CN117385160A - Roller heat treatment process of 100CrMnSi6-4 material - Google Patents
Roller heat treatment process of 100CrMnSi6-4 material Download PDFInfo
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- CN117385160A CN117385160A CN202311359544.2A CN202311359544A CN117385160A CN 117385160 A CN117385160 A CN 117385160A CN 202311359544 A CN202311359544 A CN 202311359544A CN 117385160 A CN117385160 A CN 117385160A
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- CN
- China
- Prior art keywords
- roller
- 100crmnsi6
- cooling
- temperature
- furnace
- Prior art date
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- 239000000463 material Substances 0.000 title claims abstract description 26
- 238000010438 heat treatment Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 238000005496 tempering Methods 0.000 claims abstract description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 239000001294 propane Substances 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 229910002651 NO3 Inorganic materials 0.000 claims description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005261 decarburization Methods 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000001737 promoting effect Effects 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
Classifications
-
- 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
- C21D9/36—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for balls; for rollers
-
- 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
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
- C21D11/00—Process control or regulation for heat treatments
-
- 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
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- 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
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
-
- 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
- Y02P10/20—Recycling
Abstract
The invention relates to a roller heat treatment process of a 100CrMnSi6-4 material, which comprises the steps of conveying a cleaned and dried roller into an austenitizing furnace; the austenitizing furnace uses a protective atmosphere of nitrogen, methanol and propane; cooling the austenitized roller; cooling the roller, and then cooling the roller for the second time; the roller after secondary cooling enters into the washing water shower; the roller after the post-cleaning and water spraying enters a tempering furnace; the residual austenite of the roller is controlled below 5%, the roller size is more stable, the surface hardness of the roller reaches HRC59-63, and the core hardness of the 1/10 diameter is HRC58.5, which is more than or equal to HRC56.5. The production process has the advantages that the roller with the diameter of more than 50mm and 80mm produced by using the 100CrMnSi6-4 material can also meet the quality requirement of the roller produced by using the 100CrM7o-3 bearing steel material, thereby greatly reducing the production cost, meeting the quality requirements of different clients and strongly promoting the benefit of companies.
Description
Technical Field
The invention relates to the field of bearing roller processing, in particular to a roller heat treatment process of a 100CrMnSi6-4 material.
Background
The difference between the content of molybdenum element in the bearing steel 100CrMnSi6-4 material and the content of molybdenum element in the 100CrM7o-3 bearing steel and the austenitizing temperature is that the large-sized rollers with the diameter of more than 50 are produced by turning, heat treatment, grinding, superfinishing and flaw detection of the material 100CrMo7-3 due to the limitation of the hardenability and the hardenability of the 100CrMnSi6-4 bearing steel material.
The steel cost accounts for more than 60% of the production cost of the roller. In order to solve the problem of production cost, how to realize a heat treatment process for replacing 100CrMnSi6-4 material with 100CrM7o-3 material, and improve the economic benefit of companies.
Disclosure of Invention
In order to solve the technical problems, the invention provides a roller heat treatment process of a 100CrMnSi6-4 material, which is perfect, reduces the cost and has qualified product performance.
The technical scheme of the invention is as follows:
a roller heat treatment process of a 100CrMnSi6-4 material is characterized in that,
step one, conveying the cleaned and dried roller into an austenitizing furnace, wherein the austenitizing temperature is 835+/-5 ℃;
the austenitizing furnace uses a protective atmosphere of nitrogen, methanol and propane, and the carbon potential of the austenitizing furnace is precisely controlled through an oxygen probe and a carbon potential controller, so that decarburization of a roller working surface and a non-working surface is avoided;
step three, the austenitized roller enters a nitrate tank at 160-170 ℃ for cooling, and the cooling time of the roller is controlled to be 25 minutes, so that the surface temperature of the roller is ensured to be consistent with the core temperature, and the occurrence of roller temperature return is avoided;
step four, the cooled roller passes through an air cooling table (the air cooling time is 24 minutes) with four stations, and the temperature of the surface of the roller and the temperature of the core part are reduced to 65 ℃ before the roller enters secondary cooling;
fifthly, the air-cooled roller enters secondary cooling, and the secondary cooling temperature is controlled to be 5-10 ℃, so that the purposes of reducing residual austenite and stabilizing the size of the roller are achieved;
step six, cleaning and spraying water after entering the secondarily cooled roller, so as to sufficiently remove residual salt on the surface of the roller and in a big roller top pinhole, and avoid corrosion to heating components of a tempering furnace;
step seven, the roller which is cleaned and sprayed with water enters a tempering furnace;
and step eight, tempering the roller at 230 ℃ for 300 minutes, and then performing air cooling, wherein the tempering of the roller is sufficient, the residual austenite of the roller is controlled below 5%, the roller size is more stable, the surface hardness of the roller reaches HRC59-63, and the core hardness of the 1/10 diameter part is HRC58.5, and is more than or equal to HRC56.5.
A roller with a diameter of more than 50mm and 80mm is produced by adopting a 100CrMnSi6-4 material.
The invention has the advantages that the production process of the invention uses the roller with the diameter of more than 50mm and 80mm produced by using the 100CrMnSi6-4 material, and the quality requirement of the roller produced by using the 100CrM7o-3 bearing steel material is also met, thus greatly reducing the production cost, meeting the quality requirements of different clients and strongly promoting the benefit of companies.
