Fret Saw Including a Cutting Wire Provided with Fixed Abrasive Grains each Including a Core Coated with a Hard Film
AssigneeChung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense
InventorsChien-Chih Kung, Ching-Yu Tso, Shang-Wanq Yeh, Hsiou-Jeng Shy
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Abstract
A fret saw includes a cutting wire and fixed abrasive grains provided on the cutting wire by electroplating. Each of the fixed abrasive grains includes a core and a hard film coated on the core. The core is 1 to 60 micrometers in diameter. The core is made of a material selected from the group consisting of a Ti metal and a Ti alloy. The hard film is 1 to 40 micrometers thick. The hard film covers about 30% to 90% of the surface of the core.
Claims15
A fret saw including:
- a cutting wire;
- and
- fixed abrasive grains provided on the cutting wire by electroplating and each made with a core and a hard film coated on the core, wherein the core is 1 to 60 micrometers in diameter and made of a material selected from the group consisting of a Ti metal and a Ti alloy, wherein the hard film is 1 to 40 micrometers thick and covers about 30% to 90% of the surface of the core.
A method for making a fret saw including the steps of:
- providing fixed abrasive grains each including a core coated with a hard coating;
- providing a cutting wire of steel;
- washing the cutting wire to remove oil and grease and to active and remove other undesired substances;
- coating the cutting wire with a preliminary coating;
- providing the fixed abrasive grains on the cutting wire;
- and
- coating the cutting wire with a primary coating.
Dependencies are inferred from the claim text.