Plastic deformation of collector plates at electric motor repair

2020 ◽  
pp. 79-82
Author(s):  
D.YU. Belan ◽  
G.B. Toder ◽  
K.V. Averkov ◽  
YU.V. Titov
Keyword(s):  
Plastic Deformation ◽  
Electric Motor ◽  
Roughness Parameter ◽  
Surface Plastic Deformation ◽  
Analytical Dependence ◽  
Surface Plastic ◽  
Machined Surface ◽  
Tool Surface ◽  
Diamond Burnishing ◽  
Traction Electric Motor

A tool was developed for smoothing the plates of an electric motor collector. An analytical dependence of the roughness parameter of the machined surface on the force applied to the tool is obtained. Keywords traction electric motor, collector, diamond burnishing tool, surface-plastic deformation, repair, roughness. [email protected]

Influence of Cutting Speed on Surface Plastic Deformation and White Layer Formation of FGH95

2013 ◽  
Vol 589-590 ◽  
pp. 70-75 ◽  
Author(s):  
Jin Du ◽  
Zhan Qiang Liu
Keyword(s):  
Plastic Deformation ◽  
Surface Integrity ◽  
White Layer ◽  
High Reliability ◽  
Cutting Speed ◽  
Surface Plastic Deformation ◽  
Surface Plastic ◽  
Layer Formation ◽  
Machined Surface ◽  
White Layer Formation

The superalloy parts in the aeronautical field demand high reliability, which is largely related to surface integrity. Surface integrity generally includes three parameters, such as geometric parameter, mechanical parameter and metallurgical parameter. The paper presents the influence of cutting speed on surface plastic deformation and white layer formation through orthogonal milling of FGH95 superally material. The influence of cutting speed on grain refinement of machined surface is also investigated. It is found that cutting speed has significantly effect on the surface metallurgical characteristic microstructure. The increasing of cutting speed creates severer plastic deformation. Surface plastic shear strain increases with the increasing of cutting speed, while the depth of plastic deformation decreases on contrary. White layer thickness is increased with the increasing of cutting speed. Through statistical analysis for grains number, it can be drawn that the higher the cutting speed, the more serious grains refinement.

Using the Simplex Design Technique for Optimization of Modes of Burnishing with Ball Tools

2018 ◽  
Vol 284 ◽  
pp. 1210-1214
Author(s):  
A.V. Tyurin ◽  
N.Ya. Galimova ◽  
A.V. Belyaev
Keyword(s):  
Plastic Deformation ◽  
Surface Plastic Deformation ◽  
Surface Plastic ◽  
Initial Surface ◽  
Design Technique ◽  
High Quality ◽  
Machined Surface ◽  
Damping Effect ◽  
Simplex Design ◽  
Variable Factor

It is advantageous to use the method of surface plastic deformation in order to get high-quality surfaces that meet increased requirements for strength and reliability. For efficient process of surface plastic deformation, it is required to define a set of conditions to provide minimum roughness of a machined surface. The paper addresses the problem of experimental search of optimal burnishing modes using the simplex design to minimize roughness of a machined surface. The significance of variable factor ranking was observed for this technique. A specific set of tests resulted in decrease in the initial surface roughness almost by 15 times in the specimens made of aluminum alloy after burnishing with the steel indenter. It was established that the surface quality was significantly affected by a new factor – angle of indenter contact with the machined surface, which had a damping effect on the machine-fixture-tool-workpiece system. The experiments showed that polished indenter balls significantly lowered the roughness grade of the machined surface under the same conditions.

