Comparison of aluminum coatings deposited by flame spray and by electric arc spray

2007 ◽  
Vol 202 (1) ◽  
pp. 172-179 ◽  
Author(s):  
Regina M. H. Pombo Rodriguez ◽  
Ramon S.C. Paredes ◽  
Schereiner H. Wido ◽  
Alfredo Calixto
Keyword(s):  
Electric Arc ◽  
Flame Spray ◽  
Aluminum Coatings ◽  
Arc Spray

Cored Wire Application Using Electric Arc Spray

1998 ◽  
Author(s):  
E.R. Sampson
Keyword(s):  
Trend Analysis ◽  
Thermal Spraying ◽  
Electric Arc ◽  
Cored Wire ◽  
Arc Spray ◽  
New Development ◽  
The Future ◽  
Cored Wires

Abstract The use of cored wires for thermal spraying is a relatively new development that is being rapidly utilized for arc spray in a wide variety of applications. This paper will discuss the existing applications and industries in which cored wire coatings are used. Additionally, this presentation will cover the effect cored wires have had on the use ofother types ofthermal spray equipment. The paper will close with a trend analysis that discusses the applications of the future.

The Electric Arc Spray Manufacture of Rapid Production Tooling: A Case Study

1998 ◽  
Author(s):  
A.P. Newbery ◽  
P.S. Grant ◽  
R.M. Jordan ◽  
A.D. Roche ◽  
T.C. Carr
Keyword(s):  
Injection Moulding ◽  
Low Cost ◽  
Spray Forming ◽  
Electric Arc ◽  
Internal Stresses ◽  
Forming Process ◽  
Polymer Injection ◽  
Spray Process ◽  
Arc Spray ◽  
The U.S

Abstract The manufacture of tooling using the electric arc spray process to spray steel directly onto a master pattern offers substantial reductions in the lead times required to make complex tooling for polymer injection moulding and other applications. The process of spray forming is fast, efficient, and low cost, and has been shown to be dimensionally accurate with proper control over the residual stresses that develop during spraying. Poor dimensional control because of high internal stresses in thick arc sprayed steel coatings is well known, but these problems can be avoided by the use of correct spraying conditions. This paper describes the STD SPRAYFORM process for the manufacture of tooling for the polymer injection moulding of a component for a leading company in the U.S. The steps in the spray forming process, both before and after spraying, are described. The spray forming route competed directly with a traditional method for toolmaking and considerably reduced the lead time from order to completion. The tooling produced by spray forming has been operating commercially in production in the U.S. and has to date produced in the region of half a million parts without appreciable wear. The incorporation of contoured cooling channels during spraying has enabled plastic injection moulding cycle times to be decreased by 15%.

Correlations between In-Flight Particles, Splats and Coating Microstructures of Ni20Cr Thermally Sprayed by Flame and Arc Spray Processes

2007 ◽  
Vol 534-536 ◽  
pp. 409-412
Author(s):  
Pisit Apichayakul ◽  
Sittichai Wirojanupatump ◽  
Sukanda Jiansirisomboon
Keyword(s):  
Size Distribution ◽  
Splat Morphology ◽  
Flame Spray ◽  
Spray Process ◽  
Arc Spray ◽  
Lower Porosity ◽  
Coating Formation ◽  
Coating Microstructure ◽  
Higher Temperature ◽  
Thermally Sprayed

Correlations between in-flight particle, splat and coating microstructure of thermally sprayed Ni20Cr were investigated. Flame spray and arc spray systems were employed for spraying Ni20Cr powder and Ni20Cr wire, respectively. The results showed that the arc spray process produced a broader size distribution for both in-flight particles and splats compared to flame process. Flower-like splat morphology was obtained from the arc spray whereas a pancake-like splat was obtained by flame spray. Ni20Cr coating sprayed by arc process had a denser microstructure, lower porosity and better adhesion at the interface. This could be due to the higher temperature and velocity from the arc spray process enhancing the melting and adhering for coating formation.

Characterisation of electric arc spray formed Ni superalloy IN718

2002 ◽  
Vol 326 (1) ◽  
pp. 79-91 ◽  
Author(s):  
Matthew K Hedges ◽  
A.P Newbery ◽  
P.S Grant
Keyword(s):  
Electric Arc ◽  
Arc Spray

Scientific, Technological, and Economic Aspects of Rapid Tooling by Electric Arc Spray Forming

2006 ◽  
Vol 15 (4) ◽  
pp. 796-801 ◽  
Author(s):  
P.S. Grant ◽  
S.R. Duncan ◽  
A. Roche ◽  
C.F. Johnson
Keyword(s):  
Spray Forming ◽  
Rapid Tooling ◽  
Electric Arc ◽  
Economic Aspects ◽  
Arc Spray

scholarly journals THE RESEARCH OF PSEUDO COATINGS SPRAYED WITH ELECTRIC ARC SPRAY / PSEUDODANGŲ, UŽPURKŠTŲ ELEKTROLANKINIU BŪDU, TYRIMAS

