CN101571354A - Surfacing compound furnace roller - Google Patents
Surfacing compound furnace roller Download PDFInfo
- Publication number
- CN101571354A CN101571354A CNA2009103022976A CN200910302297A CN101571354A CN 101571354 A CN101571354 A CN 101571354A CN A2009103022976 A CNA2009103022976 A CN A2009103022976A CN 200910302297 A CN200910302297 A CN 200910302297A CN 101571354 A CN101571354 A CN 101571354A
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- roller
- surfacing
- roll
- furnace roller
- furnace
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Abstract
The invention discloses a surfacing compound furnace roller transporting billets to a heating furnace. The surfacing compound furnace roller comprises a roller shaft and a roller body, wherein, the roller body is fixed on the roller shaft by roller shoulders at the two ends; the roller body is provided with an air hole; a surfacing layer is arranged on the roller body. The invention changes the originally single casting body into a complex of casting, forging and surfacing. During the process of surfacing and compounding, fusion bonding is carried out on the welding materials and the roller body to form the surfacing layer which has a stable material structure and fine crystal grains. In use, the surfacing compound furnace roller eliminates worldwide problems such as roller surface accretion, dead burning and the like in steel industry; simultaneously, surfacing can be continued after the surfacing layer is worn, thus corresponding with the development requirement of recycling economy and improving the service life of the furnace roller.
Description
Technical field
The present invention relates to transport in the equipment, particularly heating furnace in a kind of heater for rolling steel the roller-way of steel billet.
Background technology
At present, in the walking beam furnace at home and abroad, going into stove and coming out of the stove of blank generally all adopts roller-way to take on steel, steel billet is sent in the stove by the dress steel rider road in the stove, by step rate steel billet is delivered to from the charging end stepping in the stove of discharge end on the tapping roller-way, finish the heating process of steel billet simultaneously, then it is sent heating furnace and be rolled by tapping roller-way in the stove.China's roll manufacturing industry has obtained than good result, but has not caught up with the steel and iron industry technological progress fully in the breed structure adjustment through the development of decades, the paces that structure optimization is adjusted, and high-end roll production capacity is obviously not enough.Big shaped steel enterprise such as Baosteel, Anshan iron and steel plant wide plate hoop mill every year all will be from external import roll, and this reflects that the overall manufacture level of China's roll awaits further to improve.Therefore, for being equipped with high performance roll, present-day mill becomes the new problem that China's roll manufacturing industry faces.Under the normal condition, heating furnace work temperature is all more than 950 ℃, and furnace roller is the groundwork body in the heating furnace, particularly guarantees the service behaviour of hearth roll under hot conditions, improves its service life.At present, the product that industry is used is a casting roll, because casting is difficult to avoid producing segregation, it is very common in use to produce dross, crackle, 12 months service life of inlet roller, 10 months service life of homemade roller, and also furnace roller can only melt down casting again after wearing and tearing, increase the production cost of steel mill so greatly, do not met " minimizing, utilize again, recycle, make again " development principle of recycling economy.
Summary of the invention
The object of the invention is to provide a kind of surfacing compound furnace roller of new structure, and the single cast body of script is become casting, forging and built-up welding complex.Making the welding material and the body of roll carry out second melting in the built-up welding recombination process combines, form the overlay cladding that materials microstructure is stable, crystal grain is tiny, in use eliminate the global problem of steel industries such as roll surface dross, steel bonding, met the requirement of recycling economy development simultaneously.
The technical scheme that realizes the object of the invention is:
A kind of surfacing compound furnace roller comprises the roll shaft and the body of roll, and the described body of roll is fixed on the described roll shaft by the shaft shoulder at two ends, and the described body of roll is provided with air-vent, it is characterized in that: an overlay cladding is arranged on the described body of roll.
Between the described roll shaft and the body of roll, be provided with the insulation layer.
The percentage by weight of each composition of described overlay cladding is: C is that 0.15--0.25%, Si are that 1.5--2.5%, Mn are that 1.0--1.4%, Cr are that 20--28%, Ni are that 6-8%, N are that 0.1-0.14%, Re are 0.08-0.12%, and all the other are Fe.
The present invention compared with prior art has following advantage:
1. with the original single compound submerged arc overlay welding combination process that changes into of casting, avoid cast article segregation etc. to influence the defective of serviceability, the automatic surfacing technology makes the welding material and the body of roll carry out second melting and combines, form compound working lining--the overlay cladding that materials microstructure is stable, crystal grain is tiny, eliminate the global problem that furnace roller in use is easy to generate steel industries such as steel bonding, dross; Serviceability surpasses casting, forged material product simultaneously, has high strength, high tenacity, high-wearing feature, and furnace roller reaches more than 18 months service life.
