CN116288328A - Method for cladding surface of alloy powder wire mesh after composite rolling - Google Patents

Method for cladding surface of alloy powder wire mesh after composite rolling Download PDF

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Publication number
CN116288328A
CN116288328A CN202310141820.1A CN202310141820A CN116288328A CN 116288328 A CN116288328 A CN 116288328A CN 202310141820 A CN202310141820 A CN 202310141820A CN 116288328 A CN116288328 A CN 116288328A
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Prior art keywords
wire mesh
alloy powder
powder
cladding
alloy
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CN202310141820.1A
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Chinese (zh)
Inventor
周照耀
彭正南
邓俊
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South China University of Technology SCUT
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South China University of Technology SCUT
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Priority to CN202310141820.1A priority Critical patent/CN116288328A/en
Publication of CN116288328A publication Critical patent/CN116288328A/en
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Powder Metallurgy (AREA)

Abstract

The invention discloses a surface cladding method after alloy powder wire mesh compound rolling, which comprises the steps of firstly uniformly rolling alloy powder materials on a metal wire mesh belt to obtain an alloy powder wire mesh belt blank, then coating and attaching the alloy powder wire mesh belt blank on the surface of a metal solid, fixing (such as welding and fixing the belt edge part of the metal powder wire mesh compound blank), and then cladding the alloy powder wire mesh belt blank on the surface of the metal solid. According to the invention, the alloy powder is uniformly rolled on the metal wire mesh belt, so that the powder feeding problem in the surface cladding process can be solved while the physical and chemical properties of the powder are maintained, the mechanical structure of the surface cladding equipment is simplified, and the surface cladding production efficiency is improved.

