scholarly journals Application of high-speed gas-flame technology for hardening the surfaces of machines and robots of automatic gas-flame spraying

2021 ◽  
Vol 8 (1-2) ◽  
Author(s):  
Sh. A. Bazarbekov
Keyword(s):  
High Speed ◽  
Flame Spraying ◽  
Gas Flame

scholarly journals Structural and technological formation of surface nanostructured Ti-Ni-Mo layers by high-speed gas-flame spraying

2015 ◽  
Vol 33 ◽  
pp. 03002
Author(s):  
Zhesfina Blednova ◽  
Peter Rusinov ◽  
Vladimir Shishkalov
Keyword(s):  
High Speed ◽  
Flame Spraying ◽  
Gas Flame

Investigation of a wear-and corrosion-resistant coating of the TiCN−Ni-alloy system, obtained by high-speed gas-flame spraying

1999 ◽  
Vol 38 (7-8) ◽  
pp. 358-361 ◽  
Author(s):  
I. A. Podchernyaeva ◽  
V. M. Kisel’ ◽  
Y. I. Evdokimenko ◽  
V. A. Lavrenko ◽  
V. V. Pasichnyi
Keyword(s):  
High Speed ◽  
Alloy System ◽  
Flame Spraying ◽  
Corrosion Resistant ◽  
Resistant Coating ◽  
Wear And Corrosion ◽  
Ni Alloy ◽  
Gas Flame ◽  
Corrosion Resistant Coating

Performance Characteristics of Carbide Coatings Obtained by High-Speed Gas-Flame Spraying

2020 ◽  
Vol 11 (5) ◽  
pp. 1260-1265
Author(s):  
O. Yu. Elagina ◽  
A. K. Prygaev ◽  
I. V. Volkov
Keyword(s):  
High Speed ◽  
Performance Characteristics ◽  
Flame Spraying ◽  
Carbide Coatings ◽  
Gas Flame

Special features of processes of high-speed gas flame spraying

2003 ◽  
Vol 17 (10) ◽  
pp. 833-836 ◽  
Author(s):  
L Kh Baldaev ◽  
N G Shesterkin ◽  
V A Lupanov ◽  
A P Shpatov
Keyword(s):  
High Speed ◽  
Flame Spraying ◽  
Gas Flame

Effect of Hafnium on the Structural and Mechanical Properties of the Surface Layers on the Basis of TiNi

2016 ◽  
Vol 863 ◽  
pp. 8-13
Author(s):  
Peter Olegovich Rusinov ◽  
Zhesfina Michailovna Blednova
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
High Speed ◽  
Flame Spraying ◽  
Complex Method ◽  
Surface Layers ◽  
Gas Flame ◽  
And Performance ◽  
Surface Modified

The study contains a complex method of forming the surface-modified layers using materials with shape memory effect by high-speed gas-flame spraying of mechanically activated powders based on TiNiHf, followed by thermal and thermomechanical treatment. This allowed us to form the nanoscale state in the surface layers, which have high levels of functional, mechanical and performance properties. We demonstrated that pre-mechanoactivation of TiNiHf powder has reduced the coatings' porosity (less than 1%) and provided adhesive strength of the coating with the substrate (110 to 120 MPa). We described the formation mechanism of nanostructured state in TiNiHf powders under severe plastic deformation during mechanical activation, comprising the steps of high-speed deformation, polygonization and recrystallization.

Investigation of pre-sprayed powders for electric contact welding

2020 ◽  
pp. 143-149
Author(s):  
Dinar R. Masalimov ◽  
Roman R. Galiullin ◽  
Rinat N. Sayfullin ◽  
Azamat F. Fayurshin ◽  
Linar F. Islamov
Keyword(s):  
Adhesion Strength ◽  
Electrical Contact ◽  
Research Purpose ◽  
Flame Spraying ◽  
Powder Materials ◽  
Electric Contact ◽  
Metal Powders ◽  
Unstable Flow ◽  
Gas Flame ◽  
Contact Welding

