COMPREHENSIVE INVESTIGATION OF EXTRUSION OF П-SHAPED BRACKETS. REPORT 6. KINEMATIC AND STRESSED STATES OF BLANKET DURING RESTRICTED EXTRUSION. PART 3

2021 ◽  
pp. 40-45
Author(s):  
A. L. Vorontsov ◽  
◽  
S. M. Karpov ◽  
Keyword(s):  
Plastic Flow ◽  
Geometric Parameter ◽  
Plane Deformation ◽  
Flow Theory ◽  
Equation System ◽  
Extrusion Process ◽  
Technological Parameters ◽  
Comprehensive Investigation

On the basis of the complete equation system of the plastic flow theory, the solution continuation of the determination problem of the kinematic and stressed states of a blanket during partially restricted extrusion of П-shaped brackets under the conditions of plane deformation in the general case of a nonaligned placement of the punch and the die is stated. The determination of the force and geometric parameter of the process was carried out. The formulae were obtained, which are required for identification of the main technological parameters of the extrusion process of П-shaped products with a relatively thin horizontal bridge.

COMPREHENSIVE INVESTIGATION OF EXTRUSION OF П-SHAPED BRACKETS. REPORT 6. KINEMATIC AND STRESSED STATES OF BLANKET DURING RESTRICTED EXTRUSION. PART 4

2021 ◽  
pp. 51-54
Author(s):  
A. L. Vorontsov ◽  
◽  
S. M. Karpov ◽  
Keyword(s):  
Plastic Flow ◽  
Geometric Parameter ◽  
Plane Deformation ◽  
Flow Theory ◽  
Equation System ◽  
Extrusion Process ◽  
Technological Parameters ◽  
Comprehensive Investigation

On the basis of the complete equation system of the plastic flow theory, the solution of the determination problem of the kinematic and stressed states of a blanket during completely restricted extrusion of П-shaped brackets under the conditions of plane deformation in the general case of a nonaligned placement of the punch and the die is stated. The determination of the force and geometric parameter of the process was carried out. The formulae were obtained, which are required for determination of the main technological parameters of the extrusion process of П-shaped products with a relatively thin horizontal bridge.

COMPREHENSIVE INVESTIGATION OF EXTRUSION OF П-SHAPED BRACKETS. REPORT 6. KINEMATIC AND STRESSED STATES OF BLANKET DURING RESTRICTED EXTRUSION. PART 2

2021 ◽  
pp. 38-43
Author(s):  
A. L. Vorontsov ◽  
◽  
S. M. Karpov ◽  
Keyword(s):  
Plastic Deformation ◽  
Plastic Flow ◽  
Plane Deformation ◽  
Flow Theory ◽  
Equation System ◽  
Extrusion Process ◽  
Thick Wall ◽  
Comprehensive Investigation ◽  
Flow Velocities

On the basis of the complete equation system of the plastic flow theory, the solution continuation of the determination problem of the kinematic and stressed states of a blanket during restricted extrusion of П-shaped brackets under conditions of plane deformation in the general case of a nonaligned placement of the punch and the die is stated. The determination of flow velocities and stresses in the area of plastic deformation, located under the punch end near the formed thick wall of the bracket has been carried out. The formulae were obtained, which are required for identification of the main parameters of the extrusion process of П-shaped products with a relatively thin horizontal bridge.

COMPREHENSIVE INVESTIGATION OF EXTRUSION OF П-SHAPED BRACKETS. REPORT 6. KINEMATIC AND STRESSED STATES OF BLANKET DURING RESTRICTED EXTRUSION. PART 1

2021 ◽  
pp. 33-40
Author(s):  
A. L. Vorontsov ◽  
◽  
S. M. Karpov ◽  
Keyword(s):  
Plastic Deformation ◽  
Plastic Flow ◽  
Plane Deformation ◽  
Flow Theory ◽  
Equation System ◽  
Extrusion Process ◽  
Thick Wall ◽  
Comprehensive Investigation ◽  
Flow Velocities

On the basis of the complete equation system of the plastic flow theory, the solution origination of the determination problem of the kinematic and stressed states of a blanket during restricted extrusion of П-shaped brackets under conditions of plane deformation in the general case of a nonaligned placement of a punch and a die is stated. The determination of flow velocities and stresses in the area of plastic deformation, located under a formed thick wall of the bracket has been carried out. The formulae were obtained, which are required for identification of the main parameters of the extrusion process of П-shaped products with a relatively thin horizontal bridge.

Research of stamping of unequal channel bars. Part 3. Force parameters and shape change of the billet when extruding channels. 2. Determination of the extrusion force, maximum pressure on the matrix wall and the heights of the walls, taking into account the elastic deformation jf the matrix

2021 ◽  
pp. 63-69
Author(s):  
A.L. Vorontsov
Keyword(s):  
Plastic Flow ◽  
Elastic Deformation ◽  
Shape Change ◽  
Plane Deformation ◽  
Maximum Pressure ◽  
Extrusion Force ◽  
System Of Equations ◽  
The Matrix ◽  
Theory Of Plastic Flow

On the basis of the system of equations of the theory of plastic flow, the forces, the maximum pressure on the wall of the matrix and the heights of the obtained walls when extruding channels are determined, taking into account the elastic deformation of the matrix. Keywords: die forging, extrusion, misalignment, punch, matrix, plane deformation, stresses. [email protected]

PUNCHING CUPS WITH BOTTOM FLANGE BY DIRECT EXTRUSION WITH COUNTER-PUNCH. DETERMINATION OF KINEMATIC AND STRESS STATES IN THE SECOND PERIPHERAL REGION OF PLASTIC DEFORMATION

2020 ◽  
pp. 14-19 ◽  
Author(s):  
A. L. Vorontsov ◽  
I. A. Nikiforov
Keyword(s):  
Plastic Deformation ◽  
Plastic Flow ◽  
Extrusion Process ◽  
Peripheral Region ◽  
Maximum Pressure ◽  
Bottom Flange ◽  
The Matrix ◽  
Stress States ◽  
Theory Of Plastic Flow

Using the theory of plastic flow according to the method of A. L. Vorontsov, the formulas are obtained that are necessary for calculating the stresses and force parameters of the extrusion process with counter-punch of the peripheral region adjacent to the container with the matrix. The maximum pressure acting on the matrix wall and the height of the peripheral region of plastic deformation are determined.

PUNCHING CUPS WITH BOTTOM FLANGE BY DIRECT EXTRUSION WITH COUNTER-PUNCH. DETERMINATION OF KINEMATIC AND STRESS STATES IN THE FIRST PERIPHERAL REGION OF PLASTIC DEFORMATION

2020 ◽  
pp. 10-13 ◽  
Author(s):  
A. L. Vorontsov ◽  
I. A. Nikiforov
Keyword(s):  
Plastic Deformation ◽  
Plastic Flow ◽  
Extrusion Process ◽  
Peripheral Region ◽  
Geometric Parameters ◽  
Bottom Flange ◽  
Direct Extrusion ◽  
Stress States ◽  
Theory Of Plastic Flow

Formulas are obtained that relate the current geometric parameters of the extruded blank to the size of the stroke of the punch. Using the theory of plastic flow by the method of A. L. Vorontsov, the formulas are obtained that are necessary for calculating the stresses and force parameters of the extrusion process with the counter-punch of the peripheral region adjacent to the formed wall of the product.

RADIAL EXTRUSION OF A PIPE BILLET WITH INTERNAL LEDGE. DETERMINATION OF KINEMATIC AND STRESS STATES

2021 ◽  
pp. 11-17
Author(s):  
A. L. Vorontsov ◽  
E. O. Reshchikov
Keyword(s):  
Plastic Flow ◽  
Thrust Force ◽  
Extrusion Process ◽  
Maximum Pressure ◽  
The Matrix ◽  
Stress States ◽  
Theory Of Plastic Flow

Using the theory of plastic flow by the method of A. L. Vorontsov, the formulas are obtained that are necessary for calculating the stresses and force parameters of the internal radial extrusion process of a pipe billet. The thrust force acting on the upper mandrel and the maximum pressure acting on the matrix wall are determined.

MANUFACTURE INVESTIGATION OF CARTRIDGE WITH BOTTOM-MOST PART FLANGE BY DIRECT EXTRUSION WITH COUNTERPUNCH. REPORT 13. DETERMINATION OF DEFORMED STATE UNDER STRAITENED EXTRUSION IN FOURTH CENTRAL AREA OF PLASTIC DEFORMATION

2020 ◽  
Vol 0 (4) ◽  
pp. 43-51
Author(s):  
A. L. Vorontsov ◽  
◽  
I. A. Nikiforov ◽  
Keyword(s):  
Plastic Deformation ◽  
Plastic Flow ◽  
Central Area ◽  
Direct Extrusion ◽  
Deformed State ◽  
Cumulative Deformation ◽  
The Given ◽  
General Method

Formulae have been obtained that are necessary to calculate cumulative deformation in the process of straitened extrusion in the central area closed to the working end of the counterpunch. The general method of plastic flow proposed by A. L. Vorontsov was used. The obtained formulae allow one to determine the deformed state of a billet in any point of the given area. The formulae should be used to take into account the strengthening of the extruded material.

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