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Dual-hardness clad steel plate and production method thereof

A technology of composite steel plate and manufacturing method, which is applied in the directions of manufacturing tools, temperature control, chemical instruments and methods, etc., and can solve problems that do not involve the characteristics and comprehensive performance of steel plates.

Inactive Publication Date: 2016-04-20
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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  • Dual-hardness clad steel plate and production method thereof
  • Dual-hardness clad steel plate and production method thereof
  • Dual-hardness clad steel plate and production method thereof

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Embodiment A1-A4

[0077] The dual-hardness composite steel plate in the above-mentioned embodiment is made by the following steps:

[0078] (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;

[0079] (2) Blank assembly:

[0080] (2a) Carry out rolling blanking for high-hardness layer slabs and low-hardness layer slabs according to actual needs, and the thickness of the blanks is determined according to the thickness of the finished double-hardness composite steel plate and the thickness ratio of the high-hardness layer and the low-hardness layer;

[0081] (2b) Pre-treat the joint surface of the slab, 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 one ...

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Abstract

The invention discloses a dual-hardness clad steel plate. One surface of the steel plate is a high-hardness layer, the other surface of the steel plate is a low-hardness layer, and atom combination is achieved between the high-hardness layer and the low-hardness layer by rolling bonding, wherein Mn13 steel is adopted for the low-hardness layer, and the Brinell hardness of the high-hardness layer is greater than 600. The invention further discloses a production method of the dual-hardness clad steel plate, comprising the following steps: 1. respectively preparing a high-hardness layer slab and a low-hardness layer slab; 2. assembly: preprocessing the combined surface of the slabs, carrying out spherical welded sealing on the binding faces of the slabs, and carrying out vacuumizing treatment on a composite slab after welded sealing; 3. heating; 4. carrying out composite rolling; 5. cooling; and 6. carrying out thermal treatment, wherein the heating temperature is 1050-1100 DEG C, the heating time is 2-3min / mmx thickness, water cooling is performed on the heating slab, and the water temperature is lower than 40 DEG C. The steel plate has different hardness characteristics and good low-temperature toughness.

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 Applications(China)
IPC IPC(8): B21B1/38B21B37/74C22C38/02C22C38/04C22C38/08C22C38/18C22C38/12C22C38/16C22C38/14C21D8/02
CPCB21B1/38B21B37/74C21D8/0205C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/14C22C38/16C22C38/18C22C38/32B21B2001/386C21D2211/008C21D2211/001C21D8/0226C21D8/0247C21D8/0263C21D9/42C21D9/46C21D1/18C21D2251/02B21B2001/383B32B15/011C21D6/004C21D6/005C21D6/008C21D9/50C22C38/42C22C38/44C22C38/50C22C38/54F41H5/045B32B2307/536B32B15/00C21D9/48C21D8/0463C21D8/0447C21D8/0421C21D8/0426
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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