CN201411479Y - Compulsory convection device for titanium coil annealing in horizontal vacuum annealing furnace - Google Patents
Compulsory convection device for titanium coil annealing in horizontal vacuum annealing furnace Download PDFInfo
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- CN201411479Y CN201411479Y CN2009203046571U CN200920304657U CN201411479Y CN 201411479 Y CN201411479 Y CN 201411479Y CN 2009203046571 U CN2009203046571 U CN 2009203046571U CN 200920304657 U CN200920304657 U CN 200920304657U CN 201411479 Y CN201411479 Y CN 201411479Y
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- annealing furnace
- vacuum annealing
- horizontal vacuum
- titanium
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Abstract
The utility model discloses a compulsory convection device for titanium coil annealing in a horizontal vacuum annealing furnace. An inflating system communicating with the external inert gas is arranged on the furnace wall of the horizontal vacuum annealing furnace and is divided into two paths, in which one path is a main inflating system equipped with a backfill valve; and the other path is a micro inflating system equipped with a charge valve, a micro flow regulating valve and a pressure gauge. An impeller driven by a stirring device is arranged above the core of the titanium coil in the horizontal vacuum annealing furnace. The inflating system of the utility model charges the inert gas in the vacuum annealing furnace; the inert gas is circulated in the furnace through the stirring by the impeller above the core of the titanium coil; thereby the inner and outer circles of the titanium coil are uniformly heated; the temperature difference between the inner and outer circles are greatly reduced and the organization and performance of the inner and outer circles of the titanium coil reach consistence so as to improve the product quality after annealing, greatly shorten the heatingtime and reduce the production cost and the energy consumption.
Description
Technical field
The utility model relates to and is used for titanium and is rolled into forced convection device in the product annealed horizontal vacuum annealing furnace.
Background technology
Because the chemical property of titanium is active, at high temperature react with elements such as airborne O, N, H easily, form pollution layer on the surface, make the degradation of alloy, intensity and plasticity reduce, and hardness increases, and has a strong impact on following process and use.Therefore the annealing of titanium volume adopts vacuum furnace to carry out more at present.But the heating unit of existing vacuum annealing heating mainly is installed on the furnace shell, cause near the titanium volume outer ring heat-up rate of furnace shell fast, the temperature height, but because the thermal conductivity of titanium is relatively poor, its thermal conductivity has only 0.041J/ (cmsK), (cmsK is much lower, causes that the titanium volume Internal and external cycle temperature difference is big, heat-up time is longer than the thermal conductivity 0.934J/ of copper; The performance of material is seriously uneven after the vacuum annealing.For the temperature that makes titanium volume inner ring reaches processing requirement, must under higher temperature, be incubated for a long time, and the outer ring just is under the condition of high temperature for a long time, inner grain growth causes the Internal and external cycle tissue to differ bigger, the performance inequality.The difference of grain fineness number of Internal and external cycle that adopts at present the titanium volume that vacuum annealing furnace handles is at 30 ~ 200 μ m, the difference of intensity between 20 ~ 50MPa, to subsequent material use and processing brings adverse influence
The utility model content
The purpose of this utility model is to overcome the existing above shortcoming of vacuum furnace, provide a kind of and make titanium volume Internal and external cycle homogeneous heating, can shorten heat-up time, improve rate of heating, improve annealing quality, the forced convection device in the horizontal vacuum annealing furnace that cuts down the consumption of energy.
Technology technical scheme of the present utility model is: be provided with the inflation system that is communicated with external inert gas on the furnace wall of horizontal vacuum annealing furnace, inflation system is divided into two the tunnel, one the tunnel is the main gas charge system that the backfill valve is housed, another is that inflation valve, micrometeor variable valve, manometric little inflation system are housed, in the horizontal vacuum annealing furnace titanium volume volume heart above be provided with the impeller that drives by whipping appts.
The quantity of described whipping appts is identical with the volume number of titanium volume in the stove.
Described micrometeor variable valve regulate automatically furnace pressure-10kPa～-micro-vacuum state of 5kPa.
Described impeller is axial-flow type or Jiao Ban Shi Knot structure.
Described rare gas element is argon gas or helium.
Inflation system of the present utility model charges into rare gas element in vacuum annealing furnace, rolling up in the heart by titanium again, the stirring of quadrate lope wheel makes rare gas element at the stove internal recycle, can make titanium volume Internal and external cycle realize even heating, the temperature difference of Internal and external cycle is reduced greatly, the tissue and the performance of titanium volume Internal and external cycle are reached unanimity, improved the quality of annealing back product, also shorten heat-up time greatly, reduced production cost and energy consumption.
Description of drawings
Accompanying drawing is the structural representation of the utility model one embodiment.
Embodiment
Embodiment:
The furnace wall 2 of horizontal vacuum annealing furnace 1 is provided with the inflation system that is communicated with outside argon tanks 3, inflation system is divided into two the tunnel, one the tunnel is the A of main gas charge system that backfill valve 4 is housed, another is little inflation system B that inflation valve 5, micrometeor variable valve 6, tensimeter 7 are housed, in the horizontal vacuum annealing furnace titanium volume volume heart 8 above be provided with the impeller 10 that drives by whipping appts 9, the volume number that titanium is rolled up in the quantity of described whipping appts and the stove is identical.
