CA2755138A1 - High-temperature furnace for the annealing of sheet-metal joints - Google Patents
High-temperature furnace for the annealing of sheet-metal joints Download PDFInfo
- Publication number
- CA2755138A1 CA2755138A1 CA2755138A CA2755138A CA2755138A1 CA 2755138 A1 CA2755138 A1 CA 2755138A1 CA 2755138 A CA2755138 A CA 2755138A CA 2755138 A CA2755138 A CA 2755138A CA 2755138 A1 CA2755138 A1 CA 2755138A1
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- CA
- Canada
- Prior art keywords
- annealing
- hood
- annealing base
- protective
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B11/00—Bell-type furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/663—Bell-type furnaces
- C21D9/667—Multi-station furnaces
- C21D9/67—Multi-station furnaces adapted for treating the charge in vacuum or special atmosphere
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Furnace Details (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Articles (AREA)
- Tunnel Furnaces (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
A high-temperature furnace for the annealing of sheet-metal joints (4) is described, having an annealing base (2), having a support device (3), which forms a placement surface (17) for coaxially receiving a sheet-metal joint (4) with spacing above the annealing base (2), having a protective hood (6), which coaxially encloses the annealing base (2) with the support device (3), and is connected to a protective gas supply line (10) and a protective gas exhaust, made of a cylindrical jacket (7) and a cupola (16) which terminates the jacket (7) on top, having a peripheral seal (9) between the annealing base (2) and the protective hood (6), and having a heating hood (13) which encloses the protective hood (6) with spacing. In order to allow uniform annealed material heating, it is proposed that the axial jacket section of the protective hood (6) which is determined by the vertical spacing (h) of the placement surface (17) of the support device (3) from the annealing base (2) has a surface which makes up at least three-fourths of the cupola surface.
Description
High-temperature furnace for the annealing of sheet-metal joints 1. Field of the Invention The invention relates to a high-temperature furnace for the annealing of sheet-metal joints having an annealing base, having a support device which forms a placement surface for coaxially receiving a sheet-metal joint with spacing above the annealing base, having a protective hood, which coaxially encloses the an-nealing base with the support device and is connected to a protective gas supply line and a protective gas exhaust, made of a cylindrical jacket and a cupola which terminates the jacket on top, having a peripheral seal between the annealing base and the protective hood and having a heating hood which encloses the protective hood with spacing.
2. Description of the Prior Art Transformer sheet-metal made of steel having a silicon component of 0.5 - 3.5 wt.-% is typically subjected to a high-temperature treatment in a hood furnace for technological reasons. The annealed material is heated in a protective hood under protective gas, in particular nitrogen and/or hydrogen, up to 1200 C, essentially by radiant heat. At these high temperatures, the intrinsic strength of the annealed ma-terial decreases greatly, so that the sheet-metal joints, which comprise coiled steel strips, are each supported per se on a support device, which rests in a load-dissipating manner on an annealing base or penetrating the annealing base on a foundation. The known high-temperature furnaces of this type have the disadvan-tage above all that during annealing of a single sheet-metal joint, the sheet-metal joint which is centrally supported above the annealing base on the support device is heated significantly less in its lower area than in its upper area. The annealing procedure must therefore be lengthened in order to achieve the magnetic proper-ties of the sheet metal over the entire joint height.
If two sheet-metal joints are each supported coaxially one above another on a cor-responding support device, it is to be noted that the heating of the upper joint or the upper joints occurs significantly more rapidly than that of the lower joint, which thus does not reach the desired final temperature and therefore has correspond-ingly impaired magnetic properties. The thermal-insulating construction of the an-nealing base made of refractory concrete slabs provides hardly any improvements in this regard. In addition, to exhaust the protective gas introduced centrally into the protective hood, the protective hood is sealed via a sand bed, which receives the lower edge of the protective hood, so that the protective gas escapes through the sand bed into the heating hood and is exhausted from there.
