CN102319894A - Abrasion-resistant alloy cake containing ceramic particles and application thereof - Google Patents

Abstract

The invention relates to a wear-resistant alloy powder block containing ceramic particles. The wear-resistant alloy powder block containing ceramic particles contains metal and alloy powder, ceramic particles and a binder. In parts by weight, the metal and alloy powder is 50~ 80 parts, 20 to 50 parts of ceramic particles, 5 to 15 parts of binder, are manufactured and shaped by powder block pressing equipment; the particle size of the ceramic particles is 0.5 to 3 mm; the application of the wear-resistant alloy powder block of the present invention adopts melting The coating method melts the wear-resistant alloy powder block on the metal substrate to form a wear-resistant layer, and the wear-resistant layer and the metal substrate are metallurgically bonded. The melting method of the wear-resistant alloy powder blocks adopts plasma arc, tungsten argon arc, and high-frequency induction cladding methods. The prepared wear-resistant layer is composed of alloy phase and ceramic particle phase, which maintains the strength of the alloy material. Toughness and excellent properties of ceramic materials, the wear-resistant alloy powder block of the present invention has the characteristics of high wear resistance.

Description

Wear-resistant alloy powder containing ceramic particles and its application

technical field

The invention relates to a wear-resistant material, in particular to a wear-resistant alloy powder block material containing ceramic particles and its application.

Background technique

The purpose of wear-resistant welding materials is to improve the wear-resistant service life of the product. It is used for the modification of the surface of mechanical products to improve the wear-resistant life, or for the repair of the surface wear of old products to restore the size and remanufacture. Wear-resistant welding materials mainly include four types: wear-resistant welding rods (including coated electrodes and tubular electrodes), wear-resistant welding wires (including solid welding wires and flux-cored welding wires), wear-resistant alloy powders, and wear-resistant alloy powder blocks. The present invention belongs to Wear-resistant alloy powder block type.

Wear-resistant welding rods are made into welding rod products by welding rod coating machine or manual rubbing method, and the wear-resistant layer is prepared by manual surfacing welding. Due to the flexible and convenient manual surfacing welding operation, the variety of wear-resistant welding rods is complete and the selection range is wide, so it is Wear-resistant welding is one of the most widely used and most mature materials. Wear-resistant welding wire is made of wire products through a wire drawing device. The wear-resistant layer is mainly prepared by automatic surfacing welding. Due to the high production efficiency of automatic operations, the wear-resistant welding wire material has been developed rapidly, and the products gradually tend to be multi-variety and serialized. . Wear-resistant alloy powder is a kind of powder material, which is mainly used as raw material for metallurgical materials, casting materials and welding materials. With the advancement of welding technology, wear-resistant alloy powder is directly used as a welding material such as plasma powder pile In welding, it is widely used in the field of powder thermal spraying technology to prepare wear-resistant coatings. The wear-resistant alloy powder block welding material is made by pressing the prepared alloy powder material into a block material product by mechanical pressing, and the wear-resistant layer is prepared by melting and surfacing.

