CN1289697C - Thermal shield apparatus for vertical continuous annealing furnace - Google Patents
Thermal shield apparatus for vertical continuous annealing furnace Download PDFInfo
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- CN1289697C CN1289697C CN 01111473 CN01111473A CN1289697C CN 1289697 C CN1289697 C CN 1289697C CN 01111473 CN01111473 CN 01111473 CN 01111473 A CN01111473 A CN 01111473A CN 1289697 C CN1289697 C CN 1289697C
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- roller
- twin wall
- wall emitter
- emitter lateral
- thermal shield
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Abstract
The present invention relates to a thermal shield apparatus for preventing a heating source arranged in a vertical continuous annealing furnace, which comprises a double-wall tube, wherein the double-wall tube is provided with an outside gas suction inlet and an exhaust outlet; the outside gas suction inlet is provided with a horizontal prominence or a downward prominence so that the outside gas suction inlet is exposed outside the gas; and the exhaust outlet is upwards protruded so that the exhaust port is exposed outside the gas.
Description
Technical field
The present invention relates to the thermal shield apparatus of the vertical continuous annealing furnace of in continuous transferring metal band, sheet metal strip being heat-treated.
Background technology
In recent years, mainly make behind the cold rolling of strip steel recrystallize and give the annealing process of the good workability of band steel by continuous annealing rather than batch annealing.As a kind of continuous annealing furnace that carries out continuous annealing, known and therein the band that moves along a horizontal channel has been carried out annealed horizontal continuous annealing furnace and be provided with many rollers and the band that moves along a vertical channel is carried out the annealed vertical continuous annealing furnace at its top and bottom.In these continuous annealing furnaces, vertical heater is to move the mass-produced method that (pushing through) speed realizes more favourable by improving band.
At present, the indirect type heating of employing radiator tube is very general as the heating source of vertical continuous annealing furnace, and mainly is used to come the heating zone steel from the radiant heat of heating source.
Be provided with many rollers in the top of stove and bottom therein and the band steel of transferring along the roller vertical direction is carried out in the annealed vertical continuous annealing furnace, otherwise when travel direction because of the band steel walk around each roller from upwards transfer to downwards or the time, prevent strip running deviation or rail and guaranteeing with steel partially stably by being very important.Usually, as shown in figure 11, each roller 12 that is arranged in the stove is designed to have the convex roller convex surface of roller shoulder to the roller end convergent.This design is in order to make the band steel so pass through stove, promptly with steel always by one act on the band centering force (arrow F) and in the alignment roller heart move, this power according to the band angle of the band on its tapered portion from the centering motion and be pressed in the convergent portion on along the roller edge to the direction at roller center.
But as shown in figure 12, not only heated band steel 10 from the radiant heat that is arranged on the heating source (for example radiator tube) 14 in the stove, and heated the roller 12 that is arranged in the stove.Therefore, the actual convexity that is arranged on the roller in the stove is that to give convexity (the being called hot convexity) sum of roller definite by the convexity of giving roller at first (being called original convexity) with because of the radiant heat of heating source.As a result, when belt steel temperature was lower than roller temperature and hot convexity greater than original convexity, the temperature of roller central part reduces relatively and roll crown presents spill shown in the solid line of Figure 12.If band steel 10 process above roller 12 with this spill convexity, then power mind-set roller edge action from roller that results from the strip width direction.Thereby, in case the band steel has run into sideslip or rail partially, then be with steel to be forced to surpass it and be pressed on the roller edge at once, this band steel by the time brought the trouble of band steel contact furnace wall.
In order to tackle this difficult problem, someone has proposed some strategies and has prevented that the roller temperature from surpassing strip temperature, therefore, as described in the Japanese unexamined utility model application publication number 63-119661, the past has the people to propose a shielding slab to stop heat by heating source 14 radiation direction rollers 12.In addition, Japanese unexamined patent publication number 57-79123 has disclosed a kind of employing wherein fluidizing air, nitrogen etc. has carried out the shielding unit of refrigerative heat-resistant tube.
In addition, in view of having only shielding slab to be not enough to reduce hot convexity, Japanese unexamined patent publication number 52-71318 has disclosed a kind of pair roller shower cooling gas so that control the technology of hot convexity energetically.In addition, for same purpose, Japanese unexamined patent publication number 53-119208 has described a kind of technology of using the water chill rolls edge part or change heat conductance between roller central part and roller edge part.In addition, Japanese unexamined patent publication number 53-130210 and Japan authorization patent publication No. 57-23733 have disclosed with roller a technology that forms the device of coolant flow channel have been set dividually.
