CN110699616A - Amorphous strip and preparation method thereof - Google Patents

Abstract

The invention provides an amorphous strip, the component of which comprises Fe_{(100‑x‑y‑z‑a‑b)}Si_xB_yC_zM_aN_bWherein M is any one of Ni and Mo elements, and N is any one of Cr and Mn elements; wherein 6 < x < 11, 9 < y < 16, 1 < z < 8, 0 < a < 5, and 0 < b < 5; the amorphous strip has the beneficial technical effect of excellent comprehensive magnetic performance by the design optimization of alloy components, and meets the application requirement of an amorphous element with high performance requirement.

Description

Amorphous strip and preparation method thereof

Technical Field

The invention relates to the technical field of soft magnetic alloy metallurgy, in particular to an amorphous strip and a preparation method thereof.

Background

The amorphous material has high saturation magnetic induction, high magnetic conductivity, low coercive force, low high-frequency loss, good strong hardness, wear resistance, corrosion resistance, good temperature and environmental stability and the like, has excellent comprehensive performance, replaces permalloy, silicon steel and ferrite, is applied to power electronic technology, shows the characteristics of small volume, high efficiency, energy conservation and the like, and has the optimal cost performance ratio in all metal soft magnetic materials.

In the amorphous alloy applied in the prior art, like the conventional 1K101 Fe-Si-B ternary amorphous alloy, the corresponding amorphous element prepared from the amorphous alloy has a series of defects of low magnetic permeability, large coercive force, high loss and the like.

Disclosure of Invention

The invention aims to provide an amorphous strip and a preparation method thereof to overcome the defects of the prior art.

Amorphous strip of material having a composition comprising Fe_{(100-x-y-z-a-b)}Si_xB_yC_zM_aN_bWherein M is any one of Ni and Mo elements, and N is any one of Cr and Mn elements; wherein 6 < x < 11, 9 < y < 16, 1 < z < 8, 0 < a < 5, and 0 < b < 5.

Further, the component comprises Fe₇₆Si_7.5B₇C₄Ni_1.5Cr₃。

Further, the component comprises Fe₇₅Si₈B₇C₄Mo₁Cr₅。

Further, the component comprises Fe₇₈Si₆B₈C₃Ni₃Mn₂。

Further, the component comprises Fe₇₆Si₉B₇C₅Cr₃。

Further, the component comprises Fe₇₈Si₆B₉C₄Cr₃。

The preparation method of the amorphous strip comprises the following steps:

s1, smelting and preparing the master alloy, wherein the component expression of the master alloy obtained by smelting is Fe_{(100-x-y-z-a-b)}Si_xB_yC_zM_aN_bWherein M is any one of Ni and Mo elements, and N is any one of Cr and Mn elements; wherein 6 < x < 11, 9 < y < 16, 1 < z < 8, 0 < a < 5, and 0 < b < 5;

s2, preparing the mother alloy by a single-roller rapid quenching method or a double-roller rapid quenching method to obtain the amorphous strip.

The invention has the beneficial effects that:

the amorphous strip has the beneficial technical effect of excellent comprehensive magnetic performance by the design optimization of alloy components, and meets the application requirement of an amorphous element with high performance requirement.

Detailed Description

In order to make the technical solution, objects and advantages of the present invention more apparent, the following examples further illustrate the present invention.

The preparation method of the amorphous strip specifically comprises the following steps:

s1, smelting the alloy raw materials in a smelting furnace to prepare the master alloy;

and S2, preparing an amorphous strip by using the master alloy.

In step S1, the present invention provides a master alloy for Fe-based amorphous alloy, the composition expression of which is Fe_{(100-x-y-z-a-b)}Si_xB_yC_zM_aN_bWherein M is any one of Ni and Mo elements, and N is any one of Cr and Mn elements; wherein 6 < x < 11, 9 < y < 16, 1 < z < 8, 0 < a < 5, and 0 < b < 5.