According to the comparison of the characteristics of the above-mentioned wear-resistant welding materials, it can be seen that the wear-resistant alloy powder block surfacing welding material is easier to prepare than the surfacing welding rod and surfacing welding wire, the composition is easy to adjust, the manufacturing process is simple, the production cost is low, the operation is flexible and convenient, and the surfacing welding efficiency is high. High advantage, so it is a kind of wear-resistant welding material with great development potential at present. Currently published reports include: Chinese Patent Application No. 200810111113 discloses a method for making agglomerates with ferroalloy powder, which belongs to the technology of using reclaimed ferroalloy powder to press into agglomerates in steelmaking and casting. Add binder, curing agent, hardener and water to the ferrosilicon powder, ferrosilicon manganese powder and ferromanganese powder below 6mm produced during the crushing and transportation of ferroalloy ingots. After dry mixing and wet mixing, they are punched into blocks. The alloy ingots obtained after drying meet the original iron alloy standards in terms of physical properties and chemical composition, and are suitable for deoxidation and alloying of converters, electric furnaces and iron furnaces, replacing original iron alloys, reducing production costs, saving energy, and increasing economic benefits. The technology is easy to master, simple in equipment, low in investment and quick in effect, and is also suitable for rare earth alloy powder briquetting. The Chinese patent with the patent application number 200710014452 discloses an alloy powder block for surfacing welding. The alloy powder block is made of metal and iron alloy powder, binder, and plasticizer, wherein, in terms of mass ratio, metal and Ferroalloy powder: binder: plasticizer is 100:5～15:0～8; the alloy powder block is in any geometric shape, wherein the size, length and surface shape of the powder block are arbitrarily determined according to the needs of the surfacing welding surface , but when the alloy powder blocks are arranged on the surface to be surfacing, the thickness of the edge of the powder block at the joint is 0-0.1 mm. Through the design of the cross-sectional geometry of the alloy powder block, this invention makes it easier for the arc to pass through the difficult-to-melt alloy powder block to melt the base material, and the melting of the base material accelerates the melting of the alloy powder block, which solves the problem that the alloy powder block is difficult to melt The problem of being easily blown away by the plasma flow force of the arc greatly improves the production efficiency. The Chinese patent with the patent application number 200710014451 discloses a sandwich alloy powder block for surfacing welding and its preparation method and application. It is made of a coating and a metal core. The sandwich alloy powder block is in any geometric shape; The coating is made of metal and ferroalloy powders, adhesives, and plasticizers required by the surfacing metal; the metal core is a steel core for the production of welding rods or a steel strip for the production of flux-cored wires. The spacing is 0-3mm, symmetrically distributed in the geometric center of the cross-section of the alloy powder block, and the minimum thickness of the coating around the metal core is not less than 1mm, and the mass ratio of the metal core to the coating is 1: (0.3-12). The sandwich alloy powder block for surfacing is prepared by molding or welding rod hydraulic powder coating machine, which overcomes the disadvantages of poor electrical conductivity and thermal conductivity of the sandwich powder block, and is difficult to melt during induction heating, so that the alloy powder block is made of high-efficiency Induction heating cladding becomes possible, and at the same time solves the problem that the alloy powder block is difficult to melt during arc cladding and is easily blown away by the plasma flow force of the arc, greatly improving production efficiency. Patent No. is the Chinese patent of 85102440, discloses a kind of Fe-05 wear-resisting surfacing alloy powder block, and the raw material of this powder block is the mechanical crushing powder of high-carbon ferrochromium, ferroboron, ferrosilicon and 102Fe atomized powder, Their mass ratios are 60-80% of high-carbon ferrochrome; 15-35% of ferro-boron; 2% of ferrosilicon; and 3% of 102Fe atomized powder. Fe-05 wear-resistant surfacing alloy powder is a kind of surfacing material for the surface of workpieces that are subjected to low-stress abrasive wear. Fe-05 powder is added in proportion to several mechanical crushing powders and atomized powders. Quantitative adhesives are mixed and pressed. Fe-05 powder is chromium-based, and its alloy content is C: 5-6.5%; Cr: 48-52%; B: 3-4%; Si: 3-4%; Ni: 2-3%; Fe: 33.5-39%; with arc welding or plasma welding heat source, with or without oxidation protection, the Fe-05 powder block can be surfacing welded on the surface of the steel workpiece; the specifications are: 90×30×3mm, 90×30×4mm, 90×30×5mm, 60×20×3.5mm, special specifications are required, which can be negotiated when ordering.

According to the relevant reports of surfacing alloy powder, it can be known that wear-resistant alloy powder is a developing welding material for surfacing wear-resistant products, especially Fe-05 powder, which is currently very popular for wear-resistant surfacing. Materials, mainly reflected in: for the wear-resistant surfacing and repairing of small-area parts, the process of using carbon arc melting surfacing has been well applied, and the number of manufacturers and production in China is increasing year by year, which shows that the wear-resistant The demand for grinding alloy powder block surfacing materials is increasing obviously, but the shortcoming is that the wear-resistant alloy powder block products are all metal alloy powder block products, and there are few types of single types, just like the new D65K wear-resistant alloy in public reports Although the powder block is a new variety, it is still an improved product of Fe-05 powder block. With the rapid development of the wear-resistant industry, higher requirements are put forward for wear-resistant alloy powder products in terms of wear resistance and variety, and alloy powder products with higher wear resistance are required to meet market demand.

Ceramic materials have the remarkable characteristics of high temperature resistance, corrosion resistance, wear resistance, thermal barrier, and good insulation. They are irreplaceable by metal materials. They are widely used in various fields and have fully demonstrated that they have higher excellent characteristics than metal materials. As we all know, due to the high hardness and brittleness of ceramic materials, pure ceramics are rarely used alone, usually ceramics and metals are used together to give full play to the excellent performance of ceramic materials, but the physical and metallurgical properties of ceramic materials and metal materials are different. Large, so that the organic combination between the two becomes a bottleneck. For example, oxide ceramics and nitride ceramics are difficult to dissolve with the metal molten pool during the surfacing process, which will lead to the phenomenon that the ceramic materials are not firmly bonded and threshed, such as carbonized ceramics. It is easy to decompose in the high-temperature metal molten pool, which will lead to qualitative changes in ceramic materials. In addition, some ceramics such as Al ₂ O ₃ will float when they are light in specific gravity, and tungsten carbide (WC) will sink when they are heavy in specific gravity. These phenomena The effective use of ceramics in surfacing materials has always been troubled, so these problems must be solved through feasible technical solutions in order to achieve the effect of high wear resistance.

Contents of the invention

The technical problem to be solved by the present invention is to provide a wear-resistant alloy powder block containing ceramic particles with excellent wear resistance.

The present invention is a wear-resistant alloy powder block containing ceramic materials, which contains metal and alloy powder, ceramic particles and binder, wherein, in parts by weight, 50-80 parts of metal and alloy powder (total parts of both) , 50-20 parts of ceramic particles, 5-15 parts of binder.

The invention is a wear-resistant alloy powder block containing ceramic materials, wherein the ceramic particles are irregular in shape, spherical or rhombus, and the particle size is 0.5-3mm.

The present invention is a wear-resistant alloy powder block containing ceramic materials, wherein preferably the ceramic particles are oxide ceramic particles, carbide ceramic particles or nitride ceramic particles, or a mixture of any two or more, more preferably carbonized Ceramic particles of tungsten (WC), chromium oxide, zirconia, silicon oxide, aluminum oxide or silicon nitride, or a mixture of any two or more.

The present invention is a wear-resistant alloy powder block containing ceramic materials, wherein the metal and alloy powder are a mixture of metal powder and alloy powder, preferably iron, chromium, nickel, manganese, titanium, vanadium or/and molybdenum metal powder and its alloy powder mixture, the particle size is 60-300 mesh. The ratio of metal powder and alloy powder in the mixture is not limited, that is, it can be a single metal powder or alloy powder, which can achieve the purpose of the present invention. In order to achieve better effects of the present invention, preferably metal and alloy powder, that is, metal powder and alloy powder mixture. The metal powder and alloy powder described in the present invention are available on the market.

A kind of wear-resisting alloy powder block containing ceramic material of the present invention, wherein said binding agent is the binding agent commonly used in this area, preferred binding agent is the mixture of potassium water glass and sodium water glass, wherein, potassium water glass and The weight ratio of sodium water glass is (1～3):1.

The invention is a kind of wear-resistant alloy powder block containing ceramic materials, which is formed by pressing powder block pressing equipment and dried to make a product. The specification of wear-resistant alloy powder block is: length 90mm×width 30-45mm×thickness 3-15mm The square product; the product is dried after drying, the drying temperature is 200-250 ℃, and the heat preservation is 2 hours.

In the application of the above-mentioned wear-resistant alloy powder block in the present invention, the wear-resistant alloy powder block is melted on the metal substrate by means of welding to form a wear-resistant layer, and the wear-resistant layer and the metal substrate are metallurgically bonded.

For the application of the wear-resistant alloy powder block of the present invention, the cladding method is a commonly used method in the welding field, preferably plasma arc, tungsten argon arc or high-frequency induction cladding.

In the application of the wear-resistant alloy powder block of the present invention, in the distribution ratio of the components of the wear-resistant alloy powder block for anti-abrasive wear, the proportion of metal and alloy powder should be in a low proportion range, and the proportion of ceramic particles should be in a high proportion. The reason is: the more ceramic particle phases, the higher the ability to resist abrasive wear.

