CN203923311U - A kind of long-life process furnace billet conveying roller table - Google Patents
A kind of long-life process furnace billet conveying roller table Download PDFInfo
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- CN203923311U CN203923311U CN201420296002.5U CN201420296002U CN203923311U CN 203923311 U CN203923311 U CN 203923311U CN 201420296002 U CN201420296002 U CN 201420296002U CN 203923311 U CN203923311 U CN 203923311U
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000008569 process Effects 0.000 title claims abstract description 32
- 210000003739 neck Anatomy 0.000 claims description 81
- 238000010438 heat treatment Methods 0.000 claims description 16
- 229920000742 Cotton Polymers 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 4
- 238000013022 venting Methods 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000009827 uniform distribution Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 238000003801 milling Methods 0.000 abstract description 5
- 229910000601 superalloy Inorganic materials 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 238000009749 continuous casting Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 206010000372 Accident at work Diseases 0.000 description 1
- 239000004484 Briquette Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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Abstract
A kind of long-life process furnace billet conveying roller table, belongs to furnace apparatus technical field, for transporting steel billet in process furnace.Its technical scheme is: billet conveying roller table does not have water-cooled facility, and the body of roll adopts the thick-walled structure of circular tube shaped, has the collars of multiple annular projections in the outer circumferential walls of the body of roll, and multiple collars are axially uniformly distributed along the body of roll on the body of roll.The body of roll of the present utility model and roll neck all adopt superalloy cast to form, and furnace roller does not have water-cooling structure, and furnace roller surface temperature is identical with fire box temperature, can not reduce the surface temperature of slab, thereby better meets the production requirement of milling train; The body of roll has adopted protruding collars structure, and steel billet only contacts with collars, can reduce bonding on furnace roller of iron scale, effectively ensures quality product.The utility model can ensure safety in production, improves the operational efficiency of equipment, reduces maintenance of equipment work amount simultaneously, reduces labour intensity, improves workman's labor condition, has very large economic and social benefit.
Description
Technical field
The utility model relates to the slab conveying roller of the Non-water-cooled that process furnace uses on a kind of sheet billet continuous casting and rolling production line, belongs to furnace apparatus technical field.
Background technology
In sheet billet continuous casting and rolling production line, thin slab is from continuous caster casting and after cutting into certain length, enter stove at the bottom of roller, heat at roller hearth type heating furnace, be sent to milling train, finally become a useful person by mill milling, slab adopts roller-way transmission in process furnace, roller-way holder steel billet and is moved in process furnace, in the course of conveying of steel billet, the temperature of slab is also brought up to desired 1150 DEG C of steel rolling process from initial 800 ~ 900 DEG C, therefore, actual furnace temperature in process furnace, all at 1170 ~ 1180 DEG C, even can reach more than 1200 DEG C.
At present, the furnace roller of consigning slab in process furnace has or not water cooling roller channel and two kinds of structures of water-cooled furnace roller.
The roller-way of Non-water-cooled roller-way adopts superalloy casting to form, and this roller-way life-span is generally 8 months, there will be body of roll bulge, weld bond to snap and the accident such as fracture after exceeding the time limit to use, and very large to Influence of production, therefore, in actual production, use range is restricted.
