CN102513520A - Method for preparing heat-fatigue-resistance wear-resistance laminated particle reinforced composite material - Google Patents

Abstract

The invention provides a method for preparing a heat-fatigue-resistant wear-resistant layered particle-reinforced composite material. By uniformly mixing nickel-based self-fluxing alloy powder and hard ceramic particles, adding a binder to make a prefabricated block, and then using conventional Sand casting or lost foam casting, after melting the base metal material to the pouring temperature, it is poured into the cavity with the obtained prefabricated block, cooled and solidified at room temperature, and after sand cleaning treatment, a layered mold with heat fatigue resistance is obtained. A wear-resistant layered particle-reinforced composite material composed of a composite wear-resistant layer, a metallurgical transition layer, and a base metal layer. The composite preparation process of the present invention has strong controllability, simple operation, high yield, high overall performance, stable production quality, good metallurgical bonding between the thermal fatigue-resistant layered composite wear-resistant layer and the base metal layer, and can be widely used In mining, electric power, metallurgy, coal, building materials and other thermal fatigue and wear resistance fields, it is convenient for industrialized large-scale production.

Description

A preparation method of wear-resistant layered particle-reinforced composite material resistant to thermal fatigue

the

technical field

The invention belongs to the technical field of metal-based composite materials, and in particular relates to a preparation method of a heat-fatigue-resistant wear-resistant layered particle-reinforced composite material.

Background technique

The development of modern industry has higher and higher requirements on the wear resistance of materials. Mining machinery, engineering machinery, agricultural machinery and various crushing and grinding machinery are used in metallurgy, mining, building materials, electric power, chemical industry, coal and agriculture. , The wearing parts of these mechanical equipment are subject to the wear and tear of various materials and grinding bodies such as sand, ore, soil, etc., and consume a large amount of metal every year. According to incomplete statistics, 1/3 to 1/2 of energy consumption is related to friction and wear. For materials, about 80% of the failures of parts are caused by wear, and about 50% of them fail due to abrasive wear. According to statistics, the wear-resistant iron and iron parts used in abrasive wear conditions in my country consume more than 200 yuan per year. tons. Therefore, it is extremely important to develop a new material that can have a longer service life under wear conditions.

There are harsh working environments in many areas of the industry, and the working parts are required to have comprehensive properties of wear and heat resistance or wear and corrosion resistance. Therefore, materials with a single performance can no longer meet the needs of working conditions. Composite materials have excellent comprehensive properties because they combine two or more materials with different properties through physical or chemical methods to give full play to their respective advantages. In recent years, a lot of work has been done on the research on the preparation process of composite materials, and a variety of processes have been developed. When these processes are used to manufacture non-ferrous metal composite materials, because most non-ferrous metals have low melting points and have good wettability with many reinforcing particles, good results have been achieved. For example, the SiC reinforced aluminum alloy composite material makes the piston, and the service life is greatly improved. However, for ferrous metals, due to the high melting point and complex metallurgical reactions between them, how to conveniently add reinforced particles to the ferrous metal liquid has always been a difficult problem, which seriously affects the industrialization process of particle-reinforced iron-iron-based composite materials . Over the years, the process research on particle reinforced iron-iron matrix composites has been one of the major topics in composites research, and some achievements have been made. The patent (publication number 1080221) introduces a casting method for preparing particle-reinforced wear-resistant composite materials. The process steps are: first make a casting mold, and at the same time prepare a lost foam with a negative size deviation, and then put the lost foam into the mold In this way, a void is formed between the lost foam and the mold. Fill the gaps with hard particles, and then vacuumize and pour the box together to form a wear-resistant material containing hard particles on the surface. The process of this method is complicated, the advantages of the lost foam negative pressure casting process cannot be well utilized, the production efficiency is low, and the thickness and quality of the composite layer are difficult to guarantee. CN1383945A discloses a method for preparing a particle-reinforced composite material. Its process steps are: firstly make a foam plastic mold, and at the position where the composite material needs to be made in the casting, the mold is made into two parts, one of which is formed with a groove Then fill the groove with the mixed reinforcing particles, then bond the two parts of the mold together, paint and dry the shape, and finally vacuum pour. This method is more complicated to prepare and is not suitable for the needs of actual production. CN101053898A has introduced a kind of method for the vacuum solid mold infiltration of preparing particle-reinforced metal-matrix surface composite material, and this method is to prepare the reinforced particle into the prefabricated block that adapts to the shape of the wear-resistant surface required by the composite material, and fix it at the required The alloyed foam pattern surface is then molded and poured in a casting process. CN1128297A discloses a kind of partial composite material and its manufacture method, it is to mix ceramic particle, organic binder and common carbon steel base, heat-resistant steel base or nickel base powder, press into the prefabricated block of required shape, set In the part of the casting mold that needs to be strengthened, it is enough to pour metal. The above two inventions are similar to the present invention, and the biggest difference is that the composite materials made by the above two methods are not resistant to thermal fatigue. Service life; CN101422814A discloses a preparation method of a local composite wear-resistant material, which uses high-alloy powder core tube wire, and cuts, rolls or superimposes a similar structure according to the shape of the workpiece surface; according to the casting process, the The prepared high-alloy powder core tube wire is pre-embedded in the sand mold cavity, and the base metal material is smelted and poured to obtain the required composite material. The disadvantage of this method is that it is easy to form slag inclusion defects, the process controllability is poor when used in actual production, and it is not suitable for large-scale industrial production.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a method for preparing a wear-resistant layered particle-reinforced composite material that is resistant to thermal fatigue, and to prepare a high performance composites.