In the application of the wear-resistant alloy powder block of the present invention, in the distribution ratio of the components of the wear-resistant alloy powder block for anti-erosion wear, the proportion of metal and alloy powder is selected in a high proportion range, and the proportion of ceramic particles is selected in a low proportion range. , the reason is: the wear-resistant alloy powder used for erosion wear must have both high hardness (ceramic particle phase) and high toughness (alloy phase) to ensure anti-wear and erosion resistance, otherwise, when the alloy phase Once it is eroded and worn out, no matter how high the erosion life of the ceramic particle phase is, the entire particle will be eroded away and become invalid. Erosion wear (crosion wear) refers to a type of wear phenomenon in which the surface of the material is damaged when it is impacted by small and loose flowing particles. Its definition can be described as the relative movement of the solid surface and the fluid containing solid particles. The fluid carrying solid particles can be a high-speed airflow or a liquid flow. The former produces sandblasting erosion, while the latter is called mud erosion. Erosion wear is a common type of wear in modern industrial production. form.

For the application of the wear-resistant alloy powder of the present invention, in the distribution ratio of the components of the wear-resistant alloy powder for impact fatigue wear resistance, the ratio of the metal and alloy powder to the ceramic particles is selected in the proportion range, the reason is: the phase energy of the ceramic particles Withstand high impact wear ability, the alloy phase can buffer and release impact stress favorably.

In addition, in the formula ratio, the mass ratio of ceramic particle ingredients with light specific gravity should be in the low proportion range, and the mass ratio of ceramic particle ingredients with heavy specific gravity should be in the high proportion range. In the wear-resistant layer, the volume ratio of the alloy phase and the ceramic particle phase is in line with the anti-wear ratio principle.

The application of the wear-resistant alloy powder block of the present invention, the particle size of metal and alloy powder is 60～300 purpose powder, the particle size of ceramic particle is 0.5～3mm, relatively coarse particle is suitable for impact fatigue wear and abrasive wear resistance in ceramic particle Grinding alloy powder block ingredients, finer particles are suitable for wear-resistant alloy powder block ingredients for erosion wear and high temperature wear; the shape of ceramic particles is irregular, spherical or rhombus, and spherical ceramic particles are suitable for impact fatigue wear and coarse abrasives Abrasive wear-resistant alloy powder batching, rhombic ceramic particles are suitable for wear-resistant alloy powder batching for erosion wear and fine abrasive wear.

The present invention is a wear-resistant alloy powder block containing ceramic particles, which contains a certain proportion of ceramic particle materials, and obtains a wear-resistant layer composed of an alloy phase and a ceramic particle phase by welding, and the alloy phase has the characteristics of a metal material with high strength and toughness , The ceramic phase has excellent ceramic material characteristics, and the wear-resistant layer has the coexistence characteristics of ceramics and alloys, thereby expanding the application range of wear-resistant powder products, significantly improving the wear resistance of alloy powder blocks and prolonging the service life of workpieces . The invention adjusts the proportion of different ingredients, selects ceramic particles of different particle sizes and different ceramic materials, obtains wear-resistant layers with different performances and uses, solves the shortage of metal alloy powder blocks, and satisfies the needs of different performances and uses .

Description of drawings

Fig. 1 is the structural representation of the wear-resistant alloy powder block containing ceramic particle of the present invention;

Fig. 2 is the schematic diagram that deposits wear-resistant alloy powder to prepare wear-resistant layer;

Fig. 3 is a microscope photo of the distribution state of the ceramic particle phase in the wear-resistant layer.

Description of reference signs: 1-wear-resistant alloy powder block; 2-wear-resistant layer; 3-metal substrate; 4-welding heat source; 5-ceramic particles; 6-binder; Mutually.

Detailed ways

The above and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

Large-scale bucket equipment in open-pit coal mines requires wear-resistant stickers to prolong the service life of the equipment. Currently, FeO5 powder is used to surfacing a 7mm-thick wear-resistant layer 2 (including the fusion zone) on the Q235 sticker of the steel substrate 3. Then the patch is welded on the bucket, and the service life is 25 to 30 days, and the wear-resistant patch with this service life cannot meet the needs of users.

