CN207062333U - A kind of quenching bed constant pressure cooling water system - Google Patents
A kind of quenching bed constant pressure cooling water system Download PDFInfo
- Publication number
- CN207062333U CN207062333U CN201720818696.8U CN201720818696U CN207062333U CN 207062333 U CN207062333 U CN 207062333U CN 201720818696 U CN201720818696 U CN 201720818696U CN 207062333 U CN207062333 U CN 207062333U
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- pressure
- cooling water
- quenching
- quenching bed
- water pump
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- Expired - Fee Related
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- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The utility model discloses a kind of quenching bed constant pressure cooling water system, including pond and water pump, cooling water in pond is pipelined in quenching bed by water pump to be used to quickly cool down high temperature workpiece, a pressure relief device is additionally provided between water pump and quenching bed, pressure relief device is series in pipeline, and pressure relief device is provided with return pipe, and return pipe is located between pressure relief device and pond, unnecessary cooling water flows back to pond through return pipe, to keep the static pressure in pipeline constant.The quenching bed constant pressure cooling water system, water pump can be made to keep work when quenching bed is not keyed up, need a period of time just to reach the situation of stable state when not only avoid water pump and smoulder, and also avoid unlatching.By pressure relief device, the static pressure of the cooling water in pipeline can be maintained, cooling water horse back can when quenching bed is started working reaches stable state, so as to so that workpiece stress is identical, produce different deformation, thus reach more preferable quenching effect.
Description
Technical field
Intermetallic composite coating Field of Heat-treatment is the utility model is related to, more particularly to a kind of quenching bed constant pressure cooling water system.
Background technology
When for example large-scale plate of metalwork is heat-treated, first metalwork is needed to be cooled to normal temperature after rolling or directly quenched
Fire obtains required product or semi-finished product, in cooling procedure, in order to ensure that the mechanical performance of large-scale plate requires to want during cooling
Uniformly, constant speed and rapidly plate is cooled；But existing workpiece heat and cooling procedure in, due to top layer and center portion
Cooling velocity and inconsistent, the formation temperature difference of time, may result in volumetric expansion and shrink uneven and produce thermal stress, answered in heat
In the presence of power, because top layer start temperature is less than center portion, shrinks also greater than center portion and make center portion tension, when cool down is complete,
Because center portion finally cools down, volume contraction can not freely carry out and make top layer compression center portion tension, and this phenomenon is cooled speed
The influence of the factors such as degree, material composition and Technology for Heating Processing, when cooling velocity is faster, phosphorus content and alloying component are higher, cooling
During thermal stress effect under it is caused it is uneven plastic deformation it is bigger, the residual stress eventually formed is just bigger；The opposing party
Face workpiece in heat treatment process because the change of tissue is austenite to during martensite transfor mation, because the increase of specific volume can be with work
The expansion of part volume, each position priority phase transformation of workpiece, volume length is caused to make great difference and produce structural stress.Structural stress changes
Final result be top layer tension stress, center portion compression chord, just with thermal stress on the contrary, thus to quench cooling velocity be one
Quenching quality can be influenceed and an important factor for determine residual stress, and one hardening flaw can be given it is important or even decisive
The factor of influence.In order to reach the purpose of quenching, it is often necessary to accelerate cooling velocity of the part in high temperature section, and past
The critical hardening cooling velocity of workpiece can just obtain martensitic structure.
Existing quenching bed be typically all using water pump conveying cooling water, during starting mode of pump, its cooling water conveyed
Flow generally requires to can be only achieved stable state for a period of time, and this allows for the cooling water pressure non-stationary flow in quenching process
Uneven, the cooling velocity in the same section of workpiece differs, so that workpiece stress is different, caused deformation is different, causes work
Part deformation effect quenching effect.
Utility model content
The purpose of this utility model is to provide a kind of quenching bed constant pressure cooling water system.
According to one side of the present utility model, there is provided a kind of quenching bed constant pressure cooling water system, including pond and water
Pump, the cooling water in pond is pipelined in quenching bed by water pump to be used to quickly cool down high temperature workpiece, and water pump is with quenching
A pressure relief device is additionally provided between grate, pressure relief device is series in pipeline, and pressure relief device is provided with return pipe, and return pipe is located at
Between pressure relief device and pond, pressure relief device is used to keep the pressure of pipeline to be not more than preset value, when manifold pressure exceedes in advance
If during value, unnecessary cooling water flows back to pond through return pipe, to keep the static pressure in pipeline constant.Here static pressure
When referring to that quenching bed does not work, i.e., the pressure of cooling water when pipeline water side is closed inside pipeline.
In some embodiments, high pressure water tank is additionally provided between water pump and quenching bed.High pressure water tank has buffering
Effect, the pressure of cooling water and flow can be made more stable.
In some embodiments, water pump includes feed pump and secondary water pump, when quenching bed is shut down, only opens feed pump, secondary
Water pump is closed, and feed pump is used to maintain the static pressure in pipeline, and cooling water starts to flow after quenching bed start, and secondary water pump is opened
Open, worked simultaneously with feed pump, so that the pressure and flow constant of the cooling water in quenching bed.It is possible thereby to avoid water
Pump dallies for a long time, more saves.
In some embodiments, secondary water pump links with quenching bed.
In some embodiments, high pressure water tank is located between pressure relief device and quenching bed.
In some embodiments, the pipeline of secondary water pump is joined directly together around pressure relief device with high pressure water tank.
Using the quenching bed constant pressure cooling water system of above technical scheme, pressure release dress is provided between water pump and quenching bed
Put, cooling water can also flow back to pond by return pipe.Thus, it is possible to water pump is set to keep work when quenching bed is not keyed up, no
A period of time is needed just to reach the feelings of stable state when only avoiding water pump and smoulder and cause to damage, and also avoid unlatching
Condition.By pressure relief device, the static pressure of the cooling water in pipeline can be maintained, cooling water when quenching bed is started working at once
Can reaches stable state.Cooling water flow is uniform, and the cooling velocity in the same section of workpiece is with regard to identical, so as to so that workpiece
Stress is identical, will not produce different deformation, has thus reached more preferable quenching effect.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the quenching bed constant pressure cooling water system of embodiment of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 schematically shows a kind of quenching bed constant pressure cooling water system according to a kind of embodiment of the present utility model
System.As illustrated, the device includes pond 1 and water pump 2.
Cooling water in pond 1 is transported in quenching bed 4 by water pump 2 by pipeline 3 to be used to quickly cool down high temperature workpiece.
The flow direction of cooling water is as shown by arrows in FIG..
Wherein, a pressure relief device 5 is additionally provided between water pump 2 and quenching bed 4.
Pressure relief device 5 is series in pipeline 3.
Pressure relief device 5 is provided with return pipe 6.
Return pipe 6 is located between pressure relief device 5 and pond 2.
Pressure relief device 5 is used to keep the pressure of pipeline 3 to be not more than preset value.
When pressure exceedes preset value in pipeline 3, unnecessary cooling water flows back to pond through return pipe 6, to keep in pipeline 3
Static pressure it is constant.
In the present embodiment, high pressure water tank 7 is additionally provided between water pump 2 and quenching bed 4.
In the present embodiment, water pump 2 includes feed pump 21 and secondary water pump 22.
When quenching bed 4 is shut down, feed pump 21 is only opened, secondary water pump 22 is closed, and feed pump 21 is used to remain quiet in pipeline 3
State pressure.
Cooling water starts to flow after quenching bed 4 is started shooting, and secondary water pump 22 is opened, and is worked simultaneously with feed pump 21, so that quenching
The pressure and flow constant of cooling water in grate 4.
Secondary water pump 22 links with quenching bed 4.
High pressure water tank 7 is located between pressure relief device 5 and quenching bed 4.
The pipeline 3 of secondary water pump 22 is joined directly together around pressure relief device 5 with high pressure water tank 7.
Using the quenching bed constant pressure cooling water system of above technical scheme, it is provided with and lets out between feed pump 21 and quenching bed 4
Pressure device 5, cooling water can also flow back to pond 1 by return pipe 6.Thus, it is possible to make feed pump 21 when quenching bed 4 is not keyed up
Work is kept, needs a period of time just to reach the situation of stable state when avoiding unlatching., can be with by pressure relief device 5
The static pressure of the cooling water in pipeline 3 is maintained, cooling water horse back can when quenching bed 4 is started working reaches stable shape
State.Cooling water flow is uniform, and the cooling velocity in the same section of workpiece is with regard to identical, so as to so that workpiece stress is identical, produce
Raw different deformation, has thus reached more preferable quenching effect.
Above-described is only some embodiments of the present utility model.For the person of ordinary skill of the art,
On the premise of not departing from the utility model and creating design, various modifications and improvements can be made, these belong to this practicality
New protection domain.
Claims (6)
1. a kind of quenching bed constant pressure cooling water system, it is characterised in that including pond and water pump, water pump is by the cooling water in pond
It is pipelined in quenching bed and is used to quickly cool down high temperature workpiece, a pressure release dress is additionally provided between water pump and quenching bed
Put, pressure relief device is series in pipeline, and pressure relief device is provided with return pipe, and return pipe is located between pressure relief device and pond, pressure release
Device is used to keep the pressure of pipeline to be not more than preset value, and when manifold pressure exceedes preset value, unnecessary cooling water passes through back
Water pipe flows back to pond, to keep the static pressure in pipeline constant.
2. quenching bed constant pressure cooling water system according to claim 1, it is characterised in that also set between water pump and quenching bed
There is high pressure water tank.
3. quenching bed constant pressure cooling water system according to claim 1, it is characterised in that water pump includes feed pump and secondary water
Pump, when quenching bed is shut down, feed pump is only opened, secondary water pump is closed, and feed pump is used to maintain the static pressure in pipeline, quenching bed
Cooling water starts to flow after start, and secondary water pump is opened, and is worked simultaneously with feed pump, so that the pressure of the cooling water in quenching bed
And flow constant.
4. quenching bed constant pressure cooling water system according to claim 3, it is characterised in that secondary water pump links with quenching bed.
5. quenching bed constant pressure cooling water system according to claim 4, it is characterised in that high pressure water tank fills located at pressure release
Put between quenching bed.
6. quenching bed constant pressure cooling water system according to claim 5, it is characterised in that the pipeline of secondary water pump bypasses pressure release
Device is joined directly together with high pressure water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720818696.8U CN207062333U (en) | 2017-07-07 | 2017-07-07 | A kind of quenching bed constant pressure cooling water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720818696.8U CN207062333U (en) | 2017-07-07 | 2017-07-07 | A kind of quenching bed constant pressure cooling water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207062333U true CN207062333U (en) | 2018-03-02 |
Family
ID=61507395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720818696.8U Expired - Fee Related CN207062333U (en) | 2017-07-07 | 2017-07-07 | A kind of quenching bed constant pressure cooling water system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207062333U (en) |
-
2017
- 2017-07-07 CN CN201720818696.8U patent/CN207062333U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 Termination date: 20190707 |