Description

Method for cladding surface of alloy powder wire mesh after composite rolling
Technical Field
The invention relates to the technical field of surface cladding, in particular to a method for cladding the surface of an alloy powder wire mesh after composite rolling.
Background
The laser cladding technology is to put the selected coating material on the surface of the matrix in different filling ways, to melt the selected coating material and the shallow layer on the surface of the matrix at the same time by laser irradiation, to form a surface coating with extremely low dilution after rapid solidification and forming metallurgical bonding with the matrix material, thereby remarkably improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance, electrical characteristics and the like of the surface of the matrix material. The laser cladding is divided into two forms according to the powder cladding mode, namely a preset form and a synchronous form. The main process flow of the preset laser cladding is surface pretreatment, preset cladding material, preheating, melting and post heat treatment, and the main process flow of the synchronous laser cladding is surface pretreatment, melting and post heat treatment. Although the synchronous laser cladding has high automation degree, the synchronous laser cladding has the defects of complex structure of the powder feeder, high manufacturing cost, difficulty in uniformly mixing mixed powder and the like. Therefore, in the application of laser cladding, the preset laser cladding mode, especially the mode of directly presetting the powder layer, is more applied.
In addition, similar patent applications were retrieved, such as application number: CN201610116307.7; patent name: a method and device for automatically tabletting and placing powder tablets in the laser cladding process discloses a method and device for automatically tabletting and placing powder tablets. The automatic level of the cladding process is improved while the rapid laser cladding preset powder tabletting is realized under the conditions of no synchronous laser cladding device and manual pressing and low powder tabletting placing efficiency; application number: CN201710335440.6; patent name: an adjustable preset powder spreading device for laser cladding discloses an adjustable preset powder spreading device for laser cladding, when preset powder feeding laser cladding is performed, the powder spreading thickness and the powder spreading area during preset powder spreading can be accurately controlled, the powder spreading area and the powder spreading thickness can be adjusted, and the operation is convenient; application number: CN201910859162.3; patent name: a vacuum sintering method for preparing a coating process by laser cladding is to prepare powder to be clad into paste or paste, print the paste or paste on the surface of a substrate to be clad through screen printing, sinter the paste to form a preset layer, fuse the preset layer through an ultrasonic vibrator and laser at the same time to obtain a composite coating, and perform annealing heat treatment on the composite coating to obtain the high-quality composite coating. The above patent application shows that the spreading of the powder to be coated in the process of laser cladding is a core problem, and the problems of uniformly spreading the powder, realizing controllable thickness of the powder and reducing the cost are still studied by the current technicians, and are generally improved from the aspects of powder feeding mechanism structure or preset powder process.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings in the prior art, and provides a method for cladding the surface of an alloy powder wire mesh after composite rolling.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows: a method for cladding the surface of an alloy powder wire mesh after composite rolling comprises the following steps:
step 1: preparation of wire mesh tape
Firstly, selecting the mesh number of a metal wire mesh according to the thickness requirement of a required cladding layer, and cutting out a metal wire mesh belt with required length and width according to the shape and the size of a substrate to be clad;
step 2: preparation of alloy powders
Selecting alloy powder with corresponding mesh number according to the mesh number of the selected wire mesh, mixing the alloy powder with the powder, and then placing the alloy powder into a powder mixer for powder mixing, and uniformly mixing the powder with different components;
step 3: alloy powder sieving
According to the thickness of the required powder layer, adjusting the powder box gap of the rolling powder feeding box, sieving the alloy powder after powder mixing, and removing unqualified powder particles to ensure the continuity of powder feeding in the rolling process;
step 4: preparation of alloy powder wire mesh strip blank
Rolling the prepared metal wire mesh belt and the alloy powder after mixing and sieving, uniformly distributing the alloy powder on the metal wire mesh belt and combining to obtain a required alloy powder wire mesh belt blank;
step 5: alloy powder fixed silk screen strip blank
Wrapping the alloy powder wire mesh strip blank on a substrate material to be clad, and fixing the alloy powder wire mesh strip blank on the substrate;
step 6: cladding and sintering
Melting, solidifying and covering the fixed alloy powder net belt blank on the surface of a base material, and cladding the metal solid surface after cladding is completed, wherein an adaptive cladding method is adopted in a targeted manner to realize metallurgical bonding between the alloy powder net belt blank and the base material, so that the aim of forming a wear-resistant coating on the surface of the base material is fulfilled;
step 7: rolling the cladding layer
After cladding is completed, the cladding layer is rolled, so that the structure of the cladding layer becomes more densified, and the comprehensive performance of the cladding layer is improved.
Preferably, the cladding is laser continuous local scanning sintering, plasma continuous local scanning sintering or integral sintering of the workpiece in a sintering furnace.
Preferably, the surface of the cladding metal solid is a plane, a cylinder outer surface or an inner surface of a metal part hole.
Preferably, the surface of the cladding metal solid is the surface of the gear metal part tooth, wherein the alloy powder wire mesh belt blank is firstly attached to the contour surface of the tooth, and the alloy powder wire mesh belt blank is fixed at the edge by laser welding.
Preferably, the wire mesh is a stainless steel wire mesh, and the alloy powder is 304 stainless steel-WC alloy formula powder.
Preferably, the metal wire mesh is a red copper wire mesh, and the alloy powder is Cu-WC alloy composite formula powder.
Preferably, the alloy powder wire mesh strip blank has a thickness of 0.1-2.0mm.
Preferably, the alloy powder wire mesh strip body can be coated on the outer surface of the cylindrical material, fixed by using an adhesive tape, coated with a layer of mica paper or graphite paper, locked by using a wide lock hoop and placed into a vacuum sintering furnace for sintering.
Preferably, the alloy powder is a cemented carbide formulation powder or a titanium alloy powder.
