CN107815682B - Method for preparing wear-resistant toughening coating on surface of high manganese steel - Google Patents
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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
- C23C24/106—Coating with metal alloys or metal elements only
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/78—Combined heat-treatments not provided for above
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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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
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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
Abstract
The invention discloses a method for preparing a wear-resistant toughening coating on the surface of high manganese steel, which is characterized by comprising the following steps: the method comprises the following steps: s1: pre-treating a substrate before cladding; s2: pre-treating powder before cladding; s3: cladding; s4: and (4) carrying out heat treatment after cladding. The invention adopts the plasma cladding technology, the solid solution treatment and the coating surface aging process to prepare the Fe-Ni-based alloy coating with high hardness, high wear resistance and high impact toughness, thereby not only improving the surface hardness and wear resistance of the base material, but also solving the problem that the traditional hard particle reinforced metal-based wear-resistant coating is easy to crack under the working conditions of medium-high stress and the like.
Description
Technical Field
The invention relates to a method for treating the surface of high manganese steel, in particular to a method for preparing a wear-resistant toughening coating on the surface of high manganese steel.
Background
Plasma cladding, also known as plasma spray welding, is a high energy beam surface modification technique for cladding alloy powder on the surface of a base metal by utilizing high heat generated by a plasma beam. Plasma cladding means that a tungsten electrode is used as a negative electrode, a cladding cavity is used as a positive electrode to form a non-transferred arc loop, rare gas (argon) is fed into the cavity at a constant speed, and partial electrons of partial atoms in gas molecules in the cavity are excited and dissociated to form plasma through current breakdown to form a non-transferred arc (small arc) between a nozzle and the tungsten electrode; then, a workpiece is connected with an anode and a tungsten electrode to form a new loop, a transfer arc (large arc) is formed between the workpiece and the tungsten electrode under the excitation of a low-voltage high-frequency power supply, and the large arc forms high-density plasma under the three effects of mechanical compression of a nozzle, thermal compression of high-pressure gas and magnetic compression caused by charged particles; the high-temperature plasma is used as a heat source, simultaneously, alloy powder is uniformly fed into the center of a plasma arc, the plasma gun finishes cladding in various shapes along with a PC control system, molten alloy powder and the surface of a substrate form a molten pool, and a high-performance cladding layer is formed along with rapid cooling of the substrate. The cladding layer has fine, compact and uniform structure, and the coating has no obvious cracks and pores. The bonding mode is firm metallurgical bonding.
In the technical field of surface modification, surface engineering technicians in various countries in the world deeply research surface cladding technology and laser cladding technology, so that the surface engineering technicians are widely applied and popularized. As can be seen from the technical comparison of the two (Table 1-1), the plasma cladding technology has obvious advantages and the cladding layer has higher quality; the equipment cost is lower; the operation environment is simpler and more convenient; the application range is wider.
TABLE 1-1 indexes of laser cladding technique and plasma cladding technique
Tab.1-1Indicators of the laser cladding and plasma cladding
The components of the surface cladding layer are mainly determined by the cladding material added during cladding. The design and selection of the cladding material are very important to the quality and performance of the surface cladding layer. Therefore, the development of special materials for surface cladding becomes the key point and the focus of the research of the surface cladding technology. So far, aiming at different service environments of cladding layers, the developed cladding material system covers a plurality of fields of abrasion resistance, corrosion resistance, oxidation resistance, erosion resistance and the like. Surface-deposited materials can be generally classified into self-fluxing alloy materials and metal matrix composites.
1. Self-fluxing alloy material
The self-fluxing alloy material mainly comprises three types of Fe base, Co base and Ni base. The powder contains Si, Bi and other elements with deoxidation and slagging functions, so that the alloy powder can be well protected in the cladding process, and the alloy material has the advantages of lower melting point, good fluidity and good wettability with matrix metal. Under the action of rapid solidification, the reinforcing phase and the second phase particles are dispersed in the cladding layer, so that the hardness and the wear resistance of the cladding layer can be greatly improved.
The Fe-based self-fluxing alloy material is the most widely applied self-fluxing alloy material, mainly contains Fe element and consists of alloy elements such as Cr, B, Si and the like. The addition of elements such as W, Mo and Cr can improve the high-temperature resistance of the cladding layer; the Ni element improves the crack resistance of the coating; the C and B elements are added to form carbide or boride refined grains in the cladding layer, so that the hardness and the wear resistance of the cladding layer are improved.