SUMMARY OF THE INVENTION
The invention is therefore based on the object of implementing a high-temperature furnace of the type described at the beginning for the annealing of sheet-metal joints so that the annealed material can be heated uniformly to high treatment temperatures in a protective gas atmosphere, in order to be able to ensure advan-tageous, uniform annealing even of sheet-metal joints for transformer sheet-metal made of steel having a silicon content up to 3.5 wt.-%.
The invention achieves the stated object in that the axial jacket spacing of the pro-tective hood, which is determined by the vertical spacing of the placement surface of the support device, has a surface which makes up at least three-fourths of the cupola surface.
If two sheet-metal joints are each supported coaxially one above another on a cor-responding support device, it is to be noted that the heating of the upper joint or the upper joints occurs significantly more rapidly than that of the lower joint, which thus does not reach the desired final temperature and therefore has correspond-ingly impaired magnetic properties. The thermal-insulating construction of the an-nealing base made of refractory concrete slabs provides hardly any improvements in this regard. In addition, to exhaust the protective gas introduced centrally into the protective hood, the protective hood is sealed via a sand bed, which receives the lower edge of the protective hood, so that the protective gas escapes through the sand bed into the heating hood and is exhausted from there.
SUMMARY OF THE INVENTION
The invention is therefore based on the object of implementing a high-temperature furnace of the type described at the beginning for the annealing of sheet-metal joints so that the annealed material can be heated uniformly to high treatment temperatures in a protective gas atmosphere, in order to be able to ensure advan-tageous, uniform annealing even of sheet-metal joints for transformer sheet-metal made of steel having a silicon content up to 3.5 wt.-%.
The invention achieves the stated object in that the axial jacket spacing of the pro-tective hood, which is determined by the vertical spacing of the placement surface of the support device, has a surface which makes up at least three-fourths of the cupola surface.
The invention proceeds from the finding that additional radiant heat is supplied to the annealed material in the upper area of the protective hood via its cupola, so that in protective hoods for the annealing of a single sheet-metal joint, the sheet-metal joint is heated more rapidly in its upper area than in the lower area.
During the annealing of two or more sheet-metal joints provided coaxially one above an-other on the support device, the upper or uppermost has a greater quantity of ra-diant heat applied thereto. To compensate for this varying heat introduction in the protective hood, the protective hood is lengthened so that an additional radiant surface, which corresponds to at least three-fourths of the cupola surface, is pro-vided between the annealing base and the placement surface of the support de-vice for the (lower) sheet-metal joint by the lengthened jacket of the protective hood in this area, so that a sufficient amount of heat can also be supplied to the annealed material in the lower area of the protective hood, in order to at least par-tially compensate for the heat supplied in the upper area of the protective hood.
Because of this measure, substantially uniform heating of the annealed material to the treatment temperature can thus be ensured.
In order that a radiant surface corresponding to the radiant surface of the cupola can be achieved in the area of the placement surface of the support device via the protective hood jacket, the area of the jacket section of the protective hood corre-sponding to the vertical spacing of the placement surface from the annealing base must at least correspond to the cupola surface. In this way, however, heat losses because of the heat dissipation via the annealing base are not yet taken into con-sideration. For this reason, implementing the surface of the jacket section corre-sponding to the vertical spacing of the placement surface from the annealing base as greater than the cupola surface suggests itself. An enlargement by 5 to 20%
is generally sufficient to cover the heat losses through the annealing base. In order that the heat dissipation via the annealing base can be largely suppressed, the annealing base can be constructed from mineral wool, which has a significantly higher thermal insulation value than typical refractory concrete slabs.
However, larger loads cannot be dissipated via an annealing base constructed from mineral wool. For this reason, the carrier device penetrates the annealing base con-structed from mineral wool and is supported on the furnace foundation for load dis-sipation. In order to ensure advantageous thermal insulation by the annealing base, the height of the annealing base constructed from mineral wool is to corre-spond to at least one-third, preferably one-half of the diameter of the protective hood.
If the peripheral seal between the annealing base and the protective hood is im-plemented as gas-tight, the protective gas supply line having outlet openings dis-tributed around the circumference of the protective hood and the protective gas exhaust having an exhaust gas line centrally penetrating the annealing base, par-ticularly advantageous conditions result in regard to the protective gas guiding, because the protective gas is heated uniformly on the external envelope of the an-nealing base and the internal surface of the protective hood cylinder. This heated protective gas flows past the external hot sheet-metal joint areas and is supplied via the colder areas in the sheet-metal joint interior to the exhaust gas line guided centrally through the annealing base.
A further possibility in order to take varying heating of the annealed material over the height of the protective hood into consideration comprises applying heating power which decreases with height to the protective hood through the heating hood, so that because of the higher heat supply in the lower area of the protective hood, improved heating of the annealed material can be ensured. In heating hoods having an electrical heater, separate sections of the heating unit which are each activatable per se may be provided according to height for this purpose. In a gas-heated heating hood, the burners may preferably be situated in the area between the annealing base and the placement surface of the support device for the an-nealed material which is provided above the annealing base.
During the annealing of two or more sheet-metal joints provided coaxially one above an-other on the support device, the upper or uppermost has a greater quantity of ra-diant heat applied thereto. To compensate for this varying heat introduction in the protective hood, the protective hood is lengthened so that an additional radiant surface, which corresponds to at least three-fourths of the cupola surface, is pro-vided between the annealing base and the placement surface of the support de-vice for the (lower) sheet-metal joint by the lengthened jacket of the protective hood in this area, so that a sufficient amount of heat can also be supplied to the annealed material in the lower area of the protective hood, in order to at least par-tially compensate for the heat supplied in the upper area of the protective hood.
Because of this measure, substantially uniform heating of the annealed material to the treatment temperature can thus be ensured.
In order that a radiant surface corresponding to the radiant surface of the cupola can be achieved in the area of the placement surface of the support device via the protective hood jacket, the area of the jacket section of the protective hood corre-sponding to the vertical spacing of the placement surface from the annealing base must at least correspond to the cupola surface. In this way, however, heat losses because of the heat dissipation via the annealing base are not yet taken into con-sideration. For this reason, implementing the surface of the jacket section corre-sponding to the vertical spacing of the placement surface from the annealing base as greater than the cupola surface suggests itself. An enlargement by 5 to 20%
is generally sufficient to cover the heat losses through the annealing base. In order that the heat dissipation via the annealing base can be largely suppressed, the annealing base can be constructed from mineral wool, which has a significantly higher thermal insulation value than typical refractory concrete slabs.
However, larger loads cannot be dissipated via an annealing base constructed from mineral wool. For this reason, the carrier device penetrates the annealing base con-structed from mineral wool and is supported on the furnace foundation for load dis-sipation. In order to ensure advantageous thermal insulation by the annealing base, the height of the annealing base constructed from mineral wool is to corre-spond to at least one-third, preferably one-half of the diameter of the protective hood.
If the peripheral seal between the annealing base and the protective hood is im-plemented as gas-tight, the protective gas supply line having outlet openings dis-tributed around the circumference of the protective hood and the protective gas exhaust having an exhaust gas line centrally penetrating the annealing base, par-ticularly advantageous conditions result in regard to the protective gas guiding, because the protective gas is heated uniformly on the external envelope of the an-nealing base and the internal surface of the protective hood cylinder. This heated protective gas flows past the external hot sheet-metal joint areas and is supplied via the colder areas in the sheet-metal joint interior to the exhaust gas line guided centrally through the annealing base.
A further possibility in order to take varying heating of the annealed material over the height of the protective hood into consideration comprises applying heating power which decreases with height to the protective hood through the heating hood, so that because of the higher heat supply in the lower area of the protective hood, improved heating of the annealed material can be ensured. In heating hoods having an electrical heater, separate sections of the heating unit which are each activatable per se may be provided according to height for this purpose. In a gas-heated heating hood, the burners may preferably be situated in the area between the annealing base and the placement surface of the support device for the an-nealed material which is provided above the annealing base.
BRIEF DESCRIPTION OF THE DRAWINGS
The subject matter of the invention is shown for exemplary purposes in the draw-ing. In the figures:
Figure 1 shows a high-temperature furnace according to the invention having a gas-heated heating hood in a schematic longitudinal section and Figure 2 shows an illustration corresponding to Figure 1 of a high-temperature furnace according to the invention having an electrically heated heat-ing hood.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The high-temperature furnace according to Figures 1 and 2 has a furnace founda-tion 1 having an annealing base 2, which is penetrated by a support device 3 for the annealed material, which is supported on the furnace foundation 1. The sup-port device 3 is designed according to the two exemplary embodiments for receiv-ing two sheet-metal joints 4, which are mounted one above another on support disks 5. For the annealing of the sheet-metal joints 4, they are enclosed by a pro-tective hood 6, whose jacket 7 is terminated gas-tight with the aid of a placement flange 8 and a ring seal 9 in relation to the furnace foundation 1 and the annealing base 2. The protective gas, typically nitrogen and/or hydrogen, is supplied via a protective gas supply line 10, which has outlet openings 11 distributed around the circumference of the protective hood 6, so that the protective gas flows between the jacket 7 and the annealing base 2 along the jacket 7 into the protective hood 6 and can be exhausted centrally via an exhaust gas line 12 penetrating the anneal-ing base 2.
The heating of the annealed material occurs via a placed heating hood 13, which has burners 14 distributed around the circumference according to Figure 1 and has an electrical heating unit made of individual heating sections 15 which are each activatable per se according to Figure 2. The annealed material is thus heated via the particular heating unit of the heating hood 13, essentially by radiant heat which is emitted from the heating hood 6. The heating hood 6 not only offers radiant surfaces in its jacket 7, but rather also using its cupola 16, so that the joint heating also occurs via the cupola surface in the area of the upper sheet-metal joint 4. In order to compensate for the greater heat introduction in the upper area of the heating hood 6 thus caused, the jacket 7 is lengthened in the area between the annealing base 2 and the placement surface 17 of the support device 3 for the lower sheet-metal joint 4. The configuration is made so that the vertical spacing h of the placement surface 17 of the support device 3 from the annealing base 2 de-termines a jacket section of the protective hood 6, which has a surface corre-sponding to at least three-fourths of the cupola surface, preferably the entire cu-pola surface. In order to consider additional heat losses via the annealing base 2, this lateral surface section 5 can be up to 20% larger than the cupola surface. A
radiant surface is thus available for the heating of the lower sheet-metal joint 4, which is adapted to the radiant surface for the upper sheet-metal joint 4, which al-lows uniform heating of both sheet-metal joints 4, with the advantage that the ma-terial properties caused by the annealing correspond. To suppress heat dissipation by the annealing base 2, it can be constructed from mineral wool having good thermal insulation properties, at a height which corresponds to at least one-third of the diameter of the jacket 7 of the protective hood 6. An annealing base 2 con-structed from mineral wool is not capable, however, of dissipating the loads caused by the annealed material to the furnace foundation 1, so that the support device 3 for the sheet-metal joints 4 is supported per se on the furnace foundation 1.
To support the uniform heating of the sheet-metal joints 4, the protective hood 6 can have varying heating power applied over its height. For this purpose, the burners 14 for the gas heating in Figure 1 are situated below the placement sur-face 17 for the lower sheet-metal joint 4. According to Figure 2, the individual sec-tions 15 of the electrical heating unit may be activated, so that varying heating power may be ensured as needed depending on height by turning off or regulating individual sections, for example.
The invention is not restricted to the exemplary embodiments shown, of course.
Thus, the high-temperature furnace may also only be designed to heat a single sheet-metal joint 4 or more than two sheet-metal joints 4. In case of heating of a single sheet-metal joint 4, the vertical spacing h, which is selected as a function of the cupola surface, of the placement surface 17 of the support device 3 from the annealing base 2 prevents uneven heating of this sheet-metal joint 4 depending on height.
