CN201250279Y - Galvanized steel strip cooling device - Google Patents
Galvanized steel strip cooling device Download PDFInfo
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- CN201250279Y CN201250279Y CNU2008201517388U CN200820151738U CN201250279Y CN 201250279 Y CN201250279 Y CN 201250279Y CN U2008201517388 U CNU2008201517388 U CN U2008201517388U CN 200820151738 U CN200820151738 U CN 200820151738U CN 201250279 Y CN201250279 Y CN 201250279Y
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Abstract
The utility model discloses a galvanized steel strip cooling device, which comprises a post-galvanized quick cooling device arranged on the two sides rightly corresponding to the upper surface and the lower surface of a steel strip, and further comprises a primary cooling device arranged on the lower portion of the post-galvanized quick cooling device, wherein the primary cooling device comprises a plurality of pairs of jet tubes which are used for covering the middle portion of the steel strip and are respectively arranged on the two sides rightly corresponding to the upper surface and the lower surface of the steel strip. The galvanized steel strip cooling device disclosed by the utility model increases the cooling effect of the steel strip, and can regulate the cooling capability along the width direction of the steel strip. And the primary cooling device is only used to cool the middle portion of the steel strip along the width direction of the steel strip, and reduces of the temperature difference distributed along the width direction of the steel strip within 5 DEG C from 20 DEG C in a traditional process, and has the advantages of low investment, production and maintenance cost. In addition, the galvanized steel strip cooling device not only can save water consumption of a machine set owing to adopting the jet cooling method to cool the steel strip without using cooling water, but also has no safety hidden dangers.
Description
Technical field
The utility model relates to the hot pure zinc plating technical field of cold rolled strip, relates in particular to after a kind of plating of hot pure zinc plating unit device for cooling just.
Background technology
Along with the raising that products such as auto sheet, tame electroplax require corrosion resisting property, increasing steel plate adopts the zinc-plated corrosion resisting property that improves steel plate.Common galvanized method has two kinds of pot galvanize and electro-galvanizings, but electro-galvanizing is because its cost is higher, pollute relatively large, development in recent years is slow, and the pot galvanize product is along with the progressively raising of its surface quality and the progress of coating welding technique, be applied to industries such as automobile, household electrical appliances more and more, the pure zinc product of hot dip particularly, development was swift and violent in recent years, increasing American-European car is that the electro-galvanizing auto sheet has been used hot pure zinc plating auto sheet instead, thereby domestic in recent years newly-built many hot pure zinc plating units.
Common hot pure zinc plating process as shown in Figure 1, the band steel 10 of annealed processing is immersed in stove nose 11 the zinc liquid 13 in the zinc pot 12 and carries out pot galvanize, band steel 10 makes progress after sinking roller 14 turns to, after air knife 15 blowing gas control thickness of coating, entering the plating back cools off for fast cold section 16, after 2 top rollers 17 turn to, enter slow cooling section 18 and continue cooling, immerse at last in the water-cooling groove 19 and finally cool off.Wherein, the cooling of the fast cold section 16 pairs of coating in plating back is very crucial: if cooling power is too low, and temperature height when coating arrives top roller 17, coating is soft, is easy to be scratched, and sticks to top roller 17 lip-deep coating and be easy to produce the roll marks defective on the band steel; If even (cooling of limit portion band steel is fast usually along strip width direction inhomogeneous cooling, the cooling of middle band steel is slow, the temperature of middle band steel exceeds more than 20 ℃ than the temperature of limit portion band steel), be easy to occur band steel phase transformation strengthening high-strength steel such as (particularly) dual phase steels broad ways performance inequality, influence the punching performance of the finished product.At present, the method for cooling that hot pure zinc plating unit is commonly used has fixed blower fan air blast cooling, and fixed jet bellows cool off gentle fog cooling.Adopting fixed blower fan air blast cooling and fixed jet bellows refrigerative advantage is that equipment investment cost and production and operation cost are low, but they are relatively low to the cooling power of band steel, and cooling apparatus commonly used can't regulate along strip width direction cooling power, is easy to cause the finished product performance along strip width direction inequality.The cooling of employing aerosol, though to band steel cooling power height, but the equipment investment cost and the production and operation and maintenance cost are all high, simultaneously, exist the aerosol water of condensation to splash into the danger that the zinc pot sets off an explosion, potential safety hazard is big, in addition, aerosol cooling apparatus commonly used also can't be regulated along the cooling power of strip width direction, to the band steel phase transformation strengthening high-strength steel such as (particularly) dual phase steels obtain very unfavorable along the uniform product performance of strip width direction.
