Composite wire for wire cutting and preparation method thereof
A composite wire, wire cutting technology, applied in stone processing equipment, manufacturing tools, fine working devices, etc., can solve problems such as reducing steel wire cutting ability, increasing cutting cost, and wire breakage.
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[0039] The present invention also proposes a preparation method for the above-mentioned composite wire, wherein the preparation method of the surface-modified chromium oxide comprises the following steps: dispersing the chromium oxide in acetonitrile, then adding vinylsiloxane therein, and stirring at room temperature for 4 -6 hours, then filter, wash 5-7 times with dichloromethane, bake at 60-80°C for 8-10 hours.
[0040] In some embodiments of the present invention, the mass ratio of chromium oxide, acetonitrile and vinyl siloxane is (3-5):(10-15):1.
[0041] In some embodiments of the present invention, the metal wire is prepared by the following procedures: S1: cast into a slab according to the chemical composition of the metal wire; S2: heating the slab to 900°C-1100°C; S3 : hot-rolling the cast slab after the above heating process at 900°C-1000°C; S4: the hot-rolled cast slab is coiled in the temperature range of 800-950°C to form a rough product, and then melted at 500°...
Embodiment 1
[0043] A composite wire for wire cutting, consisting of a metal wire and a wear-resistant resin layer coated on the outer surface of the metal wire. The chemical composition of the metal wire is C: 0.70, Cr: 0.20, Mn: 0.30, Zr: 0.15, W: 0.02, Ca: 0.010, B: 0.020, N: 0.006, and the balance is Fe and unavoidable inclusions. The wear-resistant resin layer is prepared from the following raw materials in parts by mass: 15 parts of surface-modified chromium oxide, 60 parts of phenolic resin, 10 parts of polyacrylonitrile-based carbon fiber, 100 parts of tetrahydrofuran, and 0.5 part of azobisisoheptanonitrile.
[0044] Wherein, the thickness of the wear-resistant resin layer is 15 μm, the drying temperature is 150° C., and the drying time is 15 minutes.
[0045] Further, the surface of the wear-resistant resin layer is embossed with a spiral pattern; preferably, the depth of the pattern is 5 μm, and the width of the pattern is 0.05 mm; the distance between the roots of the grooves o...
Embodiment 2
[0049] A composite wire for multi-wire cutting. The composite wire includes a metal wire and a wear-resistant resin layer coated on the outer surface of the metal wire. The chemical composition of the metal wire is C: 0.80, Cr: 0.30, Mn: 0.40, Zr: 0.16, W: 0.03, Ca: 0.010, B: 0.015, N: 0.005, the balance is Fe and unavoidable inclusions; the wear-resistant resin layer is prepared from the following raw materials in parts by mass: oxidation of surface modification 20 parts of chromium, 50 parts of epoxy resin, 12 parts of viscose-based carbon fiber, 150 parts of tetrahydrofuran, and 0.6 parts of azobisisobutyronitrile.
[0050] Wherein, the thickness of the wear-resistant resin layer is 20 μm, the drying temperature is 200° C., and the drying time is 20 minutes.
[0051] Further, the surface of the wear-resistant resin layer is embossed with a spiral pattern; preferably, the depth of the pattern is 7 μm, the width of the pattern is 0.06 mm; the distance between the roots of the...
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