CN111014293A - Method for rolling metal composite plate strip with assistance of electroplating deposition - Google Patents
Method for rolling metal composite plate strip with assistance of electroplating deposition Download PDFInfo
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- CN111014293A CN111014293A CN201911242706.8A CN201911242706A CN111014293A CN 111014293 A CN111014293 A CN 111014293A CN 201911242706 A CN201911242706 A CN 201911242706A CN 111014293 A CN111014293 A CN 111014293A
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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
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
- C25D5/022—Electroplating of selected surface areas using masking means
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0614—Strips or foils
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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
- B21B2001/386—Plates
Abstract
The invention belongs to the technical field of metal composite plate strip preparation, and particularly relates to a method for rolling a metal composite plate strip with the assistance of electroplating deposition, which comprises the following steps: 1) surface treatment; 2) coating a film; 3) electroplating deposition; 4) preparing a blank; 5) rolling; 6) heat treatment; 7) finishing; the invention combines electroplating deposition with the traditional rolling process, a plating layer is locally deposited on the surface to be compounded of the metal strip substrate, one part of the deposited plating layer on the surface of the substrate and the substrate metal generate a hooking effect and a riveting effect, the other part of the plating layer is diffused with the contact interface of the substrate metal and generates the hooking effect and the riveting effect with the substrate metal, the co-plastic deformation of the dissimilar metal strip and the plating layer is promoted under the action of the rolling force, the shearing stress action area of the metal surface is obviously increased, the numerical value is increased, the shearing effect between metals is enhanced, the cracking of the metal interface is accelerated, the metallurgical welding is promoted, the subsequent heat treatment is combined, and the comprehensive mechanical property is further improved.
Description
Technical Field
The invention belongs to the technical field of metal composite plate strip preparation, and particularly relates to a method for rolling a metal composite plate strip with assistance of electroplating deposition.
Background
The metal composite material can fully exert the advantages of each component material by compounding different metals under the actions of physics, chemistry and the like, so that the product has excellent comprehensive properties of corrosion resistance, light weight, high specific strength, shock absorption, noise reduction and the like, and is widely applied to important fields of aerospace, military equipment, petrochemical industry and the like.
The metal composite material mainly comprises a layered composite material, a particle reinforced material, a fiber reinforced material and the like, and the preparation method comprises a rolling composite method, a diffusion welding method, an explosion composite method, a casting and rolling composite method, an extrusion drawing method and the like. According to the different physical states of the composite material during molding, the processing methods of the layered composite material at the present stage can be divided into a liquid-liquid phase composite method, a liquid-solid phase composite method and a solid-solid phase composite method, and the different processing methods have advantages and limitations respectively.
The liquid-liquid phase composite method is mainly electromagnetic continuous casting composite, is mainly used for producing stainless steel-carbon steel composite materials, is still in a research stage at present, and the structure and the performance of a composite plate are poor compared with those of a rolling composite method.
The solid-liquid phase compounding method mainly comprises casting/casting-rolling compounding, a jet deposition method, a reverse solidification method and the like. The casting/casting-rolling has high composite temperature during production, the surface of the composite substrate is easy to oxidize, the melting loss of a bonding part is easy to cause due to large difference of melting points of the multilayer metal and the base metal, and the interface bonding effect is poor. The spray deposition method and the reverse solidification method are both to compound a solidification layer on the substrate, the thickness of the compound layer is limited, and the method is only suitable for improving the performances of corrosion resistance, wear resistance, high temperature resistance and the like of the surface of the substrate.
The solid-solid phase compounding method is of various types, and mainly comprises explosive compounding, rolling compounding, diffusion welding and the like. The explosion cladding is characterized in that high-strength chemical energy generated by explosive explosion is used for driving the clad plate to collide the substrate at high speed, so that an oxide layer on the surface of metal is damaged, the plastic deformation, melting and diffusion of the clad plate are promoted, metal welding is realized, the composite plate is suitable for metal welding with great melting point difference, great thermal expansion difference and great hardness difference, the generation of intermetallic compounds is avoided, the bonding strength is high, but the yield, the productivity and the yield are low, the product quality stability is poor, and huge potential safety hazards, noise pollution and environmental hazards are caused. The diffusion welding is to stack the component metals with clean surfaces together, and the metal combination can be divided into the diffusion welding without additives and with the aid by the mutual diffusion between interface atoms after heating and pressurizing.
