CN201271649Y - Improved apparatus of secondary screw-thread steel rolling mill - Google Patents
Improved apparatus of secondary screw-thread steel rolling mill Download PDFInfo
- Publication number
- CN201271649Y CN201271649Y CNU2008201723794U CN200820172379U CN201271649Y CN 201271649 Y CN201271649 Y CN 201271649Y CN U2008201723794 U CNU2008201723794 U CN U2008201723794U CN 200820172379 U CN200820172379 U CN 200820172379U CN 201271649 Y CN201271649 Y CN 201271649Y
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- rolling
- steel
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- thread steel
- secondary screw
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Abstract
The utility model belongs to the technical field of steel rolling, in particular to an improved device of a secondary deformed steel rolling machine. The technical proposal of the utility model is as follows: the improved device of a secondary deformed steel rolling machine comprises a No. 18 rolling mill, a No. 3 flying shear as well as a settling tank, a cooling tower, a water pump and a water passing cooling device, wherein, the water passing cooling device is arranged between the No.18 rolling mill and the No. 3 flying shear; and the water passing cooling device, the settling tank, the cooling tower and the water pump are connected orderly through the matching of pipelines. By controlling the different cooling speed after rolling the rolling piece, the organization and the performance of the steel material are controlled; the strength of the steel material is further improved through controlling the cooling under the precondition of not lowering the toughness of the rolling piece, thus shortening the cooling time of the thermal steel rolling. material.
Description
Technical field
The utility model belongs to technical field of steel rolling, relates in particular to a kind of secondary screw-thread steel roll mill device for modifying.
Background technology
The ultra-fine grain steel that various countries, the world today develop unexpectedly mutually is to pass through crystal grain thinning, be latest generation steel with combination property, have very high use value and vast market prospect, in recent years along with a large amount of constructions of skyscraper, the shock resistance of building is required more and more higher, wherein more and more stricter for the requirement of the intensity of hot-rolled reinforced bar for building and ductility.
The performance of used secondary screw-thread steel is in the building: yield strength 〉=345MPa; Tensile strength 〉=465MPa; The performance of diameter 12mm～25mm elongation after fracture 〉=17%, diameter 28mm～40mm elongation after fracture 〉=17%, three grade screw-thread steel is: yield strength 〉=410MPa; Tensile strength 〉=550MPa; Diameter 12mm～25mm elongation after fracture 〉=16%, diameter 28mm～40mm elongation after fracture 〉=16%, because the intensity of secondary screw-thread steel is on the low side, similar building uses three grades of screw-thread steels to save 10～25% steel than secondary screw-thread steel, therefore in building structure, use three grades of screw-thread steels to replace the secondary screw-thread steel to become a development trend, because steel plant are by the equipment that mostly was rolling secondary screw-thread steel in the past, now purchase the equipment of rolling three grades of screw-thread steels again again, spend a large amount of money and take very big factory building, the condition of some steel plant may not reach requirement, thereby restricted the output of three grades of screw-thread steels, reduced the income of enterprise.
Summary of the invention
The purpose of this utility model, be in order to overcome the deficiencies in the prior art, and provide secondary screw-thread steel roll mill device for modifying, this device changes three grades of screw-thread steel rolling equipments into by secondary screw-thread steel rolling equipment, does not need to have saved the factory building occupation of land from newly purchasing complete iron and steel rolling equipment, simplified operation, saved the fund and the energy, and the obdurability of steel is further enhanced, reaches the requirement of three grades of screw-thread steels.
For solving the problems of the technologies described above, the technical solution of the utility model is: secondary screw-thread steel roll mill device for modifying, comprise No. 18 milling trains, No. 3 flying shears, this device also comprises sedimentation basin, cooling tower, water pump and water cooling equipment, be provided with water cooling equipment between described No. 18 milling trains and No. 3 flying shears, described water cooling equipment, sedimentation basin, cooling tower and water pump are connected by pipeline successively.The finished product bar that comes out from No. 18 milling trains passes through water cooling equipment, to reach a highdensity in short-term surface cool, because the speed that temperature descends is higher than the critical speed of marquench, therefore the superficial layer of reinforcing bar is converted into a kind of martensitic structure, and heart portion still keeps austenitic structure, after this high strength cooling, bar cools off in air, by the conduction heart portion heat area of heating surface, finish the surface martensite tempering, after bar enters cold bed, the austenite of reservation will be converted into the very thin pearlitic structrure of a kind of crystal grain, compare with other cooling systems, this system is because cooldown rate is higher, thereby the tempered martensite top layer is just thinner also harder, therefore, when yield strength and tensile strength were identical in the rod mechanical performance, percentage elongation was higher.
Water cooling equipment described in the utility model is the bushing type water cooling equipment.
The beneficial effects of the utility model are: because this device also comprises sedimentation basin, cooling tower, water pump and water cooling equipment, be provided with water cooling equipment between described No. 18 milling trains and No. 3 flying shears, described water cooling equipment, sedimentation basin, cooling tower and water pump are connected by pipeline successively.This device for modifying is the cooling velocity difference of utilizing after the control rolled piece rolls, and controls the tissue and the performance of steel, can further improve the intensity of steel by the control cooling under the prerequisite that does not reduce rolled piece toughness, and shortening hot-strip cool time.
Description of drawings
Fig. 1 is an apparatus structure block diagram of the present utility model,
Among the figure: 1-18 milling train, 2-sedimentation basin, 3-cooling tower, 4-water pump, 5-water cooling equipment, 6-3 flying shear.
Below in conjunction with accompanying drawing the utility model is described in further detail.
The specific embodiment
According to shown in Figure 1, secondary screw-thread steel roll mill device for modifying, comprise 1, No. 3 flying shears 6 of No. 18 milling trains, this device also comprises sedimentation basin 2, cooling tower 3, water pump 4 and water cooling equipment 5, be provided with water cooling equipment 5 between No. 18 milling trains 1 and No. 3 flying shears 6, described water cooling equipment 5, sedimentation basin 2, cooling tower 3 and water pump 4 are connected by pipeline successively.
Claims (2)
1, secondary screw-thread steel roll mill device for modifying, comprise No. 18 milling trains, No. 3 flying shears, it is characterized in that: this device also comprises sedimentation basin, cooling tower, water pump and water cooling equipment, be provided with water cooling equipment between described No. 18 milling trains and No. 3 flying shears, described water cooling equipment, sedimentation basin, cooling tower and water pump are connected by pipeline successively.
2, secondary screw-thread steel roll mill device for modifying according to claim 1, it is characterized in that: described water cooling equipment is the bushing type water cooling equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201723794U CN201271649Y (en) | 2008-10-06 | 2008-10-06 | Improved apparatus of secondary screw-thread steel rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201723794U CN201271649Y (en) | 2008-10-06 | 2008-10-06 | Improved apparatus of secondary screw-thread steel rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201271649Y true CN201271649Y (en) | 2009-07-15 |
Family
ID=40882002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201723794U Expired - Fee Related CN201271649Y (en) | 2008-10-06 | 2008-10-06 | Improved apparatus of secondary screw-thread steel rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201271649Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551857A (en) * | 2013-10-30 | 2014-02-05 | 无锡市安捷脚手架有限公司 | Aluminum wafer production line device |
| CN104747461A (en) * | 2015-01-07 | 2015-07-01 | 马钢(集团)控股有限公司 | Control system for shape steel intensive pressure water cooling high-pressure variable-frequency water pumps |
-
2008
- 2008-10-06 CN CNU2008201723794U patent/CN201271649Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551857A (en) * | 2013-10-30 | 2014-02-05 | 无锡市安捷脚手架有限公司 | Aluminum wafer production line device |
| CN104747461A (en) * | 2015-01-07 | 2015-07-01 | 马钢(集团)控股有限公司 | Control system for shape steel intensive pressure water cooling high-pressure variable-frequency water pumps |
| CN104747461B (en) * | 2015-01-07 | 2017-01-18 | 马钢(集团)控股有限公司 | Control system for shape steel intensive pressure water cooling high-pressure variable-frequency water pumps |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG XIWANG STEEL CO., LTD. Free format text: FORMER OWNER: XIWANG GROUP CO., LTD. Effective date: 20110617 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 256209 XIWANG INDUSTRIAL PARK, ZOUPING COUNTY, BINZHOU CITY, SHANDONG PROVINCE TO: 256209 HANDIAN TOWN, ZOUPING COUNTY, BINZHOU CITY, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110617 Address after: 256209, Han Zhen, Zouping County, Binzhou, Shandong Patentee after: Shandong Xiwang Steel Co. Ltd. Address before: West Industrial Park 256209 Shandong province Binzhou city Zouping County Patentee before: Xiwang Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090715 Termination date: 20151006 |
|
| EXPY | Termination of patent right or utility model |