CN2304481Y - Flat extruding cylinder - Google Patents
Flat extruding cylinder Download PDFInfo
- Publication number
- CN2304481Y CN2304481Y CN 97200760 CN97200760U CN2304481Y CN 2304481 Y CN2304481 Y CN 2304481Y CN 97200760 CN97200760 CN 97200760 CN 97200760 U CN97200760 U CN 97200760U CN 2304481 Y CN2304481 Y CN 2304481Y
- Authority
- CN
- China
- Prior art keywords
- cover
- extruding cylinder
- middle cover
- flat
- mating surface
- 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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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a flat extruding cylinder for large and medium size extruders, which is composed of an outer sleeve and an inner sleeve or composed of an outer sleeve, an inner sleeve and 1 to 5 layers of middle sleeves, so the total layer number of the utility model is 2 to 7. The utility model is characterized in that the external shape of the inner sleeve is formed into an elliptic cylindrical surface whose elliptical degree is 0.60 to 0.95, and the matching surfaces among all the layers adopt shrink fit whose shrink range is 0.5 mm/1000 mm to 3.5 mm/1000 mm. The utility model has the advantages of concentrated stress alleviation, material saving, higher integral strength of the flat extruding cylinder.
Description
The utility model provides a kind of flat extruding cylinder that is used on the big-and-middle-sized extruder.
Along with developing rapidly of communications and transportation and aircraft industry, the lightweight of means of transports such as train, aircraft and high speed more and more come into one's own, and the demand of large aluminum alloy wallboard section bar is increasing.This large-scale wallboard section bar only adopts flat extruding cylinder (Fig. 1 on the big-and-middle-sized extruder more than 2000 tons, referring to: Liu Jingan writes, " theory and practice of extrusion die technology ", p394, scientific and technical literature publishing house Chongqing branch, 1989.) just might produce.Yet the flat extruding cylinder of existing structure cooperates for the face of cylinder with middle cover (3) owing to interior cover (4), the profile of cover (4) is flat hole for circle endoporus (5) (the flat hole of recipient) promptly, sleeve wall thickness is seriously uneven in causing, recipient work promptly is stressed time spent of doing of (6), concentrate at the stress that thinner wall section (7) generation of interior cover is very big, form very high (circumferencial direction) tension peak value, recipient is ftractureed easily scrap, have a strong impact on the life-span of recipient.In recent years, though size and the value of interference fit between them (i.e. the magnitude of interference of locating in mating surface (8), (9), (10)) by interior cover (4), middle cover (3), middle cover (2) and the overcoat (1) of optimizing flat extruding cylinder are attempted by domestic and international many enterprises and R﹠D institution, or employing high performance material, or improve the intensity that measures such as Temperature Distribution in the cylindrical shell improve flat extruding cylinder, but effect is all undesirable, the progress of the making a breakthrough property of failing.
The purpose of this utility model is to provide the tension and the equivalent stress numerical value of cover thinner wall section in a kind of can the reduction significantly, overlaps the flat extruding cylinder with whole anti-fracture strength in improving.
Of the present utility model constituting adds in 1～5 layer cover again by interior cover, overcoat or interior cover, overcoat and forms, and always the number of plies is 2～7 layers.Its characteristics are, for the number of plies (contain 2 layers) more than 2 layers, size range is: the major axis A=200～2000mm of flat hole (15), minor axis B=100～800mm, entire outer diameter (equaling the external diameter of overcoat (11)) are the flat extruding cylinder of 1000～4000mm, entire length L=500～2500mm, and the sharp processing of interior cover (14) is become ovality B
1/ A
1=0.60～0.95 ellipse (B
1Minor axis, A for ellipse
1Be long axis of ellipse), promptly interior cover (14) is an elliptic cylinder with the mating surface (18) of middle cover (13).As required, promptly when the entire outer diameter (external diameter of overcoat (11)) of recipient be 1500～4000mm or/and operating pressure (16) when reaching 500～1000MPa, can further the mating surface between middle cover (12) and the middle cover (13) be processed into ovality and be 0.8～0.99 elliptic cylinder.Mating surface between each layer, as mating surface (18), (19), (20) between interior cover (14) and middle cover (13), middle cover (13) and middle cover (12), middle cover (12) and the overcoat (11), adopting the magnitude of interference is the hot charging cooperation of 0.5mm/1000mm～3.5mm/1000mm.