2. after overlay cladding wearing and tearing, can continue built-up welding on the body of roll, so the body of roll can obtain recyclingly, meet the requirement of recycling economy development, reduce the production cost of steel mill significantly.
3. between the described roll shaft and the body of roll, be provided with the insulation layer, the simple temperature of roll shaft, the service life of having improved roll shaft.
Description of drawings
Fig. 1 is the structural representation of surfacing compound furnace roller of the present invention
1. roll shaft 2. bodies of roll 3. shaft shoulders 4. insulation layers 5. air-vent 6. overlay claddings
The specific embodiment
As can be seen from Figure 1, a kind of surfacing compound furnace roller, comprise the roll shaft 1 and the body of roll 2, the described body of roll is fixed on the described roll shaft 1 by the shaft shoulder 3 at two ends, between the described roll shaft 1 and the body of roll 2, be provided with insulation layer 4, the described body of roll 2 is provided with air-vent 5, and an overlay cladding 6 is arranged on the described body of roll 2.
Select welding material according to the instructions for use of furnace roller product in process of production, with welding material according to technological specification built-up welding on the body of roll 2, in weld deposit process with the body of roll 2 second meltings, the overlay cladding 6 that formation is thinner than cast body texture, structure is more closely knit, overlay cladding 6 and the body of roll 2 be combined into the metallurgical binding structure.
The percentage by weight of each composition of described overlay cladding is: C is that 0.15--0.25%, Si are that 1.5--2.5%, Mn are that 1.0--1.4%, Cr are that 20--28%, Ni are that 6-8%, N are that 0.1-0.14%, Re are 0.08-0.12%, and all the other are Fe.
Claims (3)
1. surfacing compound furnace roller, comprise the roll shaft (1) and the body of roll (2), the described body of roll is fixed on the described roll shaft (1) by the shaft shoulder (3) at two ends, and the described body of roll (2) is provided with air-vent (5), it is characterized in that: an overlay cladding (6) is arranged on the described body of roll (2).
2. a kind of surfacing compound furnace roller according to claim 1 is characterized in that: be provided with insulation layer (4) between the described roll shaft (1) and the body of roll (2).
3. a kind of surfacing compound furnace roller according to claim 1, it is characterized in that: the percentage by weight of described each composition of overlay cladding is: C is that 0.15--0.25%, Si are that 1.5--2.5%, Mn are that 1.0--1.4%, Cr are that 20--28%, Ni are that 6-8%, N are that 0.1-0.14%, Re are 0.08-0.12%, and all the other are Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009103022976A CN101571354A (en) | 2009-05-14 | 2009-05-14 | Surfacing compound furnace roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009103022976A CN101571354A (en) | 2009-05-14 | 2009-05-14 | Surfacing compound furnace roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101571354A true CN101571354A (en) | 2009-11-04 |
Family
ID=41230770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009103022976A Pending CN101571354A (en) | 2009-05-14 | 2009-05-14 | Surfacing compound furnace roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101571354A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152020A (en) * | 2011-01-31 | 2011-08-17 | 山东博润工业技术有限公司 | Coating powder for submerged arc surfacing of low-carbon steel and application method thereof |
| 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 |
| CN105149882A (en) * | 2015-09-18 | 2015-12-16 | 江苏盛日机械设备制造有限公司 | High-strength high-alloy furnace roller production equipment system |
-
2009
- 2009-05-14 CN CNA2009103022976A patent/CN101571354A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152020A (en) * | 2011-01-31 | 2011-08-17 | 山东博润工业技术有限公司 | Coating powder for submerged arc surfacing of low-carbon steel and application method thereof |
| CN102152020B (en) * | 2011-01-31 | 2013-05-08 | 山东博润工业技术股份有限公司 | Coating powder for submerged arc surfacing of low-carbon steel and application method thereof |
| 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 |
| CN105149882A (en) * | 2015-09-18 | 2015-12-16 | 江苏盛日机械设备制造有限公司 | High-strength high-alloy furnace roller production equipment system |
| CN105149882B (en) * | 2015-09-18 | 2017-08-15 | 江苏盛日机械设备制造有限公司 | High intensity high alloy furnace roller production equipment system |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091104 |