A method for preparing boron-added high-speed steel roller ring

Abstract

The present invention proposes a preparation method of a boron-added high-speed steel roller ring, which is applied to the technical field of high-speed steel roller rings. The method comprises placing a pre-processed material in an electromagnetic induction furnace and melting it at a first preset temperature to obtain initial molten steel, adding ferrosilicon, ferromanganese and a borate compound to the initial molten steel, heating it to a second preset temperature for sufficient fusion to obtain intermediate molten steel, transferring the intermediate molten steel to a ladle, heating it to a third preset temperature within a first preset time and adding ferroboron and a slag-forming agent, and centrifugally casting it to obtain an initial high-speed steel roller ring model, cooling the initial high-speed steel roller ring model into a mold, and performing rough processing to obtain an intermediate high-speed steel roller ring model, heating the intermediate high-speed steel roller ring model with the furnace to a preset temperature range, keeping it warm for a second preset time, and cooling it to the second preset temperature range after keeping warm to complete the preparation of the high-speed steel roller ring.

Description

Technical Field

[0001] The present invention relates to the technical field of high-speed steel roller rings, and in particular to a method for preparing a boron-added high-speed steel roller ring. Background Art

[0002] Rollers are key tools in wire production and must be able to withstand considerable force and heat. In addition to excellent fracture resistance, their surfaces must also possess excellent wear and heat resistance. The materials used in hot-rolled rolls have been continuously improved and developed, from early ordinary chilled cast iron, infinitely chilled alloy cast iron, high-chromium cast iron, and high-chromium cast steel to the high-speed steel and cemented carbide currently used internationally. This roughly represents the evolution of hot-rolled rolls.

[0003] In the current process of preparing steel roller rings, bainite ductile iron roller rings are used. Although they have good toughness, they still have the problem of large amounts of precious alloy nickel added, poor high-temperature performance of the roller rings, and low high-temperature hardness. Therefore, it is necessary to solve the problem of insufficient temperature resistance of steel roller rings. Summary of the Invention

[0004] In order to solve the above problems, the present invention proposes a method for preparing a boron-added high-speed steel roller ring to more accurately solve the problem of insufficient temperature resistance of the above-mentioned steel roller ring.

[0005] The present invention is achieved through the following technical solutions:

[0006] The present invention provides a method for preparing a boron-added high-speed steel roller ring, comprising the following steps:

[0007] Placing a pre-processed material in an electromagnetic induction furnace at a first preset temperature to melt the material to obtain initial molten steel, wherein the pre-processed material comprises scrap steel, ferrochrome, ferromolybdenum, ferrotungsten, ferrovanadium, and metallic cobalt in proportion by weight;

[0008] adding ferrosilicon, ferromanganese and a borate compound to the initial molten steel, heating the steel to a second preset temperature for full fusion, and obtaining intermediate molten steel;

[0009] The intermediate molten steel is transferred into a ladle, heated to a third preset temperature within a first preset time, ferroboron and a slag forming agent are added, and centrifugal casting is performed to obtain an initial high-speed steel roller ring model;

[0010] Cooling and casting the initial high-speed steel roller ring model, and performing rough machining to obtain an intermediate high-speed steel roller ring model;

[0011] The intermediate high-speed steel roller ring model is heated in a furnace to a preset temperature range, kept warm for a second preset time, cooled to a second preset temperature range after keeping warm, and heated and cooled again at least three times to complete the preparation of the high-speed steel roller ring.

[0012] Furthermore, the scrap steel, ferrochrome, ferromolybdenum, ferrotungsten, ferrovanadium and metallic cobalt include, in parts by weight:

[0013] Scrap steel: 10-15 parts;

[0014] Ferrochrome: 30-45 parts;

[0015] Ferromolybdenum: 30-45 parts;

[0016] Ferrotungsten: 6-8 parts;

[0017] Ferrovanadium: 4-6 parts;

[0018] Cobalt metal: 10-12 parts.

[0019] Furthermore, the ferrosilicon, ferromanganese and borate compounds include, by weight:

[0020] Ferrosilicon: 3-5 parts;

[0021] Ferromanganese: 3-5 parts;

[0022] Borate compound: 35-50 parts.

[0023] Furthermore, the ferroboron and slagging agent include, in parts by weight:

[0024] Ferroboron: 15-20 parts;

[0025] Slag-forming agent: 15-20 parts.

[0026] Furthermore, the slagging agent comprises, in parts by weight:

[0027] Sodium chloride: 25 parts;

[0028] Potassium chloride: 30 parts;

[0029] Calcium fluoride: 3 parts;

[0030] Aluminum trichloride: 1 part;

[0031] Cryolite: 1 part.

[0032] Furthermore, the borate compound includes one or more of sodium tetraborate, boraxite and boraxite.

[0033] Furthermore, the step of placing the pre-processed material in an electromagnetic induction furnace at a first preset temperature for melting to obtain initial molten steel includes:

[0034] Pour water into the electromagnetic induction cooker and preheat it to the first preset temperature;

[0035] When the first preset temperature is reached, the iron compound is added into the electromagnetic induction furnace and stirred evenly, and then scrap iron and metallic cobalt are added to melt to obtain the initial molten steel.

[0036] Furthermore, the step of obtaining an initial high-speed steel roller ring model by centrifugal casting includes:

[0037] The ladle is preheated to a preset temperature and maintained at a constant temperature, a centrifugal casting machine is started, a metal mold installed on the centrifugal casting machine is driven to rotate, and the intermediate molten steel is poured into the metal mold to form a casting to obtain a casting;

[0038] The casting is separated from the metal mold by pouring water to obtain the initial high-speed steel roller ring model.

[0039] Furthermore, the step of cooling the initial high-speed steel roller ring model and performing rough machining to obtain an intermediate high-speed steel roller ring model includes:

[0040] Placing the initial high-speed steel roller ring model on a lathe, and performing small cutting and multiple cutting operations on the lathe;

[0041] After cutting, the initial high-speed steel roller ring model is ground using a grinder to obtain the intermediate high-speed steel roller ring model.

[0042] Furthermore, the step of heating the intermediate high-speed steel roller ring model to a preset temperature range with the furnace, keeping the temperature for a second preset time, and cooling the temperature to the second preset temperature range after keeping the temperature, includes:

[0043] Placing the intermediate high-speed steel roller ring model in a heating furnace, and heating the heating furnace to increase the temperature of the intermediate high-speed steel roller ring model;

[0044] By setting the heat preservation time, cooling down and then heating up, the intermediate high-speed steel roller ring model is made heat-resistant to obtain a high-speed steel roller ring.

[0045] Beneficial effects of the present invention:

[0046] The present invention proposes a method for preparing a boron-added high-speed steel roller ring. During the preparation of the high-speed steel roller ring, a boron material is added. The boron material is relatively stable at room temperature and has no effect even when boiled in hydrochloric acid or hydrofluoric acid for a long time. The boron material reacts with the metal to form a metal boride, thereby making the high-speed steel roller ring have high hardness and high temperature resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is an exploded diagram of the process of a method for preparing a boron-added high-speed steel roller ring according to the present invention;

[0048] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0050] Please refer to Figure 1 The present invention provides a method for preparing a boron-added high-speed steel roller ring, comprising the following steps:

[0051] S1: placing a pre-processed material in an electromagnetic induction furnace at a first preset temperature to melt it to obtain initial molten steel, wherein the pre-processed material includes scrap steel, ferrochrome, ferromolybdenum, ferrotungsten, ferrovanadium and metallic cobalt in proportion by weight;

[0052] S2: adding ferrosilicon, ferromanganese and borate compounds to the initial molten steel, heating to a second preset temperature for full fusion, to obtain intermediate molten steel;

[0053] S3: transferring the intermediate molten steel into a ladle, heating it to a third preset temperature within a first preset time, adding ferroboron and a slag-forming agent, and performing centrifugal casting to obtain an initial high-speed steel roller ring model;

[0054] S4: Cooling the initial high-speed steel roller ring model and performing rough machining to obtain an intermediate high-speed steel roller ring model;

[0055] S5: heating the intermediate high-speed steel roller ring model to a preset temperature range with the furnace, keeping it warm for a second preset time, cooling it to the second preset temperature range after keeping warm, and heating and cooling it again at least three times to complete the preparation of the high-speed steel roller ring.

[0056] In this embodiment, water is poured into the electromagnetic induction furnace, wherein the ratio of water to pre-processed material is 1:5. After the water is poured in, the electromagnetic induction furnace is heated to a first preset temperature, i.e., 750°C-800°C. Ferrochromium, ferromolybdenum, ferrotungsten, ferrotungsten and ferrovanadium are placed in the preheated electromagnetic induction furnace and stirred for the first time. Then, scrap iron and metallic cobalt are added and fully fused with the ferrite to obtain initial molten steel, wherein the initial molten steel contains unmelted metal solids. Ferrosilicon, ferromanganese and borate compounds are added to the initial molten steel and heated to a second preset temperature, i.e., 2707°C-2725°C, so that the metal materials are completely melted and fused to obtain intermediate molten steel. The intermediate molten steel is transferred and placed in a ladle, which refers to a container for holding molten steel, made of steel and lined with refractory bricks. The ladle is heated to a third preset temperature, i.e., 1631°C-1649°C, within a first preset time, i.e., 100min-120min. After heating, boron is added. After the iron and slag-forming agent are fully stirred, the metal mold is preheated to 800℃-900℃, and the intermediate molten steel is poured into the metal mold. The centrifugal casting machine is started to drive the metal mold to operate to obtain an initial high-speed steel roller ring model. The initial high-speed steel rod ring model is cooled to room temperature and placed on a lathe. The lathe performs small cutting and multiple cutting. After cutting, the initial high-speed steel roller ring model is ground using a grinder to obtain an intermediate high-speed steel roller ring model. The intermediate high-speed steel roller ring model is placed in a heating furnace. The heating furnace is heated so that the intermediate high-speed steel roller ring model is heated at the same time. After heating to a preset temperature range of 550℃-565℃, it is kept warm for 5h-6h. After the insulation is completed, it is cooled to a second preset temperature range of 110℃-120℃, and the heating is repeated twice, kept warm for 1h-2h, and cooled so that the high-speed steel roller ring can obtain temperature resistance, thereby completing the preparation of the high-speed steel roller ring.

[0057] In this embodiment, the scrap steel, ferrochrome, ferromolybdenum, ferrotungsten, ferrovanadium and metallic cobalt include, in parts by weight:

[0058] Scrap steel: 10-15 parts;

[0059] Ferrochrome: 30-45 parts;

[0060] Ferromolybdenum: 30-45 parts;

[0061] Ferrotungsten: 6-8 parts;

[0062] Ferrovanadium: 4-6 parts;

[0063] Cobalt metal: 10-12 parts.

[0064] In this embodiment, ferrosilicon, ferromanganese and borate compounds include, in parts by weight:

[0065] Ferrosilicon: 3-5 parts;

[0066] Ferromanganese: 3-5 parts;

[0067] Borate compound: 35-50 parts.

[0068] In this embodiment, the ferroboron and slagging agent include, in parts by weight:

[0069] Ferroboron: 15-20 parts;

[0070] Slag-forming agent: 15-20 parts.

[0071] In this embodiment, the slag-forming agent comprises, in parts by weight:

[0072] Sodium chloride: 25 parts;

[0073] Potassium chloride: 30 parts;

[0074] Calcium fluoride: 3 parts;

[0075] Aluminum trichloride: 1 part;

[0076] Cryolite: 1 part.

[0077] In this embodiment, the borate compound includes one or more of sodium tetraborate, boraxite, and boraxite.

[0078] In this embodiment, the step of placing the pre-processed material in an electromagnetic induction furnace at a first preset temperature and melting it to obtain initial molten steel includes:

[0079] Pour water into the electromagnetic induction cooker and preheat it to the first preset temperature;

[0080] When the first preset temperature is reached, the iron compound is added into the electromagnetic induction furnace and stirred evenly, and then scrap iron and metallic cobalt are added to melt to obtain the initial molten steel.

[0081] In this embodiment, the step of obtaining an initial high-speed steel roll ring model by centrifugal casting includes:

[0082] The ladle is preheated to a preset temperature and maintained at a constant temperature, a centrifugal casting machine is started, a metal mold installed on the centrifugal casting machine is driven to rotate, and the intermediate molten steel is poured into the metal mold to form a casting to obtain a casting;

[0083] The casting is separated from the metal mold by pouring water to obtain the initial high-speed steel roller ring model.

[0084] In this embodiment, the steps of cooling the initial high-speed steel roll ring model and performing rough machining to obtain an intermediate high-speed steel roll ring model include:

[0085] Placing the initial high-speed steel roller ring model on a lathe, and performing small cutting and multiple cutting operations on the lathe;

[0086] After cutting, the initial high-speed steel roller ring model is ground using a grinder to obtain the intermediate high-speed steel roller ring model.

