CN202547393U - Heat-resistant metal collar for CSP (compact strip production) heating furnace roller - Google Patents
Heat-resistant metal collar for CSP (compact strip production) heating furnace roller Download PDFInfo
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- CN202547393U CN202547393U CN2012201647547U CN201220164754U CN202547393U CN 202547393 U CN202547393 U CN 202547393U CN 2012201647547 U CN2012201647547 U CN 2012201647547U CN 201220164754 U CN201220164754 U CN 201220164754U CN 202547393 U CN202547393 U CN 202547393U
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Abstract
The utility model discloses a heat-resistant metal collar for a CSP (compact strip production) heating furnace roller. The heat-resistant metal collar comprises collar units which are uniformly distributed along the circumference direction of the furnace roller. Each collar unit consists of a circular arc and toothed rib plates, and the toothed rib plates are respectively arranged at two axial ends of the circular arc, a reinforcing plate is arranged between the toothed rib plates at two axial ends of the circular arc, and the top end of each toothed rib plate and the lower end of the reinforcing plate are respectively fixedly connected with the outer surface of furnace roller. The heat-resistant metal collar is simple in structure, easy to manufacture, convenient to use and maintain and low in cost. The service temperature of the metal collar can be 1300 DEG C, and thus, the performance requirement of the heat-resistant metal collar for the CSP heating furnace roller is met. The heat-resistant metal collar is widely applied to the technical field of thermal equipment for industrial furnaces.
Description
Technical field
The utility model relates to industrial furnace Thermal Equipment technical field, refers to that particularly a kind of CSP (CSP) heating furnace roller uses the heating resisting metal collars.
Background technology
Furnace roller is most important, the most flimsy key equipment in CSP (Compact Strip Production, close-coupled output strip line) the roller hearth type heating furnace plant equipment, and its online amount is big, price is high, the life-span is low.Furnace roller is the axis water cooled rolls; Heating resisting metal collars through the wide about 80mm of the circle of 4 on the body of roll carries out the support of thin plate strand; Through the positive and negative rotation of furnace roller and the adjusting of rotating speed, accomplish the strand control of conveying, buffering and the heat time heating time in stove, furnace roller and strand noncontact part all adopt refractory material heat insulation layer parcel; Reduce furnace roller water-cooled heat loss, improve intensity and rigidity under the furnace roller high temperature service condition.This shows that in furnace roller constituted, 4 heating resisting metal collars conditions of work of carrying strand were the most abominable; It is the fragile member of furnace roller; Simultaneously, because expensive price and the strict demanding CSP roller hearth type heating furnace of processing technology requirement, especially steel grade heating-up temperature of collars of heating resisting metal; Because of heat-resisting alloy constituent content height, processing and preparing difficult technique etc.; Causing heating resisting metal collars cost high, is the main composition of furnace roller integrated cost, has seriously restricted the performance of CSP production technology production and operation benefits.Domestic import furnace roller collars structure commonly used is shown in Fig. 1～3, and said furnace roller collars comprises the collars split 1 that six edges circumferentially are uniformly distributed with, and said collars split 1 is welded on the outer wall of furnace roller 3.Collars split 1 is made up of dentation gusset 11 and circular arc ring 12; Said dentation gusset 11 is located on the circular arc ring 12 axial intermediate cross-sections; This structure causes circular arc ring 12 axial edge temperature far above circular arc ring 12 axial centre temperature; It is serious that 12 edge abrasions of circular arc ring are ablated, and collars dross, collars service life is low, the water-cooled heat loss big, the steel billet heating quality is poor.For this reason, domestic relevant scholar has carried out the research that furnace roller domesticizes from calendar year 2001, and core key technology is exactly the development of heating resisting metal collars; Successively be directed against the demand of different steel grade CSP roller hearth type heating furnaces; Carried out the research of collars heat-resisting allay material and collars structure,, improved the collars high-temperature behavior to reduce collars cost of manufacture and water-cooled heat loss; Prolong collars service life, improve steel billet heating quality etc.As: document " Baogang's science and technology " has published by Feng Liyi, Zhou Jianping and Zhang Qian and has