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Hot-rolled steel plate for 1800mpa class hot-stamped wheel rim 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 rims and its manufacturing field, can solve the problems of unsuitable wheel rims, not meeting the manufacturing requirements of automobile wheels, etc., and achieve good surface quality and good organizational properties Uniformity and impact toughness, effect of structure refinement

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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  • Hot-rolled steel plate for 1800mpa class hot-stamped wheel rim and manufacturing method thereof
  • Hot-rolled steel plate for 1800mpa class hot-stamped wheel rim and manufacturing method thereof
  • Hot-rolled steel plate for 1800mpa class hot-stamped wheel rim 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 rim manufacturing process are shown in Table 4. The microstructure of embodiment 3 steel plate sees figure 1 , which are ferrite and pearlite; the structure of the steel plate after hot stamping is full martensite, 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 invention

[004...

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PUM

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Abstract

The invention discloses a hot-rolled steel plate for 1800MPa hot stamping wheel rims and a preparation method thereof, C: 0.33%-0.35%, Si: 0.01%-0.10%, Mn: 1.10%-1.45%, P: ≤0.010%, S: ≤0.004%, Al: 0.015%‑0.055%, Nb: 0.025‑0.040%, V: 0.02‑0.04%, Mo: 0.26‑0.35%, B: 0.002‑0.004%, rare earth element La+Ce: 0.020% ‑0.034%, 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 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 autom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/12C22C33/04C21C7/00B22D11/115B21C37/02
CPCC22C38/002C22C38/005C22C38/02C22C38/04C22C38/06C22C38/12C22C33/04C21C7/0056C21C7/0006B22D11/115B21C37/02
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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