Browse > Article

A Study on Mechanical Properties According to the Depth of Notch in SM20C Friction Welding Zone  

Lee, Se-Gyoung (충남대학교 대학원 기계공학과)
Chung, Jun-Mo (충남대학교 대학원 기계공학과)
Park, Chun-Bong (충남대학교 교육대학원)
Min, Taeg-Ki (충남대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.16, no.1, 2007 , pp. 1-8 More about this Journal
Abstract
The present study examined the mechanical properties of the friction welding zone of solid and hollow shafts made with SM20C according to the depth of the notch. Friction welding was conducted at welding conditions of 2,000 rpm, friction pressure of 60MPa, friction time of 1.4 seconds, upset pressure of 100MPa, and upset time of 2.0 seconds. In the tensile strength test, the tensile strength decreased as the depth of the notch increased. Tensile strength was moderately high when the depth of the notch was 2mm. The tensile strength of the welding zone increased as the friction revolution radius increased, because the latter led to the generation of adequate friction heat. According to the hardness test, hardness likewise increased as e friction revolution radius increased. In the bending test, the bend strength of the solid shaft decreased when the depth of the notch was 0-2mm but increased when the latter was 3-5mm. With regard to the hollow shaft, the bend strength drastically decreased when the depth of the notch was 3-4mm. Upon examination it was found that the microstructure became finer when the friction revolution radius increased.
Keywords
Friction welding; SM20C; Friction time; Friction pressure; Tensile strength;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Min, T. K., 1992, Properties of Friction Welding Between the Back Metal of Bushing Part and Flange Part in A-Sn Alloy Metal Bearing, Dong-A University, Busan, Korea, pp. 4-5
2 Nicholas, E. D., 1997, 'Where Industry Uses Friction Welding,' Welding Design and Fabrication, Aug. pp. 74-76
3 Park, K. H., Min, T. K., Yoon, Y. J. and Park, C. S., 2006, 'A Study on the Joint Properties According to the Friction Welding Area Change of Carbon Steel(SM25C),' Transaction of KSMTE, Vol. 15, No.1, pp. 102-107   과학기술학회마을
4 Chung, H. O., 1999, A Study on the Friction Welding Properties of SM25C Steel Rod and STS304 Austenite Stainless Plate, Chung-Nam National University, Daejon, Korea, pp. 12-15
5 Lee, S. J., 2005, A Study on Mechanical Properties According to the Radius Change Position of Outer Circumference in A5083 Friction Welding, Chung-Nam National University, Daejon, Korea, pp. 21-38
6 Lee, S. Y. and Yun, B. S., 2001, 'Heat Transfer Analysis of Friction Welding of A2024 to SM45C,' Transaction of KSMTE, Vol. 10, No. 1, pp. 65-70
7 Vill, V. I., 1957, 'Friction Welding of Metals,' Svarochne Proizvodstvo, Vol. 3, No. 9, pp. 8-23
8 Kang, S. B., 1997, Properties of Friction Welding Between Cu-W Sintering Alloy and Cu, Chung-Nam National University, Daejon, Korea, pp. 10-13
9 Yun, B. S., 2000, A Study on the Mechanical Properties of A2024 and SM45C, Chung-Nam National University, Daejon, Korea, pp. 25
10 Spindler, D. E., 1994, 'What Industrial Needs to Know about Friction Welding,' Welding Journal, Mar, pp. 37-42
11 Toms, H. H., 1962, 'Properties of Friction Welds between and Dissimilar Metals,' Welding Research Supplement, Oct. pp. 448-450