CN203556668U - Extruding cylinder for extruder - Google Patents
Extruding cylinder for extruder Download PDFInfo
- Publication number
- CN203556668U CN203556668U CN201320758494.0U CN201320758494U CN203556668U CN 203556668 U CN203556668 U CN 203556668U CN 201320758494 U CN201320758494 U CN 201320758494U CN 203556668 U CN203556668 U CN 203556668U
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- China
- Prior art keywords
- extruding cylinder
- steel wire
- steel sleeve
- recipient
- ceramic thermal
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Abstract
The utility model discloses an extruding cylinder for an extruder. The extruding cylinder comprises a steel sleeve (1), an outer steel sleeve (2) and a winding steel wire (4) and is characterized in that a ceramic thermal insulating layer (3) is added between the outer steel sleeve (2) and the winding steel wire (4). The extruding cylinder has the advantages that the ceramic thermal insulating layer has the comprehensive properties of aluminum oxide and zirconia ceramics, and is low in cost, high in strength, scientific and reasonable in preparation method, simple, practical, convenient to implement, capable of bearing severe environments such as high temperature and high pressure, good in thermal insulating effect and long in service life, and the service life of the extruding cylinder is prolonged greatly.
Description
Technical field:
The utility model relates to extruder accessory technical field, is a kind of ectrusion press recipient specifically, is mainly used in 3.6 ten thousand tons of vertical extruder.
Background technology:
3.6 ten thousand tons of vertical extruder are to produce the equipment of heavy caliber seamless steel pipe, wherein recipient is most important hot extrusion parts in extruding seamless steel pipe process, in the course of the work, not only to bear huge extrusion stress, but also to bear the high temperature action of 800 ℃ of left and right, working environment is extremely severe.So design, selection and the processing and manufacturing of recipient are particularly important.
Recipient is comprised of interior steel bushing 1, outer steel sleeve 2 generally, as shown in Figure 1.Between interior steel bushing 1 and outer steel sleeve 2, adopt interference fit, to increase the effect of resisting built-in compressive stress.Result of finite element shows: because recipient is at high temperature to work, so the intensity of steel has certain decline, add that the compression of interference fit increase can not guarantee the security of extrusion process completely.For this reason, the way that has proposed winding steel wire 4 on outer steel sleeve further increases the scheme of compression.Under cold conditions, result of calculation shows that its intensity reaches safety standard completely; But because winding steel wire 4 directly contacts with outer steel sleeve 2, so internal heat passes to winding steel wire 4 very soon, cause winding steel wire semi-finals degree sharply to decline, greatly reduce the reliability that recipient is used.
Utility model content:
The purpose of this utility model is the deficiency that overcomes above-mentioned prior art, and a kind of ectrusion press recipient is provided, and mainly solves the low problem of recipient dependability of existing extruder.
The technical solution of the utility model is: a kind of ectrusion press recipient, and it is by interior steel bushing, outer steel sleeve and winding steel wire, and its special character is, between outer steel sleeve and winding steel wire, installs ceramic thermal barrier layer additional.
Further, described ceramic thermal barrier layer is to be spliced by reinforced alumina ceramic heat shield.
A kind of ectrusion press recipient described in the utility model, the reinforced alumina ceramic heat shield that ceramic thermal barrier layer is used stablizes tetragonal phase zirconium oxide powder by key component alumina powder and yttrium and auxiliary material component is formulated; Alumina powder and yttrium are stablized the per distribution ratio that tetragonal phase zirconium oxide powder accounts for respectively key component gross weight: Al
2o
380% ~ 90%, ZrO
2+ Y
2o
310% ~ 20%; Auxiliary material comprises gum arabic, water, adhesive and defrother; The amount of gum arabic be key component alumina powder and yttrium stablize tetragonal phase zirconium oxide powder gross weight 10%, gum arabic: water is 8% ~ 10%; Its preparation technology, comprise batching, batch mixing, ball milling, mist projection granulating, compression molding, sintering circuit step, after batching, batch mixing, ball milling, powder adopts the granulation of mist projection granulating method, compression molding operation pressure is 15 ~ 20MPa, sintering circuit temperature is 1650 ℃ ~ 1680 ℃, and temperature retention time is 2.5 ~ 3h.
Wherein, alumina powder performance need reach following standard: Al
2o
3content>=99.5%, impurity content≤0.5%, α phase percentage composition>=95%, real density>=3.97g/cm
3, average grain diameter d50≤1 μ m; Wherein in impurity content, SiO
2≤ 0.06%, Fe
2o
3≤ 0.03%, Na
2o≤0.03%.
