Short process composite preparing method for gradient high silicon steel sheet

A high-silicon steel, short-process technology, applied in temperature control, metal rolling, manufacturing tools, etc., can solve the problems of complex preparation process, high equipment requirements and high cost of high-silicon steel sheet, to overcome brittle defects and ensure the shape of the plate. Quality, not easy to layer effect

Inactive Publication Date: 2018-04-13
XI'AN PETROLEUM UNIVERSITY +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a short-process composite preparation method for gradient high-silicon steel sheets, which solves the problems of complex preparation process, high equipment requirements, and high cost of high-silicon steel

Method used

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  • Short process composite preparing method for gradient high silicon steel sheet

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Effect test

Embodiment 1

[0025] (1) Raw material preparation: ordinary silicon steel containing about 3% silicon, silicon block containing 99.9% silicon;

[0026] (2) Melting of the core layer: Electromagnetic induction heating furnace is used, the melt temperature is about 1550°C, the silicon content of the core layer is designed to be 10% according to the composition ratio, and the cut length, width and height are (L×W×H)=110×60× 14 (unit: mm) rectangular cube;

[0027] (3) Cladding casting: the cladding layer is ordinary silicon steel containing about 3% silicon, using an electromagnetic induction heating furnace, the melt temperature is about 1500°C, and the thickness of the cladding layer is twice the thickness of the core layer. After cutting off the riser, the high The size of the silicon steel composite slab is (L×W×H)=145×95×70 (unit: mm);

[0028] (4) Forging: Use a small and medium-sized air hammer forging press, heating temperature is 1150°C, heat preservation 50min, forging temperature i...

Embodiment 2

[0035] (1) Raw material preparation: ordinary silicon steel containing about 3% silicon, silicon block containing 99.9% silicon;

[0036] (2) Melting of the core layer: Electromagnetic induction heating furnace is used, the melt temperature is about 1550°C, the silicon content of the core layer is designed to be 10% according to the composition ratio, and the cut length, width and height are (L×W×H)=110×60× 20 (unit: mm) rectangular cube;

[0037] (3) Cladding casting: the cladding layer is ordinary silicon steel containing about 3% silicon, using electromagnetic induction heating furnace, the melt temperature is about 1500°C, and the thickness of the cladding layer is 1.25 times the thickness of the core layer. After cutting off the riser, the high The size of the silicon steel composite slab is (L×W×H)=145×95×70 (unit: mm);

[0038] (4) Forging: Use a small and medium-sized air hammer forging press, heating temperature is 1180°C, heat preservation for 1h, forging temperatur...

Embodiment 3

[0045] (1) Raw material preparation: ordinary silicon steel containing about 3% silicon, silicon block containing 99.9% silicon;

[0046] (2) Core layer smelting: Electromagnetic induction heating furnace is used, the melt temperature is about 1550°C, the silicon content of the core layer is designed to be 11% according to the composition ratio, and the cut length, width and height are (L×W×H)=110×60× 20 (unit: mm) rectangular cube;

[0047] (3) Cladding casting: the cladding layer is ordinary silicon steel containing about 3% silicon, using electromagnetic induction heating furnace, the melt temperature is about 1500°C, and the thickness of the cladding layer is 1.25 times the thickness of the core layer. After cutting off the riser, the high The size of the silicon steel composite slab is (L×W×H)=145×95×70 (unit: mm);

[0048] (4) Forging: Use a small and medium-sized air hammer forging press, heating temperature is 1200°C, heat preservation 70min, forging temperature is 95...

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Abstract

The invention discloses a short process composite preparing method for a gradient high silicon steel sheet. The short process composite preparing method includes the following specific steps that a cladding casting method is used for preparing a casting blank of the gradient high silicon steel sheet; the casting blank is heated within the scope ranging from 1200 DEG C to 1250 DEG C to be forged and pressed to be subject to heat preservation for 30 min-50 min, and then hot rolling is carried until the thickness is 2 mm; the casting blank is heated within the scope ranging from 550 DEG C to 650DEG C to be subject to heat preservation for 40 min-60 min, and then warm rolling is carried out until the thickness is 0.1 mm-0.3 mm; a high silicon steel composite plate is subject to diffusion annealing treatment, different diffusion annealing technological parameters are controlled, and the high silicon steel sheet with silicon distributed in different grades is obtained; cold rolling is carried out on the composite plate at the room temperature, and after cold rolling is carried out, the bright-surface gradient high silicon steel sheet with the thickness ranging from 0.06 mm-0.15 mm is obtained. According to the short process composite preparing method, a lamellar composite preparation technology is adopted, limitation of high silicon steel indoor temperature brittleness to plastic making of the high silicon steel sheet is broken through, and production of the high silicon steel sheet on a traditional rolling machine is achieved.

Description

technical field [0001] The invention belongs to the technical field of metal material preparation and processing, relates to a short-flow composite preparation method for gradient high-silicon steel sheets, and provides a short-flow and high-efficiency preparation and processing technology for alloy sheets with high performance, poor plasticity and difficult processing. Background technique [0002] Silicon steel, also known as electrical steel, generally has a silicon element content of 0.5-4.5% (mass percentage, the same below), and is a silicon-iron soft magnetic alloy with a very low carbon content. High-silicon steel generally refers to electrical steel with a silicon content greater than 3.5%. With the increase of silicon content, the excellent soft magnetic properties of high silicon steel are more obvious, such as the iron loss is greatly reduced, the magnetostriction coefficient is reduced, the resistivity and magnetic permeability are increased, etc., which is very...

Claims

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Application Information

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IPC IPC(8): B21B1/38B21B47/00B21B37/74B21B37/58B21C37/02B22D19/16C21D1/26C21D6/00
CPCB21B1/38B21B37/58B21B37/74B21B47/00B21B2001/386B21B2261/20B21B2271/02B21C37/02B22D19/16C21D1/26C21D6/00
Inventor 姬帅韩静涛雷西虎刘忠军
Owner XI'AN PETROLEUM UNIVERSITY
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