Advantage of the present utility model is:
1. because the profile of interior cover (14) has adopted elliptical shape, be that (4) of Fig. 1 are compared with profile for circular situation, the endoporus of interior cover, promptly the flat hole of recipient (15) are greatly improved with the similitude of profile, and stress is concentrated greatly and is relaxed.
2. because the flattening of interior cover (14) profile, make because the hot charging compression of the internal cover of the middle cover (13) that interference fit produced (14) increases greatly at the composition of making a concerted effort of ellipse short shaft direction, thereby reduced the tension numerical value of interior cover thin-walled position (17) (the flat hole circle of recipient angular position) circumferencial direction significantly, improved the anti-fracture strength of cover in the recipient.
3. adopting profile is cover in the oval-shaped recipient, required hot charging stress level can be reduced to 1/2～1/3 of routine (interior cover profile is for circular), thereby can reduce the hot charging magnitude of interference significantly, thereby reduce in each the thickness of cover and overcoat, the fee of material of conserve expensive alleviates the weight of flat extruding cylinder.
4. for the flat extruding cylinder that (contains four layers) more than four layers, in the middle of cover (12) also adopt elliptic cylinder (ovality is 0.8～0.99) when cooperating with mating surface between the middle cover (13), overlap the stress distribution in (13) in then can improving, further improve the bulk strength of flat extruding cylinder.
5. numerical simulation result shows, by the ovality of cover profile in changing, its scope B
1/ A
1=0.60～0.95, and between each layer, adopt suitable interference fit, the magnitude of interference is 0.5mm/1000mm～3.5mm/1000mm, the tension numerical value at cover thin-walled position (17) reduction by 20～50% and even disappearance in can making, equivalent stress intensity reduces by 15～50%, and the intensity of flat extruding cylinder increases substantially.
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is a kind of flat extruding cylinder structure in the prior art.Wherein: (1) is the overcoat of flat extruding cylinder, (2), (3) are middle cover, (4) be interior cover, (5) be the flat hole of recipient, the interior pressure of bearing when (6) working for flat extruding cylinder, (7) are the thinner wall section of interior cover, promptly easily crack the position, (8), (9), (10) are the mating surface between each layer cover, be cylindrical interference and cooperate.In addition, the actual flat extruding cylinder that uses is generally three to five-layer structure.
Fig. 2 is a kind of flat extruding cylinder structure of the present utility model, and the face of cylinder that is different from Fig. 1 cooperates (8), and interior cover (14) cooperates with mating surface employing elliptic cylinder between the middle cover (13).The number of plies of flat extruding cylinder is (mainly being the entire outer diameter of flat extruding cylinder and the size of operating pressure (16)) and decide as required, is 2～7 layers.In the middle of when being with more than 2 layers or 2 layers, it is that 0.8～0.99 elliptic cylinder cooperates that the mating surface in each between the cover also can adopt ovality.Each mating surface adopts interference fit between the elliptic cylinder or the face of cylinder (18), (19), (20), and the magnitude of interference is 0.5mm/1000mm～3.5mm/1000mm.