The mother alloy for the iron-based amorphous alloy may be based on Fe₇₈Si₉B₁₃The preparation is carried out by adding elements to change the internal atomic arrangement of the amorphous alloy.

Specifically, the Fe is added to the mixture according to the preparation requirement₇₈Si₉B₁₃Based on the components of the alloy, C, Ni, Mo, Cr, Mn and other elements are added to carry out alloy component design; calculating the weight ratio of each required element according to the designed component atomic ratio, and further calculating the weight of each raw material required by each element added; and selecting metal raw materials with the calculated raw material components for smelting so as to prepare the master alloy for the iron-based amorphous alloy.

Example 1:

the chemical composition expression of the master alloy for the iron-based amorphous alloy is Fe₇₆Si_7.5B₇C₄Ni_1.5Cr₃。

Example 2:

the chemical composition expression of the master alloy for the iron-based amorphous alloy is Fe₇₅Si₈B₇C₄Mo₁Cr₅。

Example 3:

the chemical composition expression of the master alloy for the iron-based amorphous alloy is Fe₇₈Si₆B₈C₃Ni₃Mn₂。

Example 4:

the chemical composition expression of the master alloy for the iron-based amorphous alloy is Fe₇₆Si₉B₇C₅Cr₃。

Example 5:

the chemical composition expression of the master alloy for the iron-based amorphous alloy is Fe₇₈Si₆B₉C₄Cr₃。

Example 6:

in step S2, the master alloy for fe-based amorphous alloy can be prepared into a corresponding amorphous alloy ribbon by applying a single-roll rapid quenching method or a double-roll rapid quenching method of the prior art, so as to obtain an amorphous ribbon of the present invention.

Conventionally, the performance of the amorphous alloy is usually embodied by the performance of the amorphous strip, and the corresponding amorphous strip prepared by the corresponding iron-based amorphous alloy master alloy is embodied as follows:

example 7:

based on the application of the prior art, the amorphous strip material can be processed and prepared by the corresponding amorphous magnetic core, and the processing steps are as follows:

【1】 Winding or superposing the amorphous strip, and annealing to obtain a magnetic core matrix;

【2】 And carrying out surface coating treatment on the magnetic core substrate to obtain the amorphous magnetic core.

Example 8:

in the invention, a surface coating treatment method of an amorphous product is applied, which comprises the following steps:

(1) carrying out surface pretreatment on the amorphous product to form a pretreatment insulating layer on the surface of the amorphous product;

(2) carrying out preheating treatment on the amorphous product subjected to surface pretreatment, wherein the preheating treatment temperature is 180-240 ℃; then, performing roller coating treatment by using a second insulating material; and adsorbing and melting the second insulating material by the preheated amorphous product with self heat so as to form a roll coating on the pretreated insulating layer.

The second insulating material is acetal insulating powder, phenolic insulating powder or epoxy insulating powder.

The thickness range of the pre-treatment insulating layer is 20-150 mu m, and preferably 30-80 mu m; the thickness range of the roller coating is 100-400 mu m, and preferably 150-250 mu m.

Wherein, in the step (1), the method comprises the following steps:

(1-01) heating the amorphous product to raise the temperature, wherein the heating temperature is 150-250 ℃;

(1-02) performing electrostatic spraying treatment on the heated and heated amorphous product by using first insulating powder through electrostatic spraying equipment to form a pretreated insulating layer on the surface of the amorphous product; the first insulating powder is acetal insulating powder, phenolic insulating powder or epoxy insulating powder.

Example 9:

the present embodiment is different from the above embodiment 8 in that, in the step (1), it includes the following steps:

(1-11) spraying the amorphous product with a first insulating varnish by using a liquid spray gun; the first insulating paint is acetal insulating paint or phenolic insulating paint or epoxy insulating paint;

(1-21) baking and heating the sprayed amorphous product, wherein the baking and heating temperature is 100-150 ℃; so that the surface of the amorphous product is formed with the pretreatment insulating layer.

