CN201728239U - Liquid nitrogen cooling die cushion - Google Patents
Liquid nitrogen cooling die cushion Download PDFInfo
- Publication number
- CN201728239U CN201728239U CN200920094439XU CN200920094439U CN201728239U CN 201728239 U CN201728239 U CN 201728239U CN 200920094439X U CN200920094439X U CN 200920094439XU CN 200920094439 U CN200920094439 U CN 200920094439U CN 201728239 U CN201728239 U CN 201728239U
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- CN
- China
- Prior art keywords
- liquid nitrogen
- special
- shaped groove
- groove
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a liquid nitrogen cooling die cushion, which comprises a special-shaped groove, a plurality of exhaust slots and a liquid nitrogen channel. The special-shaped groove surrounds a cavity, the exhaust slots are uniformly distributed between the special-shaped groove and the cavity, and a liquid nitrogen inlet is communicated with the exhaust slots via a liquid nitrogen channel and the special-shaped groove, the appearance of the special-shaped groove is similar to that of the cavity, outer ends of the exhaust slots are communicated with the special-shaped groove, openings of inner ends of the exhaust slots are arranged on the inner surface of the cavity, and liquid nitrogen enters the special-shaped groove through the inlet and the liquid nitrogen channel, and then enters the cavity (3) and the periphery of a profile via the exhaust slots after heat absorption and gasification, thereby completing profile cooling and protection.
Description
Technical field
The utility model relates to a kind of cooling device of extruding die for aluminum shaped material, especially a kind of cooled with liquid nitrogen die-cushion.
Background technology
At present, liquid nitrogen more and more is used to cool off extruding aluminium alloy mold, to increase extrusion speed.As everybody knows, ingot casting is in the section bar conversion process, because metal friction and ingot casting during extruding between section bar surface and the die surface produce a large amount of heats when thermoplastic is out of shape, cause the rising of mould, section bar and ingot casting temperature, and it is more and more obvious to become along with the increase of extrusion speed.If extrusion speed is too high, defectives such as distortion, distortion even crackle will appear in the section bar surface; Simultaneously, mould shortens to service life because of overheated.To remove these additional heat in order reaching, must to use a kind of strong cooling medium.It is found that and utilize cooled with liquid nitrogen, respond well.Liquid nitrogen vaporization is carried out at metal die and section bar surface, absorbs the heat of mould during evaporation, when the gas nitrogen after the evaporation exports through section bar, forms the inert gas ring of encirclement around section bar, stops the section bar oxidation, reaches the purpose of improving the section bar surface quality.But directly the difficulty of processing liquid nitrogen passage is bigger on die ontology, and is difficult to guarantee the uniform distribution of cooling medium at die surface.
Summary of the invention
Big in order to overcome existing mold cooled with liquid nitrogen passage difficulty of processing, cooling medium distributes uneven deficiency, and the utility model provides a kind of cooled with liquid nitrogen die-cushion, and it is handling ease not only, the cooling medium distributed uniform, and also the section bar surface quality is good.
The technical scheme that its technical problem that solves the utility model adopts is: by section configuration is the cooled with liquid nitrogen die-cushion that groove, air discharge duct, the liquid nitrogen passage of rectangle formed, section configuration is that the groove of rectangle is around one week of die cavity, several air discharge ducts are distributed between the groove and die cavity that section configuration is a rectangle, and liquid nitrogen inlet is that the groove of rectangle is connected with air discharge duct by liquid nitrogen passage, section configuration.
The outer end of several air discharge ducts and section configuration are that the groove of rectangle is connected, and the inner end is opened on mold cavity surface.
The reasonable in design of liquid nitrogen passage of the present utility model, special-shaped groove, air discharge duct, coolant distribution is even, when cooling off mold heat, also can improve the section bar surface quality, and is simple in structure, makes easily.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a front view of the present utility model.
Fig. 2 is the left view of Fig. 1.
Among the figure: 1, section configuration is the groove of rectangle; 2, air discharge duct; 3, die cavity; 4, liquid nitrogen inlet; 5, liquid nitrogen passage.
The specific embodiment
In Fig. 1, Fig. 2, the utility model is that groove, air discharge duct, the liquid nitrogen passage of rectangle formed by section configuration.Section configuration be the groove (1) of rectangle around (3) one weeks of die cavity, the profile profiling mutually of its profile and die cavity (3).Several air discharge ducts (2) are distributed between groove that section configuration is a rectangle (1) and the die cavity (3), and the outer end of air discharge duct and section configuration are that the groove of rectangle is connected inner end chap die cavity (3) inner surface.Liquid nitrogen inlet (4) is that the groove of rectangle is connected with air discharge duct by liquid nitrogen passage (5), section configuration.Liquid nitrogen enters the groove that section configuration is a rectangle through inlet, liquid nitrogen passage, enters die cavity (3) with around the section bar by each air discharge duct behind the endothermic gasification, finishes cooling and the purpose of protecting section bar.
Claims (2)
1. cooled with liquid nitrogen die-cushion, by section configuration is that groove, air discharge duct, the liquid nitrogen passage of rectangle formed, it is characterized in that: section configuration is that the groove (1) of rectangle is around (3) one weeks of die cavity, several air discharge ducts (2) are distributed between the groove and die cavity that section configuration is a rectangle, and liquid nitrogen inlet (4) is that the groove (1) of rectangle is connected with air discharge duct (2) by liquid nitrogen passage (5), section configuration.
2. cooled with liquid nitrogen die-cushion according to claim 1 is characterized in that: the outer end of several air discharge ducts (2) and section configuration are that the groove (1) of rectangle is connected, and its inner end is opened on the inner surface of die cavity (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920094439XU CN201728239U (en) | 2009-09-25 | 2009-09-25 | Liquid nitrogen cooling die cushion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920094439XU CN201728239U (en) | 2009-09-25 | 2009-09-25 | Liquid nitrogen cooling die cushion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201728239U true CN201728239U (en) | 2011-02-02 |
Family
ID=43519397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920094439XU Expired - Fee Related CN201728239U (en) | 2009-09-25 | 2009-09-25 | Liquid nitrogen cooling die cushion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201728239U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108500076A (en) * | 2018-05-22 | 2018-09-07 | 浙江海亮新材料有限公司 | A kind of device and method accurately controlling aluminium section hot-extrusion die local temperature |
-
2009
- 2009-09-25 CN CN200920094439XU patent/CN201728239U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108500076A (en) * | 2018-05-22 | 2018-09-07 | 浙江海亮新材料有限公司 | A kind of device and method accurately controlling aluminium section hot-extrusion die local temperature |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Panshi Feiyue Mold Co., Ltd. Assignor: Liu Yuetang Contract record no.: 2010220000059 Denomination of utility model: Liquid nitrogen cooling die cushion Granted publication date: 20110202 License type: Exclusive License Record date: 20101209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20140925 |
|
| EXPY | Termination of patent right or utility model |