CN112877529A - Aluminum material heat treatment process with gas protection - Google Patents
Aluminum material heat treatment process with gas protection Download PDFInfo
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- CN112877529A CN112877529A CN202110158271.XA CN202110158271A CN112877529A CN 112877529 A CN112877529 A CN 112877529A CN 202110158271 A CN202110158271 A CN 202110158271A CN 112877529 A CN112877529 A CN 112877529A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 100
- 239000000463 material Substances 0.000 title claims abstract description 73
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 52
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000010791 quenching Methods 0.000 claims abstract description 45
- 230000000171 quenching effect Effects 0.000 claims abstract description 44
- 230000001681 protective effect Effects 0.000 claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 239000007921 spray Substances 0.000 claims abstract description 13
- 238000010926 purge Methods 0.000 claims abstract description 7
- 238000000889 atomisation Methods 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 94
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
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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
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- 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 Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention discloses an aluminum material heat treatment process with gas protection, which is realized on the basis of a heat treatment device formed by sequentially connecting a front roller material rack, a front gas exchange chamber, a furnace body, a rear gas exchange chamber and a rear roller material rack, wherein the furnace body is sequentially provided with a heating area and a quenching area along the traveling direction of an aluminum material; the heat treatment device is controlled by a PLC controller to automatically operate, and the heat treatment process comprises the following steps: A. purging, namely introducing protective gas into the front gas exchange chamber and the rear gas exchange chamber; B. heating, namely opening a heating source of a heating area and a first fan; driving a front roller material rack to convey the aluminum material to be subjected to heat treatment to a heating area for heating; C. quenching, namely conveying the aluminum material heated in the heating area to a quenching area for spray cooling or atomization cooling; D. and (5) cooling, driving the rear roller material rack to convey the quenched aluminum material out of the quenching area, and cooling the quenched aluminum material. The invention not only can realize all-weather production, but also is suitable for products with particularly high requirements on surfaces, and the product performance consistency is good.
Description
Technical Field
The invention relates to the technical field of heat treatment processes, in particular to an aluminum material heat treatment process with gas protection.
Background
In order to make metal workpieces have required mechanical properties, physical properties and chemical properties, heat treatment processes are often indispensable except for reasonable selection of materials and various forming processes. The heat treatment is a metal hot processing technology for changing the chemical components and structures on the surface or in the material to obtain the required performance by heating, heat preservation and cooling the metal material in a solid state.
Steel is the most widely used material in the mechanical industry, and the steel microstructure is complex and can be controlled by heat treatment, so the heat treatment of steel is the main content of metal heat treatment. In addition, aluminum, copper, magnesium, titanium and the like and alloys thereof can also be subjected to heat treatment to change the mechanical, physical and chemical properties of the aluminum, copper, magnesium, titanium and the like so as to obtain different service properties.
However, in the actual heat treatment production process of the metal aluminum product, the well furnace and the trolley furnace which are used conventionally have the problem that the production of the heat treatment product is discontinuous, so that the problems of one-time charging, discontinuous production and low production efficiency exist, the conventional aluminum heat treatment product is usually heated directly in an air medium, the heat-treated aluminum loses the bright luster of metal due to oxidation reaction with oxygen in the air, and the surface is oxidized dark gray; in addition, the aluminum material is heated in the traditional annealing square-table furnace, and the problems of unstable product performance and large product deformation caused by uneven cooling exist, so that the finished product rate is low and the like. Therefore, the technical personnel need to solve the problems in the prior art because the high production efficiency, the good surface effect and the high yield of the aluminum product heat treatment product can be ensured.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an aluminum material heat treatment process with gas protection, which can ensure high production efficiency of aluminum material heat treatment products, and the aluminum material products after heat treatment have good surface effect and high yield.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
A heat treatment process of an aluminum material with gas protection is realized based on a heat treatment device which is formed by sequentially connecting a front roller material rack, a front gas exchange chamber, a furnace body, a rear gas exchange chamber and a rear roller material rack, wherein the furnace body is sequentially provided with a heating area and a quenching area according to the traveling direction of the aluminum material; the heat treatment device is controlled by a PLC (programmable logic controller) to automatically operate, and the heat treatment process comprises the following steps:
A. purging, namely opening a protective gas switch, introducing protective gas into the front gas exchange chamber and the rear gas exchange chamber, and performing high-strength purging operation to form positive pressure in the furnace body, extruding air in the furnace body and preventing air outside the furnace body from entering;
B. heating, namely opening a heating source and a first fan of a heating area, heating the heating area and disturbing gas, and keeping the uniformity of the air temperature of the heating area; driving a front roller material rack to convey the aluminum material to be heat-treated to a heating area through a front gas exchange chamber for heating;
C. quenching, namely conveying the aluminum material heated in the heating area to a quenching area through a transmission mechanism in the furnace body for spray cooling or atomized cooling;
D. and (5) cooling, driving the rear roller material frame to convey the quenched aluminum material out of the quenching area through the rear gas exchange chamber, and opening a second fan arranged at the bottom of the rear roller material frame to cool the quenched aluminum material.
Preferably, the protective gas is nitrogen with the purity of 99.999%; the protective gas is a mixed gas of nitrogen and hydrogen, and the volume ratio content of the hydrogen is not more than 10%.
Preferably, different protective gas channels and a gas detection device for detecting the concentration of the protective gas in the furnace body in real time are arranged in the front gas exchange chamber and the rear gas exchange chamber, and the output end of the gas detection device is connected with the input end of the PLC; the inlets of the protective gas channels are communicated with different protective gases, protective gas switches used for introducing the protective gases are arranged at the inlets of the protective gas channels, the controlled ends of the protective gas switches are connected with the output end of the PLC, and the opening degrees of the protective gas switches are interlocked with the gas detection device.
Preferably, the front roller material frame and the rear roller material frame are respectively of chain transmission structures driven by a first motor and a second motor, and controlled ends of the first motor and the second motor are connected with the output end of the PLC.
Preferably, the heating source is electric radiant tubes which are symmetrically arranged at two sides of the heating area from top to bottom, and the controlled ends of the electric radiant tubes are connected with the output end of the PLC controller; the first fan is an axial flow fan arranged above the heating area, and the controlled end of the axial flow fan is connected with the output end of the PLC; the interior of the heating zone is provided with a plurality of layers of high-temperature heat insulation curtains for blocking heat exchange between the inside and the outside of the furnace and a plurality of temperature control detection thermocouples for detecting the temperature in the furnace, the output ends of the temperature control detection thermocouples are connected with the input end of a PLC controller, and the temperature control detection thermocouples are linked with electric radiation tubes.
Preferably, the transmission mechanism in the furnace body is a chain transmission structure of a third motor and a worm gear reducer, and the controlled end of the third motor is connected with the output end of the PLC.
Preferably, a cooling and quenching water interface is arranged on the furnace wall of the quenching area, the cooling and quenching water interface is connected with a rotary spray head which is adjustable in height and is vertically and symmetrically arranged inside the quenching area through a cooling water pipeline and a stainless steel frame which are arranged inside the quenching area, a water pressure regulating valve for regulating water pressure is arranged on the cooling water pipeline, and the controlled end of the water pressure regulating valve is connected with the output end of the PLC.
Preferably, the controlled end of the second fan is connected with the output end of the PLC controller.
Due to the adoption of the technical scheme, the technical progress of the invention is as follows.
The invention can realize all-weather production by adopting walking assembly line type operation; the method is suitable for quenching heat treatment processing of various series of aluminum products, particularly for products with high surface requirements by quickly selecting and switching the inert protective gas; by adopting excellent heating sources, structural arrangement and a multi-layer heat preservation device, the product heating area is stable, and the product performance consistency is good; through the rotary type spray head with adjustable height, the rotary type spray head is not only suitable for products with different heights, but also can be used for users to select different cooling rates.