Embodiment 1, as shown in Figure 1-2, a kind of wear-resistant alloy powder block 1 of the present invention, batching is prepared by the following weight, metal and alloy powder 65g, wherein: high-carbon ferrochrome 45.5g, medium carbon ferromanganese 7.8 g, ferroboron 3.25g, ferrosilicon 3.9g, nickel powder 3.2g, ferromolybdenum 1.3g, powder particle size is 150 mesh; ceramic particle is 35g, wherein: carbide (WC) is 15g, is spherical shape, particle size is 2.0mm, Al ₂ O ₃ is 10g, irregular particle shape, particle size is 0.5mm; 1.5g of powdered solid potassium silicate is added to increase the bonding strength of the powder block. Weigh the ingredients according to the above ratio and mix them evenly, then add 8g of potassium water glass and sodium water glass mixture, wherein the amount of potassium water glass added is 6g, and the amount of sodium water glass added is 2g, stir evenly, and press with powder block The equipment is pressed into a rectangular product with a length of 90mm x width of 40mm x thickness of 8mm. After drying, it is then dried at a temperature of 200°C and kept for 2 hours. Wherein, the powder block pressing equipment used in this embodiment is the conventional equipment used in this field.

The wear-resistant alloy powder block 1 is placed flat on the paste block of the steel substrate Q235, and the wear-resistant alloy powder block is melted by a tungsten argon arc welding method to obtain an average thickness of the wear-resistant layer 2 of 7.5mm (including the fusion zone) , the wear-resistant layer includes a metal alloy phase 8 formed of metal and alloy powder and a ceramic phase 7 formed of ceramic particles. Through the application on the bucket equipment, the service life reaches more than 160 days.

Embodiment 2, using the wear-resistant alloy powder block of the present invention to improve the impact and wear resistance service life of the crushing hammer, which is used for crushing ore in steelmaking plants. At present, the material used for the hammer head is quenched 45# steel. The service life is that a set of hammer heads will fail after crushing 5,000 tons of ore. In fact, it will be scrapped within 2 to 3 days. Users are in urgent need of wear-resistant hammer products with a longer service life.

A wear-resistant alloy powder block of the present invention is adopted to deposit a wear-resistant layer with a certain thickness on the worn part of the hammer head to improve the service life. The amount of metal and alloy powder added is 50g, including: 10g metal chromium, 10g ferrochrome, 2.5g ferroboron, 2.5g ferrosilicon, 5g nickel powder, 3g ferrotitanium, 2.5g ferromolybdenum, 2.5g ferrovanadium, medium carbon Ferromanganese 5g, the rest is iron powder, the particle size of the powder is 60 mesh; the ceramic particle ingredients are carbide (WC), and the addition amount is 50g, of which: spherical and irregular particles each account for half, and the particle size is 2.5mm; add 1.5g The powdery solid potassium water glass acts as an increase in the cohesive strength of the powder block. Mix evenly according to the above ingredients, then add a mixture of 12g of potassium water glass and sodium water glass, wherein the amount of potassium water glass added is 9g, and the amount of sodium water glass added is 3g, stir evenly, and use a powder block press to press into The specifications are: a square product with a length of 90mm×width 40mm×thickness of 10mm, after being dried in the air, it is then dried at a temperature of 200°C and kept for 2 hours.

The wear-resistant alloy powder block 1 is placed flat on the wear part of the hammer head, and the wear-resistant alloy powder block is melted by a high-frequency induction welding method, so that the average thickness of the wear-resistant layer 2 is 10mm (including the fusion zone), and the wear-resistant layer It includes a metal alloy phase 8 formed of metal and alloy powders and a ceramic phase 7 formed of ceramic particles. Through actual production and application, the service life reaches more than 30 days, and the wear-resistant layer 2 does not fall off or drop particles under impact conditions.

