CN207414027U - A kind of angle steel cooling control device after rolling - Google Patents
A kind of angle steel cooling control device after rolling Download PDFInfo
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- CN207414027U CN207414027U CN201720948036.1U CN201720948036U CN207414027U CN 207414027 U CN207414027 U CN 207414027U CN 201720948036 U CN201720948036 U CN 201720948036U CN 207414027 U CN207414027 U CN 207414027U
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- angle steel
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Abstract
The utility model is related to a kind of angle steel cooling control device after rolling.The angle steel cooling control device after rolling sets roller repairing device in mm finishing mill unit finished product hole outlet, after angle steel comes out from finished product hole outlet, is cooled down into the roller repairing device, naturally cools to room temperature subsequently into cold bed, obtain high-strength corner iron.The angle steel cooling control device after rolling, the Quick uniform for being carried out certain time to the surfaces externally and internally with the different speeds of service, different-thickness angle steel using high pressure water is cooled down, then cold bed natural cooling is gone up again, refined angle steel grain structure, so as to while raw alloy cost is reduced, ensure the comprehensive mechanical performance of angle steel, realize the low cost production of high-strength corner iron, angle steel quality is finally made to meet national standard and Industry code requirements.
Description
Technical field
The utility model is related to a kind of angle steel cooling control device after rolling.
Background technology
Domestic production angle steel is common process at present, i.e., rolling line is gone up cold bed after being rolled without controlled rolling and controlled cooling equipment, finished product and leaned on certainly
So cooling or Air cooler are cooled to straightener permissive temperature, then are aligned, and the indexs such as steel strength are all come by chemical composition
It ensures.
Steel Controlled cooling process using more, but has many difficulties in bar in angle steel production, if angle steel is non-
It is even to easily cause steel cross section inhomogeneous cooling for symmetrical section；Finished product go out above and below milling train occiput it is curved, lateral bending is larger, easily occur
The technology troubles such as piling of steel, due to angle steel cross section for high rigidity section and take up space it is big, once piling of steel, to mill train and its
Its equipment damage is larger, and fault handling time is longer, is affected to operating rate, in addition angle steel finished product aligning post-processing hardening
It is apparent to increase, it aligns more demanding to original structure, if there are the tissues such as martensite, easily generates aligning cracking, hidden danger of quality
It is excessive.In view of above difficult, application of the controlled cooling technique in hot-rolled angle steel field at present still belongs to blank.
Utility model content
The utility model in order to make up for the deficiencies of the prior art, provide it is a kind of design rationally, improve the intensity of steel and tough
Property, reduce production cost angle steel cooling control device after rolling, solve problems of the prior art.
The utility model is achieved by the following technical solution：
A kind of angle steel cooling control device after rolling, including several water units of wearing being mounted in rack, every group is worn water unit
Hydrophone is worn including two forward directions and/or reversely wears hydrophone；
The forward direction wears front of the water inlet arranged on angle steel conveying direction of hydrophone, and the water inlet for reversely wearing hydrophone is arranged on angle
The rear of steel conveying direction, the hydrophone of wearing include the upper water spraying mechanism being oppositely arranged and lower water spraying mechanism, and the angle steel is upper
It is cooled in the cavity that water spraying mechanism and lower water spraying mechanism surround during conveying；
The upper water spraying mechanism includes water-logged base on one, is set successively along angle steel conveying direction in the lower wall of upper water-logged base
There are top nozzle and several upper cooling ducts；The top nozzle includes being respectively arranged on two groups above two leg face of angle steel spraying
Mouth, two groups of top nozzles are independently intake, and the upper cooling duct includes being respectively arranged on two groups above two leg face of angle steel cooling down
Conduit；
The lower water spraying mechanism includes water-logged base, is set successively along angle steel conveying direction in the lower wall of lower water-logged base
There is lower nozzle；The lower nozzle includes being respectively arranged nozzle under the two rows below two leg face of angle steel；
The upper water-logged base and lower water-logged base are connected by fast interface with water system, and the water system utilizes valve
Water, hydraulic pressure are adjusted.
