Study on the Influence of Deforming Velocity on Steel Ball Quality Based on DEFORM

2011 ◽  
Vol 117-119 ◽  
pp. 1806-1809 ◽  
Author(s):  
Xiao Zhong Ren ◽  
Yong Qing Liu
Keyword(s):  
Manufacturing Industry ◽  
Rolling Process ◽  
Rolling Ball ◽  
Industry Research ◽  
Resistance To Deformation ◽  
Skew Rolling ◽  
3D Software ◽  
Deforming Velocity ◽  
Rolling Technology ◽  
Deform 3D

The ball defects generated in skew rolling process have restricted to large extent the further application of skew rolling technology in ball manufacturing industry. Research was carried out so as to find the factors and laws of influencing on skew rolling ball quality. It was found by analyzing the forces exerting on the ball that the deforming velocity of ball had the largest influence on the resistance to deformation. Simulations were done respectively under different roller obliquities, different distances between two guide plates, and different rotation speeds of rollers by means of DEFORM-3D software. Finally, the influencing factors and laws on ball quality were discovered.

scholarly journals Deformation Behavior and Experiments on a Light Alloy Seamless Tube via a Tandem Skew Rolling Process

Metals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 59 ◽  
Author(s):  
Feilong Mao ◽  
Fujie Wang ◽  
Yuanhua Shuang ◽  
Jianhua Hu ◽  
Jianxun Chen
Keyword(s):  
Narrow Range ◽  
High Strength ◽  
Rolling Process ◽  
Seamless Tube ◽  
Light Alloy ◽  
Skew Rolling ◽  
3D Software ◽  
Distribution Of Stress ◽  
Deform 3D ◽  
Stable Stage

As a process for producing seamless tubes, the tandem skew rolling (TSR) process was proposed. In order to study deformation characteristics and mechanism on tubes obtained by the TSR process, a numerical simulation of the process was analyzed using Deform-3D software. Simulation results demonstrated the distribution of stress, strain, velocity, and temperature of a seamless tube in the stable stage during the TSR process. Actual experiments of carbon steel 1045, high strength steel 42CrMo, and magnesium alloy AZ31 were carried out in a TSR testing mill. The results demonstrated that the TSR process is qualified for producing tubes of high quality, with an accuracy of ±0.2 mm in wall thickness and ±0.35 mm in diameter. This process is suitable for manufacturing seamless tubes that are difficult to deform or that have been deformed in a narrow range of temperature.

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.

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.

Rolling Process of AZ31 Alloy Bar Using Three Roller Mill

2014 ◽  
Vol 633-634 ◽  
pp. 707-711
Author(s):  
La Feng Guo ◽  
Le Tao Jiang ◽  
Bao Cheng Li ◽  
Zhi Heng Li
Keyword(s):  
Hot Rolling ◽  
Az31 Alloy ◽  
Rolling Process ◽  
Roller Mill ◽  
Pass System ◽  
Hot Rolling Process ◽  
Rolling Method ◽  
3D Software ◽  
Deform 3D ◽  
Round Pass

Structure and pass system of Y-type mill which have three-roller is analyzed. A hot rolling method to produce magnesium alloy bars through flat triangle-arc triangle-round pass system is put forward. Using Deform-3D software, the rolling process of AZ31 alloy bar is simulated to determine the parameters of the rolling process and die. The experiment verifies that the hot rolling process is feasible. The organizational structure is analyzed with metallographic microscope, and the results show that dynamic recrystallization is occurred, the grain size is obviously refined, and the mechanical property of the material is improved in hot rolling process.

scholarly journals Angular Rolling of the Hollow Flanges of Pipe Joints

Metals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 166
Author(s):  
Pavel Kononov ◽  
Sergey Ignatiev ◽  
Dmitry Levashov ◽  
Irina Kononova
Keyword(s):  
Computer Simulation ◽  
Experimental Studies ◽  
Small Scale ◽  
Scale Production ◽  
Rolling Roll ◽  
Pipe Joints ◽  
Hardening Curve ◽  
3D Software ◽  
Rolling Technology ◽  
Deform 3D

The paper considers a three-stage technology for angular rolling of the pipe workpiece. This technology facilitates the expansion of the range of flange parts available by eliminating a number of drawbacks of the known methods of metal forming. In the presented paper, we analyze the results of numerical calculations and experiments, as well as the effective deformation values in blank material, using computer simulation in the DEFORM-3D software package. The results of the computer simulation were reached taking into account experimental studies of the rheological properties of copper alloy L68 in the form of a strain hardening curve using the Instron-8850 complex. The results of the ratio of basic geometric dimensions expanded the range of flange parts under investigation and allowed us to consider angular rolling technology with a variable angle of inclination of the rolling roll from a three-stage perspective, especially in small-scale production.

