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Aluminum-plated steel plate, hot forming part and manufacturing method

A manufacturing method and thermoforming technology, applied in hot dip plating process, coating, metal material coating process, etc., can solve the problem of hydrogen embrittlement risk of melt sticking rolls

Pending Publication Date: 2022-07-29
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of melting roll sticking and the risk of hydrogen embrittlement during the heat treatment process when manufacturing hot-formed parts from aluminum-coated steel sheets

Method used

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  • Aluminum-plated steel plate, hot forming part and manufacturing method
  • Aluminum-plated steel plate, hot forming part and manufacturing method
  • Aluminum-plated steel plate, hot forming part and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6 and comparative example 1-2

[0073] The aluminized steel sheets and thermoformed parts of Examples 1-6 and Comparative Examples 1-2 were manufactured by the following manufacturing methods.

[0074] (1) steelmaking to obtain a substrate whose elemental composition is shown in Table 1;

[0075] (2) rolling to obtain the rolled steel plate;

[0076] (3) continuous annealing, continuous annealing of the rolled steel sheet, and then the continuous annealed steel sheet is put into a pot (immersed in a plating solution), and the immersed steel sheet is cooled out of the pot to obtain an aluminized steel sheet, which is continuously annealed The specific process parameters of the plating are shown in Table 2.

[0077] (4) Processing the aluminized steel sheet into a billet;

[0078] (5) heat treatment of the blank;

[0079] (6) Transfer the heat-treated billet to a mold for thermoforming to obtain thermoformed parts. The specific process parameters of heat treatment and thermoforming are shown in Table 3.

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Abstract

The invention discloses an aluminized steel plate which comprises a base plate and a plating layer on the surface of the base plate, the microstructure of the plating layer comprises an Mg2Si phase and an AlMgSiFe phase, and the average grain diameter of the Mg2Si phase is 0.001-5 microns. The problems of melting roll sticking and hydrogen embrittlement risk can be relieved. The invention further provides a manufacturing method of the aluminum-plated steel sheet, a hot forming component and a manufacturing method of the hot forming component.

Description

technical field [0001] The invention relates to the field of metal-coated steel sheets, in particular to an aluminum-coated steel sheet, a thermoforming part and a manufacturing method. Background technique [0002] Due to its good heat resistance and corrosion resistance, aluminized steel sheet is widely used in various fields such as automobiles, home appliances, ovens and ovens. Due to the high temperature oxidation resistance of the aluminum coating, it can avoid oxidation and decarburization of the steel plate during the heat treatment process. Therefore, the aluminum coating is also widely used in the field of hot forming steel (especially the field of hot stamping steel), and the global demand for hot stamping steel with aluminum coating is The amount is about 2 million tons. However, hot forming of aluminum-coated steel sheets also faces some difficulties, such as aluminum melt sticking during heat treatment, and the risk of hydrogen embrittlement. [0003] Aluminu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/38C22C38/34C22C38/28C22C38/32C22C38/26C22C38/24C22C38/60C21D8/02C21D1/26C23C2/12C23C2/40B21C37/02
CPCC22C38/02C22C38/04C22C38/06C22C38/38C22C38/34C22C38/28C22C38/32C22C38/26C22C38/24C22C38/60C21D8/0226C21D8/0236C21D8/0263C21D1/26C23C2/12C23C2/40B21C37/02C21D9/46C21D8/0205C21D8/0247C21D7/13C21D1/673C21D8/0278C21D1/18B32B15/012C23C28/02C23C28/021C23C28/023C23C2/28C23C2/29C23C2/02C23C2/022C23C2/026C22C38/48C22C38/14C22C38/18C21D8/02C21D8/005C21D9/0081C22C38/002
Inventor 谭宁刘浩金鑫焱
Owner BAOSHAN IRON & STEEL CO LTD
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