Preferably, the cladding and sintering environment is vacuum or protective atmosphere.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the invention, powder is uniformly distributed on the metal wire mesh belt in a prefabricated belt material mode, the rolling efficiency is high, the thickness of the powder layer is easy to control, and the alloy powder wire mesh belt blank has good flexibility under the condition of no sintering and does not fall off powder during bending.
2. The invention attaches the alloy powder silk screen belt blank to the surface of the base metal part material in advance, the process method is simple and reliable, the powder feeding and sintering process is simplified to be the sintering process, and the cladding sintering scanning speed is improved.
3. The thickness of the cladding powder metallurgy layer is easy to control, the cladding powder metallurgy layer can be thin and uniform, the surface quality of the cladding layer is better, the subsequent machining allowance is small, and the material utilization rate is high.
4. The invention does not need a special powder feeding system, the structure of the required cladding device is greatly simplified, the manufacturing cost of equipment is reduced, and the working efficiency is high, stable and reliable.
5. Compared with the powder spraying process, the invention has the advantages of small powder consumption, no powder splashing waste and high powder utilization rate.
6. The invention can reduce the thickness of the metal powder layer by adjusting the gap of the rolling powder feeding box, and can effectively save the cost when the unit price of the material is high.
7. The process route is simple and convenient, and can be applied to the field scene of repairing large parts worn by wind power generation equipment and the like.
8. The metal wire mesh used in the invention can select nickel-containing stainless steel with good combination performance with both powder materials and matrix materials, and the powder materials with repulsive performance can be combined on the surface of the steel matrix materials.
9. The method has high efficiency, low cost, stability and reliability, and the obtained cladding layer has good surface quality, can be used for mass production, and creates good economic benefit.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto.
Example 1
The embodiment discloses a method for cladding the surface of an alloy powder wire mesh after clad-rolling, which is used for obtaining a cladding layer manufactured by cladding the surface of the alloy powder wire mesh after clad-rolling, wherein the used materials are 304 stainless steel wire mesh with 400 meshes, WC powder with 75 mu m and 304 stainless steel powder with 75 mu m.
The application steps and the process conditions of the cladding layer are as follows:
step 1: preparation of wire mesh tape
Cutting a 400-mesh 304 stainless steel wire mesh into a wire mesh belt with a corresponding length and width according to the shape and the size of a substrate to be clad;
step 2: preparation of alloy powders
Putting 75 mu mWC powder and 75 mu 304 stainless steel powder together according to 10% mass fraction into a powder mixing tank for powder mixing, wherein the powder mixing time is set to 24 hours, and the rotating speed is 60r/min;
step 3: alloy powder sieving
Adjusting the gap of a powder box used for rolling to a required width, sieving the alloy powder, repeating for 3 times, and removing the powder with the non-conforming particle size;
step 4: preparation of alloy powder wire mesh strip blank
Spreading the powder obtained after the powder screening in the previous step on a 304 stainless steel wire net with a preset thickness (0.1-1 mm), and then rolling the powder and the metal wire net together by a two-roller cold rolling mill to obtain a WC-304 wire net belt blank (namely an alloy powder wire net belt blank) with high bonding strength and good toughness;
step 5: alloy powder fixed silk screen strip blank
The WC-304 silk screen belt blank with good toughness prepared by the steps is tightly wrapped on the outer surface of the No. 45 steel bar material and is tightly pressed to make the material fit;
step 6: cladding and sintering
After cladding is completed, adopting laser continuous local scanning sintering to realize metallurgical bonding between the composite strip and the matrix material, thereby realizing the purpose of forming a wear-resistant coating on the surface of the matrix material;
step 7: and (3) rolling the cladding layer, and after the cladding is finished, rolling the cladding layer to enable the structure of the cladding layer to become more densified, so that the comprehensive performance of the cladding layer is improved.
Example 2
The cladding layer produced in this example was made of 400 mesh 304 stainless steel mesh with 75 mu mWC powder and 75 mu 304 stainless steel powder.
The above cladding layer, the application steps and the process conditions are basically the same as those of example 1, but this example is different from example 1: the WC powder mass fraction in step 2 was 20%.
Example 3
The cladding layer produced in this example was prepared from 80 mesh red copper mesh, 180 μm mWC powder and 180 μm red copper powder.
The above cladding layer, the application steps and the process conditions are basically the same as those of example 1, but this example is different from example 1: the wire mesh in step 1 was an 80 mesh red copper mesh, and the alloy powder in step 2 was 180 μm mWC powder and 180 μm red copper powder.
Example 4
The cladding layer produced in this example was made of 200 mesh red copper wire mesh with 75 μm mWC powder and 75 μm red copper powder.
The above cladding layer, the application steps and the process conditions are basically the same as those of example 1, but this example is different from example 1: the wire mesh in step 1 was a 200 mesh red copper mesh, and the alloy powder in step 2 was 75 mu mWC powder and 75 mu red copper powder.
Example 5
The raw materials of the cladding layer produced in this example were 200 mesh red copper wire mesh, 75 μm WC powder and 75 μm red copper powder.
The above cladding layer, the application steps and the process conditions are basically the same as those of example 1, but this example is different from example 1: the metal wire mesh in the step 1 is a 200-mesh red copper wire mesh, the alloy powder in the step 2 is 75 mu mWC powder and 75 mu red copper powder, and the cladding method in the step 6 is plasma continuous local scanning sintering cladding.
Example 6
The raw materials of the cladding layer produced in this example were 200 mesh red copper wire mesh, 75 μm WC powder and 75 μm red copper powder.
The above cladding layer, the application steps and the process conditions are basically the same as those of example 1, but this example is different from example 1: the metal wire mesh in the step 1 is a 200-mesh red copper wire mesh, the alloy powder in the step 2 is 75 mu mWC powder and 75 mu red copper powder, the cladding method in the step 6 is to put the workpiece into a sintering furnace for integral sintering, the sintering temperature is 850 ℃, and the heat preservation time is 2 hours.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.

