High-strength high-saturation magnetically soft alloy for generator and strip preparation method thereof
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A soft magnetic alloy and high-strength technology, applied in the field of smelting, can solve the problems of being restricted by people, high coercive force, and long production cycle, and achieve the effects of reducing volume and weight, ensuring flexibility, and reducing coercive force
Inactive Publication Date: 2019-11-26
陕西航空精密合金有限公司
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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
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[0033] Example 1:
[0034] A high-strength and high-saturation soft magnetic alloy for generators, whose chemical composition (by weight) is as follows: Co: 47.5-50.8%, V: 1.8-2.3%, Nb: 0.02-0.5%, Ni: 0.5- 3%, Mo: 0.25-1.2%, Zr: 0.07-0.3%, and the rest is Fe.
[0035] The development of new formulations of materials can only be achieved by a large number of ratio experiments and tests, which requires a lot of manpower, material and financial resources. Therefore, domestic research on alloy materials for manufacturing aerospace motors is less, and most of them are purchased from foreign advanced materials. As an existing domestic 1J22 alloy, its performance is obviously inferior to that of foreign countries. Specifically, it is a national standard motor alloy material, which has the problems of high coercive force, low magnetic induction intensity, and low mechanical properties. Therefore, in this embodiment, a formulation of a high-strength and high-saturation soft magnetic a...
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[0052] Example 2:
[0053] Please refer to figure 1 As shown, a strip preparation method of a high-strength high-saturation soft magnetic alloy for a generator comprises the following process steps:
[0054] Step 1: Ingredient distribution ratio: carry out the load-bearing ratio of raw materials according to the following formula, and the formula is calculated in parts by weight: Co: 47.5-50.8%, V: 1.8-2.3%, Nb: 0.02-0.5%, Ni: 0.5-3 %, Mo: 0.25-1.2%, Zr: 0.07-0.3%, and the rest is Fe; Step 2: Vacuum smelting: After the composition ratio is completed, the vacuum induction method is used for smelting, and the steel ingot is obtained from the furnace;
[0055] Step 3: Steel ingot forging: finishing and forging the smelted steel ingot to form a square billet with a smooth surface;
[0056] Step 4: Hot rolling: heat the forged billet to 1150±20°C, and hot-roll it into a hot-rolled strip;
[0057] Step 5: pre-treatment of cold rolling: cold rolling adopts the method of pickling a...
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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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