Three dimensional thermo-mechanical simulation of the tube forming process in Diescher's mill

Pater, Z.; Kazanecki, J.; Bartnicki, J.

doi:10.1016/j.jmatprotec.2006.03.205

Cited by 45 publications

(28 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the numerical models developed by the mentioned authors were based on significant simplifications -for instance, thermal phenomena occurring in the material were omitted, the calculations were limited only to the initial or steady state of the piercing process, or they assumed that the material being formed is ideally plastic. More developed models of the piercing process which took the thermal phenomena into consideration were presented by Pater et al [6] and Lu et al [7]. The calculation results obtained by means of such models agree with the experimental test results.…”

Section: Introductionsupporting

confidence: 57%

Complex Numerical Analysis of the Tube Forming Process Using Diescher Mill

Pater¹,

Kazanecki²

2013

Archives of Metallurgy and Materials

Self Cite

View full text Add to dashboard Cite

This paper presents the results of FEM simulations of the rotary piercing process in which disc guiding devices of the Diescher type are used. During this process the material is formed by means of two skew rolls, two guiding devices, and the piercing plug mounted on the mandrel. The aim of the analysis was to determine the effect of the plug diameter, the plug advance, the feed angle and the diameter reduction on the piercing process. Nine cases of piercing with three different plugs used were analyzed. The effects of the basic process parameters on the tube shell diameter and the tool load were analyzed. The numerical results obtained using Simufact.Forming 10.0 were verified under experimental conditions in which the tube shell made from 100Cr6 bearing steel was pierced. The results of the FEM calculations show agreement with the experimental results.Keywords: tube piercing, Diescher mill, FEM analysis, experiment W artykule zaprezentowano wyniki symulacji numerycznych procesu dziurowania tulei w walcarce skośnej z prowadnicami tarczowymi Dieschera. W procesie tym materiał jest kształtowany w wyniku oddziaływania dwóch ustawionych skośnie walców, dwóch prowadnic oraz główki dziurującej montowanej na trzpieniu. Celem analizy było określenie wpływu średnicy główki, wysunięcia główki, kąta zukosowania walców oraz gniotu na przebieg procesu dziurowania. Przeanalizowano dziewięć przypadków kształtowania, w których wykorzystano trzy rożne główki dziurujące. Określono wpływ podstawowych parametrów procesu na średnicę tulei kształtowanej oraz obciążenie poszczególnych narzędzi. Wyniki symulacji numerycznej otrzymanej w programie Simufact.Forming 10 zweryfikowano w warunkach doświadczalnych, w których dziurowano tuleje ze stali łożyskowej w gatunku 100Cr6. Rezultaty obliczeń MES pozostawały w dobrej zgodności z wynikami uzyskanymi z doświadczeń.

show abstract

Section: Introductionsupporting

confidence: 57%

Complex Numerical Analysis of the Tube Forming Process Using Diescher Mill

Pater¹,

Kazanecki²

2013

Archives of Metallurgy and Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…The finite element method is used for simulation of different plastic workings: rolling, forging and pressing, drawing and other [6][7][8][9][10][11][12]. Numerical analysis based on the elastic and elastic/ visco-plastic bodies is used for theoretical analysis of a contact surface of the spherical tool and the workpiece [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

The Numerical and Experimental Analysis of Ballizing Process of Steel Tubes

Dyl

2017

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

This paper presents chosen results of experimental and numerical research of ballizing process of the steel tubes. Ballizing process is a method of burnishing technology of an internal diameter by precisely forcing a ball through a slightly undersized premachined tubes. Ballizing process is a fast, low-cost process for sizing and finishing tubes. It consists of pressing a slightly oversized ball through an unfinished tube to quickly bring the hole to desired size. The ball is typically made from a very hard material such as tungsten carbide or bearing steel. Ballizing process is by cold surface plastic forming of the surface structure, thereby leaving a layer of harder material and reducing its roughness. After theoretical and experimental analysis it was determined that the smaller the diameter of the balls, the bigger intensity of stress and strain and strain rate. The paper presents influence of ballizing process on the strain and stress state and on the surface roughness reduction rate of the steel tubes.

show abstract

“…The barrel-type rotary piercing is used widely in the world. Among the barrel-type rotary piercing, the best productivity and high quality of thick-walled tubes are obtained when two rolls rolling mills are used with two guiding discs of Diescher type [1] . The Diescher tube piercing is very complex process of the material flow.…”

Section: Introductionmentioning

confidence: 99%

Shear stresses and velocity analysis of piercing process in Diescher's mill using Finite Element Method

Lu¹,

Jia²

2017

Proceedings of the 2016 International Forum on Mechanical, Control and Automation (IFMCA 2016)

View full text Add to dashboard Cite

Abstract. The finite element method (FEM) was used for simulation of piercing process of the tube in Diescher's mill. After a short description of the problem, the numerical model of the process was described. The simulated results visualize dynamic evolution of shear stresses and velocity in the piercing process. It shows that the distributions of shear stresses on the internal and external surface of the work-piece are mainly on the contact areas between the rolls and metal. The movement of mass points is not along circle direction but transverse. The reasons are analyzed. In conclusion, the position of plug should be located in the loose area and the discs should been arranged in a suitable position according to the ovalization of the workpiece forming.

show abstract

Three dimensional thermo-mechanical simulation of the tube forming process in Diescher's mill

Cited by 45 publications

References 2 publications

Complex Numerical Analysis of the Tube Forming Process Using Diescher Mill

Complex Numerical Analysis of the Tube Forming Process Using Diescher Mill

The Numerical and Experimental Analysis of Ballizing Process of Steel Tubes

Shear stresses and velocity analysis of piercing process in Diescher's mill using Finite Element Method

Contact Info

Product

Resources

About