Technological capabilities for control of effective cold working depth of surface layer by wave strain hardening

2021 ◽  
pp. 73-76
Author(s):  
A.V. Kirichek ◽  
D.L. Solov’ev ◽  
S.A. Silant’ev ◽  
S.V. Barinov ◽  
A.V. Yashin
Keyword(s):  
Surface Layer ◽  
Strain Hardening ◽  
Cold Working ◽  
Quality Parameters ◽  
Technological Capabilities ◽  
Flat Surfaces ◽  
Wave Deformation ◽  
Hardened Surface

The parameters of wave deformation are described. The results of studies of the effect of the diameter of the instrument used for wave deformation of flat surfaces on the quality parameters of the hardened surface layer are presented. A significant increase in depth and degree of hardening after processing has been established, and the parameters of the tool and the technology of its application to obtain the most effective results have been determined.

Kryogenes Fräsen additiv gefertigter Bauteile/Cryogenic milling of additively manufactured components

2021 ◽  
Vol 111 (11-12) ◽  
pp. 824-828
Author(s):  
Kevin Gutzeit ◽  
Sebastian Greco ◽  
Benjamin Kirsch ◽  
C. Jan Aurich
Keyword(s):  
Surface Layer ◽  
Strain Hardening ◽  
Surface Quality ◽  
Industrial Applications ◽  
Cryogenic Cooling ◽  
Cryogenic Milling ◽  
Cooling Strategy ◽  
Hardened Surface ◽  
Eine Verbesserte

Die erreichbare Oberflächenqualität additiv gefertigter Bauteile ist für industrielle Anwendungen häufig unzureichend. Daher ist eine in der Regel spanende Nachbearbeitung der Bauteile unumgänglich. In diesem Beitrag wird die spanende Nachbearbeitung durch eine kryogene Kühlung ergänzt. Hierdurch wird die thermische Belastung in der Werkstückrandschicht reduziert, um so eine Kaltverfestigung zu begünstigen. Es konnte eine verbesserte Oberflächenqualität sowie eine Randschichthärtung realisiert werden.   The surface quality of additively manufactured components is often insufficient for industrial applications. As a result, additional processes are necessary to improve the surface quality. In the investigations presented, a cryogenic cooling is used when milling additively manufactured components. The cryogenic cooling strategy favors the introduction of strain hardening effects into the surface layer. An improved surface quality as well as a hardened surface layer were realized.

Study of effect of technological lubricant type and parameters of tool surface layer on characteristics of multitoothed mandrelling methods of holes

2020 ◽  
pp. 246-251
Author(s):  
A.V. Shchedrin ◽  
I.Yu. Ignatkin ◽  
N.Yu. Chikhacheva
Keyword(s):  
Surface Layer ◽  
Quality Parameters ◽  
Tool Surface ◽  
Geometric Quality ◽  
Technological Lubricant

The regularities of the change in the mandrelling forces and the geometric quality parameters of the obtained holes depending on the type of technological lubricant and the parameters of the tool surface layer that implements the scheme of sequential multi-tooth mandrelling are experimentally studied.

Effect of diamond burnishing parameters on the state of the processed surface layer of billets made of high-strength "30ХГСН2А-ВД" steel

2020 ◽  
pp. 82-86
Author(s):  
A.N. Shvetsov ◽  
D.L. Skuratov
Keyword(s):  
Surface Layer ◽  
Residual Stresses ◽  
Strain Hardening ◽  
Processing Speed ◽  
Synthetic Diamond ◽  
High Strength ◽  
The State ◽  
Diamond Burnishing

The influence of the burnishing force, tool radius, processing speed and feed on the distribution of circumferential and axial residual strses, microhardness and the depth of strain hardening in the surface layer when pr ssing of "30ХГСН2А-ВД" steel with synthetic diamond "ACB-1" is considered. Empirical dependencies determining these parameters are given. Keywords diamond burnishing, strain hardening depth, circumferential residual stresses, axial residual stresses, microhardness. [email protected], [email protected]

scholarly journals SCC Behavior at Hardened Surface Layer of 316(LC) in Water on High Temperature

2009 ◽  
Vol 58 (6) ◽  
pp. 228-233 ◽  
Author(s):  
Kiyoko Takeda ◽  
Akira Taniyama ◽  
Takeo Kudo ◽  
Hitoshi Uchida ◽  
Jun-ichiro Mizuki
Keyword(s):  
Surface Layer ◽  
High Temperature ◽  
Hardened Surface

scholarly journals Generation Mechanism of Work Hardened Surface Layer in Metal Cutting

2004 ◽  
Vol 47 (1) ◽  
pp. 405-411 ◽  
Author(s):  
Rikio HIKIJI ◽  
Eiji KONDO ◽  
Norio KAWAGOISHI ◽  
Minoru ARAI
Keyword(s):  
Surface Layer ◽  
Metal Cutting ◽  
Generation Mechanism ◽  
Hardened Surface

scholarly journals Quality assurance of ring gear in cylindrical wheels at processing with combined grinding-polishing worm disk

2019 ◽  
Vol 2018 (2) ◽  
pp. 22-28
Author(s):  
Владимир Макаров ◽  
Vladimir Makarov ◽  
Наталья Ворожцова ◽  
Natalia Vorozhtsova ◽  
Александр Горбунов ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Surface Layer ◽  
Quality Parameters ◽  
Experimental Investigations ◽  
Ring Gear ◽  
Micro Hardness ◽  
Gear Grinding ◽  
Gear Honing ◽  
Surface Residual Stresses ◽  
Comparative Results

The investigation results of technological potentialities in the finish gear grinding of a ring gear of cylindrical wheels with the combined grinding-polishing worm disk with the assurance of geometrical accuracy and quality parameters of a surface layer are shown. The comparative results of experimental investigations of the structure of surface micro-hardness, its depth and surface residual stresses at cog-wheels finish processing with gear honing and gear polish are given.

scholarly journals Profile and contour grinding of compressor blade butts

2016 ◽  
Vol 1 (1) ◽  
pp. 15-19
Author(s):  
В. Полетаев ◽  
V. Poletaev ◽  
Е. Цветков ◽  
E. Tsvetkov
Keyword(s):  
Surface Layer ◽  
Coordinate System ◽  
Quality Parameters ◽  
Compressor Blade ◽  
Improve Performance ◽  
Compressor Blades ◽  
Part Surface ◽  
Required Quality ◽  
Blade Production

The existing technologies of production of compressor blade butts related with traditional machining methods, including broaching and milling. Application of these machining methods requires further superfinishing operations to ensure the required quality of compressor blades. The automated highly-productive grinding of blade butts is an effective method to improve performance and quality of blade production. The technologies of profile and contour grinding of blades of a rotor and a compressor stator provide an automated machining of the outer parts contour in the same coordinate system, implement machining based on 3-D models of theoretical blade surfaces, ensure the required quality parameters of the part surface layer without additional finishing operations.

Surface modification of die steels with B—Al-layers by thermal-chemical treatment

2021 ◽  
pp. 557-564
Author(s):  
N.S. Ulakhanov ◽  
U.L. Mishigdorzhiyn ◽  
A.G. Tikhonov ◽  
A.I. Shustov ◽  
A.S. Pyatykh
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Surface Layer ◽  
Surface Modification ◽  
High Temperature ◽  
Chemical Treatment ◽  
Quality Parameters ◽  
Processing Temperature ◽  
Die Steels ◽  
Composite Layers

The effect of diffusion high-temperature boroaluminizing (HBA) on the mechanical properties and quality parameters of the surface layer of stamp steels 5KhNM and 3Kh2V8F is shown. An analysis of the microstructure and composition of diffusion composite layers obtained as a result of thermal-chemical treatment (TCT) is presented and the distribution of microhardness in these layers is studied depending on the formed borides and carbides. The influence of processing temperature modes of on the parameters of roughness was experimentally established and the wear resistance characteristics of the processed surfaces of the investigated materials were determined.

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