In the example of above-mentioned these correlation techniques, the technology of hot convexity that reduces to give roller energetically is for preventing that the band sideslip from being effectively, but they have the problem of facility investment that need be very high.Another problem is exactly, because the increase of the size of device own, so must improve the thermal capacity of device, this makes the unit burnup of heating zone impaired.
Formulated the present invention for the problems referred to above that overcome correlation technique.An object of the present invention is to provide a kind of cost low and more effective device on the basis of employing as the radiant heat shielding unit of the described cooling tube of above-mentioned Japanese unexamined patent publication number 57-79123.
Summary of the invention
To achieve these goals, the present invention proposes a kind of radiant heat shielding unit that is used for vertical continuous annealing furnace, wherein many rollers are placed in the upper and lower of stove, and the sheet metal strip that is transmitted continuously by roller is heat-treated.Walk around because of sheet metal strip each roller from upwards become downwards or from become downwards up change the band travel direction in, band is by the roller vertical transport.The radiant heat shielding unit be positioned in the below of the roller in the stove top and/or the roller in lower furnace above so that stop from the radiant heat that is arranged on the heating source in the stove.Described radiant heat shielding unit preferably be set in place roller in stove top under and/or the roller in lower furnace directly over.Described radiant heat shielding unit comprises a twin wall emitter lateral, this twin wall emitter lateral comprises pipe and an outer tube in one, should in pipe to have level outstanding or outstanding downwards so that be exposed to ambient atmos suction inlet in the ambient atmos, this outer tube has and projects upwards so that be exposed to venting port in the ambient atmos.
In the radiant heat shielding unit, the outer diameter D of the outer tube of twin wall emitter lateral is preferably about more than 60 millimeters, the ambient atmos suction inlet of twin wall emitter lateral and the height difference H between the venting port are about more than 150 millimeters, the outer diameter D of the outer tube of twin wall emitter lateral (unit: meter) and height difference H (unit: rice) satisfy following the relation:
In addition, according to the present invention, the embodiment of some radiant heat shielding units comprises many above-mentioned twin wall emitter laterals.These twin wall emitter laterals be horizontally set on roller in the stove top under and/or the roller in lower furnace directly over.
Perhaps, in certain embodiments, the radiant heat shielding unit comprises one or more above-mentioned twin wall emitter laterals, and described twin wall emitter lateral is used as support tube, and a shielding slab links to each other with described support tube.
The present invention also provides:
(1) a kind of vertical continuous annealing furnace, it comprises:
The upper and lower part;
Many the rollers that are arranged in the upper and lower part;
Wherein walk around because of sheet metal strip each roller from upwards become downwards or from become downwards up change the band travel direction in, to heat-treating by the described sheet metal strip of the continuous vertical transport of roller;
One be arranged on roller in this stove top under and/or the roller in this lower furnace directly over thermal shield apparatus, this thermal shield apparatus comprises:
At least one twin wall emitter lateral, each twin wall emitter lateral comprises:
Level is outstanding or outstanding downwards so that be exposed to ambient atmos suction inlet in the ambient atmos; With
One projects upwards so that be exposed to venting port in the ambient atmos.
(2) as (1) described vertical continuous annealing furnace, wherein each twin wall emitter lateral comprises pipe and an outer tube in one, should in pipe to have level outstanding or outstanding downwards so that be exposed to ambient atmos suction inlet in the ambient atmos, this outer tube has and projects upwards so that be exposed to venting port in the ambient atmos.
(3) as (2) described vertical continuous annealing furnace, wherein the outer tube of each twin wall emitter lateral has the outer diameter D more than 60 millimeters, the ambient atmos suction inlet and the height difference H between the venting port of each twin wall emitter lateral are more than 150 millimeters, and the outer diameter D of the outer tube of each twin wall emitter lateral and the satisfied following relation of height difference H:
(4) as the described vertical continuous annealing furnace in (1)-(3), wherein this device comprises many twin wall emitter laterals, these twin wall emitter laterals flatly be arranged on roller in the stove top under and/or the roller in lower furnace directly over.
(5) as the described vertical continuous annealing furnace in (1)-(3), wherein this device comprises at least one twin wall emitter lateral, and each twin wall emitter lateral is used as a support tube, and a shielding slab links to each other with each support tube.
Description of drawings
Fig. 1 is the vertical cross-section diagram of the structure of the used twin wall emitter lateral of expression radiant heat shielding unit first embodiment of the present invention.
Fig. 2 comprises side-view and front view, and they show the layout of the traditional embodiment that adopts one flat plate, the layout of Comparative Examples that adopts Dan Lengguan and the layout of first embodiment that adopts the cooling tube of twin wall emitter lateral form of the present invention contrastively.
Fig. 3 represents the surface temperature of outer tube of cooling gas flow velocity (Q) and each twin wall emitter lateral and the figure of the relation between the dull and stereotyped surface temperature contrastively, so that explain principle of work of the present invention.
Fig. 4 is the figure that concerns between the roller temperature difference (Δ T) on expression cooling gas flow velocity, the strip width direction and the band deviation phenomenon.
Fig. 5 be expression cooling gas flow velocity and difference of altitude (H) square root and outer external diameter of pipe (D) square the figure of relation of product.
Fig. 6 is the figure of relation between expression difference of altitude (H) and the cooling gas flow velocity (Q).
Fig. 7 is the side-view of structure of second embodiment of expression radiant heat shielding unit of the present invention.
Fig. 8 is the side-view of structure of the 3rd embodiment of expression radiant heat shielding unit of the present invention.
Fig. 9 is illustrated in to adopt the figure that occurs the frequency of sideslip among dull and stereotyped traditional embodiment, the Comparative Examples that adopts Dan Lengguan and the present invention contrastively.
Figure 10 is illustrated in the figure that changes the frequency of radiant heat shielding unit among traditional embodiment, Comparative Examples and the present invention contrastively.
Figure 11 is that expression is arranged in the stove and front view that have the roller of convex roll crown.
To be expression be arranged on front view in the stove and state when giving the roller-belt material that its hot convexity has the convex roll crown by one to Figure 12.
Figure 13 is the synoptic diagram of annealing furnace with embodiment of radiant heat shielding unit of the present invention.
Embodiment
Below, referring to accompanying drawing embodiment of the present invention is described.
Radiant heat shielding unit of the present invention is set in place the below (preferably) of the roller in the top of vertical continuous annealing furnace and/or is positioned at the top (preferably) of the roller of lower furnace, so that block from the radiant heat that is arranged on the heating source in the stove, described thermal shield apparatus is parallel with roller almost.
In first embodiment of the present invention, as shown in Figure 1, the radiant heat shielding unit has twin wall emitter lateral 20 formula structures, it comprises that one has one and outstandingly downwards has one and project upwards so that be exposed at the outer tube 24 of the venting port 25 in the ambient atmos so that be exposed at the interior pipe 22 of the ambient atmos suction inlet 23 in the ambient atmos and one.Utilize such structure, can realize cheaply by the natural convection that effectively utilizes ambient atmos (as air) and radiant heat shielding unit efficiently.
In addition, as to the result of experiment repeatedly of the relation between the high temperature resistant creep of flow velocity, radiant heat shield effectiveness and the twin wall emitter lateral of the cooling gas (air) that flows through twin wall emitter lateral 20, the inventor has found to be applicable to the condition and range of block radiation heat, wherein the outer diameter D of the outer tube 24 of twin wall emitter lateral 20 is about more than 60 millimeters, height difference H (distance) between ambient atmos suction inlet 23 and the venting port 25 is about more than 150 millimeters, the outer diameter D of the outer tube 24 of twin wall emitter lateral (unit: meter) and height difference H (unit: rice) satisfy following formula (1):
Heat-resisting alloy steel is a kind of exemplary materials that forms twin wall emitter lateral 20 that is applicable to.For example, its Cr content is more than about 18% weight and Ni content is that above stainless steel of about 8% weight or the special steel with strong resistance toheat are preferable material.
The inventor finds, adopts the radiant heat shielding unit of traditional cooling tube (as described in Japanese unexamined patent publication number 57-79123) limited aspect the cooling power of the natural convection that utilizes ambient atmos (air).Japanese unexamined patent publication number 57-79123 has disclosed, and cooling air is forced into cooling tube by bleed gas blower or pressure blower.But provide in suction side when gas blower, gas blower suction high-temp waste gas, therefore, gas blower itself must be heat-stable or, the intake-gas refrigerating unit must be set in the gas blower upstream.In either case, all must improve equipment cost.On the other hand, when the applying pressure gas blower forces cooling air to flow into cooling tube, exist sheet metal strip (or band steel) is gone into oxidation in the stove because of the air leaking in the cooling tube danger.