Claims (10)

1. The method for cladding the surface of the alloy powder wire mesh after the composite rolling is characterized by comprising the following steps of:
step 1: preparation of wire mesh tape
Firstly, selecting the mesh number of a metal wire mesh according to the thickness requirement of a required cladding layer, and cutting out a metal wire mesh belt with required length and width according to the shape and the size of a substrate to be clad;
step 2: preparation of alloy powders
Selecting alloy powder with corresponding mesh number according to the mesh number of the selected wire mesh, mixing the alloy powder with the powder, and then placing the alloy powder into a powder mixer for powder mixing, and uniformly mixing the powder with different components;
step 3: alloy powder sieving
According to the thickness of the required powder layer, adjusting the powder box gap of the rolling powder feeding box, sieving the alloy powder after powder mixing, and removing unqualified powder particles to ensure the continuity of powder feeding in the rolling process;
step 4: preparation of alloy powder wire mesh strip blank
Rolling the prepared metal wire mesh belt and the alloy powder after mixing and sieving, uniformly distributing the alloy powder on the metal wire mesh belt and combining to obtain a required alloy powder wire mesh belt blank;
step 5: alloy powder fixed silk screen strip blank
Wrapping the alloy powder wire mesh strip blank on a substrate material to be clad, and fixing the alloy powder wire mesh strip blank on the substrate;
step 6: cladding and sintering
Melting, solidifying and covering the fixed alloy powder net belt blank on the surface of a base material, and cladding the metal solid surface after cladding is completed, wherein an adaptive cladding method is adopted in a targeted manner to realize metallurgical bonding between the alloy powder net belt blank and the base material, so that the aim of forming a wear-resistant coating on the surface of the base material is fulfilled;
step 7: rolling the cladding layer
After cladding is completed, the cladding layer is rolled, so that the structure of the cladding layer becomes more densified, and the comprehensive performance of the cladding layer is improved.
2. The method for cladding the surface of an alloy powder wire mesh after clad-rolling according to claim 1, wherein the method comprises the following steps of: the cladding is laser continuous local scanning sintering, plasma continuous local scanning sintering or integral sintering of a workpiece in a sintering furnace.
3. The method for cladding the surface of an alloy powder wire mesh after clad-rolling according to claim 1, wherein the method comprises the following steps of: the surface of the cladding metal solid is a plane, the outer surface of a cylinder or the inner surface of a metal part hole.
4. The method for cladding the surface of an alloy powder wire mesh after clad-rolling according to claim 1, wherein the method comprises the following steps of: the surface of the cladding metal solid is the surface of the gear metal part tooth, wherein the alloy powder wire mesh belt blank is firstly attached to the contour surface of the tooth, and the alloy powder wire mesh belt blank is fixed at the edge by laser welding.
5. The method for cladding the surface of an alloy powder wire mesh after clad-rolling according to claim 1, wherein the method comprises the following steps of: the wire mesh is a stainless steel wire mesh, and the alloy powder is 304 stainless steel-WC alloy formula powder.
6. The method for cladding the surface of an alloy powder wire mesh after clad-rolling according to claim 1, wherein the method comprises the following steps of: the metal wire mesh is a red copper wire mesh, and the alloy powder is Cu-WC alloy composite formula powder.
7. The method for cladding the surface of an alloy powder wire mesh after clad-rolling according to claim 1, wherein the method comprises the following steps of: the thickness of the alloy powder silk screen belt blank body is 0.1-2.0mm.
8. The method for cladding the surface of an alloy powder wire mesh after clad-rolling according to claim 1, wherein the method comprises the following steps of: the alloy powder wire mesh strip body can be coated on the outer surface of a cylindrical material, fixed by using an adhesive tape, coated with a layer of mica paper or graphite paper, locked by using a wide lock hoop and placed into a vacuum sintering furnace for sintering.
9. The method for cladding the surface of an alloy powder wire mesh after clad-rolling according to claim 1, wherein the method comprises the following steps of: the alloy powder is a hard alloy formula powder or a titanium alloy powder.
10. The method for cladding the surface of an alloy powder wire mesh after clad-rolling according to claim 1, wherein the method comprises the following steps of: the cladding sintering environment is vacuum or protective atmosphere.
CN202310141820.1A 2023-02-21 2023-02-21 Method for cladding surface of alloy powder wire mesh after composite rolling Pending CN116288328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310141820.1A CN116288328A (en) 2023-02-21 2023-02-21 Method for cladding surface of alloy powder wire mesh after composite rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310141820.1A CN116288328A (en) 2023-02-21 2023-02-21 Method for cladding surface of alloy powder wire mesh after composite rolling

Publications (1)

Publication Number Publication Date
CN116288328A true CN116288328A (en) 2023-06-23

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Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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