[0087] In this embodiment, the steps of heating the intermediate high-speed steel roller ring model to a preset temperature range, keeping the temperature for a second preset time, and cooling the temperature to the second preset temperature range after keeping the temperature include:

[0088] Placing the intermediate high-speed steel roller ring model in a heating furnace, and heating the heating furnace to increase the temperature of the intermediate high-speed steel roller ring model;

[0089] By setting the heat preservation time, cooling down and then heating up, the intermediate high-speed steel roller ring model is made heat-resistant to obtain a high-speed steel roller ring.

[0090] Example 1:

[0091] Water is poured into the electromagnetic induction furnace, wherein the ratio of water to pre-processed material is 1:5. After the water is poured in, the electromagnetic induction furnace is heated to a first preset temperature, i.e., 750°C. 30 parts of ferrochrome, 30 parts of ferromolybdenum, 6 parts of ferrotungsten and 4 parts of ferrovanadium, which are weighed in proportion, are placed in the preheated electromagnetic induction furnace and stirred for the first time. Then, 10 parts of scrap iron and 10 parts of metallic cobalt are added and fully fused with the ferrite to obtain initial molten steel, wherein the initial molten steel contains unmelted metal solids. 3 parts of ferrosilicon, 3 parts of ferromanganese and 35 parts of borate compounds are added to the initial molten steel, and the mixture is stirred for 1 minute. The steel is heated to a second preset temperature, i.e., 2707°C, wherein the second preset temperature is to reach the melting point of all metal compounds, so that the metal materials are completely melted and fused to obtain intermediate molten steel, and ensure that there is no solid in the intermediate molten steel. If there are still solid compounds, continue to heat and stir to make all solids melt in the liquid. The intermediate molten steel is transferred and placed in a ladle. The ladle refers to a container for holding molten steel, made of steel, and lined with refractory bricks. It is heated to a third preset temperature, i.e., 1631°C, within the first preset time, i.e., 100 minutes. After heating, 15 parts of ferroboron and 15 parts of ferrous iron are added. The slag forming agent is prepared by mixing 25 parts of sodium chloride, 30 parts of potassium chloride, 3 parts of calcium fluoride, 1 part of aluminum chloride and 1 part of cryolite by weight. After being fully stirred, the metal mold is preheated to 800°C, and the intermediate molten steel is poured into the metal mold. The metal mold is driven to operate by starting a centrifugal casting machine to obtain an initial high-speed steel roller ring model. The initial high-speed steel rod ring model is cooled to room temperature and placed on a lathe. The lathe performs small cutting and multiple cutting. After cutting, the initial high-speed steel roller ring model is ground using a grinder to obtain an intermediate high-speed steel. Roller ring model, place the intermediate high-speed steel roller ring model in a heating furnace, heat the heating furnace so that the intermediate high-speed steel roller ring model is heated at the same time, heat to the preset temperature range, i.e. 550°C, keep warm for 5 hours, cool to the second preset temperature range, i.e. 110°C after the end of the heat preservation, and repeat the heating to 540°C, keep warm for 1 hour, cool to 120°C, heat to 550°C again, keep warm for 1 hour, cool to 110°C, take it out of the heating furnace, cool to room temperature, so that the high-speed steel roller ring can obtain temperature resistance, and complete the preparation of the high-speed steel roller ring.

[0092] Example 2:

[0093] Pour water into the electromagnetic induction furnace, wherein the ratio of water to pre-processed material is 1:5. After the water is poured in, the electromagnetic induction furnace is heated to a first preset temperature, i.e., 750°C. 37.5 parts of ferrochrome, 37.5 parts of ferromolybdenum, 7 parts of ferrotungsten and 5 parts of ferrovanadium, which are weighed in proportion, are placed in the preheated electromagnetic induction furnace and stirred for the first time. Then, 12.5 parts of scrap iron and 12.5 parts of metallic cobalt are added and fully fused with the ferrite to obtain initial molten steel, wherein the initial molten steel contains unmelted metal solids. 4 parts of ferrosilicon, 4 parts of ferromanganese and 42.5 parts of boric acid are added to the initial molten steel. The salt compound is heated to a second preset temperature, i.e., 2707°C, wherein the second preset temperature is to reach the melting point of all metal compounds so that the metal materials are completely melted and fused to obtain intermediate molten steel, and ensure that there is no solid in the intermediate molten steel. If there are still solid compounds, continue to heat and stir so that all solids are melted in the liquid. The intermediate molten steel is transferred and placed in a ladle. The ladle refers to a container for holding molten steel, made of steel, and lined with refractory bricks. It is heated to a third preset temperature, i.e., 1640°C within a first preset time, i.e., 110 minutes. After heating, 17.5 parts of boron are added. Iron and 17.5 parts of slag forming agent, wherein the slag forming agent is prepared by weight ratio of 25 parts of sodium chloride, 30 parts of potassium chloride, 3 parts of calcium fluoride, 1 part of aluminum chloride and 1 part of cryolite, after being fully stirred, the metal mold is preheated to 850 ° C, and the intermediate molten steel is poured into the metal mold, and the metal mold is driven to operate by starting the centrifugal casting machine to obtain an initial high-speed steel roller ring model, and the initial high-speed steel rod ring model is cooled to room temperature and placed on a lathe, and a small amount of cutting is performed on the lathe, and cutting is performed multiple times. After cutting, the initial high-speed steel roller ring model is ground by a grinder to obtain a medium The intermediate high-speed steel roller ring model is placed in a heating furnace, and the heating furnace is heated so that the intermediate high-speed steel roller ring model is heated at the same time. After the temperature is raised to the preset temperature range, that is, 550℃, it is kept warm for 5 hours. After the insulation is completed, it is cooled to the second preset temperature range, that is, 110℃, and the temperature is repeatedly raised to 540℃, kept warm for 1 hour, and cooled to 120℃. It is heated to 550℃ again, kept warm for 1 hour, and then cooled to 110℃. It is taken out of the heating furnace and cooled to room temperature so that the high-speed steel roller ring can obtain temperature resistance, thereby completing the preparation of the high-speed steel roller ring.

[0094] Example 3:

[0095] Water is poured into the electromagnetic induction furnace, wherein the ratio of water to pre-processed material is 1:5. After the water is poured in, the electromagnetic induction furnace is heated to a first preset temperature, i.e., 750°C. 30 parts of ferrochrome, 30 parts of ferromolybdenum, 6 parts of ferrotungsten and 4 parts of ferrovanadium, which are weighed in proportion, are placed in the preheated electromagnetic induction furnace and stirred for the first time. Then, 10 parts of scrap iron and 10 parts of metallic cobalt are added and fully fused with the ferrite to obtain initial molten steel, wherein the initial molten steel contains unmelted metal solids. 3 parts of ferrosilicon, 3 parts of ferromanganese and 35 parts of borate compounds are added to the initial molten steel, and the mixture is stirred for 1 minute. The steel is heated to a second preset temperature, i.e., 2707°C, wherein the second preset temperature is to reach the melting point of all metal compounds, so that the metal materials are completely melted and fused to obtain intermediate molten steel, and ensure that there is no solid in the intermediate molten steel. If there are still solid compounds, continue to heat and stir to make all solids melt in the liquid. The intermediate molten steel is transferred and placed in a ladle. The ladle refers to a container for holding molten steel, made of steel, and lined with refractory bricks. It is heated to a third preset temperature, i.e., 1631°C, within the first preset time, i.e., 100 minutes. After heating, 15 parts of ferroboron and 15 parts of ferrous iron are added. The slag forming agent is prepared by mixing 25 parts of sodium chloride, 30 parts of potassium chloride, 3 parts of calcium fluoride, 1 part of aluminum chloride and 1 part of cryolite by weight. After being fully stirred, the metal mold is preheated to 800°C, and the intermediate molten steel is poured into the metal mold. The metal mold is driven to operate by starting a centrifugal casting machine to obtain an initial high-speed steel roller ring model. The initial high-speed steel rod ring model is cooled to room temperature and placed on a lathe. The lathe performs small cutting and multiple cutting. After cutting, the initial high-speed steel roller ring model is ground using a grinder to obtain an intermediate high-speed steel. Roller ring model, place the intermediate high-speed steel roller ring model in a heating furnace, heat the heating furnace so that the intermediate high-speed steel roller ring model is heated at the same time, heat to the preset temperature range, i.e. 550°C, keep warm for 5 hours, cool to the second preset temperature range, i.e. 110°C after the end of the heat preservation, and repeat the heating to 540°C, keep warm for 1 hour, cool to 120°C, heat to 550°C again, keep warm for 1 hour, cool to 110°C, take it out of the heating furnace, cool to room temperature, so that the high-speed steel roller ring can obtain temperature resistance, and complete the preparation of the high-speed steel roller ring.

