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High corrosion-resistant and super-easy-cutting soft magnetic stainless steel wire rod and preparation method thereof

A stainless steel plate, corrosion-resistant technology, applied in the direction of inductance/transformer/magnet manufacturing, magnetic objects, manufacturing tools, etc., can solve the problems of inability to achieve easy cutting effect, increase production cost, increase production difficulty, etc., and achieve soft magnetic performance. Excellent, the effect of improving corrosion resistance and improving machinability

Active Publication Date: 2022-07-22
浙江青山钢铁有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Combined with Table 3, the patents disclosed by numbers 1 to 4 all added a large amount of sulfur (S>0.15) to the soft magnetic ferrite stainless steel to improve the machinability of the material, and achieved a certain effect, indicating that the addition of sulfur is to improve the machinability of the material. However, excessive sulfur will form coarse manganese sulfide with manganese and accumulate to exist, thus the corrosion source of the component materials will seriously affect the corrosion resistance. The inventions disclosed in numbers 1 to 4 have not explained how to eliminate the excessive sulfur The effect of sulfur
Patents No. 5 and No. 6 all added a small amount of sulfur (S<0.05) to the soft magnetic ferrite stainless steel, but after research, only adding a very small amount of easy-cutting element S cannot achieve a good easy-cutting effect
[0009] In Table 3, in order to improve the corrosion resistance of the inventions disclosed in numbers 1 to 6, Mo is added to the material, which shows that Mo can improve the corrosion resistance of the material to a certain extent, and some (numbers 2, 3, 6) are also added to it. Ti, Re, and V are used to improve the corrosion resistance of materials, but it also increases the difficulty of production, and is expensive, increasing production costs
[0010] To sum up, the soft magnetic stainless steel used in high-end products not only requires good corrosion resistance, but also good cutting performance, and also requires good machinability and soft magnetic properties. Traditional soft magnetic stainless steel materials have been Unable to meet these needs, high-end soft magnetic materials have been monopolized by foreign countries for a long time, and there is an urgent need to develop high-quality soft magnetic stainless steel in China

Method used

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  • High corrosion-resistant and super-easy-cutting soft magnetic stainless steel wire rod and preparation method thereof
  • High corrosion-resistant and super-easy-cutting soft magnetic stainless steel wire rod and preparation method thereof
  • High corrosion-resistant and super-easy-cutting soft magnetic stainless steel wire rod and preparation method thereof

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Effect test

Embodiment 1

[0065] In this embodiment, the high corrosion-resistant and super-easy-cutting soft magnetic ferrite stainless steel wire rod is mainly composed of the corresponding components in Table 1, the balance Fe and inevitable impurities in terms of mass percentage.

[0066] The stainless steel wire rod is prepared by the following method: it should be noted that the following percentages are all mass percentages,

[0067](1) Electric arc furnace smelting: 30t electric furnace is used for smelting, and waste high-chromium steel is added as raw material to the electric arc furnace for melting. The P content during tapping is controlled to 0.020%, and the amount of crude molten steel is 32t. (2) AOD furnace smelting: first add 1000Kg lime, then add 300Kg ferrochromium, add crude molten steel into the AOD furnace; control the slag basicity R to be 3.0 in the decarburization stage, and the C content at the end of decarburization to be 0.002%; add 950Kg Ferrosilicon was reduced. After the ...

Embodiment 2

[0069] In this embodiment, the high corrosion-resistant and super-easy-cutting soft magnetic ferrite stainless steel wire rod is mainly composed of the corresponding components in Table 1, the balance Fe and inevitable impurities in terms of mass percentage.

[0070] The stainless steel wire rod is prepared by the following method: it should be noted that the following percentages are all mass percentages,

[0071] (1) Electric arc furnace smelting: 30t electric furnace is used for smelting, and the waste high-chromium steel is melted in the electric arc furnace, and the tapping P: 0.019% is controlled, and the amount of crude molten steel is 31t. (2) AOD furnace smelting: first add 1000Kg lime, then add 280Kg ferrochromium, add crude molten steel into the AOD furnace; control the slag basicity R at 3.3 in the decarburization stage, and the C content at the end of decarburization is 0.001%; ​​add 950Kg Ferrosilicon was reduced. After reduction, 140Kg of ferric sulfide was adde...

Embodiment 3

[0073] In this embodiment, the high corrosion-resistant and super-easy-cutting soft magnetic ferrite stainless steel wire rod is mainly composed of the corresponding components in Table 1, the balance Fe and inevitable impurities in terms of mass percentage.

[0074] The stainless steel wire rod is prepared by the following method: it should be noted that the following percentages are all mass percentages,

[0075] (1) Electric arc furnace smelting: 30t electric furnace is used for smelting, and scrap steel is melted in the electric arc furnace, which can be high-chromium steel. (2) AOD furnace smelting: first add 1000Kg lime, then add 260Kg ferrochromium, add crude molten steel into the AOD furnace; control the slag basicity R at 3.0 in the decarburization stage, and the C content at the end of decarburization is 0.005%; add 960Kg Ferrosilicon was reduced. After reduction, 138Kg of ferrous sulfide was added in two batches, 69Kg per batch, and stirred for 8 minutes after each ...

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Abstract

The invention relates to the technical field of metal smelting, in particular to a soft magnetic ferrite stainless steel wire rod with high corrosion resistance and easy cutting. : 0.1 to 0.4%, Cr: 17.0 to 19.0%, Mo: 1.0 to 2.0%, Nb: 0.2 to 0.4%, Te: 0.005 to 0.015%, C≤0.03%, N≤0.03%, P≤0.03%, Mn ≤0.8%, Ni≤0.4%, the balance is Fe and other impurities. It also relates to a method for preparing the stainless steel wire rod, which includes sequentially smelting the raw materials in an electric arc furnace, smelting in an AOD furnace, LF ladle refining, continuous casting, continuous casting slab heating, rolling, solid solution and pickling, and finally obtains the stainless steel wire rod. finished product. The invention manufactures a soft magnetic stainless steel wire rod with both high corrosion resistance and super easy machinability through composition optimization, tellurium alloying and production process control, and the soft magnetic stainless steel wire rod also has excellent mechanical properties. Processability and soft magnetic properties. The soft magnetic stainless steel wire rod produced by the invention has a total material ratio of ≥95%, and the production cost is low.

Description

【Technical field】 [0001] The invention relates to the technical field of metal smelting, in particular to a soft magnetic ferrite stainless steel wire rod with high corrosion resistance and easy cutting and a preparation method thereof. 【Background technique】 [0002] Soft magnetic material is a kind of magnetic material with high permeability, high saturation magnetic induction and low coercivity. It is used in the manufacture of magnetic conductors, iron cores of transformers and relays, solenoid valves for household appliances, solenoid valves for automotive control systems, etc. [0003] Common soft magnetic materials include pure iron, silicon steel, iron-nickel alloy, and ferritic stainless steel. Pure iron and silicon steel have poor corrosion resistance. After being made into components, electroplating is required to increase corrosion resistance, which increases the cost and pollutes the environment. The cost of iron-nickel alloys is high. more advantageous. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/34C22C38/42C22C38/44C22C38/48C22C38/60C22C38/04C22C33/06C21D8/12C21D9/52C21C7/00C21D6/00B21B1/46H01F1/147H01F41/02
CPCC22C38/02C22C38/34C22C38/42C22C38/44C22C38/48C22C38/60C22C38/001C22C38/04C22C33/06C21D8/1222C21D8/1244C21D9/525C21C7/0056C21D6/004C21D6/005C21D6/008B21B1/463H01F1/147H01F41/02C21D2211/005C21D2211/004
Inventor 严道聪季灯平李立王贞应马振宇
Owner 浙江青山钢铁有限公司
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