CN212894844U - Cold and hot circulating device for residual stress elimination - Google Patents
Cold and hot circulating device for residual stress elimination Download PDFInfo
- Publication number
- CN212894844U CN212894844U CN202020977596.1U CN202020977596U CN212894844U CN 212894844 U CN212894844 U CN 212894844U CN 202020977596 U CN202020977596 U CN 202020977596U CN 212894844 U CN212894844 U CN 212894844U
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- Prior art keywords
- heating
- plate
- residual stress
- cooling
- hole
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- Expired - Fee Related
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- 230000008030 elimination Effects 0.000 title description 2
- 238000003379 elimination reaction Methods 0.000 title description 2
- 238000010438 heat treatment Methods 0.000 claims abstract description 59
- 238000001816 cooling Methods 0.000 claims abstract description 35
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 13
- 239000011120 plywood Substances 0.000 abstract description 9
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 5
- 230000035882 stress Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The utility model discloses a cooling and heating circulating device for eliminating residual stress, which comprises an upper layer plate, a middle layer plate and a lower layer plate which are arranged in sequence from top to bottom; the heating device is characterized in that a cooling pipe is arranged on the upper plate, liquid nitrogen is introduced into the cooling pipe, the cooling pipe corresponds to the middle plate in position, a through hole is formed in the middle plate, a heating box is arranged on the lower plate, heating liquid exists in the heating box, a heating pipe is arranged in the heating box, a heating hole is formed in the surface of the heating box, and the heating hole corresponds to the through hole in the middle plate in position. The utility model discloses set up the cooling tube that leads to there is liquid nitrogen on the plywood, be provided with the heating cabinet under on the plywood, place the part after on well plywood, the part can carry out cold and hot exchange between low temperature liquid nitrogen and high temperature liquid under the slow speed exchange condition, and is easy and simple to handle, can carry out better residual stress to the aluminum alloy that the very big metallographic structure of culvert linear expansion coefficient difference handles.
Description
Technical Field
The utility model belongs to the technical field of the aluminum alloy residual stress eliminates, especially, relate to a residual stress eliminates and uses cold and hot circulating device.
Background
The metal parts are subjected to processes of welding, casting, forging, machining and the like, internal lattice deformation is caused, residual stress is inevitably generated, the existence of the residual stress can greatly reduce the ultimate strength and the fatigue strength of the parts, even the parts can be cracked or cracked, and the parts can be deformed due to the existence of the residual stress in the process of machining or use, so that the size, the use precision and the overall performance of the parts are greatly influenced.
At present, for some aluminum alloy parts, a residual stress eliminating method commonly adopted is a cold stabilization treatment method, namely, the parts are firstly put into liquid nitrogen for deep cooling, hot steam injection is rapidly adopted after the temperature is uniform, and the original residual stress is counteracted by generating the thermal stress in opposite directions through rapid heating and rapid cooling.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides a residual stress eliminates uses cold and hot circulating device to solve the problem that exists among the prior art.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a cold-hot circulating device for eliminating residual stress comprises an upper layer plate, a middle layer plate and a lower layer plate which are sequentially arranged from top to bottom; the heating device is characterized in that a cooling pipe is arranged on the upper plate, liquid nitrogen is introduced into the cooling pipe, the cooling pipe corresponds to the middle plate in position, a through hole is formed in the middle plate, a heating box is arranged on the lower plate, heating liquid exists in the heating box, a heating pipe is arranged in the heating box, a heating hole is formed in the surface of the heating box, and the heating hole corresponds to the through hole in the middle plate in position.
In a preferred embodiment of the present invention, the upper plate is provided with an upper groove, and the number of the cooling pipes is plural and is distributed at intervals along the width direction of the upper plate.
In a preferred embodiment of the present invention, the cooling pipe is connected to the upper groove through a mounting block.
In a preferred embodiment of the present invention, the lower plate is provided with a lower groove, and the heating box is located in the lower groove.
In a preferred embodiment of the present invention, there is a gap between the cooling tube and the middle layer plate, and the size of the gap is proportional to the thickness of the workpiece.
In a preferred embodiment of the present invention, the two sides of the middle layer plate are both provided with positioning components, and the positioning components comprise positioning cylinders and positioning blocks located at the piston rod ends of the positioning cylinders.
In a preferred embodiment of the present invention, the positioning cylinder is connected to the lower plate through a cylinder fixing block.
The utility model provides a defect that exists among the background art, the utility model discloses possess following beneficial effect:
the utility model discloses set up the cooling tube that leads to there is liquid nitrogen on the plywood, be provided with the heating cabinet under on the plywood, place the part after on well plywood, the part can receive the cooling action of cooling tube and the heating action of heating cabinet simultaneously, carries out cold and hot exchange between low temperature liquid nitrogen and high temperature liquid under the slow speed exchange condition, and is easy and simple to handle, can carry out better residual stress to the aluminum alloy that the very big metallographic of culvert linear expansion coefficient difference organizes.
Drawings
The present invention will be further explained with reference to the drawings and examples;
fig. 1 is a schematic overall structure diagram of the preferred embodiment of the present invention;
FIG. 2 is a schematic structural view of a heating chamber according to a preferred embodiment of the present invention;
in the figure: 1. an upper plate; 2. a middle layer plate; 3. a lower layer plate; 4. a cooling tube; 5. a through hole; 6. a heating box; 7. heating a tube; 8. heating the hole; 9. a positioning assembly; 91. positioning the air cylinder; 92. positioning blocks; 10. mounting blocks; 11. and a cylinder fixing block.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic drawings and illustrate, by way of illustration only, the basic structure of the invention, and which therefore show only the constituents relevant to the invention.
