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Steel plate for shield and preparation method thereof

A technology for steel plates and shields, which is applied in the field of steel plates for shields and its preparation, and can solve problems such as inapplicability to the production of shields

Active Publication Date: 2017-12-26
SHOUGANG CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a steel plate for shields and a preparation method thereof, which solves or partially solves the technical problem that the steel plates in the prior art are not suitable for producing shields

Method used

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  • Steel plate for shield and preparation method thereof
  • Steel plate for shield and preparation method thereof
  • Steel plate for shield and preparation method thereof

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preparation example Construction

[0030] Another aspect of the present invention provides a preparation method for producing the above-mentioned shield steel plate, comprising the following steps:

[0031] Step 1, the molten iron is smelted in a converter or an electric furnace, LF refined or RH refined to obtain molten steel with the composition described in claim 1, and then continuously cast to obtain a slab.

[0032] Step 2, reheating the billet in a heating furnace, and then rough rolling and finish rolling to obtain a hot-rolled plate.

[0033] In step 3, the hot-rolled sheet is subjected to laminar flow cooling, and then rolled into a coil to obtain a steel coil.

[0034] In step 4, the steel coil is slowly cooled, and then subjected to continuous heat treatment to obtain a finished product.

[0035] Among them, the specific process parameters are controlled as follows:

[0036] The slab is heated to 1220-1300°C in the heating furnace, and the heating time is more than 210 minutes. The purpose of usin...

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Abstract

The invention discloses a steel plate for a shield and a preparation method thereof and belongs to the technical field of steel plate production. The steel plate comprises the chemical components of, by weight, 0.35-0.43% of C, 0.20-0.40% of Si, 1.2-1.5% of Mn, 0.02-0.04% of Ti, 0.01-0.06% of Al, 0-0.4% of Ni, 0-0.5% of Cr, 0.01% of P or the less, 0.004% of S or the less, 0.008% of N or the less, 0.0010-0.0030% of B and the balance Fe and inevitable impurities. According to the steel plate for the shield and the preparation method thereof, the strength grade of the steel plate reaches 1500 MPa, good cold forming performance and excellent bulletproof performance are achieved, and the steel plate and the preparation method thereof are suitable for production of the shield.

Description

technical field [0001] The invention relates to the technical field of steel plate production, in particular to a steel plate for a shield and a preparation method thereof. Background technique [0002] A shield is a defensive weapon used to cover the body and resist the enemy's weapons such as blades and arrows in ancient battles. It is rectangular or circular, with different sizes, and the center of the shield protrudes outward. , shaped like a turtle's back, with several laces on the inside, which are called "handles" for grasping when in use. And now, shields also play a very important role. In the security fields such as riot prevention and bulletproof, shields still have a great role. However, the cold forming performance of steel plates in the prior art is poor, and they are easy to crack when bent. With cold bending, the steel sheets of the prior art are not suitable for the production of shields. Contents of the invention [0003] The invention provides a steel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/54C22C38/50C22C38/06C22C38/02C22C38/04C22C33/04B21C37/02C21D8/02
Inventor 潘辉崔阳章军黄爱建姚志强杨孝鹤李晓林徐海卫郭佳金钊黄学启
Owner SHOUGANG CORPORATION
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