CN117344103A - Steel plate heat treatment tempering system - Google Patents
Steel plate heat treatment tempering system Download PDFInfo
- Publication number
- CN117344103A CN117344103A CN202210749477.4A CN202210749477A CN117344103A CN 117344103 A CN117344103 A CN 117344103A CN 202210749477 A CN202210749477 A CN 202210749477A CN 117344103 A CN117344103 A CN 117344103A
- Authority
- CN
- China
- Prior art keywords
- section
- heat treatment
- heating
- steel plate
- tempering system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 93
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 59
- 239000010959 steel Substances 0.000 title claims abstract description 59
- 238000005496 tempering Methods 0.000 title claims abstract description 37
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 238000002791 soaking Methods 0.000 claims abstract description 23
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 15
- 239000000443 aerosol Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000004904 shortening Methods 0.000 abstract 1
- 230000006698 induction Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010301 surface-oxidation reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
-
- 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
- C21D1/34—Methods of heating
-
- 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
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention discloses a steel plate heat treatment tempering system, which comprises a tempering section and a cooling device, wherein the tempering section and the cooling device are arranged between an inlet roller way and an outlet roller way and are sequentially arranged along the running direction of a steel plate; the tempering section comprises a heating section and a soaking section which are sequentially arranged along the running direction of the steel plate. The invention adopts a combination mode of electromagnetic induction heating and gas heating, thereby rapidly improving the temperature of the steel plate and shortening the heating time.
Description
Technical Field
The invention relates to a steel plate heat treatment technology, in particular to a steel plate heat treatment tempering system.
Background
Under the guidance of low carbon emission reduction and green environmental protection, the steel for engineering machinery, automobiles and other industries has remarkable trend of enhancing weight reduction and light weight, and promotes the rapid development and application of high-strength steel products.
The heat treatment process is an important way for producing hot-rolled high-strength and ultrahigh-strength wear-resistant steel and automobile structural steel products. Tempering is an important process in heat treatment production, and is a heat treatment process of reheating a quenched steel plate to a proper temperature lower than a critical temperature, and cooling the steel plate in a certain way after heat preservation for a period of time, so as to stabilize a structure, improve the toughness of the material, eliminate internal stress generated during quenching and hot rolling, and obtain good user processing usability.
As shown in fig. 1, the existing annealing line mainly comprises an annealing furnace 10 arranged between an inlet roller way 1 and an outlet roller way 2, and a conventional tempering furnace 10 for producing hot-rolled high-strength steel is a gas heating furnace, which mainly bears the heating and soaking processes of strip steel 3. The temperature distribution of the steel plate is uneven in the heating process, the surface reaches the temperature first, and the core reaches the temperature later. The thicker the steel sheet is, the slower it is, for example, the thicker the 8mm steel sheet is, the heating core is usually about 20 minutes, and the tempering furnace is usually 100-200 m long in order to ensure heating and heat preservation time. Even so, annual capacity is substantially within 10 ten thousand tons for tempering furnaces that are mainly producing thin gauge (2-14 mm) products. To increase the capacity, the furnace length must be further increased, which is not desirable in terms of both technology and economy. The induction heating has the advantages of high heating efficiency, less surface oxidation, flexible control, environmental protection and the like, and is increasingly widely applied in the field of metal heating, especially heat treatment in recent years.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a steel plate heat treatment tempering system which adopts a combination mode of electromagnetic induction heating and gas heating to quickly improve the temperature of the steel plate and shorten the heating time.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a steel plate heat treatment tempering system comprises a tempering section and a cooling device, wherein the tempering section and the cooling device are arranged between an inlet roller way and an outlet roller way and are sequentially arranged along the running direction of a steel plate;
the tempering section comprises a heating section and a soaking section which are sequentially arranged along the running direction of the steel plate.
Preferably, the heating section is an electromagnetic induction heating furnace, and adopts a longitudinal magnetic heating coil heating mode or a transverse magnetic heating coil heating mode;
and a muffle cover is further arranged on the outer side of the electromagnetic induction heating furnace.
Preferably, the heating temperature of the electromagnetic induction heating furnace is 150-700 ℃.
Preferably, the soaking section is a gas heating furnace.
Preferably, the soaking temperature of the gas heating furnace is 150-700 ℃ and the soaking time is 2-40 min.
Preferably, the cooling device adopts one or two of air cooling, gas injection cooling and aerosol cooling.
Preferably, the cooling speed of the cooling device is more than or equal to 20 ℃/s.
