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High-chambering hot-rolled pickled steel plate with yield strength of 550 MPa

A yield strength, hot-rolled pickling technology, applied to heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve the problems of mismatching stamping performance and hole expansion performance, and can not meet the load-carrying and formability problems, to achieve excellent stamping Performance and hole expansion performance, low alloy cost, effect of low alloy cost

Active Publication Date: 2021-05-11
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a high-reaming hot-rolled pickled steel plate with a yield strength of 550MPa and its manufacturing method, which mainly solves the problem that the stamping performance and hole-expanding performance of the existing hot-rolled pickled steel plate with a yield strength of 550MPa do not match and cannot meet the requirements. Technical issues related to the manufacturing requirements of complex-shaped auto parts with both bearing capacity and formability

Method used

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  • High-chambering hot-rolled pickled steel plate with yield strength of 550 MPa
  • High-chambering hot-rolled pickled steel plate with yield strength of 550 MPa
  • High-chambering hot-rolled pickled steel plate with yield strength of 550 MPa

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Embodiment Construction

[0047]The present invention will be further described below in conjunction with Examples 1 to 5, as shown in Tables 1 to 5, it will be understood that the following specific embodiments are intended to illustrate only the invention and are not intended to limit the scope of the invention.

[0048]Table 1 is a chemical component (by weight percent) of the embodiment of the present invention, the margin is Fe and inevitable impurities.

[0049]Table 1 The chemical composition of the steel of the present invention, unit: weight percent.

[0050]

[0051]Through the converter smelting steel water, the steel water is blown by the LF steel bag refining furnace refining process, and the steel water is blown through the whole process to obtain a continuous casting slab; the thickness of the continuous casting slab is 210 ~ 230 mm, the width is 800 ~ 1300mm, length is 5000 ~ 10000mm.

[0052]The fixed sheets produced by steelmaking are sent to the heating furnace and then heat it, and the phosphorus is rel...

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Abstract

The invention discloses a high-chambering hot-rolled pickled steel plate with yield strength of 550 MPa, and mainly solves the technical problems that the stamping performance and chambering performance of an existing hot-rolled pickled steel plate with yield strength of 550 MPa are not matched, and the manufacturing requirements of complex-shape automobile parts taking bearing performance and formability into consideration cannot be met. The high-chambering hot-rolled pickled steel plate with the yield strength of 550 MPa comprises the following chemical components including, by weight, 0.05% to 0.08% of C, 1.0% to 1.2% of Mn, 0% to 0.10% of Si, 0 to 0.020% of P, 0 to 0.003% of S, 0.02% to 0.05% of Alt, 0% to 0.005% of N, 0.01% to 0.02% of Nb, 0.04% to 0.08% of Ti and the balance Fe and inevitable impurity elements. The steel plate is used for manufacturing automobile structural parts.

Description

Technical field[0001]The present invention relates to a hot-coated steel sheet, and more particularly to a yield strength of 550 MPa, high-allerge hot-rolled steel sheet and a method of manufacturing the same, belonging to the field of iron-based alloy.Background technique[0002]Silver car structure steel is one of the hot rolled steel sheet. After the acid washing treatment, the surface quality has improved, so that the steel plate has a low cost and better size, plate-shaped precision, and a large number of automobile chassis. , Wheels and other structural parts. With the lightweight development of the car, the high-strength thinning of the passenger car is the hot spot of current research and engineering applications. However, due to the decline in structural stiffness after the material is reduced, the demand for materials is also increasingly comprehensive. . In addition, the high-intensity level structural steel is prone to anisotropy, especially for the machining of parts, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D8/02C21D9/00C22C33/04C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14
CPCC21D8/0226C21D9/0081C22C33/04C22C38/02C22C38/04C22C38/002C22C38/001C22C38/12C22C38/14C22C38/06C21D2211/005C21D2211/002
Inventor 陈维晋孙明军彭扬文段争涛申庆波刘友荣
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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