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Hot-rolled steel plate for 2000mpa class hot-stamped wheel spokes and manufacturing method thereof

A technology of hot-rolled steel plate and manufacturing method, which is applied in the field of hot-rolled steel plate for hot-stamping wheel spokes and its manufacture, can solve the problems of not meeting the manufacturing requirements of automobile wheels, not applicable to wheel spokes, etc., and achieve good structure performance uniformity and impact Toughness, good surface quality, fine structure effect

Active Publication Date: 2022-02-18
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when manufacturing wheels with traditional hot stamping steel, there are generally problems in surface quality and impact performance, which do not meet the manufacturing requirements of automobile wheels, especially not suitable for the process of producing wheel spokes that require preforming before hot stamping.

Method used

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  • Hot-rolled steel plate for 2000mpa class hot-stamped wheel spokes and manufacturing method thereof
  • Hot-rolled steel plate for 2000mpa class hot-stamped wheel spokes and manufacturing method thereof
  • Hot-rolled steel plate for 2000mpa class hot-stamped wheel spokes and manufacturing method thereof

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Embodiment Construction

[0032] Describe below in conjunction with specific embodiment:

[0033] See Table 1-3 for the specific composition, temperature regime, structure and performance of the steel plate of the five embodiments of the present invention. The mechanical properties of the steel plate after pre-deformation and hot stamping during the spoke manufacturing process are shown in Table 4. The microstructure of embodiment 5 steel plate sees figure 1 , is ferrite and pearlite, and the structure of the steel plate after hot stamping is full martensitic structure, see figure 2 .

[0034] The chemical composition (wt, %) of the embodiment of the present invention of table 1

[0035]

[0036] The temperature system of the embodiment of the invention of table 2

[0037]

[0038] The organization and mechanical performance parameter of table 3 embodiment of the present invention

[0039]

[0040] Table 4 Mechanical properties after hot stamping of the embodiments of the present inventi...

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Abstract

The invention discloses a hot-rolled steel plate for 2000MPa grade hot stamping wheel spokes and a preparation method thereof, C: 0.37%-0.40%, Si: 0.01%-0.10%, Mn: 1.56%-1.80%, P: ≤0.010%, S: ≤0.004%, Al: 0.015%‑0.055%, Nb: 0.046‑0.060%, V: 0.041‑0.060%, Mo: 0.26‑0.35%, B: 0.0041‑0.006%, rare earth element La+Ce: 0.035% ‑0.050%, N≤0.003%, the balance is Fe and unavoidable impurities.

Description

technical field [0001] The invention relates to a steel plate for automobiles, in particular to a hot-rolled steel plate for hot stamping wheel spokes with good surface quality and impact performance and a manufacturing method thereof. Background technique [0002] In recent years, in order to meet the goals of safety, environmental protection and energy saving, automobile companies have put forward requirements for vehicle lightweight and collision safety. In order to meet the development needs of the automobile industry, iron and steel enterprises have continued to develop products such as high-strength steel, advanced high-strength steel, ultra-high-strength steel, and hot-formed steel, and correspondingly developed advanced deep-processing technologies for steel plates such as hot forming, hydroforming, and spinning. This ensures that high-performance materials are widely used in body manufacturing. As an important part of automobiles, the lightweight development of aut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/12C21D8/02C22C33/04
CPCC22C38/02C22C38/04C22C38/06C22C38/12C22C38/002C22C38/005C22C38/001C22C33/04C21D8/0205C21D8/0226C21D8/0263C21D2211/008
Inventor 董毅时晓光孙成钱王俊雄韩楚菲刘仁东王进臣王洪海王鑫景鹤
Owner ANGANG STEEL CO LTD
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