CN218089722U

CN218089722U - Sheet covering part product production line

Info

Publication number: CN218089722U
Application number: CN202221155688.7U
Authority: CN
Inventors: 郑潇然; 郑峰; 彭凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-12-20
Anticipated expiration: 2032-05-13

Abstract

The utility model discloses a sheet metal covering product production line, include: the strip production equipment is arranged at the starting end of the production line and is used for producing strips; the solution quenching equipment is arranged behind the strip production equipment and can perform solution quenching treatment on the strip produced by the strip production equipment; the strip cutting device is arranged behind the solid solution quenching equipment and is used for cutting the strip subjected to solid solution quenching into plates; and the product forming device is arranged behind the strip cutting device and is used for cutting the obtained plate and processing the plate into products. The problem of difficult molding of high-strength aluminum alloy can be solved.

Description

Sheet covering part product production line

Technical Field

The utility model relates to a high strength aluminum alloy plate produces technical field, especially relates to a sheet metal covering product production line.

Background

The production of the covering part by the high-strength aluminum alloy plate has three common key problems between forming and formability: firstly, the problem that the elongation is reduced after aging (including natural aging and artificial aging) to cause difficult molding is solved; secondly, the anodic oxidation performance is poor, which is mainly represented by poor color difference and wear resistance and corrosion resistance of the film; thirdly, the production of the strip and the production of the product are finished in different enterprises in different places, the time from the production of the strip to the completion of the forming is longer, and the effective utilization rate of the waste is lower in the production enterprises of the product.

High strength aluminium alloys are commonly used in the aged state, such as 7075, 2a12 etc. However, such materials have a relatively low elongation (typically less than 10%) at relatively high strengths (400-700 MPa). In particular, peak-time efficacy achieves the highest strength but low elongation, and thus its deformability after peak aging is rather limited. However, high strength aluminum alloys have a relatively high elongation in solution, typically 25 to 40%. Such elongation is the basic condition for "deep drawing", but the "length of time" for maintaining this "deep drawing" condition is short, and usually does not exceed 48 hours after quenching is completed. And the shorter the "time length" is, the higher the efficiency of the "deep drawing" is, the better the effect is.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a sheet metal covering product production line can solve the difficult problem of high strength aluminum alloy shaping.

According to the utility model discloses a sheet metal covering product production line, include:

the strip production equipment is arranged at the starting end of the production line and is used for producing strips;

the solution quenching equipment is arranged behind the strip production equipment and can perform solution quenching treatment on the strip produced by the strip production equipment;

the strip cutting device is arranged behind the solution quenching equipment and is used for cutting the strip subjected to solution quenching into plates;

and the product forming device is arranged behind the strip cutting device and is used for cutting the obtained plate and processing the plate into products.

According to the utility model discloses sheet metal covering product production line has following beneficial effect at least: the utility model discloses on integrating production, solid solution quenching and the product production of strip to a production line for panel can just can carry out the machine-shaping of panel in the short time (no longer than 48 hours) after quenching is accomplished, and in this period of time, panel has higher percentage elongation, is convenient for process into various needs products with panel, has solved the problem of present high strength aluminum alloy processing difficulty. Meanwhile, the waste materials generated in the processing process of the plate can also be directly sent to a metal smelting system for smelting again, so that the utilization rate of the waste materials is improved.

According to some embodiments of the invention, the solution quenching apparatus comprises:

the solid solution heating furnace comprises a furnace body, a heating device and a cooling device, wherein the furnace body is provided with a feeding window and a discharging window, and a solid solution heating system is arranged in the furnace body;

the upper row of roller sets comprises a plurality of upper rotating rollers which are horizontally arranged in the furnace body, and the upper rotating rollers are arranged in parallel along the direction from the feeding window to the discharging window;

the lower roller group comprises a plurality of lower rotating rollers which are horizontally arranged in the furnace body, the lower rotating rollers are arranged in parallel along the direction from the feeding window to the discharging window, the lower rotating rollers are arranged below the upper rotating rollers, and the lower rotating rollers and the upper rotating rollers are arranged in parallel and in a staggered manner;

a constant tension floating system capable of adjusting a vertical distance between the upper rotating roller and the adjacent lower rotating roller;

the feeding system is used for feeding the strip produced by the strip production equipment into the furnace body from the feeding window, winding the strip between the upper rotating roller and the lower rotating roller and pulling the strip out from the discharging window;

and the quenching device is arranged on the moving path of the strip material and is used for quenching the strip material after heat treatment.