The present invention is achieved through the following technical solutions: a method for preparing a heat-fatigue-resistant wear-resistant layered particle-reinforced composite material, through the following steps:

(1) Mix the nickel-based self-fluxing alloy powder and hard ceramic particles evenly, add a binder to make a prefabricated block, wherein the volume fraction of the nickel-based self-fluxing alloy powder accounts for 5-25% of the prefabricated block; bonding The volume fraction of the agent in the prefabricated block is 2-4%;

(2) Using conventional sand casting or lost foam casting, and then melting the base metal material to the pouring temperature, pouring it into the cavity with the prefabricated block obtained in step (1), cooling and solidifying at room temperature, and cleaning the sand. That is, a wear-resistant layered particle-reinforced composite material composed of a heat-fatigue-resistant layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer is obtained.

The hard ceramic particles in the step (1) are one or more of silicon carbide, tungsten carbide, silicon nitride, and titanium nitride; when there are two or more kinds of hard ceramic particles, various Hard ceramic particles have the same particle size.

The particle size of the hard ceramic particles in the step (1) is -40-+80 mesh.

The nickel-based self-fluxing alloy powder in the step (1) is Ni25A, Ni25B, Ni35A, Ni45A, Ni55A, Ni60B, Ni60CuMo, Ni60CuMoW, Ni65, Ni25WC35, Ni6025WC, Ni6035WC or Ni6040WC.

The particle size of the nickel-based self-fluxing alloy powder in the step (1) is -150-+200 mesh.

The binder in the step (1) is polyvinyl alcohol (PVA) or water glass.

The sand mold casting in the step (2) is to pre-embed the prefabricated block in the sand mold cavity made according to the requirements of the casting process, and then pour it.

The sand mold is made of resin sand or water glass sand, and the pouring riser is made according to the casting process.

The lost foam casting in the step (2) is to make a gasifiable foam model by cutting or foaming according to the shape and structure of the wear-resistant parts, and coat the prefabricated blocks on the wear-resistant parts to withstand thermal cycles and wear surface, and pouring.

The foam model of the lost foam is made of polystyrene (EPS) or polymethyl methacrylate (PMMA).

The base metal material in the step (2) is ordinary carbon steel, alloy steel or high manganese steel.

Compared with the prior art, the present invention has the following beneficial effects:

1. Due to the high hardness of silicon carbide, tungsten carbide, silicon nitride, titanium nitride and other ceramic particles, which are generally 8 to 10 times the hardness of traditional metal wear-resistant materials, after being compounded on the surface of the guide plate, it can become Good anti-wear hard phase, to resist the cutting and chiseling of the guide plate when the material moves on the surface of the guide plate, and improve the service life of the guide plate, which is 3 to 5 times higher than that of the ordinary guide plate.

