ANALYSIS ON HORIZONTAL CRACKING OF RAIL FLASH WELDING JOINT

LI Da-dong

Volume 25 Issue 4

Oct. 2004

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LI Da-dong. ANALYSIS ON HORIZONTAL CRACKING OF RAIL FLASH WELDING JOINT[J]. IRON STEEL VANADIUM TITANIUM, 2004, 25(4): 47-52.

Citation:

LI Da-dong. ANALYSIS ON HORIZONTAL CRACKING OF RAIL FLASH WELDING JOINT[J]. IRON STEEL VANADIUM TITANIUM, 2004, 25(4): 47-52.

LI Da-dong. ANALYSIS ON HORIZONTAL CRACKING OF RAIL FLASH WELDING JOINT[J]. IRON STEEL VANADIUM TITANIUM, 2004, 25(4): 47-52.

Citation:

LI Da-dong. ANALYSIS ON HORIZONTAL CRACKING OF RAIL FLASH WELDING JOINT[J]. IRON STEEL VANADIUM TITANIUM, 2004, 25(4): 47-52.

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ANALYSIS ON HORIZONTAL CRACKING OF RAIL FLASH WELDING JOINT

LI Da-dong

Panzhihua Iron and Steel Research Institute, Panzhihua 617000, Sichuan, China

Received Date: 2004-08-10
Available Online: 2023-12-07

Abstract

Abstract

The cracking fractures of U75V rail flash welding joint were inspected using metallographic microscope and SEM. A lot of dimples wood grain area was found in crack source, and the cracks expanded from the other side of rail to weld and stopped at weld. The decarbonization on surface of the cracks confirm the cracks generate in high temperature period of weld,so it is welding hot crack.
- rail,
- flash welding,
- welding joint,
- cracking,
- failure analysis

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