CN211938451U - Labor-saving composite extrusion forming die for metal pipes - Google Patents
Labor-saving composite extrusion forming die for metal pipes Download PDFInfo
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- CN211938451U CN211938451U CN201922448778.XU CN201922448778U CN211938451U CN 211938451 U CN211938451 U CN 211938451U CN 201922448778 U CN201922448778 U CN 201922448778U CN 211938451 U CN211938451 U CN 211938451U
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Abstract
The utility model particularly relates to a laborsaving compound extrusion forming die of metal tubular product belongs to metal-working forming technical field. The extrusion forming die comprises an upper punching die, a lower punching die, an extrusion cylinder, a heating body, a discharging plate, a connecting rod, an upper punching die fixing plate and a lower punching die fixing plate, wherein the upper punching die is a hollow die and is fixed on the upper punching die fixing plate; the lower punching die is a convex die and is arranged in the extrusion container, the heating body is arranged around the extrusion container, and the lower punching die and the extrusion container are both fixed on the lower punching die fixing plate; the connecting rod sets up between die and recipient under, and the stripper plate sets up on the connecting rod. This novel extrusion forming die takes shape laborsavingly, energy-conservation, product quality are high, can effectively solve traditional technology shaping processing tubular product and have that the tissue is thick, the homogeneity is poor, a great deal of problem such as forming force is big.
Description
Technical Field
The utility model particularly relates to a laborsaving compound extrusion forming die of metal tubular product mainly is narrow to hot-working temperature range, deformation resistance is big, the difficult deformable materials such as nickel base alloy, copper-nickel alloy, tantalum alloy, niobium alloy, titanium alloy, zirconium alloy, tungsten alloy, molybdenum alloy, high-strength steel, magnesium alloy and metal base combined material of hot-working difficulty, belongs to metal working shaping technical field.
Background
The material which is difficult to deform, such as nickel-based alloy, copper-nickel alloy, titanium alloy, tantalum alloy, niobium alloy, zirconium alloy, tungsten alloy, molybdenum alloy, high-strength steel, magnesium alloy, metal-based composite material and the like, has excellent and unique service performance, is widely applied in the technical fields of military industry such as aviation, aerospace, weapons, ships, nuclear industry and the like, and is a material basis of modern weaponry. However, the materials have low plasticity, high deformation resistance, narrow hot working temperature range and difficult control of structure uniformity, and the tubes made of the materials difficult to deform, such as nickel-based alloy, copper-nickel alloy, titanium alloy, tantalum alloy, niobium alloy, zirconium alloy, tungsten alloy, molybdenum alloy and the like, have good mechanical property and corrosion property, and are widely applied to military and civil products in various fields, such as aviation, spaceflight, weapons, ships, nuclear industry and the like. In addition, the preparation of the large-diameter pipe is the most critical and important process in the preparation and processing of the large-diameter thin-wall pipe.
The extrusion process is a powerful means for preparing the pipe, the traditional backward extrusion process is difficult to prepare the pipe with longer length, the traditional cup-cup compound extrusion process can prepare the pipe with longer length, and the traditional backward extrusion and cup-cup compound extrusion process is quite difficult to prepare the pipe with difficult deformation material due to the large deformation resistance and the large forming pressure of the difficult deformation material.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides a labor-saving composite extrusion forming die for metal pipes, which organically combines the reduction of the applied load area and the reduction of the deformation resistance, adopts a hollow cylindrical upper punching die and a hollow blank to change the applied load area from the area of a circle to the area of a circular ring, and greatly reduces the applied load area; the forming die is heated by the heating body, so that the temperature of the die is consistent with or close to that of the blank, the temperature of the blank is prevented from being reduced by a die cooling effect, an appropriate extrusion process is selected, the material has extremely low rheological stress, the deformation resistance is greatly reduced, the load is remarkably reduced, the forming is labor-saving, and the energy is saved. The utility model discloses when taking shape, the material deformation temperature is even, and it is even to warp, and the tubular product tissue of preparation is tiny even.
The technical scheme of the utility model as follows:
a labor-saving composite extrusion forming die for metal pipes comprises an upper stamping die, a lower stamping die, an extrusion cylinder, a heating body, a discharging plate, a connecting rod, an upper stamping die fixing plate, a lower stamping die fixing plate and the like, wherein the upper stamping die is a hollow die and is fixed on the upper stamping die fixing plate; the lower punching die is a convex die and is arranged in the extrusion container, the heating body is arranged around the extrusion container, and the lower punching die and the extrusion container are both fixed on a lower punching die fixing plate; the connecting rod is arranged between the lower punching die and the extrusion container, and the discharging plate is arranged on the connecting rod.
The upper punching die is in a hollow cylinder shape, and the ratio of the inner diameter to the outer diameter of the upper punching die is 0.3-0.5.
The diameter of the lower punching die is the same as the outer diameter of the upper punching die, and the diameter of the protruding part of the lower punching die is 0.5-5 mm smaller than the inner diameter of the upper punching die. The lower punch die is cylindrical in main body shape, and the protruding parts are coaxial small cylinders.