According to the utility model discloses a some embodiments, solid solution heating system includes circulating fan, direction wind channel and heating device, the direction wind channel with circulating fan connects, heating device sets up in the direction wind channel, the direction wind channel is equipped with a plurality of air outlets, the direction wind channel passes through the air outlet can to hang around go up the rotor roll with two faces of the strip on the lower rotor roll are bloied.

According to the utility model discloses a some embodiments, the constant tension floating system includes a plurality of first position control device, the rigidity of going up the rotor, each the lower rotor all with one the first position control device is connected, first position control device can adjust the position of lower rotor in the vertical direction.

According to the utility model discloses a some embodiments, permanent tension floating system includes a plurality of second position control device, the rigidity of lower rotor, each go up the rotor all with one the second position control device connects, second position control device can adjust go up the rotor in the position of vertical direction.

According to some embodiments of the utility model, the feed window with discharge window all is equipped with high-pressure hot gas flow injection apparatus, can spray high-pressure hot gas flow to the strip of process.

According to the utility model discloses a some embodiments, feeding system includes material loading power roller, guide roller group, tension roller and haulage rope, material loading power roller sets up outside the furnace body, and be close to feeding window sets up, tension roller sets up outside the furnace body, and be close to discharge window sets up, the haulage rope sets up material loading power roller with on the tension roller, the haulage rope can with the transmission strip fixed connection, guide roller group includes that a plurality of settings are in guide roller in the furnace body can be right the haulage rope leads, makes the haulage rope drives the strip is around hanging go up the turning roll with between the lower turning roll, and follow discharge window pulls out.

According to the utility model discloses a some embodiments still include haulage rope tension adjusting device, haulage rope tension adjusting device with the tension roll is connected, can adjust the tension of haulage rope.

According to some embodiments of the utility model, the guenching unit includes water spray roof beam and lower water spray roof beam, go up the water spray roof beam with water spray roof beam longitudinal symmetry sets up down and forms the strip and pass the passageway, go up the water spray roof beam with all be equipped with the quenching medium nozzle on the opposite face of water spray roof beam down.

According to some embodiments of the utility model, still include protective gas feeding device, protective gas feeding device with furnace body connected can to let in protective gas in the furnace body. According to some embodiments of the present invention, the,

according to some embodiments of the utility model, still include the oxidation treatment device, the oxidation treatment device sets up product forming device rear for carry out surface oxidation treatment to the product after the shaping.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a flow chart of a production line of a sheet covering product according to an embodiment of the present invention;

FIG. 2 is a schematic front structural view of a solution quenching apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic plan view of a solution quenching apparatus according to an embodiment of the present invention.

Reference numerals:

100. a furnace body; 110. a feed window; 120. a discharging window; 200. an upper rotating roller; 300. a lower turning roll; 400. a constant tension flotation system; 510. a circulating fan; 520. a guide air duct; 530. a heating device; 600. a strip of material; 710. cold rolling the coil; 720. a winding machine; 731. a feeding power roller; 732. a guide roller set; 733. a tension roller; 734. a hauling rope; 740. a quenching device; 741. an upper water spraying beam; 742. a lower water spray beam; 743. a quench media nozzle; 750. haulage rope tension adjusting device.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In addition, the technical solutions of the embodiments of the present invention can be combined with each other, but it is necessary to use a person skilled in the art to realize the basis, and when the technical solutions are combined and contradictory to each other or cannot be realized, the combination of the technical solutions should not exist, and is not within the protection scope of the present invention.

As shown in fig. 1, according to the utility model discloses sheet metal covering product production line includes:

In this embodiment, the strip production equipment comprises a metal melting system, an annealing furnace for processing metal materials, and a hot rolling mill and a cold rolling mill for hot rolling, cold rolling and the like to obtain strips. The equipment and the production process belong to the prior art. In addition, the specific production process of the strip material can also be adjusted according to specific needs, and is not limited herein.