There are a number of difficulties in the electrical contact welding of powder materials: shedding of powder from the surface of a cylindrical part, impossibility of hardening the layer during welding due to flushing of the powders with coolant and unstable flow of powder into the welding zone. One solution is pre-spraying the powder in some way. (Research purpose). The research purpose is investigating the possibility of electric contact welding of metal powders preliminarily sprayed by a gas-flame method, namely, adhesion strength and losses during preliminary gas-flame spraying of powders. (Materials and methods) Powders of grades PG-NA-01, PrKhIIG4SR, PRZh3.200.28 were sprayed onto flat samples of St3 steel, polished to a roughness of Ra 1.25. The strength of powder adhesion to the base was studied by the cut method. (Results and discussion) The percentage loss of the powder as a whole is 3-23 percent for all the distances studied. The greatest powder losses appear at a distance of more than 180 millimeter from the tip of the burner for powders of grades PG-NA-01 and PrKhIIG4SR. The smallest powder losses were observed for PrZh3.200.28 powder, which totaled 3-7 percent. The maximum adhesion strength of the sprayed powders to the surface was 22.1 megapascals' when spraying the PG-NA-01 powder. The adhesion strength of powders of the grades PrKhIIG4SR and PrZh3.200.28 is small and amounts to 0.2-3 megapascals'. (Conclusions) The use of preliminary flame spraying of powders for their further electric contact welding is possible using PG-NA-01 grade powder, while the best adhesion to the base (that is more than 20 megapascals') is achieved with a spraying distance of 120-140 millimeter. The smallest powder losses during flame spraying are achieved at a spraying distance of 100-160 centimeters', at which the powder loss for the studied grades was 4-12 percent.

The Research of Spraying SiC/Cu Electronic Packaging Composites

2011 ◽  
Vol 284-286 ◽  
pp. 620-623
Author(s):  
Ming Hu ◽  
Jing Gao ◽  
Yun Long Zhang
Keyword(s):  
Thermal Conductivity ◽  
Thermal Expansion ◽  
Process Parameters ◽  
Electronic Packaging ◽  
High Speed ◽  
Volume Fraction ◽  
Flame Spraying ◽  
Packaging Materials ◽  
Excellent Performance ◽  
Chemical Plating

The SiC/Cu electronic packaging composites with excellent performance were successfully prepared by the chemical plating copper on the surface of SiC powders and high-speed flame spraying technology. The results showed that the homogeneous dense coated layers can be obtained on the surface of SiC powder by optimizing process parameters. The volume fraction of SiC powders in the composites could significantly increase and figure was beyond 55vol% after spraying Copper. The SiC and Cu were the main phases in the spraying SiC/Cu electronic packaging composite, at the same time Cu2O can be tested as the trace phase. The interface combination properties of SiC/Cu in the hot-pressed samples can obviously improve. The thermal expansion coefficient and thermal conductivity of SiC/Cu electronic packaging composite basic can satisfy the requirements for electronic packaging materials.

Corrosion Resistance of VC–FeCr and VC–FeCrСо Coatings Obtained by Supersonic Gas-Flame Spraying

2019 ◽  
Vol 54 (4) ◽  
pp. 535-541 ◽  
Author(s):  
М. М. Student ◽  
H. V. Pokhmurs’ka ◽  
Kh. R. Zadorozhna ◽  
H. H. Veselivs’ka ◽  
V. М. Hvozdets’kyi ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Flame Spraying ◽  
Gas Flame

Varying of Oil Consumption of Fluid-Film Bearing’s Surface Layer by Means of Application of Anti-Friction Coatings

2018 ◽  
Vol 284 ◽  
pp. 1263-1267
Author(s):  
Alexey Yu. Rodichev ◽  
A.V. Sytin ◽  
V.O. Tyurin
Keyword(s):  
Surface Layer ◽  
Steel Substrate ◽  
Thermal Spraying ◽  
Fluid Film ◽  
Flame Spraying ◽  
Oil Consumption ◽  
Fluid Film Bearings ◽  
Inner Surface ◽  
Accessible Method ◽  
Gas Flame

Gas flame spraying is the most accessible method of gas-thermal spraying. Pores are formed on the inner surface of the bimetallic fluid-film bearings as a result of the application of anti-friction coating on the steel substrate. The presence of such pores, the "microfibre effect", affects positively on life expectancy of fluid-film bearings. The study of the oil consumption of anti-friction coatings allows recommendation of these coatings for using in the manufacturing process of bimetallic fluid-film bearings.

Technology of Powder Coatings Application by Gas-Flame Spraying Using Oxyhydrogen Flame

2017 ◽  
Vol 906 ◽  
pp. 80-87 ◽  
Author(s):  
G. Barsukov ◽  
V.V. Barabash ◽  
A.Yu. Rodichev ◽  
O. Kozhus
Keyword(s):  
Powder Material ◽  
Adhesive Strength ◽  
Flame Spraying ◽  
Powder Coatings ◽  
Gas Flame ◽  
Oxyhydrogen Flame

In the article the equipment, method and the results of researches of strength of gas-flame coatings cohesion with the base are presented. The dependence of adhesive strength on spraying modes of powder material by oxyhydrogen flame is established and described. Recommendations on choosing the gas-flame spraying modes are developed.

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