Drawings
FIG. 1 is a block diagram of a process flow of the present invention;
FIG. 2 is a schematic view of the layout of an inert gas shielded walking quenching furnace according to the present invention;
FIG. 3 is a schematic illustration of a quench zone of the present invention;
FIG. 4 is a graph of quenching data for round bars according to the present invention.
Wherein: 1. the device comprises a front roller material rack, 2 parts of a front gas exchange chamber, 3 parts of a heating zone, 4 parts of a quenching zone, 5 parts of a rear gas exchange chamber, 6 parts of a rear roller material rack, 7 parts of a cooling and quenching water interface, 8 parts of a cooling water pipeline, 9 parts of a water pressure regulating valve, 10 parts of a rotary spray head and 11 parts of a stainless steel frame.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
An aluminum material heat treatment process with gas protection is disclosed, which is shown by combining a figure 1 and a figure 2, and is based on a device and a PLC controller, wherein the device is formed by sequentially connecting a front roller material rack 1, a front gas exchange chamber 2, a heating area 3, a quenching area 4, a rear gas exchange chamber 5 and a rear roller material rack 6, and comprises the following steps:
A. and hoisting the aluminum material to be subjected to heat treatment to a front roller rack 1.
B. And (4) purging, namely opening a protective gas switch, introducing protective gas into the front gas exchange chamber 2 and the rear gas exchange chamber 5, and performing high-strength purging operation to form positive pressure in the furnace body, extruding air in the furnace body and preventing air outside the furnace body from entering.
C. Heating, namely opening a heating source and a first fan of the heating area 3, heating the heating area 3 and disturbing gas, and keeping the uniformity of the air temperature of the heating area; the front roller material rack 1 is driven to convey the aluminum material to be heat treated to the heating area 3 through the front gas exchange chamber 2 for heating.
D. Quenching, namely conveying the aluminum material heated in the heating area 3 to a quenching area 4 through a transmission mechanism in the furnace body for spray cooling or atomization cooling.
E. And (3) cooling, namely driving the rear roller material frame 6 to convey the quenched aluminum material out of the quenching area 4 through the rear gas exchange chamber 5, and opening a second fan arranged at the bottom of the rear roller material frame 6 to cool the quenched aluminum material.
The front roller material rack 1 in the step 1) is of a chain transmission structure driven by a first motor, and the controlled end of the first motor is connected with the output end of a PLC (programmable logic controller).
In the step 2), different protective gas channels and gas detection devices for detecting the concentration of the protective gas in the furnace body in real time are arranged in the front gas exchange chamber 2 and the rear gas exchange chamber 5, and the output ends of the gas detection devices are connected with the input end of the PLC; the inlets of the protective gas channels are communicated with different protective gases, protective gas switches used for introducing the protective gases are arranged at the inlets of the protective gas channels, the controlled ends of the protective gas switches are connected with the output end of the PLC, and the opening degrees of the protective gas switches are interlocked with the gas detection device. The protective gas is nitrogen with the purity of 99.999 percent or the mixed gas of nitrogen and hydrogen (the volume ratio content of hydrogen is not more than 10 percent) can be introduced according to the product selection process.
In the step 3), the heating source is electric radiant tubes which are symmetrically arranged at two sides of the heating area 3 from top to bottom, and the controlled ends of the electric radiant tubes are connected with the output end of the PLC; the first fan is an axial flow fan arranged above the heating area 3, and the controlled end of the axial flow fan is connected with the output end of the PLC; the heating zone 3 is internally provided with a plurality of layers of high-temperature heat insulation curtains for blocking heat exchange between the inside and the outside of the furnace and a plurality of temperature control detection thermocouples for detecting the temperature in the furnace, the output ends of the temperature control detection thermocouples are connected with the input end of a PLC controller, and the temperature control detection thermocouples are linked with electric radiation tubes.
