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Method for preparing carbon steel-stainless steel composite board for lining plate in micro-oxidizing atmosphere

A composite plate and stainless steel technology, applied in metal rolling and other directions, can solve the problems of high production cost, high production cost of carbon steel and stainless steel, and high degree of danger, achieve good mechanical properties and corrosion resistance, control hardness and strength, The effect of improving processability

Pending Publication Date: 2022-04-05
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the explosive composite method used in the application with application number 2009103040758 is to use the ultra-high temperature, ultra-high pressure and ultra-high-speed impact generated by the explosion of explosives to realize two metal composite methods with very different melting points. Because the process time is short and violent, No intermetallic compounds will be formed, but this method has low yield, high energy consumption, environmental pollution and high risk
In the application of application number 201110029651X, the rolling composite method is used to heat the carbon steel plate and the stainless steel plate above the recrystallization temperature for rolling. At the same time, it is necessary to vacuumize the space between the carbon steel plate and the stainless steel plate or pass in a protective gas to prevent the substrate from Oxidation occurs between the substrate and the cladding plate. This method is simple and less polluting, but the production cost is high
[0005] In the process of preparing carbon steel and stainless steel clad plates for liners, the production of carbon steel and stainless steel clad plates by the explosive cladding method is dangerous, seriously polluted, and the yield is low; the gap between the base plate and the cladding plate needs to be evacuated in the rolling clad process Or pass through other protective gas, and then put it into the atmosphere protection furnace for heating to prevent oxidation reaction between the substrate and the cladding plate
The former has low efficiency in producing carbon steel and stainless steel composite panels; the latter produces carbon steel and stainless steel with high production costs, both of which are not conducive to the production and development of enterprises

Method used

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  • Method for preparing carbon steel-stainless steel composite board for lining plate in micro-oxidizing atmosphere
  • Method for preparing carbon steel-stainless steel composite board for lining plate in micro-oxidizing atmosphere
  • Method for preparing carbon steel-stainless steel composite board for lining plate in micro-oxidizing atmosphere

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Experimental program
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Effect test

Embodiment 1

[0036] A method for preparing carbon steel-stainless steel composite plates for liners in a slightly oxidizing atmosphere of the present embodiment includes:

[0037] S1. Blank assembly of carbon steel base plate 1 and stainless steel cladding plate 4: the front end of carbon steel base plate 1 along the rolling direction is processed into a slope 2, and a groove 3 is opened on the rear end surface along the rolling direction, and corresponding to the groove 3 Process the stainless steel cladding plate 4, insert the stainless steel cladding plate 4 into the groove 3; weld along the outside of the contact surface between the two;

[0038] Specifically, such as figure 1 and figure 2 As shown, the front section of the carbon steel substrate 1 is provided with a slope 2, and the upper surface of the rear end is provided with a groove 3 matching with the stainless steel cladding plate 4. The carbon steel substrate 1 is made of Q235 material, and the specification is 1500mm long ×...

Embodiment 2

[0043] A method for preparing carbon steel-stainless steel composite plates for liners in a micro-oxidizing atmosphere in this embodiment is basically the same as in Embodiment 1. More specifically, the material of carbon steel substrate 1 in this embodiment is Q345, with a length of 1000mm×width 600mm× The thickness is 300mm, the slope α of slope 2 is 45°, and the length l is 70mm; the specification of groove 3 is length 920mm×width 590mm×depth 30mm, the size tolerance is -0.03mm, and the width of the groove ends on both sides is 5mm; stainless steel cladding plate 4 Using 316L material, the specification is 920mm×width 580mm×thickness 30mm, the size tolerance is +0.03mm,

[0044] The surface roughness of the texturized surface in S1 is Ra1.0; dry the surface of the contact surface with cold air, and the temperature of the hair dryer is 5°C;

[0045] In S2, put the welded combined slab into an atmosphere protection furnace filled with high-purity nitrogen and heat it to 1250°...

Embodiment 3

[0048] A method for preparing carbon steel-stainless steel composite plates for liners in a micro-oxidizing atmosphere in this embodiment is basically the same as in Embodiment 1. More specifically, the material of carbon steel substrate 1 in this embodiment is Q345, with a length of 800mm×width 500mm× The thickness is 100mm, the slope α of the slope 2 is 30°, and the length l is 40mm; the specification of the groove 3 is 720mm long×484mm wide×20mm deep, the size tolerance is -0.03mm, and the width of the groove ends on both sides is 10mm; the stainless steel cladding plate 4 Using 316L material, the specification is 720mm×width 484mm×thickness 20mm, the size tolerance is +0.03mm,

[0049] The surface roughness of the texturized surface in S1 is Ra0.8; dry the surface of the contact surface with cold air, and the temperature of the hair dryer is 2°C;

[0050] In S2, put the welded combined slab into an atmosphere protection furnace filled with high-purity nitrogen and heat it ...

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Abstract

The invention discloses a method for preparing a carbon steel-stainless steel composite plate for a lining plate in a micro-oxidizing atmosphere, and belongs to the field of metal material composite plates. The method comprises the steps that S1, a carbon steel base plate and a stainless steel covering plate are assembled; s2, rolling is conducted, specifically, the welded composite plate blank is put into an atmosphere protection furnace to be heated and subjected to heat preservation; after discharging, the plate blank is hot-rolled to the thickness of a finished product, and temperature compensation rolling is carried out in the middle pass assisted by induction heating; and S3, tempering treatment is conducted, specifically, plasma cutting is conducted on the rolled plate blank, and the plate blank is put into a tempering furnace to be subjected to tempering treatment. The base plate and the covering plate are combined in an embedded mode, the contact face is more stable than simple superposition of a traditional carbon steel and stainless steel composite plate preparation method, and after rolling, the obtained product interface structure is more uniform; and compared with a traditional rolling composite method, the working step of vacuumizing or introducing other protective gases on the contact surface of the combined plate blank is reduced, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of metal material composite plates, and more specifically relates to a method for preparing carbon steel-stainless steel composite plates for lining plates in a micro-oxidizing atmosphere. Background technique [0002] The liner is generally used to protect the workpiece from the direct impact and friction of external debris, so the material used to make the liner needs to have good impact resistance and wear resistance. Common liner materials are generally high manganese steel and high chromium steel, because these two materials are hard and wear-resistant. With the advancement of science and technology, the application of linings is becoming more and more extensive. Not only the shape of the lining itself needs to be similar to the shape of the workpiece, but also the working environment of the lining is uncertain, so the lining needs good processing performance and corrosion resistance. High manganese st...

Claims

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Application Information

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IPC IPC(8): B21B1/38
Inventor 宋孟陈旭阳张明亚黄贞益梁倩
Owner ANHUI UNIVERSITY OF TECHNOLOGY