CN102676756B - Tubular annealing furnace for magnetic heat treatment - Google Patents
Tubular annealing furnace for magnetic heat treatment Download PDFInfo
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- CN102676756B CN102676756B CN201210122976.7A CN201210122976A CN102676756B CN 102676756 B CN102676756 B CN 102676756B CN 201210122976 A CN201210122976 A CN 201210122976A CN 102676756 B CN102676756 B CN 102676756B
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- threaded pipe
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Abstract
The invention discloses a tubular annealing furnace for magnetic heat treatment. A furnace body comprises a threaded pipe, a resistance wire, a heat-insulation layer and a water-cooling device, wherein the threaded pipe is axially arranged along the furnace body, and an inner cavity of the threaded pipe is used for holding annealing parts or materials; the resistance wire wound on the outer wall of the threaded pipe is connected with a temperature controller and used for heating the threaded pipe; the heat-insulation layer is arranged on the periphery of the resistance wire and used for stopping heat loss of the threaded pipe and reducing heat radiation; and the water-cooling device is arranged on the periphery of the heat-insulation layer, has a hollow cylinder structure and is used for cooling the outer wall of the furnace body to enable the outer wall of the furnace body to be kept at a room temperature. Compared with the prior art, the tubular annealing furnace for magnetic heat treatment has the advantages that the tubular annealing furnace is ingenious in structural design, the furnace body is small in size and fine in heating effects, and the outer wall of the furnace body can be kept at the room temperature. The diameter of the inner cavity of the threaded pipe can be decreased to 5-7mm, the dimension of the heat-insulation layer can be decreased to 6-10mm, the outer diameter of the whole furnace body can be lower than 25mm, the temperature of the inner cavity of the threaded pipe can be higher than 80 DEG C, and accordingly the tubular annealing furnace has a wide application prospect in the technical field of magnetic heat treatment.
Description
Technical field
The present invention relates to a kind of thermal treatment unit, be specifically related to a kind of undersized thermomagnetic treatment tubular annealing stove.
Background technology
Annealing is a kind of material to be placed in to high temperature after for some time, more cooling heat treatment process slowly.For some, prepare the material into amorphous, annealing can make its crystallization and improve tissue topography, especially under magnetic field, anneals, i.e. magnetic-field annealing, can promote its crystallization, applies magnetic field and can also make preferable grain orientation in crystal growth process.When the high-intensity magnetic field of magnetic-field annealing is provided by permanent magnet, very little for placing the space of annealing body of heater in permanent magnet, because the aperture of permanent magnet is less, the magnetic field of generation is just stronger.This has just proposed restriction to the size of annealing furnace, and while requiring in addition annealing furnace heating, furnace body outer wall must maintain room temperature to avoid permanent magnet to be heated.Therefore, design a kind of size annealing furnace little and that have a good effect of heat insulation and will have actual application value, especially the application under less space is very significant.
Summary of the invention
Technical purpose of the present invention is the specific demand to annealing body of heater during for above-mentioned magnetic-field annealing, and when providing that a kind of body of heater size is little, heats good and heating, furnace body outer wall can maintain the annealing tube furnace of room temperature.
The present invention realizes the technical scheme that above-mentioned technical purpose adopts: a kind of thermomagnetic treatment tubular annealing stove, comprises body of heater, cooling water tank and temperature controller; Described body of heater comprises threaded pipe, resistance wire, thermal insulation layer and water cooling plant;
Described threaded pipe is placed along body of heater axis, and its tube cavity body is used for placing annealing part or material;
Described resistance wire is wrapped on threaded pipe outer wall, and resistance wire is connected with temperature controller, for heating threaded pipe; Threaded pipe inner chamber body temperature is detected by thermopair, and thermopair one end is connected with temperature controller, by temperature controller, is controlled and is made tube cavity temperature reach preset temp;
Described thermal insulation layer arranges resistance wire periphery, for stoping threaded pipe heat loss and reducing thermal radiation;
Described water cooling plant is one to be arranged on the hollow cylinder structure of thermal insulation layer periphery, by cooling water inlet, is connected with cooling water tank with cooling water outlet, for cooling furnace body outer wall, makes it maintain room temperature;
Described thermal insulation layer is preferably comprised of thermofin and thermoscreen two portions, and thermofin is glass fibre, and thermoscreen is masking foil, to stop heat loss and to reduce thermal radiation.
In order to improve heating efficiency, described threaded pipe is preferably made by transparent material.While adopting the threaded pipe that this transparent material makes, can effectively increase the heating of thermal radiation double thread tube cavity body, make temperature in cavity at least reach 800 ℃, thereby can effectively improve the heating efficiency to annealing part or material.
First part to be annealed or material can be processed through vacuum sealing tube, then put into threaded pipe inner chamber body and carry out anneal; Also threaded pipe directly can be connected with vacuum apparatus, thereby part to be annealed or material that double thread tube cavity body is placed carry out the annealing under vacuum condition.
The diameter of described threaded pipe inner chamber body can be down to 5～7mm; Insulation layer thickness is preferably 6～10mm, more preferably 8mm; The external diameter of whole body of heater is no more than 25mm.
In sum, compared with prior art, the invention provides a kind of thermomagnetic treatment has following breakthrough with tubular annealing stove and accessory:
(1) in prior art, in the time of need to keeping the problem of room temperature in order to take into account body of heater heats and furnace body outer wall, the general method that increases insulation layer thickness that adopts, still this method causes insulation layer thickness larger, thereby be difficult to realize body of heater small size, make its application limited.And the present invention adopts threaded pipe, resistance wire, thermal insulation layer and water cooling plant to combine, by structure design and material are selected cleverly, at annealing furnace outside dimension, be subject in limited time, can guarantee heats on the one hand, its threaded pipe inner chamber body temperature can be higher than 800 ℃, can guarantee that on the other hand furnace body outer wall maintains room temperature, can realize that in threaded pipe, sample space diameter is down to 5～7mm, thermal insulation layer is of a size of 6～10mm simultaneously, whole body of heater external diameter, lower than the small scale structures of 25mm, has met its practical application request.
(2) Heating temperature of whole body of heater is controlled, operation is simple;
Therefore, thermomagnetic treatment of the present invention has with tubular annealing stove and accessory that body of heater size is little, heats good, and furnace body outer wall can keep the advantage of room temperature simultaneously, in thermomagnetic treatment technical field, is with a wide range of applications.
Accompanying drawing explanation
Fig. 1 is the axial cross section structural representation of the body of heater of tubular annealing stove for thermomagnetic treatment of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail, it is pointed out that the following stated embodiment is intended to be convenient to the understanding of the present invention, and it is not played to any restriction effect.
As shown in Figure 1, thermomagnetic treatment comprises body of heater 1, cooling water tank (not comprising in Fig. 1) and temperature controller (not comprising in Fig. 1) with tubular annealing stove.Described body of heater 1 comprises the threaded pipe 2 placed along body of heater axis, be wrapped on threaded pipe 2 outer walls for heating the resistance wire 3 of this threaded pipe 2, and resistance wire 3 peripheries arrange thermal insulation layer 4, and thermal insulation layer 4 peripheries arrange water cooling plant 5.
Threaded pipe 2 is that the transparent material of 2 entire bodies is made, and the tube cavity body of threaded pipe 2 is used for placing annealing part or material.Resistance wire 3 is connected with wire by ceramic plate, and wire is received on temperature controller, for heating threaded pipe 2.Thermopair one end is placed in the tube cavity body of threaded pipe 2, and the other end is received on temperature controller, and control tube inner chamber body temperature reaches preset temp.The peripheral coated thermal insulation layer 4 of resistance wire is comprised of thermofin and thermoscreen two portions, and thermofin is glass fibre, and thermoscreen is masking foil, to stop, heats the heat loss of threaded pipe 2 and reduces external thermal radiation.The peripheral water cooling plant 5 arranging of thermal insulation layer 4 is hollow tube-shape structures, by cooling water inlet 6, is connected with cooling water tank with cooling water outlet 7, for the outer wall of cooling body of heater 1, makes it maintain room temperature;
While utilizing this tubular annealing stove to carry out anneal to anneal part or material, first packaged annealing part or material are packed in the tube cavity body of threaded pipe 2, then check whether resistance wire 3, thermocouple connect, check after errorless and open cooling water tank, open again temperature controller programmed and heat, finally carry out cooling.After finishing using, take out annealing part or material, first close temperature controller, then close cooling water tank.