And 4) in the step 4), the transmission mechanism in the furnace body is of a chain transmission structure of a third motor and a worm gear and worm reducer, a controlled end of the third motor is connected with an output end of a PLC (programmable logic controller), and the stay time of the aluminum material in the heating area 3 and the stay time of the aluminum material in the quenching area 4 are ensured by adjusting the rotating speed of the third motor, so that the complete and continuous spraying or atomizing time of the aluminum material heat treatment is ensured. Setting the frequency of a third motor to be 35HZ, continuously spraying the product at the temperature of more than 500 ℃ within 10 seconds, namely, cooling the product to about 40 ℃, and compared with the traditional vertical quenching, the quenching process can obtain higher supercooling degree and simultaneously realize the minimum deformation of the product, for example: the 2A12 φ 20 round bar quenching data plot is shown in FIG. 3.
As shown in fig. 2, a cooling and quenching water port 7 is provided on the furnace wall of the quenching area 4, the cooling and quenching water port 7 is connected with a rotary spray head 10 which is adjustable in height and is arranged inside the quenching area 4 in an up-down symmetrical manner through a cooling water pipeline 8 and a stainless steel frame 11 which are provided inside the quenching area 4, a water pressure regulating valve for regulating water pressure is provided on the cooling water pipeline 8, and the controlled end of the water pressure regulating valve is connected with the output end of the PLC controller. The product is subjected to quenching heat treatment by adopting a spraying or atomizing cooling mode according to the performance requirements of the aluminum product, and the rotary spray head 10 with the adjustable height is suitable for aluminum product products with different heights and can be used for users to select different cooling rates. The quenching area 4 is also provided with a flow guide cover and a water collecting tank, so that water for cooling and quenching can be fully recovered, and water resources are saved.
And 5) the rear roller material frame 6 is of a chain transmission structure driven by a second motor, and the controlled end of the second motor is connected with the output end of the PLC. The second fan is arranged at the bottom of the rear roller material rack 6, the second fan further cools the quenched aluminum material, the subsequent packaging operation is facilitated, and the controlled end of the second fan is connected with the output end of the PLC.
The invention can realize all-weather production by adopting walking assembly line type operation; inert protective gas can be rapidly selected and switched according to different products, and the method is suitable for quenching heat treatment processing of various series of aluminum products, and is particularly suitable for products with particularly high surface requirements; by adopting excellent heating sources, structural arrangement and a multi-layer heat preservation device, the product heating area is stable, and the product performance consistency is good; through the rotary type spray head with adjustable height, the rotary type spray head is not only suitable for products with different heights, but also can be used for users to select different cooling rates.
Claims (8)
1. The heat treatment process of the aluminum material with the gas protection function is characterized by comprising the following steps of: the process is realized on the basis of a heat treatment device which is formed by sequentially connecting a front roller material rack (1), a front gas exchange chamber (2), a furnace body, a rear gas exchange chamber (5) and a rear roller material rack (6), wherein the heating area (3) and the quenching area (4) are sequentially arranged in the furnace body in a manner of following the traveling direction of aluminum materials; the heat treatment device is controlled by a PLC (programmable logic controller) to automatically operate, and the heat treatment process comprises the following steps:
A. purging, namely opening a protective gas switch, introducing protective gas into the front gas exchange chamber (2) and the rear gas exchange chamber (5), and performing high-strength purging operation to form positive pressure in the furnace body, extrude air in the furnace body and prevent air outside the furnace body from entering;
B. heating, namely opening a heating source and a first fan of the heating area (3), heating the heating area (3) and disturbing gas, and keeping the uniformity of the air temperature of the heating area; the front roller material rack (1) is driven to convey the aluminum material to be subjected to heat treatment to the heating area (3) through the front gas exchange chamber (2) for heating;
C. quenching, namely conveying the aluminum material heated in the heating area (3) to a quenching area (4) through a transmission mechanism in the furnace body for spray cooling or atomization cooling;
D. and (3) cooling, driving the rear roller material rack (6) to convey the quenched aluminum material out of the quenching area (4) through the rear gas exchange chamber (5), and starting a second fan arranged at the bottom of the rear roller material rack (6) to cool the quenched aluminum material.
2. The aluminum material heat treatment process with gas protection as claimed in claim 1, wherein: the protective gas is nitrogen with the purity of 99.999 percent; the protective gas is a mixed gas of nitrogen and hydrogen, and the volume ratio content of the hydrogen is not more than 10%.
3. The aluminum material heat treatment process with gas protection as claimed in claim 1, wherein: different protective gas channels and gas detection devices for detecting the concentration of the protective gas in the furnace body in real time are arranged in the front gas exchange chamber (2) and the rear gas exchange chamber (5), and the output ends of the gas detection devices are connected with the input end of the PLC; the inlets of the protective gas channels are communicated with different protective gases, protective gas switches used for introducing the protective gases are arranged at the inlets of the protective gas channels, the controlled ends of the protective gas switches are connected with the output end of the PLC, and the opening degrees of the protective gas switches are interlocked with the gas detection device.
4. The aluminum material heat treatment process with gas protection as claimed in claim 1, wherein: the front roller material rack (1) and the rear roller material rack (6) are respectively of chain transmission structures driven by a first motor and a second motor, and controlled ends of the first motor and the second motor are connected with the output end of the PLC.
5. The aluminum material heat treatment process with gas protection as claimed in claim 1, wherein: the heating source is electric radiant tubes which are symmetrically arranged at two sides of the heating area (3) from top to bottom, and the controlled ends of the electric radiant tubes are connected with the output end of the PLC controller; the first fan is an axial flow fan arranged above the heating area (3), and the controlled end of the axial flow fan is connected with the output end of the PLC; the heating zone (3) is internally provided with a plurality of layers of high-temperature heat insulation curtains for blocking heat exchange between the inside and the outside of the furnace and a plurality of temperature control detection thermocouples for detecting the temperature in the furnace, the output ends of the temperature control detection thermocouples are connected with the input end of the PLC, and the temperature control detection thermocouples are linked with the electric radiation tubes.
6. The aluminum material heat treatment process with gas protection as claimed in claim 1, wherein: the transmission mechanism in the furnace body is a chain transmission structure of a third motor and a worm gear reducer, and the controlled end of the third motor is connected with the output end of the PLC.
7. The aluminum material heat treatment process with gas protection as claimed in claim 1, wherein: the furnace wall of the quenching area (4) is provided with a cooling and quenching water connector (7), the cooling and quenching water connector (7) is connected with a rotary spray head (10) which is adjustable in height and is arranged inside the quenching area (4) in an up-and-down symmetrical mode through a cooling water pipeline (8) and a stainless steel frame (11) which are arranged inside the quenching area (4), a water pressure regulating valve used for regulating water pressure is arranged on the cooling water pipeline (8), and the controlled end of the water pressure regulating valve is connected with the output end of a PLC (programmable logic controller).
8. The aluminum material heat treatment process with gas protection as claimed in claim 1, wherein: and the controlled end of the second fan is connected with the output end of the PLC.
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| CN202110158271.XA CN112877529A (en) | 2021-02-05 | 2021-02-05 | Aluminum material heat treatment process with gas protection |
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| CN210134149U (en) * | 2019-07-08 | 2020-03-10 | 兰溪轮峰车料有限公司 | High-performance aluminum alloy forging heat treatment equipment |
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| CN205676510U (en) * | 2016-06-03 | 2016-11-09 | 焦作协力铝业发展有限公司 | A kind of annealing device of aluminium alloy |
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