The adopted blank is a hollow cylindrical blank, and the outer diameter of the upper punch and the diameter of the lower punch are larger than the inner diameter of the hollow cylindrical blank. The upper punching die and the hollow blank of the hollow cylinder are adopted, the load application area is changed from the area of a circle to the area of a circular ring, the load application area is greatly reduced, and the forming is labor-saving.
The upper punch fixing plate is provided with a cylindrical boss, and the upper punch is fixed on the cylindrical boss. The extrusion container is provided with a concave table, and the diameter of the upper punch fixed plate boss is the same as the inner diameter of the extrusion container concave table.
The heating body is used for heating the extrusion die to a set temperature.
The method comprises the steps of heating an extrusion die to a set temperature by a heating body, placing the heated extrusion blank on a lower stamping die, enabling an upper stamping die to move downwards for composite extrusion, enabling the upper stamping die to move upwards after extrusion is finished, ejecting the extruded pipe from the lower stamping die by a connecting rod and a discharge plate, and machining the pipe to obtain a finished pipe.
When the extrusion temperature is lower than 1050 ℃, the temperature of the extrusion die is consistent with that of the blank; when the extrusion temperature is higher than 1050 ℃, the temperature of the extrusion die is 20-350 ℃ lower than that of the blank. The blank temperature is consistent with or close to the mold temperature, the material deformation temperature is uniform, the deformation is uniform, and the prepared pipe has fine and uniform tissues. The deformation temperature of the blank is high, the die cooling effect is almost not generated, the deformation resistance of the material is small, the applied load area is reduced, the deformation resistance is reduced, and the extrusion force is greatly reduced.
The utility model discloses an advantage and effect do: the upper punching die and the hollow blank of the hollow cylinder are adopted, the area of the applied load is changed from the area of a circle to the area of a circular ring, and the area of the applied load is greatly reduced; the blank temperature is consistent with or close to the die temperature, the material deformation temperature is uniform, the deformation is uniform, the prepared pipe is fine and uniform in structure, a proper extrusion process is selected, the material is guaranteed to deform at a low strain rate, the material has extremely low rheological stress under the deformation conditions of high temperature and low strain rate, the deformation resistance is greatly reduced, the applied load area is reduced, the deformation resistance is reduced organically, the load is reduced obviously, the forming labor is saved, and the energy is saved. The prepared large-diameter pipe has fine and uniform tissue and high product quality.
The utility model discloses mainly to the difficult deformation material that deformation resistance is big, hot-working temperature range is narrow, the hot working is difficult, does to be applicable to yielding alloy, need not the heating, adopts hollow die, through reducing the mode of applying load area, reduces the extrusion force. This novel extrusion forming die takes shape laborsavingly, energy-conservation, product quality are high, can effectively solve traditional technology shaping processing tubular product and have that the tissue is thick, the homogeneity is poor, a great deal of problem such as forming force is big.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the upper die.
Fig. 3 is a schematic view of the lower die.
Fig. 4 is a schematic view of an extrusion billet.
FIG. 5 is a schematic view of an extruded tube.
FIG. 6 is a schematic view of a machined tube.
Description of the main reference numerals:
1 upper punching die fixing plate 2 upper punching die
3 extruding pipe material 4 extruding cylinder
5 heating body 6 stripper
7 connecting rod 8 lower punching die fixing plate
9 lower punching die
Detailed Description
In order to further explain the labor-saving composite extrusion forming die for metal pipes, the present invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the structure of the labor-saving compound extrusion forming die for metal pipes of the present invention is schematically illustrated, and the labor-saving compound extrusion forming die for metal pipes of the present invention mainly comprises an upper punch die 2, a lower punch die 9, an extrusion cylinder 4, a heating body 5, a discharging plate 6, a connecting rod 7, an upper punch die fixing plate 1, a lower punch die fixing plate 8, etc., wherein the upper punch die 2 is a hollow die and is fixed on the upper punch die fixing plate 1; the lower punching die 9 is a convex die, the lower punching die 9 is arranged in the extrusion container 4, the heating body 5 is arranged at the periphery of the extrusion container 4, and the lower punching die 9 and the extrusion container 4 are both fixed on the lower punching die fixing plate 8; a connecting rod 7 is provided between the lower die 9 and the container 4, and a stripper plate 6 is placed on the connecting rod 7.
As shown in FIG. 2, the upper punch 2 is in the shape of a hollow cylinder, and the ratio of the inner diameter to the outer diameter of the upper punch 2 is 0.3 to 0.5. As shown in figure 3, the lower punch 9 is composed of a cylinder with a larger diameter at the lower part and a cylindrical boss with a smaller diameter and a coaxial upper part, the diameter of the lower punch 9 is consistent with the outer diameter of the upper punch 2, and the diameter of the protruding part of the lower punch 9 is 0.5-5 mm smaller than the inner diameter of the upper punch 2. As shown in fig. 4, the blank used is a hollow cylindrical blank, and the outer diameter of the upper die 2 and the diameter of the lower die 9 are larger than the inner diameter of the hollow cylindrical blank. The upper punching die and the hollow blank of the hollow cylinder are adopted, the load application area is changed from the area of a circle to the area of a circular ring, the load application area is greatly reduced, and the forming is labor-saving.
As shown in fig. 1, the upper die fixing plate 1 is provided with a cylindrical boss on which the upper die 2 is fixed. The extrusion cylinder 4 is provided with a concave table, and the diameter of the boss of the upper punch fixing plate 1 is the same as the inner diameter of the concave table of the extrusion cylinder 4. The connecting rod 7 and the stripper plate 6 are used for ejecting the extruded pipe 3 from the lower die 9, and the heating body 5 is used for heating the extrusion die to a set temperature.
During working, the heating body 5 is adopted to heat the extrusion die to a set temperature, the heated extrusion blank is placed on the lower punch die 9, the upper punch die 2 moves downwards to carry out composite extrusion, after the extrusion is finished, the upper punch die 2 moves upwards, the extrusion pipe is ejected out of the lower punch die 9 by the connecting rod 7 and the stripper plate 6, the obtained extrusion pipe 3 is shown in figure 5, then the pipe is machined, and the redundant part in the middle is removed, so that the machined finished pipe shown in figure 6 is obtained.
The utility model discloses a laborsaving co-extrusion forming die of metal tubular product mainly is to the difficult deformation materials such as nickel base alloy, copper-nickel alloy, titanium alloy, tantalum alloy, niobium alloy, zirconium alloy, tungsten alloy, molybdenum alloy that resistance to deformation is big, hot working temperature range is narrow, the hot working difficulty. The used blank is a hollow blank, a hollow cylindrical upper punch die and the hollow blank are adopted, the load application area is changed from the area of a circle to the area of a circular ring, the load application area is greatly reduced, the material deformation temperature is high, and when the extrusion temperature is lower than 1050 ℃, the temperature of an extrusion die is consistent with that of the blank; when the extrusion temperature is higher than 1050 ℃, the temperature of an extrusion die is 20-350 ℃ lower than that of a blank, the die cooling effect is almost avoided, the deformation resistance is small, and the forming is labor-saving; the material has uniform deformation temperature and uniform deformation, and the prepared pipe has fine and uniform tissue.
Claims (7)
1. The utility model provides a laborsaving compound extrusion forming die of tubular metal resonator which characterized in that: the stamping die comprises an upper stamping die, a lower stamping die, an extrusion cylinder, a heating body, a discharging plate, a connecting rod, an upper stamping die fixing plate and a lower stamping die fixing plate, wherein the upper stamping die is a hollow die and is fixed on the upper stamping die fixing plate; the lower punching die is a convex die and is arranged in the extrusion container, the heating body is arranged around the extrusion container, and the lower punching die and the extrusion container are both fixed on a lower punching die fixing plate; the connecting rod is arranged between the lower punching die and the extrusion container, and the discharging plate is arranged on the connecting rod.
2. The labor-saving compound extrusion forming die for metal pipes as claimed in claim 1, wherein: the upper punching die is in a hollow cylinder shape, and the ratio of the inner diameter to the outer diameter of the upper punching die is 0.3-0.5.
3. The labor-saving compound extrusion forming die for metal pipes as claimed in claim 1, wherein: the diameter of the lower punching die is the same as the outer diameter of the upper punching die, and the diameter of the protruding part of the lower punching die is 0.5-5 mm smaller than the inner diameter of the upper punching die.
4. The labor-saving compound extrusion forming die for metal pipes as claimed in claim 3, wherein: the lower punch die is cylindrical in main body shape, and the protruding parts are coaxial small cylinders.
5. The labor-saving compound extrusion forming die for metal pipes as claimed in claim 1, wherein: the adopted blank is a hollow cylindrical blank, and the outer diameter of the upper punch and the diameter of the lower part of the lower punch are larger than the inner diameter of the hollow cylindrical blank.
6. The labor-saving compound extrusion forming die for metal pipes as claimed in claim 1, wherein: the upper punch fixing plate is provided with a cylindrical boss, and the upper punch is fixed on the cylindrical boss.
7. The labor-saving compound extrusion forming die for metal pipes as claimed in claim 5, wherein: the extrusion container is provided with a concave platform, and the diameter of the upper punch fixed plate boss is the same as the inner diameter of the extrusion container concave platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922448778.XU CN211938451U (en) | 2019-12-30 | 2019-12-30 | Labor-saving composite extrusion forming die for metal pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922448778.XU CN211938451U (en) | 2019-12-30 | 2019-12-30 | Labor-saving composite extrusion forming die for metal pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211938451U true CN211938451U (en) | 2020-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922448778.XU Active CN211938451U (en) | 2019-12-30 | 2019-12-30 | Labor-saving composite extrusion forming die for metal pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211938451U (en) |
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2019
- 2019-12-30 CN CN201922448778.XU patent/CN211938451U/en active Active
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