CN103600047A - Continuous casting secondary cooling water spraying strip base pipe automatic water distributing device and machining method thereof - Google Patents
Continuous casting secondary cooling water spraying strip base pipe automatic water distributing device and machining method thereof Download PDFInfo
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- CN103600047A CN103600047A CN201310498887.7A CN201310498887A CN103600047A CN 103600047 A CN103600047 A CN 103600047A CN 201310498887 A CN201310498887 A CN 201310498887A CN 103600047 A CN103600047 A CN 103600047A
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Abstract
The invention discloses a continuous casting secondary cooling water spraying strip base pipe automatic water distributing device which comprises a main pipeline, a base pipe and spraying strips. The main pipeline is connected with the middle of the base pipe, the spraying strips are distributed and connected on the base pipe evenly, and a water distributing baffle is arranged in the base pipe and at the connecting position of the main pipeline and the base pipe. The invention further discloses a machining method of the continuous casting secondary cooling water spraying strip base pipe automatic water distributing device. By means of the device, water quantity can be distributed equally, casting blanks can achieve an even cooling effect, inner and surface quality of the casting blanks can be improved, and yield of products is improved.
Description
Technical field
The present invention relates to a kind of cast steel technology, specifically, relate to a kind of continuous casting secondary cooling water spray automatic division box of bar base tube and processing method thereof.
Background technology
As shown in Figure 1, be the structural representation of continuous casting secondary cooling water division box in prior art.Main line 1 is connected to the middle part of base tube 2, and six spray bar 3(labels are 1
#, 2
#, 3
#,, 4
#, 5
#, 6
#) be connected on base tube 2.
This casting machine secondary cooling water division box operation principle is: when having main line 1 water inlet of certain pressure, after base tube 2, flow to left and right sides spray bar 3, by the bar 3 that respectively sprays being connected with base tube 2, with the form of covering of the fan, be ejected into casting billet surface, play the effect of cooling strand.
As shown in Figure 2, be minute water figure that occurs continuous casting secondary cooling water division box in betting contest situation in prior art.But existing division box exists defect, spray bar 3 can produce fouling or impurity due to the problem of hot environment and water quality, and the nozzle that sprays bar 3 is attenuated, and the capacity of outlet water of each nozzle is created a difference.For example,, when 5
#, 6
#during spray bar 3 water spray deleterious, owing to producing water distribution quantity, need the water yield in pipeline not to be full of base tube 2 completely, now due to pressure differential, the water yield is distributed will preferentially bias toward 1
#, 2
#, 3
#spray bar, corresponding strand region cooling effect is than 4
#, 5
#, 6
#the strand region cooling effect of spray bar one side is strong, produces the problem of slab cooling inequality.
As shown in Figure 3, be because the casting billet surface temperature difference causes more greatly the different schematic diagram of strand both side surface quality in prior art.
In continuous casting is produced, the cooling effect quality of secondary cooling water is the key link that affects slab quality quality.If the even meeting of strand width inhomogeneous cooling directly causes the temperature of strand both sides to have deviation, in process through fan-shaped section straightening section when producing, a side in plasticity humidity province is normally aligned, and in figure, a-quadrant represents that strand temperature is in plastic region, and surface is normal; Opposite side there will be strand bight aligning crackle owing to being in brittleness temperature district, and in figure, B region representation temperature, in brittle zone, occurs crackle.
As shown in Figure 4, be the center segregation schematic diagram that strand liquid core end causes shape to change because secondary cooling water inhomogeneous cooling is even causing.In addition, the temperature difference of strand both sides more also can cause strand internal cooling inhomogeneous, and the position of the end in liquid core region and shape produce irregular.At casting machine, gently depress the fan-shaped section end in covering liquid core region (C region) completely, center segregation of casting blank will can not get improving, and internal soundness variation, directly causes strand in the operation of rolling, to occur the problems such as layering and performance inconsistency lattice.
In sum, guarantee that strand secondary cooling water even water distribution is very important technology controlling and process point.At present continuous casting secondary cooling water spray bar base tube division box need a kind of can overcome respectively spray bar capacity of outlet water and have the mean allocation water yield device under difference situation, to reduce both sides water yield deviation, guarantee that strand reaches uniform cooling effect.
Summary of the invention
Technical problem solved by the invention is to provide the automatic division box of a kind of continuous casting secondary cooling water spray bar base tube, the energy mean allocation water yield, guarantee that strand reaches uniform cooling effect, to improve inside and the surface quality of strand, thus the lumber recovery of raising product.
Technical scheme is as follows:
The automatic division box of a kind of continuous casting secondary cooling water spray bar base tube, comprise main line, base tube and spray bar, described main line is connected to the middle part of described base tube, described spray bar is uniformly distributed and is connected on described base tube, described base tube inside is provided with a minute water catch, and described minute water catch is positioned at the junction of described main line and base tube.
Further: within described minute, water catch is circular.
Further: within described minute, water catch withstands on described main line.
Further: the diameter of described minute water catch is than the large 5mm of the caliber of described base tube.
Technical problem solved by the invention is to provide the processing method of the automatic division box of a kind of continuous casting secondary cooling water spray bar base tube, the energy mean allocation water yield, guarantee that strand reaches uniform cooling effect, to improve inside and the surface quality of strand, thus the lumber recovery of raising product.
Technical scheme is as follows:
A processing method for the automatic division box of continuous casting secondary cooling water spray bar base tube, comprising:
At base tube place casing knife opening corresponding to the axis of main line, use a minute water catch larger than the caliber of described base tube to insert from described opening part, withstand on described main line;
With described minute water catch and described base tube are welded; Described main line is connected to the middle part of described base tube, and spray bar is uniformly distributed and is connected on described base tube, and described minute water catch is positioned at the junction of described main line and base tube.
Further: within described minute, water catch is circular.
Further: the diameter of described minute water catch is than the large 5mm of the caliber of described base tube.
Further: with cutting gun, remove and exceed the unnecessary part in described base tube surface, and polishing to be level and smooth.
Further: when the water inlet of described main line flows into before described base tube, through the uniform distribution of described minute water catch, is first two-way, and equivalent to flow to the described base tube of the left and right sides.
Compared with prior art, the technology of the present invention effect comprises:
1, the present invention can overcome casting machine secondary cooling water and respectively sprays bar under the differentiated situation of capacity of outlet water, equally can the mean allocation water yield, guarantee that strand reaches uniform cooling effect, and to improve inside and the surface quality of strand, thereby improve the lumber recovery of product.
2, the present invention has reduced the susceptibility of spray bar capacity of outlet water difference to slab cooling effect, greatly reduces the artificial frequent frequency of changing spray bar, has reduced labour intensity.
3, the invention process cost is lower, but the action effect playing is obvious, can effectively improve the secondary cooling water water distribution control accuracy of casting machine, thereby improves the lumber recovery of product, reaches considerable economic benefit.
4, casting machine fan-shaped section secondary cooling water base tube is generally at the symmetrical six road spray bars of installing of arch section fan-shaped section, the symmetrical four road spray bars of installing of horizontal position, and the key position of this secondary cooling water water dispensing apparatus is in the middle of base tube, all applicable for casting machine each fan-shaped section from top to bottom.
5, the present invention can be converted by traditional secondary cool water shower bar base tube division box, reaches the object of uniform water distribution, again can cost-saving operation, avoid changing due to a large amount of the financial cost that new equipment spare parts produce.
6, Heavy Plate Rolling Line is being used traditional casting machine fan-shaped section secondary cooling water spray bar base tube division box period, often occur having difference to cause the problem of strand chink because spray bar goes out aqueous condition, the unplanned amount causing thus reaches monthly 600 tons of left and right, and the strand having influence on rolls into yield of steel plate average out to 88%.Come into operation after the present invention, greatly reduce the artificial frequent frequency of changing spray bar, reduced labour intensity, improved casting machine secondary cooling water control precision, strand crackle is now eliminated substantially, strand rolls into yield of steel plate and has risen to 91%, and under steel industry background overall at a low tide, the lifting of lumber recovery has directly produced considerable economic benefit.
7, Heavy Plate Rolling Line is being used traditional casting machine fan-shaped section secondary cooling water spray bar base tube division box period, and the low power testing result of weighing Inner Quality of Billet is that C system (the internal soundness rank of C system is high compared with B system, A) proportion is 60%; Come into operation after the present invention, the low power testing result of Inner Quality of Billet is that C is that ratio has reached 88%, has reached internal class level.
Accompanying drawing explanation
Fig. 1 is the structural representation of continuous casting secondary cooling water division box in prior art;
Fig. 2 is minute water figure that occurs continuous casting secondary cooling water division box in betting contest situation in prior art;
Fig. 3 is because the casting billet surface temperature difference causes more greatly the different schematic diagram of strand both side surface quality in prior art;
Fig. 4 is the center segregation schematic diagram that in prior art, strand liquid core end causes shape to change because secondary cooling water inhomogeneous cooling is even causing;
Fig. 5 is the structural representation of continuous casting secondary cooling water division box in the present invention;
Fig. 6 is that in the present invention, casting machine is gently depressed the schematic diagram that fan-shaped section covers strand liquid core end completely and eliminated center segregation.
The specific embodiment
Below with reference to accompanying drawing and preferred embodiment, technical solution of the present invention is elaborated.
As shown in Figure 5, be the structural representation of continuous casting secondary cooling water division box in the present invention.The structure of continuous casting secondary cooling water spray bar base tube division box comprises: main line 1, base tube 2, spray bar 3 and minute water catch 51; Main line 1 is connected to the middle part of base tube 2, and spray bar 3 is uniformly distributed and is connected on base tube 2; Divide water catch 51 to be arranged on base tube 2 inside, and be positioned at the junction of main line 1 and base tube 2.
In this preferred embodiment, A place at base tube 2 corresponding to the axis of main line 1, uses casing knife opening, uses than the circle of the base tube large 5mm of 2 caliber left and right (for reserving welding portion) and divides water catch 51 to insert from opening part, and till withstanding main line 1, with electric welding, will divide water catch 51 and base tube 2 to weld.With cutting gun, remove and exceed the base tube 2 unnecessary parts in surface, and polishing is level and smooth.
Before the water inlet inflow base tube 2 of main line 1, through minute water catch 51 uniform distributions, is first two-way, and equivalent flow to the base tube 2 of the left and right sides.
As shown in Figure 6, be that in the present invention, casting machine is gently depressed the schematic diagram that fan-shaped section covers strand liquid core end completely and eliminated center segregation.At casting machine, gently depress after fan-shaped section, gently depress region and eliminate center segregation, covering liquid core region end (D region in figure) completely, center segregation of casting blank improves.
Claims (9)
1. a continuous casting secondary cooling water sprays the automatic division box of bar base tube, comprise main line, base tube and spray bar, described main line is connected to the middle part of described base tube, described spray bar is uniformly distributed and is connected on described base tube, it is characterized in that: described base tube inside is provided with a minute water catch, and described minute water catch is positioned at the junction of described main line and base tube.
2. continuous casting secondary cooling water sprays the automatic division box of bar base tube as claimed in claim 1, it is characterized in that: within described minute, water catch is for circular.
3. continuous casting secondary cooling water sprays the automatic division box of bar base tube as claimed in claim 2, it is characterized in that: within described minute, water catch withstands on described main line.
4. continuous casting secondary cooling water sprays the automatic division box of bar base tube as claimed in claim 3, it is characterized in that: the diameter of described minute water catch is than the large 5mm of the caliber of described base tube.
5. continuous casting secondary cooling water sprays a processing method for the automatic division box of bar base tube, comprising:
At base tube place casing knife opening corresponding to the axis of main line, use a minute water catch larger than the caliber of described base tube to insert from described opening part, withstand on described main line;
With described minute water catch and described base tube are welded; Described main line is connected to the middle part of described base tube, and spray bar is uniformly distributed and is connected on described base tube, and described minute water catch is positioned at the junction of described main line and base tube.
6. the processing method of the automatic division box of continuous casting secondary cooling water spray bar base tube as claimed in claim 5, is characterized in that: within described minute, water catch is for circular.
7. the processing method of the automatic division box of continuous casting secondary cooling water spray bar base tube as claimed in claim 6, is characterized in that: the diameter of described minute water catch is than the large 5mm of the caliber of described base tube.
8. the processing method of the automatic division box of continuous casting secondary cooling water spray bar base tube as claimed in claim 6, is characterized in that: with cutting gun, remove and exceed the unnecessary part in described base tube surface, and polishing is level and smooth.
9. the processing method of the automatic division box of continuous casting secondary cooling water spray bar base tube as claimed in claim 6, it is characterized in that: when the water inlet of described main line flows into before described base tube, through the uniform distribution of described minute water catch, be first two-way, and equivalent flow to the described base tube of the left and right sides.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310498887.7A CN103600047B (en) | 2013-10-22 | 2013-10-22 | The even working method of the casting cooling twice Water spray bar automatic division box of base pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310498887.7A CN103600047B (en) | 2013-10-22 | 2013-10-22 | The even working method of the casting cooling twice Water spray bar automatic division box of base pipe |
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| CN103600047A true CN103600047A (en) | 2014-02-26 |
| CN103600047B CN103600047B (en) | 2016-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108472718A (en) * | 2016-01-29 | 2018-08-31 | 新日铁住金株式会社 | The secondary cooling method and secondary cooling apparatus of continuously casting strand |
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|---|---|---|---|---|
| US3468362A (en) * | 1966-05-31 | 1969-09-23 | Concast Ag | Method of cooling cast members from a continuous casting operation |
| JPS5781947A (en) * | 1980-11-07 | 1982-05-22 | Kawasaki Heavy Ind Ltd | Method and device for cooling of continuous casting material |
| CN201217065Y (en) * | 2008-06-23 | 2009-04-08 | 宝山钢铁股份有限公司 | Double-tube spraying tube of continuous casting machine |
| CN202599212U (en) * | 2012-04-11 | 2012-12-12 | 无锡三九制冷设备有限公司 | Cooler wrapped pipe water inlet water division separation blade |
| CN103278040A (en) * | 2013-06-15 | 2013-09-04 | 昆山市润苏物资有限公司 | Modified water-separating damper for water inlet of covered pipe of cooler |
| CN103353253A (en) * | 2013-06-25 | 2013-10-16 | 上海易源节能科技有限公司 | Cooling tower group and water distribution device thereof |
| CN203541473U (en) * | 2013-10-22 | 2014-04-16 | 内蒙古包钢钢联股份有限公司 | Continuous casting secondary cooling water spray strip base tube automatic water distribution device |
-
2013
- 2013-10-22 CN CN201310498887.7A patent/CN103600047B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3468362A (en) * | 1966-05-31 | 1969-09-23 | Concast Ag | Method of cooling cast members from a continuous casting operation |
| JPS5781947A (en) * | 1980-11-07 | 1982-05-22 | Kawasaki Heavy Ind Ltd | Method and device for cooling of continuous casting material |
| CN201217065Y (en) * | 2008-06-23 | 2009-04-08 | 宝山钢铁股份有限公司 | Double-tube spraying tube of continuous casting machine |
| CN202599212U (en) * | 2012-04-11 | 2012-12-12 | 无锡三九制冷设备有限公司 | Cooler wrapped pipe water inlet water division separation blade |
| CN103278040A (en) * | 2013-06-15 | 2013-09-04 | 昆山市润苏物资有限公司 | Modified water-separating damper for water inlet of covered pipe of cooler |
| CN103353253A (en) * | 2013-06-25 | 2013-10-16 | 上海易源节能科技有限公司 | Cooling tower group and water distribution device thereof |
| CN203541473U (en) * | 2013-10-22 | 2014-04-16 | 内蒙古包钢钢联股份有限公司 | Continuous casting secondary cooling water spray strip base tube automatic water distribution device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108472718A (en) * | 2016-01-29 | 2018-08-31 | 新日铁住金株式会社 | The secondary cooling method and secondary cooling apparatus of continuously casting strand |
| US10974316B2 (en) | 2016-01-29 | 2021-04-13 | Nippon Steel Corporation | Secondary cooling method and secondary cooling device for casting product in continuous casting |
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|---|---|
| CN103600047B (en) | 2016-06-01 |
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