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2,000 MPa-grade acid pickling steel plate for hot stamping wheel rim and manufacturing method of acid pickling steel plate

A technology of pickling steel plates and hot stamping, applied in the field of steel plates for automobiles, can solve the problems of unsuitable wheel rims, not meeting the manufacturing requirements of automobile wheels, etc., and achieves good surface quality, reduced band structure and inclusion grade, and good quenching. The effect of permeability

Active Publication Date: 2021-01-26
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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  • 2,000 MPa-grade acid pickling steel plate for hot stamping wheel rim and manufacturing method of acid pickling steel plate
  • 2,000 MPa-grade acid pickling steel plate for hot stamping wheel rim and manufacturing method of acid pickling steel plate
  • 2,000 MPa-grade acid pickling steel plate for hot stamping wheel rim and manufacturing method of acid pickling steel plate

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Effect test

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 the embodiment of the present invention of table 3

[0040]

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

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Abstract

The invention discloses a 2,000 MPa-grade acid pickling steel plate for a hot stamping wheel rim and a manufacturing method of the acid pickling steel plate. The 2,000 MPa-grade pickled steel plate comprises 0.36%-0.39% of C, 0.01%-0.10% of Si, 1.36%-1.60% of Mn, less than or equal to 0.010% of P, less than or equal to 0.004% of S, 0.015%-0.055% of Al, 0.041%-0.055% of Nb, 0.035%-0.055% of V, 0.26%-0.35% of Mo, 0.0041%-0.006% of B, 0.035%-0.050% of rare earth elements La and Ce, equal to or less than 0.003% of N and the balance of 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 Applications(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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