High-strength high-saturation magnetically soft alloy for generator and strip preparation method thereof

Abstract

The invention provides high-strength high-saturation magnetically soft alloy for a generator and a strip preparation method thereof. The high-strength high-saturation magnetically soft alloy comprisesthe following chemical components of 47.5%-50.8% of Co, 1.8%-2.3% of V, 0.02%-0.5% of Nb, 0.5%-3% of Ni, 0.25%-1.2% of Mo and 0.07%-0.3% of Zr, and the rest component is Fe. The strip preparation method comprises the following process steps that firstly, matching is conducted according to the chemical components; secondly, smelting is conducted with a vacuum induction method; thirdly, finishing and forging are conducted on a smelted steel ingot; fourthly, a processed-forged square billet forms a hot-rolled strip billet through hot rolling; fifthly, surface treatment is conducted through pickling and polishing during cold rolling, and cold rolling cogging is conducted; and sixthly, rolling is conducted through a cluster mill till cold rolling total deformation is not lower than 90%. According to the high-strength high-saturation magnetically soft alloy material special for the high-power aerogenerator, the lowest strip coercivity can reach 100 A / m, magnetic induction intensity reaches2.3 T, with the higher saturation magnetic induction intensity, the size and weight are reduced greatly when a same-power motor is made, and flexibility of the complete machine is ensured.

Description

technical field [0001] The invention relates to the field of smelting, in particular to a high-strength and high-saturation soft magnetic alloy for generators and a preparation method for strips thereof. Background technique [0002] With the progress of science and technology and the needs of the development of economy and military industry, especially in the aerospace and aviation fields, in order to ensure the mobility and flexibility of the whole machine, the requirements for small size and light weight of components are becoming more and more stringent. The continuous improvement of the degree of informatization has continuously increased the design indicators of large motors and other electromagnetic devices, and the requirements for the stability of their work have become higher and higher. These high requirements for the use of the materials for the production of electromagnetic devices have stricter performance requirements, requiring materials to have higher magnet...

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Problems solved by technology

National standard motor alloy materials have the problems of high coercive force, low magnetic induction intensity and low mechanical properties, while foreign advanced soft magnetic alloy materials have superior coercive force and other properties than domestic ones, but they are expensive and have a long production cycle. To meet the domestic procurement needs of small batches and multiple varieties, and there is a serious problem of relying on foreign imports and being controlled by others

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