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 | 300-312 |
| Number of pages | 13 |
| ISBN (electronic) | 978-0-8031-7693-5 |
| ISBN (print) | 978-0-8031-7692-8 |
| Publication status | Published - 1 Aug 2020 |
Publication series
| Name | ASTM Special Technical Publication |
|---|---|
| Volume | STP 1623 |
| ISSN (Print) | 0066-0558 |
Abstract
A future trend for machine components such as rolling element bearings is the application of multimaterials for manufacturing. In order to manufacture such components with appropriate quality, a new process chain called Tailored Forming was set up. Within this process chain, joined semifinished workpieces are utilized and formed, followed by a finishing process including heat treatment. Thus, a high-strength steel is joined with a metallic base material such as mild steel or aluminum. In case of a Tailored Forming process, various process steps for joining different materials and a subsequent forming are investigated. This requires high production quality as the production steps build on one another and, in particular, the joining process can significantly influence the component's properties. This is dependent on pores, blowholes, or delamination of the different materials as well as the intermetallic phases existing between steel and aluminum during the joining process. Since the semifinished workpieces go through further process steps, their testing must be nondestructive. Such a test methodology can be realized by scanning acoustic microscopy. The method allows for a tomographic representation of material defects in multimaterial components to enhance the production processes. Typically, ultrasound image examinations are being used in the medical technology. The transfer of this technique to applications with inorganic and, in particular, metallic samples is still associated with great challenges. Metallic components exhibit high velocities and small differences of the ultrasonic signal, which represents a challenge for the digital scanning of ultrasonic measurements for these components. The measurements were performed using a PVA-TePla system with water as the coupling medium. In the case of Tailored Formed bearings, it is possible to evaluate the joining zone regarding defects and pores. This article presents the findings of such evaluations for bearing washers manufactured by plasma welding with a subsequent forming process and impact extruded shafts.
Keywords
- Hybrid bearing, Nondestructive evaluation, Scanning acoustic microscopy, Tailored Forming, Ultrasonic material evaluation
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. 300-312 STP162320190068 (ASTM Special Technical Publication; Vol. STP 1623).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Ultrasonic Evaluation of Tailored Forming Components
AU - Pape, Florian
AU - Coors, Timm
AU - Matthias, Tim
AU - Behrens, Bernd-arno
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 C1 and C3. The processing steps for manufacturing the hybrid components, such as forming, heat treatment, and machining, were carried out within subprojects A2, A4, B3, 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 - A future trend for machine components such as rolling element bearings is the application of multimaterials for manufacturing. In order to manufacture such components with appropriate quality, a new process chain called Tailored Forming was set up. Within this process chain, joined semifinished workpieces are utilized and formed, followed by a finishing process including heat treatment. Thus, a high-strength steel is joined with a metallic base material such as mild steel or aluminum. In case of a Tailored Forming process, various process steps for joining different materials and a subsequent forming are investigated. This requires high production quality as the production steps build on one another and, in particular, the joining process can significantly influence the component's properties. This is dependent on pores, blowholes, or delamination of the different materials as well as the intermetallic phases existing between steel and aluminum during the joining process. Since the semifinished workpieces go through further process steps, their testing must be nondestructive. Such a test methodology can be realized by scanning acoustic microscopy. The method allows for a tomographic representation of material defects in multimaterial components to enhance the production processes. Typically, ultrasound image examinations are being used in the medical technology. The transfer of this technique to applications with inorganic and, in particular, metallic samples is still associated with great challenges. Metallic components exhibit high velocities and small differences of the ultrasonic signal, which represents a challenge for the digital scanning of ultrasonic measurements for these components. The measurements were performed using a PVA-TePla system with water as the coupling medium. In the case of Tailored Formed bearings, it is possible to evaluate the joining zone regarding defects and pores. This article presents the findings of such evaluations for bearing washers manufactured by plasma welding with a subsequent forming process and impact extruded shafts.
AB - A future trend for machine components such as rolling element bearings is the application of multimaterials for manufacturing. In order to manufacture such components with appropriate quality, a new process chain called Tailored Forming was set up. Within this process chain, joined semifinished workpieces are utilized and formed, followed by a finishing process including heat treatment. Thus, a high-strength steel is joined with a metallic base material such as mild steel or aluminum. In case of a Tailored Forming process, various process steps for joining different materials and a subsequent forming are investigated. This requires high production quality as the production steps build on one another and, in particular, the joining process can significantly influence the component's properties. This is dependent on pores, blowholes, or delamination of the different materials as well as the intermetallic phases existing between steel and aluminum during the joining process. Since the semifinished workpieces go through further process steps, their testing must be nondestructive. Such a test methodology can be realized by scanning acoustic microscopy. The method allows for a tomographic representation of material defects in multimaterial components to enhance the production processes. Typically, ultrasound image examinations are being used in the medical technology. The transfer of this technique to applications with inorganic and, in particular, metallic samples is still associated with great challenges. Metallic components exhibit high velocities and small differences of the ultrasonic signal, which represents a challenge for the digital scanning of ultrasonic measurements for these components. The measurements were performed using a PVA-TePla system with water as the coupling medium. In the case of Tailored Formed bearings, it is possible to evaluate the joining zone regarding defects and pores. This article presents the findings of such evaluations for bearing washers manufactured by plasma welding with a subsequent forming process and impact extruded shafts.
KW - Hybrid bearing
KW - Nondestructive evaluation
KW - Scanning acoustic microscopy
KW - Tailored Forming
KW - Ultrasonic material evaluation
UR - http://www.scopus.com/inward/record.url?scp=85115303627&partnerID=8YFLogxK
U2 - 10.1520/STP162320190068
DO - 10.1520/STP162320190068
M3 - Conference contribution
SN - 978-0-8031-7692-8
T3 - ASTM Special Technical Publication
SP - 300
EP - 312
BT - Bearing Steel Technologies
A2 - Beswick, John M.
PB - ASTM International
ER -