Effect of Sandblasting on Static and Fatigue Strength of Flash Butt Welded 75Cr4 Bandsaw Blades

The aim of the research presented in this article is analysis of the effect of the surface treatment method on the static and fatigue strength of flash butt welded bandsaw blades. A 1-mm-thick 75Cr1 cold-work tool steel sheet used for bandsaw blades was used as the test material. Fractographic studi...

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Autores principales:	Andrzej Kubit, Łukasz Lenart, Tomasz Trzepieciński, Andrzej Krzysiak, Wojciech Łabuński
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	flash welding sandblasting static strength surface engineering tool steel Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/8a12ab388a5b4f18bde0f2e9cff6ee54
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spelling	oai:doaj.org-article:8a12ab388a5b4f18bde0f2e9cff6ee542021-11-25T18:13:57ZEffect of Sandblasting on Static and Fatigue Strength of Flash Butt Welded 75Cr4 Bandsaw Blades10.3390/ma142268311996-1944https://doaj.org/article/8a12ab388a5b4f18bde0f2e9cff6ee542021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6831https://doaj.org/toc/1996-1944The aim of the research presented in this article is analysis of the effect of the surface treatment method on the static and fatigue strength of flash butt welded bandsaw blades. A 1-mm-thick 75Cr1 cold-work tool steel sheet used for bandsaw blades was used as the test material. Fractographic studies of the fatigue fractures and fractures formed in static tests were also carried out. The static strength tests showed sandblasting the weld surface had no significant effect on the load capacity of the joint. However, the sandblasted specimens showed a higher repeatability of the load capacity (lower standard deviation). In the case of both analyzed sample variants of specimens, sandblasted and non-sandblasted, the number of cycles at which the sample was damaged decreases with the percentage increase of the stress amplitude. When loading the samples with a stress amplitude value in the range between 400 and 690 MPa, sandblasting of the weld surface increased the average value of destructive cycles by about 10–86% (depending on the stress amplitude) compared to non-sandblasted joints. The sandblasting process introduces compressive stresses in the surface layer of the welds, therefore the variable tensile load acting on the sample requires a greater number of cycles before the fatigue cracks initiate and propagate. In the case of all specimens, a ductile fracture was observed. It was also found that, regardless of the variable stress amplitude, sandblasting has a positive effect on reducing the standard deviation of fatigue test results.Andrzej KubitŁukasz LenartTomasz TrzepiecińskiAndrzej KrzysiakWojciech ŁabuńskiMDPI AGarticleflash weldingsandblastingstatic strengthsurface engineeringtool steelTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6831, p 6831 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	flash welding sandblasting static strength surface engineering tool steel Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	flash welding sandblasting static strength surface engineering tool steel Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Andrzej Kubit Łukasz Lenart Tomasz Trzepieciński Andrzej Krzysiak Wojciech Łabuński Effect of Sandblasting on Static and Fatigue Strength of Flash Butt Welded 75Cr4 Bandsaw Blades
description	The aim of the research presented in this article is analysis of the effect of the surface treatment method on the static and fatigue strength of flash butt welded bandsaw blades. A 1-mm-thick 75Cr1 cold-work tool steel sheet used for bandsaw blades was used as the test material. Fractographic studies of the fatigue fractures and fractures formed in static tests were also carried out. The static strength tests showed sandblasting the weld surface had no significant effect on the load capacity of the joint. However, the sandblasted specimens showed a higher repeatability of the load capacity (lower standard deviation). In the case of both analyzed sample variants of specimens, sandblasted and non-sandblasted, the number of cycles at which the sample was damaged decreases with the percentage increase of the stress amplitude. When loading the samples with a stress amplitude value in the range between 400 and 690 MPa, sandblasting of the weld surface increased the average value of destructive cycles by about 10–86% (depending on the stress amplitude) compared to non-sandblasted joints. The sandblasting process introduces compressive stresses in the surface layer of the welds, therefore the variable tensile load acting on the sample requires a greater number of cycles before the fatigue cracks initiate and propagate. In the case of all specimens, a ductile fracture was observed. It was also found that, regardless of the variable stress amplitude, sandblasting has a positive effect on reducing the standard deviation of fatigue test results.
format	article
author	Andrzej Kubit Łukasz Lenart Tomasz Trzepieciński Andrzej Krzysiak Wojciech Łabuński
author_facet	Andrzej Kubit Łukasz Lenart Tomasz Trzepieciński Andrzej Krzysiak Wojciech Łabuński
author_sort	Andrzej Kubit
title	Effect of Sandblasting on Static and Fatigue Strength of Flash Butt Welded 75Cr4 Bandsaw Blades
title_short	Effect of Sandblasting on Static and Fatigue Strength of Flash Butt Welded 75Cr4 Bandsaw Blades
title_full	Effect of Sandblasting on Static and Fatigue Strength of Flash Butt Welded 75Cr4 Bandsaw Blades
title_fullStr	Effect of Sandblasting on Static and Fatigue Strength of Flash Butt Welded 75Cr4 Bandsaw Blades
title_full_unstemmed	Effect of Sandblasting on Static and Fatigue Strength of Flash Butt Welded 75Cr4 Bandsaw Blades
title_sort	effect of sandblasting on static and fatigue strength of flash butt welded 75cr4 bandsaw blades
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/8a12ab388a5b4f18bde0f2e9cff6ee54
work_keys_str_mv	AT andrzejkubit effectofsandblastingonstaticandfatiguestrengthofflashbuttwelded75cr4bandsawblades AT łukaszlenart effectofsandblastingonstaticandfatiguestrengthofflashbuttwelded75cr4bandsawblades AT tomasztrzepiecinski effectofsandblastingonstaticandfatiguestrengthofflashbuttwelded75cr4bandsawblades AT andrzejkrzysiak effectofsandblastingonstaticandfatiguestrengthofflashbuttwelded75cr4bandsawblades AT wojciechłabunski effectofsandblastingonstaticandfatiguestrengthofflashbuttwelded75cr4bandsawblades
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Effect of Sandblasting on Static and Fatigue Strength of Flash Butt Welded 75Cr4 Bandsaw Blades

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