Method for continuously manufacturing high-silicon steel sheet and continuous casting device

Abstract

The invention discloses a method for continuously manufacturing a high-silicon steel sheet and a continuous casting device. Pure iron powder and silicon powder are placed in a molten pool in a certain mass percent for alloy melting preparation, the molten pool is located in a strong magnetic field area generated by a magnet yoke coil in the whole process, after alloy is molten and is evenly mixed, an upper toothed water cooling copper disc rotating at high speed achieves fast cooling, a high-silicon steel thin belt is formed, the sheet is blown open through an air cutter above the sheet and is reliably stripped from the copper disc, and therefore the aim of manufacturing the high-silicon steel sheet through a direct extraction method is achieved, and the high-silicon steel sheet stripped from the copper disc enters a lower collection chamber with a soft pad or an air pad. the thickness, internal quality and surface quality of the high-silicon steel sheet can be controlled by controlling the immersion depth of the tooth face of the water cooling copper disc and alloy melt, the cooling water flow of the water cooling cooper disc, the rotating speed of the water cooling copper disc and the magnetic field intensity of an outer reinforcing static magnetic field. The size of the tooth face of the water cooling copper disc is controlled to control the width and length of the high-silicon steel sheet.

Description

technical field [0001] The invention relates to a metal material preparation method and continuous casting device, in particular to a silicon steel alloy melting preparation method and continuous casting device, which are applied in the technical fields of rapid near-net shape preparation of silicon steel thin slices and alloy structure control. Background technique [0002] Silicon steel is the most widely used soft magnetic alloy in the electrical and telecommunication industry. Its silicon content is generally 1.5wt.-4.5wt.%. It occupies an important position in soft magnetic materials and is the basis for the development of the electric power and telecommunication industry Material. Especially for high-silicon steel, when the silicon content is 6.5wt.%, the resistivity of the silicon steel sheet increases, the eddy current loss decreases, and the magnetostriction coefficient tends to zero, thus showing excellent performance at higher frequencies. Therefore, this kind of...

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Problems solved by technology

Although this technology has a flexible manufacturing system with versatility and product diversity, and the thickness and shape of the product can be controlled, there are still problems with the compactness of the product and the cost is high

The CVD process is to use the high-temperature chemical reaction between the surface of the traditional oriented and non-oriented silicon steel sheet and the silicide to enrich Si on the silicon steel sheet, and then perform diffusion treatment to prepare high-silicon steel. Although the CVD process has been successful, it is still There are problems, such as high deposition temperature, high energy consumption, severe corrosion of equipment, shortened service life, and corrosion pits and unevenness on the deposition surface, which requires further warm rolling and leveling, which brings great inconvenience to production

In addition, since the highly corrosive gas SiCl must be used 4 , so there are serious environmental problems

Also, the FeCl produced during the process 2 This exhaust gas not only seriously pollutes the environment, but also causes the loss of iron.

The molten salt electrodeposition method can also obtain a high silicon layer, and it is expected to prepare a high silicon steel after diffusion treatment. However, the molten salt electrodeposition method still has the disadvantages of high molten salt temperature, fluorine pollution, and high energy consumption. It is still in the research stage

It can be seen that the preparation of near-net-shaped high-silicon steel sheets still lacks an effective process.

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