Details
| Original language | English |
|---|---|
| Title of host publication | Bearing Steel Technologies |
| Subtitle of host publication | 12th Volume, Progress in Bearing Steel Metallurgical Testing and Quality Assurance |
| Editors | John M. Beswick |
| Publisher | ASTM International |
| Pages | 277-299 |
| Number of pages | 23 |
| ISBN (electronic) | 9780803176928 |
| ISBN (print) | 978-0-8031-7692-8 |
| Publication status | Published - 1 Aug 2020 |
| Event | 12th International Symposium on Rolling Bearing Steels - Denver, United States Duration: 15 May 2019 → 17 May 2019 |
Publication series
| Name | ASTM Special Technical Publication |
|---|---|
| Volume | STP 1623 |
| ISSN (Print) | 0066-0558 |
Abstract
Ensuring the reliability of wind turbine (WT) generators and reducing maintenance intervals are major levers for reducing the levelized cost of energy and thus increasing competitiveness of WTs. With increasing development in the energy sector, the dimensions and load of individual components such as slewing bearings also rise nonlinearly. To manufacture such bearings with a diameter of a few meters, low-alloy heat-treatable steels are commonly used. In order to optimize large-diameter rolling element bearings, a novel process chain for the resource-efficient production of these machine elements using steel-steel multimaterial systems has been developed. A high-quality bearing steel with a high resistance to wear and fatigue, such as AISI 52100 or better, is applied by plasma powder deposition welding on low-cost steel blanks. The base material fulfils basic requirements regarding structural load-bearing capacity, thus serving as a support structure. High-strength steel serves as a raceway for a rolling element bearing and extends over the fatigue life-determining material volume under cyclic rolling contact fatigue. This hybrid workpiece is then formed by ring rolling, which guarantees material- and process-related advantages. For bearing dimensions of several meters in diameter, this approach can be more economical and can result in better material properties than producing a bearing consistently from high-quality and high-purity bearing steel. First results of this approach are presented, in which the process described here was performed on cylindrical roller thrust bearings and a cylindrical roller bearing inner ring as analogy models on a laboratory scale. Here, an AISI 52100 cladding was welded onto a lower-strength base material (AISI 1022M). Microsections after welding, forming, and heat treatment are presented, showing a recrystallization and microstructure transformation. Bearing fatigue tests were carried out, which showed good agreement to classical rolling contact fatigue theory. These findings will later be scaled to larger geometric dimensions.
Keywords
- AISI 52100, Bearing fatigue life, Hybrid bearing, Plasma transferred arc welding, Slewing bearing, Tailored forming, Tribology, Wind turbine bearing
ASJC Scopus subject areas
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Bearing Steel Technologies: 12th Volume, Progress in Bearing Steel Metallurgical Testing and Quality Assurance. ed. / John M. Beswick. ASTM International, 2020. p. 277-299 (ASTM Special Technical Publication; Vol. STP 1623).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research
}
TY - GEN
T1 - Manufacturing of Large-Diameter Rolling Element Bearings by Steel-Steel Multimaterial Systems
AU - Coors, Timm
AU - Mildebrath, Maximilian
AU - Pape, Florian
AU - Hassel, Thomas
AU - Maier, Hans Jürgen
AU - Poll, Gerhard
N1 - Funding Information: The results presented in this paper were obtained within the Collaborative Research Centre 1153 “Process chain to produce hybrid high performance components by Tailored Forming” in Subprojects C3 and A4. The subsequent processing steps to complete the hybrid components, such as forming, heat treatment, and machining were carried out within Subprojects C1, A2, and B4. The authors thank the German Research Foundation for financial support of this project (Grant Number: 252662854).
PY - 2020/8/1
Y1 - 2020/8/1
N2 - Ensuring the reliability of wind turbine (WT) generators and reducing maintenance intervals are major levers for reducing the levelized cost of energy and thus increasing competitiveness of WTs. With increasing development in the energy sector, the dimensions and load of individual components such as slewing bearings also rise nonlinearly. To manufacture such bearings with a diameter of a few meters, low-alloy heat-treatable steels are commonly used. In order to optimize large-diameter rolling element bearings, a novel process chain for the resource-efficient production of these machine elements using steel-steel multimaterial systems has been developed. A high-quality bearing steel with a high resistance to wear and fatigue, such as AISI 52100 or better, is applied by plasma powder deposition welding on low-cost steel blanks. The base material fulfils basic requirements regarding structural load-bearing capacity, thus serving as a support structure. High-strength steel serves as a raceway for a rolling element bearing and extends over the fatigue life-determining material volume under cyclic rolling contact fatigue. This hybrid workpiece is then formed by ring rolling, which guarantees material- and process-related advantages. For bearing dimensions of several meters in diameter, this approach can be more economical and can result in better material properties than producing a bearing consistently from high-quality and high-purity bearing steel. First results of this approach are presented, in which the process described here was performed on cylindrical roller thrust bearings and a cylindrical roller bearing inner ring as analogy models on a laboratory scale. Here, an AISI 52100 cladding was welded onto a lower-strength base material (AISI 1022M). Microsections after welding, forming, and heat treatment are presented, showing a recrystallization and microstructure transformation. Bearing fatigue tests were carried out, which showed good agreement to classical rolling contact fatigue theory. These findings will later be scaled to larger geometric dimensions.
AB - Ensuring the reliability of wind turbine (WT) generators and reducing maintenance intervals are major levers for reducing the levelized cost of energy and thus increasing competitiveness of WTs. With increasing development in the energy sector, the dimensions and load of individual components such as slewing bearings also rise nonlinearly. To manufacture such bearings with a diameter of a few meters, low-alloy heat-treatable steels are commonly used. In order to optimize large-diameter rolling element bearings, a novel process chain for the resource-efficient production of these machine elements using steel-steel multimaterial systems has been developed. A high-quality bearing steel with a high resistance to wear and fatigue, such as AISI 52100 or better, is applied by plasma powder deposition welding on low-cost steel blanks. The base material fulfils basic requirements regarding structural load-bearing capacity, thus serving as a support structure. High-strength steel serves as a raceway for a rolling element bearing and extends over the fatigue life-determining material volume under cyclic rolling contact fatigue. This hybrid workpiece is then formed by ring rolling, which guarantees material- and process-related advantages. For bearing dimensions of several meters in diameter, this approach can be more economical and can result in better material properties than producing a bearing consistently from high-quality and high-purity bearing steel. First results of this approach are presented, in which the process described here was performed on cylindrical roller thrust bearings and a cylindrical roller bearing inner ring as analogy models on a laboratory scale. Here, an AISI 52100 cladding was welded onto a lower-strength base material (AISI 1022M). Microsections after welding, forming, and heat treatment are presented, showing a recrystallization and microstructure transformation. Bearing fatigue tests were carried out, which showed good agreement to classical rolling contact fatigue theory. These findings will later be scaled to larger geometric dimensions.
KW - AISI 52100
KW - Bearing fatigue life
KW - Hybrid bearing
KW - Plasma transferred arc welding
KW - Slewing bearing
KW - Tailored forming
KW - Tribology
KW - Wind turbine bearing
UR - http://www.scopus.com/inward/record.url?scp=85116930263&partnerID=8YFLogxK
U2 - 10.1520/STP162320190064
DO - 10.1520/STP162320190064
M3 - Conference contribution
SN - 978-0-8031-7692-8
T3 - ASTM Special Technical Publication
SP - 277
EP - 299
BT - Bearing Steel Technologies
A2 - Beswick, John M.
PB - ASTM International
T2 - 12th International Symposium on Rolling Bearing Steels
Y2 - 15 May 2019 through 17 May 2019
ER -