Study of the Effect of Thermal Cutting on the Microstructure and Chemical Composition of the Edges of Workpieces Made of Steel Brands S345, S390

Tingaev, A.K.; Gubaydulin, R.G.; Ilin, I.A.

doi:10.1016/j.proeng.2016.07.171

Cited by 7 publications

(9 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It lowers as it moves away from the cut surface. Similar hardness profiles were obtained when cutting S345, S390, S700MC, S690QL steels [ 22 , 23 ].…”

Section: Resultssupporting

confidence: 65%

“…Edge carburization is possible only when a liquid FeO film is formed and carbon combustion is inhibited. The presented processes cause an intensive change in the concentration of components from the cutting surface to the base material in the area of the melted layer [ 15 , 16 , 17 , 18 , 23 , 24 , 25 ]. The present research showed that the surface layer of the cut surface is depleted of silicon and manganese in relation to the average content of these elements in steel.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Influence of the Thermal Cutting Process on Cracking of Pearlitic Steels

2021

View full text Add to dashboard Cite

The paper presents research results of the influence of heat input into high carbon rail steel during cutting processes on microstructure transformation and cracking. The massive block of steel prepared for rail rolling processes was cut and examined by nondestructive magnetic testing and destructive testing by microscopic examination and hardness measurements. The results show unfavorable microstructure changes where pearlite and transformed ledeburite were obtained. The effects of the presence of such microstructures are high hardness near to cutting surfaces (above 800 HV) and microcracks which grow into low hardness block cores during rolling and rail shaping.

show abstract

“…It lowers as it moves away from the cut surface. Similar hardness profiles were obtained when cutting S345, S390, S700MC, S690QL steels [ 22 , 23 ].…”

Section: Resultssupporting

confidence: 65%

Section: Resultsmentioning

confidence: 99%

Influence of the Thermal Cutting Process on Cracking of Pearlitic Steels

2021

View full text Add to dashboard Cite

show abstract

“…For example, after application of oxyfuel, laser, and plasma cutting, in the samples of S460 M steel, an increase in the superficial hardness followed by a decreasing in the mechanical properties was reported (Andrés et al 2016). Also, for S345 and S390 steels treated by oxyfuel and plasma, cutting was found with similar results after being subjected to thermal cutting (Tingaev et al 2016). …”

Section: Resultsmentioning

confidence: 81%

“…At first, thermal fluctuations so as the addition of carbon concentration may cause effects on the thermally affected zone (HAZ) (Tingaev et al 2016;Andrés et al 2016), which may include residual stresses (Yilbas and Arif 2011;Michaleris 1999;Hu et al 2007;Kyong-Ho and Lee 2007;Ma et al 2016) and subsequently generate fatigue in the material (Goldberg 1978;Ramaswamy 1989;Cicero et al 2017;Liu et al 2016;Zhang et al 2016;ASM 2013;Lara et al 2013) or even spontaneous fracture, starting from micro-crack formation. It is also possible to suppose that solid-solid phase transformations so as micro-structure changes take place into the affected area during the cooling after the process end.…”

Section: Introductionmentioning

confidence: 99%

Effect of torch process on the steels used for bucket, shovel handle, and other high-tonne mining equipment

Medina

Yapur

Fornaro

et al. 2017

Int J Mech Mater Eng

View full text Add to dashboard Cite

Background: The gouging torch process using air carbon arc cutting (CAC) device is a standard maintenance procedure carrying out in high-tonne equipment used in the minery industry. The application of this process could locally affect the mechanical properties and the microstructure in the thermally affect zone (HAZ). The changes involve variation in the local carbon concentration and a tempering effect. In commonly used steels in the manufacture of buckets (SAE 5130) and shovel handles (ASTM 514 grade S), the processes influence negatively the work lifetime and the future maintenance works on the device. Methods: Hardness, metallographic analysis trhough optical (OM) and scanning electron microscopy (SEM) were used to evaluate the affected zone. Results: An increasing carbon content up to 2 wt% C was observed in the affected area of the sample, on the slag adhered to it. Presumably, the rest of carbon is lost by evaporation during the process. Conclusions: The hardness measured on the surface of the cut zone shows an increased value for ASTM A 514 grade S, which does not present a notable change for SAE 5130. However, both steels showed a tempering effect. Microcracks of 20 to 40 μm appear, and in a few opportunities, a larger crack was found, reaching a total length of 1480 μm.

show abstract

“…No que diz respeito as formas, tem-se a possibilidade de distorção da peça ocasionada pelas tensões térmicas geradas pelo calor excessivo, a formação de rugosidade/ondulações e a geração de rebarbas [1,2,3]. Sobre as propriedades mecânicas tem-se a possibilidade de formação de uma zona afetada pelo calor (ZAC) que pode modificar o diâmetro médio dos grãos pelo processo de recristalização e, por consequência, alterar sua resistência mecânica [4,5,6]. Dentre os processos de corte, o corte a plasma em chapas metálicas apresenta relevância para diversas aplicações da indústria.…”

Section: Introductionunclassified

Efeito Do Sopro Magnético Na Qualidade Do Corte a Plasma Automatizado

Mougo¹,

Campos²,

Arydes³

2019

ABM Proceedings

View full text Add to dashboard Cite

Resumo O desenvolvimento de tecnologias para o corte de materiais é avaliado pela qualidade do produto final. Deste modo, diz-se que um processo de corte apresenta bons resultados se este não modifica as formas e dimensões da peça e mantem suas propriedades mecânicas inalteradas. Dentre os processos de corte, o corte a plasma em chapas metálicas apresenta relevância para diversas aplicações da indústria. Sua precisão e qualidade dependem principalmente da boa execução da trajetória de corte e de sua respectiva velocidade. Neste trabalho utiliza-se um mecanismo que realiza o controle automático da ferramenta de corte e verifica-se a ocorrência do sopro magnético através da formação de rebarbas e da dureza para diferentes velocidades e alturas de corte. Os resultados demonstram os parâmetros e ajustes para cortes mais preciso, sem necessidade de acabamento ou tratamento da superfície após o corte.

show abstract

Study of the Effect of Thermal Cutting on the Microstructure and Chemical Composition of the Edges of Workpieces Made of Steel Brands S345, S390

Cited by 7 publications

References 1 publication

Influence of the Thermal Cutting Process on Cracking of Pearlitic Steels

Influence of the Thermal Cutting Process on Cracking of Pearlitic Steels

Effect of torch process on the steels used for bucket, shovel handle, and other high-tonne mining equipment

Efeito Do Sopro Magnético Na Qualidade Do Corte a Plasma Automatizado

Contact Info

Product

Resources

About