The Co-based self-fluxing alloy material is mainly formed by adding a small amount of alloy elements such as Si, B and the like on the basis of taking Co-Cr-W as an alloy system, has good wear resistance and high temperature performance, and is mainly applied to the industrial fields of electric power, metallurgy, sea, petrochemical industry and the like which have higher requirements on special performances such as corrosion resistance, wear resistance, high temperature resistance and the like of the surface of a workpiece.
The Ni-based self-fluxing alloy material is mainly divided into Ni-Cr-Si-B and Ni-B-Si. The addition of Si and B elements can be used as a deoxidizer and a self-fluxing agent to increase the wettability on one hand, and can be used for strengthening the cladding layer through dispersion strengthening and solid solution strengthening on the other hand; the addition of Cr element in alloy system can make the cladding layer have the solid solution strengthening action, and in addition, Cr can be combined with B, C to form hard phase to raise hardness and wear resistance of cladding layer
2. Metal matrix composite material
The metal-based composite material is formed by mixing or compounding two or more kinds of high-melting-point hard ceramic materials such as carbide, nitride, boride, oxide, silicide and the like with metal. In recent years, metal-based composite materials are developed, and the preparation of ceramic particle reinforced metal-based composite coatings on the surface of a metal matrix by using the metal-based composite materials as cladding materials and using a plasma cladding technology becomes a new research hotspot in the field of surface engineering. The metal-based ceramic cladding layer integrates the excellent characteristics of high strength, high hardness, wear resistance, corrosion resistance and the like of a ceramic reinforcing phase, the good plasticity and toughness of metal and the wettability of a reinforced metal base material, so that the cladding layer has the special properties of high strength, high hardness, heat resistance, corrosion resistance, wear resistance and the like.
The high manganese steel wear-resistant material obtains good wear-resistant characteristic due to the fact that the surface of the high manganese steel wear-resistant material is hardened in the extrusion and impact processes, and is always the main wear-resistant material in the industries of mining, railways and the like. However, under the working conditions of medium and low impact load or abrasive wear, the high-manganese steel cannot show high wear resistance due to insufficient surface impact energy caused by wear contact and cannot achieve sufficient work hardening, so that the service life of the high-manganese steel is influenced.
In order to improve the wear resistance of high manganese steel under low stress conditions, researchers take measures such as component adjustment, alloying, heat treatment process, modification treatment and the like to ensure that the high manganese steel has good wear resistance and impact resistance under high impact stress and is still relatively wear resistant under low stress conditions. Meanwhile, materials such as medium carbon alloy steel, high chromium cast iron and the like are developed at home and abroad in recent years to replace high manganese steel, but the use effect under complex working conditions is not ideal. The surface and core properties of the part are difficult to be compatible when the whole design treatment is carried out.
In order to prolong the service life of parts and improve the reliability of mechanical equipment, a great deal of research and exploration is carried out on the aspects of improving the surface performance of mechanical parts by materials and mechanical disciplines. Various high-hardness ceramic particles are added into the Fe-based, Ni-based and Co-based self-fluxing alloy powder, so that the wear resistance of the metal alloy coating can be obviously improved.
In the fields of metallurgy, mines, building materials and the like, some parts (such as crusher hammers) used under high impact force bear the impact, high-speed abrasion, extrusion and other effects of ores and the like in the service process, the service conditions are harsh and complex, the performance of the materials is very demanding, and the materials are not only required to have good wear resistance, but also required to have certain impact resistance. The metal-based wear-resistant coating enhanced by the high-hardness ceramic particles has the advantages of high hardness, good wear resistance and the like, but the shock resistance of the coating is poor, and the substrate is difficult to protect under the complex working conditions of impact, abrasive wear coupling and the like. Although nickel and cobalt based coatings have improved impact resistance compared to iron based coatings, they are expensive and difficult to popularize.
Disclosure of Invention
The invention aims to provide a method for preparing a wear-resistant toughening coating on the surface of high manganese steel, which saves more materials and energy and has lower equipment cost compared with the traditional method of adding alloy element for strengthening and heat treatment for strengthening.
The technical scheme adopted by the invention is as follows: a method for preparing a wear-resistant toughening coating on the surface of high manganese steel comprises the following steps:
s1: pre-treating a substrate before cladding;
s2: pre-treating powder before cladding;
s3: cladding;
s4: and (4) carrying out heat treatment after cladding.