The body of roll water flowing of the furnace roller of water-cooled furnace roller is cooling, on the body of roll, weld the high temperature steel collars that 4 width are 60 ~ 100mm, slab in collars holder, on the body of roll between collars, cover the heat insulation refractory materials of one deck, in order to stop the heat exchange between high temperature billet steel and the water-cooled body of roll, and reduce the heat absorption of the water-cooled body of roll, improve the thermo-efficiency of process furnace.Because water-cooled furnace roller can bear very high furnace temperature, therefore water-cooled furnace roller structure is used the most general on stove at the bottom of roller, but this furnace roller also has shortcoming, the firstth, because body of roll water flowing is cooling, resistance to material surface temperature between collars and collars is up to 1000 DEG C, lower than 1150 DEG C of the actual temperatures of steel billet, thereby slab when move in process furnace, upper and lower surface inevitably produces the temperature difference, in the time that milling train production thickness is 1.0mm or the ultra-thin specification kind below 1.0mm, once the temperature difference of slab exceedes more than 10 DEG C, when rolling, be easy to occur intermediate blank sideslip, the phenomenons such as whipping, when serious, cause industrial accident.Once and the resistance to material covering on the water-cooled furnace roller body of roll comes off, the temperature difference that slab is caused can be larger; The secondth, water-cooled furnace roller need to arrange cooling water pipeline, increase pump group, valve, flexible pipe etc., at special occasions, during as employing cross sliding type transition slab, can increase complexity and the maintenance difficulties of equipment; The 3rd is that the heat that furnace roller water coolant is taken away generally accounts for the more than 10% of whole heat supplieds, can increase the gas consumption cost of process furnace after employing water-cooled furnace roller.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of long-life process furnace billet conveying roller table, this roller-way has overcome the shortcoming of existing Non-water-cooled roller-way, operation life reaches more than 2 years, can meet the general requirement of stove at the bottom of sheet billet continuous casting and rolling production line top roll, be specially adapted to the travelling platform structure that process furnace transition section adopts, or the place of the temperature difference requirement high (≤10 DEG C) to steel billet, simultaneously owing to adopting Non-water-cooled structure, in use, the body of roll is cooling without water flowing, the thermosteresis that does not have water coolant to take away, therefore can reduce the gas consumption cost of process furnace.
The technical scheme solving the problems of the technologies described above is:
A kind of long-life process furnace billet conveying roller table, its structure comprises the body of roll, roll neck, roll shaft, one end of two roll necks is connected with the two ends of the body of roll respectively, the other end of two roll necks is connected with one end of two roll shafts respectively, two roll shafts are arranged on heating furnace foundation by bearing respectively, its improvements are, the body of roll adopts the thick-walled structure of circular tube shaped, in the outer circumferential walls of the body of roll, there is the collars of multiple annular projections, multiple collars are axially uniformly distributed along the body of roll on the body of roll, the width of collars is 80 ~ 100mm, the upper surface of collars projection exceeds body surface 9-12mm, the junction of collars and the body of roll adopts chamfering transition.
Above-mentioned long-life process furnace billet conveying roller table, described roll neck is waney cylinder, roll neck is connected one end diameter with the body of roll is greater than roll neck is connected one end diameter with roll shaft, the cylinder outer wall of roll neck is from larger diameter end to smaller diameter end rounding off, in the cylinder inner chamber of roll neck, be filled with ceramic fiber cotton, be welded with circular baffle plate at roll neck inner chamber and body of roll inner chamber junction, baffle plate is axially vertical with the body of roll, baffle plate by ceramic fiber cotton shutoff in roll neck inner chamber.
Above-mentioned long-life process furnace billet conveying roller table, the external diameter of roll neck and the internal diameter of the body of roll of described roll neck and body of roll junction match, and roll neck is inserted into body of roll inside, is welded to connect in the outside of the body of roll and roll neck junction.
Above-mentioned long-life process furnace billet conveying roller table, described roll neck has respectively corresponding tapered hole with on the body of roll of body of roll junction and the circumference of roll neck, tapered hole is 3-4, along body of roll circumference uniform distribution, tapered hole is vertical with the circumferential surface of the body of roll and roll neck, and the key that is located by connecting is located by connecting the body of roll and roll neck by the corresponding tapered hole of the body of roll and roll neck respectively.
Above-mentioned long-life process furnace billet conveying roller table, has respectively body of roll venting hole on the roller wall at described body of roll two ends, on the baffle plate of the body of roll and junction, roll neck two ends inner chamber, has respectively flighted rows pore.
Above-mentioned long-life process furnace billet conveying roller table, described roll neck and heating furnace body junction have furnace roller sealing cotton to wrap up roll neck, and the space between heating furnace body and roll neck is stopped up.
Above-mentioned long-life process furnace billet conveying roller table, the roll shaft at described body of roll two ends is arranged on heating furnace foundation by bearing, wherein the roll shaft of one end is fixed, the roll shaft of the other end is connected with the transmission rig of motor and speed reducer, the reserved furnace roller of installing positions of bearings the produced absolute polar expansion amount of being heated.