2. Since the nickel-based self-fluxing alloy powder has good high-temperature performance, adding an appropriate volume fraction of the powder can improve the structure of the matrix in the composite layer of the composite material guide plate, significantly improve the thermal fatigue resistance, and provide good protection for the ceramic particles. The supporting function avoids the shedding of ceramic particles in the composite material composite layer during use.

3. The thickness of the composite layer can be freely designed in the range of 2-6mm according to the actual working conditions, so as to control the production cost of the wear-resistant parts that need to be used in the hot and cold working conditions, and obtain a high cost performance .

4. The composite preparation process of the present invention is highly controllable, easy to operate, high in yield, high in overall performance, stable in production quality, and has a good metallurgical bond between the heat-fatigue-resistant layered composite wear-resistant layer and the base metal layer, which can Widely used in mining, electric power, metallurgy, coal, building materials and other thermal fatigue and wear resistance fields, it is convenient for large-scale industrial production.

Description of drawings

Fig. 1 is the pouring schematic diagram of embodiment 1 hammer head preparation process;

Fig. 2 is the sectional structure schematic diagram of the composite material tup of gained of embodiment 1;

Fig. 3 is the metallographic structure figure before embodiment 1 gained composite hammer head heat cycle;

Fig. 4 is the metallographic structure diagram of embodiment 1 gained composite material hammer thermal cycle 60 times;

Fig. 5 is a partially enlarged view of area A in Fig. 2 .

In the figure, 1 is a prefabricated block, 2 is sand for molding, 3 is a cavity, 4 is a base metal, and 5 is a composite layer.

Detailed ways

The present invention will be described in further detail below through the embodiments and in conjunction with the accompanying drawings.

Example 1

(1) Mix Ni6025WC powder with a particle size of 150 mesh and tungsten carbide particles with a particle size of -40 to +60 mesh evenly, add polyvinyl alcohol (PVA) to make a prefabricated block (label 1 in Figure 1), among which, The volume fraction of nickel-based self-fluxing alloy powder in the prefabricated block is 15%; the volume fraction of the binder in the prefabricated block is 2%;

(2) Adopt conventional lost foam casting, use the cutting method according to the shape and structure of the wear-resistant parts, use a gasifiable hammer head foam model made of polystyrene (EPS), and coat the prefabricated blocks on the wear-resistant parts to withstand heat Circulation and wear on the surface, and then melting the alloy steel Cr15 high chromium steel to the pouring temperature of 1580 ° C, pouring it into the cavity with the prefabricated block obtained in step (1), cooling and solidifying at room temperature, and cleaning the sand to obtain The wear-resistant layered particle-reinforced composite material hammer head is composed of a thermal fatigue-resistant layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer (see Figure 2).

The thermal shock sample was cut from the hammer head, the metallographic structure of the sample before thermal shock is shown in Figure 3, and then the sample was subjected to 60 thermal cycles, the metallographic structure at the same position is shown in Figure 4 Show. It shows that the material has no fatal cracks affecting its performance under the conditions of severe cooling and heating.

Example 2

(1) Mix Ni25A powder with a particle size of 180 mesh and silicon carbide and tungsten carbide particles with a particle size of 40 mesh evenly, add polyvinyl alcohol (PVA) to make a prefabricated block, in which the nickel-based self-fluxing alloy powder accounts for the prefabricated block The volume fraction of the binder is 10%; the volume fraction of the binder in the prefabricated block is 2%;

(2) Using conventional sand casting, the prefabricated block is pre-embedded in the hammerhead sand mold cavity made of resin sand according to the casting process requirements, and then high carbon steel (ordinary carbon steel) is smelted to a pouring temperature of 1580 °C, and then Pour into the cavity with the prefabricated block obtained in step (1), cool and solidify at room temperature, and after sand cleaning treatment, a heat-resistant fatigue-resistant layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer are obtained. Grinding layered particle reinforced composite hammer.

Example 3

(1) Mix Ni25B powder with a particle size of 200 mesh and silicon carbide and tungsten carbide particles with a particle size of 60 mesh evenly, add polyvinyl alcohol (PVA) to make a prefabricated block, in which the nickel-based self-fluxing alloy powder accounts for the prefabricated block The volume fraction of the prefabricated block is 15%; the volume fraction of the binder in the prefabricated block is 2%;

(2) Using conventional sand casting, the prefabricated block is pre-embedded in the hammerhead sand mold cavity made of water glass sand according to the casting process requirements, and then the high carbon steel (ordinary carbon steel) is melted to the pouring temperature, and then poured Put it into the cavity with the prefabricated block obtained in step (1), cool and solidify at room temperature, and after sand cleaning treatment, a wear-resistant layer composed of a thermal fatigue-resistant layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer is obtained. Layered particle reinforced composite hammerhead.

