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A kind of manufacturing method of hot-rolled steel strip of magnetic material

A manufacturing method and magnetic material technology, applied in the field of magnetic material hot-rolled steel strip manufacturing, can solve the problems of time-consuming and labor-intensive forging process, difficulty in ensuring quality and mechanical properties, and increasing production costs of enterprises, so as to reduce forging process, facilitate implementation and The effect of control and low production cost

Active Publication Date: 2020-06-19
宜兴紫鑫电子新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the continuous casting and rolling production process is suitable for the rolling of carbon steel and ordinary stainless steel, but it is difficult to guarantee the quality and mechanical properties of 1J85 alloy steel with 80% Ni content and 5% Mo content without going through the forging process; the forging process is time-consuming and laborious. Increase the production cost of the enterprise

Method used

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  • A kind of manufacturing method of hot-rolled steel strip of magnetic material
  • A kind of manufacturing method of hot-rolled steel strip of magnetic material
  • A kind of manufacturing method of hot-rolled steel strip of magnetic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Smelting: Smelting in a 100Kg vacuum furnace

[0031] 2. Slab pouring process:

[0032] 2.1, flat ingot size 75*220*900mm

[0033] 2.2. Heat preservation and heating power 30Kw during pouring

[0034] 2.3. The pouring temperature is 1530°C and the pouring speed is 45Kg / min

[0035] 3. Slab hot rolling process:

[0036] 3.1. Use a planer to peel the flat ingot to 70*215*900mm

[0037] 3.2. Use an electric heating furnace to heat the slab, increase the temperature by 30°C per minute until it reaches 1260°C, and hold for 60 minutes

[0038] 3.3. Allocation of hot rolling passes (13 passes in total): when rolling slabs, control the starting rolling temperature to 1200°C and the rolling speed to 2m / s;

[0039] 70-55-40-32.5-27.0-23.0-19.5-16.3-13.5-11.2-9.2-7.6-6.3-5.0mm

[0040] 3.4. Hot-rolled finished product 5*225*Lmm.

[0041]

Embodiment 2

[0043] 1. Smelting: Smelting in a 100Kg vacuum furnace

[0044] 2. Slab pouring process:

[0045] 2.1, flat ingot size 75*220*900mm

[0046] 2.2. Heat preservation and heating power 30Kw during pouring

[0047] 2.3. The pouring temperature is 1550°C and the pouring speed is 35Kg / min

[0048] 3. Slab hot rolling process:

[0049] 3.1. Use a planer to peel the flat ingot to 70*215*900mm

[0050] 3.2. Use an electric heating furnace to heat the slab, and raise the temperature by 40°C per minute, until it is heated to 1280°C, and the holding time is 50 minutes

[0051] 3.3. Distribution of hot rolling passes (14 passes in total): when rolling slabs, control the starting rolling temperature to 1210°C and the rolling speed to 4m / s

[0052] 70-55-40-32.5-27.0-23.0-19.5-16.3-13.5-11.2-9.2-7.6-6.3-5.0-4.0mm

[0053] 3.4. Hot-rolled finished product 4*225*Lmm.

[0054]

Embodiment 3

[0056] 1. Smelting: Smelting in a 100Kg vacuum furnace

[0057] 2. Slab pouring process:

[0058] 2.1, flat ingot size 75*275*700mm

[0059] 2.2. Heat preservation and heating power 30Kw during pouring

[0060] 2.3. The pouring temperature is 1580°C and the pouring speed is 30Kg / min

[0061] 3. Slab hot rolling process:

[0062] 3.1. Use a planer to peel the flat ingot to 70*275*700mm

[0063] 3.2. Use an electric heating furnace to heat the slab, increase the temperature by 50°C per minute until it reaches 1250°C, and hold for 70 minutes

[0064] 3.3. Allocation of hot rolling passes (12 passes in total): when rolling slabs, control the starting rolling temperature to 1190°C and the rolling speed to 5m / s

[0065] 70-55-40-32.5-27.0-23.0-19.5-16.3-13.5-11.2-9.1-7.4-6.0mm

[0066] 3.4. Hot-rolled finished product 6*280*Lmm.

[0067]

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Abstract

The invention relates to a manufacturing method of a magnetic material 1J85 hot-rolled steel strip. The manufacturing method comprises the following steps that 1J85 alloy is smelted by a vacuum furnace, a variable-width ingot mold is poured into a flat ingot in a vacuum mode after the smelting is finished, the flat ingot is subjected to surface milling and then heated, and then the flat ingot is rolled through a reversible rolling mill. According to the manufacturing method, the 1J85 hot-rolled steel strip is produced by adopting a process which is directly hot-rolled without a forging process, the production efficiency is improved, and the production cost is saved.

Description

technical field [0001] The invention relates to the technical field of manufacturing a magnetic material hot-rolled steel strip, in particular to a method for manufacturing a magnetic material 1J85 hot-rolled steel strip. Background technique [0002] Because of its high magnetic permeability and low coercive force, the magnetic material 1J85 is widely used in the production of current transformer cores, magnetic heads, magnetic shields and other devices used in military industry, aerospace, electronics, precision instruments and instruments and other industries. The most used magnetic material 1J85 is the cold-rolled steel strip with a thickness of 0.05-0.20mm for making iron cores, and the 1J85 hot-rolled steel strip with a thickness of 4-6mm is a necessary raw material for cold-rolled steel strip. [0003] At present, the 1J85 hot-rolled steel strips obtained at home and abroad are smelted and cast into round ingots by vacuum induction furnace, and processed into forging ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D8/12B22D7/00
CPCB22D7/00C21D8/1222
Inventor 周培彬
Owner 宜兴紫鑫电子新材料有限公司
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