S1: pre-treating a substrate before cladding: firstly, an oxide layer on the surface of a high manganese steel matrix is polished by using a grinding wheel or abrasive paper, then, oil stains on the surface of the high manganese steel matrix are cleaned by using alcohol acetone, and the matrix is preheated at the temperature of 200-300 ℃.
S2: pre-cladding powder pretreatment: screening Fe-Ni-based alloy powder with the size of 180-300 meshes, uniformly spreading the Fe-Ni-based alloy powder, putting the Fe-Ni-based alloy powder into a vacuum drying box, vacuumizing, adjusting the temperature to 80-105 ℃, and preserving the heat for 2-3 hours.
S3: cladding: respectively loading a high manganese steel matrix and Fe-Ni-based alloy powder into plasma cladding equipment, synchronously feeding the Fe-Ni-based alloy powder and synchronously protecting the Fe-Ni-based alloy powder by argon in the cladding process, wherein the cladding process parameters of the plasma cladding equipment are as follows: the current is 140-160A, the height of a nozzle is 10-14 mm, the powder feeding speed is 180-220 g/min, the powder feeding air flow is 4-6L/min, the large ion air flow is 4-6L/min, the small ion air flow is 4-6L/min, the scanning speed is 160-180 mm/min, and a coating with the width of 8-10 mm is obtained;
s4: heat treatment after cladding: the heat treatment comprises two steps of solid solution and aging, wherein the high manganese steel substrate and the coating are subjected to solid solution treatment by a high-temperature carbon tube furnace, the solid solution treatment process comprises the steps of heating along with the furnace, keeping the temperature at 815-830 ℃, keeping the temperature for 1-1.5 hours, and then cooling by water; and (3) carrying out aging treatment on the high manganese steel substrate and the coating through a muffle furnace, wherein the aging process comprises the steps of entering the muffle furnace at a temperature of 500-520 ℃, keeping the temperature for 3-4 hours, and carrying out air cooling.
Preferably, the Fe-Ni based alloy powder comprises the following components in percentage by mass: c is less than or equal to 0.03%, Ni: 18.00% -19.00%, Co: 8.50% -9.50%, Mo: 4.60% -5.20%, Si: 3.40-3.60%, Mn is less than or equal to 0.10%, Ti: 0.50-0.80%, Al: 0.05 to 0.15 percent of the total weight of the alloy, less than or equal to 0.01 percent of P, less than or equal to 0.01 percent of S and the balance of Fe.
Preferably, the rated power of the plasma cladding equipment is 20KW, and the rated cladding current is 220A.
Compared with the prior art, the invention has the beneficial effects that: (1) compared with the traditional method of adding alloy elements for strengthening and heat treatment for strengthening, the method saves more materials and energy and has lower equipment cost; the operation environment is simpler and more convenient, the pollution to the environment is smaller, the processing cycle is shorter, the labor productivity is higher (2) the treatment method of the invention has the advantages of concentrated plasma arc energy, high heat input, flexible process and good stability, and can accurately strengthen or repair any part of the part; (3) according to the treatment method disclosed by the invention, the obtained coating is compact in structure and can keep excellent metallurgical bonding with the metal base material; (4) the invention adopts the plasma cladding technology, Fe-Ni-based alloy is used as cladding coating material, and the Fe-Ni-based alloy coating with high hardness, high wear resistance and high impact toughness is prepared by the solid solution treatment and the coating surface aging process, thereby not only improving the surface hardness and wear resistance of the base material, but also solving the problem that the traditional hard particle reinforced metal-based wear-resistant coating is easy to crack under the working conditions of medium-high stress and the like.
Detailed Description
The technical scheme of the invention is further explained by combining specific examples.
Example 1
The Mn13 high manganese steel and Fe-Ni based alloy powder are processed according to the following operation steps:
s1: firstly, abrasive paper is used for polishing off an oxide layer on the surface of a high manganese steel matrix, then alcohol acetone is used for cleaning oil stains on the surface, and preheating is carried out at 300 ℃ before plasma cladding is carried out.
S2: and sieving the Fe-Ni-based alloy, and screening to obtain powder with the size distribution of 180-300 meshes. Then, the sieved powder was placed in a vacuum drying oven, the temperature was adjusted to 100 ℃ and the temperature was maintained for 2 hours.
