ADDITIVE PRODUCTS FROM ELECTROEROSION COBALT-CHROMIUM POWDER

Metallurg ◽  
2021 ◽  
pp. 78-81
Author(s):  
E.V. Ageev ◽  
E.V. Ageeva ◽  
A.Yu. Altukhov
Keyword(s):  
Cobalt Chromium ◽  
Chromium Powder

Cobalt-Chromium Powder Alloys and Retention Coatings Made from Them for Orthopaedic Stomatology

2005 ◽  
Vol 44 (5-6) ◽  
pp. 207-210 ◽  
Author(s):  
A. V. Besov ◽  
V. A. Maslyuk ◽  
A. N. Stepanchuk ◽  
S. G. Napara-Volgina ◽  
L. N. Orlova
Keyword(s):  
Cobalt Chromium ◽  
Chromium Powder ◽  
Powder Alloys

scholarly journals Research of mechanical properties of the sintered samples from electro-erosion cobalt-chromium powder

2018 ◽  
Vol 7 (2.2) ◽  
pp. 28
Author(s):  
E V. Ageev ◽  
A Yu. Altukhov ◽  
S V. Pikalov ◽  
V I. Serebrovskii ◽  
R I. Safronov
Keyword(s):  
Mechanical Properties ◽  
Spherical Shape ◽  
Energy Costs ◽  
Cobalt Chromium ◽  
Chromium Powder ◽  
Powder Composition ◽  
Main Requirement ◽  
Supply Systems ◽  
Minimal Resistance ◽  
Cobalt Chrome

The main requirement for powders for additive 3d technologies is the spherical shape of the particles. Such particles are most compactly packed into a certain volume and ensure the "fluidity" of the powder composition in the supply systems of the material with minimal resistance. Proceeding from the peculiarities of the methods for the production of spherical powders with the aim of obtaining spherical granules of regulated granularity, the technology of electroerosive dispersion is proposed, which is characterized by relatively low energy costs and ecological purity of the process. Based on the results of the studies aimed at investigating the mechanical properties of sintered samples from cobalt-chrome powders obtained for additive technologies by electroerosive dispersion, it was established that the average Vickers hardness of sintered samples is 14,63 Gpa; the porosity of the sintered samples is 6,15%.

scholarly journals Investigation of the Finishing Technology of SLM Implants

2021 ◽  
Vol 346 ◽  
pp. 01039
Author(s):  
Timur Ablyaz ◽  
Karim Muratov ◽  
Evgenii Shlykov ◽  
Ilia Osinnikov ◽  
Luiza Konogorova
Keyword(s):  
Processing Time ◽  
Geometric Parameters ◽  
Cobalt Chromium ◽  
Chromium Powder ◽  
Electrolytic Polishing ◽  
Chromium Alloys ◽  
Before And After ◽  
Plasma Electrolytic ◽  
Stent Surface

In this research, the use of plasma electrolytic polishing (PEP) as a finishing treatment of materials obtained by the SLM method from CoCr30 cobalt-chromium powder is proposed. To assess the possibility of using this method, a simulator sample was used. The imitation sample was polished for 60 seconds. The roughness and the size of the removal material were measured. Based on the results obtained for the simulator sample, a conclusion was made about the possibility of using PEP technology for finishing the treatment stent. The stent simulator was also polished. The processing time was 30s and 60s. The geometric parameters were measured, and the removal material was calculated. Images of the stent surface were taken before and after PEP. It was found that with an increase in the processing time from 30 to 60 seconds, the allowance removed from all surfaces increases almost twice. The possibility of using the PEP technology as a finishing operation for the manufacture of stents from cobalt-chromium alloys is shown.

