Production method of non-oriented silicon steel for agricultural motor

A technology of oriented silicon steel and production method, which is applied to furnace types, furnaces, heat treatment furnaces, etc., can solve the problems of increasing production costs and raw material costs, and achieve the effects of downgrading production costs and improving magnetic induction.

Active Publication Date: 2022-04-05
BENGANG STEEL PLATES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]At present, the existing non-oriented silicon steel for agricultural motors uses ordinary 50BW1300 non-oriented silicon steel, which is designed with ultra-low C content, C≤0.005%, and the steelmaking process needs to use Deep decarburization process, and 50BW1300 non-oriented silicon steel needs to add a relatively high amount of Al, the content is generally 0.20-0.35%, at the same time, the P element content of 50BW1300 non-oriented silicon steel is generally 0.03-0.06%, the production cost and raw material cost are both A substantial increase
Therefore, there are certain defects and deficiencies in the existing non-oriented silicon steel for agricultural motors. How to greatly reduce the manufacturing cost under the premise of meeting the quality requirements will become the key direction of research.

Method used

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  • Production method of non-oriented silicon steel for agricultural motor
  • Production method of non-oriented silicon steel for agricultural motor
  • Production method of non-oriented silicon steel for agricultural motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1. Steel components:

[0044] Among them, the mass percentages of C, Si, Mn, P, S, and ALs are: 0.032%, 0.40%, 0.25%, 0.013%, 0.004%, 0.028%, and the margin is FE and inevitable inclusions. Smelting chemical composition control, inclusions, and co-casting after molten chemical components;

[0045] 2, hot rolling; where the hot rolling heating temperature is 1050 ° C, hot rolling adopts high temperature final rolling and high temperature curling, the final rolling temperature is 860 ~ 890 ° C; the curl temperature is 680 to 720 ° C;

[0046] 3, pickling;

[0047] 4, cold rolling;

[0048] 5, continuous annealing; where the preheating section NOF temperature is 1000-1050 ° C, the RTF temperature of the radiation heating section is 900-930 ° C, and the heating section SF furnace temperature is annealed.

[0049] The finished product has a thickness of 0.5 mm.

Embodiment 2

[0063] 1. Steelmaking ingredients are:

[0064] Among them, the mass percentages of C, Si, Mn, P, S, and ALs are: 0.03%, 0.43%, 0.24%, 0.014%, 0.004%, 0.025%, and the margin is Fe and inevitable inclusions. Smelting chemical composition control, inclusions, and co-casting after molten chemical components;

[0065] 2, hot rolling; where the hot rolling heating temperature is 1050 ° C; hot rolling is high temperature rolling and high temperature curling, the final rolling temperature is 870 ° C; the curl temperature is 700 ° C;

[0066] 3, pickling;

[0067] 4, cold rolling;

[0068] 5, continuous annealing; where the preheating section NOF temperature is 1000-1050 ° C, the RTF temperature of the radiation heating section is 900-930 ° C, and the heating section SF furnace temperature is annealed.

[0069] The finished product has a thickness of 0.5 mm.

Embodiment 3

[0083] 1. Steelmaking ingredients are:

[0084] Among them, the mass percentages of C, Si, Mn, P, S, and ALs are: 0.03%, 0.43%, 0.24%, 0.014%, 0.004%, 0.025%, and the margin is Fe and inevitable inclusions. Smelting chemical composition control, inclusions, and co-casting after molten chemical components;

[0085] 2, hot rolling; where the hot rolling heating temperature is 1050 ° C; hot rolling adopts high temperature final rolling and high temperature curling, final rolling temperature 870 ° C; curl temperature is 700 ° C

[0086] 3, pickling;

[0087] 4, cold rolling;

[0088] 5, continuous annealing; where the preheating section NOF temperature is 1000-1050 ° C, the RTF temperature of the radiation heating section is 900-930 ° C, and the heating section SF furnace temperature is annealed.

[0089] The finished product has a thickness of 0.5 mm.

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Abstract

The invention relates to a production method of non-oriented silicon steel for an agricultural motor. The production method comprises the steps of molten steel chemical component design, a hot rolling process, a cold rolling process and the like. The molten steel comprises the following chemical components: less than or equal to 0.04% of C, 0.35-0.55% of Si, 0.10-0.30% of Mn, 0.02-0.06% of Als, less than or equal to 0.030% of P, less than or equal to 0.0040% of S, less than or equal to 0.003% of O, less than or equal to 0.003% of N and the balance of Fe and inevitable inclusions. Compared with common non-oriented electrical steel 50BW1300 currently used in household motors, the silicon steel produced through the method has the advantages that the magnetic induction is improved by 0.02 T or above, the design that the content of common C is smaller than or equal to 0.040% is adopted, deep decarburization is not needed, the cost of the steelmaking procedure is greatly reduced, Al-free and P-free and low-Mn content is adopted, the alloy cost is reduced, and compared with common 50BW1300 non-oriented electrical steel products, the production cost is greatly reduced.

Description

Technical field [0001] The present invention relates to the field of agricultural motor technology, and more particularly to a production method for non-replenishing silicon steel for agricultural motors. Background technique [0002] The agricultural motor is not taking electrical steel with a conventional number of electromagnetic properties, and requires lower production costs than conventional grades. [0003] At present, the existing agricultural motor has no need to use the ordinary 50BW1300-grade number of free silicon steel. It uses ultra-low C content design, C ≤ 0.005%, and the steelmaking process needs to use a deep off-carbon process, and 50bW1300 is not taking silicon steel to add a higher amount. Al, the content is generally 0.20 ~ 0.35%, and the P-element content of 50bW1300 no toilet silicon steel is generally 0.03 to 0.06%, and the cost of manufacturing cost and raw material increase is increased significantly. Therefore, existing agricultural motors have certain...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/06C21D8/12C22C33/04B21B1/46C21D9/00C21D9/52B21B37/74
Inventor 李毅伟李德君乔浩浩
Owner BENGANG STEEL PLATES
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