CN201366449Y - Extrusion die with equal-passage spiral cavities for molding magnesium alloy square rods - Google Patents
Extrusion die with equal-passage spiral cavities for molding magnesium alloy square rods Download PDFInfo
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- CN201366449Y CN201366449Y CNU2009200989028U CN200920098902U CN201366449Y CN 201366449 Y CN201366449 Y CN 201366449Y CN U2009200989028 U CNU2009200989028 U CN U2009200989028U CN 200920098902 U CN200920098902 U CN 200920098902U CN 201366449 Y CN201366449 Y CN 201366449Y
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Abstract
Disclosed is an extrusion die with an equal-passage spiral cavity for molding magnesium alloy square rods. Currently, magnesium alloy rods made through extrusion molding have uneven texture at the places with equal radius due to that the bending radii of the blanks are different in the bending process. The extrusion die with an equal-passage spiral cavity for molding magnesium alloy square rods comprises a fixed plate(1) which is connected and fixed with a lower die(2); the lower die and an upper die(3) are fixed through positioning pins and are connected with each other through bolts(5); the curved surfaces of the opposite end faces of the upper die and the lower die form a passage(6); and a spiral passage(9) is arranged at the middle segment of the passage. The extrusion die is used for producing magnesium alloy rods through extrusion molding.
Description
Technical field:
The utility model relates to a kind of mould, is specifically related to a kind of extrusion die of producing the employed equal-passage spiral cavity for molding of magnesium alloy square sectional bar.
Background technology:
Magnesium alloy density in the structural metallic materials that present engineering is used is the lightest, is 21 century one of the most promising metal, and its outstanding performance has obtained the extensive concern of engineering circle.At present the extrusion forming technology of magnesium alloy rod is a relatively more novel and mature technique day by day.The extrusion modling of magnesium alloy rod equal channel angle has that forming property is good, precision is high, operation is simple, easy to operate, products obtained therefrom excellent performance, advantage such as is widely used.But because the bending radius difference of blank during brake forming, cause, therefore limited people have homologue and aspect of performance in radius such as ask for something to magnesium alloy experimental study at the tissue of same radius place material and inhomogeneous.
Summary of the invention:
The purpose of this utility model provides a kind of extrusion die of equal-passage spiral cavity for molding magnesium alloy square rods, and is identical at the shaping radius of centroid portion same radius place rotational forming according to material, realize producing material etc. radius have homologue and performance.
Above-mentioned purpose realizes by following technical scheme:
The extrusion die of equal-passage spiral cavity for molding magnesium alloy square rods, its composition comprises: fixed head, described fixed head is connected and fixed counterdie, described counterdie and patrix are fixed with alignment pin and are linked together by bolt, the curved surface of described upper die and lower die opposing end surface forms passage, and described passage stage casing is for revolving the shape passage.
The extrusion die of described equal-passage spiral cavity for molding magnesium alloy square rods, described passage is formed by the described shape passage that revolves of fillet linking passage connection by the straight channel at two ends.
The extrusion die of described equal-passage spiral cavity for molding magnesium alloy square rods, described passage are 90 ° of passages of dextrorotation or left-handed 90 ° of passages.
The beneficial effects of the utility model:
1. the utility model adopts that a different set of channel group is synthetic a kind ofly compound revolves the squeezing passage that the shape passage is attached most importance to the stage casing, utilizes this particular structure, realizes the extrusion process production process that it is unique.Gained becomes goods to have identical texture characteristic at the same radius place, the refined crystalline strengthening degree from material heart portion to around be and increase progressively trend, the surface microstructure of the bar of producing is tiny, thus have higher toughness, thereby mechanical performance is greatly improved.The dynamic recrystallization of the utility model by producing in the processing of the hot extrusion in revolving the shape passage, obtain the less and uniform magnesium alloy of structural constituent of crystallite dimension, overcome the defective of prior art, the material at distance heart portion same radius place has identical tissue signature.Significantly improved the uniformity of material.
2. the utility model equipment is light and handy, and small investment is easy to dismounting, and safety coefficient is higher.
3. the utility model is simple in structure, and cavity shape can be adjusted according to the performance and the production needs of material, and mold heated is convenient, is easy to control processing temperature, the adjusting process parameter.
Description of drawings:
Accompanying drawing 1 is the structural representation of this product.
Accompanying drawing 2 is A-A cutaway views of accompanying drawing 1.
Accompanying drawing 3 is B-B cutaway views of accompanying drawing 1.
Accompanying drawing 4 is C-C place channel cross-section cutaway views of accompanying drawing 1.
Accompanying drawing 5 is D-D place channel cross-section cutaway views of accompanying drawing 1.
Accompanying drawing 6 is E-E place channel cross-section cutaway views of accompanying drawing 1.
Accompanying drawing 7 is F-F place channel cross-section cutaway views of accompanying drawing 1.
The specific embodiment:
Embodiment 1:
The extrusion die of equal-passage spiral cavity for molding magnesium alloy square rods, its composition comprises: fixed head 1, described fixed head is connected and fixed counterdie 2, described counterdie and patrix 3 usefulness alignment pins 4 are fixed and are linked together by bolt 5, the curved surface of described upper die and lower die opposing end surface forms passage 6, and described passage stage casing is for revolving shape passage 9.
