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A kind of three-layer composite steel plate and its manufacturing method

A manufacturing method and layer-composite technology, applied in chemical instruments and methods, layered products, metal layered products, etc., can solve problems that do not involve the characteristics and comprehensive performance of steel plates

Active Publication Date: 2017-10-31
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this Chinese patent document does not involve the product characteristics and comprehensive performance of related steel plates

Method used

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  • A kind of three-layer composite steel plate and its manufacturing method
  • A kind of three-layer composite steel plate and its manufacturing method
  • A kind of three-layer composite steel plate and its manufacturing method

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Embodiment A1-A6

[0080] The three-layer composite steel plate in the above-mentioned embodiment is prepared by the following steps:

[0081] (1) Prepare high-hardness layer slab and low-hardness layer slab respectively, and control each chemical element in high-hardness layer slab and low-hardness layer slab respectively as shown in Table 1;

[0082] (2) Blank assembly:

[0083] (2a) Carry out rolling blanking for the high-hardness layer slab and the low-hardness layer slab according to actual needs, and the thickness of the blank is determined according to the thickness of the finished three-layer composite steel plate and the thickness ratio of the high-hardness layer and the low-hardness layer;

[0084] (2b) Pre-treat the joint surface of the slabs, use a milling machine or a planer to process the joint surfaces of the high-hardness layer slab and the low-hardness layer slab respectively, remove defects such as iron oxide scale or slag inclusions on the surface of the slab, and then After ...

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Abstract

The invention discloses a three-layer composite steel plate. The three-layer composite steel plate is provided with a low-hardness layer serving as a middle base layer and a high-hardness layer serving as a surface layer; and the high-hardness layer and the low-hardness layer achieve atom combination through roll cladding, wherein the low-hardness layer is Mn13 steel, the Brinell hardness of the high-hardness layer is larger than 600, and the Brinell hardness of the low-hardness layer is lower than 250. The invention further discloses a manufacturing method for the three-layer composite steel plate. The manufacturing method comprises the steps that (1), a high-hardness layer slab and a low-hardness layer slab are prepared; (2), assembling is carried out, wherein the slab combination face is pretreated, the slab binding face is subject to peripheral welding seal, and the composite slab obtained after welding seal is subject to vacuumizing treatment; (3), heating is carried out; (4), composite rolling is carried out; (5), cooling is carried out; and (6), heat treatment is carried out, wherein the heating temperature of heat treatment ranges from 1050 DEG C to 1100 DEG C, the heating time ranges from 2 min / mm*slab thickness to 3 min / mm*slab thickness, the heated composite plate is subject to water cooling, and the water temperature is smaller than 40 DEG C; and the composite steel plate has the different hardness characteristics.

Description

technical field [0001] The invention relates to a steel plate and a manufacturing method thereof, in particular to a composite steel plate and a manufacturing method thereof. Background technique [0002] Generally speaking, the increase of steel plate thickness and hardness level is conducive to improving the protection ability of armored vehicles. However, the increase in the thickness of the steel plate is not conducive to the weight reduction of the vehicle and affects the tactical mobility of the vehicle. At the same time, when the hardness of the steel plate exceeds a certain range, it will collapse when it comes into contact with bullets or shells, and these fragments will directly endanger personal safety and the normal operation of instruments and equipment. [0003] The announcement number is CN202750372U, and the publication date is February 20, 2013. The Chinese patent document titled "A Novel Bulletproof Cabinet" discloses a cabinet body with bulletproof functi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/08C22C38/18C22C38/12C22C38/16C22C38/14B32B15/01B32B15/18C21D8/02
CPCB32B15/011C21D8/0205C22C38/002C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/14C22C38/16C22C38/18
Inventor 赵小婷闫博姚连登焦四海李红斌
Owner BAOSHAN IRON & STEEL CO LTD
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