Reforged flight bar and method of making the same

Details Reforged flight bar and method of making the same Reforged flight bar and method of making the same

B - Operations, Transporting

65

G

B65G 17/30 (2006.01) B21J 1/06 (2006.01) B21J 9/08 (2006.01) B23P 6/00 (2006.01) B65G 19/22 (2006.01)

Patent

CA 2151169

Flight bars as commonly used in long wall mining equipment are described. A method of making a metal flight bar from a worn flight bar is provided. The method comprises the steps of: predetermining an acceptable wear envelope for worn flight bars; measuring a worn flight bar to determine whether it falls within the wear envelope; selecting a worn flight bar having dimensions which place it within the wear envelope; heating the selected flight bar to a predetermined forging temperature; forcing the selected flight bar between dies to form or deepen a pocket adjacent each tip and to urge the metal displaced thereby to fill in the worn areas whereby the selected flight bar assumes the original outer configuration except for the pockets. Reforged flight bars in accordance with this method are provided. The reforged flight bars provide for many benefits, including significant cost saving.

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