CN208945125U - A kind of crystallizer copper pipe uniformly cooled down - Google Patents
A kind of crystallizer copper pipe uniformly cooled down Download PDFInfo
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- CN208945125U CN208945125U CN201820788485.9U CN201820788485U CN208945125U CN 208945125 U CN208945125 U CN 208945125U CN 201820788485 U CN201820788485 U CN 201820788485U CN 208945125 U CN208945125 U CN 208945125U
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- copper pipe
- crystallizer copper
- heat insulating
- insulating coating
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Abstract
The utility model designs a kind of crystallizer copper pipe uniformly cooled down, including rectangular, rectangle or polygonal crystallizer copper pipe: the corner outer surface of crystallizer copper pipe, which is sized in range, is bonded with one layer of 5920-SN type sealant as high temperature resistant heat insulating coating, and copper pipe corner bonds and carries out preparatory frosting treatment by sandblasting or laser at high temperature resistant heat insulating coating.Set heat insulating coating with a thickness of 0.04~0.2mm, it is not more than the arc length of place corner outer surface transition arc with crystallizer copper corner of tube bonding heat insulating coating width, and it is not less than 1/4 transition arc arc length, the thermal coefficient of heat insulating coating is between 0.02~0.1w/k.m.The crystallizer copper pipe solves the problems, such as that the inhomogeneous cooling of copper pipe is even, improves slab corner surfusion, especially can ensure that heat insulating coating is firmly adhered to copper pipe corner, does not influence permanence operation, it is easy to accomplish, high reliablity is beneficial to promote the use of.
Description
Technical field
The utility model relates to a kind of uniformly cooling crystallizer copper pipes, and in particular to when a kind of work can efficient uniform it is cold
But crystallizer copper pipe belongs to Ferrous Metallurgy machinery industry continuous casting technology field.
Background technique
Crystallizer is first cooling equipment of entire conticaster, and cooling performance directly affects the quality of slab, is
The emphasis management and control devices of conticaster, in existing continuous casting line, the solidification of slab in rectangular, rectangle or polygonal cross-section crystallizer
In the process, after liquid metal pours into crystallizer copper pipe, along crystallizer inner wall crystallization and freezing under the action of cooling water outside copper pipe,
It forms green shell and simultaneously occurs solidification shrinkage, cooling of the metal by two adjacent surfaces copper pipe positioned at crystallizer internal corner region, often
It is bigger than edge intensity of cooling, lead to corner metal and edge metal temperature, shell thickness and shrink unevenly, increases slab angle
The tendency split limits the drawing speed of casting machine.
To solve the above problems, in the prior art, it has been disclosed that solution such as Chinese utility model patent " a kind of uniformly
Cooler crystallizer copper pipe " (201520116800.X) is to be located at by the way that a sandwich method is arranged in crystallizer corner with slowing down
The slab cooling effect in corner, to keep green shell uniform in transversal upper cooling, although this method principle is simple, in practical life
The setting of the corner interlayer is difficult to realize in production, it is also difficult to guarantee the raising of its service life；Chinese invention patent " corner cladding
Technical solution disclosed in the crystallizer copper pipe of slow cooling item " (200920104178) is: having in crystallizer copper pipe external angle cladding
The slow cooling item of big thermal resistance material property, is inlayed into the blind hole of crystallizer copper pipe with the convex column in slow cooling item, slow cooling item is consolidated
Due to crystallizer copper corner of tube, reaching reduces corner cooling velocity effect, improves the cooling uniformity of crystallizer copper pipe slab, should
Scheme directly solves the problems, such as that the inhomogeneous cooling of copper pipe is even, but there are faults of construction for the technical solution, the reason is that inside copper pipe
High temperature, under the conditions of external high-velocity flow, slow cooling item is difficult by the convex column of blind hole on several insertion copper pipes and firm positioning
In the corner of crystallizer copper pipe.
In conclusion existing various published technical solutions are although it is contemplated that by reducing crystallizer corner intensity of cooling
Method, to improve the supercooling problem in slab corner, but these schemes are substantially a kind of ideal frame mode, it is difficult to real
Apply, existing main problem is: reliability is low, service life is short, can not achieve firm support, therefore has no to be widely popularized and make
With.
Summary of the invention
The utility model aim is the deficiency for background technique, provides a kind of crystallizer copper pipe uniformly cooled down, is one
Kind is suitable for the uniform cooler crystallizer copper pipe of continuously casting metal bloom, rectangular bloom or polygonal slab, is in crystallizer copper
Corner surface outside pipe bonds one layer of heat insulating coating resistant to high temperature, to meet copper pipe inner wall thermally equivalent in work, and then improves
Crystallizer copper pipe service life improves pulling rate under the premise of ensuring casting billet quality as far as possible.