2017 ◽  
Vol 8 (6) ◽  
pp. 602-608
Author(s):  
Tomas Rodžianskas ◽  
Ovidijus Jarašiūnas ◽  
Irmantas Gedzevičius ◽  
Gediminas Mikalauskas ◽  
Justinas Gargasas ◽  
...  
Keyword(s):  
Power Source ◽  
Electric Arc ◽  
Arc Spraying ◽  
Main Task ◽  
Arc Spray ◽  
Tribological Coatings ◽  
Steel Aisi ◽  
Aisi 316 ◽  
Spraying Process ◽  
Stainless Steel Aisi

The paper presents coatings obtained using two different stainless steel (AISI 316) and marine bronze (CuAl8) wires sprayed with electric arc spraying. Substrate: mild steel S235J2 (LST EN 10025: 2004). Arc spray equipment – “EuTronic Arc Spray 4” with an additional power source. The main task was to select optimal technological spraying process and obtain coatings which possess the best mechanical, physical, tribological properties that meet the requirements of the specific requirements in service coatings. The microhardness, elastic modulus, and morphology was examined. Dry friction wear was assessed in the mass loss of the coatings. The results of tribological coatings properties were assessed in determining the mass lost. Straipsnyje nagrinėjamos elektrolankinio purškimo būdu suformuotos dangos, gautos užpurškus dvi skirtingas pilnavidurės nerūdijančiojo plieno (AISI 316) ir jūrinės bronzos (CuAl8) vielas. Substratas – mažaanglis plienas S235J2 (LST EN 10025:2004). Elektrolankinio purškimo įranga – „EuTronic Arc Spray 4“ su papildomu srovės šaltiniu. Eksperimentų metu siekiama parinkti optimalų technologinį purškimo procesą ir gauti dangas, pasižyminčias geriausiomis mechaninėmis, fizikinėmis, tribologinėmis savybėmis, kurios atitinka konkrečius keliamus reikalavimus eksploatuojamoms dangoms. Nustatytas dangų mikrokietumas, tamprumo modulis ir nagrinėta dangų morfologija. Dangų tribologiniai rezultatai vertinti nustatant prarastąją bandinių masę.

scholarly journals Electric arc spray coatings for the naval industry

2011 ◽  
Vol 4 (8) ◽  
pp. 31
Author(s):  
Laura Marcela Dimate Castellanos ◽  
José Alfredo Morales Torres ◽  
Jhon Jairo Olaya Florez
Keyword(s):  
Abrasive Wear ◽  
Electric Arc ◽  
X Ray Diffraction ◽  
X Ray ◽  
Spray Coatings ◽  
Arc Spray ◽  
Thermal Barriers ◽  
Before And After ◽  
Coating Microstructure ◽  
Steel Substrates

Carbon and stainless steel, as well as Fe-Nb-Cr-W coatings were deposited on steel substrates by using electric arc spray, and its possibility of applying such coatings in the naval industry was analyzed. In order to achieve this, the coating microstructure was characterized before and after the corrosion, abrasive wear, and thermal barrier tests. Corrosion resistance was analyzed via potenciodynamic polarization test using a NaCl electrolyte at 3%; abrasive wear resistance was measured by using a three-component system following ASTM G-65 recommendations, while quality control as thermal barriers was studied by using EIS tests. Scanning Electron Microscopy, optical microscopy and X-ray diffraction were used to characterize the microstructure of the coatings.

Development of an Electric Arc Sprayed Self Lubricating Coating

1998 ◽  
Author(s):  
H. Llewellyn ◽  
P.S. Grant ◽  
A.P. Newbery ◽  
R.M. Jordan
Keyword(s):  
Deposition Rate ◽  
Grain Morphology ◽  
Industrial Applications ◽  
Drill String ◽  
Electric Arc ◽  
Spray Parameters ◽  
Analytical Treatment ◽  
Arc Spray ◽  
Powder Particles ◽  
Coating Temperature

Abstract Electric arc sprayed coatings with a disperse lubricating phase have potential for use in a variety of industrial applications as bearing materials including low friction coatings for drill string joints in the oil industry to reduce casing wear and lower drilling torque. This paper describes the optimisation of electric arc spray parameters for Fe-0.06wt.%C that will subsequently be used as a self-lubricating coating matrix. The effect of electric arc spray parameters on the microstructure of a Fe-0.06wt.%C matrix has been characterised in terms of deposition rate, temperature during manufacture, porosity and microhardness. It has been shown that the local coating temperature during directly affects the fmal coating porosity, grain size, grain morphology and microhardness. The most effective parameter in controlling coating temperature was the coating deposition rate. The Fe0.06wt.% C coating microstructure was primary equiaxed ferrite with a dispersion of spherodised Fe3C particles formed from the in-situ tempering of the as-sprayed martensite or bainite during spraying. A fuller analytical treatment of these phenomena is given elsewhere (13). Fe-0.06wt.%C powder particles microstructure was primarily bainitic or martensitic. A small number of Fe-0.06wt.%C powder particles showed a dendritic phase which has been proposed as retained austenite because of austenite stabilisation by fme grains and the N2 atmosphere, or an unidentified nitride layer.

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