CN113399457A - Hot rolling process method for duplex stainless steel-carbon steel composite plate - Google Patents
Hot rolling process method for duplex stainless steel-carbon steel composite plate Download PDFInfo
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- CN113399457A CN113399457A CN202110505266.1A CN202110505266A CN113399457A CN 113399457 A CN113399457 A CN 113399457A CN 202110505266 A CN202110505266 A CN 202110505266A CN 113399457 A CN113399457 A CN 113399457A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
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Abstract
The invention provides a hot rolling process method of a duplex stainless steel-carbon steel composite plate. The method comprises the following steps: carrying out symmetrical vacuum assembly on the duplex stainless steel and the carbon steel plate; heating the symmetrical vacuum assembly of the duplex stainless steel-carbon steel to obtain a heated assembly; controlling hot rolling to the assembly in the heating state to obtain a hot-rolled dual-phase stainless steel-carbon steel composite plate; and (3) performing controlled cooling on the hot-rolled duplex stainless steel-carbon steel to obtain the duplex stainless steel-carbon steel composite plate with the interface shear strength higher than a set value. Compared with the requirement that the shearing strength is more than or equal to 210MPa in GB/T8165-2008 stainless steel composite plate and steel strip, the process treatment method of the duplex stainless steel-carbon steel composite plate provided by the embodiment of the invention can improve the interface shearing strength by nearly 2 times, thereby realizing the preparation of the duplex stainless steel-carbon steel composite plate with excellent performance.
Description
Technical Field
The invention relates to the technical field of composite plate preparation processes, in particular to a hot rolling process method for a duplex stainless steel-carbon steel composite plate.
Background
The low-cost stainless steel/carbon steel composite board has good corrosion resistance, mechanical property and processing property, and is increasingly applied to key equipment in various fields such as petroleum, chemical engineering, seawater desalination, hydraulic engineering, shipbuilding, nuclear engineering, metallurgy and the like on the basis of the consideration of service performance and economy.
The stainless steel/carbon steel composite board takes low-carbon steel or low-alloy steel as a base layer, and the clad stainless steel and the base layer are compounded together in rolling (hot rolling or cold rolling), explosion and other modes, so that the stainless steel/carbon steel composite board has the advantages of mechanical property and processability of the carbon steel and the corrosion resistance of the stainless steel, and simultaneously saves a large amount of noble metals such as Ni, Cr and the like, thereby realizing better economy of the material.
Under the influence of factors such as environmental protection, production efficiency, product performance and the like, rolling compounding, particularly hot rolling compounding processes are widely applied to the preparation of stainless steel composite plates at present. In the preparation process of the hot-rolled composite plate, technological parameters such as a blank assembling mode, a heating temperature, a starting rolling temperature, a reduction rate, a finish rolling temperature, a cooling process and the like influence the final performance of a composite plate product. At present, the rolling process of the single-phase stainless steel-carbon steel composite plate tends to be mature, and the preparation process of the duplex stainless steel-carbon steel composite plate still faces a plurality of challenges.
Disclosure of Invention
The embodiment of the invention provides a hot rolling process method of a duplex stainless steel-carbon steel composite plate, which aims to obtain a hot-rolled duplex stainless steel-carbon steel composite plate with excellent performance.
In order to achieve the purpose, the invention adopts the following technical scheme.
A hot rolling process method of a duplex stainless steel-carbon steel composite plate comprises the following steps:
carrying out symmetrical vacuum assembly on the duplex stainless steel and the carbon steel plate;
heating the symmetrical vacuum assembly of the duplex stainless steel-carbon steel to obtain a heated assembly;
performing controlled hot rolling on the assembly in the heating state to obtain a hot-rolled dual-phase stainless steel-carbon steel composite plate;
and (3) performing controlled cooling on the hot-rolled duplex stainless steel-carbon steel to obtain the duplex stainless steel-carbon steel composite plate with the interface shear strength higher than a set value.
Preferably, the duplex stainless steel in the duplex stainless steel-carbon steel contains 18-28% of Cr and 3-10% of Ni.
Preferably, the duplex stainless steel-carbon steel comprises duplex stainless steel 2205-carbon steel Q345C.
Preferably, the chemical compositions of the duplex stainless steel 2205-carbon steel Q345C in percentage by mass are shown in Table 1:
TABLE 1
Preferably, the set value comprises 400 MPa.
