Cold-rolled electromagnetic steel plate for rapid cycling synchrotron and manufacturing method thereof

Abstract

The invention discloses a cold-rolled electromagnetic steel plate for a rapid cycling synchrotron and a manufacturing method thereof. The method comprises the following steps of: (1) smelting, performing RH refining treatment and casting into a blank, wherein the cold-rolled electromagnetic steel plate comprises the following components in percentage by weight: 0.001-0.003 percent of C, 0.60-0.90 percent of Si, 0.40-0.70 percent of Mn, less than or equal to 0.04 percent of P, 0.60-0.80 percent of Al, less than or equal to 0.0035 percent of S, less than or equal to 0.003 percent of N and the balance of Fe; (2) performing hot rolling; (3) normalizing at the temperature 960-980 DEG C for 30-60 seconds; 4) performing acid washing and cold rolling; (5) annealing at the temperature 850-870 DEG C for 13-15 seconds; and (6) coating to obtain a non-oriented silicon steel product. In the invention, the coercive force of the cold-rolled electromagnetic steel plate is small and returns to zero after the exciting strength is up to 0 oersted, and the coercive force Hc of a material is less than or equal to 79.6 A/m; the magnetic induction B50 is more than or equal to 1.75 T; the iron loss P15/50 is less than or equal to 4.2 W/kg, and is less than or equal to 3.2 W/kg after eliminating stress and annealing.

Description

technical field [0001] The invention relates to a cold-rolled electromagnetic steel sheet, in particular to a cold-rolled electromagnetic steel sheet used in a fast-cycle synchrotron and a manufacturing method thereof. Background technique [0002] One of the important features of the design of the fast-cycle synchrotron is that the excitation current works under the sinusoidal current state of the DC bias, and the high-energy fast-cycle synchrotron (RCS) is used to accelerate the particles to increase the energy. When the beam current After the energy reaches a certain requirement, it is extracted from the ring and transmitted to the spallation target. According to the characteristics of this device, the following higher requirements are put forward for the cold-rolled electromagnetic steel sheet for making magnets: [0003] The coercive force is small, and returns to zero after the excitation intensity reaches 10 Oersted, and the coercive force Hc of the material is less ...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that due to the large critical leveling amount, it is easy to cause strain aging, and the hardness of the pure iron plate increases rapidly after leaving the factory, which makes it difficult for users to punch

If the pure iron strip is annealed in a bell furnace, the performance of the magnet will fluctuate due to the fluctuation in the long direction of the pure iron strip

[0007] 2. The fast-cycle synchrotron devices in the United States and Germany mainly use ordinary non-oriented e

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