Forward direction wears the top nozzle of hydrophone and lower nozzle is obliquely installed to the direction that angle steel conveys, and reversely wears the top nozzle of hydrophone
And the negative direction that lower nozzle is conveyed to angle steel is obliquely installed.
With angle steel vertical cross-section angle in 15 ° -60 °, lower nozzle inclination direction is vertical with angle steel to be cut top nozzle inclined direction
Face angle is in 15 ° -60 °.
The input end that water heater inlet seat is worn in forward direction is connected with an import horn mouth, is reversely wearing the import of water heater inlet seat
End is connected with a conduit.
Crystal grain refinement is one of most important schedule of reinforcement of steel, can improve the intensity of steel and improve the toughness of steel.Soon
Quickly cooling but can the finished product tissue of diagonal steel have an impact, the increase of cooling velocity, the reduction of final cooling temperature makes basic stitch ferrite
+ perlitic transformation is ferrite+pearlite+bainite, and with the promotion of cooling velocity, the reduction of final cooling temperature, bainite
Content can increase, the abnormal structures such as martensite are not contained in tissue.
The beneficial effects of the utility model are：The angle steel cooling control device after rolling, using high pressure water to different fortune
Scanning frequency degree, the surfaces externally and internally of different-thickness angle steel carry out the Quick uniform cooling of certain time, then go up cold bed natural cooling again,
Refined angle steel grain structure, so as to while raw alloy cost is reduced, ensure the comprehensive mechanical performance of angle steel, together
When be equipped with spray and lower spray cooling body, cooling velocity it is fast.By controlling cooling after rolling, make steel surface temperature by 900-
1100 DEG C quick near 500-800 DEG C, cold bed is entered back into afterwards and carries out natural cooling, it is the yield strength of angle steel, tensile strength, disconnected
Elongation, toughness improve afterwards, realize the low cost production of high-strength corner iron, angle steel quality is finally made to meet national standard and industry
Standard requirement.Compared with traditional common process, the utility model device is on the premise of few addition alloying element, with regard to that can make angle steel
Performance is met the requirements, such as strong flexor ratio, welding performance and surface quality etc., and when the angle steel of equality strength is made, this practicality is new
Type method, which can make in angle steel Mn contents averagely reduce by 0.2%, Si contents and averagely reduce by 0.1%, V, averagely reduces by 0.01%, ton steel
Profit reaches 30 yuan/ton or more.
Description of the drawings
The utility model will be further described below with reference to the accompanying drawings.
Fig. 1 is the right side structural representation of the utility model；
Fig. 2 be Fig. 1 in A-A to schematic cross-sectional view；
Fig. 3 is the schematic cross-sectional view of B-B direction in Fig. 1；
Fig. 4 is the structure diagram of top nozzle in the utility model；
Fig. 5 be Fig. 4 in C-C to schematic cross-sectional view；
Fig. 6 is the present invention looks up structural representation of Fig. 4；
Fig. 7 is the structure diagram of upper cooling duct in the utility model；
Fig. 8 be Fig. 7 in D-D to schematic cross-sectional view；
Fig. 9 is the present invention looks up structural representation of Fig. 7；
(a) is angle steel thermo parameters method figure before cooling in Figure 10, and (b) is angle steel thermo parameters method figure after cooling；
The influence figure of diagonal structure of steel when (a) is 70 DEG C/s cooling velocities in Figure 11, when (b) is 80 DEG C/s cooling velocities
The influence figure of diagonal structure of steel, the influence figure of diagonal structure of steel when (c) is 90 DEG C/s cooling velocities；
(a) is the influence figure of diagonal structure of steel under the conditions of 700 DEG C of final cooling temperatures in Figure 12, and (b) is 650 DEG C of final cooling temperature items
The influence figure of diagonal structure of steel under part, (c) are the influence figure of diagonal structure of steel under the conditions of 550 DEG C of final cooling temperatures.
In figure, 1, rack, 2, upper water-logged base, 3, top nozzle, 4, upper cooling duct, 6, lower water-logged base, 7, lower nozzle, 9,
Fast interface, 10, water system, 11, import horn mouth, 12, conduit.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this reality
It is described in detail with new.
Embodiment (1-1)：
As shown in Fig. 1-Fig. 9, which is mounted on including several in rack 1
Water unit is worn, water unit is worn for every group and wears hydrophone including two forward directions and/or reversely wear hydrophone；Forward direction wears hydrophone and reversely wears hydrophone
It cooperates, water shutoff is served to cooling water, make full use of cooling water, improve cooling efficiency.
The water inlet that the forward direction wears hydrophone is located at the front of angle steel conveying direction, and the water inlet for reversely wearing hydrophone is arranged on angle
The rear of steel conveying direction, the hydrophone of wearing include the upper water spraying mechanism being oppositely arranged and lower water spraying mechanism, and the angle steel is upper
It is cooled in the cavity that water spraying mechanism and lower water spraying mechanism surround during conveying；
The upper water spraying mechanism includes water-logged base 2 on one, in the lower wall of upper water-logged base 2 along angle steel conveying direction successively
Equipped with top nozzle 3 and several upper cooling ducts 4；The top nozzle includes being respectively arranged on two groups above two leg face of angle steel
Nozzle, two groups of top nozzles are independently intake, and the upper cooling duct 4 includes being respectively arranged cold on two groups above two leg face of angle steel
But conduit；
The lower water spraying mechanism includes water-logged base 6, in the lower wall of lower water-logged base 6 along angle steel conveying direction successively
Equipped with lower nozzle 7；The lower nozzle includes being respectively arranged nozzle under the two rows below two leg face of angle steel；
Upper water-logged base plane surrounds the cavity of a right angled triangle with lower water-logged base plane where two groups of top nozzles.
The upper water-logged base 2 and lower water-logged base lead to 6 fast interfaces 9 excessively and are connected with water system 10, the water system profit
Water, hydraulic pressure are adjusted with valve；
Forward direction wears the top nozzle 3 of hydrophone and lower nozzle 7 is obliquely installed to the direction that angle steel conveys, and reversely wears the upper spray of hydrophone
The negative direction that mouth 3 and lower nozzle 7 are conveyed to angle steel is obliquely installed.
Wear the input end of water heater inlet seat in forward direction and be connected with an import horn mouth 11, reversely wear water heater inlet seat into
Mouth end is connected with a conduit 12.
3 inclined direction of top nozzle is in 15 ° with angle steel vertical cross-section angle, lower 7 inclined direction of nozzle and angle steel vertical cross-section
Angle is in 15 °.
Embodiment (1-2)：
The present embodiment and embodiment (1-1) the difference is that：3 inclined direction of top nozzle and angle steel vertical cross-section angle
In 60 °, lower nozzle inclination direction is in 60 ° with angle steel vertical cross-section angle.
Embodiment (1-3)：
The present embodiment and embodiment (1-1) the difference is that：3 inclined direction of top nozzle and angle steel vertical cross-section angle
In 35 °, lower 7 inclined direction of nozzle is in 35 ° with angle steel vertical cross-section angle.
Any angle steel cooling control device after rolling of above-described embodiment (1-1)-(1-3) when in use, using such as
Lower step：Roller repairing device is set in mm finishing mill unit finished product hole outlet, after angle steel comes out from finished product hole outlet, into described
Roller repairing device naturally cools to room temperature subsequently into cold bed, obtains high-strength corner iron by cooling by water.
The hydraulic pressure of cooling water is 0.8MPa, flow 1000m3/ h, coolant water temperature are 10 DEG C.
Conveying speed of the angle steel in roller repairing device is 0.6m/s.
Angle steel is cooled to 500 DEG C in roller repairing device.
Temperature of angle steel when into the roller repairing device is 900 DEG C.
The angle steel is the angle steel of Q345B materials.
Experiment 1：
In order to verify the using effect of the utility model device, present utility model application people to Q345B ∠ 100*6,
Q345B ∠ 200*24 angle steel has carried out specific aim experiment.
During Q345B ∠ 100*6 roller repairings, water unit is worn using 3 groups, it is that forward direction wears water that first and second group, which is worn water unit,
Device, the 3rd group is reversely to wear hydrophone；
During Q345B ∠ 200*24 roller repairings, water unit is worn using 6 groups, it is forward direction that first to fourth group, which is worn water unit,
Hydrophone is worn, the 5th to the 6th group is reversely to wear hydrophone；
It is cooled during being conveyed in the cavity that the angle steel is surrounded in upper water spraying mechanism and lower water spraying mechanism；
The upper water-logged base and lower water-logged base are connected by fast interface with water system, and the water system utilizes valve
Water, hydraulic pressure are adjusted；After cooling water enters upper water-logged base and lower water-logged base, it is allocated to top nozzle and upper cooling duct
And lower nozzle；Cooling duct is sprayed from nozzle and cooling duct with certain orientation, certain pressure, certain flow, certain temperature
The surface of angle steel is mapped to, diagonal steel carries out the Quick uniform cooling of certain time, then goes up cold bed natural cooling again, makes angle steel brilliant
Grain tissue is refined, so as to while raw alloy cost is reduced, ensure the comprehensive mechanical performance of angle steel.
Forward direction wears the top nozzle of hydrophone and lower nozzle is obliquely installed to the direction that angle steel conveys, and reversely wears the top nozzle of hydrophone
And the negative direction that lower nozzle is conveyed to angle steel is obliquely installed；Top nozzle inclined direction is in 15 ° with angle steel vertical cross-section angle, lower spray
Mouth inclined direction is in 15 ° with angle steel vertical cross-section angle.Cool down will at the end of, reversely wear hydrophone angle steel surface is carried it is cold
But water carries out reverse blow, reduces cooling water carrying amount.
During experiment, each operating parameter is as shown in table 1 below：
Operating parameter when 1 Q345B ∠ 100*6 of table, Q345B ∠ 200*24 angle steel roller repairings：
After experiment, Q345B ∠ 100*6, the performance parameter of Q345B ∠ 200*24 angle steel are measured as shown in the following table 2：
Q345B ∠ 100*6 that 2 roller repairing of table obtains, Q345B ∠ 200*24 angle steel performance parameters
Data can see from table 2, be obtained using the utility model angle steel cooling control device after rolling and technique
Q345B ∠ 100*6, Q345B ∠ 200*24 angle steel, performance have reached the requirement of GB/T 1591-2008 standards.
Experiment 2：
Present utility model application people has measured simultaneously rolled using common process and the utility model angle steel after control bosher
Skill and device obtain during the angle steel of equality strength in angle steel corresponding chemical composition average content as shown in the following table 3：
The Q345B angle steel chemical composition average contents that 3 common process of table is prepared with the utility model technique
It can see by data in table 3, the utility model device is on the premise of few addition alloying element, with regard to that can make angle steel
Performance is met the requirements, such as strong flexor ratio, welding performance and surface quality etc., and when the angle steel of equality strength is made, this practicality is new
Type method, which can make in angle steel Mn contents averagely reduce by 0.2%, Si contents and averagely reduce by 0.1%, V, averagely reduces by 0.01%, ton steel
Profit reaches 30 yuan/ton or more.
Experiment 3：
Present utility model application people is using the ANSYS finite elements temperature front and rear to Q345B ∠ 100*6 angle steel cooling in experiment 1
Degree field is analyzed, and the results are shown in Figure 10.It can be seen that angle steel control cools down preceding temperature field point from (a) figure of Figure 10
Cloth；It can be seen that angle steel controls thermo parameters method after cooling from (b) figure of Figure 10, it can be seen that angle steel leads to from (b) figure of Figure 10
It crosses the temperature difference internal after control cooling after rolling to reduce, Temperature Distribution is more uniform.
Experiment 4：
Present utility model application people changes the speed that cooling is controlled after Q345B ∠ 100*6 angle steel rolls and temperature cold eventually, institute
Obtained angle steel tissue, as shown in Figure 11-Figure 12.It can see from the three width figure of (a), (b), (c) of Figure 11, with cooling speed
The increase of degree, bainite content increases in angle steel；It can see from the three width figure of (a), (b), (c) of Figure 12, with whole cold temperature
The reduction of degree, angle steel interior tissue are ferrite+bainite by ferrite+perlitic transformation, do not have martensite adverse tissue.
Part is not described in detail for the utility model, is the known technology of those skilled in the art of the present technique.Finally illustrate, with
Upper embodiment is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although with reference to preferred embodiment to the utility model
It is described in detail, it will be understood by those of ordinary skill in the art that, the technical solution of the utility model can be repaiied
Change or equivalent substitution, without departing from the objective and scope of technical solutions of the utility model, should all cover in the utility model
Right among.
Claims (4)
1. a kind of angle steel cooling control device after rolling, it is characterized in that, including several water units of wearing being mounted in rack, every group is worn
Water unit wears hydrophone including two forward directions and/or reversely wears hydrophone；
The forward direction wears front of the water inlet arranged on angle steel conveying direction of hydrophone, and the water inlet for reversely wearing hydrophone is defeated arranged on angle steel
The rear in direction is sent, the hydrophone of wearing includes the upper water spraying mechanism being oppositely arranged and lower water spraying mechanism, and the angle steel is in upper water spray
It is cooled in the cavity that mechanism and lower water spraying mechanism surround during conveying；
The upper water spraying mechanism includes water-logged base on one, along angle steel conveying direction successively equipped with upper in the lower wall of upper water-logged base
Nozzle and several upper cooling ducts；The top nozzle includes being respectively arranged two groups of top nozzles above two leg face of angle steel, and two
Group top nozzle is independently intake, and the upper cooling duct includes being respectively arranged cooling duct on two groups above two leg face of angle steel；
The lower water spraying mechanism includes water-logged base, under being equipped with successively along angle steel conveying direction in the lower wall of lower water-logged base
Nozzle；The lower nozzle includes being respectively arranged nozzle under the two rows below two leg face of angle steel；
The upper water-logged base and lower water-logged base are connected by fast interface with water system, and the water system is using valve to water
Amount, hydraulic pressure are adjusted.
2. angle steel cooling control device after rolling according to claim 1, it is characterized in that, forward direction wear hydrophone top nozzle and under
Nozzle is obliquely installed to the direction that angle steel conveys, and the top nozzle and lower nozzle for reversely wearing hydrophone are tilted to the negative direction that angle steel conveys
It sets.
3. angle steel cooling control device after rolling according to claim 1, it is characterized in that, top nozzle inclined direction hangs down with angle steel
For straightforward face angle in 15 ° -60 °, lower nozzle inclination direction is in 15 ° -60 ° with angle steel vertical cross-section angle.
4. angle steel cooling control device after rolling according to claim 1, it is characterized in that, forward direction wear water heater inlet seat into
Mouth end is connected with an import horn mouth, and a conduit is connected in the input end for reversely wearing water heater inlet seat.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720948036.1U CN207414027U (en) | 2017-07-31 | 2017-07-31 | A kind of angle steel cooling control device after rolling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720948036.1U CN207414027U (en) | 2017-07-31 | 2017-07-31 | A kind of angle steel cooling control device after rolling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214202A (en) * | 2017-07-31 | 2017-09-29 | 石横特钢集团有限公司 | A kind of angle steel cooling control device after rolling and technique |
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- 2017-07-31 CN CN201720948036.1U patent/CN207414027U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214202A (en) * | 2017-07-31 | 2017-09-29 | 石横特钢集团有限公司 | A kind of angle steel cooling control device after rolling and technique |
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