Study on Hot Rolling Process of Mg-Gd-Y-Nd-Zr Alloy Bar

2014 ◽  
Vol 1004-1005 ◽  
pp. 1289-1294
Author(s):  
La Feng Guo ◽  
Zhi Heng Li ◽  
Pan Yu Chen ◽  
Bao Cheng Li ◽  
Zhi Min Zhang
Keyword(s):  
Hot Rolling ◽  
Equivalent Stress ◽  
Rolling Process ◽  
Pass System ◽  
Hot Rolling Process ◽  
Rolling Method ◽  
3D Software ◽  
Deform 3D ◽  
Round Pass ◽  
Zr Alloy

A hot rolling method to produce Mg-Gd-Y-Nd-Zr alloy bars through oval-vertical elliptical-round pass system is put forward. The mechanical model of Mg-Gd-Y-Nd-Zr alloy has been established. Using Deform-3D software, the rolling process of Mg-Gd-Y-Nd-Zr alloy bar is simulated at rolling temperature 450°C, rolling speed 0.4m/s. And equivalent stress distribution and load variation has been obtained. It provides a theoretical basis for the hot rolling bars of magnesium alloy. The experiment verifies that the hot rolling process is feasible. The organizational structure is analyzed with metallographic microscope, and the results show that dynamic recrystallization is occurred, the grain size is obviously refined, and the mechanical property of the material is improved in hot rolling process.

The Strain Analysis of Plate Cross Wedge Rolling of Spiral Shaft Parts

2014 ◽  
Vol 941-944 ◽  
pp. 1895-1900 ◽  
Author(s):  
Fa Shen ◽  
Wen Jing Yu ◽  
Wen Fei Peng ◽  
Xue Dao Shu ◽  
Chun Jie Yu
Keyword(s):  
Finite Element ◽  
Manufacturing Industry ◽  
Metal Flow ◽  
Strain Analysis ◽  
Element Model ◽  
Rolling Process ◽  
Cross Wedge Rolling ◽  
Rigid Plastic ◽  
Equipment Manufacturing ◽  
Deform 3D

The spiral shaft parts have been widely applied in machinery and equipment manufacturing industry, the paper based on DEFORM-3D, the rigid-plastic finite element model of cross wedge rolled spiral shaft parts was established. The rolling process was simulated, the strain laws were analyzed, and the characteristics of metal flow were explored. From which we can find Plate cross wedge rolled spiral shaft parts is completely feasible. The results provide the theoretic basis for precision deformation of cross wedge rolled spiral shaft parts.

Feasibility Study on Forming Hollow Axle with Multi-Wedge Synchrostep by Cross Wedge Rolling

2012 ◽  
Vol 201-202 ◽  
pp. 673-677 ◽  
Author(s):  
Bao Sou Sun ◽  
Xue Lei Zeng ◽  
Xue Dao Shu ◽  
Wen Fei Peng ◽  
Pei Sun
Keyword(s):  
3D Model ◽  
High Efficiency ◽  
Cross Wedge Rolling ◽  
Hollow Shaft ◽  
Element Simulation ◽  
Near Net Shape ◽  
Net Shape Forming ◽  
3D Software ◽  
Rolling Technology ◽  
Deform 3D

One direction of the cross wedge rolling technology is to realize high-efficiency, precise and near-net-shape forming hollow axle with multi-wedge synchrostep cross wedge rolling. This paper deduced the rotated condition of forming hollow shaft with multi-wedge cross wedge rolling (MCWR) base on forming solid shaft with single-wedge cross wedge rolling, and analyzed technics parameters on the influence of rotated conditions. Through the finite element simulation we got rolling technics parameters on the effect of rolled piece and selecting principle, and then created the 3D model of the equal diameter period of hollow axle with the MCWR. By using DEFORM-3D software, the process of rolling equal diameter period was simulated. The result indicated that it is feasible to roll hollow axle with multi-wedge synchrostep by cross wedge rolling.

scholarly journals The Chosen Aspects of Skew Rolling of Hollow Stepped Shafts

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 764
Author(s):  
Jarosław Bartnicki ◽  
Yingxiang Xia ◽  
Xuedao Shu
Keyword(s):  
Cross Section ◽  
Rolling Mill ◽  
Metal Flow ◽  
Experimental Tests ◽  
Rolling Process ◽  
Numerical Control ◽  
Technological Parameters ◽  
Flow Mechanisms ◽  
The Individual ◽  
Skew Rolling

The paper presents chosen aspects of the skew rolling process of hollow stepped products with the use of a skew rolling mill designed and manufactured at the Lublin University of Technology. This machine is characterized by the numerical control of spacing between the working rolls and the sequence of the gripper axial movement, which allows for the individual programming of the obtained shapes of parts such as stepped axles and shafts. The length of these zones and the values of possibly realizable cross-section reduction and obtained outlines are the subject of this research paper. The chosen results regarding the influence of the technological parameters used on the course of the process are shown in the present study. Numerical modelling using the finite element method in Simufact Forming, as well as the results of experimental tests performed in a skew rolling mill, were applied in the conducted research. The work takes into account the influence of cross-section reduction of the hollow parts and the feed rate per rotation on the metal flow mechanisms in the skew rolling process. The presented results concern the obtained dimensional deviations and changes in the wall thickness determining the proper choice of technological parameters for hollow parts formed by the skew rolling method. Knowledge about the cause of the occurrence of these limitations is very important for the development of this technology and the choice of the process parameters.

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