FEA Based Tool Life Quantity Estimation of Hot Forging Dies Under Cyclic Thermo-Mechanical Loads

2011 ◽  
Author(s):  
B.-A. Behrens ◽  
A. Bouguecha ◽  
F. Schäfer ◽  
T. Hadifi ◽  
Francisco Chinesta ◽  
...  
Keyword(s):  
Tool Life ◽  
Hot Forging ◽  
Mechanical Loads

Study of the applicability of 22MnB5 sheet metal as protective masks to improve tool life in hot forging process

2020 ◽  
Vol 107 (1-2) ◽  
pp. 39-47
Author(s):  
Luana De Lucca de Costa ◽  
Alberto Moreira Guerreiro Brito ◽  
André Rosiak ◽  
Lirio Schaeffer
Keyword(s):  
Sheet Metal ◽  
Tool Life ◽  
Hot Forging ◽  
Forging Process ◽  
Hot Forging Process

scholarly journals Improvement Of Tools Durability By Application Of Hybrid Layer Of Nitrided/PECVD Coating.

2015 ◽  
Vol 60 (3) ◽  
pp. 1609-1616 ◽  
Author(s):  
Z. Gronostajski ◽  
M. Kaszuba ◽  
H. Paschke ◽  
T. Zakrzewski ◽  
G. Rogaliński
Keyword(s):  
Surface Layer ◽  
Constant Velocity ◽  
Hot Forging ◽  
Hybrid Technique ◽  
Hybrid Layer ◽  
Mechanical Loads ◽  
Main Factors ◽  
Warm Forging ◽  
Thermal Shocks ◽  
Better Than

Abstract In the process of die hot forging the tools are subjected to three main factors leading to their destruction: the intensive thermal shocks, cyclically variable mechanical loads and intensive friction. The above mentioned factors causing destruction in the process of hot forging and warm forging concern mainly the surface of tools. Hybrid technique nitrided/PECVD belong to the latest methods of modifying the properties of the surface layer. In the paper the application of this technique for forging tools of constant velocity joint body is presented. The durability of the new tools is much better than the tools applied so far.

scholarly journals Multi-Layer Wear and Tool Life Calculation for Forging Applications Considering Dynamical Hardness Modeling and Nitrided Layer Degradation

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 104
Author(s):  
Bernd-Arno Behrens ◽  
Kai Brunotte ◽  
Hendrik Wester ◽  
Marcel Rothgänger ◽  
Felix Müller
Keyword(s):  
Tool Life ◽  
Nitrided Layer ◽  
Hot Forging ◽  
Base Material ◽  
Wear Depth ◽  
Extreme Loads ◽  
Wear Protection ◽  
Functional Representation ◽  
Wear Calculation ◽  
Protection Layer

As one of the oldest shaping manufacturing processes, forging and especially hot forging is characterized by extreme loads on the tool. The thermal load in particular is able to cause constant changes in the hardness of the surface layer, which in turn has a decisive influence on the numerical estimation of wear. Thus, also during numerical wear, modeling hardness changes need to be taken into account. Within the scope of this paper, a new implementation of a numerical wear model is presented, which, in addition to dynamic hardness models for the base material, can also take into account the properties of a nitride wear protection layer as a function of the wear depth. After a functional representation, the new model is applied to the wear calculation of a multi-stage industrial hot forging process. The applicability of the new implementation is validated by the evaluation of the occurring hardness, wear depths and the locally associated removal of the wear protection layer. Consecutively, a tool life calculation module based on the calculated wear depth is implemented and demonstrated. In general, a good agreement of the results is achieved, making the model suitable for detailed 2D as well as large 3D Finite Element calculations.

Optimization of Parameters Affecting Tool Wear in Titanium Acetabulum Cup Forging

2006 ◽  
Vol 505-507 ◽  
pp. 679-684
Author(s):  
Rong Shean Lee ◽  
Jin Long Jou
Keyword(s):  
Tool Wear ◽  
Tool Life ◽  
Hot Forging ◽  
Fem Simulation ◽  
Orthopedic Implants ◽  
Parameter Design ◽  
Wear Model ◽  
Working Pressure ◽  
Higher Temperature ◽  
Better Than

Titanium is an attractive material for orthopedic implants, although it is expensive and difficult to manufacture. Hot forging is usually used, but the tool life is always not good since the forging tools sustain higher temperature and the working pressure induces wear. In this research proposes a procedure to obtain forging parameter design optimization considering tool wear using a combination of FEM simulation and Taguchi method. A modified Archard’s wear model is used to predict the tool wear. This procedure is used to evaluate titanium artificial acetabulum cup forging. Based on the minimum tool wear, but maintaining the microstructure required to satisfy the properties needed by orthopedic implants, the titanium acetabulum cup development is successful and the tool life is better than our expectations.

Investigating the Effect of Machining Parameters On Tool Life For Turning of En 08

2012 ◽  
Vol 2 (6) ◽  
pp. 248-249
Author(s):  
Vishal Francis ◽  
◽  
Sumit k Singh Sumit k Singh
Keyword(s):  
Tool Life ◽  
Machining Parameters

Influence of Cementite Particle Size Distribution on Machinability and Tool Life of High Carbon Cr-bearing Steels

1998 ◽  
Vol 84 (5) ◽  
pp. 387-392 ◽  
Author(s):  
Takashi INOUE ◽  
Yuzo HOSOI ◽  
Koe NAKAJIMA ◽  
Hiroyuki TAKENAKA ◽  
Tomonori HANYUDA
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Tool Life ◽  
Cementite Particle ◽  
High Carbon ◽  
Bearing Steels

Analysis and design of thermo-mechanical interfaces

2012 ◽  
Vol 60 (2) ◽  
pp. 205-213
Author(s):  
K. Dems ◽  
Z. Mróz
Keyword(s):  
Optimality Conditions ◽  
Mechanical Loading ◽  
Material Properties ◽  
Structural Response ◽  
External Boundary ◽  
Mechanical Loads ◽  
Internal Interface ◽  
Analysis And Design ◽  
First Order ◽  
Mechanical Nature

Abstract. An elastic structure subjected to thermal and mechanical loading with prescribed external boundary and varying internal interface is considered. The different thermal and mechanical nature of this interface is discussed, since the interface form and its properties affect strongly the structural response. The first-order sensitivities of an arbitrary thermal and mechanical behavioral functional with respect to shape and material properties of the interface are derived using the direct or adjoint approaches. Next the relevant optimality conditions are formulated. Some examples illustrate the applicability of proposed approach to control the structural response due to applied thermal and mechanical loads.

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