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High-temperature-oxidation-resistant cold-rolled steel sheet for hot forming and production and manufacturing method thereof

A high-temperature oxidation-resistant, manufacturing method technology, applied in temperature control, metal rolling, etc., can solve the problem of high cost of parts

Pending Publication Date: 2022-01-11
MAANSHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a high temperature oxidation resistant steel plate suitable for hot forming and its production and manufacturing method. Aiming at the problems of surface oxidation of traditional uncoated hot formed steel and high cost of coated hot formed steel parts, a kind of high temperature oxidation resistant steel plate is developed. Hot formed high temperature oxidation resistant steel plate

Method used

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  • High-temperature-oxidation-resistant cold-rolled steel sheet for hot forming and production and manufacturing method thereof
  • High-temperature-oxidation-resistant cold-rolled steel sheet for hot forming and production and manufacturing method thereof
  • High-temperature-oxidation-resistant cold-rolled steel sheet for hot forming and production and manufacturing method thereof

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Embodiment 1- Embodiment 3

[0042] A high-temperature oxidation-resistant steel sheet suitable for hot forming, including the following components in mass percentage: as shown in Table 1, the balance not shown in Table 1 is Fe and unavoidable impurities.

[0043] Example 1-Example 3 The manufacturing method of high temperature oxidation resistant steel plate suitable for hot forming, including the following process flow: smelting → continuous casting → hot rolling → EPS surface treatment → pickling → cold rolling → bell annealing → leveling → finished product. The specific process control is as follows:

[0044] 1) Steelmaking and continuous casting: suitable for smelting in converters, electric furnaces and induction furnaces. Continuous casting is used to produce slabs. Electromagnetic stirring and dynamic light reduction devices are used in the pouring process to reduce the risk of center loosening and tissue segregation;

[0045] 2) The billet is heated at a temperature of 1150-1200°C, held for 2-3 ...

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Abstract

The invention provides a high-temperature-oxidation-resistant cold-rolled steel sheet for hot forming and a production and manufacturing method thereof. The high-temperature-oxidation-resistant cold-rolled steel sheet comprises the following components: 0.18-0.25% of C, 0.6-1.8% of Si, 1.5-2.5% of Cr, 0.5-1.5% of Mn, 0.04-0.10% of Nb + V + Ti, less than or equal to 0.04% of Ti, 0.04-0.06% of Al, less than or equal to 0.02% of P, less than or equal to 0.01% of S and the balance of Fe. Compared with the prior art, a thin and compact oxide layer with the thickness not exceeding 2 microns is rapidly formed on the surface of the steel plate after the steel plate is taken out of a heating furnace in the hot forming process, the oxide layer is compact in structure and good in adhesion, shot blasting treatment can be omitted after the steel plate is stamped into a part, the size precision of the part is improved, environment friendliness is achieved, and the cost advantage is obvious.

Description

technical field [0001] The invention belongs to the technical field of metal material processing, and in particular relates to a high-temperature oxidation-resistant steel plate suitable for hot forming and a production method thereof. Background technique [0002] Energy saving, environmental protection and safety are the three major challenges facing the development of the automobile industry today. The implementation of lightweight vehicles can reduce the weight of the vehicle body and reduce energy consumption without sacrificing safety performance. At the same time, the light weight will also improve vehicle handling stability and collision safety to a certain extent. In the selection of lightweight materials for automobiles, the application of high-strength steel is one of the main ways. However, as the strength of steel used in automobiles becomes higher and higher, especially the use of ultra-high-strength steel plates, the production of auto parts has brought more...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/04C21D8/02C21D1/26B21B1/46C23G1/08C23G1/04C21D1/84B21B37/74B24C1/08
CPCC22C33/04C21D8/0205C21D8/0226C21D8/0236C21D8/0247C21D1/26B21B1/463C21D8/0278C23G1/08C23G1/04C21D1/84B21B37/74C21D8/0242B24C1/086C21D2211/008
Inventor 肖洋洋崔磊单梅晋家春刘永刚邓宗吉许允超陈壮
Owner MAANSHAN IRON & STEEL CO LTD
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