CN201058485Y - Thread cover for parallel double-screw extruder - Google Patents
Thread cover for parallel double-screw extruder Download PDFInfo
- Publication number
- CN201058485Y CN201058485Y CNU2007200362582U CN200720036258U CN201058485Y CN 201058485 Y CN201058485 Y CN 201058485Y CN U2007200362582 U CNU2007200362582 U CN U2007200362582U CN 200720036258 U CN200720036258 U CN 200720036258U CN 201058485 Y CN201058485 Y CN 201058485Y
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- steel
- threaded sleeve
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- model
- thread bush
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a threaded sleeve used for a co-rotating double-screw extruder, which comprises a screw thread arranged around and a threaded sleeve with the center being provided with an inner spline matched with a splined shaft, wherein, and the threaded sleeve adopts the cold-work die steel, in particular to the chromium-tungsten-molybdenum-vanadium steel (Cr4W2MoV). The utility model has advantages that: the martensitic structure of the cold-work die steel---chromium-tungsten-molybdenum-vanadium steel (Cr4W2MoV) is superior to the high speed tool steel W6Mo5Cr4V, and the eutectic carbide particles are fine and small and are evenly distributed, component parts will not be broken or cracked easily, and the utility model has obvious price competitive edge compared with the high speed tool steel under the condition of meeting the use technique requirements of the threaded sleeve used for the co-rotating double-screw extruder.
Description
Technical field
The utility model relates to a kind of thread bush, especially a kind of thread bush that is used for parallel dual-screw extruding machine.
Background technology
Thread bush is the necessary accessory that is used for mixed material and axial convey materials in the extruder, because the working environment of thread bush is more abominable, select for use high-speed tool steel W6Mo5Cr4V to make for a long time always, have high rigidity, high-wearing feature and high heat-resistant stability to guarantee it.Because among the high-speed tool steel W6Mo5Cr4V banded carbide is arranged, part weares and teares easily in the use, and the part cracking can occur, simultaneously, the high-speed tool steel relative cost is also than higher.
Cold work die steel---the performance of chromium tungsten vanadium steel (Cr4W2MoV) is more stable, compares with cold work die steel in high alloy through Cr12, Cr12MoV, obviously improves with its die life of making.The eutectic carbide particle of this steel is tiny, is evenly distributed, and has higher quenching degree and hardenability, and wearability and dimensional stability preferably.But the hot processing temperature scope of steel is narrower, resistance of deformation is bigger, it generally is used to make various punch dies, cold heading die, blanking die, drawing die, Cold Extruding Die and screw plate etc., and the thread bush of making parallel dual-screw extruding machine of this cold work die steel does not appear in the newspapers.
Summary of the invention
The purpose of this utility model is: adopt high-speed tool steel W6Mo5Cr4V to make at the thread bush that is used for parallel dual-screw extruding machine at present, this high-speed tool steel relative cost is than higher, simultaneously, also has banded carbide among the high-speed tool steel W6Mo5Cr4V, part weares and teares easily and the practical problem of part cracking occurs in the use, and a kind of new thread bush that is used for double screw extruder is provided.
The purpose of this utility model is achieved in that a kind of thread bush that is used for parallel dual-screw extruding machine, is provided with screw thread around comprising, the center is provided with the thread bush of the internal spline that mates with splined shaft, it is characterized in that: described thread bush adopts cold work die steel.
In the utility model: described cold work die steel is a chromium tungsten vanadium steel (Cr4W2MoV).
Advantage of the present utility model is: cold work die steel---the martensitic structure of chromium tungsten vanadium steel (Cr4W2MoV) is better than high-speed tool steel W6Mo5Cr4V, its eutectic carbide particle is tiny, be evenly distributed, part is not easy wearing and tearing or cracking, under the prerequisite that the operation technique that satisfies the thread bush that is used for parallel dual-screw extruding machine requires, has tangible price competitiveness than high-speed tool steel.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1.
Among the figure: 1, screw thread, 2, internal spline.
The specific embodiment:
Accompanying drawing provides the concrete structure of the utility model embodiment without limitation, below in conjunction with specific embodiment the utility model is done to describe further.
By Fig. 1 Fig. 2 as seen, be provided with screw thread 1 on every side, the center is provided with the thread bush of the internal spline 2 that mates with splined shaft, and this thread bush adopts cold work die steel.In the present embodiment, described cold work die steel adopts chromium tungsten vanadium steel (Cr4W2MoV).
The thread bush that is used for parallel dual-screw extruding machine that adopts cold work die steel chromium tungsten vanadium steel (Cr4W2MoV) and high-speed tool steel W6Mo5Cr4V to make respectively, while was the continuous experimental operation of enterprises such as ShangHai Migsam Plastic Cement Co., Ltd. two months under the situation of maintaining secrecy, compare experiment, do not find obviously difference and wearing and tearing, do not find to exist technological deficiency yet, because the price of cold work die steel is starkly lower than high-speed tool steel, can reduce the production cost of enterprise greatly.
Claims (2)
1. a thread bush that is used for parallel dual-screw extruding machine is provided with screw thread around comprising, the center is provided with the thread bush of the internal spline that mates with splined shaft, it is characterized in that: described thread bush adopts cold work die steel.
2. the thread bush that is used for parallel dual-screw extruding machine according to claim 1 is characterized in that: described cold work die steel is chromium tungsten vanadium steel Cr4W2MoV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200362582U CN201058485Y (en) | 2007-04-19 | 2007-04-19 | Thread cover for parallel double-screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200362582U CN201058485Y (en) | 2007-04-19 | 2007-04-19 | Thread cover for parallel double-screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201058485Y true CN201058485Y (en) | 2008-05-14 |
Family
ID=39406940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200362582U Expired - Fee Related CN201058485Y (en) | 2007-04-19 | 2007-04-19 | Thread cover for parallel double-screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201058485Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514987A (en) * | 2016-10-24 | 2017-03-22 | 东莞市科亚新材料技术有限公司 | Screw element in twin-screw extruder as well as manufacturing method for screw element and twin-screw extruder |
| CN107107442A (en) * | 2014-10-27 | 2017-08-29 | 东芝机械株式会社 | Extruder screw rod, screw element, extruder and pushout |
-
2007
- 2007-04-19 CN CNU2007200362582U patent/CN201058485Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107107442A (en) * | 2014-10-27 | 2017-08-29 | 东芝机械株式会社 | Extruder screw rod, screw element, extruder and pushout |
| CN107107442B (en) * | 2014-10-27 | 2019-07-16 | 东芝机械株式会社 | Extruder screw rod, screw element, extruder and pushout |
| US11072104B2 (en) | 2014-10-27 | 2021-07-27 | Shibaura Machine Co., Ltd. | Screw for extruder comprising a passage crossing over between adjacent cylindrical bodies |
| US11820062B2 (en) | 2014-10-27 | 2023-11-21 | Shibaura Machine Co., Ltd. | Extrusion methods wherein material is guided through a passage crossing over between adjacent cylindrical bodies |
| CN106514987A (en) * | 2016-10-24 | 2017-03-22 | 东莞市科亚新材料技术有限公司 | Screw element in twin-screw extruder as well as manufacturing method for screw element and twin-screw extruder |
| CN106514987B (en) * | 2016-10-24 | 2019-12-03 | 东莞市科亚新材料技术有限公司 | A kind of screw element manufacturing method of double screw extruder |
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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: 20080514 Termination date: 20110419 |