Mechanical Properties of Square Section Bar Joint by Center Insert Drive Friction Welding Method

Kimura, Masao; Fujii, Toshimitsu; Kusaka, Masahiro; Suyama, Kenji

doi:10.2207/qjjws.25.343

Cited by 8 publications

(6 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The authors also previously developed a centre insert drive friction welding method that was carried out with a friction welding machine equipped with a centre drive gear system. 12 A flat disc type insert piece less than 10 mm long was inserted into a centre gear supported by the drive gears connected to a drive motor and assembled as a simple mechanism for the centre drive gear system. In this case, the transferable torque of the insert piece during the friction process is affected by the torsional shear strength toward the circumferential direction along the edge of the weld interface.…”

Section: Introductionmentioning

confidence: 99%

Development of autocompleting friction welding method

Kimura¹,

Fujii²,

Utsumi³

et al. 2008

Science and Technology of Welding and Joining

View full text Add to dashboard Cite

This paper describes an autocompleting friction welding method that was carried out to weld with an insert piece set between fixed base metals. The base metal was low carbon steel, and the faying surface of the fixed specimen had a 10 mm diameter. The effect of the thickness of the insert piece (insert thickness) on the joining phenomena was investigated. When the insert thickness was 3?2 mm and the friction welding conditions were a friction speed of 27?5 s 21 and friction pressure of 36 MPa, the insert piece had a shear fracture toward the circumferential direction in the peripheral portion of the weld interfaces by the initial peak produced during the friction process. The joint also had cracks at the adjacent region of the weld interfaces, although it had the same tensile strength as the base metal. On the other hand, the joint made using the insert piece with a groove on its peripheral portion had the same tensile strength as the base metal, where it fractured. This joint also had 90u bend ductility without cracks. In this case, the optimum insert thickness was 4?0 mm, and the thickness at the bottom of the grooves (groove bottom thickness) was 1?2 mm with an 11 mm inner groove diameter, and the friction welding conditions were a friction speed of 27?5 s 21 and friction pressure of 36 MPa. In conclusion, a sound friction welded joint was made by an autocompleting friction welding method.

show abstract

Section: Introductionmentioning

confidence: 99%

Development of autocompleting friction welding method

Kimura¹,

Fujii²,

Utsumi³

et al. 2008

Science and Technology of Welding and Joining

View full text Add to dashboard Cite

show abstract

“…The joint was made using a rotating insert piece, and the fixed base metals were set between them. The detailed characteristics of the insert center drive friction welding machine were previously described (Kimura et al, 2007(Kimura et al, , 2008(Kimura et al, , 2009a.…”

Section: Methodsmentioning

confidence: 99%

“…This type of friction welding method is also effective to weld such long lengths as pipelines (Spray, 1988;Faes et al, 2007Faes et al, , 2008aFaes et al, ,b, 2009Komizo, 2008). In a previous work (Kimura et al, 2007), the authors developed a center insert drive friction welding method that was carried out with a friction welding machine equipped with a center drive gear system. This machine is composed of the center drive gear system with a simple mechanism, and a flat disk type insert piece less than 10 mm long was inserted into a centre gear supported by the drive gears connected to a drive motor and assembled.…”

Section: Introductionmentioning

confidence: 99%

Strength enhancement of autocompleting medium and high carbon steels friction welded joints

Kimura

Utsumi

Kusaka

et al. 2011

Journal of Materials Processing Technology

View full text Add to dashboard Cite

“…The detailed characteristics of the insert centre drive friction welding machine were previously described. 5,6 During friction welding operations, friction pressure and friction speed were set to 90 MPa and 27?5 s 21 respectively. Forge pressure was applied at an identical friction pressure, i.e.…”

Section: Methodsmentioning

confidence: 99%

“…Hence, a centre drive type of friction welding is desirable to be applied to welds of such shapes of workpieces. [2][3][4][5] In the previous work, 5 the authors developed a centre insert drive friction welding method that was carried out with a friction welding machine equipped with a centre drive gear system. Figure 1 shows the schematic illustration of a shear fracture in the circumferential direction (referred to as circumferential shear fracture) in the peripheral portion of the weld interfaces at the insert piece by friction torque.…”

Section: Introductionmentioning

confidence: 99%

Selection guide of insert piece shape for steel joint by autocompleting friction welding method

Kimura

Utsumi

Kusaka

et al. 2009

Science and Technology of Welding and Joining

View full text Add to dashboard Cite

An autocompleting friction welding method, which was developed by the authors, is to weld with using a rotating insert piece set between fixed base metals. This paper describes the selection guide of the insert piece size for steel joints by the autocompleting friction welding method. The base metal was low carbon steel (LCS), and the weld faying surface of the fixed specimen had a 10 mm diameter. The effect of the thickness at the bottom of the grooves for the insert piece (groove bottom thickness) on the joining phenomena was investigated. When the joint was made at a friction pressure of 90 MPa with a friction speed of 27?5 s 21 , the insert piece had a shear fracture towards the circumferential direction (circumferential shear fracture) in the peripheral portion of the weld interfaces by the initial peak produced during the friction process. In this case, the insert piece had the following dimensions: the thickness was 4?0 mm, and the groove bottom thickness was 1?2 mm or over with an inner groove diameter of 11 mm. In particular, the joint with a groove bottom thickness of 1?2 mm had 100% joint efficiency and the LCS base metal fracture with no crack at the weld interface. The value of a circumferential shear fracture (CSF value) was defined and calculated by the ratio between the theoretical and the actual generated friction torques. When the CSF value nearly equalled 1, the joint had 100% joint efficiency and the LCS base metal fracture with no crack at the weld interface.

show abstract

Mechanical Properties of Square Section Bar Joint by Center Insert Drive Friction Welding Method

Cited by 8 publications

References 8 publications

Development of autocompleting friction welding method

Development of autocompleting friction welding method

Strength enhancement of autocompleting medium and high carbon steels friction welded joints

Selection guide of insert piece shape for steel joint by autocompleting friction welding method

Contact Info

Product

Resources

About