Investigation of the structure and properties of reinforced additive products obtained from electroerosive cobalt-chromium powder

2021 ◽  
pp. 232-236
Author(s):  
E.V. Ageev ◽  
E.V. Ageeva ◽  
A.A. Sysoev
Keyword(s):  
Wear Track ◽  
Structure And Properties ◽  
Sintered Steel ◽  
Cobalt Chromium ◽  
Chromium Powder ◽  
High Chromium ◽  
The Coefficient Of Friction ◽  
Steel Aisi ◽  
Friction Path ◽  
Stainless Steel Aisi

The analysis of the wear resistance characteristics of samples sintered from high-chromium electroerosive powders obtained in kerosene on a friction path of 500 m is performed. It was established experimentally that: there is a partial wear of the counterbody and the buildup of the products of wear of the sample on centralo; the magnitude of the wear track of the sample is 383,1 µm to 473,5 mm; the depth of the profile grooves of the wear surface of the sample is 5 microns; the coefficient of friction of the surface of the sample is from 0,228 to 0,826; the wear rate of the counterbody made of Stainless Steel AISI 420 and the sample made of sintered steel 12X17 are 0.016 and 1.138, respectively.

Assessment of wear resistance of hardened additive products made of electroerosive cobalt-chromium powder

2021 ◽  
pp. 73-75
Author(s):  
Keyword(s):  
Wear Resistance ◽  
Wear Track ◽  
Experimental Studies ◽  
Surface Friction ◽  
Sample Surface ◽  
Chromium Alloy ◽  
Cobalt Chromium ◽  
Chromium Powder ◽  
Friction Path ◽  
Wear Products

Experimental studies of the wear resistance of hardened additive products made of electroerosive cobaltchromium powder obtained in alcohol are carried out. With a friction path of 500 m, the following was established: partial wear of the counterbody and adhesion of wear products of the sample to the counterbody; the size of the wear track of the sample; the depth of the profile of the wear groove of the sample surface; friction coefficient; wear of a counterbody made of steel and a hardened sample made of a cobalt-chromium alloy. Keywords: electroerosive cobalt-chromium powder, additive product, hardening, wear resistance. [email protected]

scholarly journals MORPHOLOGY AND ELEMENTAL COMPOSITION OF COBALT-CHROMIUM POUDERS-ALLOYS PRODUCED FOR ADDITIVE TECHNOLOGIES BY ELECROEROSION DISPERSION OF METAL DISCARD IN WATER

2017 ◽  
Vol 21 (4) ◽  
pp. 21-31
Author(s):  
E. V. Ageeva ◽  
A. Yu. Altukhov ◽  
А. G. Ivakhnenko
Keyword(s):  
Experimental Studies ◽  
Component Composition ◽  
Additive Technologies ◽  
Test Material ◽  
Distilled Water ◽  
Chromium Alloy ◽  
Cobalt Chromium ◽  
Chromium Powder ◽  
Working Medium ◽  
Electroerosion Dispersion

Extensive use of electroerosion dispersion (EED) method to recycle metal discard into powders for their re-use in additive technologies is limited by a lack of complete data on the effects of the initial composition, production modes and media on the properties of produced powders and their application technologies. Hence there is a need in new re-use technologies for alloy-powder produced from nichrome scrap and in the assessment of their efficiency, which in its turn requires integrated theoretical and experimental studies. The goal of the presented work was to investigate morphology and element composition of cobalt-chromium alloy-powders that had been produced for additive technologies by eletroerosion dispersion of CCh alloy in distilled water. Research and test material was cobalt-chromium scrap of “TSELIT” alloy grade. The working medium was distilled water. To produce cobalt-chromium powders by electroerosion dispersion an EED plant for current conducting materials. Metal scrap was charged into the reactor filled with working medium, distilled water; the process was run at the following parameters: energy discharge capacitor capacity was 28 mcF, voltage 110 V pulse frequency 100 Hz. The results of the research of the morphology and component composition of cobalt-chromium powder-alloys that had been produced for additive technologies by electroerosion dispersion of cobalt-chromium TSELIT alloy scrap in distilled water demonstrated that the majority of particles in the powder had regular sphere or oval shape, with large amount of surface oxygen, which required additional chemical treatment before use in additive technologies.

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