Claims (1)
1. flat extruding cylinder, by overcoat, interior cover, or overcoat, interior cover add in 1～5 layer cover and form, total number of plies is 2～7 layers, it is characterized in that for the number of plies more than 2 layers, size range is: the major axis A=200～2000mm of flat hole (15), minor axis B=100～800mm, entire outer diameter are the flat extruding cylinder of 1000～4000mm, axial length L=500～2500mm, and the sharp processing of interior cover (14) is become ovality B
1/ A
1=0.60～0.95 ellipse, promptly interior cover (14) is an elliptic cylinder with the mating surface (18) of middle cover (13); When the entire outer diameter of recipient is 1500～4000mm or/and operating pressure (16) when reaching 500～1000MPa, the mating surface (19) between middle cover (12) and the middle cover (13) can be processed into ovality and be 0.80～0.99 elliptic cylinder; Mating surface between each layer, as mating surface (18), (19), (20) between interior cover (14) and middle cover (13), middle cover (13) and middle cover (12), middle cover (12) and the overcoat (11), adopting the magnitude of interference is the hot charging cooperation of 0.5mm/1000mm～3.5mm/1000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97200760 CN2304481Y (en) | 1997-01-22 | 1997-01-22 | Flat extruding cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97200760 CN2304481Y (en) | 1997-01-22 | 1997-01-22 | Flat extruding cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2304481Y true CN2304481Y (en) | 1999-01-20 |
Family
ID=33922349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97200760 Expired - Fee Related CN2304481Y (en) | 1997-01-22 | 1997-01-22 | Flat extruding cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2304481Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010145087A1 (en) * | 2009-06-18 | 2010-12-23 | 西南铝业（集团）有限责任公司 | An inner sleeve of flat extrusion container and a flat extrusion container |
| CN102463445A (en) * | 2010-11-10 | 2012-05-23 | 上海重型机器厂有限公司 | Machining method for temperature measuring holes of extrusion cylinder of aluminum extruder and radial positioning hanger |
| CN103433702A (en) * | 2013-08-15 | 2013-12-11 | 中国兵器工业第五二研究所 | Manufacturing method for ultrahigh pressure cylinder body of hydraulic squeezing test equipment |
| CN103826768A (en) * | 2011-09-13 | 2014-05-28 | 日本轻金属株式会社 | Extrusion die for forming hollow material |
| CN106064182A (en) * | 2016-08-11 | 2016-11-02 | 西安工程大学 | A kind of flat extruding cylinder reducing recipient stress concentration |
| CN112620372A (en) * | 2020-12-23 | 2021-04-09 | 太原理工大学 | Mold and method for preparing magnesium alloy plate strip with weak basal plane texture by continuous differential extrusion |
-
1997
- 1997-01-22 CN CN 97200760 patent/CN2304481Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010145087A1 (en) * | 2009-06-18 | 2010-12-23 | 西南铝业（集团）有限责任公司 | An inner sleeve of flat extrusion container and a flat extrusion container |
| CN101927275B (en) * | 2009-06-18 | 2012-05-23 | 西南铝业（集团）有限责任公司 | Inner sleeve of flat extrusion barrel and flat extrusion barrel |
| CN102463445A (en) * | 2010-11-10 | 2012-05-23 | 上海重型机器厂有限公司 | Machining method for temperature measuring holes of extrusion cylinder of aluminum extruder and radial positioning hanger |
| CN102463445B (en) * | 2010-11-10 | 2013-10-30 | 上海重型机器厂有限公司 | Machining method for temperature measuring holes of extrusion cylinder of aluminum extruder and radial positioning hanger |
| CN103826768A (en) * | 2011-09-13 | 2014-05-28 | 日本轻金属株式会社 | Extrusion die for forming hollow material |
| CN103826768B (en) * | 2011-09-13 | 2016-02-24 | 日本轻金属株式会社 | Hollow material shaping extrusion die |
| CN103433702A (en) * | 2013-08-15 | 2013-12-11 | 中国兵器工业第五二研究所 | Manufacturing method for ultrahigh pressure cylinder body of hydraulic squeezing test equipment |
| CN106064182A (en) * | 2016-08-11 | 2016-11-02 | 西安工程大学 | A kind of flat extruding cylinder reducing recipient stress concentration |
| CN112620372A (en) * | 2020-12-23 | 2021-04-09 | 太原理工大学 | Mold and method for preparing magnesium alloy plate strip with weak basal plane texture by continuous differential extrusion |
| CN112620372B (en) * | 2020-12-23 | 2022-05-24 | 太原理工大学 | Mold and method for preparing weak basal plane texture magnesium alloy plate strip through continuous differential extrusion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |