CN206736302U - A kind of crosswind circulation internal heat type tunnel purity nitrogen protection annealing furnace - Google Patents
A kind of crosswind circulation internal heat type tunnel purity nitrogen protection annealing furnace Download PDFInfo
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- CN206736302U CN206736302U CN201720326232.5U CN201720326232U CN206736302U CN 206736302 U CN206736302 U CN 206736302U CN 201720326232 U CN201720326232 U CN 201720326232U CN 206736302 U CN206736302 U CN 206736302U
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Abstract
The utility model discloses a kind of crosswind circulation internal heat type tunnel purity nitrogen protection annealing furnace.It includes a stainless steel Muffle pot laterally set, surround to form a cavity by adiabatic wall outside blower fan on the outside of the bottom opening of stainless steel Muffle pot, longitudinally asymmetric in the cavity to be disposed with adiabatic wall in the left inside adiabatic wall of blower fan and the blower fan right side, the lower section of adiabatic wall is longitudinally provided with left heated sealed pipe and right heated sealed pipe respectively in the left inside adiabatic wall of the blower fan and the blower fan right side；Water cooled seal axle is installed outside the blower fan, the upper end of water cooled seal axle is provided with heat resistant centrifugal fan, lower end connection external motors among the bottom of adiabatic wall；Adiabatic wall forms the left outlet of hot blast and the right outlet of hot blast between adiabatic inner wall outside blower fan respectively in the left inside adiabatic wall of the blower fan and the blower fan right side.In the utility model, workpiece can be made uniformly to heat, reduce workpiece internal-external temperature difference, improve the annealing quality of workpiece, improve the annealing efficiency of magnetic core element, and equipment occupation space is small, has a wide range of application.
Description
Technical field
Heat treatment equipment is the utility model is related to, more particularly to a kind of magnetic property for being used to improve soft magnetic core element
Crosswind circulation internal heat type tunnel purity nitrogen protection annealing furnace.
Background technology
At present, soft magnetic amorphous industry, which generally uses to apply, carries out 350-560 DEG C of annealing to improve under horizontal permanent magnetism highfield
The magnetic property of soft magnetic core element, for example, being limited by magnetic pole and retort height, use the compressed tunnel formula of external-heat pure
Nitrogen protects annealing furnace.But the major defect of the external-heat type of furnace is the internal-external temperature difference mistake that workpiece is heated in heating process
Greatly, particularly there is crystallization fever phenomenon (such as non-crystalline material), inside workpiece element temperature in heated workpiece material
Degree is often higher by outer member temperature up to as many as 160 DEG C, and extremely uneven, burning causes defective products to increase.It is outer what is routinely used
Under hot type, the heating condition without gas flowing, its heat transfer efficiency is very low, and workpiece ecto-entad heat transfer at a slow speed, internal-external temperature difference is very
Greatly.
Such as Chinese invention patent, Application No.：200910039582.3 soft magnetism is rolled up under transverse magnetic field it discloses one kind
Around the Equipment for Heating Processing and method of iron core, it includes a longitudinal tunnel annealing furnace, the heated workpiece of the samming section of the stove
Above and below be respectively arranged with N pole plates and S pole plates with ndfeb magnetic pole, between N pole plates and S pole plates produce by N to S's
The strength magnetic line of force vertically, the outside of upper and lower two pole plates can be understood as external magnetic circuit by pure iron yoke, the magnetic
Pole is integrally provided in continuous tunnel furnace surface upper and lower, and the sealing Muffle for laying Wound core workpiece is additionally provided with continuous tunnel furnace
Tank, anti-oxidation nitrogen is connected with Muffle pot.But the thermal inertia of this conventional external-heat mode of heating is serious, by executing agency
Heater is begun to warm up, it is necessary to can just pass to workpiece thermocouple by the air transmitted around stainless steel Muffle pot and workpiece, heat
Inertia time is very big, easily produces overtemperature and temperature control wave phenomenon, especially has a case that crystallization fever phenomenon in workpiece material
Under (such as non-crystalline material), overheat overtemperature causes workpiece to scrap situation often to occur.
Therefore, it is art technology to develop a kind of internal heat type tunnel purity nitrogen protection annealing furnace that can solve the problem that problem above
Personnel institute urgent need to solve the problem.
Utility model content
The utility model provides a kind of crosswind circulation internal heat type tunnel purity nitrogen protection annealing furnace, workpiece can be made uniformly to add
Heat, workpiece internal-external temperature difference is reduced, improve the annealing quality of workpiece, improve the annealing efficiency of magnetic core element, and equipment accounts for
It is small with space, have a wide range of application.
