High temperature abrasion resistance of differently welded structural steels

Rojacz, H.; Pahr, Hannes; Baumgartner, Susanne; Varga, M.

doi:10.1016/j.triboint.2017.01.039

Cited by 22 publications

(5 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…High temperatures increase the wear rate, one of the factors of this phenomenon is phase transformations in steel, which leads to a decrease in wear resistance [8,18]. These processes are exacerbated by a multiple heating-cooling cycle.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

High temperature wear assessment of mining machines operating tools

Gromyka

Kremcheev

2020

E3S Web Conf.

View full text Add to dashboard Cite

Mining is widely associated with the use of a variety of mining machines for various duties, such as extraction, loading and transportation of rock. Due to prolonged use of machines, the amount of wear of operating tools and machine parts increases. This problem is especially acute for mining and loading machines used in excavation and reclamation, because the wear rate is increased on those duties. The development of wear process and evaluation of the residual life of operating tools of mining and loading machines is well studied in world practice. However, given the variety of climatic, geological and mining conditions, unique for each mineral deposit, we are facing difficulties in creating a comprehensive model of wear process development. In modern researches on this area such issues as estimation of operating tools residual life during intense wear under extreme conditions of high temperatures and sharp temperature drop are understudied. These conditions are typical for deposits of such minerals as coal and peat, which are especially prone to spontaneous combustion. This review discusses methods for assessing various wear mechanisms and the effect of temperature on the intensity of those processes, as well as methods to determine the residual life of operating tools of mining and loading machines working in high-temperature environment.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Although the mechanism of abrasive wear is not temperature depending, an increase in temperature leads to a decrease in hardness of most types of steel, thereby reducing the amount of applied load necessary for the appearance of defects [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

High temperature wear assessment of mining machines operating tools

Gromyka

Kremcheev

2020

E3S Web Conf.

View full text Add to dashboard Cite

show abstract

“…ROJACZ et al [9] analisaram o efeito da microestrutura obtidas pelo processo de soldagem GMAW em diferentes aços estruturais quanto às suas resistências à abrasão em altas temperaturas. Os resultados indicaram uma forte dependência da dureza e da microestrutura, originadas de diferentes parâmetros de soldagem, na resistência ao desgaste.…”

Section: Introductionunclassified

Efeito do metal de adição na resistência ao desgaste por deslizamento de um aço estrutural soldado por GMAW

Giarollo

Mazzaferro

2019

Matéria (Rio J.)

View full text Add to dashboard Cite

RESUMO O objetivo do presente trabalho foi avaliar o efeito do metal de adição na soldagem, e das microestruturas resultantes, na resistência ao desgaste de juntas soldadas de um aço estrutural ASTM A242, que possui resistência à corrosão atmosférica e é utilizado na fabricação de vagões destinados ao transporte de minério. As amostras foram soldadas através do processo GMAW (Gas Metal Arc Welding), utilizando dois metais de adição que apresentam resistências mecânicas diferentes, AWS ER70S-6 e AWS ER80S-G. A resistência ao desgaste das amostras foi avaliada através de ensaios de microdesgaste por deslizamento linear recíproco, a seco e em uma solução contendo 0,05M NaCl, em três regiões da junta soldada: metal base (MB), metal de solda (MS) e zona afetada pelo calor de grãos grosseiros (ZAC-GG). Após a soldagem, foi observado um aumento nos valores médios de durezas do MS e da ZAC em relação à dureza inicial do metal base. Os resultados dos ensaios de microdesgaste mostraram que o MB apresentou a menor resistência ao desgaste, possivelmente devido à sua microestrutura, que facilitou o desgaste por deformação plástica. A ZAC-GG apresentou a maior resistência ao desgaste entre as três regiões analisadas. Comparando os ensaios realizados nas condições a seco e em solução foi observada uma redução nos valores de coeficiente de atrito quando adicionada uma solução ao sistema, e uma perda de volume das trilhas mais acentuada. Observou-se que a utilização do metal de adição de menor resistência mecânica produziu juntas soldadas com resistência ao desgaste comparável às juntas obtidas com o arame de maior resistência.

show abstract

“…Another replacement of the rubber wheel with a steel one is shown in [20][21][22][23] for ceramic materials utilized in high ambient temperature and strongly exposed abrasive wear like plants in steel industry. In this work the same boundary conditions are applied on FWTs by variation of a steel and rubber wheel.…”

Section: Introductionmentioning

confidence: 99%

Effect of Tungsten Carbides on Abrasive Wear of Hardfacing Coatings

Pichler

Leitner

Grün

et al. 2018

Advances in Tribology

View full text Add to dashboard Cite

The aim of this study is to investigate the abrasive wear loss as well as the wear mechanisms of hardfacing layers with and without tungsten carbides (WC) included in the matrix in different friction wheel test (FWT) configurations. The FWT setup is varied in regard to the materials of the rotating wheels, whereat steel and rubber materials are utilized to achieve varying wear mechanisms as representative conditions for stone milling as well as low density wood cutting processes. Coatings including fine particles of WC highlight the highest resistance against abrasive wear in rubber wheel testing condition, at which microcutting acts as the dominant effect. In comparison to the hardfacings without WC, the mean material loss majorly decreases by about 75%. On the contrary, the mean material loss of fine WC reinforced coatings increases up to 93% compared to the condition without WC if a steel wheel is utilized as rotating counterpart. Thereby, the coatings with comparably coarse WC reveal the minimum material loss with a decrease over 70% compared to the condition without WC. In conclusion, the inclusion of WC in hardfacing coatings significantly increases the wear resistance. The experimental wear test results highlight the fact that in order to achieve the optimal wear resistance the material characteristics of the hardfacings need to be properly defined considering the predominant wear mechanisms under inservice conditions.

show abstract

High temperature abrasion resistance of differently welded structural steels

Cited by 22 publications

References 23 publications

High temperature wear assessment of mining machines operating tools

High temperature wear assessment of mining machines operating tools

Efeito do metal de adição na resistência ao desgaste por deslizamento de um aço estrutural soldado por GMAW

Effect of Tungsten Carbides on Abrasive Wear of Hardfacing Coatings

Contact Info

Product

Resources

About