The extrusion die of described equal-passage spiral cavity for molding magnesium alloy square rods is fixed on the workbench, makes in the extrusion process process mould static, be not moved or rotate with respect to workbench.Square rods revolves deformation shape in passage under the effect of extruding force.When the shaping magnesium alloy, used extrusion temperature scope is 100 ℃-300 ℃, and extrusion speed is 2mm/s-4mm/s.In the forming process,, apply a back pressure and smear lubricant in channel interior in channel outlet for preventing material damage.The utility model also can be used for the extrusion modling of other alloy square rods.
Embodiment 2:
The extrusion die of above-mentioned equal-passage spiral cavity for molding magnesium alloy square rods, described passage is formed by the described shape passage that revolves of fillet linking passage 8 connections by the straight channel 7 at two ends.
Described passage by straight channel, fillet be connected passage, revolve the shape passage, fillet is connected passage, straight channel connects in turn and combines.Channel cross-section is the square of 20mm * 20mm, and the bight is the rounding of 1mm.
The composition of described passage comprises: two straight channel, two are connected fillet passage and one and revolve the shape passage.Described straight channel is positioned at both mold ends, is respectively the import and the outlet of material; The described shape passage that revolves is positioned at the mould middle part, is the main deformed region of extrusion modling; Described fillet linking passage is positioned at and revolves shape passage two ends, links to each other with the straight channel at two ends respectively, and its effect mainly is to be connected straight channel and to revolve the shape passage, prevents that the stiff sharp edge linking between two passages from damaging the magnesium alloy materials of being processed.
Adopt the magnesium alloy materials charge length be 80mm between the 90mm, cross section is that the length of side is the square of 20mm, and the rounding that radius 1mm is carried out in the bight is handled.The magnesium alloy rod blank is pushed straight channel in die inlet by push rod in process, successively through fillet be connected passage, revolve the shape passage, fillet is connected passage and finishes and revolve after the deformation shape by straight channel after becoming goods and advising straight processing, finishes whole process.
Described process temperature range of choice is between 100 ℃-300 ℃, blank carries out preheating with mould after putting into straight channel, the insulation certain hour, it is temperature required up to process finishing to make mold temperature remain on processing by external heater before producing and in the production process.
Embodiment 3:
The extrusion die of above-mentioned equal-passage spiral cavity for molding magnesium alloy square rods, described passage are 90 ° of passages of dextrorotation or left-handed 90 ° of passages.
Arrow 10 expression back pressure directions in the accompanying drawing 2, the arrow 11 expression directions of extrusion, 12 stocks of indicating to process.
After blank is entered by the right-hand member of passage, finish left-handed 90 ° through one group of passage in turn and revolve the shape extruding.
With length is that the magnesium alloy rod of 80-90mm is processed into the blank that cross section is the square shape of 20mm, and radius is carried out in its bight is that the rounding of 1mm is handled, then it is put into straight channel, material is heated to 240-250 ℃ with mould, be incubated 20-30 minute,, material is clamp-oned revolving of mould revolve deformation shape in the shape passage with the speed of the 2mm/s direction of extrusion shown in the arrow 11 in the accompanying drawing 2 with push rod.Be advanced to push rod and also have the 2mm place, stop to advance from fillet linking passage.
Deenergization is opened connecting bolt, removes patrix, and bar is cooled off in air, takes out into goods then, the excision waste material.The cleaning mould is also coated the required lubricating oil of processing next time, and closed die is finished time processing.
Claims (3)
1. the extrusion die of an equal-passage spiral cavity for molding magnesium alloy square rods, its composition comprises: fixed head, it is characterized in that: described fixed head is connected and fixed counterdie, described counterdie and patrix are fixed with alignment pin and are linked together by bolt, the curved surface of described upper die and lower die opposing end surface forms passage, and described passage stage casing is for revolving the shape passage.
2. the extrusion die of equal-passage spiral cavity for molding magnesium alloy square rods according to claim 1 is characterized in that: described passage is connected passage by the straight channel at two ends by fillet and connects the described shape passage that revolves and form.
3. the extrusion die of equal-passage spiral cavity for molding magnesium alloy square rods according to claim 1 and 2, it is characterized in that: described passage is 90 ° of passages of dextrorotation or left-handed 90 ° of passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200989028U CN201366449Y (en) | 2009-01-13 | 2009-01-13 | Extrusion die with equal-passage spiral cavities for molding magnesium alloy square rods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200989028U CN201366449Y (en) | 2009-01-13 | 2009-01-13 | Extrusion die with equal-passage spiral cavities for molding magnesium alloy square rods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201366449Y true CN201366449Y (en) | 2009-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200989028U Expired - Lifetime CN201366449Y (en) | 2009-01-13 | 2009-01-13 | Extrusion die with equal-passage spiral cavities for molding magnesium alloy square rods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201366449Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744282A (en) * | 2012-07-19 | 2012-10-24 | 西北工业大学 | Die for spiral divided-flow extrusion of magnesium alloy bar |
| CN108405647A (en) * | 2018-03-14 | 2018-08-17 | 哈尔滨理工大学 | A kind of circular bar is crowded to turn round shaping dies and its crowded torsion method |
-
2009
- 2009-01-13 CN CNU2009200989028U patent/CN201366449Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744282A (en) * | 2012-07-19 | 2012-10-24 | 西北工业大学 | Die for spiral divided-flow extrusion of magnesium alloy bar |
| CN108405647A (en) * | 2018-03-14 | 2018-08-17 | 哈尔滨理工大学 | A kind of circular bar is crowded to turn round shaping dies and its crowded torsion method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091223 Effective date of abandoning: 20090113 |