Cutting steel wire, steel material for cutting steel wire and production method thereof

Abstract

The invention discloses a sawing wire, steel for the sawing wire, and a production method thereof. The production method comprises the steps of desulfurizing molten iron till S in the molten iron is no more than 0.002%; mixing the desulfurized molten iron and steel scrap into molten steel, and desiliconizing and dephosphorizing the molten steel at 1330 DEG C-1380 DEG C; then, decarburizing the molten steel by blowing oxygen, and obtaining the molten steel comprising no less than 0.3% of C, no more than 0.01% of P and no more than 0.01% of S, wherein the temperature of the molten steel is no lower than 1650 DEG C; adding desoxidants and slagging media to the molten steel for deoxidation alloying; then, refining the molten steel for regulating chemical components and inclusions, wherein thecomponents of the inclusions comprise no more than 10% of Al2O3 and no more than 30% of CaO; degassing the refined molten steel and removing the inclusions to obtain the molten steel, wherein the sizeof the inclusions of the molten steel is no more than 10 [mu]m, and the number density of the inclusions is no more than 0.5 g / m<3>; and casting the molten steel into steel billets. The steel, prepared with the production method, for the sawing wire can be used as base metal for producing the sawing wire with the diameter of no more than 100 <mu>m and the tensile strength of no lower than 4600 MPa; and the length of the continuous wire in the process of manufacturing the sawing wire is no less than 200 km.

Description

technical field [0001] The invention belongs to the technical field of iron and steel smelting, and relates to a production method of steel for cutting steel wire, and also relates to a steel for cutting steel wire prepared by the production method, and a cutting steel wire further processed from the steel for cutting steel wire . Background technique [0002] Cutting wire, also known as cutting wire, cutting steel wire, and cutting wire, is a special wire used for cutting, and it is also a special steel wire with a diameter of less than 0.20mm and a galvanized copper surface. It is widely used as a consumable material In the fields of energy, aviation, equipment and public facilities, such as cutting and forming of solar silicon wafers, quartz materials, monocrystalline silicon, and polycrystalline silicon. It is even possible to inlay tiny diamond particles on the cutting wire to make a diamond cutting wire, or diamond wire, diamond cutting wire, or diamond wire. [0003...

AI Technical Summary

Problems solved by technology

In view of the fact that the steel for cutting steel wire prepared by the current production process in this technical field has problems such as large inclusion size, high number density of inclusions, and low tensile strength, the performance of the existing cutting steel wire cannot meet market demand.

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