Effect of symmetrical and asymmetrical forging processes on the quality of forged products

Dyja, H.; Banaszek, G.; Berski, S.; Mróz, S.

doi:10.1016/j.jmatprotec.2004.07.109

Cited by 14 publications

(11 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…There are known works, which describe the influence of specially shaped tools on the strain-stress state of the billet during open die forging [14][15][16][17][18]. These works are focused on forging by rounded and trapezoidal tools.…”

Section: Introductionmentioning

confidence: 99%

New schemes of forging plates, shafts, and discs

Zhbankov

Perig

Aliievа

2015

Int J Adv Manuf Technol

View full text Add to dashboard Cite

This paper presents the various ways of forging large forged pieces such as shafts, plates, and discs. A finite element method was used to simulate open die forging processes such as forging by flat dies with a slant, forging by staged dies, and upsetting of profiled workpiece. The parameters of the stress strain state of the billet in these processes were determined, along with the rational parameters for forging plates by flat dies with slant such as tool size and mechanical modes. The optimal die step dimension and mechanical regime for forging shafts by staged tools was determined. Also, the rational geometric parameters of the workpiece for forging discs by upsetting were determined. For these forging schemes, a simulation was done of the microstructure evolution in forgings obtained by traditional technology and new proposed technology. The paper shows the advantages of new forging schemes which provide a uniform distribution of grain size in the obtained billets.

show abstract

Section: Introductionmentioning

confidence: 99%

New schemes of forging plates, shafts, and discs

Zhbankov

Perig

Aliievа

2015

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…Tamura et al (2005) further extended their studies of open die forging to determine a die shape that would minimize overlap defects during multiple pass side pressing of an octagonal workpiece into a circular cross-sectioned shape. Dyja et al (2004) used three-dimensional FEM to investigate the effect of some complex die shapes on the deformation patterns in open die forging. They validated their calculations with laboratory scale experiments using steel as the workpiece.…”

Section: Introductionmentioning

confidence: 99%

Internal void closure during the forging of large cast ingots using a simulation approach

Lee

Tyne

et al. 2011

Journal of Materials Processing Technology

106

View full text Add to dashboard Cite

“…Large steel products produced by complex open-die forging processes are widely used in industries with high quality demands on structural and mechanical properties. One of the key fields is undoubtedly power engineering, especially renewable sources, where heavy and long forgings are used, for example, for rotor shafts of wind turbines [10][11][12][13][14]. The input semifinished product for the production of these shafts is heavy steel ingots, in which there may be problems with achieving the required internal quality due to the occurrence of a very inhomogeneous and coarse-grained structure [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Rare Earth Metals Alloying on the Internal Quality of Industrially Produced Heavy Steel Forgings

Jonšta

Brožová

et al. 2021

Materials

View full text Add to dashboard Cite

The paper presented the findings obtained by industrial research and experimental development on the use of rare earth metals (REMs) in the production of heavy steel ingots and their impact on the internal quality of the 42CrMo4 grade steel forging. REMs alloying was carried out after vacuuming the steel. A relatively large melting loss of cerium (about 50%) and its further decrease in casting due to reoxidation were observed. Refinement of structure and better mechanical properties of forged bar containing about 0.02 wt.% of Ce compared to that of the standard production were not achieved. The wind power shaft with content of about 0.06 wt.% of Ce showed high amount of REM inclusions, which were locally chained, and in some cases, initiated cracks. Four stoichiometrically different types of REM inclusions were detected in forgings, namely (La-Ce)2O2S + (La-Ce)O2 + SiO2 (minority); oxygen, phosphorus, arsenic, and antimony bound to lanthanum and cerium probably bonded with iron oxides La + Ce, MgO, Al2O3 a SiO2; (La-Ce)2O2S, FeO, SiO2, and CaO or CaS.

show abstract

Effect of symmetrical and asymmetrical forging processes on the quality of forged products

Cited by 14 publications

References 6 publications

New schemes of forging plates, shafts, and discs

New schemes of forging plates, shafts, and discs

Internal void closure during the forging of large cast ingots using a simulation approach

The Effect of Rare Earth Metals Alloying on the Internal Quality of Industrially Produced Heavy Steel Forgings

Contact Info

Product

Resources

About