Preferably, the duplex stainless steel and the carbon steel plate are symmetrically assembled in a carbon steel-stainless steel-carbon steel mode according to the required plate thickness ratio, an anti-adhesion agent is coated between stainless steel and a stainless steel layer in the symmetrical assembling process, four sides of the assembled assembly are welded and sealed, vacuumizing holes are reserved, and the assembled assembly is sealed after vacuumizing to obtain the duplex stainless steel-carbon steel symmetrical vacuum assembled assembly.
Preferably, the heating at 1200 ℃ and the heat preservation for more than 2 hours are carried out in the symmetrical vacuum assembly process of the duplex stainless steel-carbon steel. 7. The method according to claim 5, wherein the initial rolling temperature of the heated assembly in the controlled hot rolling process is more than or equal to 1150 ℃, the final rolling temperature is more than or equal to 1000 ℃, the reduction ratio is more than or equal to 4, and the reduction ratio of the first two passes is more than or equal to 10%.
Preferably, the start cooling temperature in the controlled cooling process of the hot-rolled duplex stainless steel-carbon steel is more than or equal to 1000 ℃, the finish cooling temperature is more than or equal to 600 ℃, and the cooling rate is more than or equal to 10 ℃/s.
According to the technical scheme provided by the embodiment of the invention, compared with the requirement that the shearing strength is more than or equal to 210MPa in GB/T8165-2008 stainless steel composite plate and steel strip, the interface shearing strength can be improved by about 2 times by applying the process treatment method of the duplex stainless steel-carbon steel composite plate provided by the embodiment of the invention, so that the preparation of the duplex stainless steel-carbon steel composite plate with excellent performance is realized.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a process flow diagram of a process for treating a duplex stainless steel-carbon steel composite plate according to an embodiment of the present invention;
fig. 2 is a schematic view of the microstructure morphology of the interface of the duplex stainless steel-carbon steel composite plate according to the embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
The invention provides a process method for preparing a duplex stainless steel-carbon steel composite plate, which is to prepare the duplex stainless steel-carbon steel composite plate with excellent performance by adopting a symmetrical vacuum assembly and a rolling control cooling process for controlling key process parameters such as temperature, compression ratio, pass reduction rate and the like, wherein the interface shear strength can reach more than 400MPa, and reaches nearly 2 times of the requirement that the shear strength is more than or equal to 210MPa in GB/T8165-2008 stainless steel composite plates and steel strips.
The processing flow of the hot rolling process method for the duplex stainless steel-carbon steel composite plate provided by the embodiment of the invention is shown in figure 1, and comprises the following processing steps:
step S110: carrying out symmetrical vacuum assembly on the duplex stainless steel and the carbon steel plate;
step S120: heating the symmetrical vacuum assembly of the duplex stainless steel-carbon steel to obtain a heated assembly;
step S130: performing controlled hot rolling on the assembly in the heating state to obtain a hot-rolled dual-phase stainless steel-carbon steel composite plate;
step S140: and (3) performing controlled cooling on the hot-rolled duplex stainless steel-carbon steel to obtain the duplex stainless steel-carbon steel composite plate with the interface shear strength higher than a set value.
Preferably, the duplex stainless steel and the carbon steel plate in the step S110 are symmetrically assembled in a "carbon steel-stainless steel-carbon steel" manner according to the required plate thickness ratio, an anti-sticking agent needs to be coated between the stainless steel and the stainless steel layer in the symmetrical assembly process, four sides of the assembly are welded and edge-sealed, and a vacuumizing hole is reserved, and the assembly is sealed after vacuumizing to obtain the symmetrical vacuum assembly of the duplex stainless steel-carbon steel.
Preferably, the heating at 1200 ℃ and the heat preservation for more than 2 hours are carried out in the symmetrical vacuum assembly process of the duplex stainless steel-carbon steel in the step S120. Preferably, the initial rolling temperature of the heated assembly in the step S130 is not less than 1150 ℃, the final rolling temperature is not less than 1000 ℃, the reduction ratio is not less than 4, and the reduction ratio of the first two passes is not less than 10%.
Preferably, the start cooling temperature in the controlled cooling process of the hot rolled duplex stainless steel-carbon steel in the step S140 is more than or equal to 1000 ℃, the finish cooling temperature is more than or equal to 600 ℃, and the cooling rate is more than or equal to 10 ℃/S.