The purpose of this utility model is achieved through the following technical solutions：
A kind of crosswind circulation internal heat type tunnel purity nitrogen protection annealing furnace, including a stainless steel Muffle pot laterally set,
The outer middle side part of the stainless steel Muffle pot is coated with a circle heat-insulation layer, and the bosom of stainless steel Muffle pot is placed with heated
Workpiece, the both sides of the heated workpiece are arranged with insulating barrier；The bottom of the stainless steel Muffle pot is provided with opening, stainless
Surround to form a cavity by adiabatic wall outside blower fan on the outside of the bottom opening of steel Muffle pot, the longitudinally asymmetric arrangement in the cavity
There is an adiabatic wall in the left inside adiabatic wall of blower fan and the blower fan right side, the lower section difference of adiabatic wall in the left inside adiabatic wall of the blower fan and the blower fan right side
It is longitudinally provided with left heated sealed pipe and right heated sealed pipe；It is close that water cooling is installed among the bottom of adiabatic wall outside the blower fan
Axle is sealed, the upper end of the water cooled seal axle is provided with heat resistant centrifugal fan, lower end connection external motors, the heat resistant centrifugal fan position
Between left heated sealed pipe and right heated sealed pipe；In the left inside adiabatic wall of the blower fan and the blower fan right side adiabatic wall respectively with blower fan
The left outlet of hot blast and the right outlet of hot blast are formed between outer adiabatic inner wall, in the left inside adiabatic wall of blower fan and the blower fan right side between adiabatic wall
It is additionally provided with return air inlet, the left outlet of the hot blast in cavity, hot blast right outlet, return air inlet and stainless steel Muffle pot are internally formed thermal current
Circulation air path.
Further, the left and right both ends of the stainless steel Muffle pot are provided with sealing flange cover, the sealing flange cover with
The junction of stainless steel Muffle pot is provided with sealing ring.
Further, the inside of the stainless steel Muffle pot and it is provided with temperature control thermocouple close to the position of heated workpiece
Temperature measuring point.
Preferably, the temperature measuring point of the temperature control thermocouple is used to detect and control in stove close to the temperature of heated workpiece,
Temperature control thermocouple also forms closed loop with temperature control instrument and heater, so as to the temperature for controlling furnace temperature to reach required.
Preferably, the heat-insulation layer is arranged on the outer middle side part of stainless steel Muffle pot, and both ends extend at least past thermal insulation
Baffle plate.
Preferably, at least one in the insulating barrier can move left and right or pull along stainless steel Muffle top tank structure, with
It is easy to the shove charge of workpiece and comes out of the stove.
Preferably, in the left inside adiabatic wall of the blower fan and the blower fan right side rear and front end of adiabatic wall and the outer adiabatic wall of blower fan it is interior
Wall connects.
Compared with prior art, the utility model at least has advantages below：
By above-mentioned the technical solution of the utility model, apply the circulation of blower fan forced gas, by the heat transfer type of workpiece by
Contact conduction heat transfer is changed to convection heat transfer' heat-transfer by convection mode, and hot gas flow speed quickly, makes heat transfer efficiency be substantially reduced while raising
The internal-external temperature difference of workpiece；Internal heat type heating, the flowing of high-speed fan forced gas, thermal current are changed to as a result of by external-heat
Cycle-index within the workpiece is very high, and local hot gas passes the electric thermo-couple temperature at workpiece position up to hundreds of circulations per minute
The reaction time is very short between sensor and executing agency's heater, almost without thermal inertia, makes the temperature control of workpiece very accurate,
Greatly reduce the generation that workpiece overheat overtemperature is scrapped；Two hot air outlets from workpiece both sides, while to inside workpiece side
Heated to forced flow, improve even temperature effect, cycling hot air flow duct is located on the outside of body of heater, the smaller easily design of windage, no
Take the height space of Muffle tank body.
The utility model really using internal heat type and is forced to carry out purity nitrogen protection gas heating by the way of crosswind circulation, with
Reach the purpose that workpiece uniformly heats, can reach reduces workpiece internal-external temperature difference, improves the annealing quality of workpiece, improves magnetic core element
Annealing efficiency technique effect, this equipment is also applied for the technological requirement of the continuous magnetic anneal of workpiece step-by-step movement, expands simultaneously
Big application.
Brief description of the drawings
Fig. 1 is a kind of front for crosswind circulation internal heat type tunnel purity nitrogen protection annealing furnace that the utility model embodiment provides
Transverse cross sectional schematic diagram；
Fig. 2 is a kind of facing upward for crosswind circulation internal heat type tunnel purity nitrogen protection annealing furnace that the utility model embodiment provides
View.
Embodiment
Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is carried out clearly and completely
Description, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than whole embodiments.Base
Embodiment in the utility model, the institute that those of ordinary skill in the art are obtained under the premise of creative work is not made
There is other embodiment, belong to the scope of the utility model protection.