The basic principle of the rolling composite method is that under the action of rolling force, two or more than two metal materials are subjected to plastic deformation simultaneously, a surface metal layer is cracked, fresh metal is exposed, metallurgical bonding is formed between plate surfaces, and the bonding strength is further improved through subsequent heat treatment; the production cost is low, the process is simple, and the large-scale industrial production is easy to realize.
At present, in the process of rolling and preparing the layered metal composite material, two metals are acted by deformation force in the plastic deformation process to enable the contact surface to approach the atom thickness distance to form a large number of bonding points, and then the bonding points are diffused to form stable metallurgical bonding. Before compounding, the elongation rate difference and the deformation capability are different due to different mechanical properties such as linear expansion coefficients and thermal expansion coefficients of two metals, so that the deformation of dissimilar metals in a deformation region is inconsistent, additional stress is stored in a rolled composite plate strip, and the plate shape problems such as bending, buckling, local buckling and the like are presented.
Disclosure of Invention
The invention provides a method for rolling a metal composite plate strip by electroplating deposition assistance, aiming at the problems that the composite plate strip produced by rolling and compounding in the prior art has internal additional stress, can not be continuously produced, has poor plate shape, low bonding strength and is easy to crack.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for rolling metal composite plate strips with assistance of electroplating deposition comprises the following steps:
1) surface treatment: cleaning the surface of the base material and the composite material of the metal plate strip by using a grinding machine until a metal matrix is seen;
2) film covering: polishing the surface to be compounded of the base material, and laminating a film;
3) electroplating deposition: electroplating deposition is carried out on the surface to be compounded of the base material coated with the film, and the film coated in the step 2) is removed after the electroplating deposition;
4) blank preparation: buckling the surface to be compounded of the base material and the polished surface of the composite material to prepare a blank to obtain a double-layer composite plate blank;
5) rolling: feeding the obtained double-layer composite plate blank into a rolling mill, and rolling to a required thickness to obtain a double-layer composite plate strip;
6) and (3) heat treatment: heating and insulating the double-layer composite plate strip by using a tubular vacuum furnace or a method for packaging a quartz tube in vacuum, carrying out diffusion annealing treatment, and cooling to obtain the double-layer metal composite plate strip;
7) and (3) finishing: and trimming, pulling and straightening the obtained double-layer metal composite plate strip.
Further, the deformation resistance of the base material in the step 1) is larger than that of the composite material.
Furthermore, the film used in the step 2) is a polyester film with through holes on the surface, and the proportion of the area of the through holes in the area of the film is as follows:
wherein λ is the ratio of the area of the through holes to the area of the coating film, lbIs the length of the long side of the substrate, wbIs the length of the short side of the substrate, dcThe diameter of the through hole on the polyester film.
Furthermore, in the step 3), before electroplating deposition is performed on the surface to be composited of the coated base material, electroplating pretreatment needs to be performed, and electroplating post-treatment needs to be performed after electroplating deposition.
Further, the step 4) of buckling the surface to be compounded of the base material and the polished surface of the composite material for blank making to obtain the double-layer composite plate blank specifically comprises the following steps: and buckling the electroplating deposition surface of the base material and the polished surface of the composite material, conveying the stacked base material and the composite material to a press machine for pressing, packaging and welding the periphery of the stacked and pressed base material and the periphery of the composite material, then drilling holes at the ends of the stacked ultrathin composite strips, vacuumizing, and then sealing the holes to obtain the double-layer composite plate blank.
Further, the rolling mill used in the step 5) is any one of a corrugated rolling mill, an asynchronous rolling mill or a two-roll rolling mill, when the rolling process is cold rolling, the double-layer composite slab can be directly sent to the rolling mill for rolling, when the rolling process is warm rolling, the heating method of the double-layer composite slab is to send the double-layer composite slab to an atmosphere heating furnace and heat the double-layer composite slab to a warm rolling temperature, and when the rolling process is hot rolling, the heating method of the double-layer composite slab is to send the double-layer composite slab to the heating furnace and heat the double-layer composite slab to a hot.
