scholarly journals SHAPING ERROR OF SOLIDS OF REVOLUTION AT USE OF RAPID PROTOTYPING TECHNOLOGIES

2016 ◽  
Vol 2016 (3) ◽  
pp. 177-183
Author(s):  
Максим Ларионов ◽  
Maksim Larionov ◽  
Михаил Куликов ◽  
Mikhail Kulikov ◽  
Денис Гусев ◽  
...  
Keyword(s):  
Surface Layer ◽  
Rapid Prototyping ◽  
Cylindrical Surface ◽  
Computer Models ◽  
Arithmetic Mean ◽  
Cylindrical Shape ◽  
Direct Light ◽  
Shaping Error ◽  
Surface Layer Quality ◽  
Empirical Investigations

The purpose of the work was the study of error appearance in cylindrical surfaces at prototyping. To achieve the purposed specified there were developed sketches of parts of “cylinder” type. On the basis of the sketches there were created 3D computer models in the CAD medium. Cylinder growth took place at an angle of 90° to a basic surface of a working platform with a pitch of a platform z=50 mkm at the thickness of a layer hc=0.005 mkm. Among basic requirements made for cylinders under investigations consist in circularity and cylindrical shape and also surface layer quality according to an arithmetic mean of Ra. Parts were typed according to the technology of quick prototyping (Rapid Prototyping - RP) – Direct Light Projection – DLP of hightemperature resin. To obtain data calculated there was used a simulator of A.I. Grabchenko which underwent some changes and was used for the technology of DLP rapid prototyping. For more accurate and deep investigations a coordinate measuring Metris LKV machine for the elevation of a surface layer quality was used. It is evident from the results presented that at empirical investigations of a cylindrical surface grown according to the technology of DLP rapid prototyping and at the computation of shaping error the results convergence makes 96.6.3%.

scholarly journals Rated definition of degree of cutter coating influence upon parameters of surface layer quality of parts worked

2017 ◽  
Vol 2 (7) ◽  
pp. 20-24
Author(s):  
Вячеслав Безъязычный ◽  
Vyacheslav Bezyazychnyy ◽  
Максим Басков ◽  
Maksim Baskov
Keyword(s):  
Surface Roughness ◽  
Surface Layer ◽  
Residual Stresses ◽  
Layer Surface ◽  
Wear Resistant Coatings ◽  
Cutter Wear ◽  
Definition Of ◽  
Surface Layer Quality ◽  
The Impact

The impact of cutter wear-resistant coatings upon cutting process parameters and characteristics of surface layer quality in the parts worked: residual stresses, a degree and a depth of work hardening of a surface layer, surface roughness is investigated.

scholarly journals Problems of Analyzing Microstructure Images in Assessing the Impact of Technological Parameters of Combined Strain Wave Hardening on the Quality of the Surface Layer

2019 ◽  
Author(s):  
Андрей Киричек ◽  
Andrey Kirichek ◽  
Дмитрий Соловьев ◽  
Dmitriy Solovyev ◽  
Александр Хандожко ◽  
...  
Keyword(s):  
Surface Layer ◽  
Thermal Treatment ◽  
Strain Wave ◽  
Technological Parameters ◽  
Steel Microstructure ◽  
Main Indicator ◽  
Metallographic Images ◽  
Surface Layer Quality ◽  
The Impact

The problems of analyzing metallographic images and the method of their solution using modern software for the analysis of metallographic images are described. There is given an analysis of microstructure images as the main indicator of the surface layer quality by the example of studying the research results of strain wave hardening combinations and chemical-thermal treatment, in particular the influence of previous strain wave hardening and subsequent thermal and chemical- thermal treatment on the alloy steel microstructure or previous thermal and chemical- thermal treatment and subsequent strain wave hardening. On the basis of the analysis the effectiveness of strain wave hardening and chemical and thermal treatment is established.