Example 4

(1) Mix Ni35A powder with a particle size of -160 mesh and tungsten carbide particles with a particle size of -60 to +80 mesh evenly, add polyvinyl alcohol (PVA) to make a prefabricated block, in which nickel-based self-fluxing alloy powder accounts for The volume fraction of the prefabricated block is 20%; the volume fraction of the binder in the prefabricated block is 3%;

(2) The lost foam casting is adopted, and the foaming method is used according to the shape and structure of the wear-resistant parts. The gasifiable foam model made of polymethyl methacrylate (PMMA) is used to coat the prefabricated blocks on the wear-resistant parts. After heat cycle and worn surface, after melting alloy steel Cr15 high chromium steel to pouring temperature, it is poured into the cavity with the prefabricated block obtained in step (1), cooled and solidified at room temperature, and sand cleaning treatment is performed to obtain A wear-resistant layered particle-reinforced composite material composed of a heat-fatigue-resistant layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer.

Example 5

(1) Mix Ni45A powder with a particle size of -150 to +170 mesh and tungsten carbide, silicon nitride and titanium nitride particles with a particle size of 80 mesh evenly, add water glass, and make a prefabricated block, in which the nickel-based self-fluxing The volume fraction of the alloy powder in the prefabricated block is 25%; the volume fraction of the binder in the prefabricated block is 4%;

(2) Conventional lost foam casting is adopted, and the foaming method is used according to the shape and structure of the wear-resistant parts. A gasifiable foam model made of polystyrene (EPS) is used to coat the prefabricated blocks on the wear-resistant parts to withstand thermal cycles. and the worn surface, after melting the alloy steel Cr15 high chromium steel to the pouring temperature, it is poured into the cavity with the prefabricated block obtained in step (1), cooled and solidified at room temperature, and the heat-resistant A wear-resistant layered particle-reinforced composite material composed of a fatigue layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer.

Example 6

(1) Mix Ni55A powder with a particle size of 180 mesh and titanium nitride particles with a particle size of 40 mesh evenly, add polyvinyl alcohol (PVA) to make a prefabricated block, in which the nickel-based self-fluxing alloy powder accounts for the volume of the prefabricated block The fraction is 5%; the volume fraction of the binder in the prefabricated block is 2%;

(2) Using conventional sand casting, the prefabricated block is pre-embedded in the hammerhead sand mold cavity made of resin sand according to the casting process requirements, and then the alloy steel Cr15 high chromium steel is melted to the pouring temperature, and then poured into the In the cavity of the prefabricated block obtained in step (1), cool and solidify at room temperature, and after sand cleaning treatment, wear-resistant layered particles composed of a layered composite wear-resistant layer resistant to thermal fatigue, a metallurgical transition layer, and a base metal layer are obtained Reinforced composite hammer head.

Example 7

(1) Mix Ni60B powder with a particle size of 200 mesh and silicon carbide and tungsten carbide particles with a particle size of 60 mesh evenly, add polyvinyl alcohol (PVA) to make a prefabricated block, in which the nickel-based self-fluxing alloy powder accounts for the prefabricated block The volume fraction of the prefabricated block is 15%; the volume fraction of the binder in the prefabricated block is 2%;

(2) Using conventional sand casting, the prefabricated block is pre-embedded in the hammer head sand mold cavity made of water glass sand according to the casting process requirements, and then smelted 40Cr low alloy steel to the pouring temperature, pouring it into the step (1) In the cavity of the obtained prefabricated block, it is cooled and solidified at room temperature, and after sand cleaning treatment, a wear-resistant layered particle reinforcement composed of a thermal fatigue-resistant layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer is obtained. Composite Hammer.

