Research into the Effect of Speed Mismatch during Continuous Rolling on the Process Parameters

2021 ◽  
Vol 316 ◽  
pp. 208-213
Author(s):  
Sergey O. Nepryakhin ◽  
Olga V. Vodopyanova
Keyword(s):  
Rolling Process ◽  
Rolling Speed ◽  
Continuous Rolling ◽  
Technological Parameters ◽  
Wire Mill ◽  
Small Deviations ◽  
Simulation Results ◽  
Rolling Torque ◽  
3D Software ◽  
Deform 3D

The paper analyzes the influence of tension (dam) on the technological parameters of the rolling process (spreading, force and rolling torque). For the analysis, a model of continuous rolling in three adjacent stands was developed, using the Deform 3D software. The adequacy of the model was confirmed by comparing the experimental data from the small-section wire mill 150 and the simulation results. The error in determining the forming was 0.4%, and in determining the power parameters was 11%. Further, a computational experiment was planned, to identify the effect of mismatched of rolling speeds on technological parameters. According to the results of calculations, graphs of changes in technological parameters were constructed. It is established that, even small deviations of rolling speed from the matched mode lead to significant changes in technological parameters.

Research the Effect of Speed Mismatch during Continuous Rolling on the Plasticity Margin

2021 ◽  
Vol 410 ◽  
pp. 161-166
Author(s):  
Sergey O. Nepryakhin ◽  
Olga V. Vodopyanova
Keyword(s):  
Experimental Data ◽  
Computational Experiment ◽  
Rolling Speed ◽  
Continuous Rolling ◽  
Wire Mill ◽  
Stress Strain ◽  
Small Deviations ◽  
Simulation Results ◽  
3D Software ◽  
Deform 3D

The paper analyzes the influence of tension (dam) on the stress-strain stain and plasticity margin. For the analysis, a model of continuous rolling in three adjacent stands was developed using the Deform 3D software. The adequacy of the model was confirmed by comparing the experimental data from the small-section wire mill 150 and the simulation results. Further, a computational experiment was planned to identify the effect of mismatched of rolling speeds on stress-strain stain. It is shown that for small deviations of rolling speed from the matched mode, there is no significant change in the reserve plasticity along the specific trajectory of the particles movement.

Study on Precision Forging Schemes of Hypoid Driving Gear

2012 ◽  
Vol 472-475 ◽  
pp. 692-695
Author(s):  
Jian Hua Wang ◽  
Fu Xiao Chen
Keyword(s):  
Equivalent Stress ◽  
Three Dimensional ◽  
Equivalent Strain ◽  
Precision Forging ◽  
Forming Technology ◽  
Blank Shape ◽  
Simulation Results ◽  
Three Dimensional Models ◽  
3D Software ◽  
Deform 3D

By analyzing the characteristics and forming technology of hypoid driving gear, it was suitable for adopting fully enclosed die forging principle to form the gear. Based on different forging methods, three kinds of blank shape and corresponding forming schemes were designed. The three dimensional models of blank and die were created by the UG software. The three forming schemes were simulated by the Deform-3D software. The simulation results of distribution of equivalent stress, distribution of equivalent strain and load-stroke curve were comparatively analyzed. Then the most reasonable scheme was chosen. At last, the rationality of numerical simulation can be further verified by the optimized scheme was proved by experiment.

scholarly journals Effect of gripping conditions and strip oscillations on vibrations originating at cold rolling

2020 ◽  
Vol 76 (1) ◽  
pp. 54-58
Author(s):  
A. V. Kozhevnikov
Keyword(s):  
Cold Rolling ◽  
Rolling Process ◽  
Rolling Speed ◽  
Continuous Rolling ◽  
Rolling Mills ◽  
Deformation Parameters ◽  
High Dynamic ◽  
Working Rollers ◽  
Rolling Mode ◽  
Strip Length

