CN101745558A - Device for reducing and preventing hydrostatic extrusion breakdown blast-firing damages - Google Patents
Device for reducing and preventing hydrostatic extrusion breakdown blast-firing damages Download PDFInfo
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- CN101745558A CN101745558A CN200810227591A CN200810227591A CN101745558A CN 101745558 A CN101745558 A CN 101745558A CN 200810227591 A CN200810227591 A CN 200810227591A CN 200810227591 A CN200810227591 A CN 200810227591A CN 101745558 A CN101745558 A CN 101745558A
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Abstract
The invention discloses a device for reducing and preventing hydrostatic extrusion breakdown blast-firing damages, which belongs to the technical field of extrusion processing, an extrusion cap is placed in an extrusion cylinder, the extrusion cap and a blank are in tight fit and assembly, a seal ring is arranged at the front section of the extrusion cap, a liquid channel is arranged on the outer circle of the extrusion cap, a damping hole is arranged at the bottom of the extrusion cap, extrusion liquid is filled between an extrusion rod and a mold, and the blank is extruded for obtaining a finished product. The extrusion cap moves along with the blank during the extrusion process, and the extrusion liquid can fill the whole extrusion cylinder through the liquid channel; when the extrusion is close to the end, the seal ring at the front section of the extrusion cap is in contact with the upper end surface of the mold for playing the sealing role, and then the extrusion liquid can only impose the pressure to the blank through the damping hole of the extrusion cap, thereby achieving the purpose of reducing the speed of the blank. The adoption of the device can effectively reduce and prevent the hydrostatic extrusion breakdown blast-firing damages.
Description
Technical field
The invention belongs to the extrusion process technical field, particularly a kind of device that reduces and prevent hydrostatic extrusion breakdown blast-firing damages.
Background technology
The extruding of quiet liquid is a kind of method of utilizing fluid pressure to carry out extrusion process, and the back (push away before the pressure ram or directly produced by the pump pressurization) that raises of the extruding fluid pressure in the recipient promotes blank and extrudes from mould with blank.Because extruding liquid plays good lubrication between mould and blank, so blank is out of shape in extrusion process evenly, plasticity is improved.Its advantage is that frictional force is little, and material is in the three-dimensional compressive stress state, and distortion is even, and surface quality is good.For the deformation processing of the difficult-to-deformation material of some plasticity differences, conventional pressing method is powerless, and quiet liquid pressing method can be brought into play good effect.
When utilizing quiet liquid extruding to carry out cogging, there is the problem of blowing out, when extrusion process finishes soon, be blank during,, break away from a moment of mould at blank owing to remain at a large amount of highly pressurised liquids in the recipient with complete extrusion die, the energy abrupt release of highly pressurised liquid, cause finished product to quicken go out, and cause the finished product bump to become song, fragmentation etc., promptly blow out destruction with high speed.
Blow out destruction in order to reduce, can be in methods such as discharging the place ahead pad corks.But also there are problems such as finished product bending.The present invention adopts an extruding cap to prevent and reduce the generation of hydrostatic extrusion breakdown blast-firing damages.
Summary of the invention
The purpose of this invention is to provide a kind of device that reduces and prevent hydrostatic extrusion breakdown blast-firing damages.
A kind of device that reduces and prevent hydrostatic extrusion breakdown blast-firing damages, it is characterized in that, in recipient 3, place an extruding cap 9, extruding cap 9 and the assembling of blank 6 tight fits, extruding cap 9 leading portions have that sealing ring 7, cylindrical have fluid passage 8, the bottom has damping hole 10, be full of between pressure ram 1 and the mould 4 extruding liquid 2, with blank 6 push finished product 5.
Described extruding cap 9 is made by metal material, and internal diameter equals the external diameter of blank 6, and the external diameter of extruding cap 9 is not more than the internal diameter of recipient 3.
Described sealing ring 7 is made by rubber, plastics or soft metal.