The beneficial effects of the utility model are:
The body of roll of the present utility model and roll neck all adopt superalloy cast to form, furnace roller does not have water-cooling structure, furnace roller surface temperature is identical with fire box temperature, when slab moves on roller-way, can not reduce the surface temperature of slab, therefore can improve the homogeneity of board briquette, thereby better meet the production requirement of milling train; The body of roll has adopted protruding collars structure, and steel billet only contact with collars, can reduce bonding on furnace roller of iron scale, and alleviation, because iron scale is in the caused mass defect of being pressed into of slab lower surface, effectively ensures quality product; At the inner filling of roll neck ceramic fiber cotton, reduced the heat transfer of high temperature body of roll pair roller neck and roll shaft, thereby reduced the temperature of roll shaft, guarantee that the normal use temperature of the bearing that is arranged on roll shaft position is no more than 80 DEG C; Stop up in roll neck external application furnace roller sealing cotton, can reduce equally high temperature in process furnace to the bearings mounted thermal radiation of furnace roller, guarantee that furnace roller can normally move in rugged environment.
Bulk life time of the present utility model is high, thereby make to change, repair the workload of furnace roller and produce and interrupt greatly reducing, furnace roller is safeguarded and is repaired all simple, furnace roller only needs field assembly bearing, do not have resistance to material to safeguard, setup time shortens greatly than water-cooled furnace roller, and need not dry and preheating, after furnace roller assembling, can come into operation immediately.
The body of roll thermal conductivity of alloy furnace roller of the present utility model is good, thermal capacitance is significantly less than the water-cooled furnace roller of same specification, intensification cooling and time are short, thermal losses is lower than water-cooled furnace roller, the process furnace of same specification can gas saving cost approximately 10%, thereby reach the effect of save energy, there is economic and social benefit widely.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing of Fig. 1.
In figure, mark is as follows: heating furnace foundation 1, transmission rig 2, bearing 3, roll neck 4, heating furnace body 5, the body of roll 6, collars 7, slab 8, baffle plate 9, flighted rows pore 10, body of roll venting hole 11, the key 12 that is located by connecting, ceramic fiber cotton 13, roll shaft 14, furnace roller sealing cotton 15.
Embodiment
The utility model is made up of the body of roll 6, roll neck 4, roll shaft 14, transmission rig 2, bearing 3, the key 12 that is located by connecting, ceramic fiber cotton 13, baffle plate 9, the material of the body of roll 6, roll neck 4, the key 12 that is located by connecting, baffle plate 9 all adopts superalloy Cr28Ni48W5Co3, there is higher high temperature red hardness, high temperature abrasion-resistance, good high temperature oxidation resistance and thermal fatigue resistance characteristic etc.
One end of two roll necks 4 is connected with the two ends of the body of roll 6 respectively, and the other end of two roll necks 4 is connected with one end of two roll shafts 14 respectively, and two roll shafts 14 are arranged on heating furnace foundation 1 by bearing 3 respectively.
In figure, show, the body of roll 6 adopts the thick-walled structure of circular tube shaped, in the outer circumferential walls of the body of roll 6, there is the collars 7 of multiple annular projections, multiple collars 7 are axially uniformly distributed along the body of roll 6 on the body of roll 6, the width of collars 7 is 80 ~ 100mm, and the upper surface of collars 7 projections exceeds the surperficial 9-12mm of the body of roll 6, and collars 7 adopts chamfering transition with the junction of the body of roll 6, reduce stress concentration, collars external diameter is greater than the external diameter of the water-cooled furnace roller collars of same specification.
The final thickness of the body of roll 6 of an embodiment of the present utility model is 22mm, and the smooth finish on collars 7 surfaces is 6.3, and collars 7 exceeds 10mm than the body of roll 6.
In figure, show, roll neck 4 is waney cylinder, and roll neck 4 is connected one end diameter with the body of roll 6 is greater than roll neck 4 is connected one end diameter with roll shaft 14, and the cylinder outer wall of roll neck 4 is from larger diameter end to smaller diameter end rounding off.
The rounding off of the roll neck 4 of an embodiment of the present utility model adopts two arcuate structures, and arc radius is respectively 150mm and 300mm.
