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Production method of steel plate for electromagnetic shielding and steel plate for electromagnetic shielding

An electromagnetic shielding and production method technology, applied in the fields of magnetic/electric field shielding, shielding materials, electrical components, etc., can solve the problem of low utilization rate, and achieve the effect of reducing investment cost, improving electromagnetic effect, and low investment cost

Pending Publication Date: 2022-03-08
GUANGDONG ZHONGSHENG ELECTROMAGNETIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

and conversions, underutilization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Iron water pretreatment: Using Kr (Kambara Reactor), the iron water is poured to the iron water package from the mixed iron or blast furnace tank, according to the initial [S] content of the iron water, the target [S] content determines the amount of spray, Control the blowing process to ensure that the sulfur content is ≤0.001% after the pre-treatment.

[0030] (2) Converter smelting: Pour the iron water after desulfurization into the top of the oxygen blown converter, and add waste steel accounting for 10% total weight to the converter, add limestone, fluorite in the converter in the process of blowing. Steel ingredients [C] ≤ 0.06%, [P] ≤ 0.04%, [S] ≤0.15%, the steel end point temperature is 1680 ° C, the oxygen is oxygenated.

[0031] (3) Blowing argon: adding a composite deoxidizer when the converter is turned out, blow argon in the process of converter, and measures the steel temperature, oxygen, sampling, and sampling according to the oxygen content in the steel ...

Embodiment 2

[0039] The difference from the first embodiment is that in step (4), [c] = 0.003%, [Si] = 0.55%, [Si] = 0.55%, [Mn] = 1.0%, [p] = 0.025 %, [S] = 0.003%; in step (5), the first rolling pressure rate is 54.2%, the second rolling pressure rate is 51.8%, the seventh rolling pressure rate is 13%, rolling In a hot rolled sheet having a thickness of 5 mm; in step (6), the steel sheet is rolled by a steel sheet of 2.0 mm after pickling the steel sheet; in step (7), the furnace temperature is set to 850 ° C; Step (8 In the sintering temperature of 300 ° C.

[0040] The yield strength of the electromagnetic shield produced by the present embodiment is 265 MPa, and the tensile strength is 330 MPa, and the elongation is 22%.

Embodiment 3

[0042] The difference from the first embodiment is that in the step (2), the total weight of the total weight of 15% is added to the converter, and the end point temperature is 1660 ° C; in step (4), the alloying steel ingredients [c ] = 0.004%, [Si] = 0.65%, [mn] = 0.80%, [p] = 0.025%, [S] = 0.003%; in step (5), the coil speed is 4.5m / min, The first rolling pressure rate is 53.2%, the second rolling pressure rate is 52.3%, and the 7.0% rolling pressure of the seventh rolling is 10.0%, the rolling is a hot rolled sheet having a thickness of 2.3 mm; step (6) The pickling temperature is 85 ° C, the pickling time is 80s; in step (7), the furnace temperature is set to 920 ° C; in step (8), the sintering temperature is 450 ° C.

[0043] The yield strength of the electromagnetic shield produced by the present embodiment is 250 MPa, and the tensile strength is 330 MPa, and the elongation is 22%.

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Abstract

The invention relates to production of steel plates, in particular to a production method of a steel plate for electromagnetic shielding and the steel plate for electromagnetic shielding, and the method comprises the following steps: pretreating molten iron, smelting the pretreated molten iron in a converter, blowing argon for deoxidation, feeding the argon-blown molten steel into a vacuum RH furnace for smelting, and adding a low-carbon alloy for alloying, the alloyed molten steel is cast into a plate blank through a thin plate blank continuous casting machine, a thin plate blank continuous casting and rolling production process is adopted for rolling to obtain a hot-rolled plate, the hot-rolled plate is subjected to acid pickling and cold rolling, then an electromagnetic wave shielding coating is adopted for coating and sintering, and the steel plate for electromagnetic shielding is prepared. On one hand, molten steel is refined by adopting a vacuum RH refining furnace, on the other hand, the shielding effect and the mechanical property of the steel plate are improved by adopting the electromagnetic shielding coating on the steel plate, the yield strength of the prepared steel plate for electromagnetic shielding can reach 265 MPa, the tensile strength can reach 330 MPa, and the ductility can reach 25%.

Description

Technical field [0001] The present invention relates to the production of steel sheets, and more particularly to a steel sheet for electromagnetic shielding steel sheets and a steel sheet for electromagnetic shielding. Background technique [0002] With the development of modern high-tech, electromagnetic interference (EMI) and electromagnetic compatibility (EMC) problems caused by electromagnetic waves, not only for electronic instruments, equipment, affecting their normal work, seriously restrict my country's electronic products and equipment. International competitiveness, and also pollute the environment, endanger human health; additional electromagnetic waves will also endanger national information security and military core confidential security, especially as new concept weapons, electromagnetic pulse weapons have achieved substantial breakthroughs, can be electronically Instrumentation equipment, power systems, etc., directly blow, resulting in temporary failure or perman...

Claims

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Application Information

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IPC IPC(8): C22C33/06C22C38/02C22C38/04C21C5/35C21C7/06C21C7/064C21C7/10C21D1/26C21D1/74C21D6/00C21D8/12H05K9/00
CPCC22C33/06C22C38/02C22C38/04C21C7/10C21C7/064C21C5/35C21C7/06C21C7/0006C21D1/26C21D8/1216C21D8/1244C21D1/74C21D6/005C21D6/008H05K9/0073Y02P10/20
Inventor 李国宝周峰李烈军姚顺强陆正谊白洪
Owner GUANGDONG ZHONGSHENG ELECTROMAGNETIC TECH CO LTD
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