The process of continuous rolling is subjected to non-stationarity, accompanied by oscillations of not only basic technological and power parameters, but also parameters in the hearth of deformation. Non-stationarity at the rolling accounting high dynamic of the process results in origination of negative vibration effects. To prevent the vibrations originations the rolling speed is decreased, which prevents the reaching of the designing parameters of rolling mills operation. The study of influence of non-stationarity of the rolling technological process on gripping conditions and origination of dangerous oscillations was carried out. Characteristics of rolling mode of strip of 2.0–0.45 × 970 mm dimension, accompanied by vibration was presented, as well as graphs of the strip oscillations in the process of stationary rolling and under conditions of vibrations origination presented. An assumption made, that during vibrations origination the gripping conditions of the strip by rollers are disturbed. It means that provision of the grip stationarity will decrease the risk of the vibrations originating at the rolling. The assumption was confirmed by the studies of the cold rolling at five-stand mill 1700 of Cherepovets steel-works. The calculations of the hearth of deformation parameters were made by application of an elaborated dynamic model of the rolling process. The higher probability of vibrations originating at the rolling of strips of smaller thickness explained. It was shown, that due to the strip length, the rolling of the thinner metal is accomplished at higher speeds, comparing with the rolling of thicker metal. In addition, it was shown that the friction coefficient value at that would promote increase of risk of non-stationary rolling mode originating. The support of stable friction conditions in the hearth of deformation is promoted by usage of chrome-plated working rollers and asymmetrical rolling.

The Recrystallization of Corrugated Waist Rail in the Rolling Process

2014 ◽  
Vol 989-994 ◽  
pp. 429-432
Author(s):  
Jin Hong Ma ◽  
Bin Tao ◽  
Xiao Han Yao
Keyword(s):  
Rolling Process ◽  
Rolling Speed ◽  
Deform 3D ◽  
Research Institute

The corrugated waist rail has been successfully rolled in the Mill Research Institute of Yanshan University.Based on commercial FE software of DEFORM-3D, the recrystallization in the rolling process of corrugated waist rail was simulated, the factors affect the recrystallization are analyzed. The different reduces and rolling speed that affect the recrystallization are also analyzed.

Finite Element Simulation of Punch Shear during Hole Piercing in Auto Chain Components

2017 ◽  
Vol 9 (3) ◽  
Author(s):  
K.S. Sekar ◽  
K. Sudhagar ◽  
S.N. Murugesan
Keyword(s):  
Fem Simulation ◽  
Steel Component ◽  
Element Simulation ◽  
Simulation Based ◽  
The Press ◽  
Metal Stamping ◽  
Punch Load ◽  
Simulation Results ◽  
3D Software ◽  
Deform 3D

The capabilities of presses are sometimes limited due to larger cutting force requirement for some sheet metal operations. Reducing the tonnage requirements for such operations will sometimes make the presses capable of doing such operations. FEM simulation can be a reliable tool in predicting the amount of tonnage required for the metal stamping operation. An attempt is taken in this study to analyse the behaviour of the hole piercing operation in an automobile chain part using DEFORM 3D software. The main focus is on the prediction of tonnage requirement with different shear methods on the piercing. Simulations were conducted with flat, single sheared, double sheared, reverse double sheared, convex sheared and concave sheared punches and analyzed for variations in the press load. The phenomena of piercing are also observed through the simulation based on AISI 1060 steel component used for automobile chain as inner plate. Simulation results showed that the shear angles provided on piercing punches will reduce the punch load significantly.

The Modeling of Thread-Rolling Die-Plates Based on the “Design Table” Functions in CAD/CAE/CAM

2011 ◽  
Vol 130-134 ◽  
pp. 499-503
Author(s):  
Yong Jun Jiang
Keyword(s):  
Rolling Process ◽  
Screw Thread ◽  
Microsoft Excel ◽  
Plate Design ◽  
Thread Rolling ◽  
3D Software ◽  
Plate Geometry ◽  
Deform 3D ◽  
Construction System

This paper has successfully developed an integrated automatic taper-tipped die-plates construction system via linking the design table functions in Microsoft Excel underlying SolidWorks CAD software. The developed system can be used to generate 3D thread-rolling die-plate geometry in STL format for further screw thread-rolling process FEA simulations by using DEFORM 3D software. This has concluded that the quality of a taper-tipped screw depends mostly on the die-plate design at the pre-rolling portion.