In figure, show, in the cylinder inner chamber of roll neck 4, be filled with ceramic fiber cotton 13, be used for reducing the heat transfer of the high temperature body of roll 6 to roll neck 4 and roll shaft 14, thereby reduce the temperature of roll shaft 14, guarantee that the normal use temperature of the bearing 3 that is arranged on roll shaft 14 positions is no more than 80 DEG C.Be welded with circular baffle plate 9 at roll neck 4 inner chambers and the body of roll 6 inner chamber junctions, baffle plate 9 and the body of roll 6 is axially vertical, baffle plate 9 by ceramic fiber cotton 13 shutoff in roll neck 4 inner chambers.
In figure, show, roll neck 4 and the body of roll 6 adopt the key 12 that is located by connecting to be located by connecting and welding connection structure.
On the circumference of roll neck 4 and the body of roll 6 of the body of roll 6 junctions, there is respectively 3-4 tapered hole, tapered hole is vertical with the body of roll 6 circumferential surfaces, 3-4 tapered hole is along the body of roll 6 circumference uniform distributions, on the correspondence position of roll neck 4 and the roll neck 4 of the body of roll 6 junctions, there is respectively the tapered hole of same quantity, the tapered hole of the body of roll 6 and roll neck 4 Corresponding matching one by one, the key 12 that is located by connecting is located by connecting the body of roll 6 and roll neck 4 by the corresponding tapered hole of the body of roll 6 and roll neck 4 respectively.
Roll neck 4 matches with the external diameter of roll neck 4 and the internal diameter of the body of roll 6 of the body of roll 6 junctions, and roll neck 4 is inserted into the body of roll 6 inside, is welded to connect in the body of roll 6 and the outside of roll neck 4 junctions.
In figure, show, the other end of roll neck 4 is connected with roll shaft 14, and mode of connection is that hot charging is joined, and welding fabrication, and roll shaft 14 materials are S304, adopts forging forming.
In figure, show there is respectively body of roll venting hole 11 on the roller wall at the body of roll 6 two ends, on the baffle plate 9 of the body of roll 6 and roll neck 4 junction, two ends inner chambers, have respectively flighted rows pore 10, for discharging the hot gas in the body of roll 6.
In figure, show, roll neck 4 has the cotton 15 pairs of roll necks 4 of furnace roller sealing to wrap up with heating furnace body 5 junctions, and the space between 4 of heating furnace body 5 and roll neck is stopped up, and can reduce the thermal radiation of high temperature in the process furnace bearing 3 to heating furnace body 5.
In figure, show, the roll shaft 14 at the body of roll 6 two ends is arranged on heating furnace foundation 1 by bearing 3, wherein the roll shaft 14 of one end is fixing, and the roll shaft 14 of the other end is connected with the transmission rig of motor and speed reducer, and furnace roller the produced absolute polar expansion amount of being heated is reserved in bearing 3 installation sites.
The utility model can ensure safety in production, improves the operational efficiency of equipment, reduces maintenance of equipment work amount simultaneously, reduces labour intensity, improves workman's labor condition, has very large economic and social benefit.
Claims (7)
1. a long-life process furnace billet conveying roller table, its structure comprises the body of roll (6), roll neck (4), roll shaft (14), one end of two roll necks (4) is connected with the two ends of the body of roll (6) respectively, the other end of two roll necks (4) is connected with one end of two roll shafts (14) respectively, two roll shafts (14) are arranged on heating furnace foundation (1) by bearing (3) respectively, it is characterized in that: the body of roll (6) adopts the thick-walled structure of circular tube shaped, in the outer circumferential walls of the body of roll (6), there is the collars (7) of multiple annular projections, multiple collars (7) are axially uniformly distributed along the body of roll (6) on the body of roll (6), the width of collars (7) is 80 ~ 100mm, the upper surface of collars (7) projection exceeds the surperficial 9-12mm of the body of roll (6), collars (7) adopts chamfering transition with the junction of the body of roll (6).
2. long-life process furnace billet conveying roller table according to claim 1, it is characterized in that: described roll neck (4) is waney cylinder, roll neck (4) is connected one end diameter with the body of roll (6) is greater than roll neck (4) is connected one end diameter with roll shaft (14), the cylinder outer wall of roll neck (4) is from larger diameter end to smaller diameter end rounding off, in the cylinder inner chamber of roll neck (4), be filled with ceramic fiber cotton (13), be welded with circular baffle plate (9) at roll neck (4) inner chamber and the body of roll (6) inner chamber junction, baffle plate (9) is axially vertical with the body of roll (6), baffle plate (9) by ceramic fiber cotton (13) shutoff in roll neck (4) inner chamber.