Above-described embodiment has been described in detail technical scheme of the present invention; be understood that and the foregoing is only specific embodiments of the invention; be not limited to the present invention; all any modifications of making within the scope of principle of the present invention, supplement or similar fashion substitutes etc., within all should being included in protection scope of the present invention.
Claims (2)
1. a thermomagnetic treatment tubular annealing stove, annealing magnetic field is provided by permanent magnet, comprise body of heater (1), cooling water tank and temperature controller, it is characterized in that: described body of heater (1) comprises threaded pipe (2), resistance wire (3), thermal insulation layer (4) and water cooling plant (5), and the external diameter of described body of heater (1) is no more than 25mm;
Described threaded pipe (2) is placed along the axis of body of heater (1); Described threaded pipe (2) is to be made by transparent material, and its tube cavity body is used for placing annealing part or material;
Described resistance wire (3) is wrapped on the outer wall of threaded pipe (2), is connected, for heating threaded pipe (2) with temperature controller; Threaded pipe inner chamber body temperature is detected by thermopair, and thermopair one end is connected with temperature controller, by temperature controller, is controlled and is made tube cavity temperature reach preset temp;
Described thermal insulation layer (4) arranges resistance wire (3) periphery, for stoping the heat loss of threaded pipe (2) and reducing thermal radiation, thermofin and thermoscreen two portions, consists of, and thermofin is glass fibre, and thermoscreen is masking foil;
Described water cooling plant (5) is one to be arranged on the peripheral hollow cylinder structure of thermal insulation layer (4), by cooling water inlet (6), is connected with cooling water tank with cooling water outlet (7), for cooling body of heater (1) outer wall, makes it maintain room temperature; The diameter of the tube cavity body of described threaded pipe (2) is 5～7mm, and insulation layer thickness is 6～10mm.
2. thermomagnetic treatment according to claim 1 tubular annealing stove, is characterized in that: described threaded pipe (2) is connected with vacuum apparatus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210122976.7A CN102676756B (en) | 2012-04-24 | 2012-04-24 | Tubular annealing furnace for magnetic heat treatment |
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| CN201210122976.7A CN102676756B (en) | 2012-04-24 | 2012-04-24 | Tubular annealing furnace for magnetic heat treatment |
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| CN102676756A CN102676756A (en) | 2012-09-19 |
| CN102676756B true CN102676756B (en) | 2014-03-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103322816B (en) * | 2013-05-22 | 2015-03-25 | 宋玉军 | Multifunctional efficient tube type heating device |
| CN107365896B (en) * | 2016-05-12 | 2019-04-23 | 天津海鸥表业集团有限公司 | Hearth of vertical tank type vacuum tempering furnace |
| CN106521100A (en) * | 2016-12-06 | 2017-03-22 | 内蒙古科技大学 | Magnetic field annealing furnace experimental apparatus |
| CN109334054A (en) * | 2018-12-18 | 2019-02-15 | 南京肯特复合材料股份有限公司 | PEEK anneal of material method |
| CN110118679A (en) * | 2019-04-30 | 2019-08-13 | 西北工业大学 | A kind of temperature is up to 1600 DEG C of magnetic field material processing unit |
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| CN101881555B (en) * | 2010-06-22 | 2011-10-05 | 武汉科技大学 | High-temperature atmosphere furnace with electromagnetic field |
| CN202643760U (en) * | 2012-04-24 | 2013-01-02 | 中国科学院宁波材料技术与工程研究所 | Tubular annealing furnace used for magnetic heat treatment |
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