After the strip is rolled and formed, the strip is sent into a solid solution quenching device to carry out solid solution quenching treatment on the strip, the solid solution time is determined according to the thickness of a plate material, the range is 3-10 min/mm, and the solid solution temperature is determined according to the material and is generally less than 600 ℃. After the strip materials are subjected to solution quenching, the treated strip materials are cut into plates with required sizes by a strip material cutting device, the cut plates are sent to a product forming device, and all stamping and forming processes such as bending, stretching, blanking, flanging, reaming, hole shrinking, spinning and the like are carried out on the products.

The whole production line is continuously carried out, so that the plate can be processed and formed in a short time (generally within 0-5 hours, and the longest time is not more than 48 hours) after quenching is finished, and the plate has higher elongation in the time, so that the plate can be processed into various required products conveniently, and the problem of difficulty in processing the high-strength aluminum alloy at present is solved. After the forming is finished, the aging treatment (natural aging or artificial aging) is carried out, and the plate obtains high-strength performance after aging. Meanwhile, the waste materials generated in the processing process of the plate can also be directly sent to a metal smelting system for smelting again, so that the utilization rate of the waste materials is improved.

Before the strip is sent into the product forming device, the procedures of polishing, cleaning, stripping and the like can be added, and the polishing, the cleaning and the stripping are not necessary to be equipped in the production line but can be selectively used. Or the equipment is constructed on the continuous production line and is selectively used according to the requirement.

The polishing machine is a sand belt type polishing machine, the polishing machine is polished on two sides, cleaning and drying are carried out immediately after polishing, the surface of the aluminum plate is lubricated and protected immediately after drying is finished, the lubricating material is preferably a high molecular material, a layer of tightly-combined high molecular film is formed on the surface of the aluminum plate, the film has large cohesive force at room temperature, but loses the cohesive force at 80-100 ℃. The laminating machine is used for spraying a layer of polymer film on the surface of the strip or sticking a layer of polymer film on the surface of the strip, and the film is characterized in that: the thickness is uniform and is about 0.01-0.1 mm, and the lubricating oil has good lubricating performance and breakage-proof capability.

The time from the beginning of the solution quenching to the completion of the product forming production is controlled within a limited time, and the total time from the solution quenching equipment to the completion of the product forming device is optimally controlled within 0-5 hours, and the maximum time is not more than 48 hours.

Immediately connecting the solution-quenched steel wire with a tension leveler, and immediately connecting the solution-quenched steel wire with a multi-roll straightener after the tension leveler; the tension leveler comprises 1-4 pairs of S rollers, the diameter of the S roller is about 30-72 mm, and the tension stress of the tension leveler is about 5-50 MPa; the multi-roll straightener is a 9-27-roll straightener, and the roll diameter is about 25-62 mm.

From the strip cutting device to the product forming device is a sheet material transfer and feeding system for feeding the cut sheet material into the product forming device and completing the forming of the product in a short time, preferably in the range of 0 to 5 hours, up to 48 hours.

The punch/oil press is a product forming device and is responsible for punching the plate into the required shape and size of the product. Therefore, the device comprises three parts, namely equipment, a mould and a feeding system. The feeding system can be a mechanical arm or a manual feeding system.

The specific embodiment is as follows:

notebook computer shell:

7055 plate, 0.50mm thick, solution quenching temperature 470-475 ℃, solution time 3-5 min, quenching transfer time 0.5-1 s, finishing stretching in 3 hours after solution quenching, elongation of material being more than or equal to 27% during stretching, minimum relative bending radius being 0.4, minimum stretching fillet being R2.5, stretching depth being 4.5mm, aging after stretching, strength being 700MPa after aging, elongation being 7%. Good forming effect, high rigidity and strength, and especially strong anti-sinking and anti-impact capability.

Comparative example:

7055 the plate is 0.5mm thick, the solution quenching temperature is 470-475 ℃, the solution time is about 3-5 min, the quenching transfer time is about 0.5-1 s, the stretching is completed in 6 hours after the solution quenching, the elongation of the material is reduced to about 15% during stretching, the minimum relative bending radius is 0.4, the minimum stretching fillet is R2.5, the stretching depth is 4.5mm, the aging is performed after the stretching, the strength is 700MPa after the aging, and the elongation is 7%. But the forming effect is poor, orange peel is formed at the bending radius, and micro-cracking is formed at the round corner.

