CN116949251A - Deep quenching layer cold rolling working roller and manufacturing method thereof - Google Patents
Deep quenching layer cold rolling working roller and manufacturing method thereof Download PDFInfo
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- CN116949251A CN116949251A CN202310597692.1A CN202310597692A CN116949251A CN 116949251 A CN116949251 A CN 116949251A CN 202310597692 A CN202310597692 A CN 202310597692A CN 116949251 A CN116949251 A CN 116949251A
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- 238000010791 quenching Methods 0.000 title claims abstract description 51
- 230000000171 quenching effect Effects 0.000 title claims abstract description 50
- 238000005097 cold rolling Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000000137 annealing Methods 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 238000009792 diffusion process Methods 0.000 claims abstract description 22
- 239000000126 substance Substances 0.000 claims abstract description 17
- 238000009835 boiling Methods 0.000 claims abstract description 14
- 238000003754 machining Methods 0.000 claims abstract description 14
- 238000005242 forging Methods 0.000 claims abstract description 8
- 238000003723 Smelting Methods 0.000 claims abstract description 7
- 238000005261 decarburization Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 230000003647 oxidation Effects 0.000 claims abstract description 7
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 7
- 239000002893 slag Substances 0.000 claims abstract description 7
- 238000005496 tempering Methods 0.000 claims description 50
- 238000000034 method Methods 0.000 claims description 15
- 239000012535 impurity Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 238000006356 dehydrogenation reaction Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 238000009827 uniform distribution Methods 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 description 4
- 230000035882 stress Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- ZAHRKKWIAAJSAO-UHFFFAOYSA-N rapamycin Natural products COCC(O)C(=C/C(C)C(=O)CC(OC(=O)C1CCCCN1C(=O)C(=O)C2(O)OC(CC(OC)C(=CC=CC=CC(C)CC(C)C(=O)C)C)CCC2C)C(C)CC3CCC(O)C(C3)OC)C ZAHRKKWIAAJSAO-UHFFFAOYSA-N 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- QFJCIRLUMZQUOT-HPLJOQBZSA-N sirolimus Chemical compound C1C[C@@H](O)[C@H](OC)C[C@@H]1C[C@@H](C)[C@H]1OC(=O)[C@@H]2CCCCN2C(=O)C(=O)[C@](O)(O2)[C@H](C)CC[C@H]2C[C@H](OC)/C(C)=C/C=C/C=C/[C@@H](C)C[C@@H](C)C(=O)[C@H](OC)[C@H](O)/C(C)=C/[C@@H](C)C(=O)C1 QFJCIRLUMZQUOT-HPLJOQBZSA-N 0.000 description 1
- 229960002930 sirolimus Drugs 0.000 description 1
Classifications
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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
-
- 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
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- 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
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
-
- 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
- C21D1/32—Soft annealing, e.g. spheroidising
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a deep quenching layer cold rolling working roller and a manufacturing method thereof, comprising the following steps: s1, electric furnace smelting: mixing the metal raw materials according to chemical components, putting the mixed metal raw materials into an electric furnace, heating and melting the mixed metal raw materials at 1000 ℃, boiling the mixed metal raw materials at Wen Jilie high in oxidation period, automatically flowing slag, and enabling pure boiling time to be more than or equal to 10 parts and decarburization amount to be more than or equal to 0.3%; s2, oil pressure rapid forging and diffusion annealing: the diffusion annealing temperature is 1100-1200 ℃ and the annealing time is 5 hours; s3, spheroidizing annealing: annealing at 870 ℃ for 7h; s4, rough machining; s5, ultrasonic flaw detection; s6, heat treatment; s7, finish machining. According to the invention, before heat treatment, the steel ingot is subjected to diffusion annealing and spheroidizing annealing, so that the chemical components and microstructure of the steel ingot can be reduced or eliminated, and diffusion dehydrogenation can be realized, so that the spheroidizing structure of the roller blank is good, and the roller blank has no flaky carbide, has complete carbide particles, uniform distribution and good processability and penetrating property.
Description
Technical Field
The invention relates to the field of cold-rolling working rolls, in particular to a deep quenching hard layer cold-rolling working roll and a manufacturing method thereof.
Background
At present, MC5 steel is widely used for manufacturing cold-rolled working rolls due to excellent performance, and the surfacing metal is required to have high hardness, high crack resistance and high strength and toughness.
When the cold rolling working roll is rolled and rolled, the surface of the roll body is required to bear larger contact stress, alternating stress and friction force, so that the traditional cold rolling working roll is easy to generate hot crack in the rolling process, the conditions of working roll explosion, peeling and breakage are easy to occur, meanwhile, the cold rolling working roll is easy to bend and deform under the action of larger external stress, the service life is reduced, the requirements of customers cannot be met, the quality of the cold rolling working roll is mostly dependent on the metallographic structure treatment quality of a heat treatment processing technology, the condition that the hardness of the roll surface is uneven is easily caused due to uneven metallographic structure distribution of the cold rolling working roll, the overall use strength of the working roll is reduced, and the condition that the hardening layer of the surface of the working roll is shallow and the hardness distribution is uneven is caused by the traditional heat treatment technology of tempering and cooling after quenching, so that the hardness and stability of the surface of the working roll are reduced.
Disclosure of Invention
The invention aims to provide a manufacturing method of a deep quenching layer cold rolling working roller.
The invention has the innovation points that the chemical components and microstructure of the steel ingot can be reduced or eliminated by diffusion annealing and spheroidizing annealing before heat treatment, and the diffusion dehydrogenation can be realized, so that the spheroidizing structure of the roller blank is good, the flaky carbide is avoided, the carbide particles are complete, the distribution is uniform, and the processing performance and the penetrating property are good.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a manufacturing method of a deep quenching layer cold rolling working roller comprises the following steps: s1, electric furnace smelting: mixing the metal raw materials according to chemical components, putting the mixed metal raw materials into an electric furnace, heating and melting the mixed metal raw materials at 1000 ℃, boiling the mixed metal raw materials at Wen Jilie high in oxidation period, automatically flowing slag, and enabling pure boiling time to be more than or equal to 10 parts and decarburization amount to be more than or equal to 0.3%; s2, oil pressure rapid forging and diffusion annealing: the diffusion annealing temperature is 1100-1200 ℃ and the annealing time is 5 hours; s3, spheroidizing annealing: annealing at 870 ℃ for 7h; s4, rough machining; s5, ultrasonic flaw detection; s6, heat treatment;
s7, finish machining. The diffusion annealing and spheroidizing annealing are carried out before the heat treatment, so that the chemical components and microstructure of the steel ingot can be reduced or eliminated, the diffusion dehydrogenation can be carried out, the occurrence of internal stress after the roller forging is avoided, meanwhile, spherical carbide can be formed, and the netlike carbide is eliminated, so that the spheroidized structure of the roller blank is good, the flaky carbide is avoided, carbide particles are complete, the distribution is uniform, and the processability and the penetrating property are good.
Preferably, the heat treatment in step S6 comprises the steps of: s61, quenching and tempering; s62, preheating a roller: the preheating temperature is 500 ℃, and the preheating time is 4 hours; s63, double-frequency quenching: the method comprises the steps of firstly, preheating the surface of a roller by using an intermediate frequency coil, and then, carrying out supplementary heating by using the intermediate frequency coil before quenching treatment to balance the temperature of the roller surface, wherein the quenching temperature is 1050-1150 ℃; s64, tempering at low temperature: tempering temperature is 500-650 ℃, tempering is carried out for 3-4 times, and tempering time is 3h. The hardening and tempering can thoroughly remove netlike carbide to obtain the sirolimus or sorbite, increase the bending strength, meet the requirements of the roll neck on the aspect of hardness, and lay a good foundation for subsequent processing.
Preferably, in step S61, the quenching and tempering process includes quenching and high temperature tempering, wherein the quenching temperature is 580 ℃ and the high temperature tempering temperature is 600 ℃.
Preferably, in step S63, the intermediate frequency coil is additionally heated to 220 ℃ to 500 ℃.
The invention also provides a working roll manufactured by the deep quenching layer cold rolling manufacturing method, which comprises the following chemical components in percentage by mass: c:0.8 to 0.9 percent; si 0.7-1%; cr:4.5 to 5.5 percent; ni:0.4 to 0.6 percent; mo:0.2 to 0.4 percent; v:0.1 to 0.2 percent, and the balance of Fe and unavoidable impurities.
The beneficial effects of the invention are as follows:
1. according to the invention, before heat treatment, the steel ingot is subjected to diffusion annealing and spheroidizing annealing, so that the chemical components and microstructure of the steel ingot can be reduced or eliminated, and diffusion dehydrogenation can be realized, so that the spheroidizing structure of the roller blank is good, and the roller blank has no flaky carbide, has complete carbide particles, uniform distribution and good processability and penetrating property.
Detailed Description
The following description of the technical solution in the embodiments of the present invention is clear and complete.