Embodiment 3, using the wear-resistant alloy powder block of the present invention to improve the high-temperature wear service life of the slag outlet of the steel mill, adopting a kind of wear-resistant alloy powder block of the present invention, the addition of metal and alloy powder is 80g, wherein: metal 10g of chromium, 20g of ferrochrome, 2.5g of ferroboron, 2.5g of ferrosilicon, 5g of nickel powder, 3g of ferrotitanium, 2.5g of ferromolybdenum, 2.5g of ferrovanadium, 15g of cobalt powder, 4g of nickel chromium borosilicate powder, and the rest is iron powder, the particle size of the powder is 300 mesh; the amount of ceramic particles added is 30g, and the ingredients are 20g of zirconia and 10g of silicon nitride, of which: diamond-shaped and irregular particles each account for half, and the particle size is 0.5mm; mix evenly according to the above ingredients, Add the mixture of 15g potassium water glass and sodium water glass subsequently, wherein, the addition amount of potassium water glass is 10g, the addition amount of sodium water glass is 5g, stirs evenly, adopts the powder block press machine to be pressed into specification and is: length 90mm * width 40mm x 12mm thick box-shaped product, after drying, then drying, drying temperature 200 ℃, heat preservation for 2 hours.

Place the wear-resistant alloy powder block 1 flatly on a slat made of 2Cr25Ni20 heat-resistant steel, 550 mm long, 100 mm wide, and 18 mm thick, and use the plasma arc automatic welding method to melt the wear-resistant alloy powder block to obtain a wear-resistant layer 2 The average thickness of the wear-resistant layer is 12mm (including the fusion zone), and the wear-resistant layer includes a metal alloy phase 8 formed by metal and alloy powder and a ceramic phase 7 formed by ceramic particles. The welded slats are welded to the most severely worn part of the slag outlet. Through actual production and application, the service life is increased by 4 times compared with the original one. The wear-resistant layer 2 does not fall off or drop particles under high temperature wear conditions.

For the mixed metal and alloy powders used in the above-mentioned embodiments, the present invention can also use a single metal powder or alloy powder. When the metal powder is used as the soft matrix, ceramic particles are added as hard particles, so physical properties such as wear resistance The performance is still stronger than the wear-resistant powder block of the prior art, but less than that of the metal and alloy mixed powder. When the alloy powder is completely used, the wear-resistant alloy powder block obtained has better wear resistance, but the cost is higher.

The wear-resistant alloy powder block of the present invention prepares a wear-resistant layer on a metal substrate by welding. The wear-resistant layer works in a wear environment and must bear the forces of wear, erosion, and impact, so it must have sufficient strength. Toughness and bonding strength. The wear-resistant layer is prepared by welding. The wear-resistant layer and the metal substrate are metallurgically bonded to ensure high bonding strength. There is an alloy phase in the wear-resistant layer to ensure high strength and toughness, but wear-resistant The combination between the ceramic particle phase and the alloy phase in the layer should also have sufficient bonding strength, otherwise, the ceramic particle phase will drop during use, and the significance of ceramics in the wear-resistant layer will be lost. The present invention selects granular ceramic materials with a particle size of 0.5-3mm, utilizes the characteristics of high melting point of ceramic materials, and in the full metallurgical reaction process of metals and alloys, undergoes interfacial diffusion reaction with ceramic materials to produce a certain bonding strength, and at the same time utilizes the molten pool The solidification and shrinkage force of the alloy in the alloy tightly wraps the ceramic particle phase, thus solving the problem that the ceramic particle phase will not fall off during the wear process.

The specific gravity of many ceramic materials is quite different from that of metal materials. During the process of melting, reacting, and solidifying to form a wear-resistant layer, ceramic materials will float and sink, resulting in uneven distribution of ceramic materials in the wear-resistant layer. , this phenomenon degrades the performance of the wear layer. The present invention selects granular ceramic materials with a particle size of 0.5-3mm. A certain proportion of granular ceramic materials can shorten the solidification time of metals, and at the same time use the surface tension of the metal to restrain the floating and sinking problems of ceramic granular materials. The effect of uniform distribution of ceramic particles in the wear-resistant layer, the distribution effect is shown in Figure 3.

The present invention adopts the welding method to prepare the wear-resistant layer 2 on the metal substrate 3, and the welding heat source 4 adopts the welding method of plasma arc, tungsten argon arc, and high-frequency induction to melt the wear-resistant alloy powder block 1 to prepare the wear-resistant layer 2 , reflecting the beneficial characteristics of high welding efficiency, good quality of the deposited wear-resistant layer and automatic operation, suitable for wear-resistant modification of the surface of new products, and wear-resistant repair of the surface of old products; the wear-resistant layer is made of ceramics Composed of particle phase 7 and alloy phase 8, the weight ratio is: ceramic particle phase 20-50: alloy phase 50-80, the alloy phase has the characteristics of a metal material with high strength and toughness, and the ceramic phase has excellent characteristics of a ceramic material, reflecting the durability The grinding layer has the coexistence characteristics of ceramics and alloys to significantly improve the service life of the workpiece; the metallurgical bond between the wear-resistant layer and the metal substrate reflects the characteristics of high bonding strength and good impact resistance.

The wear-resistant layer 2 is prepared by using the wear-resistant alloy powder block product 1 of the present invention, which shows the following beneficial effects:

(1) The wear-resistant alloy powder block 1 proposed by the present invention is a product prepared by metal and alloy powder 50～80: ceramic particles 50～20: binder 5～15 batching ratio, and the wear-resistant layer 2 after welding is made of The composition of ceramic particle phase 7 and alloy phase 8 ensures the excellent performance of ceramic materials, maintains the toughness of alloy materials, reflects the coexistence characteristics of ceramics and alloys, and fills the "alloy + ceramics" in wear-resistant alloy powder block welding materials. Particles" productization blank.

(2) The wear-resistant alloy powder block 1 proposed by the present invention contains ceramic particles 5 with a particle size of 0.5-3 mm, which can significantly improve the wear resistance of the alloy powder block product and broaden the application range of the ceramic material.

(3) The welding method proposed by the present invention adopts plasma arc, tungsten argon arc and high-frequency induction to prepare wear-resistant layer on the metal substrate. These methods are easy to control the welding heat, can fully melt the metal material, and have high welding efficiency , can realize automatic operation, and the quality of the deposited wear-resistant layer is good.

The above-mentioned embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. Variations and improvements should fall within the scope of protection defined by the claims of the present invention.

Claims (9)

1. A wear-resistant alloy powder block containing ceramic materials, characterized in that: it contains metal and alloy powder, ceramic particles and binder, wherein, in parts by weight, 50 to 80 parts of metal and alloy powder, 20 parts of ceramic particles ～50 parts, binder 5～15 parts. 2. The wear-resistant alloy powder block according to claim 1, characterized in that: the ceramic particles are irregular in shape, spherical or rhombus, and the particle size is 0.5-3 mm. 3. The wear-resistant alloy powder block according to claim 2, characterized in that: the ceramic particles are oxide ceramic particles, carbide ceramic particles or nitride ceramic particles, or a mixture of any two or more of them. 4. The wear-resistant alloy powder block according to claim 3, characterized in that: the ceramic particles are tungsten carbide, chromium oxide, zirconia, silicon oxide, aluminum oxide or silicon nitride, or any two or both a mixture of the above. 5. The wear-resistant alloy powder block according to claim 1, characterized in that: said metal and alloy powders are iron, chromium, nickel, manganese, titanium, vanadium or/and molybdenum metal powders and alloy powders thereof, and the particle size It is 60-300 mesh. 6. wear-resistant alloy powder block according to claim 1, is characterized in that: described bonding agent is the mixture of potassium water glass and sodium water glass, and wherein, the weight ratio of potassium water glass and sodium water glass is (1 ~3):1. 7. The application of the wear-resistant alloy powder block described in any one of claims 1-6, using the method of welding to melt the wear-resistant alloy powder block above the metal substrate to form a wear-resistant layer, and between the wear-resistant layer and the metal substrate Between metallurgical bonding. 8. The application of the wear-resistant alloy powder block according to claim 7, characterized in that: the welding method is plasma arc, tungsten argon arc or high frequency induction welding method. 9. The application of the wear-resistant alloy powder according to claim 7, characterized in that: it is used for anti-abrasive wear, anti-erosion wear, anti-fatigue wear or anti-high temperature wear.

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