write, and name is called the technical papers (2004,30 (2)) of " development of CSP heating furnace roller collars "; Reported production domesticization and the applicable cases of collars with the heating resisting metal material; Through material analysis, in guaranteeing steel, under the situation of main components such as C, Ni, Cr, adopt the mass fraction of adjusting microalloy Nb, Mo, Ti, Co, Al, Si and the smelting means that reduce S, P in the steel to import Germany LOI company collars; Accomplished the exploitation of collars heat-resisting alloy; And under the condition that does not change the collars structure, obtained the effect identical with the import collars, make the collars cost reduce by 2/3; But the user demand of higher furnace temperature can not be satisfied in the highest furnace temperature≤1200 that collars adapts to ℃.A patent No. is that ZL200920304606.9, utility model name are called the Chinese patent of " heat-resisting collars "; Disclose a kind of CSP heating furnace roller and used heat-resisting collars, it is characterized in that having on the roll shaft collars split of equally distributed four same sizes, collars divides body structure and import collars commonly used identical; But six equal portions collars splits than import are compared; Reduce collars split quantity, thereby alleviated the processing intensity of collars, adopted Cr35Ni55W9Al2 material collars; Improve the anti-wear performance and the high-temperature oxidation resistance of collars, can adapt to the user demand of 1150～1350 ℃ of furnace temperature; But collars split volume increases, and has increased the difficulty of heat-resisting alloy casting quality assurance, and simultaneously, the precious metal element of superelevation content causes the collars price sharply to rise, and does not see the report that actual production is used at present.Number of patent application is 201010140148.7, the utility model name is called the one Chinese patent application of " collars of roller hearth furnace furnace roller "; A kind of roller hearth furnace furnace roller is disclosed with a ceramic heat resistance steel composite roll collar; Use through ceramic outer ring; Improve collars elevated temperature strength, heat crack resistance, anti-wear performance, the erosion of anti-oxidant iron and adhesive property, reduce comprehensive heat conductivility of collars and steel billet heating " black seal ", improve the steel billet heating quality; But the brittle ceramic materials mechanical shock resistance is not enough, in the slab course of conveying, under the strong effect of impact, will cause the mechanical damage of ceramic outer ring, influences its practical effect, does not see the report that actual production is used at present.In addition; Italy Dexing company adopts Co50 heat-resisting alloy collars; And an international application no is that PCT/US94/03199, international publication number are that WO94/21978, utility model name are called the European patent of " the high temperature roller hearth type heating furnace is used furnace roller ", discloses multiple high temperature roller hearth type heating furnace and used the furnace roller structure, all adopts heat-resisting alloy to make collars; Through multiple multi-form furnace roller thermal insulation lining structure, water-cooling channel structure and collars structure Design; Reach the heat insulation and collars cooling effect of strengthening the body of roll, improve furnace roller serviceability temperature scope, satisfy the user demand of high temperature roller hearth type heating furnace; But furnace roller water-cooling channel, collars and heat shield liner complex structure, manufacture difficulty are big, cause the furnace roller integrated cost high; Simultaneously, the reinforcement of collars cooling simultaneously causes furnace roller water-cooled heat loss big, is unfavorable for that roller hearth type heating furnace is energy-conservation.Domestic once had this technology furnace temperature less than 1200 ℃ CSP roller hearth type heating furnace on report on probation, but because of service life and cost is undesirable abandons.In sum; Collars material and collars processing and manufacturing difficulty are only considered in related patent U.S. Patent No. and technical research both at home and abroad; All do not relate to the influence research contents of collars structure to the collars serviceability; Thereby, improve collars high-temperature adaptability, to prolong collars service life, reduce collars cost of manufacture, difficulty of processing and improve the collars serviceability will be the key technology that the furnace roller complex art is studied.
Summary of the invention
The purpose of the utility model be exactly to provide that a kind of simple in structure, convenient manufacturing, working service are convenient, with low cost, serviceability temperature can reach 1300 ℃ CSP heating furnace roller and use the heating resisting metal collars.
For realizing above-mentioned purpose; A kind of CSP heating furnace roller that the utility model designed is used the heating resisting metal collars; Comprise the collars split that circumferentially is uniformly distributed with continuously along furnace roller; Said collars split is combined by circular arc ring and the dentation gusset that is arranged on the axial two ends of circular arc ring, is provided with stiffener between the dentation gusset at the axial two ends of said circular arc ring, and the top of said dentation gusset all is fixedly connected with the furnace roller outer surface with the lower end of stiffener.
As preferred version, the axial width of said dentation gusset is 1/4～1/3 of a circular arc ring axial width.
Further, the axial width of said dentation gusset is 2/7 of a circular arc ring axial width.
Again further, the number of teeth on the dentation gusset at the axial two ends of said circular arc ring is two; The quantity that is arranged on the stiffener between them accordingly also is two.
Also further, said collars split is provided with six.
Further, said circular arc ring and dentation gusset adopt Co20 heat-resisting alloy casting or welding fabrication; Said stiffener adopts Cr25Ni20 or Cr28Ni48 heat-resisting allay material casting.
Further, said circular arc ring and dentation gusset adopt Co20 heat-resisting alloy casting or welding fabrication; Said stiffener adopts Cr25Ni20 or Cr28Ni48 heat-resisting allay material casting.
Further, the lower end of the top of said dentation gusset and stiffener all is welded to connect with the furnace roller outer surface.
The operation principle of the utility model is such: be located on the circular arc ring axial end and the axial width of each dentation gusset is 1/4～1/3 design of circular arc ring axial width through the dentation gusset; The collars split becomes hollow in the mid-depth zone; Reduced the water-cooled heat transfer rate in the circular arc ring mid-depth zone of collars split; And the heat transfer effect through the dentation gusset, strengthen the water-cooled heat transfer rate of circular arc ring axial edge, thereby improved circular arc ring surface circumferentially and the axial temperature uniformity; Overcome the defective of the circular arc ring axial edge temperature of conventional collars structure far above central temperature; Improved the anti-damage capability at circular arc ring edge, reduced the black seal of the steel billet water-cooled temperature difference and collars dross speed, reach prolong collars service life, reduction water-cooled heat loss, the purpose such as steel billet heating quality of improving.Simultaneously, through the numerical simulation calculation analysis, under 1300 ℃ of furnace temperature conditions of CSP heating furnace, compare with conventional collars structure, the utility model maximum temperature can reduce more than 100 ℃, is equivalent to the serviceability temperature of collars has been improved more than 100 ℃.Simultaneously; The dentation gusset circumferential width and radial thickness, circular arc ring external diameter and radially all consistent with the metal collars that keep the collars split with import CSP heating furnace roller commonly used with axial width; Help under routine processing casting technique condition, guaranteeing the processing and fabricating quality of collars split.Between the dentation gusset at the axial two ends of circular arc ring, weld stiffener, and its lower end is fixedly connected with the furnace roller outer surface all, can plays the effect of reinforcing.And adopt Cr25Ni20 or Cr28Ni48 heat-resisting allay material casting, and not only can reduce the consumption of collars high price heat-resisting allay material, reduce the alloy material cost, and can guarantee that collars obtains a balance between comprehensive integral intensity and use cost.Through above-mentioned measure, satisfy of the serviceability requirement of CSP heating furnace roller with the heating resisting metal collars.
The advantage of the utility model is: simple in structure, convenient manufacturing, working service are convenient, with low cost, serviceability temperature can reach 1300 ℃, satisfy the serviceability requirement of CSP heating furnace roller with the heating resisting metal collars.
Description of drawings
Fig. 1 is the main TV structure sketch map of existing collars;
Fig. 2 is the split structural representation of collars shown in Figure 1;
Fig. 3 is the structural representation of O-A section among Fig. 2;
Fig. 4 is the main TV structure sketch map of the utility model CSP heating furnace roller with the heating resisting metal collars;
Fig. 5 is the structural representation of O-B section among Fig. 4;
Fig. 6 is the structural representation of O-C section among Fig. 4;
Fig. 7 is the structural representation of D-D section among Fig. 5.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to describe in detail:
Fig. 1 CSP heating furnace roller to the prior art shown in Figure 3 has been done detailed introduction with the metallic roll ring structure in background technology, repeat no more at this.
Referring to Fig. 4 to Fig. 7, the CSP heating furnace roller of the utility model is used the heating resisting metal collars, comprises collars split 1 and stiffener 2.
Said collars split 1 has multi-disc; Circumferentially be uniformly distributed with setting continuously along roll shaft 3, in the present embodiment, the CSP heating furnace roller comprises six measure-alike collars splits 1 altogether with the heating resisting metal collars; Every collars split 1 radian is 60 °, adopts Co20 heat-resisting alloy casting.Said collars split 1 is made up of dentation gusset 11 and circular arc ring 12; Said dentation gusset 11 is located at circular arc ring 12 axial two ends; In the present embodiment; The axial width of said dentation gusset 11 is 1/4～1/3 of circular arc ring 12 axial widths, and in optimum embodiment, the axial width of said dentation gusset 11 is 2/7 of circular arc ring 12 axial widths.Said stiffener 2 is located between the dentation gusset 11 at circular arc ring 12 axial two ends; And its lower end all is fixedly connected with furnace roller 3 outer surfaces, plays reinforcement effect, in the present embodiment; Stiffener 2 adopts Cr25Ni20 or Cr28Ni48 heat-resisting allay material casting; Adopt these heat-resisting allay materials not only can reduce the consumption of collars high price heat-resisting allay material, practice thrift the alloy material cost, and can guarantee that collars obtains a balance between comprehensive integral intensity and use cost.When making said collars split 1; Dentation gusset 11 circumferential width, radial thickness, circular arc ring 12 external diameters and radially all identical that keep collars split 1 with import collars commonly used with axial width; Help guaranteeing the processing and fabricating quality of collars split 1 under the conventional processing casting technique condition.
The axial width of being located at circular arc ring 12 axial two ends and dentation gusset 11 through dentation gusset 11 is 1/4～1/3 design of circular arc ring 12 axial widths; Collars split 1 becomes hollow in the mid-depth zone; Reduced the water-cooled heat transfer rate in the circular arc ring 12 mid-depths zone of collars split 1; And the heat transfer effect through dentation gusset 11, strengthen the water-cooled heat transfer rate of circular arc ring 12 axial edge, thereby improved circular arc ring 12 surfaces circumferentially and the axial temperature uniformities; Overcome the defective of the circular arc ring 12 axial edge temperature of conventional collars structure far above central temperature; Improved the anti-damage capability at circular arc ring 12 edges, reduced the black seal of the steel billet (not shown) water-cooled temperature difference and collars dross speed, reach prolong collars service life, reduction water-cooled heat loss, the purpose such as steel billet heating quality of improving.Simultaneously, through the numerical simulation calculation analysis, under 1300 ℃ of furnace temperature conditions of CSP heating furnace, compare with conventional collars structure, the utility model maximum temperature can reduce more than 100 ℃, is equivalent to the serviceability temperature of collars has been improved more than 100 ℃.
Claims (9)
1. a CSP heating furnace roller is used the heating resisting metal collars; Comprise the collars split (1) that circumferentially is uniformly distributed with continuously along furnace roller (3); It is characterized in that: said collars split (1) by circular arc ring (12) and be arranged on circular arc ring (12) axially the dentation gusset (11) at two ends combine; Be provided with stiffener (2) between the dentation gusset (11) at the axial two ends of said circular arc ring (12), the lower end of the top of said dentation gusset (11) and stiffener (2) all is fixedly connected with furnace roller (3) outer surface.
2. CSP heating furnace roller according to claim 1 is used the heating resisting metal collars, it is characterized in that: the axial width of said dentation gusset (11) is 1/4～1/3 of circular arc ring (a 12) axial width.
3. CSP heating furnace roller according to claim 1 is used the heating resisting metal collars, it is characterized in that: the axial width of said dentation gusset (11) is 2/7 of circular arc ring (a 12) axial width.
4. use the heating resisting metal collars according to claim 1 or 2 or 3 described CSP heating furnace rollers, it is characterized in that: the number of teeth on the dentation gusset (11) at the axial two ends of said circular arc ring (12) is two; The quantity that is arranged on the stiffener (2) between them accordingly also is two.
5. CSP heating furnace roller according to claim 4 is used the heating resisting metal collars, it is characterized in that: said collars split (1) is provided with six.
6. use the heating resisting metal collars according to claim 1 or 2 or 3 described CSP heating furnace rollers, it is characterized in that: said circular arc ring (12) and dentation gusset (11) adopt Co20 heat-resisting alloy casting or welding fabrication; Said stiffener (2) adopts Cr25Ni20 or Cr28Ni48 heat-resisting allay material casting.
7. CSP heating furnace roller according to claim 4 is used the heating resisting metal collars, it is characterized in that: said circular arc ring (12) and dentation gusset (11) adopt Co20 heat-resisting alloy casting or welding fabrication; Said stiffener (2) adopts Cr25Ni20 or Cr28Ni48 heat-resisting allay material casting.
8. use the heating resisting metal collars according to claim 1 or 2 or 3 described CSP heating furnace rollers, it is characterized in that: the lower end of the top of said dentation gusset (11) and stiffener (2) all is welded to connect with furnace roller (3) outer surface.
9. CSP heating furnace roller according to claim 4 is used the heating resisting metal collars, it is characterized in that: the lower end of the top of said dentation gusset (11) and stiffener (2) all is welded to connect with furnace roller (3) outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201647547U CN202547393U (en) | 2012-04-18 | 2012-04-18 | Heat-resistant metal collar for CSP (compact strip production) heating furnace roller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201647547U CN202547393U (en) | 2012-04-18 | 2012-04-18 | Heat-resistant metal collar for CSP (compact strip production) heating furnace roller |
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| CN202547393U true CN202547393U (en) | 2012-11-21 |
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| CN2012201647547U Expired - Fee Related CN202547393U (en) | 2012-04-18 | 2012-04-18 | Heat-resistant metal collar for CSP (compact strip production) heating furnace roller |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540804A (en) * | 2013-11-01 | 2014-01-29 | 武汉钢铁(集团)公司 | Low-cost thermochrome and preparation method thereof and soaking pit furnace roller collar and furnace bottom roller manufactured by low-cost thermochrome |
| CN103673627A (en) * | 2013-10-29 | 2014-03-26 | 浦杰 | Roller collar of water-cooling furnace roller of soaking furnace and manufacturing method thereof |
| CN109763067A (en) * | 2019-01-25 | 2019-05-17 | 江苏苏冶新材料科技有限公司 | CSP tunnel type roller bottom hearth roll collars and preparation method thereof |
-
2012
- 2012-04-18 CN CN2012201647547U patent/CN202547393U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673627A (en) * | 2013-10-29 | 2014-03-26 | 浦杰 | Roller collar of water-cooling furnace roller of soaking furnace and manufacturing method thereof |
| CN103540804A (en) * | 2013-11-01 | 2014-01-29 | 武汉钢铁(集团)公司 | Low-cost thermochrome and preparation method thereof and soaking pit furnace roller collar and furnace bottom roller manufactured by low-cost thermochrome |
| CN103540804B (en) * | 2013-11-01 | 2016-04-27 | 武汉钢铁(集团)公司 | The soaking pit collars that low-cost heat-resisting nichrome and preparation method make with it and furnace bottom roll |
| CN109763067A (en) * | 2019-01-25 | 2019-05-17 | 江苏苏冶新材料科技有限公司 | CSP tunnel type roller bottom hearth roll collars and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171025 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20190418 |
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| CF01 | Termination of patent right due to non-payment of annual fee |