CN110760665A - Production process of high-wear-resistance roller - Google Patents
Production process of high-wear-resistance roller Download PDFInfo
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- CN110760665A CN110760665A CN201911106956.9A CN201911106956A CN110760665A CN 110760665 A CN110760665 A CN 110760665A CN 201911106956 A CN201911106956 A CN 201911106956A CN 110760665 A CN110760665 A CN 110760665A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/18—Measures for using chemical processes for influencing the surface composition of castings, e.g. for increasing resistance to acid attack
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0052—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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Abstract
The invention discloses a production process of a high-wear-resistance roller, which comprises the following steps: step one, smelting: (1) selecting high-strength alloy steel, and putting the high-strength alloy steel into a high-temperature melting furnace to be melted into molten metal for later use; (2) selecting a wear-resistant zinc alloy material, putting the wear-resistant zinc alloy material into a high-temperature melting furnace to be melted into molten metal, and preserving heat for later use; step two, casting: (1) coating wear-resistant alloy powder with the thickness of 2-3mm in the inner cavity of the roller die, and standing for 10-15min for later use; (2) pouring the high-strength alloy steel melted into molten metal into the inner cavity of the roller die. According to the invention, the wear-resistant alloy powder is coated in the inner cavity of the die in the casting engineering, so that the wear-resistant strength of the roller can be increased, and the roller is subjected to hot-dip coating of wear-resistant zinc alloy after being prepared, so that the produced roller has high-strength hardness and toughness, the service life of the roller is prolonged, and the casting cost is reduced by adopting the production process, and the preparation is convenient and simple.
Description
Technical Field
The invention relates to the technical field of roller production, in particular to a production process of a high-wear-resistance roller.
Background
The roller is a tool for making metal produce plastic deformation, and is an important consumption component for determining efficiency of rolling mill and quality of rolled material, and is an important part on rolling mill of steel mill, and utilizes the pressure produced when a pair of rollers or a group of rollers roll to roll steel, and it mainly bears the influence of dynamic and static load, wear and temperature change when rolling.
Disclosure of Invention
The invention aims to provide a production process of a high-wear-resistance roller, which has the advantages of energy conservation and environmental protection and solves the problem that the existing production process of the high-wear-resistance roller generally only adopts a casting mode to obtain the high-wear-resistance roller, but the wear resistance of the wear-resistance roller is not more and more in line with the requirements of manufacturers.
In order to achieve the purpose, the invention provides the following technical scheme: the production process of the high-wear-resistance roller comprises the following steps:
step one, smelting:
(1) selecting high-strength alloy steel, and putting the high-strength alloy steel into a high-temperature melting furnace to be melted into molten metal for later use;
(2) selecting wear-resistant zinc alloy material, putting the wear-resistant zinc alloy material into a high-temperature melting furnace to be melted into molten metal, and preserving heat for later use.
Step two, casting:
(1) coating wear-resistant alloy powder with the thickness of 2-3mm in the inner cavity of the roller die, and standing for 10-15min for later use;
(2) pouring the high-strength alloy steel melted into molten metal into the inner cavity of the roller die, and after the molten metal of the high-strength alloy steel is solidified and formed, releasing pressure and demoulding to obtain a roller casting.
Step three, rough machining:
(1) measuring the length and the diameter of the obtained roll casting, wherein the roll casting is qualified for later use, and unqualified roll casting is melted in a melting furnace;
(2) and cutting the bulges on the surface of the roll casting by a cutting machine, and then polishing the burrs on the surface of the roll casting by a polisher.
Step four, heat treatment:
(1) putting the prepared roll casting into a normalizing furnace, normalizing, heating to 800 ℃ at 700-;
(2) and then quenching the roller casting after the roller casting is taken out of the furnace, and finally tempering the workpiece, wherein the temperature of the workpiece is controlled at 400-600 ℃ during tempering.
Step five, fine machining:
(1) immersing the roll casting prepared in the step one into the wear-resistant zinc alloy metal liquid prepared in the step one, and carrying out surface hot dipping wear-resistant zinc alloy treatment to form a wear-resistant zinc alloy layer with uniform thickness on the surface of the roll casting;
(2) the method comprises the steps of firstly, rapidly cooling a roll casting by air cooling, and then naturally cooling a workpiece in the air;
(3) and (4) finely polishing the roll casting prepared in the step.
And step six, detecting performance, flaw detection and the like:
(1) an eddy current detector is utilized to act on the surface of the roll casting through an alternating magnetic field, when cracks are detected, a defect signal is generated, and all areas with the defect signal are detected;
(2) carrying out surface ultrasonic flaw detection on the area with the flaw signal, screening the flaw signal, accurately positioning the flaw position, and carrying out magnetic powder or penetrant flaw detection on the area with the true flaw signal to detect specific flaws;
(3) and (5) packaging the qualified product and discharging the product out of the warehouse to obtain the high-wear-resistance roller.
Preferably, in the first step, the high-strength alloy steel comprises the following chemical components in percentage by mass: 0.1 to 0.5 percent of carbon, 1.5 to 2.3 percent of silicon, 5 to 15 percent of nickel, 0.5 to 2.2 percent of magnesium, 3.2 to 6.8 percent of copper, 0.1 to 0.7 percent of manganese, 0.03 to 0.15 percent of vanadium, and the balance of steel and inevitable impurities.
Preferably, the wear-resistant zinc alloy material in the second step comprises the following chemical components in percentage by mass: tic28-37%, Ni2.8-4.0%, Mo2.2-3.4%, Si4.5-6.8%, Mn0.7-1.9%, and zn for the rest.
Preferably, in the fourth step, the temperature rising speed of the normalizing is 80-90 ℃ per hour, and the tempering temperature is kept for 1-1.5 hours during tempering.
Preferably, in the fifth step, after the wear-resistant zinc is hot-dip plated, the temperature of the workpiece is kept within the range of 150 +/-40 ℃ for 1-1.2 hours.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the wear-resistant alloy powder is coated in the inner cavity of the die in the casting engineering, so that the wear-resistant strength of the roller can be increased, and the roller is subjected to hot-dip coating of wear-resistant zinc alloy after being prepared, so that the produced roller has high-strength hardness and toughness, the service life of the roller is prolonged, and the casting cost is reduced by adopting the production process, and the preparation is convenient and simple.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The production process of the high-wear-resistance roller comprises the following steps:
step one, smelting:
(1) selecting high-strength alloy steel, and putting the high-strength alloy steel into a high-temperature melting furnace to be melted into molten metal for later use;
(2) selecting wear-resistant zinc alloy material, putting the wear-resistant zinc alloy material into a high-temperature melting furnace to be melted into molten metal, and preserving heat for later use.
Step two, casting:
(1) coating wear-resistant alloy powder with the thickness of 2-3mm in the inner cavity of the roller die, and standing for 10-15min for later use;
(2) pouring the high-strength alloy steel melted into molten metal into the inner cavity of the roller die, and after the molten metal of the high-strength alloy steel is solidified and formed, releasing pressure and demoulding to obtain a roller casting.
Step three, rough machining:
(1) measuring the length and the diameter of the obtained roll casting, wherein the roll casting is qualified for later use, and unqualified roll casting is melted in a melting furnace;
(2) and cutting the bulges on the surface of the roll casting by a cutting machine, and then polishing the burrs on the surface of the roll casting by a polisher.
Step four, heat treatment:
(1) putting the prepared roll casting into a normalizing furnace, normalizing, heating to 800 ℃ at 700-;
(2) and then quenching the roller casting after the roller casting is taken out of the furnace, and finally tempering the workpiece, wherein the temperature of the workpiece is controlled at 400-600 ℃ during tempering.
Step five, fine machining:
(1) immersing the roll casting prepared in the step one into the wear-resistant zinc alloy metal liquid prepared in the step one, and carrying out surface hot dipping wear-resistant zinc alloy treatment to form a wear-resistant zinc alloy layer with uniform thickness on the surface of the roll casting;
(2) the method comprises the steps of firstly, rapidly cooling a roll casting by air cooling, and then naturally cooling a workpiece in the air;
(3) and (4) finely polishing the roll casting prepared in the step.
And step six, detecting performance, flaw detection and the like:
(1) an eddy current detector is utilized to act on the surface of the roll casting through an alternating magnetic field, when cracks are detected, a defect signal is generated, and all areas with the defect signal are detected;
(2) carrying out surface ultrasonic flaw detection on the area with the flaw signal, screening the flaw signal, accurately positioning the flaw position, and carrying out magnetic powder or penetrant flaw detection on the area with the true flaw signal to detect specific flaws;
(3) and (5) packaging the qualified product and discharging the product out of the warehouse to obtain the high-wear-resistance roller.