The described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
A manufacturing method of a deep quenching layer cold rolling working roller comprises the following steps:
s1, electric furnace smelting: mixing the metal raw materials according to chemical components, putting the mixed metal raw materials into an electric furnace, heating and melting the mixed metal raw materials at 1000 ℃, boiling the mixed metal raw materials at Wen Jilie high in oxidation period, automatically flowing slag, and enabling pure boiling time to be more than or equal to 10 parts and decarburization amount to be more than or equal to 0.3%;
s2, oil pressure rapid forging and diffusion annealing: the diffusion annealing temperature is 1100-1200 ℃ and the annealing time is 5 hours;
s3, spheroidizing annealing: annealing at 870 ℃ for 7h;
s4, rough machining;
s5, ultrasonic flaw detection;
s6, heat treatment;
s61, hardening and tempering: quenching and tempering treatment comprises quenching and high-temperature tempering, wherein the quenching temperature is 580 ℃ and the high-temperature tempering temperature is 600 ℃;
s62, preheating a roller: the preheating temperature is 500 ℃, and the preheating time is 4 hours;
s63, double-frequency quenching: the method comprises the steps of firstly, preheating the surface of a roller by using an intermediate frequency coil, and then, carrying out supplementary heating by using the intermediate frequency coil before quenching treatment to balance the temperature of the roller surface, wherein the quenching temperature is 1050-1150 ℃;
s64, tempering at low temperature: tempering temperature is 500-650 ℃, tempering is carried out for 3-4 times, and tempering time is 3h;
s7, finish machining.
Example 2
The method comprises the following steps:
s1, electric furnace smelting: mixing the metal raw materials according to chemical components, putting the mixed metal raw materials into an electric furnace, heating and melting the mixed metal raw materials at 1000 ℃, boiling the mixed metal raw materials at Wen Jilie high in oxidation period, automatically flowing slag, and enabling pure boiling time to be more than or equal to 10 parts and decarburization amount to be more than or equal to 0.3%;
s2, oil pressure rapid forging and diffusion annealing: the diffusion annealing temperature is 1100 ℃, and the annealing is carried out for 5 hours;
s3, spheroidizing annealing: annealing at 870 ℃ for 7h;
s4, rough machining;
s5, ultrasonic flaw detection;
s6, heat treatment;
s61, hardening and tempering: quenching and tempering treatment comprises quenching and high-temperature tempering, wherein the quenching temperature is 580 ℃ and the high-temperature tempering temperature is 600 ℃;
s62, preheating a roller: the preheating temperature is 500 ℃, and the preheating time is 4 hours;
s63, double-frequency quenching: the method comprises the steps of firstly, preheating the surface of a roller by using an intermediate frequency coil, and then, carrying out supplementary heating by using the intermediate frequency coil before quenching treatment to balance the temperature of the roller surface, wherein the quenching temperature is 1050 ℃;
s64, tempering at low temperature: tempering temperature is 500 ℃, tempering is carried out for 3 times, and tempering time is 3 hours.
S7, finish machining.
Example 3
The method comprises the following steps:
s1, electric furnace smelting: mixing the metal raw materials according to chemical components, putting the mixed metal raw materials into an electric furnace, heating and melting the mixed metal raw materials at 1000 ℃, boiling the mixed metal raw materials at Wen Jilie high in oxidation period, automatically flowing slag, and enabling pure boiling time to be more than or equal to 10 parts and decarburization amount to be more than or equal to 0.3%;
s2, oil pressure rapid forging and diffusion annealing: the diffusion annealing temperature is 1150 ℃, and the annealing is carried out for 5 hours;
s3, spheroidizing annealing: annealing at 870 ℃ for 7h;
s4, rough machining;
s5, ultrasonic flaw detection;
s6, heat treatment;
s61, hardening and tempering: quenching and tempering treatment comprises quenching and high-temperature tempering, wherein the quenching temperature is 580 ℃ and the high-temperature tempering temperature is 600 ℃;
s62, preheating a roller: the preheating temperature is 500 ℃, and the preheating time is 4 hours;
s63, double-frequency quenching: the method comprises the steps of firstly, preheating the surface of a roller by using an intermediate frequency coil, and then, carrying out supplementary heating by using the intermediate frequency coil before quenching treatment to balance the temperature of the roller surface, wherein the quenching temperature is 1100 ℃;
s64, tempering at low temperature: tempering temperature is 550 ℃, tempering is carried out for 3 times, and tempering time is 3 hours.
S7, finish machining.
Example 4
The method comprises the following steps:
s1, electric furnace smelting: mixing the metal raw materials according to chemical components, putting the mixed metal raw materials into an electric furnace, heating and melting the mixed metal raw materials at 1000 ℃, boiling the mixed metal raw materials at Wen Jilie high in oxidation period, automatically flowing slag, and enabling pure boiling time to be more than or equal to 10 parts and decarburization amount to be more than or equal to 0.3%;
s2, oil pressure rapid forging and diffusion annealing: the diffusion annealing temperature is 1200 ℃, and the annealing is carried out for 5 hours;
s3, spheroidizing annealing: annealing at 870 ℃ for 7h;
s4, rough machining;
s5, ultrasonic flaw detection;
s6, heat treatment;
s61, hardening and tempering: quenching and tempering treatment comprises quenching and high-temperature tempering, wherein the quenching temperature is 580 ℃ and the high-temperature tempering temperature is 600 ℃;
s62, preheating a roller: the preheating temperature is 500 ℃, and the preheating time is 4 hours;
s63, double-frequency quenching: the method comprises the steps of firstly, preheating the surface of a roller by using an intermediate frequency coil, and then, carrying out supplementary heating by using the intermediate frequency coil before quenching treatment to balance the temperature of the roller surface, wherein the quenching temperature is 1150 ℃;
s64, tempering at low temperature: tempering temperature is 650 ℃, tempering is carried out for 3-4 times, and tempering time is 3h.
S7, finish machining.
Example 5
The deep hardening layer cold rolling working roll comprises the following chemical components in percentage by mass:
c:0.8 to 0.9 percent; si 0.7-1%; cr:4.5 to 5.5 percent; ni:0.4 to 0.6 percent; mo:0.2 to 0.4 percent; v:0.1 to 0.2 percent, and the balance of Fe and unavoidable impurities.
Example 6
Comprises the following chemical components in percentage by mass:
c: 0.8%; 0.7% of Si; cr: 4.5%; ni:0.4%; mo: 0.2%; v:0.1% of Fe and the balance of unavoidable impurities.
Example 7
Comprises the following chemical components in percentage by mass:
c: 0.85%; si 0.9%; cr: 5%; ni:0.5%; mo: 0.3%; v:0.15% of Fe and the balance of unavoidable impurities.
Example 8
Comprises the following chemical components in percentage by mass:
c: 0.9%; 1% of Si; cr: 5.5%; ni:0.6%; mo: 0.4%; v:0.2% of Fe and the balance of unavoidable impurities.
The described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Claims (5)
1. A method for manufacturing a deep quenching layer cold rolling working roller is characterized in that,
the method comprises the following steps:
s1, electric furnace smelting: mixing the metal raw materials according to chemical components, putting the mixed metal raw materials into an electric furnace, heating and melting the mixed metal raw materials at 1000 ℃, boiling the mixed metal raw materials at Wen Jilie high in oxidation period, automatically flowing slag, and enabling pure boiling time to be more than or equal to 10 parts and decarburization amount to be more than or equal to 0.3%;
s2, oil pressure rapid forging and diffusion annealing: the diffusion annealing temperature is 1100-1200 ℃ and the annealing time is 5 hours;
s3, spheroidizing annealing: annealing at 870 ℃ for 7h;
s4, rough machining;
s5, ultrasonic flaw detection;
s6, heat treatment;
s7, finish machining.
2. The method for manufacturing the deep quenching layer cold rolling working roll according to claim 1, wherein,
the heat treatment in step S6 includes the steps of:
s61, quenching and tempering;
s62, preheating a roller: the preheating temperature is 500 ℃, and the preheating time is 4 hours;
s63, double-frequency quenching: the method comprises the steps of firstly, preheating the surface of a roller by using an intermediate frequency coil, and then, carrying out supplementary heating by using the intermediate frequency coil before quenching treatment to balance the temperature of the roller surface, wherein the quenching temperature is 1050-1150 ℃;
s64, tempering at low temperature: tempering temperature is 500-650 ℃, tempering is carried out for 3-4 times, and tempering time is 3h.
3. The method for manufacturing the deep quenching layer cold rolling working roll according to claim 2, wherein,
in step S61, the tempering includes quenching and high temperature tempering, the quenching temperature being 580 ℃, and the high temperature tempering temperature being 600 ℃.
4. The method for manufacturing the deep quenching layer cold rolling working roll according to claim 2, wherein,
in step S63, the intermediate frequency coil is additionally heated to 220-500 ℃.
5. A work roll manufactured by the deep quench hardening cold rolling manufacturing method according to any one of claims 1 to 4, characterized in that,
comprises the following chemical components in percentage by mass:
c:0.8 to 0.9 percent; si 0.7-1%; cr:4.5 to 5.5 percent; ni:0.4 to 0.6 percent; mo:0.2 to 0.4 percent; v:0.1 to 0.2 percent, and the balance of Fe and unavoidable impurities.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310597692.1A CN116949251A (en) | 2023-05-25 | 2023-05-25 | Deep quenching layer cold rolling working roller and manufacturing method thereof |
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| CN202310597692.1A CN116949251A (en) | 2023-05-25 | 2023-05-25 | Deep quenching layer cold rolling working roller and manufacturing method thereof |
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