Further, the cooling treatment in the step 6) is furnace cooling.
Compared with the prior art, the invention has the following advantages:
1. the invention combines electroplating deposition and the traditional rolling process, a plating layer is locally deposited on the surface to be compounded of the metal plate strip substrate, one part of the deposited plating layer on the surface of the substrate generates a hooking effect and a riveting effect with the substrate metal, and the other part of the deposited plating layer is diffused with the contact interface of the substrate metal, therefore, the composite plate blank has a convex curved surface of the local plating layer diffused with the substrate metal in the rolling process, the contact area of the composite plate strip is increased, the interlaminar local strong positive stress value and the interlaminar local strong positive stress area are obviously increased, the combination of the local convex positions is promoted and the local convex positions are continuously expanded to the peripheral side, the deformation strengthening is realized on a deformation area, on the basis, the substrate metal plate strip with large deformation resistance and the composite metal plate strip with small deformation resistance generate coordinated traction deformation, the deformation rate of dissimilar metal plates tends to be consistent, and in addition, the plating layer with the, under the action of rolling force, the co-plastic deformation of the dissimilar metal plate strip and the coating can be promoted, the shearing stress action area of the metal surface is obviously increased, the numerical value is increased, the shearing action between metals is enhanced, the fracture of a metal interface is accelerated, the metallurgical welding is promoted, the subsequent heat treatment is combined, and the comprehensive mechanical property of the composite material is further improved, so that the problems of poor plate shape, low bonding strength and the like of the dissimilar metal laminated composite material caused by the difference of physical properties and the like are solved, and the metal laminated composite material with uniform deformation and high bonding strength is obtained;
2. the method has simple process, and the manufactured metal composite plate strip has high bonding strength and good quality and can be continuously produced in large batch.
Drawings
FIG. 1 is a schematic illustration of a substrate after a film-coating electroplating deposition;
FIG. 2 is a schematic view of a two-layer composite slab;
FIG. 3 is a partial enlarged view of a double-layer composite slab;
FIG. 4 is a schematic view of rolling a double-layer composite plate;
in the figure, a polyester film-1, a base material-2, a composite material-3, an upper working roll-4, a lower working roll-5 and a plating layer-6.
Detailed Description
In order to further illustrate the technical solution of the present invention, the present invention is further illustrated by the following examples.
Example 1
A method for rolling metal composite plate strips with assistance of electroplating deposition comprises the following steps:
1) surface treatment: selecting a TA1 titanium plate and a 6061 aluminum plate, wherein the titanium plate is 0.5mm thick, 50mm wide and 120mm long and serves as a base plate 2, the aluminum plate is 0.3mm thick, 50mm wide and 120mm long and serves as a clad plate 3, and the surfaces of the TA1 titanium plate and the 6061 aluminum plate are cleaned by a grinding machine until a metal matrix is seen;
2) film covering: firstly, polishing the composite surface of the base material belt by using a polishing machine, wherein the surface roughness reaches Ra0.6, then, coating a polished surface to be composited with a film, wherein the film is a polyester composite film with through holes on the surface, the diameter of each through hole is 63 microns, and the proportion of the area of all the through holes in the whole film is as follows:
wherein λ is the ratio of the area of the through holes to the area of the coating film, lbIs the length of the long side of the substrate, wbIs the length of the short side of the substrate, dcThe diameter of the through hole on the polyester film;
3) electroplating deposition: firstly, the surface of the coated substrate is cleaned by organic solvent and alkaline solution, then the surface is cleaned by deionized water, and the electroplating solution is composed of chromic anhydride (250g/L) and concentrated sulfuric acid H2SO4(2.5g/L), the flow rate of the plating solution is 3.6L/min, the distance between two electrodes is 48mm, the temperature is 55 ℃, and the current density is 50A/dm2The square wave pulse current with the pulse frequency of 10kHz and the pulse duty ratio of 85 percent and the coating thickness of 48um, cleaning and dehydrogenating the coated substrate after electroplating, and finally removing the coating in the step 2) along the corners of the substrate, as shown in figure 1;
4) blank preparation: as shown in fig. 2 and 3, lapping and stacking the polished surfaces of a TA1 titanium plate and a 6061 aluminum plate, then conveying the lapped composite plate to a press machine for pressing, packaging and welding the periphery of the lapped composite plate strip, then drilling holes at the end parts of the lapped composite plate strip, vacuumizing the holes, and sealing the holes to obtain a composite plate blank;
5) rolling: as shown in fig. 4, the clad plate blank is sent into a two-roll reversible cold rolling mill and rolled at a rolling speed of 40r/min and a reduction of 48% so that the base metal and the clad metal are tightly combined;
6) and (3) heat treatment: annealing the rolled composite plate strip by using a tubular vacuum furnace, keeping the temperature at 850 ℃ for 2h, and cooling along with the furnace to obtain a TA1 titanium-6061 aluminum plate composite plate strip;
7) and (3) finishing: and (4) cutting edges of the obtained TA1 titanium-6061 aluminum plate composite plate strip, and performing withdrawal straightening.