The first embodiment is as follows:
the production process of the high-wear-resistance roller comprises the following steps: step one, smelting: (1) selecting high-strength alloy steel, and putting the high-strength alloy steel into a high-temperature melting furnace to be melted into molten metal for later use; (2) selecting a wear-resistant zinc alloy material, putting the wear-resistant zinc alloy material into a high-temperature melting furnace to be melted into molten metal, and preserving heat for later use; step two, casting: (1) coating wear-resistant alloy powder with the thickness of 2-3mm in the inner cavity of the roller die, and standing for 10-15min for later use; (2) pouring the high-strength alloy steel melted into molten metal into the inner cavity of the roller die, and after the molten metal of the high-strength alloy steel is solidified and formed, releasing pressure and demoulding to obtain a roller casting; step three, rough machining: (1) measuring the length and the diameter of the obtained roll casting, wherein the roll casting is qualified for later use, and unqualified roll casting is melted in a melting furnace; (2) cutting the bulges on the surface of the roll casting by a cutting machine, and then polishing the burrs on the surface of the roll casting by a polisher; step four, heat treatment: (1) putting the prepared roll casting into a normalizing furnace, normalizing, heating to 800 ℃ at 700-; (2) then quenching the roller casting after the roller casting is taken out of the furnace, and finally tempering the workpiece, wherein the temperature of the workpiece is controlled at 400-600 ℃ during tempering; step five, fine machining: (1) immersing the roll casting prepared in the step one into the wear-resistant zinc alloy metal liquid prepared in the step one, and carrying out surface hot dipping wear-resistant zinc alloy treatment to form a wear-resistant zinc alloy layer with uniform thickness on the surface of the roll casting; (2) the method comprises the steps of firstly, rapidly cooling a roll casting by air cooling, and then naturally cooling a workpiece in the air; (3) finely polishing the roll casting prepared in the step; and step six, detecting performance, flaw detection and the like: (1) an eddy current detector is utilized to act on the surface of the roll casting through an alternating magnetic field, when cracks are detected, a defect signal is generated, and all areas with the defect signal are detected; (2) carrying out surface ultrasonic flaw detection on the area with the flaw signal, screening the flaw signal, accurately positioning the flaw position, and carrying out magnetic powder or penetrant flaw detection on the area with the true flaw signal to detect specific flaws; (3) and (5) packaging the qualified product and discharging the product out of the warehouse to obtain the high-wear-resistance roller.
Example two: in example one, the following steps were added:
the high-strength alloy steel in the first step comprises the following chemical components in percentage by mass: 0.1 to 0.5 percent of carbon, 1.5 to 2.3 percent of silicon, 5 to 15 percent of nickel, 0.5 to 2.2 percent of magnesium, 3.2 to 6.8 percent of copper, 0.1 to 0.7 percent of manganese, 0.03 to 0.15 percent of vanadium, and the balance of steel and inevitable impurities.
The production process of the high-wear-resistance roller comprises the following steps: step one, smelting: (1) selecting high-strength alloy steel, and putting the high-strength alloy steel into a high-temperature melting furnace to be melted into molten metal for later use; (2) selecting a wear-resistant zinc alloy material, putting the wear-resistant zinc alloy material into a high-temperature melting furnace to be melted into molten metal, and preserving heat for later use; step two, casting: (1) coating wear-resistant alloy powder with the thickness of 2-3mm in the inner cavity of the roller die, and standing for 10-15min for later use; (2) pouring the high-strength alloy steel melted into molten metal into the inner cavity of the roller die, and after the molten metal of the high-strength alloy steel is solidified and formed, releasing pressure and demoulding to obtain a roller casting; step three, rough machining: (1) measuring the length and the diameter of the obtained roll casting, wherein the roll casting is qualified for later use, and unqualified roll casting is melted in a melting furnace; (2) cutting the bulges on the surface of the roll casting by a cutting machine, and then polishing the burrs on the surface of the roll casting by a polisher; step four, heat treatment: (1) putting the prepared roll casting into a normalizing furnace, normalizing, heating to 800 ℃ at 700-; (2) then quenching the roller casting after the roller casting is taken out of the furnace, and finally tempering the workpiece, wherein the temperature of the workpiece is controlled at 400-600 ℃ during tempering; step five, fine machining: (1) immersing the roll casting prepared in the step one into the wear-resistant zinc alloy metal liquid prepared in the step one, and carrying out surface hot dipping wear-resistant zinc alloy treatment to form a wear-resistant zinc alloy layer with uniform thickness on the surface of the roll casting; (2) the method comprises the steps of firstly, rapidly cooling a roll casting by air cooling, and then naturally cooling a workpiece in the air; (3) finely polishing the roll casting prepared in the step; and step six, detecting performance, flaw detection and the like: (1) an eddy current detector is utilized to act on the surface of the roll casting through an alternating magnetic field, when cracks are detected, a defect signal is generated, and all areas with the defect signal are detected; (2) carrying out surface ultrasonic flaw detection on the area with the flaw signal, screening the flaw signal, accurately positioning the flaw position, and carrying out magnetic powder or penetrant flaw detection on the area with the true flaw signal to detect specific flaws; (3) and (5) packaging the qualified product and discharging the product out of the warehouse to obtain the high-wear-resistance roller.
