Fracture of a Forging Die Caused by Segregation

2019 ◽  
Keyword(s):  
Forging Die

A Multi-Level Low Cycle Fatigue Damage Model for Forging Die Material

2006 ◽  
Vol 514-516 ◽  
pp. 804-809
Author(s):  
S. Gao ◽  
Ewald Werner
Keyword(s):  
Fatigue Life ◽  
Fatigue Damage ◽  
Low Cycle Fatigue ◽  
Damage Model ◽  
Fatigue Loading ◽  
Cycle Fatigue ◽  
Die Material ◽  
Multi Level ◽  
Loading Sequence ◽  
Forging Die

The forging die material, a high strength steel designated W513 is considered in this paper. A fatigue damage model, based on thermodynamics and continuum damage mechanics, is constructed in which both the previous damage and the loading sequence are considered. The unknown material parameters in the model are identified from low cycle fatigue tests. Damage evolution under multi-level fatigue loading is investigated. The results show that the fatigue life is closely related to the loading sequence. The fatigue life of the materials with low fatigue loading first followed by high fatigue loading is longer than that for the reversed loading sequence.

The tempering parameter for evaluating softening of hot and warm forging die steels

2013 ◽  
Vol 213 (8) ◽  
pp. 1364-1369 ◽  
Author(s):  
E. Virtanen ◽  
C.J. Van Tyne ◽  
B.S. Levy ◽  
G. Brada
Keyword(s):  
Die Steels ◽  
Warm Forging ◽  
Forging Die

scholarly journals Material Flow in a Forging Die : Report 1, Geometry of Deformation in the H-Shaped Section

1973 ◽  
Vol 39 (320) ◽  
pp. 1353-1365
Author(s):  
Yasuo KASUGA ◽  
Shigeaki TSUTSUMI ◽  
Hiroyuki SAIKI
Keyword(s):  
Material Flow ◽  
Forging Die ◽  
Shaped Section

Innovations in cold forging die design

2000 ◽  
Vol 98 (2) ◽  
pp. 155-161 ◽  
Author(s):  
Jens Groenbaek ◽  
Torben Birker
Keyword(s):  
Die Design ◽  
Cold Forging ◽  
Forging Die

A Combined Knowledge-Based and Finite Element Approach to Forging Die Design

1991 ◽  
Author(s):  
Imtiaz Haque ◽  
P. D. Dabke ◽  
Chesley Rowe ◽  
John Jackson
Keyword(s):  
Finite Element ◽  
Mesh Generation ◽  
Die Design ◽  
Knowledge Based System ◽  
Knowledge Based ◽  
Element Simulation ◽  
Regeneration Procedure ◽  
Element Approach ◽  
Forging Die ◽  
Simulation Package

Abstract This paper presents the use of a knowledge-based system to provide the link between computer-aided rule-of-thumb procedures and a finite element simulation package for the design of forging dies. The knowledge-based system automates the mesh generation and regeneration procedure that is traditionally the most cumbersome aspect of such a process. The system is programmed in Prolog, C, and Fortran. It is based on parametric mapping approach and generates 2-D quadrilateral meshes. Results are presented to show its effectiveness in reducing the effort and skill required for conducting forging simulations.

Structural changes of radial forging die surface during service under thermo-mechanical fatigue

2009 ◽  
Vol 527 (1-2) ◽  
pp. 98-102 ◽  
Author(s):  
Fardin Nematzadeh ◽  
Mohammad Reza Akbarpour ◽  
Amir Hosein Kokabi ◽  
Seyed Khatiboleslam Sadrnezhaad
Keyword(s):  
Structural Changes ◽  
Radial Forging ◽  
Mechanical Fatigue ◽  
Die Surface ◽  
Forging Die

scholarly journals Filling Path Planning and Polygon Operations for Wire Arc Additive Manufacturing Process

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Jiansheng Zhang ◽  
Qiuyun Wang ◽  
Guiqian Xiao ◽  
Jie Zhou
Keyword(s):  
High Temperature ◽  
Additive Manufacturing ◽  
Path Planning ◽  
Attitude Control ◽  
Hot Forging ◽  
Outer Contour ◽  
Hot Forging Die ◽  
Forging Die ◽  
Wire Arc Additive Manufacturing ◽  
Filling Path

To improve the service life of hot forging die, the additive manufacturing algorithm and additive manufacturing device for die remanufacturing are developed. Firstly, a compound filling algorithm in which the inner zone is filled by linear scanning and the outer contour is filled by offsetting is developed in order to solve the problems encountered in filling path planning for wire arc additive manufacturing (WAAM) like staircase effect at marginal division, degenerated edge at outer contour, programming difficulty, and so forth. Meanwhile, the attitude control algorithm of welding gun is proposed to control the angle between welding gun and welding path so as to improve the welding forming quality. Secondly, the high-temperature and low-temperature wear resistances of Fe-based and Ni-based alloy are tested. The results show that Ni-based alloy has higher high-temperature wear resistance. Finally, a disabled crankshaft hot forging die is selected for application test and the results show that, using the techniques discussed in this paper, welding materials can be saved by more than 50% and machining cost can be saved by more than 60%. In addition, the surface of automatic-repaired die is smooth without oxidation, collapse, and other defects after forging 3000 times, which is much better than that of manual-repaired die.

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