Example 8

(1) Mix Ni60CuMo powder with a particle size of -160 mesh and tungsten carbide particles with a particle size of -60 to +80 mesh evenly, add polyvinyl alcohol (PVA) to make a prefabricated block, in which nickel-based self-fluxing alloy powder accounts for The volume fraction of the prefabricated block is 22%; the volume fraction of the binder in the prefabricated block is 3%;

(2) The lost foam casting is adopted, and the foaming method is used according to the shape and structure of the wear-resistant parts. The gasifiable foam model made of polymethyl methacrylate (PMMA) is used to coat the prefabricated blocks on the wear-resistant parts. After heat cycle and worn surface, smelt 40Cr low-alloy steel to pouring temperature of 1580°C, then pour it into the cavity with the prefabricated block obtained in step (1), cool and solidify at room temperature, and perform sand cleaning treatment to obtain A wear-resistant layered particle-reinforced composite material composed of a heat-fatigue-resistant layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer.

Example 9

(1) Mix Ni60CuMoW powder with a particle size of -150 to +170 mesh and tungsten carbide, silicon nitride and titanium nitride particles with a particle size of 80 mesh evenly, add water glass to make a prefabricated block, in which the nickel-based self-melting The volume fraction of the alloy powder in the prefabricated block is 25%; the volume fraction of the binder in the prefabricated block is 4%;

(2) Adopt conventional lost foam casting, use the foaming method according to the shape and structure of the wear-resistant parts, use polystyrene (EPS) to make a gasifiable guide plate foam model, and coat the prefabricated blocks on the wear-resistant parts On the surface that is subjected to heat cycle and wear, after melting the high manganese steel to the pouring temperature, it is poured into the cavity with the prefabricated block obtained in step (1), cooled and solidified at room temperature, and after sand cleaning, the heat-resistant A wear-resistant layered particle-reinforced composite material guide plate composed of a fatigue layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer.

Example 10

(1) Mix Ni65 powder with a particle size of 180 mesh and titanium nitride particles with a particle size of 40 mesh evenly, add polyvinyl alcohol (PVA) to make a prefabricated block, in which the nickel-based self-fluxing alloy powder accounts for the volume of the prefabricated block The fraction is 5%; the volume fraction of the binder in the prefabricated block is 2%;

(2) Using conventional sand casting, the prefabricated block is pre-embedded in the sand mold cavity of the guide plate made of resin sand according to the casting process requirements, and then the high manganese steel is melted to the pouring temperature, and then it is poured into the step ( 1) In the cavity of the obtained prefabricated block, it is cooled and solidified at room temperature, and after sand cleaning treatment, a wear-resistant layered particle-reinforced composite composed of a thermal fatigue-resistant layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer is obtained. Material guides.

Example 11

(1) Mix Ni25WC35 powder with a particle size of 200 mesh and silicon carbide and tungsten carbide particles with a particle size of 60 mesh evenly, add polyvinyl alcohol (PVA) to make a prefabricated block, in which the nickel-based self-fluxing alloy powder accounts for the prefabricated block The volume fraction of the prefabricated block is 15%; the volume fraction of the binder in the prefabricated block is 2%;

(2) Using conventional sand casting, the prefabricated block is pre-embedded in the hammerhead sand mold cavity made of water glass sand according to the casting process requirements, and then the high carbon steel (ordinary carbon steel) is melted to the pouring temperature, and then poured Put it into the cavity with the prefabricated block obtained in step (1), cool and solidify at room temperature, and after sand cleaning treatment, a wear-resistant layer composed of a thermal fatigue-resistant layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer is obtained. Layered particle reinforced composite hammerhead.

Example 12

(1) Mix Ni6035WC powder with a particle size of -150～+170 mesh and tungsten carbide, silicon nitride and titanium nitride particles with a particle size of 80 mesh evenly, add water glass to make a prefabricated block, in which the nickel-based self-melting The volume fraction of the alloy powder in the prefabricated block is 25%; the volume fraction of the binder in the prefabricated block is 4%;

(2) Adopt conventional lost foam casting, use the foaming method according to the shape and structure of the wear-resistant parts, use polystyrene (EPS) to make a gasifiable guide plate foam model, and coat the prefabricated blocks on the wear-resistant parts The surface subjected to heat cycle and wear is smelted with high carbon steel (ordinary carbon steel) to the pouring temperature, and then poured into the cavity with the prefabricated block obtained in step (1), cooled and solidified at room temperature, and sand-cleaned. That is, a wear-resistant layered particle-reinforced composite material guide plate composed of a heat-fatigue-resistant layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer is obtained.