During use, elder generation packs the titanium volume volume heart into behind the stove, the body of heater pumping high vacuum, under high vacuum state, be heated to 400 ℃ on the low temperature platform of setting with certain speed, close vacuum-pumping system, open backfill valve 4, in stove, charge into dry high-purity Ar gas, and with the pressure controller that the backfill valve carries the gas backfill pressure is set, the backfill valve will cut out automatically when furnace pressure is raised to setting pressure-0.03MPa.Open whipping appts 9, Ar gas is circulated in stove, and, the temperature of Internal and external cycle is reached unanimity in the low temperature platform insulation regular hour.
Behind the insulation 4h, continue heating, rising along with temperature, pressure in the stove also constantly increases, in order to guarantee that furnace pressure maintains little negative pressure atmosphere state, workpiece continues to be heated to 630 ℃ by predetermined curve under little negative pressure atmosphere state, in heating and insulating process, open inflation valve all the time, micrometeor variable valve and whipping appts, little inflation system regulate automatically furnace pressure-10kPa～-micro-vacuum state of 5kPa (gauge pressure), impeller 10 rotations of the top by being installed in the titanium volume volume heart 8 circulate Ar gas in stove, the insulation regular hour, the temperature of Internal and external cycle is reached unanimity the temperature of titanium volume in the stove is reached unanimity.Insulation is closed heating system after finishing, and cooling is come out of the stove.After annealing was finished, the grain fineness number of titanium volume Internal and external cycle differed 20 μ m, and the difference of intensity is at 15MPa, and the tissue and the performance of not carrying out process gas forced convection round-robin titanium volume are even.
Claims (4)
1. one kind is used for the interior forced convection device of titanium volume annealed horizontal vacuum annealing furnace, it is characterized in that, on the furnace wall of horizontal vacuum annealing furnace, be provided with the inflation system that is communicated with external inert gas, inflation system is divided into two the tunnel, one the tunnel is the main gas charge system that the backfill valve is housed, another is that inflation valve, micrometeor variable valve, manometric little inflation system are housed, in the horizontal vacuum annealing furnace titanium volume volume heart above be provided with the impeller that drives by whipping appts.
2. the forced convection device that is used in the titanium volume annealed horizontal vacuum annealing furnace according to claim 1 is characterized in that the quantity of described whipping appts is identical with the volume number of titanium volume in the stove.
3. the forced convection device that is used in the titanium volume annealed horizontal vacuum annealing furnace according to claim 1 is characterized in that described impeller is axial-flow type or Jiao Ban Shi Knot structure.
4. the forced convection device that is used in the titanium volume annealed horizontal vacuum annealing furnace according to claim 1 is characterized in that described rare gas element is argon gas or helium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203046571U CN201411479Y (en) | 2009-06-18 | 2009-06-18 | Compulsory convection device for titanium coil annealing in horizontal vacuum annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203046571U CN201411479Y (en) | 2009-06-18 | 2009-06-18 | Compulsory convection device for titanium coil annealing in horizontal vacuum annealing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201411479Y true CN201411479Y (en) | 2010-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203046571U Expired - Lifetime CN201411479Y (en) | 2009-06-18 | 2009-06-18 | Compulsory convection device for titanium coil annealing in horizontal vacuum annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201411479Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896186A (en) * | 2011-07-26 | 2013-01-30 | 张家港华裕有色金属材料有限公司 | Method and device for finishing and shaping titanium-titanium alloy U-shaped elbow pipe |
| CN102899472A (en) * | 2011-07-26 | 2013-01-30 | 张家港华裕有色金属材料有限公司 | Titanium and titanium alloy U-shaped bend vacuum heat treatment method and apparatus thereof |
| CN103589853A (en) * | 2013-11-08 | 2014-02-19 | 中冶南方(武汉)威仕工业炉有限公司 | Horizontal continuous annealing furnace for annealing titanium belt and steel belt |
-
2009
- 2009-06-18 CN CN2009203046571U patent/CN201411479Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896186A (en) * | 2011-07-26 | 2013-01-30 | 张家港华裕有色金属材料有限公司 | Method and device for finishing and shaping titanium-titanium alloy U-shaped elbow pipe |
| CN102899472A (en) * | 2011-07-26 | 2013-01-30 | 张家港华裕有色金属材料有限公司 | Titanium and titanium alloy U-shaped bend vacuum heat treatment method and apparatus thereof |
| CN102896186B (en) * | 2011-07-26 | 2016-05-25 | 张家港华裕有色金属材料有限公司 | Method and the device thereof of the U-shaped bend pipe finishing sizing of titanium or titanium alloy |
| CN103589853A (en) * | 2013-11-08 | 2014-02-19 | 中冶南方(武汉)威仕工业炉有限公司 | Horizontal continuous annealing furnace for annealing titanium belt and steel belt |
| CN103589853B (en) * | 2013-11-08 | 2016-03-16 | 中冶南方(武汉)威仕工业炉有限公司 | Horizontal continuous annealing furnace for annealing titanium belt and steel belt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 410205 Hunan province Changsha high tech Industrial Development Zone Lugu Industrial Garden Road No. 116. Patentee after: Hunan Jintian titanium Hunan Investment Limited by Share Ltd Address before: 410007 building C, 22 floor, North building, 359 days, Furong Road, section two, Furong Road, Changsha, Hunan Patentee before: Hunan Xiangtou Jintian Titanium Metal Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100224 |
|
| CX01 | Expiry of patent term |