CN206168961U - Dark cylinder part hot extrusion die of aluminum alloy thin wall - Google Patents
Dark cylinder part hot extrusion die of aluminum alloy thin wall Download PDFInfo
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- CN206168961U CN206168961U CN201621216107.0U CN201621216107U CN206168961U CN 206168961 U CN206168961 U CN 206168961U CN 201621216107 U CN201621216107 U CN 201621216107U CN 206168961 U CN206168961 U CN 206168961U
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Abstract
The utility model discloses a dark cylinder part hot extrusion die of aluminum alloy thin wall, wherein the mould including lower die carrier, down the mold core, go up mould, spring guide arm, take off the flitch, ejector pin, guide arm, go up the die carrier, go up the mold core. To go up mould and lower mold core through lathe blank pressing jar and compress tightly on die carrier down, go up the mold core through last die carrier, take off the central hole of flitch, just to the centre bore of last mould. Technology does: heat the blank to 430~470 DEG C heat preservation 24h, then cooling, the blank heats to 380~500 DEG C of 4~8h that keep warm, it heats to equal temperature and keeps warm to go up mold core and last mould, go up the mold core rebound, stop to breaking away from the mould completely, the blank is come out of the stove, puts into inside the mould, go up the mold core downstream, carry out the blank extrusion, go up the mold core upward movement, the product is carry over out of from the die cavity of last mould, accomplishes breaking away from of product and mold core under the effect of taking off the flitch. The utility model discloses a dark cylinder part's of aluminum alloy cartridge case thin wall hot extrusion molding has guaranteed wall thickness uniformity.
Description
Technical field
The present invention relates to the heat forming technology of aluminium alloy blank, particularly a kind of aluminium alloy thin-walled deep barrier part hot extruding die
Tool.
Background technology
Cartridge The cartridge is the important component part of automatic weapon ammunition.Based on the operating environment requirements of cartridge The cartridge, cartridge case
Cartridge case material is it is necessary to have high intensity, toughness and good ductility.Used as cartridge case material, aluminium alloy has following excellent
Gesture：
1) bauxite resource enriches, low price；
2) aluminum density is low, cartridge case light weight, and aluminium cartridge case quality is the 30% of brass shell, the 36% of steel cartridge case；
Although extra super duralumin alloy material intensity is high, room temperature elongation percentage is low by about 10%, far below S20A steel 28%
Elongation percentage.If continuing to use existing cartridge case cold-extrusion technology flow process, exist and draw long number of times and annealing times are more, processing crackle easily occur,
The low problem of yields.
The blank of aluminium alloy cartridge The cartridge is produced using thermoforming process, the molding number of times of cartridge The cartridge can be reduced.But
Be the hot extrusion blank of aluminium alloy cartridge The cartridge because wall thickness is relatively thin, radius-thickness ratio is larger and cartridge The cartridge hot extrusion billet length compared with
Greatly, thus Wall-Thickness Difference is difficult to control in hot extrusion process.
The content of the invention
It is an object of the invention to provide the aluminium alloy that a kind of hot extrusion molding product evenness of wall thickness is high, dimensional accuracy is high
Thin-walled depth barrier part hot-extrusion mold.
The technical solution for realizing the object of the invention is：A kind of aluminium alloy thin-walled deep barrier part hot-extrusion mold, the mould
For hot extrusion molding, including lower mold holder, lower mold core, upper mould, spring guide, stripper plate, push rod, guide rod, top mold frame, upper mould
Core；The lower mold core is arranged on lower mold holder upper surface, and is fixed using fastening bolt；The pit of upper mould is arranged at the convex of lower mold core
On platform；Spring guide lower surface is fixed on lower mold holder upper surface, and spring guide upper surface is fixedly connected with stripper plate, and stripper plate exists
Being capable of free movement in the stroke of spring guide；Push rod top is fixedly connected with top mold frame, and push rod bottom is pressed in mould upper surface；
Upper mold core passes through top mold frame, the hole at stripper plate center, just to the centre bore of upper mould；Upper mold core is fixed on lathe by fixture；
Top mold frame is connected with lower mold holder by guide rod.
Further, the side wall cladding of the upper mould arranges electric heating cover, and the upper mold core in upper mould and its die cavity is by being somebody's turn to do
Electric heating cover is heated.
Further, the guide rod arranges guide pin bushing with the junction of top mold frame.
Further, the top mold frame is subject to after the flanging cylinder pressure of hydraulic press, and top mold frame will be suffered by push rod
Pressure conduction compresses in upper die and lower die core to upper die and lower die core；Upper mold core moves downward middle elder generation and contacts with stripper plate, then
Move downwardly together with stripper plate.