In sum, existing hot pure zinc plating unit plating back can't be regulated along the cooling power of strip width direction band steel for fast cold section, phase transformation strengthening high-strength steel such as dual phase steel are easy to occur along strip width directional performance inequality, influence the punching performance of the finished product, and the investment of aerosol cooling apparatus, production and maintenance cost height, potential safety hazard is big.
Summary of the invention
The purpose of this utility model provides a kind of galvanized steel refrigerating unit, has improved the cooling performance of band steel, and its first device for cooling only cools off along the band steel of strip width direction middle part; And can regulate cooling power according to the distribution situation of band steel broad ways temperature along the strip width direction, obtain along the pure zinc product of the uniform hot dip of strip width direction product performance.This device not only can reduce facility investment, and the production and operation and maintenance cost are lower, but also can avoid splashing into the potential safety hazard that the zinc pot causes blast because of water coolant.
The technical solution of the utility model is as follows: the below of fast cold jet cooling section (being divided into plurality of sections usually) increases just cold section after plating, should be just cold section adopt circular jet nozzle vertically to band steel upper and lower surface winding-up cooling gas, and the single even layout of these jet nozzles be welded on the jet jet pipe.Above-mentioned jet jet pipe arranges along the traffic direction of band steel, and the flow of the cooling gas of each jet jet pipe (flow is to be equivalent to close in 0 o'clock, and flow is to be equivalent to open fully in 100% o'clock) can both be regulated separately.Above-mentioned jet jet pipe is arranged side by side in unit medullary ray zygomorphy, the total width of arranging is less than the mean value of the daily production strip width of unit specification, these jet pipes only are used to cool off the band steel along strip width direction middle part in the production, and, regulate cooling power along the strip width direction according to the distribution situation of band steel broad ways temperature.For accommodation zone steel better along the cooling power of strip width direction, this just cold section make portable structure, can move up and down along band steel traffic direction.The round nozzle of the even layout of the unified control of fast cold jet cooling section employing flow is vertically to being with steel upper and lower surface shower cooling gas equably after the plating.Like this, by cold section adjusting (realizing) and the adjusting of cold section height just just by the flow of regulating each jet pipe cooling gas along strip width direction cooling power, cooperate the fast cold jet cooling section in plating back, can be along strip width direction cooling zone steel equably, thus obtain along the pure zinc product of the uniform hot dip of strip width directional performance.
The purpose of this utility model is achieved in that a kind of galvanized steel refrigerating unit, comprises a plating back fast cooling device, is arranged at over against the both sides of band steel upper and lower surface, also comprises a first device for cooling, is installed in fast cooling device below, plating back; Just device for cooling comprises some jet pipes to cover tape steel middle part, is installed in respectively over against the both sides of band steel upper and lower surface.
Preferably, described device for cooling just can move up and down along band steel traffic direction.
Preferably, also comprise some round nozzles, evenly be installed in each on the jet pipe; Described jet pipe over against band steel upper and lower surface both sides respectively is right more than or equal to 5 odd number, is arranged side by side along band steel traffic direction; Every pair of jet pipe is communicated with a steel pipe by a flexible pipe, and steel pipe is provided with a flow control valve.
Preferably, also comprise a fixed frame, which is provided with a pair of fixed pulley and two pairs of tracks, described device for cooling just moves in orbit; A pair of free rotary pulley is fixedlyed connected with first device for cooling; A pair of capstan winch; A pair of wireline, an end of every wireline is fixed on the framework, walks around free rotary pulley and fixed pulley successively, at last on capstan winch; A pair of motor drives a pair of capstan winch simultaneously.
Preferably, also comprise four pairs of limit switches, install in orbit.
Preferably, described device for cooling just is provided with some rollers, and rolling with track is connected.
Preferably, described round nozzle is fixed by the mode and the jet pipe of welding.
The utility model makes it compared with prior art owing to adopted above technical scheme, has the following advantages and positively effect: improved the cooling performance of band steel, can regulate along the cooling power of strip width direction; And just device for cooling only cools off along the band steel of strip width direction middle part, makes the temperature difference that distributes along the strip width direction by the narrowing down in 5 ℃ more than 20 ℃ of original traditional method, but also has the low advantage of investment, production and maintenance cost.In addition,, needn't use water coolant, not only can save the water consumption of unit, and not have potential safety hazard owing to adopt jet refrigerative method cooling zone steel.
