CN112809117A - Brazing process for core seal of seal type radiator - Google Patents
Brazing process for core seal of seal type radiator Download PDFInfo
- Publication number
- CN112809117A CN112809117A CN202110228909.2A CN202110228909A CN112809117A CN 112809117 A CN112809117 A CN 112809117A CN 202110228909 A CN202110228909 A CN 202110228909A CN 112809117 A CN112809117 A CN 112809117A
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- China
- Prior art keywords
- welding
- brazing furnace
- seal
- core
- flat
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
Abstract
The invention belongs to a welding process in the machining industry, and particularly relates to a core seal brazing process of a seal type radiator. A brazing furnace cleaning and spraying drying area, a brazing furnace heating area and a brazing furnace cooling area are sequentially arranged on the core body brazing furnace from left to right, assembling the core body on a workbench of a core body assembling machine, arranging flat pipes and fins of the core body in a staggered mode in sequence, symmetrically forming circular welding wire grooves with the length communicated with the sealing strip on two parallel side faces of the sealing strip, the two sides of the circular welding wire groove, which are contacted with the flat tube, are respectively provided with an inclined surface, which is convenient for the insertion of welding wires, when the welding wires are inserted into the seal and have the same length with the seal, the welding wires are cut off, the seal and the flat tube are welded by a heating zone of a brazing furnace, meanwhile, the flat tube and the fin are welded together through the solder, the temperature set in the heating area of the brazing furnace is higher than the melting point of the solder, the welding wires in the flat tubes and the sealing strips can be fully and firmly welded, the whole assembly welding process completely achieves automatic control, the radiator core body ensures good quality, and the production efficiency is high.
Description
Technical Field
The invention belongs to a welding process in the machining industry, and particularly relates to a core seal brazing process of a seal type radiator.
Background
The seal type radiator core is an important part for heat exchange on equipment such as an air compressor, a heavy vehicle, a large outdoor generator and the like, and heat is exchanged with outside air through the flat tubes and the fins by circulating cooling water, oil or a refrigerant in the core. The radiator core body comprises flat pipes, sealing strips, fins and the like, cooling water, oil or refrigerant have higher pressure when flowing in the exchanger, and the requirement on the sealing performance of the circulating system is very high. In addition, the length of a single-section fin of a radiator of large equipment reaches more than 1 meter, the equipment can vibrate during operation, in order to improve the sealing performance of the equipment and avoid the falling of a seal or a fin in the operation process of the equipment, the fins are sealed by the seal at two ends of the fin, and the seal and the flat pipe and the fin and the flat pipe are welded.
In the seal welding process of the core seal of the seal radiator, because the welding material on the flat pipe is thin, the strength of the seal and the flat pipe which are directly welded together is not enough. In the prior art, a soldering lug with the thickness of 0.1mm-0.15mm is added between a seal and a flat tube in a manual mode on a core assembly machine and then is conveyed to a brazing furnace for welding. The assembly welding mode has the problems of low production efficiency, poor welding quality, high cost and the like.
Disclosure of Invention
The invention aims to overcome the technical defects and provide the sealing strip brazing process of the sealing strip type radiator core body, which has the advantages of high automation degree, good welding quality and high production efficiency.
The technical scheme adopted by the invention for solving the technical problem is as follows: the brazing process of the seal of the core body of the seal type radiator comprises the following equipment: the core assembling machine workbench, a netted conveyer belt, a brazing furnace cleaning and spraying drying area, a brazing furnace heating area, a brazing furnace cooling area, a conveyer belt driving wheel and a conveyer belt driven wheel are sequentially arranged on a core brazing furnace from left to right, the core assembling machine workbench is assembled on the core assembling machine workbench through the netted conveyer belt above the brazing furnace workbench in the three sections, flat pipes and fins of the core are sequentially staggered and arranged orderly, then seals are placed on two sides of the fins in the flat pipes, two parallel sides of the seals are contacted with two sides of the flat pipes, tips of the E-shaped seals are tightly pressed on two sides of the fins in the flat pipes, circular welding wire grooves with the length communicated with the seals are symmetrically formed on the two parallel sides of the seals, and two sides of the circular welding wire grooves, which are contacted with the flat pipes, are respectively provided with an inclined plane, the included angle between the inclined plane and the flat tube side plane is alpha, alpha is 0.5-1 degree, the thickness of a welding layer after welding is ensured to be 0.04-0.08 mm, on a full-automatic core assembly machine, a welding wire is inserted into a circular welding wire groove of all seals under the control of a programmable controller, the diameter of the circular welding wire groove is 1.1 times of the diameter of the welding wire, the welding wire is convenient to insert, when the welding wire is inserted into the seals and is equal to the seals, the welding wire is cut off, the outer surface of the flat tube is coated with the welding flux, then the radiator core body which is bound by the bundled steel wires is integrally conveyed from the core assembly machine to a mesh conveying belt of a welding furnace through a connecting plate, a programmable controller sends out an instruction, the power is electrified, nitrogen protective gas is filled in three areas, the core body is firstly cleaned through the welding furnace and sprayed with a drying area, the temperature is 210 degrees, the core body passes through the furnace heating area, the welding furnace is, the temperature set in the heating area of the brazing furnace is higher than the melting point of the solder and lower than the melting point of 17 ℃ of aluminum-manganese alloy materials of the flat tubes and the fins, the temperature of the heating area of the brazing furnace is 612 ℃, the temperature is controlled to be +/-3 ℃, the heating time is 13 seconds, the thickness of a brazed welding layer is 0.04-0.08 mm, the heat is preserved under the condition that the temperature of the heating area of the brazing furnace is controlled, then the chips are conveyed to a cooling area of the brazing furnace, the temperature of circulating cooling water is 4 ℃, and the time of water cooling and.
The invention has the beneficial effects that: the brazing process of the seal strip of the core body of the seal strip type radiator can ensure that the flat tubes and the welding wires in the seal strip are fully and firmly welded, the whole assembling and welding process completely achieves automatic control, the core body of the radiator ensures good quality, and the production efficiency is high. And nitrogen filling protection is adopted, so that the surface oxidation of flat pipes, sealing strips and fins is reduced, and the service life of the radiator core is prolonged. The core body filled with the welding rods is directly conveyed to a conveying belt of the welding furnace from the core body assembly machine, so that the conveying time is saved.
Drawings
The following description is made in detail by way of example with reference to the accompanying drawings.
FIG. 1 is a diagram of core and seal attachment during a seal-type heat sink core seal brazing process.
Fig. 2 is an enlarged view at i of fig. 1.
Fig. 3 is a front view of the seal of fig. 1.
Fig. 4 is a top view of fig. 3.
FIG. 5 is a flow chart of an apparatus for a core seal brazing process for a sealed heat sink.
FIG. 6 is a flowchart of a seal brazing process for a core seal of a sealed heat sink.
In the drawings, 1-seal; 1-1-circular wire groove; 2-flat tube; 3-welding wires; 4-a fin; 5-binding steel wires; 6-driving wheel of conveyer belt; 7-mesh conveyer belt; 8-a brazing furnace worktable; 9-brazing furnace cooling zone; 10-a brazing furnace heating zone; 11-a brazing furnace cleaning and spray drying area; 12-a core; 13-a belt driven wheel; 14-a connecting plate; 15-core assembler worktable; the 16-core body assembling machine workbench drives the driving wheel.
Detailed Description
In the embodiment, referring to fig. 1 to 5, the brazing process of the core seal of the seal type radiator comprises the following steps: firstly, assembling a core 12 on a full-automatic core assembling machine, placing welding rods, inserting welding wires 3 into circular welding wire grooves 1-1 of all seals 1 under the control of a programmable controller on the full-automatic core assembling machine, wherein the diameter of each circular welding wire groove 1-1 is 1.1 times of the diameter of the welding wire, so that the welding wires 3 can be conveniently inserted into the circular welding wire grooves 1-1, and when the welding wires 3 are inserted into the seals 1 and cut off the welding wires 3 at the same time with the seals. A brazing furnace cleaning and spraying drying area 11, a brazing furnace heating area 10 and a brazing furnace cooling area 9 are sequentially arranged on a brazing furnace workbench 8 from left to right, a mesh-shaped conveying belt 7 is arranged above the brazing furnace workbench in the three intervals and is in transmission connection with a driving wheel 6 and a driven wheel 13, a core body 12 is arranged above the mesh-shaped conveying belt 7, flat pipes 2 and fins 4 of the core body 12 are sequentially arranged in a staggered mode, after the mesh-shaped conveying belt is arranged in order, sealing strips 1 are arranged on two side faces of the fins 4, two parallel side faces of the sealing strips 1 are in contact with two inner side faces of the flat pipes 2, the tips of the E-shaped sealing strips 1 tightly press two sides of the fins 4 in the flat pipes 2, and circular welding wire grooves 1-1 with the same length as the sealing strips 1 are symmetrically formed in the two parallel side faces. Two sides of the circular welding wire groove 1-1, which are in contact with the flat tube 2, are symmetrically provided with an inclined plane, and the included angle alpha between the inclined plane and the inner side surface of the flat tube 2 is 0.5-1 degrees, so that the flat tube and the seal strip can be filled with welding wires after the welding wires are melted. The inner side surface of the flat pipe 2 is coated with the solder, the solder is selected from aluminum-manganese alloy materials with the melting point being 10-20 degrees lower than that of the flat pipe 2, the fins 4 and the seal 1, and the welding strength of the seal 1 and the flat pipe 2 is improved. The radiator core 12 is integrally bound by the binding steel wire 5, and through the chip assembly workbench 15, a driving wheel 16 is driven to a connecting plate 14 on the worktable of the core body assembling machine and is conveyed to a reticular conveyer belt 7 of the welding furnace, the reticular conveyer belt 7 is driven and connected by a driving wheel 6 and a driven wheel 13, the core body 12 is sent into a cleaning and drying area 11 of a brazing furnace through a mesh conveyer belt 7, the core body 12 is cleaned and dried and then enters a heating area 10 of the brazing furnace for welding, the temperature of the heating area 10 of the brazing furnace is controlled to be 17 ℃ higher than the melting point of the solder and lower than the melting point of the aluminum-manganese alloy material, welding under program control, wherein the heating time is 13 seconds, the heating temperature is 612 ℃, the temperature is controlled to be +/-3 ℃, the thickness of a welding layer is ensured to be 0.04-0.08 mm, heat preservation is carried out after welding is finished, under the protection of nitrogen, the core body 12 can not be oxidized and rusted, the welding quality of the core body 12 is ensured, and the welded core body 12 is conveyed to a brazing furnace cooling area 9 through a net-shaped conveying belt 7 to be cooled for 25 seconds. Referring to fig. 6, the flow of the seal brazing process program control of the core seal of the seal type heat radiator is as follows: adopt PLC control module to connect through the control power that the scram signal is effective, the effective Y of scram signal is to connecting emergency shutdown, N leads to nitrogen gas to connecting frequency conversion speed regulator and stove, frequency conversion speed regulator connects servo motor, carry out brazing furnace heater heating accuse temperature behind the logical nitrogen gas in the stove, carry out core 12 and braze in the stove, servo motor connects and starts action wheel 6, action wheel 6 rotates and drives netted conveyer belt 7 operation, transport brazing furnace zone of heating 10 with core 12 through netted conveyer belt 7, make core 12 weld in the stove, core 12 after the brazing sends to brazing furnace cooling zone 9 through netted conveyer belt 7 and cools off, accomplish whole core 12 welding process.
The working principle of the invention is as follows: the brazing process of the sealing strip type radiator core sealing strip is characterized in that welding wires 3 are inserted into circular welding wire grooves 1-1 formed in two parallel side faces of the sealing strip 1, the sealing strip 1 and a flat pipe 2 are welded through welding fluxes, and meanwhile, fins 4 and the flat pipe 2 are welded and fixed, so that the sealing strip 1 and the flat pipe 2 are tightly and firmly combined, the sealing effect is good, the adopted equipment is completely automated through programmable control, and the production efficiency is high.
Claims (1)
1. A core seal brazing process of a seal type radiator comprises the following equipment: the core assembly machine comprises a core assembly machine workbench (15), a mesh-shaped conveying belt (7), a brazing furnace cleaning and spraying drying area (11), a brazing furnace heating area (10), a brazing furnace cooling area (9), a conveying belt driving wheel (6) and a conveying belt driven wheel (13), and is characterized in that the brazing furnace cleaning and spraying drying area (11), the brazing furnace heating area (10) and the brazing furnace cooling area (9) are sequentially arranged on a core brazing furnace from left to right, a core (12) is assembled on the core assembly machine workbench (15) through the mesh-shaped conveying belt (7) above a brazing furnace workbench (8) in the three sections, flat pipes and fins of the core (12) are sequentially staggered, after the flat pipes and the fins are orderly arranged, the seal (1) is placed on two sides of the fins in the flat pipes (2), two parallel side surfaces of the seal (1) are contacted with two side surfaces of the flat pipes (2), and the tips of the seal (1) in a shape of a Chinese character 'shan's shape tightly, circular welding wire grooves (1-1) which are communicated with the sealing strips in length are symmetrically formed in two parallel side faces of each sealing strip (1), two sides, in contact with the flat tubes (2), of each circular welding wire groove (1-1) are respectively provided with an inclined face, the included angle between each inclined face and the side plane of each flat tube (2) is alpha, alpha is 0.5-1 degrees, the thickness of a welding layer after welding is guaranteed to be 0.04-0.08 mm, on a full-automatic core assembling machine, the welding wires (3) are inserted into the circular welding wire grooves (1-1) of all the sealing strips (1) under the control of a programmable controller, the diameter of each circular welding wire groove (1-1) is 1.1 times that of the welding wire (3), the welding wires (3) can be conveniently inserted, when the welding wires (3) are inserted into the sealing strips (1) and are as long as the welding wires (1), the welding wires (3) are cut off, the welding materials are coated on the outer surfaces of the flat tubes (2), and then the radiator cores (12) bound by the bundled steel wires (5) are integrally conveyed On a netted conveyer belt (7) connected with a furnace, a programmable controller sends an instruction, a power supply is electrified, nitrogen protective gas is filled in three areas, a core body (12) firstly passes through a brazing furnace cleaning and spraying drying area (11), the temperature is 210 ℃, the core body passes through a brazing furnace heating area (10), the brazing furnace heating area (10) is used for welding a seal (1) and a flat pipe (2), meanwhile, the flat pipe (2) and a fin (4) are also welded together through welding flux, the temperature set in the brazing furnace heating area (10) is higher than the melting point of the welding flux and lower than the melting point of aluminum-manganese alloy materials of the flat pipe (2) and the fin (4) by 17 ℃, the temperature of the brazing furnace heating area (10) is 612 ℃, the temperature is controlled to +/-3 ℃, the heating time is 13 seconds, the thickness of a brazed welding layer is 0.04-0.08 mm, the heat is preserved under the condition that the temperature is controlled in the brazing furnace heating area (10), and then the chip, the temperature of the circulating cooling water is 4 ℃, and the time of water cooling and air cooling is 25 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110228909.2A CN112809117A (en) | 2021-03-02 | 2021-03-02 | Brazing process for core seal of seal type radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110228909.2A CN112809117A (en) | 2021-03-02 | 2021-03-02 | Brazing process for core seal of seal type radiator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112809117A true CN112809117A (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110228909.2A Pending CN112809117A (en) | 2021-03-02 | 2021-03-02 | Brazing process for core seal of seal type radiator |
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| Country | Link |
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| CN (1) | CN112809117A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116921791A (en) * | 2023-09-15 | 2023-10-24 | 淄博市特种设备检验研究院 | Brazing forming treatment system for steel plate type radiator |
| CN117506053B (en) * | 2023-11-13 | 2024-04-19 | 浙江兰通空调设备有限公司 | Assembly processing device of evaporator for new energy automobile |
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| CN111761156A (en) * | 2020-07-22 | 2020-10-13 | 厦门福鑫特工贸有限公司 | Brazing method for large computer radiator |
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| CN117506053B (en) * | 2023-11-13 | 2024-04-19 | 浙江兰通空调设备有限公司 | Assembly processing device of evaporator for new energy automobile |
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Application publication date: 20210518 |