Preferably, the outlet position of the heating section is provided with a first thermometer, and the outlet position of the soaking section is provided with a second thermometer.
According to the steel plate heat treatment tempering system provided by the invention, an electromagnetic induction heating and gas heating combined mode is adopted, the electromagnetic induction heating is not in direct contact with the strip steel, the heated heat is generated inside the strip steel, the induction heating is uniform, the temperature control is accurate, the temperature of the steel plate can be quickly increased, the heating time is shortened, the production efficiency is improved, and meanwhile, the carbon emission and the environmental pollution are reduced, so that the steel plate heat treatment tempering system is more environment-friendly.
Drawings
FIG. 1 is a schematic view of a conventional annealing line;
fig. 2 is a schematic structural view of a heat treatment tempering system for steel sheet according to the present invention.
Detailed Description
In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Referring to fig. 2, the tempering system for heat treatment of steel plate provided by the invention comprises a tempering section and a cooling device 6, wherein the tempering section and the cooling device are arranged between an inlet roller way 1 and an outlet roller way 2 and are sequentially arranged along the running direction of the steel plate 3.
The tempering section comprises a heating section 4 and a soaking section 5 which are sequentially arranged along the running direction of the steel plate 3.
The heating section 4 is an electromagnetic induction heating furnace, and adopts a longitudinal magnetic heating coil heating mode or a transverse magnetic heating coil heating mode to heat the steel plate 3 at 150-700 ℃.
The outer side of the electromagnetic induction heating furnace is also provided with a muffle cover 7.
The soaking section 5 is a gas heating furnace, the soaking temperature of the steel plate 3 is 150-700 ℃, and the soaking time is 2-40 min.
The cooling device 6 adopts one or two of air cooling, gas injection cooling and aerosol cooling.
The cooling speed of the cooling device 6 to the steel plate 3 is more than or equal to 20 ℃/s.
The outlet position of the heating section 4 is provided with a first thermometer 8, and the outlet position of the soaking section 5 is provided with a second thermometer 9.
The thickness of the steel plate 3 is 2-14mm, and the width is 600-2100 mm.
Examples
Referring back to fig. 2, the embodiment provides a steel plate heat treatment tempering system, which comprises a tempering section and a cooling device 6, wherein the tempering section and the cooling device are arranged between an inlet roller way 1 and an outlet roller way 2 and are sequentially arranged along the running direction of a steel plate 3.
The tempering section comprises a heating section 4 and a soaking section 5 which are sequentially arranged along the running direction of the steel plate 3.
The thickness of the steel plate 3 is 2-14mm, the width is 600-2100 mm, the steel plate enters the heating section 4 (electromagnetic induction heating furnace) through the inlet roller way 1, and the induction heating has the advantages of high heating efficiency, less surface oxidation, flexible control, environmental protection and the like. The steel sheet 3 is heated from room temperature to a desired target temperature by utilizing the characteristic of rapid heating rate of induction heating. The target heating temperature of the steel plate 3 is set according to different product requirements, for example, the wear-resistant steel is usually 150-250 ℃, and the engineering machinery structural steel is usually 450-650 ℃. In order to reduce steel plate oxidation in the heating process, the outside of electromagnetic induction heating furnace is provided with the muffle 7, is filled with N2 protection in the muffle 7.
The steel plate 3 after electromagnetic induction heating enters a soaking section 5 (a gas heating furnace) for soaking and heat preservation so as to obtain uniform material structure and lower residual stress level. The soaking time is also determined according to the requirements of different products, and is usually 2-40 min.
The outlet position of the heating section 4 is provided with a first thermometer 8, the outlet position of the soaking section 5 is provided with a second thermometer 9, and the temperature of the strip steel 3 is detected to ensure that the target temperature is reached.
After the steel plate 3 is out of the soaking section 5, an air cooling mode can be adopted. In order to shorten the cooling time, a cooling device 6 is arranged behind the soaking section 5, and the cooling mode is one or a combination of gas injection cooling or aerosol cooling, but the cooling speed is less than or equal to 8 ℃/s in order not to affect the strip steel material performance and the plate-shaped quality.
It will be appreciated by persons skilled in the art that the above embodiments are provided for illustration only and not for limitation of the invention, and that variations and modifications of the above described embodiments are intended to fall within the scope of the claims of the invention as long as they fall within the true spirit of the invention.
Claims (8)
1. A steel plate heat treatment tempering system is characterized in that: the device comprises a tempering section and a cooling device which are arranged between an inlet roller way and an outlet roller way and are sequentially arranged along the running direction of the steel plate;
the tempering section comprises a heating section and a soaking section which are sequentially arranged along the running direction of the steel plate.
