CN110732564A - aluminum profile online cooling device, aluminum profile and cooling process - Google Patents

Abstract

The invention discloses an on-line cooling device for aluminum profiles, an aluminum profile and a cooling process, comprising a first fan group, a second fan group and a third fan group sequentially arranged along the outlet direction of an extruder; the first fan group includes a first fan group The upper fan and the first lower fan, the air nozzles of the first upper fan and the first lower fan are opposite up and down, and the air nozzle is perpendicular to the movement direction of the aluminum profile. The power of the first upper fan and the first lower fan is the same and runs synchronously. This technical solution is suitable for aluminum profiles with the same wall thickness on the upper and lower surfaces. The air nozzles of the first upper fan and the first down fan are opposite up and down, and the air nozzles are perpendicular to the movement direction of the aluminum profile, which ensures that the air volume of the aluminum profile is the same during the cooling process. All parts of the upper and lower surfaces are evenly exposed to the wind, and the cooling speed is consistent, so that the metallographic structure undergoes the same change and avoids distortion caused by asynchronous cooling.

Description

On-line cooling device for aluminum profile, aluminum profile and cooling process

technical field

The invention belongs to the field of aluminum profile production and processing equipment, in particular to a cooling and shaping device after extrusion molding of an aluminum profile, and in particular to an on-line cooling device for an aluminum profile, an aluminum profile produced by using the on-line cooling device, and cooling of the aluminum profile craft.

Background technique

Aluminum profiles are basic materials widely used in civil and military industries. At present, in the production of aluminum profiles, the molds are first designed and manufactured according to the cross-section of the profile products, and then the heated round cast aluminum rods are extruded into a long strip-shaped profile structure on a fixed molding die by an aluminum profile extrusion machine. When the aluminum profile is extruded from the outlet of the aluminum rod extruder, the general aluminum profile has a thin wall thickness and a slow extrusion speed. Usually, it can be cooled after natural placement without affecting the subsequent processes; while some thicker ones The natural cooling of aluminum profiles is slow, resulting in high temperature and insufficient hardness of the profiles, which affects the subsequent processes, thereby affecting the production efficiency and output of the entire aluminum profile. In order to achieve rapid cooling of aluminum profiles, various air-cooled quenching devices are disclosed in the prior art. For example, in a more common air-cooled quenching device, a plurality of fans are fixedly installed along the extrusion direction of the workpiece, and blow air to the workpiece directly or through the air duct tuyere, so that the extruded workpiece is cooled. For another example, in another air-cooled quenching device, the fan blows air to the workpiece through rigid air ducts, flexible air ducts, air doors, air boxes and air vents, so that the extruded workpiece is cooled. However, the heat treatment effect of the aluminum profile obtained by the existing disclosed air-cooled quenching device cannot fully satisfy the market demand.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide an on-line cooling device for aluminum profiles, an aluminum profile and a cooling process, which are connected to the outlet of the aluminum profile extrusion machine, have a simple structure and compact layout, and can quickly realize the cooling and cooling of the aluminum profiles. In the process of cooling and cooling, the aluminum profile is given higher heat treatment performance.

To achieve the above object, the present invention adopts the following technical solutions:

An on-line cooling device for aluminum profiles, including a feeding roller frame, is characterized in that it also includes a first fan group, a second fan group and a third fan group arranged in sequence along the outlet direction of the extruder; the first fan group includes a first fan group. An upper fan and a first lower fan, the air nozzles of the first upper fan and the first lower fan are opposite up and down and the air nozzle is perpendicular to the movement direction of the aluminum profile, the power of the first upper fan and the first lower fan are the same and run synchronously. This technical solution is suitable for aluminum profiles with the same wall thickness on the upper and lower surfaces. The air nozzles of the first upper fan and the first down fan are opposite up and down, and the air nozzles are perpendicular to the movement direction of the aluminum profile, which ensures that the air volume of the aluminum profile is the same during the cooling process. All parts of the upper and lower surfaces are evenly exposed to the wind, and the cooling speed is consistent, so that the metallographic structure undergoes the same change and avoids distortion caused by asynchronous cooling.

Further, the second fan group includes a bellows and a first fan, the box of the bellows is communicated inside, the first fan is installed on one side of the bellows, and the air outlet of the first fan is communicated with the inside of the box; A plurality of air guide nozzles are arranged on one side, the air guide nozzles are funnel-shaped, and the outlets of the plurality of air guide nozzles are inclined at a certain angle along the movement direction of the aluminum profile.

Further, one set of the second fan group is provided on the upper and lower surfaces of the aluminum profiles, and two sets of the second fan group are jointly set with a first fan or each have a first fan with the same power, and use each of them. When setting a first fan with the same power, the power is the same and runs synchronously.

Further, the third fan group includes a fan fixing frame and a plurality of second fans arranged in parallel on the fan fixing frame; the third fan group is arranged above or below the feeding roller frame.

Further, the vertical distance between the third fan unit and the aluminum profile is greater than the vertical distance between the second fan unit and the aluminum profile.

An aluminum profile, which is characterized in that the aluminum profile includes an upper surface and a lower surface, the upper surface and the lower surface have the same thickness, and the upper surface and the lower surface are cooled by the above-mentioned online cooling device for the aluminum profile; After the aluminum profile is cooled by the online cooling device, the tensile strength is greater than or equal to 310MPa, the yield strength is greater than or equal to 295MPa, and the Young's modulus of elasticity is greater than or equal to 10Pa.

A cooling process of an aluminum profile online cooling device, which is characterized by using the above-mentioned aluminum profile online cooling device for cooling, the aluminum profile includes an upper surface and a lower surface, the thickness of the upper surface and the lower surface are the same, and the aluminum profile is passed through. The temperature of the upper and lower surfaces of the aluminum profile dropped by 200°C within 1 minute after the first fan unit started timing.

Further, the distance that the surface temperature of the aluminum profile is lowered by 200° C. is 9 meters.

Further, the fan power selected by the first fan group is 2.5kW, and the fan is turned on at full power.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. The temperature at the outlet of the aluminum extrusion machine is between 450-570 °C. The air is evenly supplied through the tuyere perpendicular to the aluminum profile, and the air volume is concentrated, so that the surface temperature of the aluminum profile is reduced faster. The surface cooling rate is the same, and the aluminum profile is constantly moving, so that the cooling operation is continuously performed on the aluminum profile, ensuring the consistency of mechanical properties in the length range. Avoid distortion caused by inconsistent cooling and expansion rates of the front and rear surfaces;

2. The second fan group adopts the bellows to separate the wind generated by the same fan, which not only ensures the uniformity of the air volume within the range covered by the bellows, but also reduces the power consumption. cooling area.

3. Control the operation and cooling speed of the aluminum profile, and under the process control conditions, the aluminum profile with higher mechanical properties can be obtained.

Description of drawings

In order to more clearly illustrate the specific embodiments of the invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings required in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

Figure 1 is a schematic structural diagram of the present invention.

In the figure: 1-feeding roller frame 2-first upper fan 3-first lower fan 4-air nozzle 5-air box 6-first fan 7-air guide nozzle 8-fan fixing frame 9-second fan.

Detailed ways

The technical solutions of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the invention.

As shown in Figure 1, an on-line cooling device for aluminum profiles includes a feeding roller frame 1, which is characterized in that it also includes a first fan unit, a first fan unit and a third fan unit arranged in sequence along the outlet direction of the extruder; A fan group includes a first upper fan 2 and a first lower fan 3. The air nozzles 4 of the first upper fan 2 and the first lower fan 3 are vertically opposite and the air nozzle 4 is perpendicular to the movement direction of the aluminum profile. The first upper fan 2 and The power of the first down fans 3 is the same and runs synchronously. This technical solution is suitable for aluminum profiles with the same wall thickness on the upper and lower surfaces. The air nozzles 4 of the first upper fan 2 and the first lower fan 3 are opposite to each other up and down, and the air nozzle 4 is perpendicular to the movement direction of the aluminum profile, which ensures that the aluminum profile is cooled during the cooling process. The air volume is the same, and each part of the upper and lower surfaces is evenly exposed to the wind, and the cooling speed is consistent, so that the metallographic structure can be changed in the same way, and the distortion caused by the asynchronous cooling is avoided.

The first fan group includes a bellows 5 and a first fan 6. The box body of the bellows 5 is communicated inside, the first fan 6 is installed on one side of the bellows 5, and the air outlet of the first fan 6 is communicated with the inside of the box; A number of air guide nozzles 7 are arranged on the side, the air guide nozzle 7 is funnel-shaped, and the outlets of the several air guide nozzles 7 are inclined at a certain angle along the movement direction of the aluminum profile.

The first fan group is provided with one set on the upper and lower surfaces of the aluminum profiles. The two sets of first fan groups are jointly set with a first fan 6 or each with a first fan 6 with the same power. The same first fan 6 has the same power and operates synchronously.

The third fan group includes a fan fixing frame 8 and several second fans 9 arranged on the fan fixing frame 8 in parallel; the third fan group is arranged above or below the feeding roller frame 1 . The vertical distance between the third fan unit and the aluminum profile is greater than the vertical distance between the first fan unit and the aluminum profile.

In the specific implementation, the aluminum profile includes an upper surface and a lower surface, the thickness of the upper surface and the lower surface are the same, and the upper surface and the lower surface are cooled by the above-mentioned online cooling device for the aluminum profile; after the aluminum profile is cooled by the online cooling device for the aluminum profile, Tensile strength ≥310MPa, yield strength ≥295MPa, Young's modulus of elasticity ≥10Pa.

The cooling process using the above-mentioned on-line cooling device for aluminum profiles includes that the temperature of the upper and lower surfaces of the aluminum profiles drops by 200° C. within 1 minute when the aluminum profiles pass through the first fan unit. When the surface temperature of the aluminum profile drops by 200°C, the running distance is 9 meters. The fan power selected by the first fan group is 2.5kW, and the fan is turned on at full power.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An aluminum profile on-line cooling device, comprising a feeding roller frame, is characterized in that: also comprising the first fan group, the second fan group and the third fan group arranged in sequence along the outlet direction of the extruder; The unit includes a first upper fan and a first lower fan. The air nozzles of the first upper fan and the first lower fan are vertically opposite and the air nozzle is perpendicular to the movement direction of the aluminum profile. The power is the same and operates synchronously. 2 . The on-line cooling device for aluminum profiles according to claim 1 , wherein the second fan group comprises a bellows and a first fan, the casings of the bellows are communicated inside, and the first fan is installed on one side of the casing. 3 . The air outlet of the first fan is communicated with the inside of the box body; the other side of the box body is provided with several air guide nozzles, the air guide nozzles are funnel-shaped, and the outlets of the several air guide nozzles are inclined to a certain degree along the movement direction of the aluminum profile. angle. 3. An aluminum profile on-line cooling device according to claim 1 or 2, characterized in that: one set of the second fan unit is provided on the upper and lower surfaces of the aluminum profile, and two sets of the second fan unit are jointly provided with one set. A first fan or a first fan with the same power is respectively set, and the power is the same and runs synchronously when a first fan with the same power is set. 4 . The on-line cooling device for aluminum profiles according to claim 3 , wherein the third fan group comprises a fan fixing frame and a plurality of second fans arranged in parallel on the fan fixing frame; The unit is set above or below the feeding roller frame. 5 . The on-line cooling device for aluminum profiles according to claim 4 , wherein the vertical distance between the third fan unit and the aluminum profile is greater than the vertical distance between the second fan unit and the aluminum profile. 6 . 6. An aluminum profile, characterized in that: the aluminum profile includes an upper surface and a lower surface, the upper surface and the lower surface have the same thickness, and the upper surface and the lower surface use the aluminum profile described in any one of claims 1 to 5. The online cooling device is used for cooling; after the aluminum profile is cooled by the aluminum profile online cooling device, the tensile strength is greater than or equal to 310MPa, the yield strength is greater than or equal to 295MPa, and the Young's modulus of elasticity is greater than or equal to 10Pa. 7. A cooling process for an aluminum profile online cooling device, characterized in that: the aluminum profile online cooling device according to any one of claims 1 to 5 is used for cooling, and the aluminum profile passes through the first fan group to start timing within 1 minute. The surface temperature of the profile drops by 200°C. 8 . The cooling process of an aluminum profile online cooling device according to claim 7 , wherein the aluminum profile includes an upper surface and a lower surface, and the thickness of the upper surface and the lower surface is the same, and the aluminum profile is used for online cooling. 9 . The device cools the upper and lower surfaces. 9 . The cooling process of an on-line cooling device for aluminum profiles according to claim 7 or 8 , wherein the running distance for the surface temperature of the aluminum profiles to drop by 200° C. is 9 meters. 10 . 10 . The cooling process of an aluminum profile on-line cooling device according to claim 9 , wherein the fan power selected by the first fan group is 2.5kW, and the fan is turned on at full power. 11 .

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