Improvement of the wear resistance of hot forging dies using a locally selective deposition technology with transition layers

Ahn, Dong‐Gyu; Lee, Ho-Jin; Cho, Jong-Rae; Guk, Dae-Seon

doi:10.1016/j.cirp.2016.04.013

Cited by 29 publications

(14 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Bennett et al [116] revealed that the service life of dies repaired by the LAM-DED process is longer than that by a traditional repair process by factors of 3.4-8.0 times. Research on the 3R of molding, forming and die casting tools started from only the repair of tools with different types of defects, while those extended to remanufacturing of tools with improved functionality and performance [4,32,35,76,77,79,80,106,107,[116][117][118][119][120]. Ahn et al remanufactured several hot forging dies with the wear resistance using a selective deposition technology based on the LAM-DED process [4,119].…”

Section: Repair Restoration and Remanufacturingmentioning

confidence: 99%

“…Research on the 3R of molding, forming and die casting tools started from only the repair of tools with different types of defects, while those extended to remanufacturing of tools with improved functionality and performance [4,32,35,76,77,79,80,106,107,[116][117][118][119][120]. Ahn et al remanufactured several hot forging dies with the wear resistance using a selective deposition technology based on the LAM-DED process [4,119]. They demonstrated that the wear resistance and the service life can be greatly improved when remanufacturing technology based on the LAM-DED process is applied to the hot forging die, as shown in Fig.…”

Section: Repair Restoration and Remanufacturingmentioning

confidence: 99%

“…They demonstrated that the wear resistance and the service life can be greatly improved when remanufacturing technology based on the LAM-DED process is applied to the hot forging die, as shown in Fig. 8a [119]. Hong et al [120] remanufactured trimming dies with 23F858 tool steel deposited on S45C structural steel using a DMT process owing to the improved service life of the dies.…”

Section: Repair Restoration and Remanufacturingmentioning

confidence: 99%

“…The DJM can cause cracking in the interface between different materials owing to the difference of lattice structures, thermal expansion coefficient and mechanical properties [4,51,119,129,132,135]. The GPM and the ISM were used to overcome the cracking in the interface during the creation of FGM&S [4,51,119,129,130]. The GPM creates compositionally graded interlayers between different materials, as shown in Fig.…”

Section: Tailored Materials and Structuresmentioning

confidence: 99%

See 3 more Smart Citations

Directed Energy Deposition (DED) Process: State of the Art

Ahn

2021

Int. J. of Precis. Eng. and Manuf.-Green Tech.

Self Cite

318

View full text Add to dashboard Cite

Metal additive manufacturing technologies, such as powder bed fusion process, directed energy deposition (DED) process, sheet lamination process, etc., are one of promising flexible manufacturing technologies due to direct fabrication characteristics of a metallic freeform with a three-dimensional shape from computer aided design data. DED processes can create an arbitrary shape on even and uneven substrates through line-by-line deposition of a metallic material. Theses DED processes can easily fabricate a heterogeneous material with desired properties and characteristics via successive and simultaneous depositions of different materials. In addition, a hybrid process combining DED with different manufacturing processes can be conveniently developed. Hence, researches on the DED processes have been steadily increased in recent years. This paper reviewed recent research trends of DED processes and their applications. Principles, key technologies and the state-of-the art related to the development of process and system, the optimization of deposition conditions and the application of DED process were discussed. Finally, future research issues and opportunities of the DED process were identified.

show abstract

Section: Repair Restoration and Remanufacturingmentioning

confidence: 99%

Section: Repair Restoration and Remanufacturingmentioning

confidence: 99%

Section: Repair Restoration and Remanufacturingmentioning

confidence: 99%

Section: Tailored Materials and Structuresmentioning

confidence: 99%

See 2 more Smart Citations

Directed Energy Deposition (DED) Process: State of the Art

Ahn

2021

Int. J. of Precis. Eng. and Manuf.-Green Tech.

Self Cite

318

View full text Add to dashboard Cite

show abstract

“…Recent research on the wear resistance of tooling alloys has focused on different alternatives to improve the wear behavior of these materials. Ahn et al [90] developed a technology to improve the wear resistance of hot forging dies by the deposition of Stellite material through DED technology. Hot forging experiments were conducted to compare the wear resistance and quality of the products obtained with a designed die and a conventional die.…”

Section: High Wear Resistancementioning

confidence: 99%

Porosity, cracks, and mechanical properties of additively manufactured tooling alloys: a review

et al. 2021

View full text Add to dashboard Cite

Additive manufacturing (AM) technologies are currently employed for the manufacturing of completely functional parts and have gained the attention of high-technology industries such as the aerospace, automotive, and biomedical fields. This is mainly due to their advantages in terms of low material waste and high productivity, particularly owing to the flexibility in the geometries that can be generated. In the tooling industry, specifically the manufacturing of dies and molds, AM technologies enable the generation of complex shapes, internal cooling channels, the repair of damaged dies and molds, and an improved performance of dies and molds employing multiple AM materials. In the present paper, a review of AM processes and materials applied in the tooling industry for the generation of dies and molds is addressed. AM technologies used for tooling applications and the characteristics of the materials employed in this industry are first presented. In addition, the most relevant state-of-the-art approaches are analyzed with respect to the process parameters and microstructural and mechanical properties in the processing of high-performance tooling materials used in AM processes. Concretely, studies on the AM of ferrous (maraging steels and H13 steel alloy) and non-ferrous (stellite alloys and WC alloys) tooling alloys are also analyzed.

show abstract