US20120018931A1 - 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
- US20120018931A1 US20120018931A1 US13/138,616 US201013138616A US2012018931A1 US 20120018931 A1 US20120018931 A1 US 20120018931A1 US 201013138616 A US201013138616 A US 201013138616A US 2012018931 A1 US2012018931 A1 US 2012018931A1
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- United States
- Prior art keywords
- annealing
- annealing base
- protective
- hood
- protective hood
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Classifications
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- 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
Definitions
- 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 annealing 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.
- 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.
- protective gas in particular nitrogen and/or hydrogen
- the intrinsic strength of the annealed material 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 disadvantage 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 properties of the sheet metal over the entire joint height.
- 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 correspondingly impaired magnetic properties.
- the thermal-insulating construction of the annealing base made of refractory concrete slabs provides hardly any improvements in this regard.
- 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.
- 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 advantageous, 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 protective 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.
- the upper or uppermost has a greater quantity of radiant heat applied thereto.
- the protective hood is lengthened so that an additional radiant surface, which corresponds to at least three-fourths of the cupola surface, is provided between the annealing base and the placement surface of the support device 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 partially 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.
- the area of the jacket section of the protective hood corresponding to the vertical spacing of the placement surface from the annealing base must at least correspond to the cupola surface.
- heat losses because of the heat dissipation via the annealing base are not yet taken into consideration.
- implementing the surface of the jacket section corresponding 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.
- the annealing base can be constructed from mineral wool, which has a significantly higher thermal insulation value than typical refractory concrete slabs.
- the carrier device penetrates the annealing base constructed from mineral wool and is supported on the furnace foundation for load dissipation.
- the height of the annealing base constructed from mineral wool is to correspond to at least one-third, preferably one-half of the diameter of the protective hood.
- the protective gas supply line having outlet openings distributed around the circumference of the protective hood and the protective gas exhaust having an exhaust gas line centrally penetrating the annealing base, particularly advantageous conditions result in regard to the protective gas guiding, because the protective gas is heated uniformly on the external envelope of the annealing 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.
- 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.
- the burners may preferably be situated in the area between the annealing base and the placement surface of the support device for the annealed material which is provided above the annealing base.
- FIG. 1 shows a high-temperature furnace according to the invention having a gas-heated heating hood in a schematic longitudinal section and
- FIG. 2 shows an illustration corresponding to FIG. 1 of a high-temperature furnace according to the invention having an electrically heated heating hood.
- the high-temperature furnace according to FIGS. 1 and 2 has a furnace foundation 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 support device 3 is designed according to the two exemplary embodiments for receiving two sheet-metal joints 4 , which are mounted one above another on support disks 5 .
- a protective hood 6 For the annealing of the sheet-metal joints 4 , they are enclosed by a protective 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
- 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 annealing 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 FIG. 1 and has an electrical heating unit made of individual heating sections 15 which are each activatable per se according to FIG. 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 .
- 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 determines a jacket section of the protective hood 6 , which has a surface corresponding to at least three-fourths of the cupola surface, preferably the entire cupola surface.
- 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 allows uniform heating of both sheet-metal joints 4 , with the advantage that the material properties caused by the annealing correspond.
- 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 constructed 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 .
- the protective hood 6 can have varying heating power applied over its height.
- the burners 14 for the gas heating in FIG. 1 are situated below the placement surface 17 for the lower sheet-metal joint 4 .
- the individual sections 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 high-temperature furnace may also only be designed to heat a single sheet-metal joint 4 or more than two sheet-metal joints 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.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Articles (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Tunnel Furnaces (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
- 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 annealing 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.
- 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 material 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 disadvantage 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 properties of the sheet metal over the entire joint height.
- If two sheet-metal joints are each supported coaxially one above another on a corresponding 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 correspondingly impaired magnetic properties. The thermal-insulating construction of the annealing 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.
- 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 advantageous, 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 protective 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 another on the support device, the upper or uppermost has a greater quantity of radiant 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 provided between the annealing base and the placement surface of the support device 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 partially 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 corresponding 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 consideration. For this reason, implementing the surface of the jacket section corresponding 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 constructed from mineral wool and is supported on the furnace foundation for load dissipation. In order to ensure advantageous thermal insulation by the annealing base, the height of the annealing base constructed from mineral wool is to correspond 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 implemented as gas-tight, the protective gas supply line having outlet openings distributed around the circumference of the protective hood and the protective gas exhaust having an exhaust gas line centrally penetrating the annealing base, particularly advantageous conditions result in regard to the protective gas guiding, because the protective gas is heated uniformly on the external envelope of the annealing 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 annealed material which is provided above the annealing base.
- The subject matter of the invention is shown for exemplary purposes in the drawing. In the figures:
-
FIG. 1 shows a high-temperature furnace according to the invention having a gas-heated heating hood in a schematic longitudinal section and -
FIG. 2 shows an illustration corresponding toFIG. 1 of a high-temperature furnace according to the invention having an electrically heated heating hood. - The high-temperature furnace according to
FIGS. 1 and 2 has afurnace foundation 1 having anannealing base 2, which is penetrated by asupport device 3 for the annealed material, which is supported on thefurnace foundation 1. Thesupport device 3 is designed according to the two exemplary embodiments for receiving two sheet-metal joints 4, which are mounted one above another onsupport disks 5. For the annealing of the sheet-metal joints 4, they are enclosed by aprotective hood 6, whosejacket 7 is terminated gas-tight with the aid of aplacement flange 8 and aring seal 9 in relation to thefurnace foundation 1 and the annealingbase 2. The protective gas, typically nitrogen and/or hydrogen, is supplied via a protectivegas supply line 10, which hasoutlet openings 11 distributed around the circumference of theprotective hood 6, so that the protective gas flows between thejacket 7 and the annealingbase 2 along thejacket 7 into theprotective hood 6 and can be exhausted centrally via anexhaust gas line 12 penetrating the annealingbase 2. - The heating of the annealed material occurs via a placed
heating hood 13, which hasburners 14 distributed around the circumference according toFIG. 1 and has an electrical heating unit made ofindividual heating sections 15 which are each activatable per se according toFIG. 2 . The annealed material is thus heated via the particular heating unit of theheating hood 13, essentially by radiant heat which is emitted from theheating hood 6. Theheating hood 6 not only offers radiant surfaces in itsjacket 7, but rather also using itscupola 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 theheating hood 6 thus caused, thejacket 7 is lengthened in the area between the annealingbase 2 and theplacement surface 17 of thesupport device 3 for the lower sheet-metal joint 4. The configuration is made so that the vertical spacing h of theplacement surface 17 of thesupport device 3 from the annealingbase 2 determines a jacket section of theprotective hood 6, which has a surface corresponding to at least three-fourths of the cupola surface, preferably the entire cupola surface. In order to consider additional heat losses via the annealingbase 2, thislateral 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 allows uniform heating of both sheet-metal joints 4, with the advantage that the material properties caused by the annealing correspond. To suppress heat dissipation by the annealingbase 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 thejacket 7 of theprotective hood 6. An annealingbase 2 constructed from mineral wool is not capable, however, of dissipating the loads caused by the annealed material to thefurnace foundation 1, so that thesupport device 3 for the sheet-metal joints 4 is supported per se on thefurnace foundation 1. - To support the uniform heating of the sheet-
metal joints 4, theprotective hood 6 can have varying heating power applied over its height. For this purpose, theburners 14 for the gas heating inFIG. 1 are situated below theplacement surface 17 for the lower sheet-metal joint 4. According toFIG. 2 , theindividual sections 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 theplacement surface 17 of thesupport device 3 from the annealingbase 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) 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, wherein 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 , wherein 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 , wherein 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 claim 1 , wherein 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 , wherein the height of the annealing base (2) constructed from mineral wool at least corresponds to one-third, preferably one-half, of the diameter of the protective hood (6).
6. The high-temperature furnace according to claim 1 , wherein 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 protective 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 claim 1 , wherein the protective hood (6) can have a heating power, which decreases according to height, applied to it by the heating hood (13).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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ATA405/2009 | 2009-03-13 | ||
AT0040509A AT507671B1 (en) | 2009-03-13 | 2009-03-13 | HIGH-TEMPERATURE PISTON FOR GLOWING TREATMENT OF TINS |
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 |
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US20120018931A1 true US20120018931A1 (en) | 2012-01-26 |
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ID=42161402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/138,616 Abandoned US20120018931A1 (en) | 2009-03-13 | 2010-03-03 | High-temperature furnace for the annealing of sheet-metal joints |
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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) |
Cited By (6)
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US20120018931A1 (en) * | 2009-03-13 | 2012-01-26 | Ebner Industrieofenbau Gesellschaft M.B.H. | High-temperature furnace for the annealing of sheet-metal joints |
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 |
US20140151941A1 (en) * | 2012-11-30 | 2014-06-05 | Bilstein Gmbh & Co.Kg | Hood-type annealing furnace and method for operating the same |
WO2017115187A1 (en) * | 2015-12-30 | 2017-07-06 | Sabic Global Technologies B.V. | Apparatus and methodologies for batch annealing |
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 |
CN114277241A (en) * | 2022-01-05 | 2022-04-05 | 首钢智新迁安电磁材料有限公司 | Device for high-temperature annealing of oriented silicon steel and high-temperature annealing method of oriented silicon steel |
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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 |
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 |
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US20120018931A1 (en) * | 2009-03-13 | 2012-01-26 | Ebner Industrieofenbau Gesellschaft M.B.H. | High-temperature furnace for the annealing of sheet-metal joints |
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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 |
-
2009
- 2009-03-13 AT AT0040509A patent/AT507671B1/en not_active IP Right Cessation
-
2010
- 2010-03-03 KR KR1020117020951A patent/KR20110135934A/en not_active Application Discontinuation
- 2010-03-03 UA UAA201111674A patent/UA102593C2/en unknown
- 2010-03-03 EP EP10710150A patent/EP2406569A1/en not_active Withdrawn
- 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 JP JP2011553230A patent/JP2012520390A/en not_active Withdrawn
- 2010-03-03 CN CN201080016390.1A patent/CN102395852B/en not_active Expired - Fee Related
- 2010-03-03 BR BRPI1009103A patent/BRPI1009103A2/en not_active IP Right Cessation
- 2010-03-03 US US13/138,616 patent/US20120018931A1/en not_active Abandoned
- 2010-03-03 RU RU2011141411/02A patent/RU2502028C2/en not_active IP Right Cessation
- 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
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120018931A1 (en) * | 2009-03-13 | 2012-01-26 | Ebner Industrieofenbau Gesellschaft M.B.H. | High-temperature furnace for the annealing of sheet-metal joints |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120018931A1 (en) * | 2009-03-13 | 2012-01-26 | Ebner Industrieofenbau Gesellschaft M.B.H. | High-temperature furnace for the annealing of sheet-metal joints |
US20140151941A1 (en) * | 2012-11-30 | 2014-06-05 | Bilstein Gmbh & Co.Kg | Hood-type annealing furnace and method for operating the same |
US9297585B2 (en) * | 2012-11-30 | 2016-03-29 | Bilstein Gmbh & Co. Kg | Hood-type annealing furnace and method for operating the same |
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 |
WO2017115187A1 (en) * | 2015-12-30 | 2017-07-06 | Sabic Global Technologies B.V. | Apparatus and methodologies for batch annealing |
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 |
CN114277241A (en) * | 2022-01-05 | 2022-04-05 | 首钢智新迁安电磁材料有限公司 | Device for high-temperature annealing of oriented silicon steel and high-temperature annealing method of oriented silicon steel |
Also Published As
Publication number | Publication date |
---|---|
AT507671A4 (en) | 2010-07-15 |
RU2502028C2 (en) | 2013-12-20 |
WO2010102313A1 (en) | 2010-09-16 |
ZA201106475B (en) | 2012-12-27 |
CN102395852A (en) | 2012-03-28 |
BRPI1009103A2 (en) | 2016-03-08 |
CA2755138A1 (en) | 2010-09-16 |
EP2406569A1 (en) | 2012-01-18 |
JP2012520390A (en) | 2012-09-06 |
TW201040287A (en) | 2010-11-16 |
CN102395852B (en) | 2014-08-20 |
KR20110135934A (en) | 2011-12-20 |
UA102593C2 (en) | 2013-07-25 |
MX2011009546A (en) | 2011-10-12 |
AT507671B1 (en) | 2010-07-15 |
RU2011141411A (en) | 2013-04-20 |
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