As shown in fig. 1 and 2, a cooling-heating cycle device for residual stress relief includes an upper plate 1, a middle plate 2, and a lower plate 3, which are sequentially disposed from top to bottom; be provided with cooling tube 4 on the upper plate 1, the logical liquid nitrogen that has in cooling tube 4, cooling tube 4 corresponds with 2 positions of well plywood, is equipped with through-hole 5 on the well plywood 2, is provided with heating cabinet 6 on the lower plate 3, and the heating cabinet 6 is internal to have the heating liquid, is provided with heating pipe 7 in the heating cabinet 6, and 6 surfaces of heating cabinet are equipped with heated hole 8, and heated hole 8 corresponds with 5 positions of through-hole on the plywood 2.
In this embodiment, the operator can place the part on middle floor 2, then drive the slight centre gripping of locating piece 92 with the part by locating cylinder 91 of locating component 9, the realization is to the location of part, after the location, continuously let in liquid nitrogen in the cooling tube 4, and heating pipe 7 in the heating cabinet 6 continuously heats liquid, through heated hole 8 and through-hole 5, the realization is to the heating of part, make the part can receive the cooling effect of cooling tube 4 and the heating effect of heating cabinet 6 simultaneously, carry out cold and hot exchange under the slow speed exchange condition between low temperature liquid nitrogen and high temperature liquid, eliminate the residual stress of part.
In this embodiment, the upper plate 1 is provided with an upper groove, and the number of the cooling pipes 4 is plural and is distributed at intervals along the width direction of the upper plate 1.
Specifically, the cooling pipe 4 is connected to the upper groove through the mounting block 10.
In this embodiment, the lower plate 3 is provided with a lower groove, and the heating box 6 is located in the lower groove.
In the present embodiment, there is a gap between the cooling tube 4 and the middle plate 2, and the size of the gap is proportional to the thickness of the part.
In this embodiment, the positioning assemblies 9 are disposed on two sides of the middle layer plate 2, and each positioning assembly 9 includes a positioning cylinder 91 and a positioning block 92 located at a piston rod end of the positioning cylinder 91.
Specifically, the positioning cylinder 91 is connected to the lower plate 3 through a cylinder fixing block 11.
To sum up, the utility model discloses set up the cooling tube 4 that leads to liquid nitrogen on the upper plate 1, be provided with the heating cabinet 6 on lower plate 3, place the part after on middle plate 2, the part can receive the cooling action of cooling tube 4 and the heating action of heating cabinet 6 simultaneously, carries out cold and hot exchange between low temperature liquid nitrogen and high temperature liquid under the slow speed exchange condition, and is easy and simple to handle, can carry out better residual stress to the aluminum alloy that the very big metallographic structure of culvert linear expansion coefficient difference handles.
In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A cold-hot circulating device for eliminating residual stress is characterized by comprising an upper layer plate, a middle layer plate and a lower layer plate which are sequentially arranged from top to bottom; the heating device is characterized in that a cooling pipe is arranged on the upper plate, liquid nitrogen is introduced into the cooling pipe, the cooling pipe corresponds to the middle plate in position, a through hole is formed in the middle plate, a heating box is arranged on the lower plate, heating liquid exists in the heating box, a heating pipe is arranged in the heating box, a heating hole is formed in the surface of the heating box, and the heating hole corresponds to the through hole in the middle plate in position.
2. The cooling-heating cycle device for eliminating residual stress as claimed in claim 1, wherein the upper plate is provided with an upper groove, and the number of the cooling pipes is plural and is distributed at intervals along the width direction of the upper plate.
3. A residual stress relieving cooling-heating cycle device according to claim 2, wherein the cooling pipe is connected to the upper groove by a mounting block.
4. A cooling-heating cycle apparatus for eliminating residual stress as claimed in claim 1, wherein said lower plate is provided with a lower groove, and said heating box is located in said lower groove.
5. The cooling-heating cycle device for eliminating residual stress as claimed in claim 1, wherein a gap exists between the cooling pipe and the intermediate plate, and the size of the gap is proportional to the thickness of the workpiece.
6. The cold-hot circulating device for eliminating residual stress as claimed in claim 1, wherein two sides of the middle layer plate are provided with positioning components, and the positioning components comprise a positioning cylinder and a positioning block located at a piston rod end of the positioning cylinder.
7. The cold-hot circulating device for eliminating residual stress of claim 6, wherein the positioning cylinder is connected with the lower plate through a cylinder fixing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020977596.1U CN212894844U (en) | 2020-06-02 | 2020-06-02 | Cold and hot circulating device for residual stress elimination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020977596.1U CN212894844U (en) | 2020-06-02 | 2020-06-02 | Cold and hot circulating device for residual stress elimination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212894844U true CN212894844U (en) | 2021-04-06 |
Family
ID=75267297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020977596.1U Expired - Fee Related CN212894844U (en) | 2020-06-02 | 2020-06-02 | Cold and hot circulating device for residual stress elimination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212894844U (en) |
-
2020
- 2020-06-02 CN CN202020977596.1U patent/CN212894844U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210406 |
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| CF01 | Termination of patent right due to non-payment of annual fee |