S3: respectively loading Mn13 high manganese steel and Fe-Ni base alloy powder for cladding. The cladding technological parameters are as follows: the current is 140A, the height of the nozzle is 10mm, the powder feeding speed is 180g/min, the powder feeding air flow is 4L/min, the large ion air flow is 4L/min, the small ion air flow is 4L/min, and the scanning speed is 160mm/min, so that the coating with the width of about 10mm is obtained.
S4: after cooling, putting the cladding obtained sample into a high-temperature carbon tube furnace, adjusting the temperature to 820 ℃, heating the sample to 820 ℃ along with the furnace, keeping the temperature for 1 hour, cooling by water, and drying by blowing; and (3) adjusting the temperature of the muffle furnace to 500 ℃, putting the water-cooled and dried sample into the muffle furnace when the temperature is increased to 500 ℃, keeping the temperature for 4 hours, and air-cooling. The heat treatment comprises two steps of solid solution and aging. The solid solution of the cladding layer is to fully dissolve the excess phase into the solid solution to obtain a saturated solid solution, so that the preparation of the structure is made for the subsequent aging treatment; the aging treatment is to precipitate intermetallic compounds of Ni, Co, Mo, Ti and other alloy elements from the cladding layer structure to realize the strengthening and toughening of the coating.
Example 2
The Mn14 high manganese steel and Fe-Ni based alloy powder are processed according to the following operation steps:
s1: firstly, abrasive paper is used for polishing off an oxide layer on the surface of a high manganese steel matrix, then alcohol acetone is used for cleaning oil stains on the surface, and preheating is carried out at 300 ℃ before plasma cladding is carried out.
S2: and sieving the Fe-Ni-based alloy, and screening to obtain powder with the size distribution of 180-300 meshes. Then, the sieved powder was placed in a vacuum drying oven, the temperature was adjusted to 100 ℃ and the temperature was maintained for 2 hours.
S3: respectively loading Mn14 high manganese steel and Fe-Ni base alloy powder for cladding. The cladding technological parameters are as follows: the current is 160A, the height of the nozzle is 12mm, the powder feeding speed is 220g/min, the powder feeding air flow is 4L/min, the large ion air flow is 6L/min, the small ion air flow is 4L/min, and the scanning speed is 180mm/min, so that the coating with the width of about 10mm is obtained.
S4: and after cooling, putting the sample obtained by cladding into a high-temperature carbon tube furnace, adjusting the temperature to 820 ℃, heating to 820 ℃ along with the furnace, preserving the heat for 1 hour, cooling by water, and drying by blowing. And (3) adjusting the temperature of the muffle furnace to 500 ℃, putting the water-cooled and dried sample into the muffle furnace when the temperature is increased to 500 ℃, keeping the temperature for 4 hours, and air-cooling.
Example 3
The Mn15 high manganese steel and Fe-Ni based alloy powder are processed according to the following operation steps:
s1: firstly, abrasive paper is used for polishing off an oxide layer on the surface of a high manganese steel matrix, then alcohol acetone is used for cleaning oil stains on the surface, and preheating is carried out at 300 ℃ before plasma cladding is carried out.
S2: and sieving the Fe-Ni-based alloy, and screening to obtain powder with the size distribution of 180-300 meshes. Then, the sieved powder was placed in a vacuum drying oven, the temperature was adjusted to 100 ℃ and the temperature was maintained for 2 hours.
S3: respectively loading Mn15 high manganese steel and Fe-Ni base alloy powder for cladding. The cladding technological parameters are as follows: the current is 150A, the height of the nozzle is 13mm, the powder feeding speed is 200g/min, the powder feeding air flow is 5L/min, the large ion flow is 5L/min, the small ion flow is 5L/min, and the scanning speed is 170mm/min, so that the coating with the width of about 9mm is obtained.
S4: and after cooling, putting the sample obtained by cladding into a high-temperature carbon tube furnace, adjusting the temperature to 820 ℃, heating to 820 ℃ along with the furnace, preserving the heat for 1 hour, cooling by water, and drying by blowing. And (3) adjusting the temperature of the muffle furnace to 500 ℃, putting the water-cooled and dried sample into the muffle furnace when the temperature is increased to 500 ℃, keeping the temperature for 4 hours, and air-cooling.
Example 4
The Mn16 high manganese steel and Fe-Ni based alloy powder are processed according to the following operation steps:
s1: firstly, abrasive paper is used for polishing off an oxide layer on the surface of a high manganese steel matrix, then alcohol acetone is used for cleaning oil stains on the surface, and preheating is carried out at 300 ℃ before plasma cladding is carried out.