According to above-mentioned discovery, the inventor has produced the radiant heat shielding unit with three kinds of structures shown in Figure 2, and those actual device are tested.
A traditional embodiment who has adopted the shielding slab 16 of single flat type is represented in the left side of Fig. 2.The piece of tape 10 of having drawn among the figure (generally being the band steel), one are placed in the roller 12 in the stove, a heating source 14 (generally being radiator tube).A Comparative Examples that adopts the cooling tube 18 of single double-walled straight tube form is represented at the center of Fig. 2.A first embodiment of the invention that becomes the cooling tube 20 of twin wall emitter lateral form shown in Figure 1 is represented to comprise in the right side of Fig. 2.
The figure of the experimental result that the surface temperature that Fig. 3 is expression by the surface temperature of the outer tube of each twin wall emitter lateral of cooling gas (air) velocity measurement that relatively records in the exhaust ports of each twin wall emitter lateral outer tube and one flat plate (in the face of being arranged on that side of the roller 12 in the stove) obtains, wherein surface temperature is represented by length axis, and flow velocity is represented by axis of abscissa.Measuring condition is to set like this, be that furnace temperature is 900 ℃, the temperature of ambient atmos (cooling gas) is 300 ℃, and the outer tube diameter of twin wall emitter lateral is 100 millimeters, the diameter of inner pipe of twin wall emitter lateral is 40 millimeters, and the ambient atmos suction inlet 23 and the height difference H between the venting port 25 of twin wall emitter lateral are 200 millimeters.
Adopting wherein to external world gas suction inlet and venting port not to do in the Comparative Examples of any improved cooling tube (double-walled list straight tube), shown in the △ of Fig. 3, cooling gas is little because of natural convection, and the outer tube surface temperature of twin wall emitter lateral has reached 800 ℃.
In traditional embodiment (adopting dull and stereotyped), shown in mark, the planar surface temperature has reached 860 ℃.
By contrast, twin wall emitter lateral has through improvement respectively downwards and projects upwards and be exposed in the first embodiment of the invention of ambient atmos suction inlet in the ambient atmos and venting port therein, and shown in the mark O of Fig. 3, the cooling gas flow velocity reaches 5.0 * 10
-3(Nm
3/ s), the surface temperature of outer tube is reduced to about 500 ℃.
Fig. 4 is illustrated in cooling gas (air) flow velocity that the exhaust ports of twin wall emitter lateral outer tube of the present invention records and the curve of the relation between the temperature difference T that forms on the strip width of thermometric roller upper edge.On the roller width be embedded in thermocouple measurement roller temperature in the roller and described thermopair be set at the radiant heat shielding unit that almost is parallel to roller directly over.Measuring condition is to set like this, and promptly roll body length is 2000 millimeters, and the width average that passes the band steel of stove is 1260 millimeters, and average furnace temperature is 900 ℃.In this article, temperature difference T is defined as Δ T=Te (at the roll surface temperature from 100 millimeters places, roller edge)-Tc (roll surface temperature at roller center).The minimum temperature difference Δ T that the curve display of Fig. 4, roll crown form spill and band steel generation sideslip is about 150 ℃, and the flow velocity that prevents the cooling gas that strip running deviation is required is 3.0 * 10
-3(Nm
3/ s) more than.
In above-mentioned first embodiment of the present invention, it is outstanding that the ambient atmos suction inlet becomes downwards as described above.But the ambient atmos suction inlet is not limited to such structure.The ambient atmos suction inlet can be given prominence on different orientation, and for example level is outstanding.
To have level outstanding or outstanding downwards and be exposed to ambient atmos suction inlet in the ambient atmos and one and project upwards and be exposed in the radiant heat shielding unit of the present invention of twin wall emitter lateral of the venting port in the outside air comprising one, and the chimneyeffect that forms the twin wall emitter lateral inner fluid from the ambient atmos suction inlet to venting port is used to satisfy the above-mentioned required flow rate of cooling gas.
According to the fluid mass law of conservation, cooling gas flow velocity Q (m
3/ s) determine by following formula:
Q＝Vg×π×(D/2)
2 (2)
Wherein, Vg is the cooling gas flow velocity (m/s) in exhaust ports, and D is the external diameter (m) of outer tube.
In addition, according to the fluid energy law of conservation, obtain by following formula at the cooling gas flow velocity (m/s) of exhaust ports:
Wherein, g is universal gravity constant (=9.8m/s
2), H is the ambient atmos suction inlet of twin wall emitter lateral and the difference of altitude (m) between the venting port.
Combinatorial formula (2) and (3) have obtained following formula:
According to formula (4), the outer diameter D of cooling gas flow velocity Q and outer tube is proportional, and it also and the square root of the ambient atmos suction inlet of twin wall emitter lateral and the height difference H between the venting port proportional.
Fig. 5 describes to represent the parameter shown in the axis of abscissa
With the cooling gas flow velocity Q (Nm shown in the length axis
3/ s) between the figure of measured data of relation.Shown in the curve of Fig. 5, need
So that satisfy about 3.0 * 10
-3(Nm
3/ s) above cooling gas required flow rate Q.In other words, in real work, furnace temperature is about about 500 ℃ to about 900 ℃ as everyone knows, and in the time of in stove is in this temperature range, the above cooling gas flow velocity of above-mentioned value is enough to obtain the ideal cooling performance.Therefore, if satisfied
, then can in actually operating, provide living sufficient cooling effect.
Fig. 6 is expression cooling gas flow velocity Q (Nm
3/ s) and the curve of the relation between the ambient atmos suction inlet of twin wall emitter lateral and the height difference H (mm) between the venting port.Shown in the curve of Fig. 6, if difference of altitude less than about 150 millimeters, then cooling gas is difficult to flow because of becoming on height difference H is in the basically level identical with the twin wall emitter lateral diameter.Therefore, the ambient atmos suction inlet of twin wall emitter lateral and the height difference H between the venting port are preferably set to about more than 150 millimeters.
In addition, if the external diameter of the outer tube of twin wall emitter lateral is little, then outer tube is easier of the radiant heat creep.According to the actually operating of carrying out so far of the present invention, it is about more than 60 millimeters to have confirmed that outer external diameter of pipe is preferably.
In addition, the external diameter ratio between the outer tube of twin wall emitter lateral and the interior pipe is preferably 2.0 to about 4.0.
Outer tube is more than about 18% weight by Cr content preferably and Ni content is that stainless steel more than about 8% weight is made, and it represents material for example is SUS304, SUS316, SU316L according to JIS (Japanese Industrial Standards).
When twin wall emitter lateral is installed, the ambient atmos suction inlet of twin wall emitter lateral preferably at least with twere every about more than 100 millimeters.
When the roller in being placed in stove had several times of the twin wall emitter lateral diameter of the radiant heat shielding unit diameter, very difficult utilization comprised that the radiant heat shielding unit of one group of twin wall emitter lateral stops the heat that heating source gives off to roll surface fully.Under these circumstances, can stop radiant heat effectively by other embodiment of the present invention shown in Fig. 7,8.In second embodiment of the invention shown in Figure 7, horizontal Tile ground under the roller that is positioned at stove top and/or be positioned at the stove bottom roller directly over be provided with many twin wall emitter laterals 20.
In third embodiment of the invention shown in Figure 8, one or more (having drawn two among the figure) twin wall emitter lateral 20 is used as support tube and a shielding slab 30 links to each other with this support tube as shown in the figure.Fig. 7 and Fig. 8 also show the arrangement of roller 12, heating source 14 and band 10.
Embodiment
Based on testing the The above results that obtains by actual device is done, twin wall emitter lateral shown in Figure 1 is made with the SUS316 stainless steel.The outer tube outer diameter D of twin wall emitter lateral is 114.3 millimeters, and outer tube diameter is 97.1 millimeters, and interior external diameter of pipe is 48.0 millimeters, and inner tube diameter is 41.2 millimeters.The ambient atmos suction inlet and the difference of altitude between the venting port of twin wall emitter lateral are 200 millimeters.Many comprise that respectively the radiant heat shielding unit of the twin wall emitter lateral of so making is installed in the upper and lower of vertical continuous annealing furnace heating zone as illustrated in fig. 13.The radiant heat shielding unit is installed in top, heating zone being arranged under each roller of upper zone on 400 millimeters the height.In addition, the radiant heat shielding unit is installed in the bottom, heating zone being arranged in directly over each roller of lower region on 400 millimeters the height.Measure the shield effectiveness of the radiant heat shielding unit of actual installation over about 2 years by the stove that under household condition turns round.