As Figure 1-Figure 2, a kind of crosswind proposed for the utility model embodiment circulates the purity nitrogen protection of internal heat type tunnel
Annealing furnace, including a stainless steel Muffle pot 3 laterally set, circle insulation is coated with the outer middle side part of stainless steel Muffle pot 3
Layer 5, the bosom of stainless steel Muffle pot 3 is placed with heated workpiece 6, and the both sides for being heated workpiece 6 are arranged with adiabatic gear
Plate 4；The bottom of stainless steel Muffle pot 3 is provided with opening, passes through adiabatic wall outside blower fan 17 on the outside of the bottom opening of stainless steel Muffle pot 3
Surround and form a cavity, it is longitudinally asymmetric in cavity to be disposed with adiabatic wall 10 in the left inside adiabatic wall 16 of blower fan and the blower fan right side, blower fan
The lower section of adiabatic wall 10 is longitudinally provided with left heated sealed pipe 15 and right heated sealed respectively in left inside adiabatic wall 16 and the blower fan right side
Pipe 11.
Further, water cooled seal axle 14 is installed outside blower fan among the bottom of adiabatic wall 17, water cooled seal axle 14
Upper end is provided with heat resistant centrifugal fan 12, lower end connection external motors 13, and heat resistant centrifugal fan 12 is located at the left He of heated sealed pipe 15
Between right heated sealed pipe 11；In the left inside adiabatic wall 16 of blower fan and the blower fan right side adiabatic wall 10 respectively with the inwall of adiabatic wall outside blower fan 17
Between form the left outlet 18 of hot blast and the right outlet 9 of hot blast, also set between adiabatic wall 10 in the left inside adiabatic wall 16 of blower fan and the blower fan right side
There is a return air inlet, the left outlet 18 of the hot blast in cavity, hot blast right outlet 9, return air inlet and stainless steel Muffle pot 3 are internally formed thermal current
Circulation air path.
In specific implementation process, the left and right both ends of stainless steel Muffle pot 3 are also equipped with sealing flange cover 1, sealing flange
The junction of lid 1 and stainless steel Muffle pot 3 is provided with sealing ring 2.
In order to monitor the temperature in stainless steel Muffle pot 3 in real time, prevent internal temperature from exceeding preset temperature threshold value, avoid heat
Amount aggregation, internal temperature is uneven, produces burn-off phenomenon, by the inside of stainless steel Muffle pot 3 and close to heated workpiece
Position is provided with the temperature measuring point of temperature control thermocouple 7, can avoid the generation of this problem.
It is a kind of optional or be preferably carried out mode as the utility model, the temperature measuring point of temperature control thermocouple 7 be used to detect and
Control close to the temperature of heated workpiece in stove, temperature control thermocouple 7 also forms closed loop with temperature control instrument and heater, to control
Furnace temperature reaches required temperature.
Preferably, heat-insulation layer 5 is arranged on the outer middle side part of stainless steel Muffle pot 3, and both ends extend at least past adiabatic gear
Plate 4, the purpose so done are, while ensureing that the internal heat of stainless steel Muffle pot 3 will not scatter and disappear, reduce thermal insulating material as far as possible
The dosage of material, reduce production cost.
In real work, the workpiece after annealing for convenience takes out out of tank body, designs at least one in insulating barrier 4
It is individual to be moved left and right along the inwall of stainless steel Muffle pot 3 or pull, in order to workpiece shove charge and come out of the stove.
Further, the rear and front end of adiabatic wall 10 and the outer adiabatic wall 17 of blower fan in the left inside adiabatic wall 16 of blower fan and the blower fan right side
Inwall connection.
Compared with prior art, the utility model at least has advantages below：
By above-mentioned the technical solution of the utility model, apply the circulation of blower fan forced gas, by the heat transfer type of workpiece by
Contact conduction heat transfer is changed to convection heat transfer' heat-transfer by convection mode, and hot gas flow speed quickly, makes heat transfer efficiency be substantially reduced while raising
The internal-external temperature difference of workpiece；Internal heat type heating, the flowing of high-speed fan forced gas, thermal current are changed to as a result of by external-heat
Cycle-index within the workpiece is very high, and local hot gas passes the electric thermo-couple temperature at workpiece position up to hundreds of circulations per minute
The reaction time is very short between sensor and executing agency's heater, almost without thermal inertia, makes the temperature control of workpiece very accurate,
Greatly reduce the generation that workpiece overheat overtemperature is scrapped；Two hot air outlets from workpiece both sides, while to inside workpiece side
Heated to forced flow, improve even temperature effect, cycling hot air flow duct is located on the outside of body of heater, the smaller easily design of windage, no
Take the height space of Muffle tank body.