Example 2
A method for rolling metal composite plate strips with assistance of electroplating deposition comprises the following steps:
1) surface treatment: as shown in FIGS. 1 and 2, a TA1 titanium plate and a SUS304 stainless steel plate, which have the dimensions of 0.8mm thick, 40mm wide and 100mm long, were selected as the substrate 2; the titanium plate was 0.5mm thick, 40mm wide, 100mm long, and used as a clad plate 3, and the surfaces of the TA1 titanium plate and the SUS304 stainless steel plate were cleaned with a grinder until a metal matrix was seen;
2) film covering: firstly, polishing the composite surface of the base material belt by using a polishing machine, wherein the surface roughness reaches Ra0.3, then, coating a polished surface to be composited with a film, wherein the film is a polyester composite film with through holes on the surface, the diameter of each through hole is 110 microns, and the proportion of the area of all the through holes in the whole film is as follows:
wherein λ is the ratio of the area of the through holes to the area of the coating film, lbIs the length of the long side of the substrate, wbIs the length of the short side of the substrate, dcThe diameter of the through hole on the polyester film;
3) electroplating deposition: first, the surface of the coated substrate was cleaned with an organic solvent and an alkaline solution, and then, the surface was cleaned with deionized water, and the plating solution was composed of copper pyrophosphate (70g/L) and potassium pyrophosphate (300 g/L)g/L), dipotassium hydrogen phosphate (40g/L), temperature of 42 ℃, current density of 10A/dm2The pulse frequency is 7KHZ, the pulse duty ratio is 20 percent of square wave pulse current, the thickness of a coating is 60um, the coated substrate is cleaned and dehydrogenated after electroplating, and finally the coating in the step 2) is removed along the corners of the substrate, as shown in figure 1;
4) blank preparation: as shown in fig. 2 and 3, the grinding surfaces of a TA1 titanium plate and a SUS304 stainless steel plate are buckled and overlapped, then the materials are sent to a press machine for pressing, the periphery of the overlapped composite plate strip is packaged and welded, then the end part of the overlapped composite plate strip is drilled and vacuumized, and then the hole is sealed, so that a composite plate blank is obtained;
5) rolling: as shown in fig. 4, the clad plate blank is fed into a two-roll reversible mill and rolled at a rolling speed of 36r/min with a rolling reduction of 26% to tightly bond the base metal and the clad metal;
6) and (3) heat treatment: annealing the rolled composite plate strip by using a method of vacuum packaging a quartz tube, heating the composite plate strip at 850 ℃, preserving the heat for 2 hours, and cooling the composite plate strip along with a furnace to obtain a TA1 titanium-SUS 304 stainless steel composite plate strip;
7) and (3) finishing: the obtained TA1 titanium-SUS 304 stainless steel composite plate strip is subjected to edge cutting and straightening.
In the above embodiment, the rolling mill used in step 5) may also be a corrugated rolling mill or an asynchronous rolling mill, when the rolling process is cold rolling, the double-layer composite slab may be directly fed into the rolling mill for rolling, when the rolling process is warm rolling, the heating method of the double-layer composite slab is to feed the double-layer composite slab to an atmosphere heating furnace and heat the double-layer composite slab to a warm rolling temperature, and when the rolling process is hot rolling, the heating method of the double-layer composite slab is to feed the double-layer composite slab to the heating furnace and heat the double-layer composite slab to a hot rolling.
