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Method and device for welding high-silicon non-oriented electrical steel hot rolled plate

A technology for grain-oriented electrical steel and hot-rolled sheet, applied in the field of metal rolling, can solve the problems of connecting silicon-free hot-rolled sheets, etc., and achieve the effects of improving welding quality, improving performance, and simplifying process flow

Pending Publication Date: 2022-08-02
SHOUGANG ZHIXIN QIAN AN ELECTROMAGNETIC MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of connecting silicon-free hot-rolled sheets during the welding process of high-silicon strip steel, and realize direct butt welding between hot-rolled sheets of high-silicon non-oriented electrical steel,

Method used

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  • Method and device for welding high-silicon non-oriented electrical steel hot rolled plate
  • Method and device for welding high-silicon non-oriented electrical steel hot rolled plate
  • Method and device for welding high-silicon non-oriented electrical steel hot rolled plate

Examples

Experimental program
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Effect test

Embodiment 1

[0034] After repeated research on the production line, continuous comparison and improvement of the process, combined with the attached figure 1 , Embodiment 1 proposes a method for welding a high-silicon non-oriented electrical steel hot-rolled sheet, including the following steps when butt welding two high-silicon strip steels in the normalization process:

[0035] The thermal properties of the high-silicon strip steel are stable. If the heating time is insufficient, the penetration depth will be insufficient, and the absorbed laser energy will be too low. In the subsequent welding process, only the surface of the high-silicon strip steel will be heated and softened, while the middle part is too hard to be welded; if The heating time is too long, which leads to the deformation of the high-silicon strip steel, which also causes waste of production capacity. After repeated verification, by changing the welding speed, record and compare the relationship between the welding machi...

Embodiment 2

[0041] The difference from Example 1 is that the high-silicon strip goes through the smelting process and the hot-rolling process in turn, and after entering the normalization process, a high-silicon non-oriented electrical steel hot-rolled by the high-silicon non-oriented electrical steel provided in Example 2 is used for the high-silicon strip. Device for stable welding of plates, combined with attachment figure 2 , the device includes:

[0042] The speed control module 201 controls the welding speed of the welding machine to be 2.5-3.0 m / min, and melts the high-silicon strip to 95% of the thickness of the high-silicon strip;

[0043] The pressure control module 202 controls the pressure of the welding head of the welding machine at 5-7KN to flatten and melt the high silicon strip steel;

[0044] The heating power control module 203 controls the heating power of the welding machine at 13-15KW to improve the strength of the flat high silicon strip;

[0045] The wire feedin...

Embodiment 3

[0049] Based on the same inventive concept, Embodiment 3 of the present application provides an electronic device, such as image 3 As shown, a memory 304, a processor 302 and a computer program stored in the memory 304 and running on the processor 302 are included, and the processor 302 implements the steps of the above directed graph drawing method when executing the program.

[0050] Among them, in image 3 In the bus architecture (represented by bus 300 ), bus 300 may include any number of interconnected buses and bridges, bus 300 will include one or more processors represented by processor 302 and various types of memory represented by memory 304 circuits are linked together. The bus 300 may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and thus will not be described further herein. Bus interface 306 provides an interface between bus 300 and receiver 301 and transm...

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Abstract

The invention relates to the technical field of metal rolling, and discloses a method for welding a high-silicon non-oriented electrical steel hot rolled plate, which comprises the following steps when entering a normalizing process to perform butt welding on two pieces of strip steel: melting the strip steel by controlling the welding speed of a welding machine until the fusion depth of a weld joint heat affected zone of the strip steel exceeds 95% of the thickness of each piece of strip steel; flattening a weld heat affected zone of the molten strip steel by controlling the pressure of a welding head of a welding machine; by controlling the heating power of a welding machine, the strength of a weld joint heat affected zone of flat strip steel is improved; and by controlling the gap amount of a welding machine clamp and the wire feeding speed of the welding machine, welding seams between the strip steel are filled till the surface smoothness of the welding seams reaches the industrial standard. By controlling the welding speed, the welding head pressure, the heating power, the clamp clearance amount and the wire feeding speed, the problem that a silicon-free hot-rolled plate needs to be additionally connected in the high-silicon strip steel welding process is solved, the welding technological process is simplified, and the use performance, the production capacity and the enterprise economic benefits of a high-silicon non-oriented electrical steel hot-rolled plate product are improved.

Description

technical field [0001] The present application relates to the technical field of metal rolling, and in particular, to a method and device for welding a high-silicon non-oriented electrical steel hot-rolled sheet. Background technique [0002] Non-oriented electrical steel is a soft magnetic alloy of ferrosilicon with very low carbon content, and is an indispensable material in the power, electronics and military industries. Based on the continuous improvement of users' technical requirements for products such as iron loss and strength, non-oriented electrical steel products with higher silicon content have become the choice of more and more electrical markets. [0003] In the existing normalization process, the non-oriented electrical steel hot-rolled sheet is usually welded to the strip and the strip to achieve continuous production in the normalization process or annealing process to improve production efficiency. However, with the increase of the silicon content in the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/02B23K20/26B23K26/346
CPCB23K20/023B23K20/26B23K26/346
Inventor 何宾宾朱玉秀李洪野王建伟解攀龙项志明王建苗贺武
Owner SHOUGANG ZHIXIN QIAN AN ELECTROMAGNETIC MATERIALS CO LTD
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