The utility model really using internal heat type and is forced to carry out purity nitrogen protection gas heating by the way of crosswind circulation, with
Reach the purpose that workpiece uniformly heats, can reach reduces workpiece internal-external temperature difference, improves the annealing quality of workpiece, improves magnetic core element
Annealing efficiency technique effect, this equipment is also applied for the technological requirement of the continuous magnetic anneal of workpiece step-by-step movement, expands simultaneously
Big application.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should
It is defined by the protection domain of claims.
Claims (7)
1. a kind of crosswind circulation internal heat type tunnel purity nitrogen protection annealing furnace, including a stainless steel Muffle pot laterally set, it is special
Sign is：A circle heat-insulation layer is coated with the outer middle side part of the stainless steel Muffle pot, the bosom of stainless steel Muffle pot is put
Heated workpiece is equipped with, the both sides of the heated workpiece are arranged with insulating barrier；The bottom of the stainless steel Muffle pot is set
There is opening, surround to form a cavity by adiabatic wall outside blower fan on the outside of the bottom opening of stainless steel Muffle pot, in the cavity
It is longitudinally asymmetric to be disposed with adiabatic wall in the left inside adiabatic wall of blower fan and the blower fan right side, it is adiabatic in the left inside adiabatic wall of the blower fan and the blower fan right side
The lower section of wall is longitudinally provided with left heated sealed pipe and right heated sealed pipe respectively；Outside the blower fan among the bottom of adiabatic wall
Water cooled seal axle is installed, the upper end of the water cooled seal axle is provided with heat resistant centrifugal fan, and connection external motors in lower end are described resistance to
Hot centrifugal blower is between left heated sealed pipe and right heated sealed pipe；It is adiabatic in the left inside adiabatic wall of the blower fan and the blower fan right side
Wall forms the left outlet of hot blast and the right outlet of hot blast between adiabatic inner wall outside blower fan respectively, and the left inside adiabatic wall of blower fan and blower fan are right
Return air inlet is additionally provided between interior adiabatic wall, in the left outlet of the hot blast in cavity, the right outlet of hot blast, return air inlet and stainless steel Muffle pot
Portion forms thermal current circulation air path.
2. purity nitrogen protection annealing furnace in crosswind circulation internal heat type tunnel as claimed in claim 1, it is characterised in that：The stainless steel
The left and right both ends of Muffle pot are provided with sealing flange cover, and the junction of the sealing flange cover and stainless steel Muffle pot is provided with close
Seal.
3. purity nitrogen protection annealing furnace in crosswind circulation internal heat type tunnel as claimed in claim 1, it is characterised in that：The stainless steel
The inside of Muffle pot and it is provided with temperature control thermocouple temperature measurement point close to the position of heated workpiece.
4. purity nitrogen protection annealing furnace in crosswind circulation internal heat type tunnel as claimed in claim 3, it is characterised in that：The temperature control heat
The temperature measuring point of galvanic couple is used to detect and control in stove close to the temperature of heated workpiece, temperature control thermocouple also with temperature control instrument and plus
Hot device forms closed loop, so as to the temperature for controlling furnace temperature to reach required.
5. purity nitrogen protection annealing furnace in crosswind circulation internal heat type tunnel as claimed in claim 1, it is characterised in that：The heat-insulation layer
The outer middle side part of stainless steel Muffle pot is arranged on, and both ends extend at least past insulating barrier.
6. purity nitrogen protection annealing furnace in crosswind circulation internal heat type tunnel as claimed in claim 1, it is characterised in that：The adiabatic gear
At least one in plate can be moved left and right along stainless steel Muffle top tank structure or pull, in order to workpiece shove charge and come out of the stove.
7. purity nitrogen protection annealing furnace in crosswind circulation internal heat type tunnel as claimed in claim 1, it is characterised in that：The blower fan is left
The rear and front end of adiabatic wall is connected with the inwall of the outer adiabatic wall of blower fan in interior adiabatic wall and the blower fan right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720326232.5U CN206736302U (en) | 2017-03-30 | 2017-03-30 | A kind of crosswind circulation internal heat type tunnel purity nitrogen protection annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720326232.5U CN206736302U (en) | 2017-03-30 | 2017-03-30 | A kind of crosswind circulation internal heat type tunnel purity nitrogen protection annealing furnace |
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| CN206736302U true CN206736302U (en) | 2017-12-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107058693A (en) * | 2017-03-30 | 2017-08-18 | 北京郡北科磁性科技有限公司 | A kind of crosswind circulation internal heat type tunnel purity nitrogen protection annealing furnace |
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2017
- 2017-03-30 CN CN201720326232.5U patent/CN206736302U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107058693A (en) * | 2017-03-30 | 2017-08-18 | 北京郡北科磁性科技有限公司 | A kind of crosswind circulation internal heat type tunnel purity nitrogen protection annealing furnace |
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