The subject matter of the invention is shown for exemplary purposes in the draw-ing. In the figures:
Figure 1 shows a high-temperature furnace according to the invention having a gas-heated heating hood in a schematic longitudinal section and Figure 2 shows an illustration corresponding to Figure 1 of a high-temperature furnace according to the invention having an electrically heated heat-ing hood.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The high-temperature furnace according to Figures 1 and 2 has a furnace founda-tion 1 having an annealing base 2, which is penetrated by a support device 3 for the annealed material, which is supported on the furnace foundation 1. The sup-port device 3 is designed according to the two exemplary embodiments for receiv-ing two sheet-metal joints 4, which are mounted one above another on support disks 5. For the annealing of the sheet-metal joints 4, they are enclosed by a pro-tective hood 6, whose jacket 7 is terminated gas-tight with the aid of a placement flange 8 and a ring seal 9 in relation to the furnace foundation 1 and the annealing base 2. The protective gas, typically nitrogen and/or hydrogen, is supplied via a protective gas supply line 10, which has outlet openings 11 distributed around the circumference of the protective hood 6, so that the protective gas flows between the jacket 7 and the annealing base 2 along the jacket 7 into the protective hood 6 and can be exhausted centrally via an exhaust gas line 12 penetrating the anneal-ing base 2.
The heating of the annealed material occurs via a placed heating hood 13, which has burners 14 distributed around the circumference according to Figure 1 and has an electrical heating unit made of individual heating sections 15 which are each activatable per se according to Figure 2. The annealed material is thus heated via the particular heating unit of the heating hood 13, essentially by radiant heat which is emitted from the heating hood 6. The heating hood 6 not only offers radiant surfaces in its jacket 7, but rather also using its cupola 16, so that the joint heating also occurs via the cupola surface in the area of the upper sheet-metal joint 4. In order to compensate for the greater heat introduction in the upper area of the heating hood 6 thus caused, the jacket 7 is lengthened in the area between the annealing base 2 and the placement surface 17 of the support device 3 for the lower sheet-metal joint 4. The configuration is made so that the vertical spacing h of the placement surface 17 of the support device 3 from the annealing base 2 de-termines a jacket section of the protective hood 6, which has a surface corre-sponding to at least three-fourths of the cupola surface, preferably the entire cu-pola surface. In order to consider additional heat losses via the annealing base 2, this lateral surface section 5 can be up to 20% larger than the cupola surface. A
radiant surface is thus available for the heating of the lower sheet-metal joint 4, which is adapted to the radiant surface for the upper sheet-metal joint 4, which al-lows uniform heating of both sheet-metal joints 4, with the advantage that the ma-terial properties caused by the annealing correspond. To suppress heat dissipation by the annealing base 2, it can be constructed from mineral wool having good thermal insulation properties, at a height which corresponds to at least one-third of the diameter of the jacket 7 of the protective hood 6. An annealing base 2 con-structed from mineral wool is not capable, however, of dissipating the loads caused by the annealed material to the furnace foundation 1, so that the support device 3 for the sheet-metal joints 4 is supported per se on the furnace foundation 1.
To support the uniform heating of the sheet-metal joints 4, the protective hood 6 can have varying heating power applied over its height. For this purpose, the burners 14 for the gas heating in Figure 1 are situated below the placement sur-face 17 for the lower sheet-metal joint 4. According to Figure 2, the individual sec-tions 15 of the electrical heating unit may be activated, so that varying heating power may be ensured as needed depending on height by turning off or regulating individual sections, for example.
The invention is not restricted to the exemplary embodiments shown, of course.
Thus, the high-temperature furnace may also only be designed to heat a single sheet-metal joint 4 or more than two sheet-metal joints 4. In case of heating of a single sheet-metal joint 4, the vertical spacing h, which is selected as a function of the cupola surface, of the placement surface 17 of the support device 3 from the annealing base 2 prevents uneven heating of this sheet-metal joint 4 depending on height.