Compared with prior art, its remarkable advantage is the present invention：(1) aluminium alloy thin-walled deep cylinder is processed using backward extrusion technology
Part, by homogenization heat treatment, materials microstructure is more uniform, and the hardness of blank is low, is considering the premise of working (machining) efficiency
Under, reduce further material crush resistance；(2) mould is fixed with mould bases, and positioning precision is high, and hot extrusion molding product wall thickness is equal
Even property is high, dimensional accuracy is high, and mechanical performance meets the precision that cartridge case is processed further；(3) improve by the technique of hot extrusion
Aluminium alloy processing characteristics, in the case where structural integrity is ensured, improves the working (machining) efficiency of aluminium alloy cartridge case.
Description of the drawings
Fig. 1 is the structural representation for inventing aluminium alloy thin-walled deep barrier part hot-extrusion mold.
Specific embodiment
With reference to Fig. 1, the aluminium alloy thin-walled deep barrier part hot-extrusion mold of the present invention, the mould is used for hot extrusion molding, including under
Mould bases 1, lower mold core 2, upper mould 4, spring guide 5, stripper plate 6, push rod 7, guide rod 8, top mold frame 9, upper mold core 11；The lower mold core
2 are arranged on the upper surface of lower mold holder 1, and are fixed using fastening bolt；The pit of upper mould 4 is arranged on the boss of lower mold core 2；Spring
The lower surface of guide rod 5 is fixed on the upper surface of lower mold holder 1, and the upper surface of spring guide 5 is fixedly connected with stripper plate 6, and stripper plate 6 is in spring
Being capable of free movement in the stroke of guide rod 5；The top of push rod 7 is fixedly connected with top mold frame 9, and the bottom of push rod 7 is pressed in the upper table of mould 4
Face；Upper mold core 11 passes through top mold frame 9, the hole at the center of stripper plate 6, just to the centre bore of upper mould 4；Upper mold core 11 is fixed by fixture
On lathe；Top mold frame 9 is connected with lower mold holder 1 by guide rod 8.
Further, the side wall cladding of the upper mould 4 arranges electric heating cover 3, and the upper mold core 11 in upper mould 4 and its die cavity is led to
Cross the electric heating cover 3 to heat.
Further, the guide rod 8 arranges guide pin bushing 10 with the junction of top mold frame 9.
Further, the top mold frame 9 is subject to after the flanging cylinder pressure of hydraulic press, and top mold frame 9 will be suffered by push rod 7
Pressure conduction to upper mould 4 and lower mold core 2, upper mould 4 and lower mold core 2 are compressed；Upper mold core 11 moves downward middle elder generation and stripper plate 6
Contact, then moves downwardly together with stripper plate 6.
Aluminium alloy thin-walled deep barrier part hot extrusion technique of the present invention based on the aluminium alloy thin-walled deep barrier part hot-extrusion mold,
Step is as follows：
Step one：Rods and bars of aluminium alloy blanking；
Step 2：Blank homogenization heat treatment：Holding furnace is heated to into 430~470 DEG C, blank is put in stove and is incubated 24h,
Then cool down；
Step 3：Blank is preheated, and blank surface is applied and lubricant and is incubated by holding furnace after being heated to 380~500 DEG C；
Step 4：Mould is heated, and press flanging cylinder is descending, compresses top mold frame 9, the outer surface of upper mold core 11 apply lubricant, on
The inner chamber of mould 4 applies lubricant, and upper mold core 11 and upper mould 4 are heated to the temperature equal with blank described in step 3 and are incubated 4~8h；
Step 5：Blank extruding is carried out using hot-extrusion mold, compressing product is obtained, it is specific as follows：
A () upper mold core 11 is moved up, stop to upper mould 4 is completely disengaged from；
B () blank is come out of the stove, be put into the inside of mould 4；
C () upper mold core 11 is moved downward, carry out blank extruding；
D () upper mold core 11 is moved upwards, product is taken out of from the die cavity of upper mould 4, and stripper plate 6 is under the elastic force effect of spring
Move upwardly together with upper mold core 11；
E () stripper plate 6 is moved to after peak, the stop motion under the pulling force effect of spring guide 5, and upper mold core 11 is in machine
Continue to move under the drive of bed, product is peeled off from upper mold core 11.
Preferably, holding furnace described in step 2 is heated to 450 DEG C, and blank is put in stove and is incubated 12h.
Preferably, upper mold core 11 described in step 4 and upper mould 4 are heated to 450 DEG C equal of temperature of blank described in step 3 simultaneously
Insulation 4h.