[0096] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A method for preparing a boron-added high-speed steel roller ring, characterized in that: include: Placing a pre-processed material in an electromagnetic induction furnace at a first preset temperature to melt the material to obtain initial molten steel, wherein the pre-processed material comprises scrap steel, ferrochrome, ferromolybdenum, ferrotungsten, ferrovanadium, and metallic cobalt in proportion by weight; adding ferrosilicon, ferromanganese and a borate compound to the initial molten steel, heating the steel to a second preset temperature for full fusion, and obtaining intermediate molten steel; The intermediate molten steel is transferred into a ladle, heated to a third preset temperature within a first preset time, ferroboron and a slag forming agent are added, and centrifugal casting is performed to obtain an initial high-speed steel roller ring model; Cooling and casting the initial high-speed steel roller ring model, and performing rough machining to obtain an intermediate high-speed steel roller ring model; The intermediate high-speed steel roller ring model is heated in a furnace to a preset temperature range, kept warm for a second preset time, cooled to a second preset temperature range after keeping warm, and heated and cooled again at least three times to complete the preparation of the high-speed steel roller ring.

2. The method for preparing a boron-added high-speed steel roller ring according to claim 1, characterized in that: Scrap steel, ferrochrome, ferromolybdenum, ferrotungsten, ferrovanadium and cobalt metal include, in parts by weight: Scrap steel: 10-15 parts; Ferrochrome: 30-45 parts; Ferromolybdenum: 30-45 parts; Ferrotungsten: 6-8 parts; Ferrovanadium: 4-6 parts; Cobalt metal: 10-12 parts.

3. The method for preparing a boron-added high-speed steel roller ring according to claim 1, characterized in that: Ferrosilicon, ferromanganese and borate compounds include, by weight: Ferrosilicon: 3-5 parts; Ferromanganese: 3-5 parts; Borate compound: 35-50 parts.

4. The method for preparing a boron-added high-speed steel roller ring according to claim 1, characterized in that: Ferroboron and slagging agent include in parts by weight: Ferroboron: 15-20 parts; Slag-forming agent: 15-20 parts.

5. The method for preparing a boron-added high-speed steel roller ring according to claim 1, characterized in that: The slagging agent comprises, in parts by weight: Sodium chloride: 25 parts; Potassium chloride: 30 parts; Calcium fluoride: 3 parts; Aluminum trichloride: 1 part; Cryolite: 1 part.

6. The method for preparing a boron-added high-speed steel roller ring according to claim 1, characterized in that: The borate compound includes one or more of sodium tetraborate, boraxite and boraxite.

7. The method for preparing a boron-added high-speed steel roller ring according to claim 1, characterized in that: The step of placing the pre-processed material in an electromagnetic induction furnace at a first preset temperature and melting it to obtain initial molten steel includes: Pour water into the electromagnetic induction cooker and preheat it to the first preset temperature; When the first preset temperature is reached, the iron compound is added into the electromagnetic induction furnace and stirred evenly, and then scrap iron and metallic cobalt are added to melt to obtain the initial molten steel.

8. The method for preparing a boron-added high-speed steel roller ring according to claim 1, characterized in that: The step of obtaining an initial high-speed steel roller ring model by centrifugal casting comprises: The ladle is preheated to a preset temperature and maintained at a constant temperature, a centrifugal casting machine is started, a metal mold installed on the centrifugal casting machine is driven to rotate, and the intermediate molten steel is poured into the metal mold to form a casting to obtain a casting; The casting is separated from the metal mold by pouring water to obtain the initial high-speed steel roller ring model.

9. The method for preparing a boron-added high-speed steel roller ring according to claim 1, characterized in that: The step of cooling and casting the initial high-speed steel roller ring model and performing rough processing to obtain an intermediate high-speed steel roller ring model includes: Placing the initial high-speed steel roller ring model on a lathe, and performing small cutting amount and multiple cutting on the lathe; After cutting, the initial high-speed steel roller ring model is ground using a grinder to obtain the intermediate high-speed steel roller ring model.

10. The method for preparing a boron-added high-speed steel roller ring according to claim 1, characterized in that: The step of heating the intermediate high-speed steel roller ring model to a preset temperature range with the furnace, keeping the temperature for a second preset time, and cooling the temperature to the second preset temperature range after keeping the temperature, includes: Placing the intermediate high-speed steel roller ring model in a heating furnace, and heating the heating furnace to increase the temperature of the intermediate high-speed steel roller ring model; By setting the heat preservation time, cooling down and then heating up, the intermediate high-speed steel roller ring model is made heat-resistant to obtain a high-speed steel roller ring.

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