Acoustic and Emission Control of the Hereditable Stress and Strain State of the Metal Surface Layer during Cutting and Surface Plastic Deformation

2015 ◽  
Vol 788 ◽  
pp. 3-10
Author(s):  
Valeriy Yu. Blumenstein ◽  
Fyodor I. Panteleenko ◽  
Igor V. Miroshin ◽  
Oleg A. Ostanin
Keyword(s):  
Plastic Deformation ◽  
Acoustic Emission ◽  
Surface Layer ◽  
Shear Deformation ◽  
Surface Plastic Deformation ◽  
Surface Plastic ◽  
Deformation Degree ◽  
Emission Signal ◽  
Experimental Findings ◽  
Surface Layer Quality

Methods and experimental findings shown describe how mechanical parameters of the surface layer behavior and acoustic emission signals are interconnected.Experimental study was carried out under conditions of simple single-and dual stage compression. Graphic and analytic dependencies between the counting rate of the acoustic emission Ṅ and the shear deformation degree Λ were revealed. The findings describing dual compression show that the acoustic emission method is sensitive to the material stressing history.The dependency of the acoustic emission signal energy on the pre-stressing program was found, which helped establish that, with values of the plasticity reserve depletion being equal for all experimental specimens, the accumulated shear deformation degree Λ was different.The findings describing the hereditable physical state of the strengthened surface layer of parts during cutting and surface plastic deformation are presented in the paper. The study was carried out using the methods of property accumulation control in deformation sites depending on treatment modes with real-time monitoring of acoustic emission signals. A peculiar feature of these methods is the use of visual recording of the metal plastic flow to be further used in calculating the hereditable parameters of the surface layer quality.

The Analysis of Finishing Tooling Influence on Contact Fatigue Researched by Profilometer

2013 ◽  
Vol 199 ◽  
pp. 117-122
Author(s):  
Wojciech Labuda ◽  
Adam Charchalis
Keyword(s):  
Surface Roughness ◽  
Surface Layer ◽  
Contact Fatigue ◽  
Roughness Coefficient ◽  
304L Stainless Steel ◽  
Technological Parameters ◽  
Research Results ◽  
Burnishing Process ◽  
Relative Hardness ◽  
Surface Layer Quality

The article presents the research results referring to the analysis of the influence of finish treatment ( lathing, grinding, burnishing) on the contact fatigue of steel applied to marine pump shafts. The research was performed on a roller 40 mm in diameter made of 304L stainless steel. Within the research, the optimalization of burnishing technological parameters was conducted on account of the minimalization of Ra surface roughness coefficient as well as the maximalization of SU degree of surface layer relative hardness [. The multi criteria optimalization conducted by min-max method [ with regard to minimum surface roughness as well as maximum degree of surface layer hardness demonstrated that burnishing process should be carried out at the following technological parameters: burnishing force 1.1 kN, burnishing speed 35 m/min, feed 0.13 mm/rev. In addition, the influence of the burnisher passes number on the surface layer quality was determined [.The paper will present the research results of contact fatigue examination of samples after finish machining.

Surface-layer quality after high-speed turning of hard material

2014 ◽  
Vol 34 (6) ◽  
pp. 423-424
Author(s):  
I. E. Kiryushin ◽  
D. E. Kiryushin ◽  
S. B. Venig ◽  
T. G. Nasad ◽  
M. O. Stepanova ◽  
...  
Keyword(s):  
Surface Layer ◽  
High Speed ◽  
Hard Material ◽  
High Speed Turning ◽  
Surface Layer Quality

Influence of the microstructure of Al–Si alloy on the surface-layer quality in microarc oxidation

2017 ◽  
Vol 37 (4) ◽  
pp. 314-317
Author(s):  
S. K. Kiseleva ◽  
L. I. Zainullina ◽  
M. M. Abramova ◽  
A. A. Khazgalieva ◽  
N. Yu. Dudareva ◽  
...  
Keyword(s):  
Surface Layer ◽  
Microarc Oxidation ◽  
Surface Layer Quality

An accelerated method of inspecting the surface-layer quality of parts during machining

1981 ◽  
Vol 17 (1) ◽  
pp. 91-93
Author(s):  
P. A. Rutman ◽  
N. V. Pertsov ◽  
V. S. Lobantsova
Keyword(s):  
Surface Layer ◽  
Surface Layer Quality
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