Example 13

(1) Mix Ni6040WC powder with a particle size of 200 mesh and silicon carbide and tungsten carbide particles with a particle size of 60 mesh evenly, add polyvinyl alcohol (PVA) to make a prefabricated block, in which the nickel-based self-fluxing alloy powder accounts for the prefabricated block The volume fraction of the prefabricated block is 15%; the volume fraction of the binder in the prefabricated block is 2%;

(2) Using conventional sand casting, the prefabricated block is pre-embedded in the hammer head sand mold cavity made of water glass sand according to the casting process requirements, and then smelted 40Cr low alloy steel to the pouring temperature, pouring it into the step (1) In the cavity of the obtained prefabricated block, it is cooled and solidified at room temperature, and after sand cleaning treatment, a wear-resistant layered particle reinforcement composed of a thermal fatigue-resistant layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer is obtained. Composite Hammer.

Claims (9)

1. A preparation method of a heat-resistant wear-resistant layered particle-reinforced composite material, characterized in that through the following steps: (1) Mix the nickel-based self-fluxing alloy powder and hard ceramic particles evenly, add a binder to make a prefabricated block, wherein the volume fraction of the nickel-based self-fluxing alloy powder accounts for 5-25% of the prefabricated block; bonding The volume fraction of the agent in the prefabricated block is 2-4%; (2) Using conventional sand casting or lost foam casting, and then melting the base metal material to the pouring temperature, pouring it into the cavity with the prefabricated block obtained in step (1), cooling and solidifying at room temperature, and cleaning the sand. That is, a wear-resistant layered particle-reinforced composite material composed of a heat-fatigue-resistant layered composite wear-resistant layer, a metallurgical transition layer, and a base metal layer is obtained. 2. The preparation method of thermal fatigue-resistant wear-resistant layered particle-reinforced composite material according to claim 1, characterized in that: the hard ceramic particles in the step (1) are silicon carbide, tungsten carbide, silicon nitride , titanium nitride or any several kinds; when there are two or more kinds of hard ceramic particles, the particle sizes of various hard ceramic particles are the same. 3. The method for preparing a thermal fatigue-resistant wear-resistant layered particle-reinforced composite material according to claim 1, characterized in that: the particle size of the hard ceramic particles in the step (1) is -40 to +80 mesh . 4. The preparation method of thermal fatigue-resistant wear-resistant layered particle-reinforced composite material according to claim 1, characterized in that: the nickel-based self-fluxing alloy powder in the step (1) is Ni25A, Ni25B, Ni35A, Ni45A , Ni55A, Ni60B, Ni60CuMo, Ni60CuMoW, Ni65, Ni25WC35, Ni6025WC, Ni6035WC or Ni6040WC. 5. The preparation method of thermal fatigue-resistant wear-resistant layered particle-reinforced composite material according to claim 1, characterized in that: the particle size of the nickel-based self-fluxing alloy powder in the step (1) is -150～+ 200 mesh. 6 . The method for preparing a thermal fatigue-resistant wear-resistant layered particle-reinforced composite material according to claim 1 , wherein the binder in the step (1) is polyvinyl alcohol or water glass. 7. The preparation method of thermal fatigue-resistant wear-resistant layered particle-reinforced composite material according to claim 1, characterized in that: the sand casting in the step (2) is to pre-embed the prefabricated blocks in accordance with the casting process It is required to make the sand mold cavity, and then pour it. 8. The preparation method of thermal fatigue-resistant wear-resistant layered particle-reinforced composite material according to claim 1, characterized in that: the lost foam casting in the step (2) is used according to the shape and structure of wear-resistant parts The method of cutting or foaming is used to make a gasifiable foam model, and the prefabricated block is coated on the surface of the wear-resistant part that is subjected to thermal cycle and wear, and then poured. 9. The preparation method of thermal fatigue-resistant wear-resistant layered particle-reinforced composite material according to claim 1, characterized in that: the base metal material in the step (2) is ordinary carbon steel, alloy steel or high-grade manganese steel.

Images