A heat treatment equipment for collaborative regulation of formability and properties of large thin-walled head aluminum components

Abstract

The present invention relates to a heat treatment equipment for collaborative regulation of shape and property of large thin-walled head aluminum components. In view of the co-line production requirements of ultra-large aluminum alloy cap-shaped workpieces, frame ring workpieces and large-width plate-shaped workpieces, on the basis of increasing the effective working area size of integral solution heat treatment of aluminum alloy parts of ultra-large diameter rockets, an automatic detection function for the ultimate size of products is added; in addition, on the basis of increasing the effective working area size of the integral solution heat treatment furnace for aluminum alloy parts of ultra-large diameter rockets, a function of balancing and matching the upper and lower heating high-temperature airflows of frame ring workpieces and large-width plate-shaped workpieces is added, which can balance and match the upper heating high-temperature airflows at the center top, waist and lower outer surfaces of ultra-large aluminum alloy cap-shaped workpieces, and can adjust the effective working area to adapt to the workpiece specifications during production.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum alloy heat treatment equipment, and specifically relates to a heat treatment equipment for coordinated control of shape and property of large thin-walled head aluminum components. Background Art

[0002] With the continuous increase in the diameter of the rocket body, the performance requirements for aluminum alloy parts of the fuel tank are becoming increasingly strict. The original split welding method not only increases the cost, but also increases the defect rate, unable to meet the product requirements. In order to meet the process performance requirements of rocket launch, the aluminum alloy parts of large-diameter rockets are integrally formed by pressure processing, replacing the combined structural parts welded by multiple aluminum alloy pieces. This not only reduces the weight of the super-large aluminum alloy structure and improves the reliability during service, but also reduces the assembly process and effectively controls the manufacturing cost. Large thin-walled head aluminum components must undergo integral solution heat treatment to improve material properties, and at the same time have excellent matching of strength, plasticity, fracture toughness, fatigue resistance, stress corrosion resistance and exfoliation corrosion resistance. The compatibility of the effective zone height direction of the existing roller hearth electric heating furnace and quenching machine tool in the aluminum component heat treatment production line is low, and the width is relatively narrow. They are mainly used for heat treatment of plate parts and ring parts, and cannot simultaneously meet the automated co-line production of super-large aluminum alloy hat-shaped workpieces, frame ring parts and large-width plate-shaped workpieces.

[0003] Chinese invention patent with the application number 201911115502.8 discloses a precision heat treatment production line for thin-walled special-shaped aluminum components. Among them, the effective working areas of the roller hearth electric heating furnace and the quenching machine tool are both for specific types of products, and the product specifications are restricted by the effective working areas. During centralized co-line production, the original production line's effective working area can only produce product models with limit sizes close to each other. With the continuous increase in the designed diameter of the rocket, the sizes of aluminum alloy parts of super-large-diameter rockets increase accordingly, and the limit size gaps of hat-shaped workpieces, frame ring parts and large-width plate-shaped workpieces become larger. By only increasing the sizes of the effective working areas of the furnace chamber and the spray quenching area, it is impossible to take into account the hat parts and plate parts with too large height differences. For example, after the plate parts enter the effective working area, the hot air field and the spray quenching flow field are disturbed and change, and the effective working area cannot be effectively concentrated downward to better adapt to the solution production requirements of the plate parts. Summary of the Invention

[0004] Aiming at the defects existing in the prior art, the purpose of the present invention is to provide a heat treatment device for collaborative regulation of shape and property of large thin-walled head aluminum components. In view of the co-line production requirements of ultra-large aluminum alloy hat-shaped workpieces, frame ring workpieces and large-width plate-shaped workpieces, on the basis of increasing the effective working area size of the integral solution heat treatment of aluminum alloy parts of ultra-large diameter rockets, the function of automatically detecting the limit size of products is added; in addition, on the basis of increasing the effective working area size of the integral solution heat treatment furnace of aluminum alloy parts of ultra-large diameter rockets, the function of evenly matching the upper and lower heating high-temperature airflows of frame ring workpieces and large-width plate-shaped workpieces is added, which can evenly match the upper heating high-temperature airflows at the center top, waist and lower outer surfaces of ultra-large aluminum alloy hat-shaped workpieces, and can adjust the effective working area to adapt to the workpiece specifications during production.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A heat treatment device for collaborative regulation of shape and property of large thin-walled head aluminum components, characterized in that it includes a loading area 3, a heating area 1, a cooling area 2 and a discharging area 4 which are arranged and connected in sequence;

[0007] The loading area 3 includes a roller path fixed steel frame 31, and a plurality of conveying rollers 32 are installed on the roller path fixed steel frame 31 for conveying workpieces into the heating area 1; the loading area transmission drive system is installed below the roller path fixed steel frame 31 for driving the conveying rollers 32;

[0008] The heating area 1 includes a heating furnace body, a heat-resistant conveying system and a heating circulation system are installed inside the heating furnace body, and a furnace door system is installed on the feeding side and the discharging side of the heating furnace body; the heating area 1 heats the workpieces that need to be heat-treated;

[0009] The cooling area 2 includes a stainless steel shell 214, an anti-rust conveying system is installed below the inside of the stainless steel shell 214, an upper spray quenching system is installed above the inside of the stainless steel shell 214, and a lower spray quenching system is installed below the anti-rust conveying system; the quenching circulation system is arranged outside the stainless steel shell to provide quenching cooling water source for the upper spray quenching system and the lower spray quenching system; the cooling area 2 is used to quench and cool the workpieces that have been heat-treated in the heating area 1;

[0010] The discharging area 4 includes a roller path fixed steel frame 41, and a plurality of conveying rollers 42 are installed on the roller path fixed steel frame 41 for conveying workpieces to the next process; the discharging area transmission drive system is installed below the roller path fixed steel frame 41 for driving the conveying rollers 42.

[0011] On the basis of the above solution, the heating circulation system of the heating area 1 includes a high-temperature circulation fan 101, a fan volute 102 is located outside the high-temperature circulation fan 101, the air outlet part of the fan volute 102 is connected to a top air guide cover 103, and a heater is installed inside the top air guide cover 103;

[0012] The air guide hood 103 connected to the blower volute 102 of the high-temperature circulating blower 101 is connected to the first side air injection box 107 and the second side air injection box 110. A plurality of side air injection windows 108 are provided at the lower parts of the first side air injection box 107 and the second side air injection box 110;

[0013] The first side air injection box 107 and the second side air injection box 110 are connected with a joint-shaped upper air guide and injection arm 106 above. A plurality of injection nozzles are provided at the lower part of the joint-shaped upper air guide and injection arm 106. After the high-temperature furnace gas is heated by the heater, it respectively passes through the joint-shaped upper air guide and injection arm 106, the first side air injection box 107 and the second side air injection box 110 and is ejected from the injection nozzles;

[0014] The first side air injection box 107 and the second side air injection box 110 are connected with a roller rod through-hole box 114 below. The roller rod through-hole box 114 is connected to the lower air guide and injection arm 111 located at the bottom of the heating zone 1. A plurality of top injection nozzles are provided at the upper part of the lower air guide and injection arm 111; after the high-temperature furnace gas is heated by the heater, it successively passes through the first side air injection box 107 or the second side air injection box 110, the roller rod through-hole box 114 and the lower air guide and injection arm 111 and is ejected from the side air injection windows 108 and the top nozzles of the lower air guide and injection arm 111;

[0015] The heat-resistant conveying system is composed of heat-resistant conveying rollers, a heating conveying system and a furnace internal monitoring system; the heat-resistant conveying rollers are installed on the bearing seat fixing plates on both sides of the lower part of the heating furnace body; the heating conveying system is installed at the bottom of one side of the heating furnace body; the furnace internal monitoring system is installed at both ends of the inlet and outlet of the heating furnace body. On both sides of the furnace body at each end, a laser pair emission signal module and a receiving module are respectively arranged; the heat-resistant conveying system can realize the continuous reciprocating swing of the workpiece on the roller path within the laser pair emission area at both ends of the inlet and outlet, improving the heating temperature uniformity of the product;

[0016] The furnace door system includes a furnace door. The furnace door is installed on the furnace door column, and the top of the furnace door is connected with a lifting mechanism; the lifting mechanism is installed at the furnace top position above the furnace door and is composed of a lifting motor, a sprocket chain and a lifting limit detection element. The lifting mechanism is used to control the lifting of the furnace door; a sealing mechanism is provided around the furnace door. The sealing mechanism is composed of a pressing cylinder and a pneumatic mechanism element. The sealing mechanism is used to seal the furnace door; the furnace door is only opened when the workpiece enters and exits the heating zone 1, and is in a closed, pressed and sealed state at other times.

[0017] On the basis of the above solution, the joint-shaped upper air guide and injection arm 106 is divided into a front fixed section 1061 and a rear joint-shaped section 1062, and the rear joint-shaped section 1062 can be bent downward to be close to the outer curved surface of the workpiece.

[0018] Based on the above solution, the rust-proof conveying system in the cooling zone 2 includes a conveying roller frame 211, and the workpiece conveying rollers 210 are installed on the conveying roller frame 211; an upper spray quenching system is suspended above the workpiece conveying rollers 210, and a lower spray quenching system is installed below the conveying roller frame 211; the upper spray quenching system can adjust the position of the upper spray nozzles 206 relative to the workpiece according to the shape of the workpiece to be processed.

[0019] The lower spray quenching system includes a lower spray main pipe 213. The lower spray main pipe 213 leads out multiple lower spray branch pipes 212 arranged between the conveying rollers. The lower spray branch pipes 212 are evenly provided with lower spray nozzles 215, and the lower spray nozzles 215 spray upward to cool the workpiece.

[0020] The upper spray quenching system includes an upper spray main pipe 204. The upper spray main pipe 204 leads out multiple upper spray hoses 203. The multiple upper spray hoses 203 are respectively connected to multiple upper spray branch pipes 205. The upper spray branch pipes 205 are evenly provided with multiple upper spray nozzles 206, and the upper spray nozzles 206 spray downward to cool the workpiece; the upper spray quenching system further includes a branch pipe guiding device 201. Each upper spray branch pipe 205 can slide up and down along the branch pipe guiding device 201. The branch pipe guiding device 201 is also provided with multiple branch pipe counterweights 202. The above-mentioned branch pipe counterweights 202 are respectively connected to each upper spray branch pipe 205 through the branch pipe guiding device 201 and move up and down simultaneously as the upper spray branch pipes 205 slide up and down along the branch pipe guiding device 201. Each upper spray branch pipe 205 can adjust its position relative to the workpiece according to the shape of the workpiece to be processed through the branch pipe guiding device 201.

[0021] Based on the above solution, the two ends of the upper spray branch pipe 205 are provided with jointed bendable structures 207. The jointed bendable structures 207 can be driven by the built-in integrated stepper motors of the lifting and rotating wheels 216 to bend downward to fit the outer curved surface of the workpiece.

[0022] Based on the above solution, product detection systems are provided on the columns on both sides of the feed furnace door in the heating zone 1. The product detection systems are composed of a light signal emission end and a light signal reception end. The light signal emitted by the light signal emission end on one side of the door column is blocked by the cross-sectional height of different workpieces and irradiates the light signal reception end on the other side of the door column. After the sampling data of the light signal reception end is input into the automatic control system, it jointly forms the cross-sectional height data of the workpiece with the workpiece position coordinates at the current time point. The automatic control system controls the bending actions of the rear jointed section 1062 of the jointed upper air guide spray arm 106 in the heating zone 1 and the jointed bendable structure 207 in the cooling zone 2 to match the outer curved surface of the workpiece according to the workpiece cross-sectional height data. The beneficial effects of a heat treatment equipment for coordinated regulation of the shape and properties of large thin-walled head aluminum components described in the present invention are as follows:

[0023] (1) In view of the large furnace working condition, the high-temperature airflow ejected from the air outlet of the top spray arm of the air guide part cannot effectively reach the upper surface of the workpiece, resulting in a mismatch between the upper and lower heating high-temperature airflows. The present invention is aimed at the production of frame ring parts and large-width plate-type workpieces. The branch pipe guide device can be used to adjust the equipment to a low-position working state in which the upper spray arm is close to the upper surface of the workpiece (less than 500 mm), effectively balancing the upper and lower heating high-temperature airflows of the frame ring parts and large-width plate-type workpieces, improving the consistency of the comprehensive heat transfer coefficients of various heating areas on the workpiece surface, reducing thermal stress and thermal deformation, and enhancing the dimensional stability of the product.

[0024] (2) In order to solve the problem of mismatch between the high-temperature airflows at the top, waist and lower outer surfaces of the hat-shaped workpiece, the present invention designs the air spray arms on the equipment to be interlaced and arranged in a left-right articulated shape. The rear end of the articulated upper air spray arm on each side can be bent downward under program control to be close to the outer curved surface of the workpiece, forming a through arched channel. When producing ultra-large aluminum alloy hat-shaped workpieces, the arc-shaped cross-section of the workpiece can be within a relatively close range (about 500mm) of the air spray port of the articulated upper air spray arm, achieving a more uniform jet heating state.

[0025] (3) In view of the operational reliability requirements of the upper spray quenching system, the present invention performs programmed recognition on the workpiece information collected by the equipment through the product detection system, and drives the integrated stepper motor in the guide device accordingly. The stepper motor drives the lifting and rotating wheel to rotate and moves the upper spray branch pipe to the required position. The height position of the upper spray branch pipe is transmitted back to the automatic control system by the rotary encoder of the lifting and rotating wheel. When the real-time position of the upper spray branch pipe does not match the instruction given after the master control calculation, an automatic alarm will be triggered and the vibration mode will be started. The integrated stepper motor will repeatedly vibrate in a short period of time in forward and reverse directions to achieve the effect of repeatedly impacting the impurities at the stuck point in the slideway of the extrusion guide device. If the position of the upper spray branch pipe matches the master control instruction after the vibration mode, the alarm will be released and the automatic quenching and cooling process will continue to be executed. Otherwise, the automatic operation will be interrupted and manual intervention will be required. Furthermore, 20 minutes before each quenching process, the upper spray quenching system automatically simulates and runs a waterless quenching action according to the cross-sectional height data of the workpiece in the heating zone as a self-checking preventive measure.

[0026] (4) For the left and right ends of the upper spray branch pipe in the middle position of the super-large aluminum alloy hat-shaped workpiece, the distances from the waist and lower part of the hat-shaped workpiece are too far, resulting in the problem of unmatched quenching water flow on the outer surfaces of the center top, waist, and lower part of the hat-shaped workpiece. In the present invention, both ends of the upper spray branch pipe in the middle position of the equipment are designed as jointed and bendable structures. The rear 2 / 5 section of each side of the jointed upper spray branch pipe can be bent downward under program control to closely adhere to the outer curved surface of the workpiece, achieving the function of evenly matching the quenching water flow on the outer surfaces of the center top, waist, and lower part of the super-large aluminum alloy hat-shaped workpiece in the middle position. Further, the nozzles of the quenching machine tool are all equipped with compressed air supply pipelines, which can switch between water spraying, spraying, and air spraying modes according to process requirements in different thickness areas of different products, obtaining different cooling process curves and realizing the function of customized strength cooling for products in different zones. Description of the Drawings

[0027] The present invention has the following drawings:

[0028] Figure 1 Axonometric view of a heat treatment equipment for collaborative regulation of shape and property of large thin-walled head aluminum components according to the present invention;

[0029] Figure 2 Axonometric view of a heat treatment equipment for collaborative regulation of shape and property of large thin-walled head aluminum components according to the present invention;

[0030] Figure 3 Top view of a heat treatment equipment for collaborative regulation of shape and property of large thin-walled head aluminum components according to the present invention;

[0031] Figure 4 A - A sectional view of a heat treatment equipment for collaborative regulation of shape and property of large thin-walled head aluminum components according to the present invention;

[0032] Figure 5 Axonometric view of the heating zone;

[0033] Figure 6 Axonometric view of the heating zone;

[0034] Figure 7 Schematic diagram of the jointed upper air guiding spray arm: including the unfolded and retracted states of the rear jointed section;

[0035] Figure 8 Axonometric view of the cooling zone;

[0036] Figure 9 Axonometric view of the cooling zone;

[0037] Figure 10 Schematic diagram of the jointed and bendable structure: including the unfolded and retracted states;

[0038] Figure 11 Schematic diagram of the workpiece detection by the product detection system.

[0039] In the figure: 1 is the heating zone; 101 is the high-temperature circulation fan; 102 is the fan volute; 103 is the top air guide cover; 104 is the volute air adjustment mechanism; 105 is the suspension hanger rod; 106 is the arthropod-shaped upper air guide spray arm, 1061 is the front fixed section, 1062 is the rear arthropod-shaped section; 107 is the side air spray box one; 108 is the side air spray window; 109 is the top spray bracket; 110 is the side air spray box two; 111 is the lower air guide spray arm; 112 is the bottom air spray box; 113 is the bottom air spray box; 114 is the roller rod through-hole box; 2 is the cooling zone; 201 is the branch pipe guiding device; 202 is the branch pipe counterweight; 203 is the upper spray hose; 204 is the upper spray main pipe; 205 is the upper spray branch pipe; 206 is the upper spray nozzle; 207 is the arthropod-shaped bendable structure; 208 is the cap-shaped workpiece; 209 is the frame-type material tray; 210 is the workpiece transfer roller; 211 is the transfer roller frame; 212 is the lower spray branch pipe; 213 is the lower spray main pipe; 214 is the stainless steel shell; 215 is the lower spray nozzle; 216 is the lifting and rotating wheel; 3 is the loading zone; 31 is the first fixed steel frame for roller path; 32 is the first transfer roller; 4 is the unloading zone; 41 is the second fixed steel frame for roller path; 42 is the second transfer roller. Specific embodiments

[0040] The present invention will be further described in detail below with reference to the accompanying drawings.

[0041] When the prior art faces the co-line production requirements of low-frequency and multi-specification products such as ultra-large aluminum alloy cap-shaped workpieces, frame ring workpieces, and large-width plate-shaped workpieces, it can only increase the size of the effective working area to adapt to the production of the largest specification products, and cannot take into account the cap workpieces and plate workpieces with too large height differences. The increased size of the effective working area matches the limit size of the largest specification product, but the jet heating air field and the spray quenching flow field change due to disturbance after the low-height size products such as plate workpieces enter the effective working area, and cannot meet the co-line production requirements of ultra-large aluminum alloy cap-shaped workpieces, frame ring workpieces, and large-width plate-shaped workpieces.

[0042] In view of the problem that the size of the effective working area cannot be dynamically adapted during the co-line production of ultra-large aluminum alloy cap-shaped workpieces, frame ring workpieces, and large-width plate-shaped workpieces, the present invention invents a heat treatment device for collaborative regulation of the shape and properties of large thin-walled head aluminum components, which has the function of automatically detecting the limit size of products, adjusts the effective working area automatically during production to adapt to the workpiece specifications, improves the temperature uniformity and performance consistency of cap-shaped workpieces, frame ring workpieces, and large-width plate-shaped workpieces, and reduces the deformation caused by uneven solution treatment.

[0043] In order to reduce the types and quantities of investment equipment and improve the equipment utilization rate, the same set of shape-property collaborative control heat treatment equipment is shared for ultra-large aluminum alloy cap-shaped workpieces, frame ring workpieces, and large wide-width plate-shaped workpieces. The cap-shaped workpiece is a large thin-walled head aluminum component, with a maximum height of up to 2500 mm. The height of the frame ring workpiece generally ranges between 100 mm and 1000 mm. The height of the large wide-width plate-shaped workpiece is generally below 100 mm. The overall solution heat treatment process requirements for these aluminum alloy parts of super-large diameter rockets are high, the allowable deviation of the mechanical property test of each cross-sectional area after heat treatment is small, and the allowable range of quenching deformation is narrow. The main purpose of the invention is to provide a shape-property collaborative control heat treatment equipment for processing large thin-walled head aluminum components, enabling the co-linear production of ultra-large aluminum alloy cap-shaped workpieces, frame ring workpieces, and large wide-width plate-shaped workpieces, and making the performance and deformation amount of the aluminum alloy components after overall solution heat treatment meet the process requirements.

[0044] The shape-property collaborative control heat treatment equipment for the aluminum component consists of five parts: a loading area, a heating area, a cooling area, a discharging area, and an automatic control system.

[0045] 1. Loading area

[0046] The loading area consists of conveyor rollers, roller track fixed steel frames, conveyor drive systems, and product detection systems. The conveyor rollers are installed on the conveyor roller fixed steel frames. The conveyor drive system is installed on the lower side of one side of the conveyor roller fixed steel frame, and the conveyor rollers are driven by a frequency converter, a frequency conversion motor, and a sprocket chain, where the frequency converter is centrally placed in the production line control cabinet. The product detection system is installed on the furnace door columns on both sides of the feed furnace door in the heating area.

[0047] When the product is conveyed into the furnace in the loading area, the product detection system scans the entire product cross-section in the height direction, and the opposite signal of the height direction shielding detection system continuously changes. The obtained product cross-section height data is transmitted to the automatic control system, and the height data is in real-time correspondence with the conveying coordinates to complete the automatic scanning detection of the product.

[0048] After obtaining the product size information, the automatic control system automatically matches and checks with the subsequent production processes of the heating area and the cooling area.

[0049] 2. Heating area

[0050] The heating area consists of a heating furnace body, a heat-resistant conveying system, a heating circulation system, and a furnace door system.

[0051] The heating furnace body consists of a steel furnace shell and a refractory furnace lining. The inner cavity size of the refractory furnace lining needs to cover the maximum effective heating area and the heating circulation system in the furnace. The refractory furnace lining is fixed to the inner wall of the steel furnace shell.

[0052] The heat-resistant conveying system consists of heat-resistant conveying rollers, a heating conveying system, and a furnace internal monitoring system. The heat-resistant conveying rollers are installed on the bearing seat fixing plates on both sides of the lower part of the heating furnace body. The heating conveying system is installed at the bottom on one side of the heating furnace body, and uses a frequency converter, a variable-frequency motor, and a sprocket chain to drive the heat-resistant conveying rollers, where the frequency converter is centrally placed in the production line control cabinet. The furnace internal monitoring system is installed at both ends of the inlet and outlet of the heating furnace body, and on both sides of the furnace body at each end, a laser pair-emission signal transmitting module and a receiving module are respectively arranged. The heat-resistant conveying system can realize the continuous reciprocating swing of the workpiece on the roller path within the laser pair-emission area at both ends of the inlet and outlet, improving the uniformity of the product heating temperature.

[0053] The heating circulation system is arranged in zones. Each zone consists of two air suction cone openings, two high-temperature circulation fans, two fan volutes, two groups of electric heating systems, two groups of side air guiding boxes, a left arthropod-shaped upper air guiding spray arm, a right arthropod-shaped upper air guiding spray arm, a left lower air guiding spray arm, and a right lower air guiding spray arm to form a zone. In the example of the present invention, there are 3 zones. Each zone is divided into a left air guiding part and a right air guiding part from left to right. The left air guiding part and the right air guiding part are symmetrically arranged at 180 degrees with respect to the vertical center line of the equipment, and the two sides can be interchanged. The number of zones can be adjusted according to the actual situation.

[0054] The air suction cone opening is made by spinning heat-resistant steel and welded to the center part of the air guiding volute under the heat-resistant circulation fan. The heat-resistant circulation fan is fixed on the top of the heating furnace body, and its heat-resistant steel fan blades are arranged in the air guiding volute. The rotation of the heat-resistant circulation fan blades generates centrifugal force, driving the furnace gas to enter the fan from the air suction opening, and after exiting the fan, it travels along the air guiding volute towards the top air guiding cover on the furnace side. An electric heating system is arranged inside the top air guiding cover to heat the furnace gas to the solution temperature when the furnace gas passes through. The heated furnace gas travels downward along the air guiding boxes on both sides of the furnace.

[0055] In the example of the present invention, the two groups of air guiding boxes on the left and right sides are symmetrically arranged at 180 degrees with respect to the vertical center line of the equipment, and the two sides can be interchanged. The single-side air guiding box is evenly divided into two parts along the production axis direction: one part is installed with an arthropod-shaped upper air guiding spray arm, and the other part of the side air guiding box extends straight down to the bottom and is installed with a lower air guiding spray arm. The rear tail section of the arthropod-shaped upper air guiding spray arm on each side can be bent downward under program control to be close to the outer curved surface of the workpiece, forming an interlaced and through arched channel like the interlacing of the five fingers of both hands. The bending radian of the rear tail section of the arthropod-shaped upper air guiding spray arm can be adjusted according to the different radian of the workpiece.

[0056] After the hot furnace gas on each side of the furnace hearth flows through the single-sided air guiding box, half of it passes through the articulated upper air guiding spray arm and is ejected from the bottom nozzles of the upper air guiding spray arm towards the upper surface of the workpiece. The articulated upper air guiding spray arm is designed as a wedge shape in the straight state to meet the requirement of the jet wind speed consistency in the transverse direction. The other half of the hot furnace gas passes through the lower spray arm and is ejected from the top nozzles of the lower spray arm towards the lower surface of the workpiece. The lower spray arm is designed as a trapezoidal equalizing box structure, and the upper top nozzles are mushroom-shaped for scattering to meet the requirement of the jet wind speed consistency on the bottom surface of the workpiece.

[0057] The hot furnace gas ejected onto the surface of the workpiece, after exchanging heat with the workpiece, is then stirred and mixed with the cold furnace gas. Subsequently, it continues to be sucked into the air suction cone opening for the next heating cycle.

[0058] The furnace door system consists of a furnace door, furnace door columns, a lifting mechanism, and a sealing mechanism. The furnace door is composed of a steel shell and a heat-resistant lining. The furnace door columns are fabricated by welding section steel. The lifting mechanism is installed at the furnace top position above the furnace door and consists of a lifting motor, a sprocket chain, and a lifting limit detection element. The sealing mechanism is composed of a pressing cylinder and pneumatic mechanism components. The furnace door is only opened when the workpiece enters and exits the heat treatment furnace, and is in a closed, pressed, and sealed state at other times.

[0059] 3. Cooling Zone

[0060] The cooling zone consists of a stainless steel shell, an anti-rust conveying system, an upper spray quenching system, a lower spray quenching system, a quenching circulation system, and a spray quenching control system.

[0061] The stainless steel shell is fabricated by welding section steel and steel plates. It is used to fix the conveying system, spray quenching pipelines, and circulation system, and to gather the cooling water after quenching.

[0062] The anti-rust conveying system consists of anti-rust conveying rollers, a quenching cooling conveying system, and a transmission monitoring system. The anti-rust conveying rollers are installed on the lower steel structure of the stainless steel shell. The quenching cooling conveying system is installed at the single-sided bottom of the stainless steel shell and uses a frequency converter, a variable-frequency motor, a coupling, and a sprocket chain to drive the anti-rust conveying rollers, where the frequency converter is centrally placed in the production line control cabinet. The transmission monitoring system is installed at both ends of the inlet and outlet of the quenching cooling conveying system at the bottom. The quenching cooling conveying system can achieve continuous reciprocating swinging of the workpiece on the roller path within the working area of the cooling zone, improving the uniformity of the quenching temperature of the product.

[0063] The upper spray quenching system consists of a branch pipe guiding device, a branch pipe counterweight, an integrated stepping motor, an upper spray main pipe, an upper spray hose, upper spray branch pipes, upper spray nozzles, a flowmeter, a pressure sensor, and an upper spray electric regulating valve. The upper spray branch pipes can move up and down along the auxiliary guiding device. The branch pipe counterweight designed outside the branch pipe guiding device matches the weight of the upper spray branch pipes, and the height of the upper spray branch pipes is actively adjusted by the integrated stepping motor to distribute the quenching cooling water jet from above to the quenching working area. After the workpiece information collected by the product detection system is programmatically identified (such asFigure 11 ), which can drive the integrated stepper motor in the guide device. The stepper motor drives the lifting and rotating wheel to rotate and move the upper spray branch pipe to the required position. The height position of the upper spray branch pipe is transmitted back to the automatic control system by the lifting and rotating wheel rotary encoder. When the real-time position of the upper spray branch pipe does not match the instruction given after the master control calculation, it will automatically alarm and start the vibration mode. The integrated stepper motor will repeatedly vibrate in a short period of time in the forward and reverse directions to achieve the effect of repeatedly impacting the impurities at the stuck point in the slideway of the extrusion guide device. If the position of the upper spray branch pipe is consistent with the master control instruction after the vibration mode, the alarm is lifted and the automatic quenching and cooling process will continue to be executed. Otherwise, the automatic operation will be interrupted and handled manually. Furthermore, 20 minutes before each quenching process, the water pump of the circulation system is not started, and a waterless quenching action is automatically simulated to run as a self-check preventive measure to reduce the risk of mechanical deformation and jamming failures and improve the early warning capability of the quenching machine tool.

[0064] The two ends of the four rows of upper spray branch pipes in the middle position of the quenching machine are designed as segmented bendable structures. The rear 2 / 5 sections of the segmented upper spray branch pipes on each side can be bent downward under program control through the built-in integrated stepper motor-driven lifting and rotating wheels to get close to the outer curved surface of the workpiece, thereby achieving the function of balanced matching of the quenching water flow at the center top, waist and lower outer surface of the middle position of the super-large aluminum alloy hat-shaped workpiece.

[0065] The lower spray quenching nozzle is composed of a lower spray nozzle, a lower spray branch pipe, a lower spray main pipe, a flow meter, a pressure sensor, and a lower spray electric regulating valve. It is arranged below the anti-rust transmission system in the stainless steel shell and fixed on the lower steel structure of the stainless steel shell.

[0066] The quenching circulation system consists of a water tank, a water supply pump, a water supply valve group, and a return pump.

[0067] The rust-proof conveying system quickly conveys the workpieces transported out of the heat treatment furnace to the working area of the quenching equipment. The water supply pump pumps high-pressure water from the water pool, and enters the upper spray main pipe and the lower spray main pipe respectively after passing through the water supply valve group. The upper spray main pipe is arranged left and right along the production axis. The high-pressure water in the upper spray main pipe is evenly distributed into each upper spray branch pipe through the upper spray hose. The high-pressure water in the upper spray branch pipe is evenly sprayed onto the workpiece through the upper spray nozzle. All upper spray branches and upper spray nozzles are arranged on the same horizontal plane in the initial state. The lower spray main pipe is arranged below the rust-proof conveying system along the running direction of the workpiece. The high-pressure water in the lower spray main pipe is evenly distributed into each lower spray nozzle through the lower spray branch pipe. The lower spray nozzle is evenly arranged in the gap between the workpiece conveying rollers and sprays upward to cool the workpiece. The spray quenching cooling water in the cooling zone is sprayed onto the workpiece from both the upper and lower directions. Adaptive quenching cooling process for super-large aluminum alloy hat-shaped workpieces, frame ring parts and large-width plate-shaped workpieces.

[0068] When producing frame ring parts and plate-shaped workpieces, driven by an integrated stepping motor, all the upper spray branch pipes and upper spray nozzles automatically lower according to the instructions issued by the master control to be applicable to the through-scan cooling of products of various heights, and can also be used for the simultaneous overall cooling of frame ring parts. The upper spray main pipes, upper spray hoses, upper spray branch pipes, and upper spray nozzles on both sides are symmetrically arranged along the axis center of the workpiece.

[0069] When producing large thin-walled head aluminum components, namely super-large aluminum alloy hat-shaped workpieces, all the upper spray branch pipes and upper spray nozzles automatically lift and lower according to the instructions issued by the master control to simultaneously copy and match the product size and radian in the production axis direction and width direction, and high-pressure water is evenly sprayed from the upper spray nozzles onto the upper surface of the workpiece. Overall solution quenching is carried out to improve the uniformity of the spray quenching cooling temperature.

[0070] Furthermore, the nozzles of the quenching machine tool are all equipped with compressed air supply pipelines, which can seamlessly switch between the water spraying, spraying, and air spraying modes according to the process requirements in different thickness areas of different products, obtain different cooling process curves, and realize the function of customized strength cooling for product zoning.

[0071] After the cooling process is completed, the cooling water is pumped back to the pool by the return water pump.

[0072] 4. Unloading area

[0073] The unloading area is similar to the loading area and consists of conveyor rollers, roller path fixed steel frames, and conveyor drive systems. The conveyor rollers are installed on the conveyor roller fixed steel frames. The conveyor drive system is installed under one side of the conveyor roller fixed steel frame, and the conveyor rollers are driven by a frequency converter, a variable frequency motor, and a sprocket chain, where the frequency converter is centrally placed in the production line control cabinet.

[0074] 5. Automatic control system

[0075] The automatic control system consists of a conveyor master control, a heating master control, a furnace door control, a fan control, a water pump control, a valve group control, and a quenching lifting control.

[0076] The above-mentioned heat treatment equipment for the coordinated regulation of the shape and properties of large thin-walled head aluminum components can enable the co-line production of super-large aluminum alloy hat-shaped workpieces, frame ring parts, and large-width plate-shaped workpieces, and make the performance and deformation of the aluminum alloy components meet the process requirements after overall solution heat treatment.

[0077] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A heat treatment device for collaborative regulation of shape and property of large thin-walled head aluminum components, characterized in that It includes a loading area (3), a heating area (1), a cooling area (2) and a discharging area (4) which are arranged and connected in sequence; The loading area (3) includes a first fixed steel frame for roller tracks (31), and a plurality of first conveyor rollers (32) are installed on the first fixed steel frame for roller tracks (31) and are used for conveying workpieces into the heating area (1); a driving system for the loading area is installed below the first fixed steel frame for roller tracks (31) and is used for driving the first conveyor rollers (32); The heating area (1) includes a heating furnace body, a heat-resistant conveying system and a heating circulation system are installed inside the heating furnace body, and a furnace door system is installed on the feeding side and the discharging side of the heating furnace body; the heating area (1) is used for heat-treating workpieces that need heat treatment; The cooling area (2) includes a stainless steel shell (214), an anti-rust conveying system is installed below the interior of the stainless steel shell (214), an upper spray quenching system is installed above the interior of the stainless steel shell (214), and a lower spray quenching system is installed below the anti-rust conveying system; a quenching circulation system is arranged outside the stainless steel shell and provides quenching cooling water source for the upper spray quenching system and the lower spray quenching system; the cooling area (2) is used for quenching and cooling the workpieces that have been heat-treated in the heating area (1); The discharging area (4) includes a second fixed steel frame for roller tracks (41), and a plurality of second conveyor rollers (42) are installed on the second fixed steel frame for roller tracks (41) and are used for conveying workpieces to the next process; a driving system for the discharging area is installed below the second fixed steel frame for roller tracks (41) and is used for driving the second conveyor rollers (42); The anti-rust conveying system in the cooling area (2) includes a conveyor roller frame (211), and workpiece conveyor rollers (210) are installed on the conveyor roller frame (211); an upper spray quenching system is suspended and installed above the workpiece conveyor rollers (210), and a lower spray quenching system is installed below the conveyor roller frame (211); the upper spray quenching system can adjust the position of the nozzle relative to the workpiece according to the shape of the workpiece being processed; The lower spray quenching system includes a lower spray main pipe (213), a plurality of lower spray branch pipes (212) led out from the lower spray main pipe (213) are arranged between the conveyor rollers, and lower spray nozzles (215) are uniformly arranged on the lower spray branch pipes (212), and the lower spray nozzles (215) spray upward to cool the workpieces; The upper spray quenching system includes an upper spray main pipe (204). Multiple upper spray hoses (203) are led out from the upper spray main pipe (204). The multiple upper spray hoses (203) are connected to a plurality of upper spray branch pipes (205) one by one. A plurality of upper spray nozzles (206) are evenly arranged on the upper spray branch pipes (205). The upper spray nozzles (206) spray downward to cool the workpiece. The upper spray quenching system further includes a branch pipe guiding device (201). Each upper spray branch pipe (205) can slide up and down along the branch pipe guiding device (201). A plurality of branch pipe weights (202) are also provided on the branch pipe guiding device (201). The above-mentioned branch pipe weights (202) are connected to each upper spray branch pipe (205) one by one through the branch pipe guiding device (201), and move up and down simultaneously as the upper spray branch pipe (205) slides up and down along the branch pipe guiding device (201). Each upper spray branch pipe (205) can adjust its position relative to the workpiece according to the shape of the workpiece to be processed through the branch pipe guiding device (201). Arthropod-like bendable structures (207) are provided at both ends of the upper spray branch pipe (205). The arthropod-like bendable structures (207) can be driven by the integrated stepping motors built therein to drive the lifting and rotating wheels (216) to bend downward to closely adhere to the outer curved surface of the workpiece. Product detection systems are provided on the columns on both sides of the feeding furnace door in the heating zone (1). The product detection systems are composed of a light signal emission end and a light signal receiving end. The light signals emitted by the light signal emission end on one side door post are blocked by the cross-sectional heights of different workpieces and irradiate the light signal receiving end on the other side door post. After the sampling data of the light signal receiving end is input into the automatic control system, it jointly forms the cross-sectional height data of the workpiece with the workpiece position coordinates at the current time point. The automatic control system controls the bending actions of the rear arthropod-like section (1062) of the arthropod-like upper air guiding spray arm (106) in the heating zone (1) and the arthropod-like bendable structure (207) in the cooling zone (2) to match the outer curved surface of the workpiece according to the workpiece cross-sectional height data.

2. The heat treatment equipment for collaborative control of shape and property of large thin-walled head aluminum components according to claim 1, characterized in that: The heating circulation system in the heating zone (1) includes a high-temperature circulation fan (101). A fan volute (102) is located outside the high-temperature circulation fan (101). The air outlet part of the fan volute (102) is connected to a top air guiding cover (103). A heater is installed inside the top air guiding cover (103). The air guiding cover (103) connected to the fan volute (102) of the high-temperature circulation fan (101) is connected to a side air spraying box one (107) and a side air spraying box two (110). A plurality of side air spraying windows (108) are provided at the lower parts of the side air spraying box one (107) and the side air spraying box two (110). A side air spraying box one (107) and a side air spraying box two (110) are connected above. An arthropod-like upper air guiding spray arm (106) is provided below the arthropod-like upper air guiding spray arm (106). A plurality of air spraying openings are provided at the lower part of the arthropod-like upper air guiding spray arm (106). After the high-temperature furnace gas is heated by the heater, it is respectively sprayed out from the air spraying openings through the arthropod-like upper air guiding spray arm (106), the side air spraying box one (107) and the side air spraying box two (110). Below the side air injection box 1 (107) and the side air injection box 2 (110), there is a connecting roller hole box (114). The roller hole box (114) is connected to the lower air guiding spray arm (111) located at the bottom of the heating zone (1). Multiple top spray nozzles are provided on the upper part of the lower air guiding spray arm (111). After the high-temperature furnace gas is heated by the heater, it passes through the side air injection box 1 (107) or the side air injection box 2 (110), the roller hole box (114) and the lower air guiding spray arm (111) in sequence, and is sprayed out from the side air injection window (108) and the top nozzles of the lower air guiding spray arm (111). The heat-resistant conveying system consists of heat-resistant conveying rollers, a heating conveying system, and a furnace internal monitoring system. The heat-resistant conveying rollers are installed on the bearing seat fixing plates on both sides of the lower part of the heating furnace body. The heating conveying system is installed at the single-side bottom of the heating furnace body. The furnace internal monitoring system is installed at both ends of the inlet and outlet of the heating furnace body. On both sides of the furnace body at each end, a laser pair-emission signal transmitting module and a receiving module are respectively arranged. The heat-resistant conveying system can realize the continuous reciprocating swing of the workpiece on the roller path within the laser pair-emission area at both ends of the inlet and outlet, improving the heating temperature uniformity of the product. The furnace door system includes a furnace door. The furnace door is installed on the furnace door column, and the top of the furnace door is connected to the lifting mechanism. The lifting mechanism is installed at the furnace top position above the furnace door and consists of a lifting motor, a sprocket chain, and a lifting limit detection element. The lifting mechanism is used to control the lifting of the furnace door. A sealing mechanism is provided around the furnace door. The sealing mechanism consists of a pressing cylinder and pneumatic mechanism components. The sealing mechanism is used to seal the furnace door. The furnace door is only opened when the workpiece enters and exits the heating zone (1), and is in a closed, pressed and sealed state at other times.

3. A heat treatment device for collaborative regulation of shape and property of large thin-walled head aluminum components according to claim 2, characterized in that: The arthropod-shaped upper air guiding spray arm (106) is divided into a front fixed section (1061) and a rear arthropod-shaped section (1062). The rear arthropod-shaped section (1062) can be bent downward to be close to the outer curved surface of the workpiece.

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