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Zinc-aluminum-magnesium-plated steel plate, manufacturing method thereof, thermoforming method and component

A coated steel plate, zinc-aluminum-magnesium technology, applied in the direction of coating, hot-dip coating process, metal material coating process, etc., can solve the problems of liquid phase metal coating corrosion, easy evaporation, affecting the process, etc., to achieve good toughness, durability Strong corrosion resistance and high strength effect

Pending Publication Date: 2019-01-01
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to protect the steel plate, the commonly used method is to coat the surface of the steel plate with a layer of protective metal coating. The commonly used ones are galvanized and aluminum-plated, but there are some problems. Galvanizing is prone to corrosion of the steel plate by the liquid metal coating, and Easy to evaporate; aluminum plating will form a layer of hard iron-aluminum compound on the surface of the steel plate, which will affect the subsequent process, and there is also the problem of liquid aluminum sticking to the roller during heating, and the edges, punching parts, and welding parts of the parts have no protection

Method used

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  • Zinc-aluminum-magnesium-plated steel plate, manufacturing method thereof, thermoforming method and component
  • Zinc-aluminum-magnesium-plated steel plate, manufacturing method thereof, thermoforming method and component
  • Zinc-aluminum-magnesium-plated steel plate, manufacturing method thereof, thermoforming method and component

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Embodiment Construction

[0029] Describe below in conjunction with specific embodiment:

[0030] The embodiment sees attached table 1, 2, 3.

[0031] The strength of the steel plate is greater than 1500MPa, and the elongation is greater than 5%. The coating is completely transformed into an iron alloy layer, without coating evaporation, liquid phase erosion, and hard Fe-Al intermetallic compounds. The structure of the component is martensite + ferrite + retained austenite.

[0032] Attached table 1: the chemical element composition of embodiment coating

[0033]

Al

Mg

Ti

Si

mn

Sb

Ca

Cu

sn

Re

Zn

1

1.5

1.0

0.2

0.10

margin

2

1.6

1.6

0.10

margin

3

2.0

1.5

1.0

margin

4

3.0

1.5

0.08

0.05

0.30

margin

5

4.0

1.8

0.20

0.20

margin ...

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Abstract

The invention discloses a zinc-aluminum-magnesium-plated steel plate, a manufacturing method thereof, a thermoforming method and a component. The zinc-aluminum-magnesium-plated steel plate has strongcorrosion resistance of coating. After hot stamping, a coating is completely transformed into an iron alloy layer, no evaporation of coating evaporation phenomenon and no liquid-phase erosion phenomenon is generated, no hard Fe-Al intermetallic compound is generated, the steel plate has high strength and good toughness, the strength of the steel plate is more than 1500 MPa, and the elongation is more than 5%.

Description

technical field [0001] The invention relates to a coated steel plate, in particular to a zinc-aluminum-magnesium coated steel plate, a manufacturing method, a thermoforming method and components thereof. Background technique [0002] For a long time, steel has been the basis of the automobile industry. Although the amount of aluminum alloy, magnesium alloy, plastic and composite materials in automobile manufacturing has been increasing, high-strength steel has high potential for weight reduction, high impact absorption energy, and high fatigue. The advantages of strength, high formability and low planar anisotropy have become the main lightweight materials for the automotive industry. The automobile industry in the 21st century to reduce fuel consumption and reduce CO 2 And exhaust emissions have become the main needs of the society. In order to adapt to this development trend, the steel industry has developed many types of high-strength steel plates such as DP, TRIP, CP, a...

Claims

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Application Information

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IPC IPC(8): C23C2/06C23C2/40C21D8/02C22C18/04C22C38/04C22C38/02C22C38/60C22C38/06C22C38/14C22C38/32C22C38/16C22C38/18C22C38/20C22C38/22C22C38/26C22C38/08C22C38/34C22C38/40C22C38/42C22C38/44C22C38/48C22C38/54C22C38/58
CPCC21D8/0226C21D2211/001C21D2211/005C21D2211/008C22C18/04C22C38/02C22C38/04C22C38/06C22C38/08C22C38/14C22C38/16C22C38/18C22C38/20C22C38/22C22C38/26C22C38/32C22C38/34C22C38/40C22C38/42C22C38/44C22C38/48C22C38/54C22C38/58C22C38/60C23C2/06C23C2/40
Inventor 吕家舜杨洪刚周芳王永明徐承明刘仁东李锋
Owner ANGANG STEEL CO LTD
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