| 摘要 |
PROBLEM TO BE SOLVED: To improve the cutting accuracy, the cutting speed and the durability, and to reduce the cutting loss by specifying the tensile strength of a high strength wire for a wire saw. SOLUTION: A high carbon steel wire containing about 0.80-1.10 wt.% carbon is used for a stock in which the tensile strength of a high strength wire for a wire saw is >=3800 MPa. During the patenting processing on a wire of a specified intermediate wire diameter, generation of decarburization and bainite or the like on a surface layer part is prevented as much as possible. During the drawing, the misalignment of a die and the wire is made small to the utmost using a die excellent in the circularity of a hole. A wet drawing method is preferable to ensure the dimensional accuracy and the toughness of the wire. The total drawing reduction of area required to obtain the tensile strength of >=3800 MPa is approximately >=98% when the carbon content is approximately 0.80 wt.%, and approximately 97% when the carbon content is approximately 0.90 wt.%. |