The technical solution of the utility model is:
A kind of crystallizer copper pipe uniformly cooled down, including rectangular, rectangle or polygonal crystallizer copper pipe: it is characterized by:
The corner outer surface of the crystallizer copper pipe is sized the high temperature resistant heat insulating coating that one layer of setting thickness is bonded in range, and
At the crystallizer copper corner of tube bonding high temperature resistant heat insulating coating, pre-selection has carried out frosting treatment.
A kind of crystallizer copper pipe uniformly cooled down as described above, it is characterised in that: it is viscous to set the crystallizer copper corner of tube
The heat insulating coating of conjunction is refractory seals glue, the model 5920-SN of the refractory seals glue.
A kind of crystallizer copper pipe uniformly cooled down as described above, it is characterised in that: it is viscous to set the crystallizer copper corner of tube
The thickness for closing heat insulating coating is greater than 0.04mm and is less than 0.2mm.
A kind of crystallizer copper pipe uniformly cooled down as described above, it is characterised in that: setting and the crystallizer copper corner of tube
The arc length that heat insulating coating width is not more than place corner outer surface transition arc is bonded, and is not less than 1/4 transition arc arc length.
A kind of crystallizer copper pipe uniformly cooled down as described above, it is characterised in that: setting and the crystallizer copper corner of tube
The thermal coefficient of heat insulating coating is bonded between 0.02~0.1w/k.m.
A kind of crystallizer copper pipe uniformly cooled down as described above, it is characterised in that: choose and the crystallizer copper corner of tube
The born maximum operating temperature of the heat insulating coating of bonding is kept for the fundamental strength time be greater than 500h at 260 ~ 300 DEG C.
A kind of crystallizer copper pipe uniformly cooled down as described above, it is characterised in that: the described and crystallizer copper corner of tube
Fundamental strength of the heat insulating coating of bonding in setting operating temperature section is greater than 1.5MPa.
Crystallizer copper corner of tube outer surface is sized the high temperature resistant insulation that one layer of setting thickness is bonded in range
The method of coating are as follows: frosting treatment is carried out to the crystallizer copper corner of tube first, then again in one floor of texturing area surface bonding
High temperature resistant heat insulating coating, the frosting treatment method include: sandblast texturing either laser ablation texturing.
The beneficial effects of the utility model are: according to the crystallizer copper pipe of the utility model, using corner surface bonding one
Layer heat insulating coating mode resistant to high temperature, directly solves the problems, such as that the inhomogeneous cooling of copper pipe is even, and the supercooling for improving slab corner is existing
As.It especially can ensure that heat insulating coating is firmly adhered to copper pipe corner, to not influence using effect, it is easy to accomplish, reliably
Property it is high, be conducive to promote the use of.
Detailed description of the invention
Fig. 1 is a kind of the utility model " crystallizer copper pipe uniformly cooled down " embodiment schematic diagram；
The A-A of Fig. 2 Fig. 1 is to diagrammatic cross-section；
Fig. 3 is in a kind of the utility model " crystallizer copper pipe uniformly cooled down " embodiment, to carry out temperature field test
And choose the crystallizer copper pipe partial schematic diagram of a certain model.
Description of symbols in attached drawing: 1-crystallizer copper pipe, 2-corner heat resistant coatings, a-heat insulating coating wrap angle.
Specific embodiment
The utility model embodiment is described further below in conjunction with attached drawing, the examples of the embodiments are shown in the accompanying drawings
Out, in which the same or similar labels are throughly indicated same or similar element or members with the same or similar functions
Part.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to for explaining the utility model, and should not be understood as
Limitations of the present invention, any modification made within the spirit and principle of the utility model, equivalent replacement or change
Into etc., it should be included within the scope of the claims of the utility model, do not addressed in detail in the technical program, be known
Technology.
As shown in Fig. 1~2, a kind of crystallizer copper pipe uniformly cooled down of the utility model, embodiment is with square mold
For copper pipe, 1 one layer of heat insulating coating resistant to high temperature of outside four corners surface bonding of crystallizer copper pipe, the heat insulating coating is selected
For 5920-SN type refractory seals glue, to meet 1 inner wall thermally equivalent of crystallizer copper pipe.Due to according to the utility model technology
A kind of crystallizer copper pipe uniformly cooled down provided by scheme, corner present position maximum temperature is not higher than 260 DEG C at work,
And the 5920-SN type refractory seals glue bonded can keep required fundamental strength being greater than 1.5MPa just under 316 DEG C of high temperature
Normal working condition is greater than 500h, to can ensure that heat insulating coating is firmly adhered to copper pipe corner, does not influence normally making for copper pipe
Use effect.
In the utility model embodiment, the thickness of the crystallizer copper corner of tube bonding heat insulating coating 2 is set between 0.04
Between~0.2mm, the capping value 0.2mm when crystallizer copper pipe sectional dimension is larger, on the contrary remove limit value 0.04mm；Insulation applies
The width of layer 2 is not more than the arc length of place corner outer surface transition arc, and is not less than 1/4 transition arc arc length.Setting crystallization
Device copper pipe corner, which bonds heat insulating coating, has certain insulation effect, and thermal coefficient is between 0.02~0.1w/k.m.In addition,
The heat insulating coating has certain high temperature resistance, and born maximum operating temperature is greater than 260 DEG C.In specific implementation process, glue
Before closing heat insulating coating, frosting treatment first should be carried out to crystallizer copper corner of tube, the frosting treatment method includes: sandblast texturing
Heat insulating coating, is then bonded in the texturing area by either laser ablation texturing again, and preparatory texturing is conducive to bonding insulation
There is stronger binding force between coating and crystallizer copper pipe, it is made unlikely during the work time to fall off.
Below by way of a more specific embodiment to technical solutions of the utility model further explanation:
As shown in figure 3, in this specific embodiment, choosing and setting for the crystallizer copper pipe partial schematic diagram of a certain model
The relevant parameters such as crystallizer copper pipe are as follows:
Copper pipe thickness 14.5mm；
Heat insulating coating can keep base at 260 ~ 300 DEG C with a thickness of 0.06mm, the born maximum operating temperature of heat insulating coating
This intensity >=1.5MPa normal operating conditions is greater than 500h；
The thermal coefficient of heat insulating coating takes 0.04w/m.k；
The thermal coefficient of copper takes 355w/m.k.
Optimal uniform cooling effect in order to obtain, corners of cross section has bonded the insulation of different wrap angles near meniscus
Coating, then by applying ANSYS business software, temperature field analysis is carried out to difference cladding angle model.
Heat insulating coating wrap angle a is chosen respectively is respectively as follows: the ゜ of a=0 (no heat insulating coating), 40 ゜, 60 ゜, 65 ゜, 68 ゜, 70 ゜, 90
゜ totally seven groups of data, through analysis copper pipe thermo parameters method it is found that as wrap angle a=70 ゜, the hot face temperature difference of copper pipe is minimum, at this time
Slab cooling more evenly, corresponding coating widths are about 27mm.
By analyzing above it is found that using the utility model crystallizer copper pipe, it is possible to reduce slab corner is cooling, to make
Green shell is cooling uniform.
In the description of the present invention, it should be understood that term " section ", " thickness ", "upper", "lower", "inner",
The orientation or positional relationship of the instructions such as "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing this reality
It is described with novel with simplified, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore should not be understood as limiting the present invention.For the ordinary skill in the art,
The concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Claims (7)
1. a kind of crystallizer copper pipe uniformly cooled down, including rectangular, rectangle or polygonal crystallizer copper pipe: it is characterized by: institute
The corner outer surface for stating crystallizer copper pipe is sized the high temperature resistant heat insulating coating that one layer of setting thickness is bonded in range, and institute
It states at crystallizer copper corner of tube bonding high temperature resistant heat insulating coating, has carried out frosting treatment in advance.
2. a kind of crystallizer copper pipe uniformly cooled down as described in claim 1, it is characterised in that: set the crystallizer copper limb
The heat insulating coating of portion's bonding is refractory seals glue, the model 5920-SN of the refractory seals glue.
3. a kind of crystallizer copper pipe uniformly cooled down as described in claim 1, it is characterised in that: set the crystallizer copper limb
The thickness that portion bonds heat insulating coating is greater than 0.04mm and is less than 0.2mm.
4. a kind of crystallizer copper pipe uniformly cooled down as described in claim 1, it is characterised in that: setting and the crystallizer copper pipe
Corner bonds the arc length that heat insulating coating width is not more than place corner outer surface transition arc, and is not less than 1/4 transition arc arc
It is long.
5. a kind of crystallizer copper pipe uniformly cooled down as described in claim 1, it is characterised in that: setting and the crystallizer copper pipe
Corner bonds the thermal coefficient of heat insulating coating between 0.02~0.1w/k.m.
6. a kind of crystallizer copper pipe uniformly cooled down as described in claim 1, it is characterised in that: choose and the crystallizer copper pipe
The born maximum operating temperature of heat insulating coating of corner bonding is kept for the fundamental strength time be greater than 500h at 260 ~ 300 DEG C.
7. a kind of crystallizer copper pipe uniformly cooled down as described in claim 1, it is characterised in that: the described and crystallizer copper pipe
Fundamental strength of the heat insulating coating of corner bonding in setting operating temperature section is greater than 1.5MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820788485.9U CN208945125U (en) | 2018-05-25 | 2018-05-25 | A kind of crystallizer copper pipe uniformly cooled down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820788485.9U CN208945125U (en) | 2018-05-25 | 2018-05-25 | A kind of crystallizer copper pipe uniformly cooled down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208945125U true CN208945125U (en) | 2019-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820788485.9U Active CN208945125U (en) | 2018-05-25 | 2018-05-25 | A kind of crystallizer copper pipe uniformly cooled down |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208945125U (en) |
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2018
- 2018-05-25 CN CN201820788485.9U patent/CN208945125U/en active Active
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