Example three:
in example two, the following steps were added:
the wear-resistant zinc alloy material in the second step comprises the following chemical components in percentage by mass: tic28-37%, Ni2.8-4.0%, Mo2.2-3.4%, Si4.5-6.8%, Mn0.7-1.9%, and zn for the rest.
The production process of the high-wear-resistance roller comprises the following steps: step one, smelting: (1) selecting high-strength alloy steel, and putting the high-strength alloy steel into a high-temperature melting furnace to be melted into molten metal for later use; (2) selecting a wear-resistant zinc alloy material, putting the wear-resistant zinc alloy material into a high-temperature melting furnace to be melted into molten metal, and preserving heat for later use; step two, casting: (1) coating wear-resistant alloy powder with the thickness of 2-3mm in the inner cavity of the roller die, and standing for 10-15min for later use; (2) pouring the high-strength alloy steel melted into molten metal into the inner cavity of the roller die, and after the molten metal of the high-strength alloy steel is solidified and formed, releasing pressure and demoulding to obtain a roller casting; step three, rough machining: (1) measuring the length and the diameter of the obtained roll casting, wherein the roll casting is qualified for later use, and unqualified roll casting is melted in a melting furnace; (2) cutting the bulges on the surface of the roll casting by a cutting machine, and then polishing the burrs on the surface of the roll casting by a polisher; step four, heat treatment: (1) putting the prepared roll casting into a normalizing furnace, normalizing, heating to 800 ℃ at 700-; (2) then quenching the roller casting after the roller casting is taken out of the furnace, and finally tempering the workpiece, wherein the temperature of the workpiece is controlled at 400-600 ℃ during tempering; step five, fine machining: (1) immersing the roll casting prepared in the step one into the wear-resistant zinc alloy metal liquid prepared in the step one, and carrying out surface hot dipping wear-resistant zinc alloy treatment to form a wear-resistant zinc alloy layer with uniform thickness on the surface of the roll casting; (2) the method comprises the steps of firstly, rapidly cooling a roll casting by air cooling, and then naturally cooling a workpiece in the air; (3) finely polishing the roll casting prepared in the step; and step six, detecting performance, flaw detection and the like: (1) an eddy current detector is utilized to act on the surface of the roll casting through an alternating magnetic field, when cracks are detected, a defect signal is generated, and all areas with the defect signal are detected; (2) carrying out surface ultrasonic flaw detection on the area with the flaw signal, screening the flaw signal, accurately positioning the flaw position, and carrying out magnetic powder or penetrant flaw detection on the area with the true flaw signal to detect specific flaws; (3) and (5) packaging the qualified product and discharging the product out of the warehouse to obtain the high-wear-resistance roller.
Example four:
in example three, the following steps were added:
in the fourth step, the normalizing temperature rise speed is 80-90 ℃ per hour, and the tempering temperature is kept for 1-1.5 hours during tempering.