2. The steel sheet heat treatment tempering system according to claim 1, wherein: the heating section is an electromagnetic induction heating furnace and adopts a longitudinal magnetic heating coil heating mode or a transverse magnetic heating coil heating mode;
and a muffle cover is further arranged on the outer side of the electromagnetic induction heating furnace.
3. The steel sheet heat treatment tempering system according to claim 2, wherein: the heating temperature of the electromagnetic induction heating furnace is 150-700 ℃.
4. The steel sheet heat treatment tempering system according to claim 1, wherein: the heat equalizing section is a gas heating furnace.
5. The steel sheet heat treatment tempering system according to claim 4, wherein: the soaking temperature of the gas heating furnace is 150-700 ℃ and the soaking time is 2-40 min.
6. The steel sheet heat treatment tempering system according to claim 1, wherein: the cooling device adopts one or two of air cooling, gas injection cooling and aerosol cooling.
7. The steel sheet heat treatment tempering system according to claim 6, wherein: the cooling speed of the cooling device is more than or equal to 20 ℃/s.
8. The steel sheet heat treatment tempering system according to claim 1, wherein: the outlet position of the heating section is provided with a first thermometer, and the outlet position of the soaking section is provided with a second thermometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210749477.4A CN117344103A (en) | 2022-06-28 | 2022-06-28 | Steel plate heat treatment tempering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210749477.4A CN117344103A (en) | 2022-06-28 | 2022-06-28 | Steel plate heat treatment tempering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117344103A true CN117344103A (en) | 2024-01-05 |
Family
ID=89369816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210749477.4A Pending CN117344103A (en) | 2022-06-28 | 2022-06-28 | Steel plate heat treatment tempering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117344103A (en) |
-
2022
- 2022-06-28 CN CN202210749477.4A patent/CN117344103A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104141039B (en) | A kind of rolling mill practice controlling 42CrMo steel bloom gren rod decarburization | |
| CN103849746B (en) | The 40CrNiMoA plug that a kind of thermal treatment process of 40CrNiMoA plug and process thereof obtain | |
| CN105441786B (en) | Tensile strength 1500MPa grades of hot press-formed use sheet metal and its CSP production methods | |
| CN109161805B (en) | 590 MPa-grade automobile lightweight cold-rolled dual-phase steel and production method thereof | |
| CN107520308A (en) | A kind of high-strength steel servo medium temperature Sheet Metal Forming Technology | |
| CN102140569B (en) | Quick normalizing heat treatment method for Q345R steel | |
| JP2013081990A (en) | Hot-rolled coil cooling method, manufacturing method, and cooling apparatus | |
| CN113249651A (en) | Gear steel bar material with controlled rolling and high-temperature tempering | |
| CN101818236B (en) | Method for manufacturing high carbon steel wheel | |
| CN101538643A (en) | Process for quenching H13 steel by high-pressure gas stepped quick cooling | |
| CN105369114A (en) | Production method for thin pickling and annealing tool steel | |
| CN113174470B (en) | F45MnVS steel continuous normalizing heat treatment method | |
| CN118166191B (en) | Manufacturing method of 9.8-grade non-cold-heading steel high-strength hot-rolled wire rod | |
| CN106513439B (en) | A kind of hot rolling high carbon steel sheet band manufacture method of one side decarburization stratum proportion less than 0.7% | |
| CN117344103A (en) | Steel plate heat treatment tempering system | |
| CN105385828A (en) | Quenching-tempering heat treatment method for seamless steel tubes | |
| CN102115812B (en) | Prompt tempering heat treatment method for Q690D steel | |
| CN105543455B (en) | A kind of sensing heating heat-treatment technology method of clad steel plate | |
| CN109943774A (en) | A kind of Low Alloy Steel for Automobile and its heating Decarburization Control technique | |
| CN113210421B (en) | Production method for controlling transverse plate shape of high-quality carbon structural steel plate | |
| CN102886651B (en) | Manufacturing process of round pipe steel of chain | |
| CN106868279A (en) | A kind of elimination 20CrMnTiH residual forging heats isothermal normalizing produces the Technology for Heating Processing of acicular ferrite | |
| CN117344123A (en) | Steel plate heat treatment quenching system | |
| CN102676939B (en) | Thermal treatment process for 18Cr17Ni2 modified stainless steel material | |
| CN115584378B (en) | Low-carbon steel residual stress regulation and control method for enhancing Mn distribution plasticity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |