Hot-dipped aluminum-zinc steel plate for liquid crystal back plate and with yield strength of 330 MPa
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 low strength and distortion, achieve low composition characteristics, improve uniformity, and be easy to implement Effect
Active Publication Date: 2021-11-30
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] Yield strength R of embodiment 4 steel plate P0.2 It is 363MPa, the tensile strength is 409MPa, and the elongation after breaking is A 80mm The yield strength in the width direction of the steel plate 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 hot-dip galvanized steel plate for thin-scale liquid crystal modules. manufacture.
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Abstract
The invention discloses a hot-dipped aluminum-zinc steel plate for a liquid crystal back plate and with the yield strength of 330 MPa. The technical problems that in the prior art, a hot-dipped aluminum-zinc steel plate for a 0.28-0.35mm liquid crystal back plate is low in strength and is distorted after being machined and formed are mainly solved. According to the hot-dipped aluminum-zinc steel plate for the liquid crystal back plate and with the yield strength of 330 MPa, chemical components of a substrate comprise, by weight percent, 0.09%-0.11% of C, 0-0.03% of Si, 0.41%-0.55% of Mn, 0-0.015% of P, 0-0.015% of S, 0.01%-0.03% of Al, not smaller than 40 of Mn / S and the balance of Fe and inevitable inclusion elements. The yield strength RP0.2 of the hot-dipped aluminum-zinc steel plate is 330-380 MPa, the percentage elongation after fracture A80mm is 26%-30%, and the yield strength range in the width direction of the steel plate is smaller than 8 MPa.
Description
technical field [0001] The invention relates to a cold-rolled hot-dip galvalume steel sheet, in particular to a hot-dip galvanized steel sheet for a liquid crystal backboard with a yield strength of 330 MPa, in particular to a hot-dip galvanized steel sheet for manufacturing a 0.28-0.35mm liquid crystal display backboard An aluminum-zinc steel plate and a manufacturing method thereof belong to the technical field of iron-based alloys. Background technique [0002] Hot-dip galvanized steel sheet has good atmospheric corrosion resistance and heat resistance, and has beautiful spangles on the surface, and is widely used in construction and home appliances. [0003] In modern life and industry, more and more electronic display screens are displayed in the form of liquid crystal. The components used to support the liquid crystal screen of the liquid crystal display are liquid crystal modules, which are divided into module frames and module backplanes. Due to its excellent perfor...
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