Described fluid passage 8 cross sections are circle or polygon, are positioned at sealing ring 7 external diameters position in addition, and the area of section of total fluid passage 8 accounts for 1～75% of extruding cap 9 areas of section.
Described damping hole 10 diameters are 0.1～10% of blank 6 diameters.
Described metal is carbon steel, steel alloy, copper alloy or aluminium alloy.
Described soft metal is copper, aluminium, lead or magnesium.
Beneficial effect of the present invention is: the present invention places an extruding cap in recipient, the extruding fluid flow and the pressure that are applied on the blank when utilizing the damping hole control extruding end on the extruding cap reduce finished product speed and impulsive force, thereby reach the purpose that reduces and prevent to blow out to destroy.
Description of drawings
Fig. 1 is the schematic diagram of extruding cap;
Fig. 2 is the quiet liquid extruding initial state that has extruding cap and sealing ring;
Fig. 3 is the quiet liquid extruding done state that has extruding cap and sealing ring;
Number in the figure: 1-pressure ram; 2-pushes liquid; The 3-recipient; The 4-mould; The 5-finished product; The 6-blank;
The 7-sealing ring; The 8-fluid passage; 9-pushes cap; The 10-damping hole.
The specific embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing:
Embodiment 1
A kind of device that reduces and prevent hydrostatic extrusion breakdown blast-firing damages, Fig. 1 is the schematic diagram of extruding cap, in recipient 3, place an extruding cap 9, extruding cap 9 is by carbon steel, steel alloy, metal material such as copper alloy or aluminium alloy is made, extruding cap 9 internal diameters equal the external diameter of blank 6, the external diameter of extruding cap 9 is not more than the internal diameter of recipient 3, extruding cap 9 and the assembling of blank 6 tight fits, extruding cap 9 leading portions have sealing ring 7, sealing ring 7 is by copper, aluminium, soft metal such as lead or magnesium, rubber or plastic production, extruding cap 9 cylindricals have the cross section and are circular or polygonal fluid passage 8, fluid passage 8 is positioned at the position beyond sealing ring 7 external diameters, the area of section of total fluid passage 8 accounts for 1～75% of extruding cap 9 areas of section, extruding cap 9 bottoms have 0.1～10% the damping hole 10 that diameter is blank 6 diameters, be full of between pressure ram 1 and the mould 4 extruding liquid 2, with blank 6 push finished product 5.
Fig. 2 is the quiet liquid extruding initial state that has extruding cap and sealing ring, during the extruding beginning, extruding cap 9 links to each other with blank 6 argents, in the extrusion process, extruding cap 9 in the recipient 3 is along with blank 6 moves together, extruding liquid 2 is crowded with recipients 3 by the fluid passage 8 on the extruding cap 9, keeps normal squeezed state.
When extrusion process finishes soon, extruding cap 9 contacts with mould 4 upper surfaces, stop to move and breaking away from blank 6, sealing ring 7 is crushed on extruding cap 9 and produces sealing function between mould 4 upper surface, extruding liquid 2 can only continue to exert pressure to blank 5 by damping hole 9, finished product 5 and blank 6 are at inertia and by under the pressure of damping hole liquid, continue to finish extrusion process, because extruding liquid 2 flows by damping hole 10 reduce, therefore, extruding force and extrusion speed all can reduce, thereby significantly reduce the percussion of extruding for finished product 5, reach the purpose that reduces and prevent to blow out to impact, the extruding done state as shown in Figure 3.
Can adjust speed and flow by adjusting the diameter and the length of damping hole, adjust the impulsive force and the impact velocity of blank and the last compression stage of finished product by damping hole liquid.
Claims (7)
1. device that reduces and prevent hydrostatic extrusion breakdown blast-firing damages, it is characterized in that, in recipient (3), place an extruding cap (9), extruding cap (9) and the assembling of blank (6) tight fit, extruding cap (9) leading portion has that sealing ring (7), cylindrical have fluid passage (8), the bottom has damping hole (10), be full of between pressure ram (1) and the mould (4) extruding liquid (2), with blank (6) push finished product (5).
2. a kind of device that reduces and prevent hydrostatic extrusion breakdown blast-firing damages according to claim 1, it is characterized in that, described extruding cap (9) is made by metal material, and internal diameter equals the external diameter of blank (6), and the external diameter of extruding cap (9) is not more than the internal diameter of recipient (3).
3. a kind of device that reduces and prevent hydrostatic extrusion breakdown blast-firing damages according to claim 1 is characterized in that, described sealing ring (7) is made by rubber, plastics or soft metal.
4. a kind of device that reduces and prevent hydrostatic extrusion breakdown blast-firing damages according to claim 1, it is characterized in that, described fluid passage (8) cross section is circle or polygon, be positioned at sealing ring (7) external diameter position in addition, the area of section of total fluid passage (8) accounts for 1～75% of extruding cap (9) area of section.
5. a kind of device that reduces and prevent hydrostatic extrusion breakdown blast-firing damages according to claim 1 is characterized in that, described damping hole (10) diameter is 0.1～10% of blank (a 6) diameter.
6. a kind of device that reduces and prevent hydrostatic extrusion breakdown blast-firing damages according to claim 2 is characterized in that described metal is carbon steel, steel alloy, copper alloy or aluminium alloy.
7. a kind of device that reduces and prevent hydrostatic extrusion breakdown blast-firing damages according to claim 3 is characterized in that described soft metal is copper, aluminium, lead or magnesium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810227591A CN101745558A (en) | 2008-11-28 | 2008-11-28 | Device for reducing and preventing hydrostatic extrusion breakdown blast-firing damages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810227591A CN101745558A (en) | 2008-11-28 | 2008-11-28 | Device for reducing and preventing hydrostatic extrusion breakdown blast-firing damages |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101745558A true CN101745558A (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810227591A Pending CN101745558A (en) | 2008-11-28 | 2008-11-28 | Device for reducing and preventing hydrostatic extrusion breakdown blast-firing damages |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527760A (en) * | 2011-12-27 | 2012-07-04 | 中国兵器工业第五二研究所 | Explosion-proof device for hydrostatic extrusion |
| CN103433315A (en) * | 2013-08-23 | 2013-12-11 | 中国兵器工业第五二研究所 | Method for reinforcing hydrostatic extrusion deformation of high-speed steel |
| CN104602834A (en) * | 2012-07-13 | 2015-05-06 | 波兰科学院高压物理研究所 | Method of producing high-strengh rods of austenitic steel and a rod produced by such a method |
| CN108342554A (en) * | 2018-03-12 | 2018-07-31 | 中兴能源装备有限公司 | A kind of static pressure cogging method of 022Cr19Ni10N steel |
-
2008
- 2008-11-28 CN CN200810227591A patent/CN101745558A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527760A (en) * | 2011-12-27 | 2012-07-04 | 中国兵器工业第五二研究所 | Explosion-proof device for hydrostatic extrusion |
| CN104602834A (en) * | 2012-07-13 | 2015-05-06 | 波兰科学院高压物理研究所 | Method of producing high-strengh rods of austenitic steel and a rod produced by such a method |
| CN104602834B (en) * | 2012-07-13 | 2016-10-05 | 波兰科学院高压物理研究所 | The method producing the austenitic steel bar of high intensity and the bar produced by the method |
| CN103433315A (en) * | 2013-08-23 | 2013-12-11 | 中国兵器工业第五二研究所 | Method for reinforcing hydrostatic extrusion deformation of high-speed steel |
| CN103433315B (en) * | 2013-08-23 | 2016-02-24 | 北方材料科学与工程研究院有限公司 | High-speed steel hydrostatic liquid extrusion pressing deforming strengthening method |
| CN108342554A (en) * | 2018-03-12 | 2018-07-31 | 中兴能源装备有限公司 | A kind of static pressure cogging method of 022Cr19Ni10N steel |
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Application publication date: 20100623 |