ISSN 2594-5327
56º Congresso anual — Vol. 56 , num. 1 (2001)
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Commercial diamond wires are cutting tools used in the slabbing of dimension stones and in the cutting of concrete structures. This tool consists of an AISI 316 stainless steel cable on which diamond annular segments (pearls) are mounted with spacing between them. It was conceived a new route to process diamond wires, called “In Situ” Technology, whose fabrication involves mechanical fabrication processes such as rotary forging and wire drawing, copper tube restacking, and thermal treatments such as sintering and annealing. It was used the Cu 15volume%-Nb composite wires as the high tensile strength cable, covered with an external cutting rope, made in bronze 4weight%-diamond composite, along the overall wire surface. In this work is shown the manufacture route of the bronze 4weight%-diamond composite. Tensile tests were performed, reaching an ultimate tensile strength of 230MPa for the rope diameter of Ø=1.84mm. Scanning electron microscopy showed the diamond crystals distribution and integrity along the composite rope during its manufacture, as well as the diamond adhesion to the matrix. Cutting tests were carried out with the external cutting rope, presenting probable performance 4 times superior than the diamond saws. However, their probable performance was 5 to 8 times less than the conventional diamond wires.
Commercial diamond wires are cutting tools used in the slabbing of dimension stones and in the cutting of concrete structures. This tool consists of an AISI 316 stainless steel cable on which diamond annular segments (pearls) are mounted with spacing between them. It was conceived a new route to process diamond wires, called “In Situ” Technology, whose fabrication involves mechanical fabrication processes such as rotary forging and wire drawing, copper tube restacking, and thermal treatments such as sintering and annealing. It was used the Cu 15volume%-Nb composite wires as the high tensile strength cable, covered with an external cutting rope, made in bronze 4weight%-diamond composite, along the overall wire surface. In this work is shown the manufacture route of the bronze 4weight%-diamond composite. Tensile tests were performed, reaching an ultimate tensile strength of 230MPa for the rope diameter of Ø=1.84mm. Scanning electron microscopy showed the diamond crystals distribution and integrity along the composite rope during its manufacture, as well as the diamond adhesion to the matrix. Cutting tests were carried out with the external cutting rope, presenting probable performance 4 times superior than the diamond saws. However, their probable performance was 5 to 8 times less than the conventional diamond wires.
Palavras-chave
Diamond Wires, “In Situ” Technology, Sintering
Diamond Wires, “In Situ” Technology, Sintering
Como citar
Filgueira, Marcello; Pinatti, Daltro Garcia.
“IN SITU” DIAMOND WIRES – PART II: THE BRONZE 4 WEIGHT % DIAMOND COMPOSITE CUTTING ROPE,
p. 704-713.
In: 56º Congresso anual,
Belo Horizonte, Brasil,
2001.
ISSN: 2594-5327, DOI 10.5151/2594-5327-C01148
