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Pickled steel plate for 2000mpa grade hot stamping wheel rim and manufacturing method thereof

A technology of pickling steel plates and manufacturing methods, which is applied in the field of steel plates for automobiles, can solve problems such as unsuitable wheel rims, and does not meet the manufacturing requirements of automobile wheels, etc., achieve good surface quality, reduce band structure and inclusion levels, and improve impact performance effect

Active Publication Date: 2022-02-15
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when traditional hot stamping steel is used for wheel manufacturing, 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 that requires preforming to produce wheel rims before hot stamping.

Method used

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  • Pickled steel plate for 2000mpa grade hot stamping wheel rim and manufacturing method thereof
  • Pickled steel plate for 2000mpa grade hot stamping wheel rim and manufacturing method thereof
  • Pickled steel plate for 2000mpa grade hot stamping wheel rim and manufacturing method thereof

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Embodiment Construction

[0033] Describe below in conjunction with specific embodiment:

[0034] The specific composition, temperature regime, pickling process parameters, structure and properties of the steel plate of the five embodiments of the present invention are shown in Tables 1-4. The mechanical properties of the steel plate after pre-deformation and hot stamping during the rim manufacturing process are shown in Table 5. The microstructure of embodiment 5 steel plate sees figure 1 , which are ferrite and pearlite; the structure of the steel plate after hot stamping is full martensitic structure, see figure 2 .

[0035] The chemical composition (wt, %) of the embodiment of the present invention of table 1

[0036]

[0037] The temperature system of the embodiment of the invention of table 2

[0038]

[0039] The pickling process parameter of table 3 embodiment of the present invention

[0040]

[0041] The organization and mechanical performance parameter of table 4 embodiment of t...

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PUM

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Abstract

The invention discloses a 2000MPa grade hot stamping wheel rim pickling steel plate and a preparation method thereof, C: 0.36%-0.39%, Si: 0.01%-0.10%, Mn: 1.36%-1.60%, P: ≤0.010%, S: ≤0.004%, Al: 0.015%‑0.055%, Nb: 0.041‑0.055%, V: 0.035‑0.055%, 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 pickled steel plate for hot stamping wheel rims 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 automobi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/12C22C33/04C21C7/00B22D11/115C23G1/08B21C37/02
CPCC22C38/002C22C38/005C22C38/02C22C38/04C22C38/06C22C38/12C22C33/04C21C7/0006C21C7/0056B22D11/115C23G1/08B21C37/02C21D2211/008
Inventor 董毅时晓光孙成钱王俊雄韩楚菲刘仁东郭冠男张建军郑麟飞陈恩来
Owner ANGANG STEEL CO LTD
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