Compared with the prior art a kind of ectrusion press recipient described in the utility model has following good effect: 1, ceramic thermal barrier layer has the combination property of aluminium oxide and zirconia ceramics bi-material, cost is low, intensity is high, preparation method is scientific and reasonable, simple, be convenient to implement, its distinguishing feature is to bear the adverse circumstances such as HTHP, and good heat-insulation effect, long service life; 4, greatly improved the reliability that recipient is used.
Accompanying drawing explanation:
Fig. 1 is existing recipient structural representation;
Fig. 2 is recipient structural representation of the present utility model.
Drawing explanation:
1 interior steel bushing, 2 outer cylinder sheaths, 3 ceramic thermal barrier layers, 4 winding steel wire.
The specific embodiment:
Below in conjunction with embodiment, the utility model is described in further detail.
Embodiment 3, referring to Fig. 2, takes 277 grams of 6%(percentage by weights) yttrium stablizes tetragonal phase zirconium oxide powder, 2500 grams of high-purity alumina powders, add alumina powder and yttrium to stablize the gum arabic of tetragonal phase zirconium oxide powder gross weight 10%, then add water, gum arabic/water weight ratio is 10%; Fully mix and pass through ball milling granulation, slip mixed ball milling bucket is proceeded to mixing tank, and in mixing tank, add with ball milling bucket in the alumina balls of equal in quality; And by the PVA adhesive colloidal sol that adds conventional amount used, during batch mixing, in mixing tank, liquid level stays and accounts for 1/3 long space of bucket apart from bucket footpath portion, mixing time is 24h; Slip is squeezed into agitator after filtering, add the defrother n-octyl alcohol of conventional amount used, stir 8～12h, with bubble removing; Then adopt spray granulation to carry out granulation; Moulding in 60T hydraulic press, pressure is controlled at 20MPa; The blank of forming is packed in ultra-high-temperature tunnel kiln stove, and the highest sintering temperature is 1680 ℃, and insulation 2.5h, lowers the temperature naturally, obtains product after cooling; After cold working, obtain again finished product reinforced alumina ceramic heat shield; The above-mentioned heat shield of aluminium oxide ceramics one by one making is spliced into ceramic thermal barrier layer 3; On the recipient being formed by interior steel bushing 1, outer steel sleeve 2 and winding steel wire 4, between outer steel sleeve 2 and winding steel wire 4, install ceramic thermal barrier layer 3 additional, form ectrusion press recipient of the present utility model.
These are only preferred embodiment of the present utility model, be not used for limiting practical range of the present utility model; If do not depart from spirit and scope of the present utility model, the utility model is modified or is equal to replacement, all should be encompassed in the middle of the protection domain of the utility model claim.
Claims (2)
1. an ectrusion press recipient, it,, by interior steel bushing (1), outer steel sleeve (2) and winding steel wire (4), is characterized in that, between outer steel sleeve (2) and winding steel wire (4), installs ceramic thermal barrier layer (3) additional.
2. a kind of ectrusion press recipient according to claim 1, is characterized in that, described ceramic thermal barrier layer (3) is to be spliced by reinforced alumina ceramic heat shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320758494.0U CN203556668U (en) | 2013-11-27 | 2013-11-27 | Extruding cylinder for extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320758494.0U CN203556668U (en) | 2013-11-27 | 2013-11-27 | Extruding cylinder for extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203556668U true CN203556668U (en) | 2014-04-23 |
Family
ID=50506420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320758494.0U Expired - Fee Related CN203556668U (en) | 2013-11-27 | 2013-11-27 | Extruding cylinder for extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203556668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109013735A (en) * | 2018-08-21 | 2018-12-18 | 洛阳理工学院 | A kind of double blanks fusing soldering bimetallic plates extrusion dies of double rod and its application method |
-
2013
- 2013-11-27 CN CN201320758494.0U patent/CN203556668U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109013735A (en) * | 2018-08-21 | 2018-12-18 | 洛阳理工学院 | A kind of double blanks fusing soldering bimetallic plates extrusion dies of double rod and its application method |
| CN109013735B (en) * | 2018-08-21 | 2023-12-01 | 洛阳理工学院 | Double-rod double-blank fusion welding bimetallic plate extrusion die and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20181127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |