diameter cores. The cores were casted on a massive steel plate and also in standard chill tests. It was established that additional adding of surface-active bismuth in structure of various graphitizing modifiers promoted to reduce the width a chill zone and molted iron zones. It was established that the complex modifiers consisting of chemical – active and surfaceactive components are effective in fight with chill in cast iron castings and can be recommended for application in foundry shops of the entities of a machine-building profile for production of high-quality castings. 

Electron Beam Coatings with SHS Composite Powders “TiC - Cast Iron Binder" Synthesized in Air

2016 ◽  
Vol 685 ◽  
pp. 695-699 ◽  
Author(s):  
Elena N. Korosteleva ◽  
Gennadii A. Pribytkov ◽  
Saltanat S. Kalambaeva ◽  
Victoria V. Korzhova ◽  
Vasiliy G. Durakov
Keyword(s):  
Wear Resistance ◽  
Electron Beam ◽  
Cast Iron ◽  
Abrasive Wear Resistance ◽  
Composite Powders ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Powder Content ◽  
Cast Iron Powder ◽  
Carbide Particles

The paper presents the result of studies of composite powders produced by self-propagating high temperature synthesis (SHS) in the reaction mixtures of titanium, carbon and high chrome cast iron, and electron-beam coatings based on them. It was found that the morphology and dispersion of titanium carbide particles in the SHS-product were determined by cast iron powder content in the reaction mixtures. The effect of content of the SHS powders on the characteristics of electron-beam coatings, including abrasive wear resistance of facing coatings was shown.

Hardening of metal surface via self-propagating high-temperature synthesis in thin films

2007 ◽  
Vol 43 (4) ◽  
pp. 239-242
Author(s):  
S. Kh. Suleimanov ◽  
O. A. Dudko ◽  
V. G. Dyskin ◽  
Z. S. Settarova ◽  
M. U. Dzhanklych
Keyword(s):  
Thin Films ◽  
High Temperature ◽  
Metal Surface ◽  
Temperature Synthesis ◽  
High Temperature Synthesis

Effect of Additives on the Characteristics of Amorphous Nano Boron Powder Fabricated by Self-Propagating High Temperature Synthesis

2015 ◽  
Vol 25 (12) ◽  
pp. 659-665
Author(s):  
Sin Hyong Joo ◽  
Hayk H. Nersisyan ◽  
Tae Hyuk Lee ◽  
Young Hee Cho ◽  
Hong Moule Kim ◽  
...  
Keyword(s):  
High Temperature ◽  
Temperature Synthesis ◽  
Boron Powder ◽  
Effect Of Additives ◽  
High Temperature Synthesis
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