While there have been shown and described what are at present considered to be the essential features and advantages of the invention, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A method for rolling a metal composite plate strip with the assistance of electroplating deposition is characterized by comprising the following steps: the method comprises the following steps:
1) surface treatment: cleaning the surface of the base material and the composite material of the metal plate strip by using a grinding machine until a metal matrix is seen;
2) film covering: polishing the surface to be compounded of the base material, and laminating a film;
3) electroplating deposition: electroplating deposition is carried out on the surface to be compounded of the base material coated with the film, and the film coated in the step 2) is removed after the electroplating deposition;
4) blank preparation: buckling the surface to be compounded of the base material and the polished surface of the composite material to prepare a blank to obtain a double-layer composite plate blank;
5) rolling: feeding the obtained double-layer composite plate blank into a rolling mill, and rolling to a required thickness to obtain a double-layer composite plate strip;
6) and (3) heat treatment: heating and insulating the double-layer composite plate strip by using a tubular vacuum furnace or a method for packaging a quartz tube in vacuum, carrying out diffusion annealing treatment, and cooling to obtain the double-layer metal composite plate strip;
7) and (3) finishing: and trimming, pulling and straightening the obtained double-layer metal composite plate strip.
2. The method of claim wherein the step of electrolessly depositing a metal clad laminate strip comprises the steps of: the deformation resistance of the base material in the step 1) is larger than that of the composite material.
3. A method of electrolessly depositing a metal composite strip assisted by rolling as claimed in claim 1 wherein: the film used in the step 2) is a polyester film with through holes on the surface, and the proportion of the area of the through holes in the area of the film is as follows:
wherein λ is the ratio of the area of the through holes to the area of the coating film, lbIs the length of the long side of the substrate, wbIs the length of the short side of the substrate, dcThe diameter of the through hole on the polyester film.
4. A method of electrolessly depositing a metal composite strip assisted by rolling as claimed in claim 1 wherein: in the step 3), before electroplating deposition is carried out on the surface to be composited of the coated base material, electroplating pretreatment needs to be carried out, and electroplating post-treatment needs to be carried out after electroplating deposition.
5. A method of electrolessly depositing a metal composite strip assisted by rolling as claimed in claim 1 wherein: and 4) buckling the surface to be compounded of the base material and the polished surface of the composite material to prepare a blank, wherein the specific steps of obtaining the double-layer composite plate blank are as follows: and buckling the electroplating deposition surface of the base material and the polished surface of the composite material, conveying the stacked base material and the composite material to a press machine for pressing, packaging and welding the periphery of the stacked and pressed base material and the periphery of the composite material, then drilling holes at the ends of the stacked ultrathin composite strips, vacuumizing, and then sealing the holes to obtain the double-layer composite plate blank.
6. A method of electrolessly depositing a metal composite strip assisted by rolling as claimed in claim 1 wherein: the rolling mill used in the step 5) is any one of a corrugated rolling mill, an asynchronous rolling mill or a two-roll rolling mill, when the rolling process is cold rolling, the double-layer composite slab can be directly sent into the rolling mill for rolling, when the rolling process is warm rolling, the heating method of the double-layer composite slab is to send the double-layer composite slab to an atmosphere heating furnace and heat the double-layer composite slab to a warm rolling temperature, and when the rolling process is hot rolling, the heating method of the double-layer composite slab is to send the double-layer composite slab to the heating furnace and heat the double-layer composite slab to a hot rolling temperature.
7. A method of electrolessly depositing a metal composite strip assisted by rolling as claimed in claim 1 wherein: the cooling treatment in the step 6) is furnace cooling.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112934964A (en) * | 2021-01-25 | 2021-06-11 | 太原理工大学 | Physical vapor deposition and laser energy field assisted metal composite strip rolling method |
| CN113183492A (en) * | 2021-04-02 | 2021-07-30 | 太原理工大学 | Rolling process of stainless steel/carbon fiber/stainless steel laminated plate |
| CN113926856A (en) * | 2021-08-27 | 2022-01-14 | 核工业西南物理研究院 | Method for preparing dispersion-strengthened metal material in batch |
| CN114345935A (en) * | 2021-12-28 | 2022-04-15 | 浙江精瑞工模具有限公司 | High-speed steel rolling method |
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