The production process of the high-wear-resistance roller comprises the following steps: step one, smelting: (1) selecting high-strength alloy steel, and putting the high-strength alloy steel into a high-temperature melting furnace to be melted into molten metal for later use; (2) selecting a wear-resistant zinc alloy material, putting the wear-resistant zinc alloy material into a high-temperature melting furnace to be melted into molten metal, and preserving heat for later use; step two, casting: (1) coating wear-resistant alloy powder with the thickness of 2-3mm in the inner cavity of the roller die, and standing for 10-15min for later use; (2) pouring the high-strength alloy steel melted into molten metal into the inner cavity of the roller die, and after the molten metal of the high-strength alloy steel is solidified and formed, releasing pressure and demoulding to obtain a roller casting; step three, rough machining: (1) measuring the length and the diameter of the obtained roll casting, wherein the roll casting is qualified for later use, and unqualified roll casting is melted in a melting furnace; (2) cutting the bulges on the surface of the roll casting by a cutting machine, and then polishing the burrs on the surface of the roll casting by a polisher; step four, heat treatment: (1) putting the prepared roll casting into a normalizing furnace, normalizing, heating to 800 ℃ at 700-; (2) then quenching the roller casting after the roller casting is taken out of the furnace, and finally tempering the workpiece, wherein the temperature of the workpiece is controlled at 400-600 ℃ during tempering; step five, fine machining: (1) immersing the roll casting prepared in the step one into the wear-resistant zinc alloy metal liquid prepared in the step one, and carrying out surface hot dipping wear-resistant zinc alloy treatment to form a wear-resistant zinc alloy layer with uniform thickness on the surface of the roll casting; (2) the method comprises the steps of firstly, rapidly cooling a roll casting by air cooling, and then naturally cooling a workpiece in the air; (3) finely polishing the roll casting prepared in the step; and step six, detecting performance, flaw detection and the like: (1) an eddy current detector is utilized to act on the surface of the roll casting through an alternating magnetic field, when cracks are detected, a defect signal is generated, and all areas with the defect signal are detected; (2) carrying out surface ultrasonic flaw detection on the area with the flaw signal, screening the flaw signal, accurately positioning the flaw position, and carrying out magnetic powder or penetrant flaw detection on the area with the true flaw signal to detect specific flaws; (3) and (5) packaging the qualified product and discharging the product out of the warehouse to obtain the high-wear-resistance roller.
Example five:
in example four, the following steps were added:
and in the fifth step, after the wear-resistant zinc is plated by hot dipping, the temperature of the workpiece is kept within the range of 150 +/-40 ℃ for 1-1.2 h.
The production process of the high-wear-resistance roller comprises the following steps: step one, smelting: (1) selecting high-strength alloy steel, and putting the high-strength alloy steel into a high-temperature melting furnace to be melted into molten metal for later use; (2) selecting a wear-resistant zinc alloy material, putting the wear-resistant zinc alloy material into a high-temperature melting furnace to be melted into molten metal, and preserving heat for later use; step two, casting: (1) coating wear-resistant alloy powder with the thickness of 2-3mm in the inner cavity of the roller die, and standing for 10-15min for later use; (2) pouring the high-strength alloy steel melted into molten metal into the inner cavity of the roller die, and after the molten metal of the high-strength alloy steel is solidified and formed, releasing pressure and demoulding to obtain a roller casting; step three, rough machining: (1) measuring the length and the diameter of the obtained roll casting, wherein the roll casting is qualified for later use, and unqualified roll casting is melted in a melting furnace; (2) cutting the bulges on the surface of the roll casting by a cutting machine, and then polishing the burrs on the surface of the roll casting by a polisher; step four, heat treatment: (1) putting the prepared roll casting into a normalizing furnace, normalizing, heating to 800 ℃ at 700-; (2) then quenching the roller casting after the roller casting is taken out of the furnace, and finally tempering the workpiece, wherein the temperature of the workpiece is controlled at 400-600 ℃ during tempering; step five, fine machining: (1) immersing the roll casting prepared in the step one into the wear-resistant zinc alloy metal liquid prepared in the step one, and carrying out surface hot dipping wear-resistant zinc alloy treatment to form a wear-resistant zinc alloy layer with uniform thickness on the surface of the roll casting; (2) the method comprises the steps of firstly, rapidly cooling a roll casting by air cooling, and then naturally cooling a workpiece in the air; (3) finely polishing the roll casting prepared in the step; and step six, detecting performance, flaw detection and the like: (1) an eddy current detector is utilized to act on the surface of the roll casting through an alternating magnetic field, when cracks are detected, a defect signal is generated, and all areas with the defect signal are detected; (2) carrying out surface ultrasonic flaw detection on the area with the flaw signal, screening the flaw signal, accurately positioning the flaw position, and carrying out magnetic powder or penetrant flaw detection on the area with the true flaw signal to detect specific flaws; (3) and (5) packaging the qualified product and discharging the product out of the warehouse to obtain the high-wear-resistance roller.