CN201704365U - System for controlling cooling process of heated steel plates - Google Patents
System for controlling cooling process of heated steel plates Download PDFInfo
- Publication number
- CN201704365U CN201704365U CN2010202193947U CN201020219394U CN201704365U CN 201704365 U CN201704365 U CN 201704365U CN 2010202193947 U CN2010202193947 U CN 2010202193947U CN 201020219394 U CN201020219394 U CN 201020219394U CN 201704365 U CN201704365 U CN 201704365U
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- cooling
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Abstract
The utility model relates to a system for controlling the cooling process of heated steel plates. A high-pressure cooling area 1 (1), a high-pressure cooling area 2 (2), a high-pressure cooling area 3 (3) and a low-pressure cooling area (4) are sequentially arranged; flow regulating valves (6), pneumatic stop valves (7) and manual ball valves (8) are respectively connected to the pipes of the four cooling areas; the two ends of the pipe are respectively arranged at the upper part and lower part of a steel plate channel; the three high-pressure cooling areas are connected in parallel; a high-pressure filter (11) is connected to a main circuit; a low-pressure filter (9) is connected on the circuit of the low-pressure cooling area (4); a high-pressure/low-pressure junction valve (10) is communicated with the high-pressure filter (11) and the low-pressure filter (9); and the flow regulating valves (6) are connected in series to each cooling area and connected in parallel to the pneumatic stop valves (7) and the manual ball valves (8) which are connected in series. Accordingly, the system of the utility model can solve the problem with the effect and efficiency of cooling the heated steel plates in the existing wide heavy plate mills, to which NCC (normalized-control cooling) devices are not available.
Description
Technical field
The utility model belongs to the cooling device of steel plate field, particularly relates to a kind of steel plate heating back controlled chilling system.
Background technology
The Equipment for Heating Processing configuration of Wide and Thick Slab factory generally has quenching furnance and quenching press, utilizes quenching furnance to finish the quenching of steel plate, normalized and tempered heating.Special heavy plate and some special kinds steel need heat in normalizing temperature in the thermal treatment of steel plate, when carrying out accelerated cooling process after coming out of the stove, generally are that configuration aerosol cooling apparatus quickens cooling behind normalizing furnace.Aerosol cooling apparatus rate of utilization is low, investment big (surplus in the of 3,000 ten thousand yuan), and Wide and Thick Slab factory disposes the few of this equipment, and domestic have only factories such as Wuyang, Hunan steel to be equipped with this equipment at present.If utilize the water pipe cooling of heating back, the steel plate inhomogeneous cooling is even, causes waft song and tissue, performance of steel plate inhomogeneous; Utilize quenching press to use the quenching pattern to improve roller table speed and quicken cooling, steel plate cooling back template is poor, the steel plate Qu Yanchong that wafts, and surface of steel plate has martensitic stucture, is after the tempering not satisfy the requirement of delivery technical qualification by the quenching and tempering type tissue.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of steel plate heating back controlled chilling system, to solve the effect and the efficiency of prior art light plate heating postcooling.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of steel plate heating back controlled chilling system is provided; comprise normalizing furnace; quenching press; high pressure cooling 1 district; high pressure cooling 2 districts; high pressure cooling 3 districts; the low pressure cooling zone; flow control valve; pneumatic stopping valve; manual ball valve; low-pressure filter; high-low pressure connects valve and high pressure filter; described three high pressure cooling 1 district; high pressure cooling 2 districts; high pressure cooling 3 districts; arrange in turn the low pressure cooling zone; be connected with flow control valve on the pipeline in four districts respectively; pneumatic stopping valve; manual ball valve; the conduit two in four districts be arranged in the steel plate passage on; the below; described three high pressure cooling zones are connected in parallel; be connected with high pressure filter on the main line; described low-pressure filter is connected on the circuit of low pressure cooling zone, and described high-low pressure connects valve and is communicated with high pressure filter and low-pressure filter.
Described flow control valve is connected on each cooling zone, and forms in parallel with placed in-line pneumatic stopping valve and manual ball valve.
Principle, according to steel CCT graphic representation, select suitable speed of cooling (martensitic stucture not occur after the steel plate cooling, for example the 15CrMoR steel select speed of cooling 25 ℃/below the s), speed of cooling improves, the tissue of refinement cooling back steel plate, thus intensity, the toughness of raising steel plate are improved comprehensive mechanical performance.For special heavy plate, improve the performance of steel plate core.In quenching press, use low-pressure water to quicken cooling, reduced cooling intensity, guarantee that quenching type martensitic stucture does not appear in surface of steel plate.
Beneficial effect
The utility model can satisfy steel plate in not increase equipment input and quicken the refrigerative arts demand.After steel plate quickened cooling, the martensite type tissue did not appear in the surface, satisfied the requirement of delivery technical qualification.It is good to quicken cooling back steel plate template.
Description of drawings
Fig. 1 is a structure iron of the present utility model.
Fig. 2 is a steel CCT graphic representation.
Wherein: 1-high pressure cooling 1 district, 2-high pressure cooling 2 districts, 3-high pressure cooling 3 districts, 4-low pressure cooling zone, 5-steel plate, 6-flow control valve, 7-pneumatic stopping valve, 8-manual ball valve, 9-low-pressure filter, 10-high-low pressure connect valve, 11-high pressure filter.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As shown in Figure 1; a kind of steel plate heating back controlled chilling system; comprise normalizing furnace; quenching press; high pressure cooling 1 district 1; high pressure cooling 2 districts 2; high pressure cooling 3 districts 3; low pressure cooling zone 4; flow control valve 6; pneumatic stopping valve 7; manual ball valve 8; low-pressure filter 9; high-low pressure connects valve 10 and high pressure filter 11; described three high pressure cooling 1 district 1; high pressure cooling 2 districts 2; high pressure cooling 3 districts 3; arrange in turn low pressure cooling zone 4; be connected with flow control valve 6 on the pipeline in four districts respectively; pneumatic stopping valve 7; manual ball valve 8; the conduit two in four districts be arranged in the steel plate passage on; the below; described three high pressure cooling zones are connected in parallel; be connected with high pressure filter 11 on the main line; described low-pressure filter 9 is connected on 4 circuits of low pressure cooling zone, and described high-low pressure connects valve 10 and is communicated with high pressure filter 11 and low-pressure filter 9.
Described flow control valve 6 is connected on each cooling zone, and forms in parallel with placed in-line pneumatic stopping valve 7 and manual ball valve 8.
During operation, the pressure of high pressure filter 11 is set at 0.8MPa, and the pressure of low-pressure filter 9 is set at 0.4MPa; Quenching press is set to the quenching pattern in the system.
Open high-low pressure connection valve 10 between strainer, confirm that water plant high pressure water water intaking valve is in closing condition, adjust the throughput ratio 1 of three cooling zones of quenching press high pressure 1,2,3: (1.1～2.0), flow is selected according to steel plate thickness in high pressure area 1,2,3, and low pressure cooling zone 4 flows are provided by system.
Do not supply high pressure water, only for low-pressure water; Normalizing is quickened cooling metal sheets and is passed through quenching press according to quenching press system selected velocity, and steel plate 5 final cooling temperatures are controlled between Ar1～Bs.When not needing to quicken cooling high-low pressure being connected valve 10 closes.
Claims (2)
1. a steel plate heats back controlled chilling system; comprise normalizing furnace; quenching press; high pressure cooling 1 district (1); high pressure cooling 2 districts (2); high pressure cooling 3 districts (3); low pressure cooling zone (4); flow control valve (6); pneumatic stopping valve (7); manual ball valve (8); low-pressure filter (9); high-low pressure connects valve (10) and high pressure filter (11); it is characterized in that: described high pressure cooling 1 district (1); high pressure cooling 2 districts (2); high pressure cooling 3 districts (3); arrange in turn low pressure cooling zone (4); be connected with flow control valve (6) on the pipeline in four districts respectively; pneumatic stopping valve (7); manual ball valve (8); the conduit two in four districts be arranged in the steel plate passage on; the below; described high pressure cooling 1 district (1); high pressure cooling 2 districts (2) are connected in parallel with high pressure cooling 3 districts (3) and link to each other with high pressure filter (11); described low-pressure filter (9) is connected on the circuit of low pressure cooling zone (4), and described high-low pressure connects valve (10) and is communicated in high pressure filter (11) and low-pressure filter (9).
2. a kind of steel plate heating according to claim 1 back controlled chilling system, it is characterized in that: described flow control valve (6) is connected on each cooling zone, and forms in parallel with placed in-line pneumatic stopping valve (7) and manual ball valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202193947U CN201704365U (en) | 2010-06-08 | 2010-06-08 | System for controlling cooling process of heated steel plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202193947U CN201704365U (en) | 2010-06-08 | 2010-06-08 | System for controlling cooling process of heated steel plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201704365U true CN201704365U (en) | 2011-01-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202193947U Expired - Fee Related CN201704365U (en) | 2010-06-08 | 2010-06-08 | System for controlling cooling process of heated steel plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201704365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117708A (en) * | 2019-04-30 | 2019-08-13 | 河北文丰钢铁有限公司 | A kind of process for quenching of thin specification steel plate |
-
2010
- 2010-06-08 CN CN2010202193947U patent/CN201704365U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117708A (en) * | 2019-04-30 | 2019-08-13 | 河北文丰钢铁有限公司 | A kind of process for quenching of thin specification steel plate |
| CN110117708B (en) * | 2019-04-30 | 2021-03-26 | 河北文丰钢铁有限公司 | Quenching method of thin steel plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20120608 |