Measuring result is shown in Fig. 9 (sideslip incidence) and Figure 10 (the radiant heat shielding unit is changed frequency).In the present invention, as shown in Figure 9, compare with contrast heat radiation screening device with the traditional radiant heat shielding unit that adopts flat board and Dan Lengguan respectively, the sideslip incidence is reduced to about 1/3.In addition, as shown in figure 10, compare with the compare device with conventional apparatus, obviously prolong the work-ing life of radiant heat shielding unit in the present invention, this is because improved cooling effect by effectively utilizing from its ambient atmos suction inlet to the chimneyeffect that venting port is formed on the cooling tube inner fluid in the present invention.
In addition, in the arrangement of Figure 13, the radiant heat shielding unit of the present invention that comprises twin wall emitter lateral 20 also is arranged in stove top on the position between the adjacency channel, promptly is arranged on not to be just in time on the position below each roller 12.Can strengthen shield effectiveness by layout radiant heat shielding unit like this.
As mentioned above, the present invention can provide such radiant heat shielding unit, its cost is low, to preventing that the band sideslip is very effective and have longer work-ing life, this is to be the chimneyeffect that the cooling tube inner fluid forms because effectively utilized from the ambient atmos suction inlet to venting port.
Claims (4)
1. thermal shield apparatus that is used for vertical continuous annealing furnace, described stove comprises upper and lower and many rollers that are placed in the upper and lower, walk around because of sheet metal strip each roller from upwards become downwards or from become downwards up change the band travel direction in, to heat-treating by the described sheet metal strip of the continuous vertical transport of roller, described thermal shield apparatus be positioned in roller in the stove top under and/or the roller in the lower furnace directly over, this thermal shield apparatus comprises:
At least one twin wall emitter lateral, each twin wall emitter lateral comprises:
Pipe and an outer tube in one, should in pipe to have level outstanding or outstanding downwards so that be exposed to ambient atmos suction inlet in the ambient atmos, this outer tube has and projects upwards so that be exposed to venting port in the ambient atmos, and wherein the outer tube of each twin wall emitter lateral has the external diameter more than 60 millimeters, the ambient atmos suction inlet and the height difference H between the venting port of each twin wall emitter lateral are more than 150 millimeters, and the outer diameter D of the outer tube of each twin wall emitter lateral and the satisfied following relation of height difference H:
Wherein, the unit of outer diameter D is a rice, and the unit of height difference H is a rice.
2. thermal shield apparatus as claimed in claim 1, wherein this device comprises many twin wall emitter laterals, these twin wall emitter laterals flatly be arranged on roller in the stove top under and/or the roller in lower furnace directly over.
3. thermal shield apparatus as claimed in claim 1, wherein this device comprises at least one twin wall emitter lateral, each twin wall emitter lateral is used as a support tube, and a shielding slab links to each other with each support tube.
4. vertical continuous annealing furnace, it comprises:
The upper and lower part;
Many the rollers that are arranged in the upper and lower part;
Wherein walk around because of sheet metal strip each roller from upwards become downwards or from become downwards up change the band travel direction in, to heat-treating by the described sheet metal strip of the continuous vertical transport of roller;
Each described thermal shield apparatus of claim 1-3, its be arranged on roller in this stove top under and/or the roller in this lower furnace directly over.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01111473 CN1289697C (en) | 2001-03-14 | 2001-03-14 | Thermal shield apparatus for vertical continuous annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01111473 CN1289697C (en) | 2001-03-14 | 2001-03-14 | Thermal shield apparatus for vertical continuous annealing furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1374409A CN1374409A (en) | 2002-10-16 |
| CN1289697C true CN1289697C (en) | 2006-12-13 |
Family
ID=4659071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01111473 Expired - Lifetime CN1289697C (en) | 2001-03-14 | 2001-03-14 | Thermal shield apparatus for vertical continuous annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1289697C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792849B (en) * | 2009-12-11 | 2011-06-08 | 济南雷奥特机械制造有限公司 | Vertical continuous annealing furnace |
| CN103725854B (en) * | 2013-12-27 | 2015-06-10 | 天津阿瑞斯工业炉有限公司 | Novel silicon strip heat treatment production line control cooling device |
-
2001
- 2001-03-14 CN CN 01111473 patent/CN1289697C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1374409A (en) | 2002-10-16 |
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