Description of drawings
Fig. 1 is zinc-plated section main device synoptic diagram of hot pure zinc plating unit of prior art;
Fig. 2 is the refrigerating unit synoptic diagram of device for cooling just that installs additional of the present utility model;
Fig. 3 is used to cool off pars intermedia bit strip steel synoptic diagram for the first device for cooling of band steel of the present utility model;
Fig. 4 be nozzle of the present utility model and and the band steel between the relative position synoptic diagram;
Fig. 5 is a jet pipe of the present utility model and structure of nozzle simplified schematic diagram;
Fig. 6 is jet pipe of the present utility model and variable valve connection diagram;
Fig. 7 is that variable valve of the present utility model is to each flow control synoptic diagram to jet pipe;
Fig. 8 is a running gear synoptic diagram of the present utility model;
Fig. 9 is the structural representation that rotates freely pulley of the present utility model.
Embodiment
As shown in Figure 2, wherein 21 be with steel; 22 stove noses; 23 zinc pots; 24 sinking rollers; 25 air knives; 26 first device for cooling; Fast cold section of 27 plating backs; 28 along strip width scanning direction formula temperature measurer; 29 top rollers; 30 slow cooling sections; 31 water-cooling grooves.The first device for cooling 26 of present embodiment is installed between plating back fast cold section 27 and the air knife 25.
As Fig. 3, shown in 4,5,41 nozzles wherein; 42 jet pipes.First device for cooling 26 comprises some to jet pipe 42, is installed in respectively over against the both sides of band steel 21 upper and lower surfaces, only is used to cool off the band steel 21 along strip width direction middle part.Fast cold section 27 mode that adopts the unified control of flow in other plating back, to band steel upper and lower surface equably shower cooling gas cool off the band steel of whole width.Just on the jet jet pipe 42 of device for cooling 26 some round nozzles 41 are installed, in the present embodiment, jet jet pipe 42 arranges along band steel traffic directions, and nozzle 41 is single to be welded on blowing gas cooling zone steel on the jet jet pipe 42 equably.
As Fig. 6, shown in 7,51 gaseous blast adjustable valves wherein; 52 steel pipes; 53 flexible pipes.In the present embodiment, the jet pipe 42 over against band steel 21 upper and lower surface both sides respectively is 5 pairs, edge band steel 21 traffic direction settings.Every pair of jet pipe 42 all adopts same supply air line, and promptly every pair of jet pipe 42 is communicated with the steel pipe at a flow control valve 51 places by a flexible pipe 53, by the flow (can regulate between 0～100%) of independent gaseous blast adjustable valve 51 control blowing gas.In sum, by each to (providing 5 pairs in this enforcement, can be during concrete enforcement according to the strip width specification of hot pure zinc plating unit production, select some to jet pipe, be able to cool off fast the purpose of middle portion band steel) the gaseous blast adjustable valve of jet pipe 51 control jet flows (can between 0～100%, regulate), make this refrigerating unit can regulate along the cooling power of strip width direction.
As shown in Figure 8,61 motor-driven capstan winches wherein; 62 wireline; 63 have the rail of slideway; 64 steelframes (be used for fixing and support just device for cooling 26); 65 free rotary pulleys; 66 rollers; 67 limit position actuation button (limit switch).Just device for cooling 26 also comprises a running gear, and it can be moved up and down along band steel traffic direction.
This running gear comprises a pair of free rotary pulley 65, fixedlys connected with first device for cooling 26, and the concrete structure of free rotary pulley 65 can be referring to Fig. 9, wherein 71 bearings; 72 wheel disc notches.
Also comprise a pair of motor-driven capstan winch 61, drive that the wireline 62 that is twined on each capstan winch is walked around from the bottom of free rotary pulley 65, and the end of this wireline 62 is connected with a steelframe 64 by a pair of motor (not shown); Driving a pair of motor-driven capstan winch 61 haulage cables 62 simultaneously by a pair of motor can move up and down along first device for cooling 26 tractions that rail 63 moves up and down.
Also comprise two pairs of rail 63, be fixed on and be used for fixing and support on the steelframe 64 of first device for cooling 26; Some rollers 66 are located at device for cooling 26 left and right sides just, and it is embedded in the slideway of rail 63; Four pairs of limit switches; i.e. four pairs of limit position actuation button 67; limit position according to first device for cooling 26 movings range is located at up and down on every one steel rail 63; when device for cooling 26 touches limit position actuation button 67 originally; two pairs of motors that drive capstan winch 61 promptly stop, and play the protection effect of device for cooling 26 just.In the production,, regulate first device for cooling 26 and respectively organize the flow of jet pipe 42 and the height of first device for cooling 26, obtain being with steel uniformly along strip width direction temperature according to measuring result along strip width scanning direction formula thermo detector 28.
It should be noted that above enumerate only for a specific embodiment of the present utility model, obviously the utility model is not limited to above embodiment, and many similar variations are arranged thereupon.If those skilled in the art all should belong to protection domain of the present utility model from all distortion that the disclosed content of the utility model directly derives or associates.
Claims (7)
1. a galvanized steel refrigerating unit comprises a plating back fast cooling device, is arranged at over against the both sides of band steel upper and lower surface, it is characterized in that: also comprise a first device for cooling, be installed in fast cooling device below, plating back; Just device for cooling comprises some jet pipes to cover tape steel middle part, is installed in respectively over against the both sides of band steel upper and lower surface.
2. galvanized steel refrigerating unit as claimed in claim 1 is characterized in that: described device for cooling just can move up and down along band steel traffic direction.
3. galvanized steel refrigerating unit as claimed in claim 2 is characterized in that: also comprise some round nozzles, evenly be installed in each on the jet pipe; Described jet pipe over against band steel upper and lower surface both sides respectively is right more than or equal to 5 odd number, is arranged side by side along band steel traffic direction; Every pair of jet pipe is communicated with a steel pipe by a flexible pipe, and steel pipe is provided with a flow control valve.
4. galvanized steel refrigerating unit as claimed in claim 3 is characterized in that also comprising:
One fixed frame which is provided with a pair of fixed pulley and two pairs of tracks, and described device for cooling just moves in orbit;
A pair of free rotary pulley is fixedlyed connected with first device for cooling;
A pair of capstan winch;
A pair of wireline, an end of every wireline is fixed on the framework, walks around free rotary pulley and fixed pulley successively, at last on capstan winch;
A pair of motor drives a pair of capstan winch simultaneously.
5. galvanized steel refrigerating unit as claimed in claim 4 is characterized in that: also comprise four pairs of limit switches, install in orbit.
6. galvanized steel refrigerating unit as claimed in claim 5 is characterized in that: described device for cooling just is provided with some rollers, and rolling with track is connected.
7. galvanized steel refrigerating unit as claimed in claim 6 is characterized in that: described round nozzle is fixed by the mode and the jet pipe of welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201517388U CN201250279Y (en) | 2008-08-08 | 2008-08-08 | Galvanized steel strip cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201517388U CN201250279Y (en) | 2008-08-08 | 2008-08-08 | Galvanized steel strip cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201250279Y true CN201250279Y (en) | 2009-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201517388U Expired - Lifetime CN201250279Y (en) | 2008-08-08 | 2008-08-08 | Galvanized steel strip cooling device |
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| CN (1) | CN201250279Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277547A (en) * | 2011-08-19 | 2011-12-14 | 甘肃荣信电材科技有限公司 | Waterfall type cooling device of hot galvanized zinc steel wire |
| CN102618812A (en) * | 2011-01-28 | 2012-08-01 | 宝山钢铁股份有限公司 | Multistage combined cooling method of post-plating ascending cooling sections of hot-dip galvanizing unit |
| CN102676967A (en) * | 2012-04-09 | 2012-09-19 | 安徽赛远薄钢科技有限公司 | Cooling device in hot dip galvanizing system |
| CN105886988A (en) * | 2016-05-18 | 2016-08-24 | 禹州市神运机械有限公司 | Galvanizing system |
-
2008
- 2008-08-08 CN CNU2008201517388U patent/CN201250279Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618812A (en) * | 2011-01-28 | 2012-08-01 | 宝山钢铁股份有限公司 | Multistage combined cooling method of post-plating ascending cooling sections of hot-dip galvanizing unit |
| CN102618812B (en) * | 2011-01-28 | 2013-12-25 | 宝山钢铁股份有限公司 | Multistage combined cooling method of post-plating ascending cooling sections of hot-dip galvanizing unit |
| CN102277547A (en) * | 2011-08-19 | 2011-12-14 | 甘肃荣信电材科技有限公司 | Waterfall type cooling device of hot galvanized zinc steel wire |
| CN102277547B (en) * | 2011-08-19 | 2014-05-14 | 甘肃荣信电材科技有限公司 | Waterfall type cooling device of hot galvanized zinc steel wire |
| CN102676967A (en) * | 2012-04-09 | 2012-09-19 | 安徽赛远薄钢科技有限公司 | Cooling device in hot dip galvanizing system |
| CN105886988A (en) * | 2016-05-18 | 2016-08-24 | 禹州市神运机械有限公司 | Galvanizing system |
| CN105886988B (en) * | 2016-05-18 | 2017-12-22 | 禹州市神运机械有限公司 | A kind of galvanizing system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090603 |
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| CX01 | Expiry of patent term |