Preferably, the interface shear strength of the duplex stainless steel-carbon steel composite plate is higher than 400 MPa.
The duplex stainless steel in the duplex stainless steel-carbon steel in the embodiment of the invention contains 18-28% of Cr and 3-10% of Ni.
As a specific embodiment, the duplex stainless steel-carbon steel in the embodiment of the present invention is the duplex stainless steel 2205-carbon steel Q345C, and the specific chemical composition of the duplex stainless steel 2205-carbon steel Q345C by mass is shown in table 1.
TABLE 1 chemical composition (in mass%) of duplex stainless steel and carbon steel of examples of the present invention
It should be understood by those skilled in the art that the above described types and ranges of chemical compositions of duplex stainless steel-carbon steel composite panels are exemplary only, and that other types and ranges of chemical compositions of duplex stainless steel-carbon steel composite panels that are currently or later become known and may be used in embodiments of the present invention are also encompassed within the scope of the present invention and are hereby incorporated by reference.
Taking duplex stainless steel 2205-carbon steel Q345C as an example, the specific preparation process of the sample required by the test comprises the following steps:
the 18mm thick dual phase stainless steel 2205-2304 steel plate, 54mm thick Q345C steel plate and Q390 steel plate are selected to perform 4-layer symmetrical assembly of 2 materials, namely Q345C-2205-Q345C and Q390-2304-Q390. And coating an anti-sticking agent between the stainless steel and the stainless steel layer, welding and sealing the periphery of the stainless steel and reserving vacuumizing holes, vacuumizing and sealing to obtain the double-phase stainless steel-carbon steel symmetrical vacuum assembly. Heating the symmetrical vacuum assembly to 1200 ℃, preserving heat for 2h, then carrying out hot rolling at the beginning rolling temperature of 1180 ℃, carrying out rolling for 13 times, wherein the reduction rate of the first two times is 12%, the total compression ratio is 6, the final rolling temperature is 1020 ℃, cooling at the cooling rate of 10 ℃/s after rolling, the beginning cooling temperature is 1000 ℃, and the final cooling temperature is 600 ℃, and then air cooling to the room temperature to obtain the duplex stainless steel-carbon steel composite plate. In the specific production process, the corresponding steel can be obtained by using the corresponding preparation process.
The performance test of the duplex stainless steel-carbon steel composite board prepared by the process method of the embodiment of the invention comprises the following steps:
according to the test method for mechanical and technological properties of the composite steel plate of GB/T6396-2008, a shear sample is taken from the prepared experimental material, and a universal mechanical testing machine is adopted to test the shear strength of the interface of the composite plate, wherein the interface shear strength of the duplex stainless steel-carbon steel composite plate prepared by the process method of the embodiment of the invention is shown in the following table 2.
TABLE 2
| Test specimen | Processing state | Interfacial shear strength, MPa |
| 2205-Q345C | Controlled rolling and controlled cooling-hot rolling | 415 |
| 2304-Q390 | Controlled rolling and controlled cooling-hot rolling | 420 |
Fig. 2 is a schematic view of the appearance of a microstructure of an interface of a duplex stainless steel-carbon steel composite plate provided by an embodiment of the present invention, wherein the left side is a base layer of duplex stainless steel, and the microstructure of the duplex stainless steel is ferrite + austenite; the right side is base carbon steel, and the structure of the base carbon steel is ferrite plus pearlite; the composite board combining surface is arranged between the base layer and the composite layer.
In conclusion, compared with the requirement that the shearing strength is more than or equal to 210MPa in GB/T8165-2008 stainless steel composite plates and steel strips, the process treatment method of the duplex stainless steel-carbon steel composite plates provided by the embodiment of the invention is improved by about 2 times. The preparation of the duplex stainless steel-carbon steel composite board with excellent performance is realized.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A hot rolling process method for a duplex stainless steel-carbon steel composite plate is characterized by comprising the following steps:
carrying out symmetrical vacuum assembly on the duplex stainless steel and the carbon steel plate;
heating the symmetrical vacuum assembly of the duplex stainless steel-carbon steel to obtain a heated assembly;
performing controlled hot rolling on the assembly in the heating state to obtain a hot-rolled dual-phase stainless steel-carbon steel composite plate;
and (3) performing controlled cooling on the hot-rolled duplex stainless steel-carbon steel to obtain the duplex stainless steel-carbon steel composite plate with the interface shear strength higher than a set value.