Claims (7)
1. A high-temperature furnace for the annealing of sheet-metal joints (4) hav-ing an annealing base (2), having a support device (3), which forms a placement surface (17) for coaxially receiving a sheet-metal joint (4) with spacing above the annealing base (2), having a protective hood (6), which coaxially encloses the an-nealing base (2) with the support device (3), and is connected to a protective gas supply line (10) and a protective gas exhaust, made of a cylindrical jacket (7) and a cupola (16) which terminates the jacket (7) on top, having a peripheral seal (9) between the annealing base (2) and the protective hood (6), and having a heating hood (13) which encloses the protective hood (6) with spacing, characterized in that the axial jacket section of the protective hood (6) which is determined by the vertical spacing (h) of the placement surface (17) of the support device (3) from the annealing base (2) has a surface which makes up at least three-fourths of the cupola surface.
2. The high-temperature furnace according to Claim 1, characterized in that the surface of the jacket section corresponding to the vertical spacing (h) of the placement surface (17) from the annealing base (2) at least corresponds to the cupola surface.
3. The high-temperature furnace according to Claim 1 or 2, characterized in that the surface of the jacket section corresponding to the vertical spacing (h) of the placement surface (17) from the annealing base (2) is 5 to 20% greater than the cupola surface.
4. The high-temperature furnace according to one of Claims 1 through 3, characterized in that the annealing base (2) is constructed from mineral wool, and the support device (3) penetrates the annealing base (2) and is supported on a furnace foundation (1).
5. The high-temperature furnace according to Claim 4, characterized in that the height of the annealing base (2) constructed from mineral wool at least corre-sponds to one-third, preferably one-half, of the diameter of the protective hood (6).
6. The high-temperature furnace according to one of Claims 1 through 5, characterized in that the peripheral seal (9) between the annealing base (2) and the protective hood (6) is implemented as gas-tight, and the protective gas supply line (10) has outlet openings (11) distributed around the circumference of the pro-tective hood (6), and the protective gas exhaust has an exhaust gas line (12) which centrally penetrates the annealing base (2).
7. The high-temperature furnace according to one of Claims 1 through 6, characterized in that the protective hood (6) can have a heating power, which de-creases according to height, applied to it by the heating hood (13).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0040509A AT507671B1 (en) | 2009-03-13 | 2009-03-13 | HIGH-TEMPERATURE PISTON FOR GLOWING TREATMENT OF TINS |
| ATA405/2009 | 2009-03-13 | ||
| PCT/AT2010/000060 WO2010102313A1 (en) | 2009-03-13 | 2010-03-03 | High-temperature furnace for annealing sheet metal packets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2755138A1 true CA2755138A1 (en) | 2010-09-16 |
Family
ID=42161402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2755138A Abandoned CA2755138A1 (en) | 2009-03-13 | 2010-03-03 | High-temperature furnace for the annealing of sheet-metal joints |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US20120018931A1 (en) |
| EP (1) | EP2406569A1 (en) |
| JP (1) | JP2012520390A (en) |
| KR (1) | KR20110135934A (en) |
| CN (1) | CN102395852B (en) |
| AT (1) | AT507671B1 (en) |
| BR (1) | BRPI1009103A2 (en) |
| CA (1) | CA2755138A1 (en) |
| MX (1) | MX2011009546A (en) |
| RU (1) | RU2502028C2 (en) |
| TW (1) | TW201040287A (en) |
| UA (1) | UA102593C2 (en) |
| WO (1) | WO2010102313A1 (en) |
| ZA (1) | ZA201106475B (en) |
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|---|---|---|---|---|
| AT507671B1 (en) * | 2009-03-13 | 2010-07-15 | Ebner Ind Ofenbau | HIGH-TEMPERATURE PISTON FOR GLOWING TREATMENT OF TINS |
| CN102703677A (en) * | 2012-06-27 | 2012-10-03 | 艾伯纳工业炉(太仓)有限公司 | HITT mono-volume stacking bell type annealing furnace for oriented electrical steel heat treatment |
| DE102012023430A1 (en) * | 2012-11-30 | 2014-06-05 | Bilstein Gmbh & Co. Kg | Hood annealing furnace and method for operating such |
| CN103453765A (en) * | 2013-08-29 | 2013-12-18 | 江苏高皓工业炉有限公司 | Simple cover type saw blade sintering furnace |
| JP5841286B1 (en) * | 2015-07-03 | 2016-01-13 | 中外炉工業株式会社 | Bell-type annealing furnace and its modification method |
| WO2017115187A1 (en) * | 2015-12-30 | 2017-07-06 | Sabic Global Technologies B.V. | Apparatus and methodologies for batch annealing |
| CN105969972B (en) * | 2016-07-15 | 2018-03-30 | 武汉电炉有限公司 | A kind of high temperature bell-type furnace protects gas intake and exhaust method and device |
| CN110398154A (en) * | 2019-06-14 | 2019-11-01 | 上海至纯洁净***科技股份有限公司 | A kind of holding furnace protective device |
| CN114277241B (en) * | 2022-01-05 | 2023-07-28 | 首钢智新迁安电磁材料有限公司 | High-temperature annealing method of oriented silicon steel |
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| JP4730520B2 (en) * | 2005-04-20 | 2011-07-20 | 住友電気工業株式会社 | Baking method |
| RU2299915C1 (en) * | 2005-10-31 | 2007-05-27 | Открытое акционерное общество "Новолипецкий металлургический комбинат" (ОАО "НЛМК") | Bell-type furnace for annealing roll metal |
| CN200972327Y (en) * | 2006-11-20 | 2007-11-07 | 中国船舶重工集团公司第七二五研究所 | Bell industrial furnace device within firepot type |
| AT507671B1 (en) * | 2009-03-13 | 2010-07-15 | Ebner Ind Ofenbau | HIGH-TEMPERATURE PISTON FOR GLOWING TREATMENT OF TINS |
-
2009
- 2009-03-13 AT AT0040509A patent/AT507671B1/en not_active IP Right Cessation
-
2010
- 2010-03-03 CN CN201080016390.1A patent/CN102395852B/en not_active Expired - Fee Related
- 2010-03-03 JP JP2011553230A patent/JP2012520390A/en not_active Withdrawn
- 2010-03-03 RU RU2011141411/02A patent/RU2502028C2/en not_active IP Right Cessation
- 2010-03-03 US US13/138,616 patent/US20120018931A1/en not_active Abandoned
- 2010-03-03 EP EP10710150A patent/EP2406569A1/en not_active Withdrawn
- 2010-03-03 UA UAA201111674A patent/UA102593C2/en unknown
- 2010-03-03 BR BRPI1009103A patent/BRPI1009103A2/en not_active IP Right Cessation
- 2010-03-03 KR KR1020117020951A patent/KR20110135934A/en not_active Application Discontinuation
- 2010-03-03 MX MX2011009546A patent/MX2011009546A/en not_active Application Discontinuation
- 2010-03-03 WO PCT/AT2010/000060 patent/WO2010102313A1/en active Application Filing
- 2010-03-03 CA CA2755138A patent/CA2755138A1/en not_active Abandoned
- 2010-03-10 TW TW099106856A patent/TW201040287A/en unknown
-
2011
- 2011-09-05 ZA ZA2011/06475A patent/ZA201106475B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN102395852A (en) | 2012-03-28 |
| ZA201106475B (en) | 2012-12-27 |
| BRPI1009103A2 (en) | 2016-03-08 |
| JP2012520390A (en) | 2012-09-06 |
| WO2010102313A1 (en) | 2010-09-16 |
| RU2502028C2 (en) | 2013-12-20 |
| AT507671A4 (en) | 2010-07-15 |
| KR20110135934A (en) | 2011-12-20 |
| EP2406569A1 (en) | 2012-01-18 |
| CN102395852B (en) | 2014-08-20 |
| MX2011009546A (en) | 2011-10-12 |
| TW201040287A (en) | 2010-11-16 |
| RU2011141411A (en) | 2013-04-20 |
| US20120018931A1 (en) | 2012-01-26 |
| UA102593C2 (en) | 2013-07-25 |
| AT507671B1 (en) | 2010-07-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |
Effective date: 20160303 |