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CN-224212714-U - Heat treatment furnace for producing micro-channel aluminum flat tube

CN224212714UCN 224212714 UCN224212714 UCN 224212714UCN-224212714-U

Abstract

The utility model relates to the technical field of micro-channel aluminum flat tube production, and discloses a heat treatment furnace for micro-channel aluminum flat tube production, which comprises a support, an annealing furnace main body fixed at the top of the support and a motor, wherein the output end of the motor is in transmission connection with a feeding part, the inner side of the feeding part is in transmission connection with a cleaning assembly, the feeding part is assembled to drive aluminum flat tube blank to move by utilizing the power of the motor, the cleaning assembly is arranged on a heat treatment line to chemically clean the surface of the aluminum flat tube blank, the cleaning assembly drives cleaning cloth to move along the direction opposite to the movement of the aluminum flat tube blank by utilizing the power of the motor to wipe the surface of the aluminum flat tube blank, meanwhile, compounds generated by chemical cleaning by utilizing a cleaning agent are piled up, and a spray head for flushing impurities on the surface of the aluminum flat tube blank is matched to clean the compounds from the surface of the aluminum flat tube blank.

Inventors

  • WANG LI
  • WANG YIXIAO
  • Tan Lunxuan

Assignees

  • 江苏共昌新材料科技有限公司

Dates

Publication Date
20260508
Application Date
20250529

Claims (7)

  1. 1. A heat treatment furnace for producing micro-channel aluminum flat tubes comprises a bracket (1), an annealing furnace main body (4) and a motor (8), wherein the annealing furnace main body is fixed at the top of the bracket (1), and the heat treatment furnace is characterized in that the output end of the motor (8) is in transmission connection with a feeding piece (2), and the inner side of the feeding piece (2) is in transmission connection with a cleaning assembly (6); the feeding piece (2) is assembled to drive the aluminum flat tube blank (7) to move by utilizing the power of the motor (8); The cleaning component (6) is arranged on the heat treatment line to chemically clean the surface of the aluminum flat tube blank (7), the cleaning cloth (64) is driven by the power of the motor (8) to move along the direction opposite to the movement direction of the aluminum flat tube blank (7) to wipe the surface of the aluminum flat tube blank (7), meanwhile, the chemical compound generated by the chemical cleaning by the cleaning agent is accumulated, and the chemical compound is removed from the surface of the aluminum flat tube blank (7) by matching with the spray head (67) for flushing impurities on the surface of the aluminum flat tube blank (7).
  2. 2. The heat treatment furnace for producing the micro-channel aluminum flat tube according to claim 1, wherein the motor (8) is fixed on the inner side of the support (1), the heat dissipating device (5) is fixed on the top of one end of the support (1), the preheating device (3) is fixed on the top of the support (1), the annealing furnace main body (4) is positioned on one side, close to the preheating device (3) and the heat dissipating device (5), of the heat treatment furnace main body (4), and the preheating device (3) are communicated with the inner side of the heat dissipating device (5).
  3. 3. The heat treatment furnace for producing micro-channel aluminum flat tubes according to claim 2, wherein the feeding part (2) comprises two support plates (22), the two support plates (22) are fixed on the inner sides of the supports (1), a plurality of groups of driving rollers (23) are rotatably connected on the inner sides of the two supports (1), the two driving rollers (23) are in a group, and the aluminum flat tube blank (7) is positioned on one side close to each group of driving rollers (23).
  4. 4. A heat treatment furnace for producing micro-channel aluminum flat tubes according to claim 3 is characterized in that one end of each driving roller (23) is fixedly provided with a large gear (25), two large gears (25) fixedly connected with the same group of driving rollers (23) are meshed, and each two groups of driving rollers (23) are in driving connection through a driving piece (24).
  5. 5. The heat treatment furnace for producing micro-channel aluminum flat tube according to claim 4, wherein the cleaning assembly (6) comprises two pinions (61) and two driving shafts (62), the two driving shafts (62) are rotatably connected to the inner sides of the two support plates (22), the two pinions (61) are fixedly connected to one ends of the two driving shafts (62) close to the large gears (25) respectively, the pinion (61) positioned at the top of the aluminum flat tube blank (7) is meshed with the large gears (25) positioned at the top of the aluminum flat tube blank (7), and the two pinions (61) are meshed.
  6. 6. The heat treatment furnace for producing micro-channel aluminum flat tubes according to claim 5, wherein the cleaning assembly (6) further comprises two cleaning cloths (64), the inner sides of the two support plates (22) are rotatably connected with two driven shafts (63), and the two cleaning cloths (64) are respectively sleeved on the outer sides of the driving shaft (62) and the driven shafts (63) which are positioned on the same plane.
  7. 7. The heat treatment furnace for producing micro-channel aluminum flat tubes according to claim 6, wherein the cleaning assembly (6) further comprises a water pipe (65) and a cleaning pipe (66), the water pipe (65) is fixedly connected to the inner sides of the two support plates (22), the spray head (67) is fixedly connected to the bottom of the water pipe (65), the cleaning pipe (66) is fixedly connected to the inner sides of the two support plates (22), the atomizing nozzle (68) is fixedly connected to one side of the cleaning pipe (66), and the spraying direction of the atomizing nozzle (68) forms an included angle of forty-five degrees with the surface of the aluminum flat tube blank (7).

Description

Heat treatment furnace for producing micro-channel aluminum flat tube Technical Field The utility model relates to the technical field of micro-channel aluminum flat tube production, in particular to a heat treatment furnace for micro-channel aluminum flat tube production. Background The heat treatment furnace for producing the micro-channel aluminum flat tube is core process equipment, and the heat treatment furnace plays a role in penetrating through key links such as material performance optimization, processing defect control, follow-up treatment adaptation and the like. Firstly, through annealing or solution treatment with accurate temperature control (480-550 ℃), residual stress generated in the hot extrusion process of the aluminum flat tube is eliminated, subsequent processing deformation is prevented, and meanwhile, the grain structure is refined to improve the ductility and mechanical properties of the material (for example, the hardness of 6061-T6 alloy can reach more than HB 95). Secondly, the heat treatment furnace integrates an inert gas (nitrogen/argon) protection system, avoids high-temperature oxidation of aluminum materials, inhibits the precipitation of a coarse second phase of supersaturated solid solution through a rapid cooling process (more than or equal to 100 ℃ per minute), and ensures the dimensional stability (tolerance less than or equal to +/-0.03 mm) of a micro-channel thin-wall structure (the wall thickness is less than or equal to 0.13 mm). In addition, the heat treatment furnace is used as a surface treatment preamble procedure, and the surface of the aluminum pipe is activated through pre-cleaning and temperature homogenization treatment (preheating at 300-400 ℃), so that a high-adhesion substrate is provided for the zinc spraying anticorrosive coating, and the requirements of salt spray corrosion resistance (such as 3A12 alloy) and bursting pressure (> 30 MPa) are met. Modern equipment adopts continuous roller hearth furnace design, realizes full-flow automatic production by the linkage of a PLC system with an extruder and zinc spraying equipment, improves efficiency (annual capacity can reach 3 ten thousand tons) while eliminating manual intervention risks, and reduces energy consumption by more than 30% by integrating electromagnetic induction heating and waste gas recovery technologies. The existing heat treatment furnace for producing the micro-channel aluminum flat tube has obvious limitation in the aspect of surface impurity treatment. Because the aluminum flat tube adopts a continuous extrusion-heat treatment integrated production process, currently, main stream equipment is not generally integrated with an online cleaning component, so that the problems of surface grease, oxide and extrusion lubricant residues are difficult to effectively solve, firstly, the pretreatment link depends on offline chemical cleaning, the production line is required to be interrupted for manually transporting materials, compatibility contradiction exists between the pretreatment link and an automatic production mode of a continuous annealing furnace, operators need to contact high Wen Lvguan (300-500 ℃) and corrosive cleaning agents (such as phosphoric acid-nitric acid mixed solution) during manual online cleaning, scalding and chemical burn risks exist, secondly, the offline cleaning leads to about 15% -20% loss of productivity, the secondary charging is easy to cause scratches or deformation of the surface of the aluminum tube (thin-wall tube with the wall thickness less than or equal to 0.13mm is particularly obvious), furthermore, the residual lubricant volatilizes at high temperature in the heat treatment furnace, VOCs emission can be generated, and waste liquid (containing heavy metal ions) generated by offline cleaning needs to be additionally treated. Disclosure of utility model The utility model aims to provide a heat treatment furnace for producing micro-channel aluminum flat tubes, which can effectively solve the technical problems that surface grease, oxides and extrusion lubricant residues are difficult to clean on line. The heat treatment furnace for the micro-channel aluminum flat tube production comprises a support, an annealing furnace main body fixed at the top of the support and a motor, wherein an output end of the motor is in transmission connection with a feeding part, the inner side of the feeding part is in transmission connection with a cleaning assembly, the feeding part is assembled to drive aluminum flat tube blank to move by utilizing the power of the motor, the cleaning assembly is arranged on a heat treatment line to chemically clean the surface of the aluminum flat tube blank, and cleans the surface of the aluminum flat tube blank by driving a cleaning cloth to move along the direction opposite to the movement of the aluminum flat tube blank by utilizing the power of the motor, meanwhile, compounds generated by chemical cleaning by utilizing a cleaning ag