Automobile door:

2195 plate, thickness 1.0mm, solution quenching temperature about 475-490 deg.C, solution time about 4-10 min, quenching transfer time about 1-1.5 s, stretching at 3h after solution quenching, elongation not less than 30% during stretching, minimum relative bending radius 0.5, minimum stretching fillet R3, maximum stretching depth 115mm, aging after stretching, strength not less than 600MPa after aging, elongation not less than 8%, good forming effect, large rigidity of door parts, high strength, especially strong dent resistance and impact resistance.

Comparative example:

2195 plate material with thickness of 1.0mm. The solid solution quenching temperature is about 480-490 ℃, the solid solution time is about 4-10 min, the quenching transfer time is about 1-1.5 s, stretching is carried out at the 12 th hour after the solid solution quenching, the elongation rate is reduced to about 16% during stretching, the minimum relative bending radius is 0.5, the minimum stretching fillet R3 and the maximum stretching depth is 115mm, aging is carried out after stretching, the strength is more than or equal to 600MPa after aging, the elongation rate is more than or equal to 8%, the forming effect is poor, obvious cracking phenomena occur at both bending positions and fillet positions, and deep stretching cannot be realized.

The traveling case:

7075 the plate has the thickness of 0.5, the solution quenching temperature of about 470-475 ℃, the solution time of about 3-5 min, the quenching transfer time of about 0.5-1 s, the plate is stretched or bent 3 hours after solution quenching, the elongation rate is more than or equal to 35% during stretching, the minimum relative bending radius is R0.4, the minimum stretching fillet is R2, the maximum stretching depth is 120mm, the aging is carried out after stretching, the strength is 600MPa after the peak aging, the elongation rate is about 8%, the forming effect is good, the strength and the rigidity of the box body are far greater than those of common plastic materials, and the box body has very strong impact resistance.

Comparative example:

7075 the plate has the thickness of 0.5mm, the solution quenching temperature of about 470-475 ℃, the solution time of about 3-5 min, the quenching transfer time of about 0.5-1 s, the plate is stretched or bent in 48 hours after the solution quenching, the elongation during stretching is reduced to about 18%, the minimum relative bending radius is R0.4, the minimum stretching fillet is R2, the maximum stretching depth is 120mm, the plate is aged after stretching, the strength is 600MPa after the peak aging, the elongation is about 8%, but the forming effect is greatly reduced, the plate is completely cracked at the fillet, and obvious microcracks appear at the bending radius, which indicates that the plate does not have the deep stretching capability.

A tablet computer case:

7075 plate, 0.7mm thick, solution quenching temperature of 470-475 deg.C, solution time of 5-8 min, quenching transfer time of 1.5s, finishing stretching to obtain final product within 4 h after solution quenching, finishing black anodic oxidation within 5 h after quenching, aging at 120 deg.C for 16 h, after aging, material strength of 580-590 MPa, elongation of 10%, oxide film with bright color, thickness of 10-15 um, and no corrosion spot after standard salt spray corrosion for 96 h.

Comparative example:

7075 the plate has the thickness of 0.7mm, the solution quenching temperature of about 470-475 ℃, the solution time of about 5-8 min, the quenching transfer time of about 1.5s, the finished product is stretched within 4 hours after the solution quenching, then the aging is carried out at 120 ℃ for 16 hours, the material strength after the aging is about 585-595 MPa, and the elongation is 10%. Black anodic oxidation is carried out within 1 hour after aging, the oxide film has uneven color and no luster, the thickness is 10-15 um, and a small amount of corrosion spots appear after standard salt spray corrosion for 96 hours.

As shown in fig. 2 and 3, in some embodiments of the present invention, the solution quenching apparatus comprises:

the furnace comprises a furnace body 100, wherein the furnace body 100 is provided with a feeding window 110 and a discharging window 120, and a solid solution heating system is arranged in the furnace body 100;

the upper row of roller sets comprises a plurality of upper rotating rollers 200, the upper rotating rollers 200 are horizontally arranged in the furnace body 100, and the upper rotating rollers 200 are arranged in parallel along the direction from the feeding window 110 to the discharging window 120;

the lower roller group comprises a plurality of lower rotating rollers 300, the lower rotating rollers 300 are horizontally arranged in the furnace body 100, the lower rotating rollers 300 are arranged in parallel along the direction from the feeding window 110 to the discharging window 120, the lower rotating rollers 300 are arranged below the upper rotating rollers 200, and the lower rotating rollers 300 and the upper rotating rollers 200 are arranged in parallel and in a staggered mode;

the arrangement that the lower rotating roller 300 and the upper rotating roller 200 are parallel and staggered means that: as shown in fig. 1, the lower and upper

rotating rollers

300 and 200 are arranged in parallel up and down, but the lower and upper

rotating rollers

300 and 200 are not in the same vertical plane, so that the strip 600 can be hung on the lower and upper

rotating rollers

300 and 200 in an S-shaped pattern. It should be noted that the lower rollers 300 do not necessarily have to be in a horizontal plane, nor does the upper rollers 200 necessarily have to be in a horizontal plane.

The constant tension floating system 400 can adjust the vertical distance between the upper rotating roll 200 and the adjacent lower rotating roll 300.

A feeding system for feeding the strip 600 produced by the strip production equipment into the furnace body 100 through the feeding window 110, winding between the upper rotating roller 200 and the lower rotating roller 300, and pulling the strip 600 out of the discharging window 120;

and a quenching apparatus 740 disposed on a moving path of the strip material 600, for quenching the heat-treated strip material 600.

When the strip 600 is subjected to the solution heat treatment, the solution heating system is started to enable the temperature required by the solution heating in the furnace to be achieved, the strip 600 produced by the strip production equipment continuously enters the furnace body 100 from the feeding window 110 through the feeding system, is suspended on the upper rotating roller 200 and the lower rotating roller 300 in an up-and-down mode, then exits from the discharging window 120, is subjected to quenching treatment through the quenching device 740, is subjected to solution quenching, and then is continuously conveyed along the production line.

During the heat treatment, the tension of the strip 600 acting on the upper rotating roller 200 and the lower rotating roller 300 is about 5-35% of the yield strength of the material in the corresponding hot state, and the strip 600 is in a tight state under the action of the gravity of the strip 600, so that the plate type of the strip 600 can be kept in a good state, and the heat treatment quality of the strip 600 is ensured.

And strip 600 adopts the mode of hanging one on top of the other, and under the condition that efficiency is equivalent, the utility model discloses a provided area of heat treatment stove is about only one tenth of steam cushion stove, and the space height is about only one half of steam cushion stove, and the investment also will reduce by a wide margin.

In addition, the vertical distance between the upper rotating roller 200 and the adjacent lower rotating roller 300 is adjusted by the constant tension floating system 400, so that the tension of the suspended strip material 600 can be adjusted, the strip material 600 can be ensured to be in a tight state even if the strip material 600 is deformed due to heating in the heat treatment process, and the plate shape of the strip material 600 is maintained. The whole solution quenching is continuously carried out, and the treatment efficiency is greatly improved by adopting the continuous treatment mode.

In this embodiment, the strip 600 produced by the strip production facility may be fed directly into the furnace 100, or may be wound into a cold rolled coil 710 and then transferred into the furnace 100. The strip 600 after quenching treatment can also be directly transmitted in the form of a strip, or can be wound into a hot-rolled coil by the winder 720, and then the hot-rolled coil is transferred to a subsequent production line for use.

In some embodiments of the present invention, the solid solution heating system includes a circulating fan 510, a guiding air duct 520 and a heating device 530, the guiding air duct 520 is connected to the circulating fan 510, the heating device 530 is disposed in the guiding air duct 520, the guiding air duct 520 is provided with a plurality of air outlets, and the guiding air duct 520 can blow air to the two surfaces of the strip 600 hung on the upper rotating roller 200 and the lower rotating roller 300 through the air outlets.

In the process of heating the furnace by the solid solution heating system, the circulating fan 510 is started to drive the guide air duct 520 and the air in the furnace to circularly flow, the air guided to the air duct 520 is heated by the heating device 530 when flowing through the heating device 530 (an electric heating wire and the like), and the heated air is blown out from the air outlet. The setting of the mouth of blowing needs to blow around hanging two faces of strip 600 on last live-rollers 200 and lower live-rollers 300, and two faces of strip 600 all can be heated promptly for strip 600 is heated more evenly, and the solid solution effect is better. The specific arrangement of the blowing ports is not limited herein, and is according to the trend arrangement of the web 600.

In some embodiments of the present invention, the constant tension floating system 400 includes a plurality of first position adjusting devices, the position of the upper rotating roller 200 is fixed, each lower rotating roller 300 is connected to one first position adjusting device, and the first position adjusting device can adjust the position of the lower rotating roller 300 in the vertical direction.

When the heat treatment furnace is used for treating the strip 600, the strip 600 is continuously fed, and the treatment efficiency is greatly improved by the continuous treatment mode. However, in the process that the strip 600 enters from the feeding window 110 and then exits from the discharging window 120, the temperature difference of the strip 600 at different positions is relatively large (the temperature near the feeding window 110 is low, and the temperature near the discharging window 120 is high), when the temperature of the strip 600 is different, the elongation of the strip 600 is relatively large, and the deformation amount of the strip 600 closer to the discharging window 120 may be larger (specifically, related to the material, the furnace temperature, etc.) under the same tension condition.

In the embodiment, each lower rotating roller 300 is connected with one first position adjusting device, and each lower rotating roller 300 can be independently adjusted, so that the lower rotating rollers 300 at corresponding positions can be adjusted according to the condition that the strip material 600 is at different positions, and all the positions of the strip material 600 are always in a tightening state.

Specifically, the upper rotating roller 200 and the lower rotating roller 300 are both installed on the bearing seats, and the purpose of adjusting the vertical distance between the upper rotating roller and the lower rotating roller is achieved by adjusting the positions of the corresponding bearing seats. The first position adjustment device may be a hydraulic tension system, a servo motor ball screw system, or the like.

During the belt material transfer process, no slip, i.e., pure rolling, is generated between the upper and lower

rotating rollers

200 and 300 and the belt material 600. Each of the upper rotating roller 200 and the lower rotating roller 300 is independently driven by a servo motor, and a plurality of rollers can move synchronously and can be controlled respectively; alternatively, each of the upper and

lower rollers

200, 300 may be driven and the motive force for moving the strip material 600 may be provided by the tension on the plates. Or each roller of the upper rotating roller 200 (or the lower rotating roller 300) can be respectively driven by a servo motor, and the lower rotating roller 300 (or the upper rotating roller 200) is a driven roller; the roller surface is made of high-temperature resistant materials such as graphite, stainless steel brush rollers, mica and the like, and the allowable working temperature of the roller is not lower than 600 ℃.

In some embodiments of the present invention, the constant tension floating system 400 includes a plurality of second position adjusting devices, the lower rotating rollers 300 are fixed, each upper rotating roller 200 is connected to one second position adjusting device, and the second position adjusting devices can adjust the position of the upper rotating roller 200 in the vertical direction. Similarly, in the present embodiment, the position of the lower rotating roller 300 is fixed, and the tension is adjusted by adjusting the distance of the upper rotating roller 200. In other embodiments, the position of the upper and

lower rollers

200, 300 may be adjusted simultaneously to adjust the tension.

In some embodiments of the present invention, the feeding window 110 and the discharging window 120 are both provided with high pressure hot air injection devices, which can inject high pressure hot air to the passing strip 600.

The furnace 100 has only two removable feed windows 110 and exit windows 120 for the strip 600 to enter and exit. The width dimension of the window is about 10 to 50mm greater than the width of the strip 600 and the height dimension of the window is about 10 to 30mm. The high-pressure hot air injection devices are arranged on the feeding window 110 and the discharging window 120, the high-pressure hot air injection devices inject high-pressure hot air (600 ℃) on the surface of the strip 600, and the strip 600 surface is sealed by the brush-shaped structural material to separate the inside and the outside of the furnace, so that outside cold air can not enter the furnace, and the strip 600 can not be cooled when passing through the thickness of the furnace wall to affect subsequent quenching.

In some embodiments of the utility model, the feeding system includes material loading power roller 731, guide roller group 732, tension roller 733 and haulage rope 734, material loading power roller 731 sets up outside furnace body 100, and be close to the setting of feeding window 110, tension roller 733 sets up outside furnace body 100, and be close to the setting of discharging window 120, haulage rope 734 sets up on material loading power roller 731 and tension roller 733, haulage rope 734 can with the strip 600 fixed connection of transmission, guide roller group 732 includes a plurality of guide rollers of setting in furnace body 100, can lead to haulage rope 734, make haulage rope 734 drive strip 600 around hang between last live-rollers 200 and lower live-rollers 300, and pull out from discharging window 120.

During the feeding of the strip 600, the strip 600 is manually fed from the cold roll 710 through the pinch rollers with the assistance of a human, then the strip 600 is fixed with the pulling rope 734 (which may be a steel wire rope or the like), and then the strip 600 is carried by the pulling rope 734 to sequentially pass around all the upper rotating roller 200 and the lower rotating roller 300, and the strip 600 is manually taken out from the tension roller 733 and wound on the winding machine 720. By adopting the feeding, the strip 600 is hung and wound on the upper rotating roller 200 and the lower rotating roller 300 without entering the furnace body 100 manually, so that the construction efficiency is improved.

In some embodiments of the present invention, the present invention further comprises a traction rope tension adjusting device 750, the traction rope tension adjusting device 750 is connected to the tension roller 733, and can adjust the tension of the traction rope 734. By providing the hauling rope tension adjusting device 750, the hauling rope tension adjusting device 750 can adjust the tension of the hauling rope 734 by adjusting the position of the tension roller 733, so that the hauling rope 734 is in a tightened state.

In some embodiments of the present invention, the quenching apparatus 740 includes an upper water-spraying beam 741 and a lower water-spraying beam 742, the upper water-spraying beam 741 and the lower water-spraying beam 742 are disposed vertically symmetrically to form a strip passing passage, and the opposite surfaces of the upper water-spraying beam 741 and the lower water-spraying beam 742 are provided with the quenching medium nozzles 743.

The quenching device 740 comprises an upper water spray beam 741 and a lower water spray beam 742 which can be arranged up and down symmetrically and can be moved, a quenching medium nozzle 743 with special design is arranged on the upper water spray beam 741 and the lower water spray beam 742, and the quenching medium nozzle 743 can respectively spray quenching media such as water flow, water mist and compressed air with various cooling speeds according to the process requirements.

The length of the quenching device 740 is only 1000-2000 mm, the distance between the roller 200 in the furnace and the clamping roller is usually within 3000mm, and actually, the suspension distance in a hot state is only a small section of a quenching area, so that the plate shape can be well ensured under the control of tension, and for a thin plate with the thickness of 1mm and the width of 1250mm, the width flatness can reach 1mm/1m under the condition of no pulling and straightening after quenching. The longitudinal flatness can reach 2mm/1m.

The strip 600 passes through a channel between an upper spray beam 741 and a lower spray beam 742 at a process speed, quenching is completed, and the cooling intensity of spray cooling is that the water quantity on the two sides is 20-100L/m ² The thickness of the strip is 1-3 mm; the spray cooling intensity is 5-25L/m of water quantity on two sides ² The thickness of the strip is 0.5-1.2 mm; the air quantity of the strong wind cooling is about 2 to 10m ³ /m ² The wind pressure is about 1500-9000 Pa, and the method is suitable for the strip 600 with the thickness less than 0.75 mm. During quenching, the strip 600 is subjected to micro-tension by the cold-rolled coil 710 and the winder 720, and the tensile stress is about 2-5.2 MPa.

The forward movement speed of the strip 600 passing through the quenching apparatus 740 is preferably 5 to 20m/min. The speed is primarily dependent on the length of the strip 600 in the furnace in the heated state. The heating capacity of the furnace body 100 is 2.5-6 min/mm. The quenching transfer time from the furnace body 100 to the quenching device 740 is about 1 to 3S.

In some embodiments of the present invention, the furnace body further comprises a protective gas supply device, the protective gas supply device is connected to the furnace body 100, and the protective gas can be introduced into the furnace body 100.

The furnace body 100 is a relatively sealed furnace body, inert gas can be introduced into the furnace body, micro-positive pressure can be maintained, and the strip 600 is heated in a protective atmosphere; but it is optional if an inert gas blanket is required.

In some embodiments of the utility model, the device further comprises an oxidation treatment device, and the oxidation treatment device is arranged behind the product forming device and is used for carrying out surface oxidation treatment on the formed product.

The 2-series and 7-series aluminum alloys have high strength, but are copper-containing aluminum alloys, and when the aluminum alloys are subjected to anodic oxidation after solution quenching, the second phase of copper is precipitated, so that the color difference is easily formed due to oxidation, and the wear resistance and corrosion resistance of the film are poor. For this reason, there is a need for a technique that can complete oxidation before copper is precipitated.

After the oxidation treatment device is arranged on the stamping equipment, the oxidation is immediately carried out after the stamping is finished, or the oxidation control is finished within 24 hours after the stamping is finished; however, the oxidation step may be performed after the aging step. Therefore, the aluminum alloy can be oxidized before the second phase of the copper is separated out, the color difference caused by oxidation can be reduced, and the surface quality of the plate is improved.

Before oxidation, oxidation pretreatment equipment such as a surface finishing process and the like can be added, and the finishing process can be various polishing processes including abrasive belt polishing, chemical polishing and the like.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sheet covering product line, comprising:

2. The sheet covering product production line of claim 1, wherein: the solution quenching apparatus includes:

the lower roller group comprises a plurality of lower rotating rollers, the lower rotating rollers are horizontally arranged in the furnace body, the lower rotating rollers are arranged in parallel along the direction from the feeding window to the discharging window, the lower rotating rollers are arranged below the upper rotating rollers, and the lower rotating rollers and the upper rotating rollers are arranged in parallel and in a staggered manner;

the constant-tension floating system can adjust the vertical distance between the upper rotating roller and the adjacent lower rotating roller;

and the quenching device is arranged on the moving path of the strip material and is used for quenching the heat-treated strip material.

3. The sheet covering product production line of claim 2, wherein: the solid solution heating system comprises a circulating fan, a guide air duct and a heating device, wherein the guide air duct is connected with the circulating fan, the heating device is arranged in the guide air duct, the guide air duct is provided with a plurality of air outlets, and the guide air duct can blow air to two plate surfaces of a strip wound on the upper rotating roller and the lower rotating roller through the air outlets.

4. The sheet covering product production line of claim 2, wherein: the constant tension floating system comprises a plurality of first position adjusting devices, the position of the upper rotating roller is fixed, each lower rotating roller is connected with one first position adjusting device, and the first position adjusting devices can adjust the positions of the lower rotating rollers in the vertical direction.

5. The sheet covering product production line of claim 2, wherein: the constant tension floating system comprises a plurality of second position adjusting devices, the positions of the lower rotating rollers are fixed, each upper rotating roller is connected with one of the second position adjusting devices, and the second position adjusting devices can adjust the positions of the upper rotating rollers in the vertical direction.

6. The sheet covering product production line of claim 2, wherein: the feeding window and the discharging window are both provided with high-pressure hot air flow injection devices which can inject high-pressure hot air flow to the passing strip.

7. The sheet covering product production line of claim 2, wherein: the feeding system comprises a feeding power roller, a guide roller set, a tension roller and a traction rope, wherein the feeding power roller is arranged outside the furnace body and close to the feeding window, the tension roller is arranged outside the furnace body and close to the discharging window, the traction rope is arranged on the feeding power roller and the tension roller, the traction rope can be fixedly connected with a transmission belt, the guide roller set comprises a plurality of guide rollers arranged in the furnace body and can be right to guide the traction rope, so that the traction rope drives the belt to be wound and hung on the upper rotating roller and between the lower rotating rollers and pulled out from the discharging window.

8. The sheet covering product production line of claim 7, wherein: the tension adjusting device is connected with the tension roller and can adjust the tension of the traction rope.

9. The sheet covering product production line of claim 2, wherein: the quenching device comprises an upper water spray beam and a lower water spray beam, the upper water spray beam and the lower water spray beam are symmetrically arranged up and down to form a strip material passing channel, and quenching medium nozzles are arranged on the opposite surfaces of the upper water spray beam and the lower water spray beam.

10. The sheet covering product production line of claim 1, wherein: the device is characterized by further comprising an oxidation treatment device, wherein the oxidation treatment device is arranged behind the product forming device and used for carrying out surface oxidation treatment on the formed product.