Details
| Original language | English |
|---|---|
| Title of host publication | Bearing and Transmission Steels Technology |
| Subtitle of host publication | ASTM Selected Technical Papers |
| Editors | John Beswick |
| Publisher | ASTM International |
| Pages | 201-226 |
| Number of pages | 26 |
| ISBN (electronic) | 9780803177451 |
| Publication status | Published - 2024 |
| Event | 1st ASTM Bearing and Transmission Steels Technology Symposium - New Orleans, United States Duration: 2 Nov 2022 → 4 Nov 2022 |
Publication series
| Name | ASTM Special Technical Publication |
|---|---|
| Volume | STP 1649 |
| ISSN (Print) | 0066-0558 |
Abstract
Large-diameter slewing bearings are capable of supporting high loads and moments. They are typically used in applications where there is a need for rotational movements, such as in cranes, excavators, and wind turbines. With plasma-transferred arc (PTA) welding it is possible to apply high-performance materials in localized, stressed component regions. The process chain to produce these multimaterial components is called tailored forming because the welding procedure is followed by a subsequent hot forging process. One choice of material for the higher loaded areas is the commercially used bearing steel AISI 52100, which is characterized by high hardness, good wear, and fatigue resistance. However, AISI 52100 has limited corrosion resistance. As an alternative, this paper presents a modified powder alloy made from a high-alloyed martensitic steel with contents of vanadium and carbon and a high-alloyed ferritic-martensitic steel with a high chromium content. It provides the requested corrosion resistance, as well as high wear and fatigue resistance. At first, cylindrical roller thrust bearing washers type 81212 were produced with the new alloy, which was cladded onto AISI 1015. In further process steps, the welded semifinished component was finished to an axial bearing washer and finally examined in an FE-8 life cycle test regarding its fatigue behavior. After successful testing in the FE-8 test rig, a scale-up to larger components was applied. For this purpose, inner rings of the type NU256, consisting of AISI 1015, were cladded by PTA with the new alloy and examined in terms of material properties. The cladded rings were characterized by means of scanning acoustic microscopy, metallography, spark spectrometry, hardness measurements, and corrosion testing. Our studies proved that the new developed powder alloy has achieved the necessary requirements in terms of bearing fatigue strength, weld-ability, hardness, and corrosion resistance.
Keywords
- bearing fatigue life, multimaterial bearings, plasma-transferred arc welding, powder alloy, slewing bearing, tailored forming, tribology
ASJC Scopus subject areas
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
Bearing and Transmission Steels Technology: ASTM Selected Technical Papers. ed. / John Beswick. ASTM International, 2024. p. 201-226 (ASTM Special Technical Publication; Vol. STP 1649).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Manufacturing and Evaluation of Multimaterial Cylindrical Rolling Bearings by Plasma-Transferred Arc Welding
AU - Faqiri, Yusuf
AU - Saure, Felix
AU - Coors, Timm
AU - Pape, Florian
AU - Hassel, Thomas
AU - Poll, Gerhard
PY - 2024
Y1 - 2024
N2 - Large-diameter slewing bearings are capable of supporting high loads and moments. They are typically used in applications where there is a need for rotational movements, such as in cranes, excavators, and wind turbines. With plasma-transferred arc (PTA) welding it is possible to apply high-performance materials in localized, stressed component regions. The process chain to produce these multimaterial components is called tailored forming because the welding procedure is followed by a subsequent hot forging process. One choice of material for the higher loaded areas is the commercially used bearing steel AISI 52100, which is characterized by high hardness, good wear, and fatigue resistance. However, AISI 52100 has limited corrosion resistance. As an alternative, this paper presents a modified powder alloy made from a high-alloyed martensitic steel with contents of vanadium and carbon and a high-alloyed ferritic-martensitic steel with a high chromium content. It provides the requested corrosion resistance, as well as high wear and fatigue resistance. At first, cylindrical roller thrust bearing washers type 81212 were produced with the new alloy, which was cladded onto AISI 1015. In further process steps, the welded semifinished component was finished to an axial bearing washer and finally examined in an FE-8 life cycle test regarding its fatigue behavior. After successful testing in the FE-8 test rig, a scale-up to larger components was applied. For this purpose, inner rings of the type NU256, consisting of AISI 1015, were cladded by PTA with the new alloy and examined in terms of material properties. The cladded rings were characterized by means of scanning acoustic microscopy, metallography, spark spectrometry, hardness measurements, and corrosion testing. Our studies proved that the new developed powder alloy has achieved the necessary requirements in terms of bearing fatigue strength, weld-ability, hardness, and corrosion resistance.
AB - Large-diameter slewing bearings are capable of supporting high loads and moments. They are typically used in applications where there is a need for rotational movements, such as in cranes, excavators, and wind turbines. With plasma-transferred arc (PTA) welding it is possible to apply high-performance materials in localized, stressed component regions. The process chain to produce these multimaterial components is called tailored forming because the welding procedure is followed by a subsequent hot forging process. One choice of material for the higher loaded areas is the commercially used bearing steel AISI 52100, which is characterized by high hardness, good wear, and fatigue resistance. However, AISI 52100 has limited corrosion resistance. As an alternative, this paper presents a modified powder alloy made from a high-alloyed martensitic steel with contents of vanadium and carbon and a high-alloyed ferritic-martensitic steel with a high chromium content. It provides the requested corrosion resistance, as well as high wear and fatigue resistance. At first, cylindrical roller thrust bearing washers type 81212 were produced with the new alloy, which was cladded onto AISI 1015. In further process steps, the welded semifinished component was finished to an axial bearing washer and finally examined in an FE-8 life cycle test regarding its fatigue behavior. After successful testing in the FE-8 test rig, a scale-up to larger components was applied. For this purpose, inner rings of the type NU256, consisting of AISI 1015, were cladded by PTA with the new alloy and examined in terms of material properties. The cladded rings were characterized by means of scanning acoustic microscopy, metallography, spark spectrometry, hardness measurements, and corrosion testing. Our studies proved that the new developed powder alloy has achieved the necessary requirements in terms of bearing fatigue strength, weld-ability, hardness, and corrosion resistance.
KW - bearing fatigue life
KW - multimaterial bearings
KW - plasma-transferred arc welding
KW - powder alloy
KW - slewing bearing
KW - tailored forming
KW - tribology
UR - http://www.scopus.com/inward/record.url?scp=85188562561&partnerID=8YFLogxK
U2 - 10.1520/STP164920220106
DO - 10.1520/STP164920220106
M3 - Conference contribution
AN - SCOPUS:85188562561
T3 - ASTM Special Technical Publication
SP - 201
EP - 226
BT - Bearing and Transmission Steels Technology
A2 - Beswick, John
PB - ASTM International
T2 - 1st ASTM Bearing and Transmission Steels Technology Symposium
Y2 - 2 November 2022 through 4 November 2022
ER -