A kind of hot-dip galvanized steel sheet for liquid crystal backplane with yield strength of 330mpa
A technology with a yield strength of 330mpa, applied in the field of hot-dip galvanized steel sheet and its manufacture, and cold-rolled hot-dip galvanized steel sheet, can solve problems such as distortion and low strength, and achieve improved uniformity, low composition characteristics, and stable implementation process Effect
Active Publication Date: 2022-07-15
SHANGHAI MEISHAN IRON & STEEL CO LTD
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Problems solved by technology
[0011] The object of the present invention is a hot-dip galvanized steel sheet for a liquid crystal backplane with a yield strength of 330 MPa and its manufacturing method, which mainly solves the problem of low strength of the hot-dip galvanized steel sheet for a liquid crystal backplane of 0.28 to 0.35 mm in the prior art, and the The technical problem of twisting meets the forming processing requirements of the liquid crystal module industry for stamping and processing 0.28-0.35mm hot-dip galvanized steel sheets for liquid crystal backplanes
Method used
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Embodiment 4
[0060] The yield strength R of the steel plate of Example 4 P0.2 is 363MPa, the tensile strength is 409MPa, and the elongation after fracture is A 80mm It is 27%, and the yield strength in the width direction of the steel plate is 7MPa. Through the composition design of low-carbon steel, the use of hot-rolled structure control, large compression ratio and rapid annealing technology has realized the thin-gauge galvanized steel plate for liquid crystal modules. manufacture.
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Abstract
The invention discloses a hot-dip aluminum-zinc steel sheet for liquid crystal backplanes with a yield strength of 330 MPa, which mainly solves the technical problems of low strength and distortion after processing and forming in the prior art. The present invention provides a hot-dip galvanized steel sheet for a liquid crystal backplane with a yield strength of 330 MPa. The chemical composition weight percentages of the substrate are: C: 0.09-0.11%, Si: 0-0.03%, Mn: 0.41-0.55%, P: 0-0.015%, S: 0-0.015%, Al: 0.01-0.03%, Mn / S≥40, and the balance is Fe and unavoidable inclusion elements. The yield strength R of the hot-dip galvanized steel sheet of the present invention P0.2 330~380MPa, elongation after break A 80mm It is 26 to 30%, and the yield strength range in the width direction of the steel plate is less than 8MPa.
Description
technical field [0001] The invention relates to a cold-rolled hot-dip galvanized steel sheet, in particular to a hot-dip galvanized steel sheet for liquid crystal backplanes with a yield strength of 330 MPa, in particular to a hot-dip galvanized steel sheet for manufacturing 0.28-0.35mm liquid crystal display backplanes An aluminum-zinc steel sheet and a manufacturing method thereof belong to the technical field of iron-based alloys. Background technique [0002] Hot-dip galvanized steel has good atmospheric corrosion resistance and heat resistance, and has beautiful spangles on the surface. It is widely used in construction and home appliances. [0003] More and more electronic display screens in modern life and industry use liquid crystal display. The component of liquid crystal display used to support the liquid crystal screen is a liquid crystal module, which is divided into a module frame and a module backplane. Due to its excellent performance, galvanized products are...
Claims
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IPC IPC(8): C22C38/02C22C38/04C22C38/06C21D1/26C21D6/00C21D8/02C21D9/573C23C2/06C23C2/40
CPCC22C38/02C22C38/04C22C38/002C22C38/06C21D1/26C21D8/0226C21D9/573C21D6/005C21D6/008C23C2/06C23C2/40C21D2211/005C21D2211/003C21D2211/009
Inventor 丁志龙魏宝民闫秉昊
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD