CN111843093A - Chain belt type atmosphere brazing furnace for producing and processing soft magnetic materials - Google Patents
Chain belt type atmosphere brazing furnace for producing and processing soft magnetic materials Download PDFInfo
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- CN111843093A CN111843093A CN202010499507.1A CN202010499507A CN111843093A CN 111843093 A CN111843093 A CN 111843093A CN 202010499507 A CN202010499507 A CN 202010499507A CN 111843093 A CN111843093 A CN 111843093A
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- 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
- B23K3/04—Heating appliances
- B23K3/047—Heating appliances electric
- B23K3/053—Heating appliances electric using resistance wires
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- 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
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- 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
- B23K3/04—Heating appliances
- B23K3/047—Heating appliances electric
- B23K3/0478—Heating appliances electric comprising means for controlling or selecting the temperature or power
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Abstract
The invention relates to the technical field of soft magnetic material production and processing, in particular to a chain belt type atmosphere brazing furnace for soft magnetic material production and processing, which comprises a heating furnace body, a mesh belt transmission structure and an ammonia decomposition protective gas supply structure, wherein a feeding table is fixedly arranged at the left end of the heating furnace body, a discharging table is fixedly arranged at the right end of the heating furnace body, a conveying frame is fixedly arranged between the feeding table and the discharging table, the mesh belt transmission structure is arranged on the conveying frame, and a plurality of turn-over structures are arranged above the conveying frame; a linear tunnel type hearth is arranged in the heating furnace body, and the hearth is sleeved on the mesh belt transmission structure and the outer wall of the conveying frame; protective gas input ports are arranged on the upper end face of the hearth at equal intervals, and the outer parts of the protective gas input ports are communicated with an ammonia decomposition protective gas supply structure; the invention is beneficial to the uniform heating of the soft magnetic material strip-shaped block, ensures the heat treatment effect and improves the qualification rate of products; on the other hand, the bottom surface of the soft magnetic material strip block can be prevented from contacting the surface of the conveying net belt for a long time to generate scale.
Description
Technical Field
The invention relates to the technical field of soft magnetic material production and processing, in particular to a chain belt type atmosphere brazing furnace for soft magnetic material production and processing.
Background
In recent years, there is a trend toward the driving, automatic control and multi-functionalization of products using electric driving devices and electronic control devices, and one of the key core materials is a soft magnetic material. The soft magnetic material plays a role in energy coupling transfer and conversion in various devices. At present, energy is increasingly scarce and environmental problems are increasingly serious, the loss of soft magnetic materials is reduced, the magnetic core efficiency is improved, and the magnetic core has great significance in the aspects of saving energy, controlling environmental pollution and the like. Wherein, the soft magnetic material means that when magnetization occurs at Hc of not more than 1000A/m, such a material is called a soft magnetic material. Typical soft magnetic materials can achieve maximum magnetization intensity by using a minimum external magnetic field, are easy to magnetize and demagnetize, and are iron-silicon alloy (silicon steel sheet) and various soft magnetic ferrites and the like.
After being processed into parts, the soft magnetic material must be annealed and heat-treated in a chain-belt type atmosphere brazing furnace to obtain good soft magnetic performance and eliminate processing stress. For example, the utility model with the patent number 201920669029.7 is the closest prior art, and discloses a brazing furnace for large components, which comprises a furnace body, a linear tunnel type hearth is formed inside the furnace body, the hearth is respectively a preheating section, a heating section and a slow cooling section from an inlet to an outlet, a heating device and a temperature control device are arranged in the furnace body, a protective atmosphere input port is arranged on the furnace body, the furnace body is respectively provided with a movable cover plate at the inlet and the outlet of the hearth, a muffle furnace which extends along the length direction and is provided with openings at both ends is arranged in the hearth, a graphite slide way is arranged in the muffle, a plurality of corundum mullite push plates are arranged in the graphite slide way, a feeding push plate mechanism for pushing the corundum push plates to slide in the graphite slide way along the length direction is arranged at the inlet of the hearth, a movable trolley placing position is arranged between the push plate end of the feeding push plate mechanism and the inlet of, the utility model can meet the requirement of continuous atmosphere protection brazing of large and heavy workpieces, and can reduce the production and maintenance cost; but this utility model still has some shortcomings, for example, soft magnetic material strip piece can not overturn at the guipure upper surface, is heated inhomogeneously, and the heat treatment effect is unsatisfactory, and the bottom surface of soft magnetic material strip piece easily produces the cinder simultaneously, and the defective percentage is high.
Disclosure of Invention
The invention designs a chain belt type atmosphere brazing furnace for producing and processing soft magnetic materials, aiming at the problems that a soft magnetic material strip-shaped block cannot be overturned on the upper surface of a mesh belt and the bottom surface of the soft magnetic material strip-shaped block is easy to generate oxide skin and has high defective rate.
The invention is realized by the following technical scheme:
the utility model provides a soft magnetic material production and processing is with chain belt atmosphere stove of brazing, includes heating furnace body, guipure transmission structure, electrical control system and ammonia decomposition protective gas supply structure, heating furnace body left end fixed mounting has the material loading platform, heating furnace body's left side wall is equipped with the feed inlet, heating furnace body's right-hand member fixed mounting has a discharge bench, heating furnace body's right side wall is opened there is the discharge gate, the material loading platform with fixed mounting has the conveying frame between the discharge bench, the up end fixed mounting of conveying frame has a pair of L shape deflector, install on the conveying frame guipure transmission structure, guipure transmission structure includes conveying mesh belt, driving motor, variable frequency speed regulator, driving sprocket, driven sprocket, first pivot, guide roll and tensioning roll, driving sprocket, driven sprocket and tensioning roll all install in conveying mesh belt inner wall, the guide roller is arranged on the outer wall of the conveying mesh belt, the driving chain wheel is fixed on the outer wall of the first rotating shaft, the first rotating shaft is driven by the transmission motor, and the input end of the transmission motor is connected with an external power supply through a variable-frequency speed regulator; a plurality of turnover structures are arranged above the conveying frame, and each turnover structure comprises a second rotating shaft, a stepping motor and two turnover discs;
The heating furnace comprises a heating furnace body, a mesh belt transmission structure, a furnace frame, a furnace chamber, a first heating area, a second heating area, a heat preservation area, a first cooling area, a second cooling area and a cooling area, wherein the heating furnace body is internally provided with a linear tunnel type furnace chamber which is sleeved on the outer wall of the mesh belt transmission structure and the outer wall of the transmission frame; a plurality of protective gas input ports are arranged on the upper end face of the hearth at equal intervals, the outer parts of the protective gas input ports are communicated with the ammonia decomposition protective gas supply structure through gas pipes, the outer wall of the water cooling sleeve is communicated with a water inlet pipe and a water outlet pipe, the water inlet pipe is communicated with a water collecting tank through a circulating water pump, and the water outlet pipe is communicated with an external sewer pipe; a plurality of waste gas discharge ports are arranged on the lower end face of the hearth at equal intervals, and the waste gas discharge ports are communicated with the exhaust structure through gas outlet pipes;
the electric appliance control system is arranged on the inner surface of the heating furnace body shell, the front surface of the heating furnace body is provided with a control panel which is electrically connected with the electric appliance control system, and the control panel is provided with a power supply button, a mesh belt forward rotation button, a mesh belt stop button, an air inlet starting button, an exhaust button, and a temperature controller and a heating switch of each section; and the signal input end of the electric appliance control system is also electrically connected with the signal output end of the computer control system.
As a further improvement of the scheme, the two turnover plates are arranged in parallel and are fixed on the outer wall of the second rotating shaft, two ends of the second rotating shaft are rotatably arranged on the front side wall and the rear side wall of the hearth through bearings, the bearings and the side walls of the hearth are sealed through sealing rings, and the rear end of the second rotating shaft penetrates out of the rear side wall of the hearth and is connected with the output end of the stepping motor.
As a further improvement of the scheme, four clamping grooves for turning over the soft magnetic materials are uniformly formed in the disc surfaces of the two turnover discs along the circumference, and the two turnover discs are respectively arranged on the front side and the rear side of the conveying mesh belt.
As a further improvement of the above scheme, a pair of laser sensors which are oppositely emitted are arranged at the inlet of the feed port, the signal output end of the laser sensor is electrically connected with the signal input end of the electrical appliance control system, and the electrical appliance control system can control the operation of the turnover structure.
As a further improvement of the scheme, the number of the turnover structures arranged in the first temperature-raising area, the second temperature-raising area, the heat preservation area, the first temperature-reducing area and the second temperature-reducing area is 1-2.
As a further improvement of the above scheme, the feed inlet with the top of discharge gate all is equipped with the air curtain machine, the air curtain machine is linked together through air supply pipe and the connector of giving vent to anger of installing on nitrogen gas tank top, it is equipped with the connector upper end of giving vent to anger and is equipped with relief pressure valve, jar interior gas barometer and output gas barometer to give vent to anger to be equipped with on the connector of giving vent to anger, and the lateral wall is equipped with the regulating switch.
As a further improvement of the above scheme, the heating structure includes a ceramic tube and resistance wires mounted on an inner wall of the ceramic tube, the plurality of heating structures are electrically connected to the temperature control structure, the temperature control structure includes a controller and a plurality of thermocouples arranged on an inner wall of the furnace at intervals, the thermocouples are connected to the controller to send temperature signals to the controller, and the controller is connected to the resistance wires to control the magnitude of current passing through each resistance wire.
As a further improvement of the above aspect, the ammonia decomposition protective gas supply structure includes an ammonia decomposition furnace and a resistance heating element disposed inside the ammonia decomposition furnace.
As a further improvement of the scheme, the exhaust structure comprises an exhaust pump, an exhaust main pipe and exhaust branch pipes, wherein the exhaust pump is arranged on the exhaust main pipe, the upper end of the exhaust main pipe is communicated with the exhaust branch pipes, and the exhaust branch pipes extend out of the top end of the heating furnace body.
As a further improvement of the scheme, the temperature of the first temperature-raising zone is controlled to be 650 +/-50 ℃, the temperature of the second temperature-raising zone is 800 +/-50 ℃, the temperature of the heat-preserving zone is 920 +/-50 ℃, the temperature of the first temperature-reducing zone is 780 +/-50 ℃, the temperature of the second temperature-reducing zone is 670 +/-50 ℃ and the temperature of the cooling temperature zone is less than or equal to 40 ℃.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through arranging the turnover structure, the turnover structure comprises the second rotating shaft, the stepping motor and the two turnover plates, four clamping grooves are uniformly formed in the plate surfaces of the two turnover plates along the circumference, when the soft magnetic material strip-shaped block parts enter the clamping grooves under the transmission of the conveying mesh belt, the stepping motor can simultaneously rotate 180 degrees or 90 degrees under the control of the electric appliance control system, so that the soft magnetic material strip-shaped block is turned over 180 degrees or 90 degrees, on one hand, the soft magnetic material strip-shaped block is favorably heated uniformly, the heat treatment effect is ensured, and the qualification rate of the product is improved; on the other hand, the bottom surface of the soft magnetic material strip-shaped block can be prevented from generating oxide skin due to long-time contact with the surface of the conveying net belt; meanwhile, as a further optimization of the scheme, a pair of laser sensors which are in opposite incidence are arranged at the inlet of the feeding hole, the signal output end of each laser sensor is electrically connected with the signal input end of the electric appliance control system, the laser sensors receive signals sent by the soft magnetic material strip-shaped blocks entering from the feeding hole, the electric appliance control system calculates the transmission speed of the transmission mesh belt, calculates the time for the soft magnetic material strip-shaped blocks to reach the inside of the clamping grooves, and then can control the working time points of the corresponding clamping grooves, so that the intelligent control is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a perspective view of a first perspective of the present invention;
FIG. 2 is a perspective view of a second embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 according to the present invention;
FIG. 4 is a schematic view of the internal structure of the heating furnace body according to the present invention;
FIG. 5 is a schematic view of the installation of the transmission frame, the mesh belt transmission structure and the turn-over structure of the present invention;
FIG. 6 is a schematic view of a first embodiment of a belt drive according to the present invention;
FIG. 7 is a schematic view of the internal structure of the furnace of the present invention;
FIG. 8 is a schematic view of the installation of the heating structure and the temperature control structure according to the present invention;
FIG. 9 is a schematic view showing the installation of the water cooling jacket, the circulating water pump and the water collecting tank according to the present invention;
FIG. 10 is a schematic view of the installation of the air curtain machine and the nitrogen tank in the present invention;
FIG. 11 is a schematic view showing the connection between the gas pipe and the ammonia decomposition protective gas supply structure according to the present invention;
FIG. 12 is a schematic view of the connection between the air outlet pipe and the exhaust structure according to the present invention;
FIG. 13 is a schematic diagram of an electrical system control module of the present invention;
FIG. 14 is a schematic diagram illustrating parameter control of each temperature zone according to the first embodiment of the present invention;
FIG. 15 is a schematic view of a second embodiment of a belt drive according to the present invention;
fig. 16 is a partially enlarged schematic view of the laser sensor of the present invention after mounting.
Wherein, 1-heating furnace body, 2-mesh belt transmission structure, 201-conveying mesh belt, 202-transmission motor, 203-variable frequency speed regulator, 204-driving sprocket, 205-driven sprocket, 206-first rotating shaft, 207-guide roller, 208-tension roller, 3-electrical apparatus control system, 4-ammonia decomposition protective gas supply structure, 401-ammonia decomposition furnace, 402-resistance heating element, 5-feeding table, 6-feeding inlet, 7-discharging table, 8-discharging outlet, 9-conveying frame, 10-L-shaped guide plate, 11-turn-over structure, 111-second rotating shaft, 112-stepping motor, 113-turn-over disc, 114-bearing, 115-clamping groove, 12-furnace chamber, 121-first temperature-raising area, 122-second temperature-raising area, 123-heat preservation area, 124-first cooling area, 125-second cooling area, 126-cooling temperature area, 13-heating structure, 14-water cooling jacket, 15-gas pipe, 16-water inlet pipe, 17-water outlet pipe, 18-circulating water pump, 19-water collecting tank, 20-waste gas outlet port, 21-gas outlet pipe, 22-gas exhaust structure, 221-gas exhaust pump, 222-main gas exhaust pipe, 223-branch gas exhaust pipe, 23-control panel, 231-power button, 232-mesh belt forward rotation button, 233-mesh belt stop button, 234-gas inlet start button, 235-gas exhaust button, 236-temperature controller, 237-heating switch, 24-laser sensor, 25-air curtain machine, 26-gas supply pipe, 27-nitrogen tank, 28-an outlet connector, 29-a pressure reducing valve, 30-an in-tank gas pressure gauge, 31-an output gas pressure gauge, 32-an outlet adjusting switch, 33-a temperature control structure, 331-a controller, 332-a thermocouple, 34-a protective gas input port and 35-a computer control system.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
The invention is further described below with reference to the accompanying drawings.
A chain belt type atmosphere brazing furnace for producing and processing soft magnetic materials comprises a heating furnace body 1, a mesh belt transmission structure 2, an electric appliance control system 3 and an ammonia decomposition protective gas supply structure 4, wherein a feeding table 5 is fixedly installed at the left end of the heating furnace body 1, a feeding hole 6 is formed in the left side wall of the heating furnace body 1, a discharging table 7 is fixedly installed at the right end of the heating furnace body 1, a discharging hole 8 is formed in the right side wall of the heating furnace body 1, a conveying frame 9 is fixedly installed between the feeding table 5 and the discharging table 7, a pair of L-shaped guide plates 10 is fixedly installed on the upper end face of the conveying frame 9, the mesh belt transmission structure 2 is installed on the conveying frame 9, the mesh belt transmission structure 2 comprises a conveying mesh belt 201, a transmission motor 202, a frequency conversion 203, a driving sprocket 204, a driven sprocket 205, a first rotating shaft 206, a guide roller 207 and a tensioning roller 208, the driving sprocket 204, the driven sprocket 205 and the tensioning roller 208 are all installed, the guide roller 207 is installed on the outer wall of the conveyor belt 201, the drive sprocket 204 is fixed on the outer wall of the first rotating shaft 206, the first rotating shaft 206 is driven by the drive motor 202, the input end of the drive motor 202 is connected with the external power supply through the variable frequency speed regulator 203, the variable frequency speed regulator can change the rotating speed of the drive motor 202, and the upper surface of the conveyor belt 201 and the upper surface of the bottom plate of the L-shaped guide plate 10 are kept horizontal; after the transmission motor 202 is started, the driving sprocket 204 can be driven to rotate by the rotation of the driving sprocket 204, and the transmission mesh belt 201 can be further driven to rotate, wherein the tensioning roller 208 is used for preventing the transmission mesh belt 201 from loosening, and the guide roller 207 is used for changing the rotation track of the transmission mesh belt 201;
As shown in fig. 1 and 10, the top ends of the feed inlet 6 and the discharge outlet 8 are respectively provided with an air curtain machine 25, the air curtain machine 25 is communicated with an air outlet connector 28 arranged at the top end of a nitrogen tank 27 through an air supply pipe 26, the upper end of the air outlet connector 28 is provided with a pressure reducing valve 29, an in-tank gas pressure gauge 30 and an output gas pressure gauge 31, the front side wall of the air outlet connector 28 is provided with an air outlet adjusting switch 32, the air curtain machine 25 drives strong nitrogen flow generated by a through-flow or centrifugal wind wheel to form an invisible door curtain, the heating furnace body 1 is divided into two independent temperature areas, and internal dust, smoke and the like can be effectively isolated from flying out of the furnace;
as shown in fig. 5 and 6, a plurality of turnover structures 11 are arranged above the conveying frame 9, and each turnover structure 11 includes a second rotating shaft 111, a stepping motor 112 and two turnover plates 113; the turnover structure 11 can turn over the soft magnetic material strip-shaped block for many times, thereby being beneficial to the soft magnetic material strip-shaped block to be heated uniformly, ensuring the heat treatment effect and improving the qualification rate of products.
As shown in fig. 4, a linear tunnel type furnace chamber 12 is arranged inside the heating furnace body 1, the furnace chamber 12 is sleeved on the outer walls of the mesh belt transmission structure 2 and the conveying frame 9, and the furnace chamber 12 sequentially comprises a first temperature-raising area 121, a second temperature-raising area 122, a heat-preserving area 123, a first temperature-reducing area 124, a second temperature-reducing area 125 and a cooling temperature area 126 from an inlet to an outlet; as shown in fig. 7 and 8, the inner walls of the first temperature-raising region 121, the second temperature-raising region 122, the heat-preserving region 123, the first temperature-lowering region 124, and the second temperature-lowering region 125 are all provided with mutually independent heating structures 13, each heating structure 13 includes a ceramic tube and a resistance wire installed on the inner wall of the ceramic tube, each heating structure 13 is electrically connected with a temperature-controlling structure 33, each temperature-controlling structure 33 includes a controller 331 and a plurality of thermocouples 332 arranged on the inner wall of the hearth 12 at intervals, the thermocouples 332 are connected with the controller 331 to send temperature signals to the controller 331, and the controller 331 is connected with the resistance wires to control the magnitude of current passing through each resistance wire; each thermocouple 332 forms a temperature monitoring point, specifically, one temperature monitoring point is respectively arranged in the first temperature-raising area 121, the second temperature-raising area 122, the heat preservation area 123, the first temperature-reducing area 124 and the second temperature-reducing area 125, the temperature is accurately controlled by the thermocouple 332, the temperature control precision is +/-1 ℃, and the heating system can be well controlled by the controller 331 so as to meet the heating requirement;
As shown in fig. 4 and 11, a plurality of shielding gas input ports 34 are arranged on the upper end surface of the furnace 12 at equal intervals, the outside of each shielding gas input port 34 is communicated with the ammonia decomposition shielding gas supply structure 4 through a gas pipe 15, the ammonia decomposition shielding gas supply structure 4 comprises an ammonia decomposition furnace 401 and a resistance heating element 402 arranged inside the ammonia decomposition furnace 401, and the ammonia decomposition atmosphere is prepared by using liquid ammonia as a raw material and by the ammonia decomposition furnace 401 under the action of heating, the following reactions occur: wherein, nitrogen plays a role of protecting atmosphere, and hydrogen has reducing power, so that the soft magnetic material strip block at high temperature can not be oxidized, and the part which is partially oxidized can be reduced.
As shown in fig. 4 and 9, the outer wall of the cooling temperature zone 126 is sleeved with a water cooling jacket 14, the outer wall of the water cooling jacket 14 is communicated with a water inlet pipe 16 and a water outlet pipe 17, the water inlet pipe 16 is communicated with a water collecting tank 19 through a circulating water pump 18, and the water outlet pipe 17 is communicated with an external sewer pipe;
as shown in fig. 4 and 12, a plurality of exhaust gas outlets 20 are arranged at equal intervals on the lower end surface of the furnace 12, the exhaust gas outlets 20 are all communicated with an exhaust structure 22 through an exhaust pipe 21, the exhaust structure 22 comprises an exhaust pump 221, an exhaust main pipe 222 and exhaust branch pipes 223, the exhaust pump 221 is arranged on the exhaust main pipe 222, the upper end of the exhaust main pipe 222 is communicated with the exhaust branch pipes 223, and the exhaust branch pipes 223 extend out from the top end of the heating furnace body 1;
Wherein the temperature of the first temperature-raising zone 121 is controlled to be 650 +/-50 ℃, the temperature of the second temperature-raising zone 122 is 800 +/-50 ℃, the temperature of the heat-preserving zone 123 is 920 +/-50 ℃, the temperature of the first temperature-reducing zone 124 is 780 +/-50 ℃, the temperature of the second temperature-reducing zone 125 is 670 +/-50 ℃, and the temperature of the cooling temperature zone 126 is less than or equal to 40 ℃; the number of the turnover structures 11 arranged in the first temperature-raising area 121, the second temperature-raising area 122, the heat-preserving area 123, the first temperature-reducing area 124 and the second temperature-reducing area 125 is 1-2.
As shown in fig. 3 and 13, the electrical control system 3 is disposed on the inner surface of the outer shell of the heating furnace body 1, the front surface of the heating furnace body 1 is provided with a control panel 23 electrically connected with the electrical control system 3, and the control panel 23 is provided with a power button 231, a mesh belt forward rotation button 232, a mesh belt stop button 233, an air intake start button 234, an exhaust button 235, and a temperature controller 236 and a heating switch 237 of each section; the electrical control system 3 is electrically connected to the signal input terminal of the computer control system 35 and also electrically connected to the signal input terminal of the control panel 23.
The working mechanism of the invention is as follows: the temperature control precision of the furnace is extremely high (plus or minus 1 ℃) through fine and reasonable heating furnace zoning of a chain belt type atmosphere brazing furnace, hardware selection and software parameter adjustment of a high-precision advanced temperature control instrument, the microstructure of a soft magnetic material can be improved through annealing curves formed by temperature zones, and easy magnetization axes of crystal grains are arranged in the same direction; the magnetic domain texture enables the magnetic domain to be oriented along the direction of a magnetic field, so that the magnetic conductivity of the soft magnetic material is improved, and the coercive force of the soft magnetic material is reduced; after annealing heat treatment, the soft magnetic material has high magnetic conductivity and low coercive force, and can quickly respond to the change of an external magnetic field; the soft magnetic material improves the sensitivity of the electromagnetic product under the condition of low coercive force.
The working process of the invention is as follows:
(1) starting up: cleaning dust and impurities on a chain-belt type atmosphere brazing furnace before and after working, visually observing whether a switch and a button are reset or not, checking whether an air passage and a water passage are obviously aged and damaged or not, and whether a conveying net belt 201 is deformed and distorted or not, and if so, informing maintenance personnel to open equipment after the maintenance is qualified; secondly, opening a pressure reducing valve 29 on the air outlet connector 28 and a power switch of the circulating water pump 18, and checking whether the water pressure is more than or equal to 0.1MPa and the nitrogen pressure is more than or equal to 0.3 MPa; thirdly, installing a two-end air curtain machine 25, and checking whether the flow of an outlet air curtain is more than or equal to 30 LPM; fourthly, a power button 231 on the control panel 23 is turned on, and the computer control system 35 can be used for assisting in inputting working parameters after the equipment is electrified;
(2) the operation process comprises the following steps: after the chain belt type atmosphere brazing furnace is normally started, the process is carried out according to the following flow: a. opening the operating software on the computer control system 35, and inputting a correct user name and password to log in the system; b. clicking a process parameter button, entering a process parameter interface, and inputting process parameters into equipment according to the characteristics of a product; c. after the parameter setting is finished, the mesh belt forward rotation button 232 and the heating switch 237 on the control panel 23 are pressed; d. the first temperature-raising area 121, the second temperature-raising area 122, the heat-preserving area 123, the first temperature-reducing area 124 and the second temperature-reducing area 125 are sequentially heated to set temperatures, and after the temperatures of the areas are checked to be correct, the soft magnetic material strip-shaped block parts can be processed; d. placing the soft magnetic material strip-shaped block parts for substitute processing on a conveying mesh belt 201 of the feeding port 6, wherein the placing position is as central as possible of the conveying mesh belt 201;
(3) Shutdown: turning off all heating switches 237, stopping heating of the equipment, entering a cooling temperature area 126, and removing the air curtain machine 25; until the processed soft magnetic material strip-shaped block is led out from the discharge port 8, pressing the mesh belt stop button 233, and stopping the operation of the conveying mesh belt 201; cutting off the air source and the water source, closing the computer system, closing the power button 231 and then closing the main power switch of the equipment.
Example one
A chain belt type atmosphere brazing furnace for producing and processing soft magnetic materials comprises a heating furnace body 1, a mesh belt transmission structure 2, an electric appliance control system 3 and an ammonia decomposition protective gas supply structure 4, wherein a feeding table 5 is fixedly installed at the left end of the heating furnace body 1, a feeding hole 6 is formed in the left side wall of the heating furnace body 1, a discharging table 7 is fixedly installed at the right end of the heating furnace body 1, a discharging hole 8 is formed in the right side wall of the heating furnace body 1, a conveying frame 9 is fixedly installed between the feeding table 5 and the discharging table 7, a pair of L-shaped guide plates 10 is fixedly installed on the upper end face of the conveying frame 9, the mesh belt transmission structure 2 is installed on the conveying frame 9, the mesh belt transmission structure 2 comprises a conveying mesh belt 201, a transmission motor 202, a frequency conversion 203, a driving sprocket 204, a driven sprocket 205, a first rotating shaft 206, a guide roller 207 and a tensioning roller 208, the driving sprocket 204, the driven sprocket 205 and the tensioning roller 208 are all installed, the guide roller 207 is arranged on the outer wall of the conveying mesh belt 201, the driving chain wheel 204 is fixed on the outer wall of the first rotating shaft 206, the first rotating shaft 206 is driven by the transmission motor 202, and the input end of the transmission motor 202 is connected with an external power supply through the variable-frequency speed regulator 203; 5 turnover structures 11 are arranged above the conveying frame 9, and each turnover structure 11 comprises a second rotating shaft 111, a stepping motor 112 and two turnover discs 113; as shown in fig. 1 and 10, the top ends of the feed inlet 6 and the discharge outlet 8 are respectively provided with an air curtain machine 25, the air curtain machine 25 is communicated with an air outlet connector 28 arranged at the top end of a nitrogen tank 27 through an air supply pipe 26, the upper end of the air outlet connector 28 is provided with a pressure reducing valve 29, an in-tank gas pressure gauge 30 and an output gas pressure gauge 31, and the front side wall of the air outlet connector 28 is provided with an air outlet adjusting switch 32;
The heating furnace body 1 is internally provided with a linear tunnel type hearth 12, the hearth 12 is sleeved on the outer walls of the mesh belt transmission structure 2 and the conveying frame 9, the hearth 12 sequentially comprises a first temperature-raising area 121, a second temperature-raising area 122, a heat-preserving area 123, a first temperature-lowering area 124, a second temperature-lowering area 125 and a cooling temperature area 126 from the inlet to the outlet, the first temperature-raising area 121, the inner walls of the second temperature rising zone 122, the heat preservation zone 123, the first temperature reduction zone 124 and the second temperature reduction zone 125 are all provided with a mutually independent heating structure 13, each heating structure 13 comprises a ceramic tube and resistance wires arranged on the inner wall of the ceramic tube, 5 heating structures 13 are all electrically connected with the temperature control structure 33, each temperature control structure 33 comprises a controller 331 and a plurality of thermocouples 332 arranged on the inner wall of the hearth 12 at intervals, the thermocouples 332 are connected with the controller 331 to send temperature signals to the controller 331, and the controller 331 is connected with the resistance wires to control the current passing through each resistance wire; the outer wall of the cooling temperature zone 126 is sleeved with a water cooling jacket 14; 3 protective gas input ports 34 are arranged on the upper end face of the hearth 12 at equal intervals, the outer parts of the protective gas input ports 34 are communicated with an ammonia decomposition protective gas supply structure 4 through gas pipes 15, and the ammonia decomposition protective gas supply structure 4 comprises an ammonia decomposition furnace 401 and a resistance heating element 402 arranged inside the ammonia decomposition furnace 401; the outer wall of the water cooling jacket 14 is communicated with a water inlet pipe 16 and a water outlet pipe 17, the water inlet pipe 16 is communicated with a water collecting tank 19 through a circulating water pump 18, and the water outlet pipe 17 is communicated with an external sewer pipe; 2 waste gas discharge ports 20 are arranged on the lower end face of the hearth 12 at equal intervals, the waste gas discharge ports 20 are communicated with an exhaust structure 22 through an air outlet pipe 21, the exhaust structure 22 comprises an exhaust pump 221, an exhaust main pipe 222 and exhaust branch pipes 223, the exhaust pump 221 is arranged on the exhaust main pipe 222, the upper end of the exhaust main pipe 222 is communicated with 3 exhaust branch pipes 223, and the exhaust branch pipes 223 extend out of the top end of the heating furnace body 1;
Wherein the temperature of the first temperature-raising zone 121 is controlled to be 650 ℃, the temperature of the second temperature-raising zone 122 is controlled to be 800 ℃, the temperature of the heat-preserving zone 123 is controlled to be 920 ℃, the temperature of the first temperature-reducing zone 124 is 780 ℃, the temperature of the second temperature-reducing zone 125 is controlled to be 670 ℃, and the temperature of the cooling temperature zone 126 is controlled to be 30 ℃; the time of the soft magnetic material strip block in the first temperature rising area 121 is 30min, the time of the second temperature rising area 122 is 30min, the time of the heat preservation area 123 is 60min, the time of the first temperature reduction area 124 is 30min, the time of the second temperature reduction area 125 is 40min, and the time of the cooling temperature area 126 is 40 min; the number of the turn-over structures 11 arranged in the first temperature-raising area 121, the second temperature-raising area 122, the heat-preserving area 123, the first temperature-reducing area 124 and the second temperature-reducing area 125 is 1.
As shown in fig. 3 and 13, the electrical control system 3 is disposed on the inner surface of the outer shell of the heating furnace body 1, the front surface of the heating furnace body 1 is provided with a control panel 23 electrically connected with the electrical control system 3, and the control panel 23 is provided with a power button 231, a mesh belt forward rotation button 232, a mesh belt stop button 233, an air intake start button 234, an exhaust button 235, and a temperature controller 236 and a heating switch 237 of each section; the electrical control system 3 is electrically connected to the signal input terminal of the computer control system 35 and also electrically connected to the signal input terminal of the control panel 23. The electrical control system 3 is electrically connected to the signal input terminal of the computer control system 35 and also electrically connected to the signal input terminal of the control panel 23.
As shown in fig. 5 and 6, the two turnover plates 113 are arranged in parallel and opposite to each other, and are fixed on the outer wall of the second rotating shaft 111, two ends of the second rotating shaft 111 are rotatably mounted on the front and rear side walls of the furnace 12 through bearings 114, the bearings 114 and the side walls of the furnace 12 are sealed by sealing rings, and the rear end of the second rotating shaft 111 penetrates out of the rear side wall of the furnace 12 and is connected with the output end of the stepping motor 112; four clamping grooves 115 for turning over the soft magnetic materials are uniformly formed in the disc surfaces of the two turning-over discs 113 along the circumference, and the two turning-over discs 113 are respectively arranged on the front side and the rear side of the conveying mesh belt 201.
In the initial state of the embodiment, the lower edge of one of the clamping grooves 115 on the turnover disc 113 is kept horizontal with the conveying mesh belt 201 and the upper surface of the bottom plate of the L-shaped guide plate 10, the soft magnetic material strip-shaped block parts enter the clamping grooves 115 under the conveying of the conveying mesh belt 201, the two turnover discs 113 can simultaneously rotate 180 degrees under the control of the electrical control system 3 by the stepping motor 112, so that the soft magnetic material strip-shaped block is turned over 180 degrees, and can be turned over for many times under the action of the turnover structure 11 in each zone, thereby being beneficial to uniformly heating the soft magnetic material strip-shaped block, ensuring the heat treatment effect and improving the qualification rate of products; on the other hand, the bottom surface of the soft magnetic material strip block is prevented from being oxidized due to the contact with the surface of the conveying belt 201 for a long time.
Example two
On the basis of the first embodiment, the shapes of the locking grooves 115 formed on the two turn-over plates 113 are different, and as shown in fig. 15, the whole turn-over plates 113 are in a cross-like shape.
In use, the soft magnetic material strip block is conveyed by the conveying mesh belt 201 to enter the clamping groove 115, the two turnover discs 113 are simultaneously rotated by 90 degrees by the stepping motor 112 under the control of the electrical control system 3, so that the soft magnetic material strip block is turned by 90 degrees, and the four peripheral surfaces of the soft magnetic material strip block are sequentially turned over, so that the soft magnetic material strip block is heated more uniformly compared with the first embodiment.
EXAMPLE III
On the basis of the second embodiment, as shown in fig. 16, a pair of laser sensors 24 is disposed at the inlet of the feeding hole 6, the signal output end of the laser sensor 24 is electrically connected to the signal input end of the electrical appliance control system 3, and the electrical appliance control system 3 can control the operation of the turnover structure 11.
When the device is used in this embodiment, the laser sensor 24 receives a signal sent by the soft magnetic material strip-shaped block entering from the feeding port 6, the electrical appliance control system 3 calculates the transmission speed of the transmission mesh belt 201, calculates the time when the soft magnetic material strip-shaped block reaches the inside of the card slot 115, and then controls the working time point inside the corresponding card slot 115, so that the device is more intelligent.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a soft magnetic material production and processing is with chain belt formula atmosphere brazing furnace, includes heating furnace body (1), guipure transmission structure (2), electrical apparatus control system (3) and ammonia decomposition protective gas supply structure (4), its characterized in that: heating furnace body (1) left end fixed mounting has material loading platform (5), the left side wall of heating furnace body (1) is equipped with feed inlet (6), the right-hand member fixed mounting of heating furnace body (1) has ejection of compact platform (7), the right side wall of heating furnace body (1) is opened there is discharge gate (8), material loading platform (5) with fixed mounting has carriage (9) between ejection of compact platform (7), the up end fixed mounting of carriage (9) has a pair of L shape deflector (10), install on carriage (9) guipure transmission structure (2), guipure transmission structure (2) are including conveying guipure (201), driving motor (202), frequency conversion speed regulator (203), drive sprocket (204), driven sprocket (205), first pivot (206), guide roll (207) and tensioning roll (208), drive sprocket (204), The driven chain wheel (205) and the tension roller (208) are both arranged on the inner wall of the conveying mesh belt (201), the guide roller (207) is arranged on the outer wall of the conveying mesh belt (201), the driving chain wheel (204) is fixed on the outer wall of the first rotating shaft (206), the first rotating shaft (206) is driven by the transmission motor (202), and the input end of the transmission motor (202) is connected with an external power supply through a variable frequency speed regulator (203); a plurality of turnover structures (11) are arranged above the conveying frame (9), and each turnover structure (11) comprises a second rotating shaft (111), a stepping motor (112) and two turnover discs (113);
A linear tunnel type hearth (12) is arranged in the heating furnace body (1), the hearth (12) is sleeved on the outer walls of the mesh belt transmission structure (2) and the conveying frame (9), the hearth (12) sequentially comprises a first heating area (121), a second heating area (122), a heat preservation area (123), a first cooling area (124), a second cooling area (125) and a cooling area (126) from an inlet to an outlet, the inner walls of the first heating area (121), the second heating area (122), the heat preservation area (123), the first cooling area (124) and the second cooling area (125) are all provided with mutually independent heating structures (13), and the outer wall of the cooling area (126) is sleeved with a water cooling sleeve (14); a plurality of protective gas input ports (34) are arranged on the upper end face of the hearth (12) at equal intervals, the outside of each protective gas input port (34) is communicated with the ammonia decomposition protective gas supply structure (4) through a gas pipe (15), the outer wall of the water cooling sleeve (14) is communicated with a water inlet pipe (16) and a water outlet pipe (17), the water inlet pipe (16) is communicated with a water collecting tank (19) through a circulating water pump (18), and the water outlet pipe (17) is communicated with an external sewer pipe; a plurality of waste gas discharge ports (20) are arranged on the lower end face of the hearth (12) at equal intervals, and the waste gas discharge ports (20) are communicated with an exhaust structure (22) through gas outlet pipes (21);
The electric appliance control system (3) is arranged on the inner surface of the shell of the heating furnace body (1), the front surface of the heating furnace body (1) is provided with a control panel (23) which is electrically connected with the electric appliance control system (3), and the control panel (23) is provided with a power supply button (231), a mesh belt forward rotation button (232), a mesh belt stop button (233), an air inlet start button (234), an air outlet button (235), a temperature controller (236) of each section and a heating switch (237); and the signal input end of the electric appliance control system (3) is also electrically connected with the signal output end of the computer control system (35).
2. The chain-type atmosphere brazing furnace for producing and processing a soft magnetic material according to claim 1, wherein: two just to parallel arrangement between turn-over dish (113) front and back, and all be fixed in the outer wall of second pivot (111), the both ends of second pivot (111) are all rotated the installation through bearing (114) on the preceding, the back lateral wall of furnace (12), bearing (114) with utilize the sealing washer to seal between the lateral wall of furnace (12), the rear end of second pivot (111) by the back lateral wall of furnace (12) is worn out and with step motor (112)'s output is connected.
3. The chain-belt type atmosphere brazing furnace for producing and processing a soft magnetic material according to claim 2, wherein: four clamping grooves (115) for overturning the soft magnetic material are uniformly formed in the disc surfaces of the two overturning discs (113) along the circumference, and the two overturning discs (113) are respectively arranged on the front side and the rear side of the conveying mesh belt (201).
4. The chain-belt type atmosphere brazing furnace for producing and processing a soft magnetic material according to claim 3, wherein: the inlet of feed inlet (6) is equipped with a pair of laser sensor (24) of correlation, the signal output part of laser sensor (24) with the signal input part electric connection of electrical apparatus control system (3), electrical apparatus control system (3) steerable turn-over structure (11)'s operation.
5. The chain-type atmosphere brazing furnace for producing and processing a soft magnetic material according to claim 1, wherein: the number of the turn-over structures (11) arranged in the first temperature-raising area (121), the second temperature-raising area (122), the heat preservation area (123), the first temperature-reducing area (124) and the second temperature-reducing area (125) is 1-2.
6. The chain-type atmosphere brazing furnace for producing and processing a soft magnetic material according to claim 1, wherein: feed inlet (6) with the top of discharge gate (8) all is equipped with air curtain machine (25), air curtain machine (25) are linked together through air supply pipe (26) and connector (28) of giving vent to anger of installing on nitrogen gas jar (27) top, it is equipped with connector (28) upper end of giving vent to anger to be equipped with on connector (28) of giving vent to anger to give vent to anger and is equipped with relief pressure valve (29), jar internal gas barometer (30) and output gas barometer (31), and lateral wall is equipped with regulating switch (32) of giving vent to anger before connector (28) of giving vent.
7. The chain-type atmosphere brazing furnace for producing and processing a soft magnetic material according to claim 1, wherein: the heating structure (13) comprises a ceramic tube and resistance wires arranged on the inner wall of the ceramic tube, the heating structure (13) is electrically connected with a temperature control structure (33), the temperature control structure (33) comprises a controller (331) and a plurality of thermocouples (332) arranged on the inner wall of the hearth (12) at intervals, the thermocouples (332) are connected with the controller (331) to send temperature signals to the controller (331), and the controller (331) is connected with the resistance wires to control the current passing through the resistance wires.
8. The chain-type atmosphere brazing furnace for producing and processing a soft magnetic material according to claim 1, wherein: the ammonia decomposition protective gas supply structure (4) comprises an ammonia decomposition furnace (401) and a resistance heating element (402) arranged inside the ammonia decomposition furnace (401).
9. The chain-type atmosphere brazing furnace for producing and processing a soft magnetic material according to claim 1, wherein: the exhaust structure (22) comprises an exhaust pump (221), an exhaust main pipe (222) and exhaust branch pipes (223), the exhaust pump (221) is arranged on the exhaust main pipe (222), the upper end of the exhaust main pipe (222) is communicated with the exhaust branch pipes (223), and the exhaust branch pipes (223) extend out of the top end of the heating furnace body (1).
10. The chain-type atmosphere brazing furnace for producing and processing a soft magnetic material according to claim 1, wherein: the temperature of the first temperature-raising zone (121) is controlled to be 650 +/-50 ℃, the temperature of the second temperature-raising zone (122) is 800 +/-50 ℃, the temperature of the heat-preserving zone (123) is 920 +/-50 ℃, the temperature of the first temperature-reducing zone (124) is 780 +/-50 ℃, the temperature of the second temperature-reducing zone (125) is 670 +/-50 ℃, and the temperature of the cooling temperature zone (126) is less than or equal to 40 ℃.
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Cited By (1)
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| CN116857953A (en) * | 2023-09-05 | 2023-10-10 | 广东中鹏热能科技股份有限公司 | Mesh belt kiln |
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