Effects of Friction on Precision Forging Process of Blade with a Damper Platform

2007 ◽  
Vol 561-565 ◽  
pp. 831-834 ◽  
Author(s):  
Yu Li Liu ◽  
He Yang ◽  
Tao Gao
Keyword(s):  
High Efficiency ◽  
Metal Flow ◽  
Vibration Characteristic ◽  
Technological Parameters ◽  
Forging Process ◽  
Precision Forging ◽  
Blade Forging ◽  
Deformation Defects ◽  
3D Software ◽  
Deform 3D

A blade with a damper platform, with excellent anti-vibration characteristic and high efficiency, has become one of the most important types of blades being developed in the aeronautical engines. During the precision forging process of this blade, the friction between dies and workpiece has important effects on metal flow, deformation defects, load and energy etc. So researching the effects of friction conditions on the forging process of blade with a damper platform has been a crucial problem urgent to be resolved. In this paper, the precision forging process of titanium alloy blade with a damper platform under different friction conditions has been simulated and analyzed based on the DEFORM-3D software platform. The obtained results reveal the influence laws of friction on temperature field and load-stroke curves, and provide a significant basis for determining technological parameters of the blade forging process.

Graded Transitions Homogeneity for Ti-50.8%Ni Processed by ECAP

2014 ◽  
Vol 1082 ◽  
pp. 90-94
Author(s):  
Mohamed Osman ◽  
Dian Tao Zhang ◽  
Yun Xiang Tong ◽  
Yu Feng Zheng ◽  
Li Li
Keyword(s):  
Standard Deviation ◽  
Shape Memory Alloy ◽  
Vickers Microhardness ◽  
Angular Pressing ◽  
Simulation Results ◽  
3D Software ◽  
Deformation Homogeneity ◽  
Deform 3D ◽  
Inhomogeneity Index ◽  
Good Agreement

Ti-50.8%Ni shape memory alloy was subjected to four passes equal channel angular pressing (ECAP) with angle 120◦ via route Bc at 450°C. The deformation homogeneity was analyzed on planes across the thickness of the deformed sample by Deform-3D software. Two methods were used from the simulation model to quantify deformation homogeneity , including strain standard deviation (SSD) and inhomogeneity index (Ci). In addition, The deformation heterogeneity of ECAP was analyzed experimentally from microhardness inhomogeneity index ( HII) based on Vickers microhardness test results.In the present work, Ci and SSD had been testified to detect which one could give better results experimentally. It was demonstrated that the simulation results of SSD measurements were in good agreement with experimental results .

The Study of Forward Slip Model in Round-Oval-Round Bar Rolling

2012 ◽  
Vol 192 ◽  
pp. 8-13 ◽  
Author(s):  
Jia Lin Zhou ◽  
Cheng Gang Pan ◽  
Bing Lv ◽  
Hui Wang
Keyword(s):  
Regression Model ◽  
Rolling Process ◽  
Rolling Speed ◽  
Slip Model ◽  
Rolling Schedule ◽  
Continuous Rolling ◽  
Forward Slip ◽  
Bar Rolling ◽  
Round Bar ◽  
Proper Design

In order to predict the forward slip value correctly, this article established regression model of forward slip in oval-round and round-oval pass rolling, predicted the forward slip values in ach pass in Ф12 and Ф16 round bar rolling for a factory, measured forward slip of lead rods in experimental mill using geometrical modeling method. The results showed that the model of forward slip has great practical value for proper design rolling speed, rolling schedule, thereby ensuring the continuous rolling process carried out smoothly

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