Production method of non-oriented electrical steel hot rolled plate

A technology of grain-oriented electrical steel and production method, applied in the field of metallurgy, can solve the problems of difficulty in tapping, reduce production efficiency, affect the shape, thickness accuracy and performance of non-oriented electrical steel hot-rolled sheets, and achieve great promotion and application prospects. cost reduction effect

Inactive Publication Date: 2019-01-11
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the hot-rolled sheet production of non-oriented electrical steel is usually produced by a special hot-rolled sheet production line for electrical steel, but the cost of building a special hot-rolled sheet production line for non-oriented electrical steel is high, and the production cost is also high. Therefore, a domestic Some factories choose to produce non-oriented electrical steel hot-rolled sheets through the production lines of ordinary steel such as low-carbon aluminum-killed steel and high-strength structural steel, which can significantly reduce the production cost of non-oriented electrical steel hot-rolled sheets. When the non-oriented electrical stee

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1

[0016] The molten steel is smelted through the general steel production line, and the molten steel is cast into a slab. The length of the slab is 9800mm and the thickness of the slab is 160mm. The slab is heated in the heating furnace, and the temperature at which the slab enters the preheating section of the heating furnace It is 210°C. The slab is heated to 1000°C in the preheating section, and is heated to 1250°C in the heating section before being discharged. The temperature of the slab in the rough rolling process is 1230°C. The rough rolling process adopts high-speed rolling. Descaling to obtain an intermediate slab with a thickness of 40mm. The temperature of the intermediate slab entering the finishing rolling process is 1020°C, the exit speed of the finishing rolling process is m / s, and the temperature of the finished rolled sheet obtained in the finishing rolling process is 880°C and the thickness is 2.6mm, after testing, the obtained non-oriented ele...

Example Embodiment

[0018] Example 2

[0019] The molten steel is smelted through the ordinary steel production line, and the molten steel is cast into a slab. The length of the slab is 9700mm and the thickness of the slab is 200mm. The slab is heated in a heating furnace, and the temperature at which the slab enters the preheating section of the heating furnace It is 360°C. The slab is heated to 980°C in the preheating section, and is heated to 1120°C in the heating section before being discharged. The temperature of the slab in the rough rolling process is 1100°C. The rough rolling process adopts high-speed rolling. Descaled to obtain an intermediate slab with a thickness of 38mm. The temperature of the intermediate slab entering the finishing rolling process is 980°C, the exit speed of the finishing rolling process is 9m / s, and the temperature of the finished rolled sheet obtained in the finishing rolling process is 850°C and the thickness is 2.0mm, after testing, the obtained non-oriented electr...

Example Embodiment

[0021] Example 3

[0022] The molten steel is smelted through the general steel production line, and the molten steel is cast into a slab. The length of the slab is 10000mm and the thickness of the slab is 240mm. The slab is heated in a heating furnace, and the temperature at which the slab enters the preheating section of the heating furnace It is 330°C. The slab is heated to 1050°C in the preheating section, and is heated to 1200°C in the heating section before being discharged. The temperature of the slab during the rough rolling process is 1180°C. The rough rolling process adopts high-speed rolling. Descaling to obtain an intermediate slab with a thickness of 36mm. The temperature of the intermediate slab entering the finishing rolling process is 1000°C, the exit speed of the finishing rolling process is 14m / s, the temperature of the finished rolled sheet obtained in the finishing rolling process is 850°C, and the thickness is 3.0mm, after testing, the obtained non-oriented e...

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PUM

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Abstract

The invention relates to the field of steel making, in particular to a production method of a non-oriented electrical steel hot rolled plate. According to the production method of the non-oriented electrical steel hot rolled plate, molten steel is cast into a plate blank first, the plate blank is heated in a heating furnace, and then the heated plate blank is subject to roughing to obtain an intermediate blank, and the intermediate blank is subject to finishing rolling to obtain the hot rolled plate, wherein the thickness of the plate blank is 160-240mm, the plate blank is heated to 1120-1250DEG C in the heating furnace, the temperature of the plate blank in the roughing process is 1080-1230 DEG C, and the thickness of the intermediate blank is 36-40mm. By means of the production method of the non-oriented electrical steel hot rolled plate, the production of the non-oriented electrical steel hot rolled plate can be realized by adopting a common steel hot rolled plate production line,a special electrical steel hot rolled plate production line can be omitted, the production cost of the non-oriented electrical steel hot rolled plate is obviously reduced, and the production method has great popularization and application prospects.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a production method of a non-oriented electrical steel hot-rolled plate. Background technique [0002] Non-oriented electrical steel includes two categories: low-carbon and low-silicon non-oriented electrical steel with a silicon content of less than 0.5% and non-oriented electrical steel with a silicon content of 0.5%-6.5%. Core components. At present, the hot-rolled sheet production of non-oriented electrical steel is usually produced by a special hot-rolled sheet production line for electrical steel, but the cost of building a special hot-rolled sheet production line for non-oriented electrical steel is high, and the production cost is also high. Therefore, a domestic Some factories choose to produce non-oriented electrical steel hot-rolled sheets through the production lines of ordinary steel such as low-carbon aluminum-killed steel and high-strength structural steel, which can sig...

Claims

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Application Information

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IPC IPC(8): C21D8/12C21D6/00
CPCC21D6/005C21D6/008C21D8/1222
Inventor 董学强郭太雄冉长荣王羿
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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