2. The method according to claim 1, wherein the duplex stainless steel in the duplex stainless steel-carbon steel comprises 18% to 28% Cr and 3% to 10% Ni.
3. The method of claim 2, wherein the duplex stainless steel-carbon steel comprises duplex stainless steel 2205-carbon steel Q345C.
4. The method as claimed in claim 3, wherein the chemical composition of the duplex stainless steel 2205-carbon steel Q345C in mass percent is as shown in Table 1:
TABLE 1
5. The method of claim 1, wherein the set value comprises 400 MPa.
6. The method according to any one of claims 1 to 5, wherein the duplex stainless steel and carbon steel plate are symmetrically assembled in a carbon steel-stainless steel-carbon steel manner according to the required plate thickness ratio, an anti-adhesion agent is coated between stainless steel and a stainless steel layer in the symmetrical assembling process, four sides of the assembled body are welded and edge-sealed, vacuum holes are reserved, and the assembled body is sealed after vacuum pumping so as to obtain the duplex stainless steel-carbon steel symmetrical vacuum assembled body.
7. The method of claim 6, wherein the heating at 1200 ℃ and holding for more than 2 hours is performed during symmetrical vacuum assembly of the duplex stainless steel-carbon steel.
8. The method according to claim 6, wherein the initial rolling temperature of the heated assembly in the controlled hot rolling process is more than or equal to 1150 ℃, the final rolling temperature is more than or equal to 1000 ℃, the reduction ratio is more than or equal to 4, and the reduction ratio of the first two passes is more than or equal to 10%.
9. The method according to claim 6, wherein the controlled cooling temperature of the hot rolled duplex stainless steel-carbon steel is not less than 1000 ℃ at the start cooling temperature, not less than 600 ℃ at the end cooling temperature, and not less than 10 ℃/s at the cooling rate.
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| JP2001205302A (en) * | 2000-01-26 | 2001-07-31 | Sumitomo Metal Ind Ltd | Hot-rolling method for preventing circumferential flaw of steel sheet |
| CN105598166A (en) * | 2016-01-04 | 2016-05-25 | 燕山大学 | Different-temperature rolling method for preparing stainless steel and carbon steel composite board |
| CN105772507A (en) * | 2016-03-25 | 2016-07-20 | 首钢总公司 | Carbon steel and duplex stainless steel composite steel plate and production method thereof |
| CN105880285A (en) * | 2016-06-13 | 2016-08-24 | 河北工业大学 | Vacuum hot rolling method of stainless steel composite plate |
| CN109532144A (en) * | 2018-11-29 | 2019-03-29 | 宝山钢铁股份有限公司 | A kind of super-duplex stainless steel clad steel plate and its manufacturing method |
| CN111020368A (en) * | 2019-10-30 | 2020-04-17 | 鞍钢股份有限公司 | Duplex stainless steel composite steel plate for seawater desalination and manufacturing method thereof |
-
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- 2021-05-10 CN CN202110505266.1A patent/CN113399457A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001205302A (en) * | 2000-01-26 | 2001-07-31 | Sumitomo Metal Ind Ltd | Hot-rolling method for preventing circumferential flaw of steel sheet |
| CN105598166A (en) * | 2016-01-04 | 2016-05-25 | 燕山大学 | Different-temperature rolling method for preparing stainless steel and carbon steel composite board |
| CN105772507A (en) * | 2016-03-25 | 2016-07-20 | 首钢总公司 | Carbon steel and duplex stainless steel composite steel plate and production method thereof |
| CN105880285A (en) * | 2016-06-13 | 2016-08-24 | 河北工业大学 | Vacuum hot rolling method of stainless steel composite plate |
| CN109532144A (en) * | 2018-11-29 | 2019-03-29 | 宝山钢铁股份有限公司 | A kind of super-duplex stainless steel clad steel plate and its manufacturing method |
| CN111020368A (en) * | 2019-10-30 | 2020-04-17 | 鞍钢股份有限公司 | Duplex stainless steel composite steel plate for seawater desalination and manufacturing method thereof |
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Application publication date: 20210917 |