Below in conjunction with the accompanying drawings and specific embodiment is described in further details to the present invention.
Embodiment 1
A kind of thin-walled depth barrier part extrusion process, its step is as follows：
Step one：Rods and bars of aluminium alloy blanking；
Step 2：Blank homogenization heat treatment：Holding furnace is heated to into 430 DEG C, blank is put in stove and is incubated 24h, then
Furnace cooling (water quenching or furnace cooling)；
Step 3：Blank is preheated, and blank surface is applied and lubricant and is incubated by holding furnace after being heated to 380 DEG C；
Step 4：Mould is heated, and press flanging cylinder is descending, compresses top mold frame 9, the outer surface of upper mold core 11 apply lubricant, on
The inner chamber of mould 4 applies lubricant, and upper mold core 11 and upper mould 4 are heated to step 3 with 380 DEG C of equitemperature and are incubated 4h；
Step 5：It is compressing；
A () upper mold core 11 is moved up, stop to upper mould 4 is completely disengaged from；
B () blank is come out of the stove, be put into the inside of mould 4；
C () upper mold core 11 is moved downward, carry out blank extruding；
D () upper mold core 11 is moved upwards, product is taken out of from the die cavity of upper mould 4, and stripper plate 6 is under the elastic force effect of spring
Move upwardly together with upper mold core；
E () stripper plate 6 is moved to after peak, the stop motion under the pulling force effect of spring guide 5, and upper mold core is in lathe
Drive under continue to move, product peels off from upper mold core.
Embodiment 2
A kind of thin-walled depth barrier part extrusion process, its step is as follows：
Step one：Rods and bars of aluminium alloy blanking；
Step 2：Blank homogenization heat treatment：Holding furnace is heated to into 450 DEG C, blank is put in stove and is incubated 24h, then
Water quenching；
Step 3：Blank is preheated, and blank surface is applied and lubricant and is incubated by holding furnace after being heated to 450 DEG C；
Step 4：Mould is heated, and press flanging cylinder is descending, compresses top mold frame 9, the outer surface of upper mold core 11 apply lubricant, on
The inner chamber of mould 4 applies lubricant, and upper mold core 11 and upper mould 4 are heated to step 3 with 450 DEG C of equitemperature and are incubated 4h；
Step 5：It is compressing；
A () upper mold core 11 is moved up, stop to upper mould 4 is completely disengaged from；
B () blank is come out of the stove, be put into the inside of mould 4；
C () upper mold core 11 is moved downward, carry out blank extruding；
D () upper mold core 11 is moved upwards, product is taken out of from the die cavity of upper mould 4, and stripper plate 6 is under the elastic force effect of spring
Move upwardly together with upper mold core；
E () stripper plate 6 is moved to after peak, the stop motion under the pulling force effect of spring guide 5, and upper mold core is in lathe
Drive under continue to move, product peels off from upper mold core.
Embodiment 3
A kind of thin-walled depth barrier part extrusion process, its step is as follows：
Step one：Rods and bars of aluminium alloy blanking；
Step 2：Blank homogenization heat treatment：Holding furnace is heated to into 450 DEG C, blank is put in stove and is incubated 24h, then
Furnace cooling；
Step 3：Blank is preheated, and blank surface is applied and lubricant and is incubated by holding furnace after being heated to 450 DEG C；
Step 4：Mould is heated, and press flanging cylinder is descending, compresses top mold frame 9, the outer surface of upper mold core 11 apply lubricant, on
The inner chamber of mould 4 applies lubricant, and upper mold core 11 and upper mould 4 are heated to step 3 with 450 DEG C of equitemperature and are incubated 6h；
Step 5：It is compressing；
A () upper mold core 11 is moved up, stop to upper mould 4 is completely disengaged from；
B () blank is come out of the stove, be put into the inside of mould 4；
C () upper mold core 11 is moved downward, carry out blank extruding；
D () upper mold core 11 is moved upwards, product is taken out of from the die cavity of upper mould 4, and stripper plate 6 is under the elastic force effect of spring
Move upwardly together with upper mold core；
E () stripper plate 6 is moved to after peak, the stop motion under the pulling force effect of spring guide 5, and upper mold core is in lathe
Drive under continue to move, product peels off from upper mold core.
Embodiment 4
A kind of thin-walled depth barrier part extrusion process, its step is as follows：
Step one：Rods and bars of aluminium alloy blanking；
Step 2：Blank homogenization heat treatment：Holding furnace is heated to into 470 DEG C, blank is put in stove and is incubated 24h, then
Water quenching；
Step 3：Blank is preheated, and blank surface is applied and lubricant and is incubated by holding furnace after being heated to 500 DEG C；
Step 4：Mould is heated, and press flanging cylinder is descending, compresses top mold frame 9, the outer surface of upper mold core 11 apply lubricant, on
The inner chamber of mould 4 applies lubricant, and upper mold core 11 and upper mould 4 are heated to step 3 with 500 DEG C of equitemperature and are incubated 8h；
Step 5：It is compressing；
A () upper mold core 11 is moved up, stop to upper mould 4 is completely disengaged from；
B () blank is come out of the stove, be put into the inside of mould 4；
C () upper mold core 11 is moved downward, carry out blank extruding；
D () upper mold core 11 is moved upwards, product is taken out of from the die cavity of upper mould 4, and stripper plate 6 is under the elastic force effect of spring
Move upwardly together with upper mold core；
E () stripper plate 6 is moved to after peak, the stop motion under the pulling force effect of spring guide 5, and upper mold core is in lathe
Drive under continue to move, product peels off from upper mold core.
To sum up case study on implementation, the Homogenization Treatments of step 2, water quenching material has maximum consolidating after 450 DEG C of homogenization 24h
Molten invigoration effect；In step 3,4h rear molds are incubated at 450 DEG C and have reached thermal balance；The aluminium alloy produced by the invention
Cartridge case hot extrusion blank, evenness of wall thickness is high, mechanical property is good, extruding force is moderate.
Claims (4)
1. a kind of aluminium alloy thin-walled deep barrier part hot-extrusion mold, it is characterised in that the mould is used for hot extrusion molding, including lower mould
Frame (1), lower mold core (2), upper mould (4), spring guide (5), stripper plate (6), push rod (7), guide rod (8), top mold frame (9), upper mould
Core (11)；The lower mold core (2) is fixed installed in lower mold holder (1) upper surface using fastening bolt；The pit of upper mould (4) sets
It is placed on the boss of lower mold core (2)；Spring guide (5) lower surface is fixed on lower mold holder (1) upper surface, spring guide (5) upper table
Face is fixedly connected with stripper plate (6), and stripper plate (6) being capable of free movement in the stroke of spring guide (5)；Push rod (7) top
It is fixedly connected with top mold frame (9), push rod (7) bottom is pressed in mould (4) upper surface；Upper mold core (11) is by top mold frame (9), de- material
The hole at plate (6) center, just to the centre bore of upper mould (4)；Upper mold core (11) is fixed on lathe by fixture；Top mold frame (9) with
Lower mold holder (1) is connected by guide rod (8).
2. aluminium alloy thin-walled deep barrier part hot-extrusion mold according to claim 1, it is characterised in that the upper mould (4)
Side wall cladding arranges electric heating cover (3), and the upper mold core (11) in upper mould (4) and its die cavity is by electric heating cover (3) heating.
3. aluminium alloy thin-walled deep barrier part hot-extrusion mold according to claim 1, it is characterised in that the guide rod (8) with
The junction of top mold frame (9) arranges guide pin bushing (10).
4. aluminium alloy thin-walled deep barrier part hot-extrusion mold according to claim 1, it is characterised in that the top mold frame (9)
After the flanging cylinder pressure of hydraulic press, top mold frame (9) by push rod (7) by suffered pressure conduction to upper mould (4) and under
Core rod (2), upper mould (4) and lower mold core (2) are compressed；Upper mold core (11) moves downward middle elder generation and contacts with stripper plate (6), Ran Houyu
Stripper plate (6) is moved downwardly together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621216107.0U CN206168961U (en) | 2016-11-11 | 2016-11-11 | Dark cylinder part hot extrusion die of aluminum alloy thin wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621216107.0U CN206168961U (en) | 2016-11-11 | 2016-11-11 | Dark cylinder part hot extrusion die of aluminum alloy thin wall |
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| Publication Number | Publication Date |
|---|---|
| CN206168961U true CN206168961U (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621216107.0U Active CN206168961U (en) | 2016-11-11 | 2016-11-11 | Dark cylinder part hot extrusion die of aluminum alloy thin wall |
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| CN (1) | CN206168961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106623469A (en) * | 2016-11-11 | 2017-05-10 | 南京理工大学 | Hot extrusion die and technique for thin-wall deep aluminum alloy cartridge piece |
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2016
- 2016-11-11 CN CN201621216107.0U patent/CN206168961U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106623469A (en) * | 2016-11-11 | 2017-05-10 | 南京理工大学 | Hot extrusion die and technique for thin-wall deep aluminum alloy cartridge piece |
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