Detailed Description
The steel cost accounts for more than 60% of the production cost of the roller. In order to solve the problem of production cost, the economic benefit of the company is improved. Through multiple experiments, the invention discloses a heat treatment process for replacing a 100CrMnSi6-4 material with a 100CrM7o-3 material, and the specific heat treatment process is as follows:
the heat treatment process of the 100CrMnSi6-4 material is adjusted by considering the difference between the content of molybdenum in the 100CrMnSi6-4 material of the bearing steel and the content of molybdenum in the 100CrM7o-3 bearing steel and the austenitizing temperature:
step one, conveying the cleaned and dried roller into an austenitizing furnace, wherein the austenitizing temperature is 835+/-5 ℃;
the austenitizing furnace uses a protective atmosphere of nitrogen, methanol and propane, and the carbon potential of the austenitizing furnace is precisely controlled through an oxygen probe and a carbon potential controller, so that decarburization of a roller working surface and a non-working surface is avoided;
step three, the austenitized roller enters a nitrate tank at 160-170 ℃ for cooling, and the cooling time of the roller is controlled to be 25 minutes, so that the surface temperature of the roller is ensured to be consistent with the core temperature, and the occurrence of roller temperature return is avoided;
step four, the cooled roller passes through an air cooling table (the air cooling time is 24 minutes) with four stations, and the temperature of the surface of the roller and the temperature of the core part are reduced to 65 ℃ before the roller enters secondary cooling;
fifthly, the air-cooled roller enters secondary cooling, and the secondary cooling temperature is controlled to be 5-10 ℃, so that the purposes of reducing residual austenite and stabilizing the size of the roller are achieved;
step six, cleaning and spraying water after entering the secondarily cooled roller, so as to sufficiently remove residual salt on the surface of the roller and in a big roller top pinhole, and avoid corrosion to heating components of a tempering furnace;
step seven, the roller which is cleaned and sprayed with water enters a tempering furnace;
and step eight, tempering the roller at 230 ℃ for 300 minutes, and then performing air cooling, wherein the tempering of the roller is sufficient, the residual austenite of the roller is controlled below 5%, the roller size is more stable, the surface hardness of the roller reaches HRC59-63, and the core hardness of the 1/10 diameter part is HRC58.5, and is more than or equal to HRC56.5.
A roller with a diameter of more than 50mm and 80mm is produced by adopting a 100CrMnSi6-4 material.
By adopting the process, the roller with the diameter of more than 50mm and 80mm produced by using the 100CrMnSi6-4 material can also meet the quality requirement of the roller produced by using the 100CrM7o-3 bearing steel material, thereby greatly reducing the production cost, meeting the quality requirements of different clients and strongly promoting the benefit of companies.
Claims (2)
1. A roller heat treatment process of a 100CrMnSi6-4 material is characterized in that,
step one, conveying the cleaned and dried roller into an austenitizing furnace, wherein the austenitizing temperature is 835+/-5 ℃;
the austenitizing furnace uses a protective atmosphere of nitrogen, methanol and propane, and the carbon potential of the austenitizing furnace is precisely controlled through an oxygen probe and a carbon potential controller, so that decarburization of a roller working surface and a non-working surface is avoided;
step three, the austenitized roller enters a nitrate tank at 160-170 ℃ for cooling, and the cooling time of the roller is controlled to be 30 minutes, so that the temperature of the surface of the roller is ensured to be consistent with that of the core part, and the surface of the roller is prevented from being warmed;
step four, the cooled roller passes through an air cooling table with four stations, the air cooling time is 24 minutes, and the temperature of the surface of the roller and the temperature of the core part are reduced to 70 ℃ before the roller enters secondary cooling;
fifthly, the air-cooled roller enters secondary cooling, and the secondary cooling temperature is controlled to be 5-10 ℃, so that the purposes of reducing residual austenite and stabilizing the size of the roller are achieved;
step six, cleaning and spraying water after entering the secondarily cooled roller, so as to sufficiently remove residual salt on the surface of the roller and in a big roller top pinhole, and avoid corrosion to heating components of a tempering furnace;
step seven, the roller which is cleaned and sprayed with water enters a tempering furnace;
and step eight, tempering the roller at 230 ℃ for 300 minutes, and then performing air cooling, wherein the tempering of the roller is sufficient, the residual austenite of the roller is controlled below 5%, the roller size is more stable, the surface hardness of the roller reaches HRC59-63, and the core hardness of the 1/10 diameter part is HRC58.5, and is more than or equal to HRC56.5.
2. A roller heat treatment process for 100CrMnSi6-4 material according to claim 1, wherein the roller with a diameter of 50mm or more and 80mm is produced by using 100CrMnSi6-4 material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311359544.2A CN117385160A (en) | 2023-10-20 | 2023-10-20 | Roller heat treatment process of 100CrMnSi6-4 material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311359544.2A CN117385160A (en) | 2023-10-20 | 2023-10-20 | Roller heat treatment process of 100CrMnSi6-4 material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117385160A true CN117385160A (en) | 2024-01-12 |
Family
ID=89469712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311359544.2A Pending CN117385160A (en) | 2023-10-20 | 2023-10-20 | Roller heat treatment process of 100CrMnSi6-4 material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117385160A (en) |
-
2023
- 2023-10-20 CN CN202311359544.2A patent/CN117385160A/en active Pending
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