3. long-life process furnace billet conveying roller table according to claim 2, it is characterized in that: described roll neck (4) matches with the external diameter of roll neck (4) and the internal diameter of the body of roll (6) of the body of roll (6) junction, roll neck (4) is inserted into the body of roll (6) inside, is welded to connect in the body of roll (6) and the outside of roll neck (4) junction.
4. long-life process furnace billet conveying roller table according to claim 3, it is characterized in that: described roll neck (4) has respectively corresponding tapered hole with on the body of roll (6) of the body of roll (6) junction and the circumference of roll neck (4), tapered hole is 3-4, along the circumference uniform distribution of the body of roll (6) and roll neck (4), tapered hole is vertical with the circumferential surface of roll neck (4) with the body of roll (6), and the key that is located by connecting (12) is located by connecting the body of roll (6) and roll neck (4) by the corresponding tapered hole of the body of roll (6) and roll neck (4) respectively.
5. long-life process furnace billet conveying roller table according to claim 4, it is characterized in that: on the roller wall at the described body of roll (6) two ends, have respectively body of roll venting hole (11), on the baffle plate (9) of the body of roll (6) and roll neck (4) junction, two ends inner chamber, have respectively flighted rows pore (10).
6. long-life process furnace billet conveying roller table according to claim 5, it is characterized in that: described roll neck (4) has furnace roller sealing cotton (15) to wrap up roll neck (4) with heating furnace body (5) junction, and the space between heating furnace body (5) and roll neck (4) is stopped up.
7. long-life process furnace billet conveying roller table according to claim 6, it is characterized in that: the roll shaft (14) at the described body of roll (6) two ends is arranged on heating furnace foundation (1) by bearing (3), wherein the roll shaft of one end (14) is fixing, the roll shaft (14) of the other end is connected with the transmission rig (2) of motor and speed reducer, the reserved furnace roller in bearing (3) installation site the produced absolute polar expansion amount of being heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420296002.5U CN203923311U (en) | 2014-06-05 | 2014-06-05 | A kind of long-life process furnace billet conveying roller table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420296002.5U CN203923311U (en) | 2014-06-05 | 2014-06-05 | A kind of long-life process furnace billet conveying roller table |
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| Publication Number | Publication Date |
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| CN203923311U true CN203923311U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420296002.5U Expired - Fee Related CN203923311U (en) | 2014-06-05 | 2014-06-05 | A kind of long-life process furnace billet conveying roller table |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017983A (en) * | 2014-06-05 | 2014-09-03 | 河北钢铁股份有限公司唐山分公司 | Long-life steel billet conveying roller way for heating furnace |
| CN111971401A (en) * | 2018-04-02 | 2020-11-20 | 株式会社则武 | Transfer roll for heating furnace |
| CN113218181A (en) * | 2021-04-19 | 2021-08-06 | 武汉理工大学 | Furnace bottom roller and nodule online prevention and removal device suitable for roller-bottom type heating furnace |
-
2014
- 2014-06-05 CN CN201420296002.5U patent/CN203923311U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017983A (en) * | 2014-06-05 | 2014-09-03 | 河北钢铁股份有限公司唐山分公司 | Long-life steel billet conveying roller way for heating furnace |
| CN111971401A (en) * | 2018-04-02 | 2020-11-20 | 株式会社则武 | Transfer roll for heating furnace |
| CN113218181A (en) * | 2021-04-19 | 2021-08-06 | 武汉理工大学 | Furnace bottom roller and nodule online prevention and removal device suitable for roller-bottom type heating furnace |
| CN113218181B (en) * | 2021-04-19 | 2023-09-26 | 武汉理工大学 | Furnace bottom roller and nodulation on-line preventing and removing device suitable for roller bottom type heating furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 063016 Binhe Road, Hebei, Tangshan City, No. 9 Patentee after: HBIS COMPANY LIMITED TANGSHAN BRANCH Address before: 063016 Binhe Road, Hebei, Tangshan City, No. 9 Patentee before: Tangshan Branch of Hebei Iron & Steel Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 |