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The production process of the high-wear-resistance roller is characterized by comprising the following steps of: the production process comprises the following steps:
step one, smelting:
(1) selecting high-strength alloy steel, and putting the high-strength alloy steel into a high-temperature melting furnace to be melted into molten metal for later use;
(2) selecting a wear-resistant zinc alloy material, putting the wear-resistant zinc alloy material into a high-temperature melting furnace to be melted into molten metal, and preserving heat for later use;
step two, casting:
(1) coating wear-resistant alloy powder with the thickness of 2-3mm in the inner cavity of the roller die, and standing for 10-15min for later use;
(2) pouring the high-strength alloy steel melted into molten metal into the inner cavity of the roller die, and after the molten metal of the high-strength alloy steel is solidified and formed, releasing pressure and demoulding to obtain a roller casting;
step three, rough machining:
(1) measuring the length and the diameter of the obtained roll casting, wherein the roll casting is qualified for later use, and unqualified roll casting is melted in a melting furnace;
(2) cutting the bulges on the surface of the roll casting by a cutting machine, and then polishing the burrs on the surface of the roll casting by a polisher;
step four, heat treatment:
(1) putting the prepared roll casting into a normalizing furnace, normalizing, heating to 800 ℃ at 700-;
(2) then quenching the roller casting after the roller casting is taken out of the furnace, and finally tempering the workpiece, wherein the temperature of the workpiece is controlled at 400-600 ℃ during tempering;
step five, fine machining:
(1) immersing the roll casting prepared in the step one into the wear-resistant zinc alloy metal liquid prepared in the step one, and carrying out surface hot dipping wear-resistant zinc alloy treatment to form a wear-resistant zinc alloy layer with uniform thickness on the surface of the roll casting;
(2) the method comprises the steps of firstly, rapidly cooling a roll casting by air cooling, and then naturally cooling a workpiece in the air;
(3) finely polishing the roll casting prepared in the step;
and step six, detecting performance, flaw detection and the like:
(1) an eddy current detector is utilized to act on the surface of the roll casting through an alternating magnetic field, when cracks are detected, a defect signal is generated, and all areas with the defect signal are detected;
(2) carrying out surface ultrasonic flaw detection on the area with the flaw signal, screening the flaw signal, accurately positioning the flaw position, and carrying out magnetic powder or penetrant flaw detection on the area with the true flaw signal to detect specific flaws;
(3) and (5) packaging the qualified product and discharging the product out of the warehouse to obtain the high-wear-resistance roller.
2. The production process of the high wear-resistant roller according to claim 1, characterized in that: the high-strength alloy steel in the first step comprises the following chemical components in percentage by mass: 0.1 to 0.5 percent of carbon, 1.5 to 2.3 percent of silicon, 5 to 15 percent of nickel, 0.5 to 2.2 percent of magnesium, 3.2 to 6.8 percent of copper, 0.1 to 0.7 percent of manganese, 0.03 to 0.15 percent of vanadium, and the balance of steel and inevitable impurities.
3. The production process of the high wear-resistant roller according to claim 1, characterized in that: the wear-resistant zinc alloy material in the second step comprises the following chemical components in percentage by mass: tic28-37%, Ni2.8-4.0%, Mo2.2-3.4%, Si4.5-6.8%, Mn0.7-1.9%, and zn for the rest.
4. The production process of the high wear-resistant roller according to claim 1, characterized in that: in the fourth step, the normalizing temperature rise speed is 80-90 ℃ per hour, and the tempering temperature is kept for 1-1.5 hours during tempering.
5. The production process of the high wear-resistant roller according to claim 1, characterized in that: and in the fifth step, after the wear-resistant zinc is plated by hot dipping, the temperature of the workpiece is kept within the range of 150 +/-40 ℃ for 1-1.2 h.
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| CN113399627A (en) * | 2021-04-29 | 2021-09-17 | 徐州鹏盛铸造有限公司 | Casting process for machine tool component |
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