Specifically, the application principle of the amorphous product surface coating treatment method is as follows:

firstly, performing surface pretreatment on the amorphous product by using first insulating powder or first insulating paint to prepare a thin insulating pretreatment insulating layer on the surface of a rough amorphous product, so that the insulating property of the amorphous product is improved and the surface defects (such as residual holes) of the amorphous product are compensated to a certain extent; and then the amorphous product is subjected to roller coating treatment by using a second insulating material. Based on the premise that the amorphous product is preheated, the second insulating material in the material box can be adsorbed by the heated amorphous product in a roll coating mode to form a roll coating.

In the roll coating process, the amorphous product is in a rolling state in the material box, and the rolling speed of the amorphous product is controlled through the parameter and process adjustment of roll coating equipment, so that the uniformity of the roll coating formed by the amorphous product can be effectively controlled; the second insulating materials are intensively placed in a material box, so that the second insulating materials in the roll coating process are intensively arranged without scattering, the roll coating process basically does not consume the second insulating materials additionally, and raw materials are saved.

Compared with the prior art that the insulating coating on the surface of the amorphous product is processed by directly applying a spraying mode or directly applying a rolling coating mode, the scheme is based on the step-by-step processing application of the double-layer insulating coating, and the thickness and the uniformity of the insulating coating are controlled by adjusting the matching of the parameters of the rolling coating equipment, and the surface quality of the insulating coating is improved.

Based on the application of the amorphous product surface coating treatment method, the spraying qualification rate of the amorphous product is effectively improved, and the surface quality of the insulating coating of the amorphous product is improved; meanwhile, the uniformity of the thickness of the insulating coating can be ensured, and the coating material is saved.

In the step [ 2 ] of the above embodiment 7, the surface coating treatment method of the amorphous product may be applied to perform the surface coating treatment on the magnetic core substrate, so as to obtain the amorphous magnetic core of the present invention.

The above description is only a preferred embodiment of the present invention, and those skilled in the art may still modify the described embodiment without departing from the implementation principle of the present invention, and the corresponding modifications should also be regarded as the protection scope of the present invention.

Claims (7)

1. Amorphous strip material, characterised in that its alloy composition comprises Fe_{(100-x-y-z-a-b)}Si_xB_yC_zM_aN_bWherein M is any one of Ni and Mo elements, and N is any one of Cr and Mn elements; wherein 6 < x < 11, 9 < y < 16, 1 < z < 8, 0 < a < 5, and 0 < b < 5.

2. The amorphous ribbon of claim 1 wherein the composition comprises Fe₇₆Si_7.5B₇C₄Ni_1.5Cr₃。

3. The amorphous ribbon of claim 1 wherein the composition comprises Fe₇₅Si₈B₇C₄Mo₁Cr₅。

4. The amorphous ribbon of claim 1 wherein the composition comprises Fe₇₈Si₆B₈C₃Ni₃Mn₂。

5. The amorphous ribbon of claim 1 wherein the composition comprises Fe₇₆Si₉B₇C₅Cr₃。

6. The amorphous ribbon of claim 1 wherein the composition comprises Fe₇₈Si₆B₉C₄Cr₃。

7. A method of manufacturing an amorphous strip as claimed in any one of claims 1 to 6, comprising the steps of:

s1, smelting and preparing the master alloy, wherein the component expression of the master alloy obtained by smelting is Fe_{(100-x-y-z-a-b)}Si_xB_yC_zM_aN_bWherein M is any one of Ni and Mo elements, and N is any one of Cr and Mn elements; wherein 6 < x < 11, 9 < y < 16, 1 < z < 8, 0 < a < 5, and 0 < b < 5;

s2, preparing the mother alloy by a single-roller rapid quenching method or a double-roller rapid quenching method to obtain the amorphous strip.