Brazing inserts

Details Brazing inserts Brazing inserts

E - Fixed Constructions

21

B

76/21, 113/80, 2

E21B 10/00 (2006.01) B21K 5/02 (2006.01) B23K 1/20 (2006.01) B23K 31/02 (2006.01) E21B 10/58 (2006.01)

Patent

CA 1072075

ABSTRACT OF THE DISCLOSURE THIS invention relates to a method of brazing a hard metal in- sert into a recess in the bit of a rock working tool and to a tool produced by the method. The method includes the steps of shaping both the underside of the insert and the base of the recess to a tapered point with an angle of taper of about 130°, placing the insert, which is a loose fit in the recess, so that the base of the bit fits complementally into the tapered base of the recess to centralise the insert in the recess and causing a moulten brazing medium to flow into the recess be- tween its walls and those of the insert.

295172

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