CN204220659U - A kind of hot-extrusion mold of rods and bars of aluminium alloy - Google Patents
A kind of hot-extrusion mold of rods and bars of aluminium alloy Download PDFInfo
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- CN204220659U CN204220659U CN201420643671.5U CN201420643671U CN204220659U CN 204220659 U CN204220659 U CN 204220659U CN 201420643671 U CN201420643671 U CN 201420643671U CN 204220659 U CN204220659 U CN 204220659U
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- aluminium alloy
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Abstract
The utility model relates to a kind of hot-extrusion mold of rods and bars of aluminium alloy, belongs to aluminium alloy hot-extrusion die technical field.It comprises mould, and mould has charging aperture, is also provided with work strip; Described charging aperture becomes the circular shape with chamfering.The chamfer dimesion of described charging aperture is 15 ~ 60mm.The utility model makes aluminium alloy reduce in extrusion process and the strong friction of die face, allow its flowing velocity evenly, decrease the distortion of lattice in compressional deformation process.By changing die feeding structure, the product squeezed out can eliminate coarse grain ring substantially.
Description
Technical field
The utility model relates to a kind of hot-extrusion mold of rods and bars of aluminium alloy, and a kind of charging aperture is the hot-extrusion mold of arc-shaped specifically, belongs to aluminium alloy hot-extrusion die technical field.
Background technology
Traditional aluminium alloy bars material hot-extrusion mold charging aperture is in perpendicular shape, and when hot extrusion, metal flow exists delay dead band, and the middle detrusion of extrusion process material is large, easily forms coarse grain ring at product surface.
Coarse grain ring is a kind of tissue defects of extruded product, and specifically refer to the ring-type coarse grain region formed on extruded product periphery, the crystallite dimension in coarse grain ring can exceed 10 ~ 100 times of initial grain size.It can cause Mechanical Properties of Products to reduce, and becomes coarse, occur the problems such as piebald aberration in anodic oxidation rear surface on the stretched man-hour surface of adding of goods.
When coarse grain ring formation basic theory is extruding, metal and container wall severe friction, stand continuous detrusion, extensional, and Severe distortion occurs lattice tissue, product surface die break, and these distortion, broken lattice form recrystallization and grow up after high temperature.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art part, improves from mould structure aspect, decreases the generation of coarse grain ring, is modified to curved circular slides into material by original right angle end face charging.
According to the technical scheme that the utility model provides, a kind of hot-extrusion mold of rods and bars of aluminium alloy, comprises mould, and be provided with discharging opening in the middle of mould, inside is provided with charging aperture; Work strip is connected to mould inside; Described charging aperture becomes the circular shape with chamfering.
The chamfer dimesion of described charging aperture is 15 ~ 60mm.The chamfer dimesion of described charging aperture is 15 ~ 60mm.
The beneficial effects of the utility model: the utility model makes aluminium alloy reduce in extrusion process and the strong friction of die face, allow its flowing velocity evenly, decrease the distortion of lattice in compressional deformation process.By changing die feeding structure, the product squeezed out can eliminate coarse grain ring substantially.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model A-A cross-sectional view.
Description of reference numerals: 1, mould; 2, charging aperture; 3, work strip; 4, discharging opening; 5, die cavity.
Detailed description of the invention
As shown in Figure 1-2, a kind of hot-extrusion mold of rods and bars of aluminium alloy, comprises mould 1, and be provided with discharging opening 4 in the middle of mould 1, inside is provided with charging aperture 2; It is inner that work strip 3 is connected to mould 1; Described charging aperture 2 one-tenth is with the circular shape of chamfering.The chamfer dimesion of described charging aperture 2 is 15 ~ 60mm.
During utility model works, melt adds in die cavity 5 from charging aperture 2, then by discharging opening 4 extrusion molding discharging.Now, because charging aperture 2 is with the circular shape of chamfering, can make aluminium alloy in extrusion process, reduce the strong friction with die face, the product squeezed out can eliminate coarse grain ring substantially.
Claims (2)
1. a hot-extrusion mold for rods and bars of aluminium alloy, is characterized in that: comprise mould (1), and be provided with discharging opening (4) in the middle of mould (1), inside is provided with charging aperture (2); It is inner that work strip (3) is connected to mould (1); Described charging aperture (2) becomes the circular shape with chamfering.
2. the hot-extrusion mold of rods and bars of aluminium alloy as claimed in claim 1, is characterized in that: the chamfer dimesion of described charging aperture (2) is 15 ~ 60mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420643671.5U CN204220659U (en) | 2014-10-31 | 2014-10-31 | A kind of hot-extrusion mold of rods and bars of aluminium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420643671.5U CN204220659U (en) | 2014-10-31 | 2014-10-31 | A kind of hot-extrusion mold of rods and bars of aluminium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204220659U true CN204220659U (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420643671.5U Active CN204220659U (en) | 2014-10-31 | 2014-10-31 | A kind of hot-extrusion mold of rods and bars of aluminium alloy |
Country Status (1)
| Country | Link |
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| CN (1) | CN204220659U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923580A (en) * | 2015-06-23 | 2015-09-23 | 江苏五洲电磁线有限公司 | Die for copper wire extruding machine |
| CN106984661A (en) * | 2017-06-08 | 2017-07-28 | 太原钢铁(集团)有限公司 | Nickel-base alloy bar hot extrusion technique |
| CN107737814A (en) * | 2017-09-27 | 2018-02-27 | 辽宁忠旺集团有限公司 | A kind of automobile engine aluminium alloy post production technology |
| CN108746441A (en) * | 2018-05-31 | 2018-11-06 | 河北伦柯贸易有限公司 | A kind of Ribbed Bar end thread processing technology |
| CN111872687A (en) * | 2020-06-11 | 2020-11-03 | 东莞长盈精密技术有限公司 | Forging and pressing pretreatment method and electronic product shell forming method |
| WO2023103921A1 (en) * | 2021-12-10 | 2023-06-15 | 广东坚美铝型材厂（集团）有限公司 | Method for repairing solid bar extrusion die |
-
2014
- 2014-10-31 CN CN201420643671.5U patent/CN204220659U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923580A (en) * | 2015-06-23 | 2015-09-23 | 江苏五洲电磁线有限公司 | Die for copper wire extruding machine |
| CN106984661A (en) * | 2017-06-08 | 2017-07-28 | 太原钢铁(集团)有限公司 | Nickel-base alloy bar hot extrusion technique |
| CN106984661B (en) * | 2017-06-08 | 2018-12-25 | 太原钢铁(集团)有限公司 | Nickel-base alloy bar hot extrusion technique |
| CN107737814A (en) * | 2017-09-27 | 2018-02-27 | 辽宁忠旺集团有限公司 | A kind of automobile engine aluminium alloy post production technology |
| CN108746441A (en) * | 2018-05-31 | 2018-11-06 | 河北伦柯贸易有限公司 | A kind of Ribbed Bar end thread processing technology |
| CN111872687A (en) * | 2020-06-11 | 2020-11-03 | 东莞长盈精密技术有限公司 | Forging and pressing pretreatment method and electronic product shell forming method |
| CN111872687B (en) * | 2020-06-11 | 2021-11-16 | 东莞长盈精密技术有限公司 | Forging and pressing pretreatment method and electronic product shell forming method |
| WO2023103921A1 (en) * | 2021-12-10 | 2023-06-15 | 广东坚美铝型材厂（集团）有限公司 | Method for repairing solid bar extrusion die |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |