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Stainless steel-carbon steel composite plate hot continuous rolling large-scale preparing method

A composite plate and stainless steel technology, which is applied in the field of large-scale preparation of stainless steel-carbon steel composite plate hot rolling, can solve the problems of high energy consumption, affecting the effect of vacuuming, and poor plate shape, so as to reduce the impurity content and ensure the quality , the effect of preventing oxidation

Active Publication Date: 2019-01-04
山东盛阳金属科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing production methods of stainless steel-carbon steel clad plate generally include explosive clad method, brazing clad method and rolling clad method. The shear strength of clad plate clad interface produced by brazing clad method is generally below 300MPa, which is difficult to meet the production needs. ; Explosive composite method is only suitable for small batch production, low efficiency for large-scale production, and poor plate shape, large energy consumption, high safety hazards, low yield; Generally, it is necessary to use a release agent or a barrier agent, which will inevitably increase the gap in the composite interface of the composite billet. The release agent or barrier agent will divide the composite interface into several cavities of uneven size, which will affect the effect of vacuuming and remain in the cavity. Oxygen will cause the composite interface to oxidize, and ultimately affect the quality of the composite board

Method used

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  • Stainless steel-carbon steel composite plate hot continuous rolling large-scale preparing method
  • Stainless steel-carbon steel composite plate hot continuous rolling large-scale preparing method
  • Stainless steel-carbon steel composite plate hot continuous rolling large-scale preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A large-scale production method of stainless steel-carbon steel composite plate hot rolling, including a base plate 51 and a cover plate 52, the base plate 51 is Q345 low-carbon steel, and the cover plate 52 is 304 stainless steel, wherein the size of the cover plate 52 is 10000mm× 1250mm×20mm, the size of the substrate 51 is 10000mm×1250mm×180mm, and its preparation method includes the following steps:

[0058] 1) Substrate and cladding surface treatment

[0059] Grinding and polishing of the surface of the substrate 51: remove the oxide skin on the processed surface of the substrate 51 to produce a metallic luster, and eliminate defects such as cracks, deep pits, and burrs. The angle grinder cleans the oil on the surface of the substrate 51;

[0060] Surface polishing of the cladding plate 52: use a polishing sheet to polish the surface of the cladding plate 52, clean the dust on the surface of the cladding plate 52, and then turn the plate to polish the other side o...

Embodiment 2

[0092] The difference from Example 1 is: the thickness of the base plate is 175mm, the thickness of the cladding plate is 25mm, the total reduction rate is 77.5%, the specification of the composite plate after rolling is 44000mm×1250mm×45mm, and the composite plate after forming is sheared The strength is 526MPa;

Embodiment 3

[0094] The difference from Example 1 is: the thickness of the base plate is 170mm, the thickness of the cladding plate is 30mm, the total reduction rate is 77.5%, the specification of the composite plate after rolling is 44000mm×1250mm×45mm, and the composite plate after forming is sheared The strength is 525MPa;

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Abstract

The invention discloses a stainless steel-carbon steel composite plate hot continuous rolling large-scale preparing method. A base plate and a doubling plate are included. The base plate is carbon steel, the doubling plate is stainless steel, and the thickness ratio of the doubling plate to the base plate is 10%-30%. The stainless steel-carbon steel composite plate preparing method comprises the first step of base plate and doubling plate surface treatment, the second step of composite blank assembling, the third step of welding, the fourth step of purging, the fifth step of composite blank vacuum pumping, the sixth step of heating, the seventh step of rolling, the eighth step of dephosphorization and the ninth step of acid pickling. By means of the stainless steel-carbon steel composite plate hot continuous rolling large-scale preparing method, the large-scale production of stainless steel-carbon steel composite plates is achieved, the shearing strength of the formed stainless steel-carbon steel composite plates reaches up to 480-530 MPa, usage of an isolation agent or an obstruction agent is avoided, accordingly, oxidization of a composite interface is prevented, and the qualityof the composite plates is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of composite plate preparation, in particular to a large-scale preparation method of stainless steel-carbon steel composite plate hot rolling rolling. Background technique [0002] The stainless steel clad plate is a double-metal clad steel plate made of carbon steel or alloy steel as the base layer, stainless steel as the cladding layer, and rolling; the stainless steel clad plate generally uses the base layer to ensure its strength, and the clad layer to ensure its durability. Corrosion performance and wear resistance, it not only has the excellent properties of stainless steel, such as beauty, durability, formability, corrosion resistance, wear resistance, etc., but also has the advantages of high strength and low cost of carbon steel; [0003] The existing production methods of stainless steel-carbon steel clad plate generally include explosive clad method, brazing clad method and rolling clad method. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 徐明华邹永旭
Owner 山东盛阳金属科技股份有限公司
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