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Composite board and preparation method thereof

A composite plate and composite slab technology, applied in chemical instruments and methods, metal rolling, manufacturing tools, etc., can solve the problems of weakening the corrosion resistance of stainless steel clad layers, large thickness of carbon diffusion layer, and fluctuation of interface thickness, etc., to achieve The effect of small deformation, small interface fluctuation, and reduced deformation resistance

Active Publication Date: 2020-08-21
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, high-temperature hot rolling will also cause fluctuations in the thickness of the interface, and the thickness of the carbon diffusion layer will be relatively large, which will easily weaken the corrosion resistance of the stainless steel clad layer.
The cold-rolled clad plate can greatly reduce the disadvantages of the above-mentioned hot-rolled clad plate, but the biggest problem of cold rolling is that the first pass requires a huge amount of deformation, usually exceeding 50%, and the rolling energy consumption is large and for Too much load for rolling mill, poor operability

Method used

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  • Composite board and preparation method thereof
  • Composite board and preparation method thereof
  • Composite board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085]In this embodiment, a kind of preparation method of composite plate, referring to the attached Figure 2-A to attach Figure 2-E As shown, the details are as follows:

[0086] 1) First, clean the surfaces of the austenitic stainless steel (i.e. stacking layer 1) and the carbon steel billet plate (i.e. interlayer 2) to ensure that the surface of the steel plate is smooth and free of impurities such as oxide layer and oil stains.

[0087] 2) Stack the clad stainless steel plates and carbon steel substrates that have undergone surface cleaning in accordance with the stacking order shown in Figure 2 (the thickness of each layer is 2.4 mm austenitic stainless steel + 1.7 mm manganese boron steel + 2.4 mm mm austenitic stainless steel), with as clean edges as possible. Specifically, from top to bottom, the composite plate is austenitic stainless steel with a thickness of 2.4mm, manganese boron steel with a thickness of 1.7mm, and austenitic stainless steel with a thickness o...

Embodiment 2

[0094] In this embodiment, the preparation method of the composite board, refer to the attached Figure 2-A to attach Figure 2-E Shown below:

[0095] 1) First, clean the surfaces of the austenitic stainless steel (i.e. stacking layer 1) and the carbon steel billet plate (i.e. interlayer 2) to ensure that the surface of the steel plate is smooth and free of impurities such as oxide layer and oil stains.

[0096] 2) Stack the clad stainless steel plates and carbon steel substrates that have undergone surface cleaning in accordance with the stacking order shown in Figure 2 (the thickness of each layer is 2.4 mm austenitic stainless steel + 1.7 mm manganese boron steel + 2.4 mm mm austenitic stainless steel), with as clean edges as possible.

[0097] In this embodiment, the structure of the composite plate from top to bottom is: austenitic stainless steel with a thickness of 2.4 mm. Manganese-boron steel with a thickness of 1.7mm and austenitic stainless steel with a thicknes...

Embodiment 3

[0104] In this example, refer to the attached Figure 2-A to attach Figure 2-E As shown, the preparation method of the composite board is as follows:

[0105] 1) First, clean the surfaces of the austenitic stainless steel (i.e. stacking layer 1) and the carbon steel billet plate (i.e. interlayer 2) to ensure that the surface of the steel plate is smooth and free of impurities such as oxide layer and oil stains.

[0106] 2) Stack the clad stainless steel plates and carbon steel substrates that have undergone surface cleaning in accordance with the stacking order shown in Fig. mm austenitic stainless steel), with as clean edges as possible.

[0107] The clad plates in this embodiment are, from top to bottom: austenitic stainless steel with a thickness of 1.7mm, manganese-boron steel with a thickness of 1.7mm, and austenitic stainless steel with a thickness of 1.7mm.

[0108] 3) Use electron beam welding or other suitable welding methods to weld along the edges of the neatly ...

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Abstract

The invention discloses a composite board and a preparation method thereof. The composite board comprises a middle interlayer which is a Mn-B steel base layer, and at least two stacking layers which are arranged on the upper side and the lower side of the middle interlayer respectively. The stacking layers are metal layers with paramagnetism. When the composite board is formed, the two stacking layers are arranged on the upper side and the lower side of the middle interlayer respectively, and after the two stacking layers are attached along the edge of the joint of the stacking layers and themiddle interlayer, the stacked composite board is formed through edge sealing connection. Mn-B steel is used as matrix metal to replace conventional Q235 or Q345 and other common carbon steel materials, and due to the fact that the element B is added, the matrix metal (carbon steel) has excellent hardenability, and higher strength can be easily obtained through subsequent quenching and other heattreatment methods. Through reasonable thickness matching of two different materials and optimization of a rolling-heat treatment process system, preparation of the high-strength and high-plasticity composite board is achieved.

Description

technical field [0001] The invention belongs to the technical field of materials and preparation thereof, and in particular relates to a composite board and a preparation method thereof. Background technique [0002] Austenitic stainless steel clad plate is widely used in petroleum, chemical industry, seawater desalination, salt production, nuclear industry, food industry, water conservancy facilities construction and other industries at home and abroad due to the advantages of both stainless steel and base material. Compared with stainless steel, the amount of stainless steel is significantly reduced, which can not only save 40% to 50% of the cost, but also save a lot of alloying elements such as nickel. [0003] However, at present, for the base material selection of the above-mentioned stainless steel clad plates, conventional ordinary carbon steels such as Q235 and Q345 are generally used, and the main reason is that this type of steel has a relatively low cost. Few pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01B32B15/18B21B1/38B21B47/00
CPCB32B15/01B32B15/18B21B1/38B21B47/00B21B2001/386
Inventor 姚圣杰陈龙
Owner HARBIN INST OF TECH AT WEIHAI
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