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Comparison of spinning trajectory designing methods for products with noncircular cross-section Cover

Comparison of spinning trajectory designing methods for products with noncircular cross-section

Materials Science-Poland
Volume 40 (2022): Issue 1 (March 2022)
By: Marcin Majewski,  Tomasz Gądek,  Leszek Klimek and  Łukasz Nowacki  
Open Access
|Jul 2022

Figures & Tables

Fig. 1

Strain distribution in rotational forming for circular mandrel (left) and non-circular mandrel (right)
Strain distribution in rotational forming for circular mandrel (left) and non-circular mandrel (right)

Fig. 2

Diagram of spinning a noncircular cross-section [3]
Diagram of spinning a noncircular cross-section [3]

Fig. 3

Diagram comparing shear forming and metal spinning
Diagram comparing shear forming and metal spinning

Fig. 4

Mandrel in the shape of an ellipse with dimensions 60 mm × 80 mm
Mandrel in the shape of an ellipse with dimensions 60 mm × 80 mm

Fig. 5

Mandrel in the shape of a square with dimensions 80 mm × 80 mm
Mandrel in the shape of a square with dimensions 80 mm × 80 mm

Fig. 6

Trajectories of spinning movements: ellipse
Trajectories of spinning movements: ellipse

Fig. 7

Trajectories for mandrel square: Method 2 at the top of the picture and Method 3 at the bottom of the picture
Trajectories for mandrel square: Method 2 at the top of the picture and Method 3 at the bottom of the picture

Fig. 8

Measuring sites A and B on the square draw-piece
Measuring sites A and B on the square draw-piece

Fig. 9

Chart of average m values depending on forming angle: Method 1
Chart of average m values depending on forming angle: Method 1

Fig. 10

Drawpiece in the shape of an ellipse
Drawpiece in the shape of an ellipse

Fig. 11

Chart of average m values depending on forming angle: Method 2
Chart of average m values depending on forming angle: Method 2

Fig. 12

Drawpiece in the shape of a rectangular obtained by Method 2
Drawpiece in the shape of a rectangular obtained by Method 2

Fig. 13

Chart of average m values depending on forming angle: Method 3
Chart of average m values depending on forming angle: Method 3

Fig. 14

Square drawpiece obtained by Method 3
Square drawpiece obtained by Method 3

Fig. 15

Visualization of measured hardness points in sample 1
Visualization of measured hardness points in sample 1

Fig. 16

Hardness Vickers HV 0,1 near the surface
Hardness Vickers HV 0,1 near the surface

Thickness measurements for the square drawpiece spun by Method 3 (negative values are the result of compressive strains of the material)

Height (mm)MeasurementPRTms
5A−1.2%−1.5%−1.4%−1.6%−1.4%0.00
B−6.0%−2.0%−3.2%−1.2%−3.1%0.02
15A5.7%5.7%4.0%12.0%6.8%0.04
B6.8%0.4%7.2%8.8%5.8%0.04
30A2.0%2.8%4.8%2.0%2.9%0.01
B8.8%6.0%8.4%2.8%6.5%0.03
45A2.0%2.8%4.8%2.0%2.9%0.01
B−1.6%1.2%−0.4%0.0%−0.2%0.01

Thickness measurements: ellipse, 15 mm from frontal area

Item no.Angle (°)MeasurementPRTms
118A0.5%0.5%1.0%1.0%0.5%0.5%0.7%0.00
B0.5%0.5%0.5%1.0%1.0%0.5%0.7%0.00
C0.0%1.0%0.5%1.0%1.0%1.0%0.8%0.00
230A4.5%8.0%8.5%6.5%7.0%4.5%6.5%0.02
B5.0%8.5%8.5%7.0%8.0%5.5%7.1%0.02
C4.0%10.5%9.5%7.5%6.5%5.0%7.2%0.03
345A13.0%14.0%14.5%12.0%9.5%4.5%11.3%0.04
B15.5%14.0%12.5%10.0%9.5%6.0%11.3%0.03
C7.5%8.5%7.5%7.0%5.5%3.5%6.6%0.02
468A13.5%22.5%29.0%28.5%22.5%19.5%22.6%0.06
B19.5%30.0%30.0%22.5%18.5%17.0%22.9%0.06
C17.5%28.5%27.5%19.5%12.0%11.5%19.4%0.07
590A14.0%22.0%34.0%35.5%21.0%10.5%22.8%0.10
B26.0%35.0%44.0%38.5%24.5%16.5%30.8%0.10
C51.0%55.5%51.5%47.5%36.5%11.5%42.3%0.16

Thickness measurements for the square drawpiece spun by Method 2

Height (mm)MeasurementPRTms
5A9.3%14.7%13.3%13.3%12.7%0.02
B0.0%7.3%6.0%8.0%5.3%0.04
15A39.3%50.7%45.3%38.0%43.3%0.06
B26.7%36.7%39.3%40.0%35.7%0.06
30A44.7%68.0%10.7%6.7%32.5%0.29
B45.3%50.0%51.3%49.3%49.0%0.03

Strength of material depending on angle-to-rolling direction

Angle (°)Rp0.2 (MPa)Rm (MPa)A80mm (%)
037.072.747.2
4538.678.946.7
9037.568.953.3
DOI: https://doi.org/10.2478/msp-2022-0012 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 116 - 129
Submitted on: Feb 11, 2022
Accepted on: May 20, 2022
Published on: Jul 13, 2022
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
metal spinning,
noncircular spinning,
asymmetric spinning,
sheet metal
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2022 Marcin Majewski, Tomasz Gądek, Leszek Klimek, Łukasz Nowacki, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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