Modeling of the Contact Interaction of the Tool Indenter with the Part Surface when Processing by Surface Plastic Deformation Methods

2021 ◽  
Vol 1037 ◽  
pp. 564-570
Author(s):  
Vladimir P. Fyodorov ◽  
Maxim N. Nagorkin ◽  
Mikhail L. Kheifetz ◽  
Evgeny A. Polsky
Keyword(s):  
Plastic Deformation ◽  
Steady State ◽  
Contact Interaction ◽  
Quantitative Estimation ◽  
Surface Plastic Deformation ◽  
Resistance Force ◽  
Surface Plastic ◽  
Part Surface ◽  
Diamond Burnishing ◽  
Cylindrical Parts

There are results of studying the parameters of the indenter contact interaction with the surface when processing cylindrical parts made of 45 steel of different hardness by surface plastic deformation (SPD) methods with single-indenter elastic tools (diamond burnishing, ball burnishing). There were considered such characteristics as the resistance force when the indenter starts and in the steady state of SDP, the range of force fluctuations during processing, friction factor when the indenter starts and in the steady state, as well as some derivative coefficients. Adequate physical-statistical models for the quantitative estimation of the contact interaction parameters from SPD processing factors are obtained.

Surface Plastic Deformation of Commutator Plates in Electric-Motor Repair

2020 ◽  
Vol 40 (8) ◽  
pp. 654-657
Author(s):  
D. Yu. Belan ◽  
G. B. Toder ◽  
K. V. Averkov ◽  
Yu. V. Titov
Keyword(s):  
Plastic Deformation ◽  
Electric Motor ◽  
Surface Plastic Deformation ◽  
Surface Plastic

Effect of Surface Hard Layer and Forging Conditions on the Resistance of Plastic Deformation of Hot Forging Tools

2012 ◽  
Vol 706-709 ◽  
pp. 2540-2545
Author(s):  
Akihiro Minami ◽  
Yoshihiro Tabaru ◽  
Yasuo Marumo ◽  
Li Qun Ruan ◽  
Hiroyuki Saiki
Keyword(s):  
Plastic Deformation ◽  
Contact Time ◽  
Layer Structure ◽  
Hot Forging ◽  
Thermal Conductance ◽  
Surface Plastic Deformation ◽  
Equivalent Strain ◽  
Surface Plastic ◽  
Hard Layer ◽  
Tool Surface

Tool damages including plastic deformation and wear are affected by forging load, thermal load and frictional slide applied to tool surface. Plastic deformation of forging tools proceeds in the tool corer owing to elevated temperature, high contact pressure and severe frictional slide. Hard layers on the tool surface increase plastic deformation resistance and thermal resistance. The optimal design of hard layer structure reduces the tool damage and improves tool life. Temperature and equivalent strain of forging tools are influenced by friction shear factor, contact thermal conductance and contact time between the tool and the workpiece. At the friction shear factor of less than 0.4, equivalent strain of the tool is reduced. At the friction shear factor of approximately 0.4 or greater, equivalent strain increases sharply and concentrates in the vicinity of the surface hard layer. This tendency becomes more significant when the contact time between the tool and the workpiece increases. Equivalent strain is reduced by low workpiece temperature.

New methods for surface plastic deformation of low-rigidity cylindrical machine parts

2018 ◽  
Vol 2018 (8) ◽  
pp. 16-24 ◽  
Author(s):  
Семен Зайдес ◽  
Semen Zaides
Keyword(s):  
Plastic Deformation ◽  
Surface Plastic Deformation ◽  
Surface Plastic ◽  
High Productivity ◽  
Surface Strengthening ◽  
New Methods ◽  
Machine Parts

Technological potentialities at finish-strengthening processing of low-rigid parts of shaft- and axle types with local ways of machining impact are rather limited. In the paper there are considered new ways for strengthening allowing obtaining qualitative surface strengthening in machine parts at high productivity of an engineering procedure.

Finish recovery of spools of grease lubricant stations

2021 ◽  
pp. 26-27
Author(s):  
V.A. Korotkov
Keyword(s):  
Plastic Deformation ◽  
Surface Plastic Deformation ◽  
Surface Plastic ◽  
Grease Lubricant

The finish recovery of spools of grease lubricant stations by surface ultrasonic plastic deformation and the use of carbonitration is considered. Keywords: spools, recovery, carbonitration, surface plastic deformation. [email protected]

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