S2: and sieving the Fe-Ni-based alloy, and screening to obtain powder with the size distribution of 180-300 meshes. Then, the sieved powder was placed in a vacuum drying oven, the temperature was adjusted to 100 ℃ and the temperature was maintained for 2 hours.
S3: respectively loading Mn16 high manganese steel and Fe-Ni base alloy powder for cladding. The cladding technological parameters are as follows: the current is 160A, the height of the nozzle is 12mm, the powder feeding speed is 220g/min, the powder feeding air flow is 4L/min, the large ion air flow is 6L/min, the small ion air flow is 4L/min, and the scanning speed is 180mm/min, so that the coating with the width of about 10mm is obtained.
S4: and after cooling, putting the sample obtained by cladding into a high-temperature carbon tube furnace, adjusting the temperature to 820 ℃, heating to 820 ℃ along with the furnace, preserving the heat for 1 hour, cooling by water, and drying by blowing. And (3) adjusting the temperature of the muffle furnace to 500 ℃, putting the water-cooled and dried sample into the muffle furnace when the temperature is increased to 500 ℃, keeping the temperature for 4 hours, and air-cooling.
The Fe-Ni-based alloy coating test piece obtained by the process is subjected to performance test, and the result is shown in the attached table.
Attached table 1: the performance test result (comparison matrix) of the Fe-Ni-based alloy coating test piece obtained by the method of the invention
Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (2)
1. A method for preparing a wear-resistant toughening coating on the surface of high manganese steel is characterized by comprising the following steps: the method comprises the following steps:
s1: pre-treating a substrate before cladding; firstly, polishing an oxide layer on the surface of a high manganese steel matrix by using a grinding wheel or abrasive paper, then cleaning oil stains on the surface by using alcohol acetone, and preheating the matrix at the preheating temperature of 200-300 ℃;
s2: pre-treating powder before cladding; screening Fe-Ni-based alloy powder with the size of 180-300 meshes, uniformly spreading the Fe-Ni-based alloy powder, putting the Fe-Ni-based alloy powder into a vacuum drying box, vacuumizing, adjusting the temperature to 80-105 ℃, and preserving the heat for 2-3 hours;
wherein the Fe-Ni-based alloy powder comprises the following components in percentage by mass: c is less than or equal to 0.03%, Ni: 18.00% -19.00%, Co: 8.50% -9.50%, Mo: 4.60% -5.20%, Si: 3.40-3.60%, Mn is less than or equal to 0.10%, Ti: 0.50-0.80%, Al: 0.05-0.15 percent of Fe, less than or equal to 0.01 percent of P, less than or equal to 0.01 percent of S and the balance of Fe;
s3: cladding; respectively loading a high manganese steel matrix and Fe-Ni-based alloy powder into plasma cladding equipment, synchronously feeding the Fe-Ni-based alloy powder and synchronously protecting the Fe-Ni-based alloy powder by argon in the cladding process, wherein the cladding process parameters of the plasma cladding equipment are as follows: the current is 140-160A, the height of a nozzle is 10-14 mm, the powder feeding speed is 180-220 g/min, the powder feeding air flow is 4-6L/min, the large ion air flow is 4-6L/min, the small ion air flow is 4-6L/min, the scanning speed is 160-180 mm/min, and a coating with the width of 8-10 mm is obtained;
s4: heat treatment after cladding: the heat treatment comprises two steps of solid solution and aging, wherein the high manganese steel substrate and the coating are subjected to solid solution treatment by a high-temperature carbon tube furnace, the solid solution treatment process comprises the steps of heating along with the furnace, keeping the temperature at 815-830 ℃, keeping the temperature for 1-1.5 hours, and then cooling by water; and (3) carrying out aging treatment on the high manganese steel substrate and the coating through a muffle furnace, wherein the aging process comprises the steps of entering the muffle furnace at a temperature of 500-520 ℃, keeping the temperature for 3-4 hours, and carrying out air cooling to prepare the wear-resistant toughening coating on the surface of the high manganese steel.
2. The method for preparing the wear-resistant toughening coating on the surface of the high manganese steel according to claim 1, wherein the method comprises the following steps: in the step S3, the rated power of the plasma cladding apparatus is 20KW, and the rated cladding current is 220A.
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