Plating solution for high corrosion resistant, high-formality and hot-forming steel, hot-forming steel plate, hot dipping production technology, hot stamping component and application

A hot-formed steel, high corrosion-resistant technology, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve problems such as cracks in the coating, improve plasticity, prevent the passage of corrosion factors, and improve the coating. The effect of formability

Active Publication Date: 2020-02-11
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Aiming at the problem that there are missing coating defects on the surface of the existing hot-formed steel containing Al-Si coating, and at the same time, the coating will produce cracks during the hot-forming and stamping process, the invention provides a high-corrosion-resistant and high-formability hot-forming steel plating solution , by optimizing the composition and content of the plating solution, reducing the thickness of the alloy layer formed by the plating solution on the substrate, and improving the uniformity of the coating structure, the grains of the obtained aluminum coating are refined, thereby improving th

Method used

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  • Plating solution for high corrosion resistant, high-formality and hot-forming steel, hot-forming steel plate, hot dipping production technology, hot stamping component and application
  • Plating solution for high corrosion resistant, high-formality and hot-forming steel, hot-forming steel plate, hot dipping production technology, hot stamping component and application
  • Plating solution for high corrosion resistant, high-formality and hot-forming steel, hot-forming steel plate, hot dipping production technology, hot stamping component and application

Examples

Experimental program
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Effect test

Embodiment 1

[0064] The production process of a high-corrosion-resistant and high-formability hot-formed steel plate in this embodiment is as follows:

[0065] (1) Substrate preparation for hot-dip plating:

[0066]The cold-rolled steel strip with a thickness of 0.5-3.0mm that has gone through the usual hot-rolling process and cold-rolling process is selected as the substrate. The main production steps of the substrate are as follows: molten iron pretreatment→converter smelting→alloy fine-tuning→refining→continuous casting→ Hot rolling → pickling and cold rolling, the main chemical components of the substrate in weight % (as shown in Table 1) are: C: 0.23%, Si: 0.15%, Mn: 1.20%, P: 0.01%, S: 0.003% , Al: 0.05%, Cr: 0.25%, Mo: 0.002%, B: 0.002%, N: ≤0.01%, Ti: 0.042%, the balance is Fe and unavoidable impurities, the substrate is reserved for hot dipping Plating process.

[0067] (2) Preparation of plating solution for hot-dip plating:

[0068] A certain amount of alloy ingots and lantha...

Embodiment 2

[0080] This embodiment uses the cold-rolled steel sheets (thickness 0.5~3.0mm) of various substrate steel components and contents of the embodiment 2 shown in the following table 1, and uses the chemical composition of the plating solution of the embodiment 2 shown in the following table 2 And content, use the hot-dip plating production main process parameter of embodiment 2 in the following table 3, carry out the hot-dip plating process of identical step with embodiment 1. Thereafter, the same hot press forming method as in Example 1 was used, except that the hot stamping process parameters were the same as those shown in Example 2 in Table 4.

Embodiment 3

[0082] This embodiment uses cold-rolled steel sheets (thickness 0.5-3.0 mm) of various substrate steel components and contents in Example 3 shown in Table 1 below, and uses the chemical composition of the plating solution in Example 3 shown in Table 2 below. And content, use the hot-dip plating production main process parameter of embodiment 3 in following table 3, carry out the hot-dip plating process of identical step with embodiment 1. Thereafter, the same hot press forming method as in Example 1 was used, except that the hot stamping process parameters were the same as those shown in Example 3 in Table 4.

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Abstract

The invention discloses plating solution for high corrosion resistant, high-formality and hot-forming steel, a hot-forming steel plate, a hot dipping production technology, a hot stamping component and application and belongs to the field of steel belt plate coating composite materials. The plating solution comprises the following components in percentage by mass: 2.0-7.5% of Si, 0.08-2.5% of Mg,0.1-2.0% of Cu, 0.08-1.0% of REM and the balance of Al and unavoidable impurities. The hot-forming steel plate comprises a base plate and a coating on the surface of the base plate; the coating comprises an alloy layer and an aluminized coating; the alloy layer covers the surface of the base plate; the thickness of the alloy layer is equal to or less than 4.5 microns; the aluminized coating is arranged on the surface of the alloy layer; the hot dipping production technology comprises the steps of cleaning of the hot-forming steel base plate, continuous annealing, hot dipping, coating thicknesscontrolling, and cooling after plating; and the hot stamping component made of the steel plate can be used for manufacturing a high corrosion-resistant automobile assembly. According to the invention, a product with higher corrosion resistance and forming property can be obtained.

Description

technical field [0001] The invention relates to a plating solution for hot-formed steel with high corrosion resistance and high formability, a hot-formed steel plate, a hot-dip plating production process, a hot-stamping part and its application, and belongs to the field of steel-strip plate-coated composite materials. Background technique [0002] In recent years, countries all over the world have increasingly stringent requirements on the safety, energy saving and emission of automobiles. High strength thinning, energy saving and emission reduction have always been the main development trend of the automobile industry. Among them, the use of hot stamping to produce ultra-high-strength auto parts with a tensile strength greater than 1500MPa is one of the most common ways to achieve high strengthening. It is a combination of austenitization, high-temperature forming and rapid cooling. To achieve high strength of the product, it is mainly used in the production of high-strengt...

Claims

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Application Information

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IPC IPC(8): C23C2/12C23C2/40C22C38/02C22C38/04C22C38/06C22C38/22C22C38/28C22C38/32C23C2/02C21D1/26C21D1/76C22C21/02
CPCC23C2/12C23C2/40C22C38/02C22C38/04C22C38/002C22C38/06C22C38/22C22C38/32C22C38/28C22C38/001C23C2/02C21D1/26C21D1/76C22C21/02
Inventor 周世龙刘永刚崔磊詹华晋家春李子涛陈乐王蕾
Owner MAANSHAN IRON & STEEL CO LTD
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