CN107185986A - The extrusion die and extrusion process of lightweight aluminium alloys for automobile structural member - Google Patents
The extrusion die and extrusion process of lightweight aluminium alloys for automobile structural member Download PDFInfo
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- CN107185986A CN107185986A CN201710340612.9A CN201710340612A CN107185986A CN 107185986 A CN107185986 A CN 107185986A CN 201710340612 A CN201710340612 A CN 201710340612A CN 107185986 A CN107185986 A CN 107185986A
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- mould
- tap hole
- structural member
- extrusion die
- automobile structural
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
- B21C29/003—Cooling or heating of work
Abstract
The present invention relates to a kind of extrusion die and extrusion process of lightweight aluminium alloys for automobile structural member, extrusion die, the middle mould matched including upper mould and with upper mould, upper mould surface is provided with feed well, tap hole is provided with feed well, upper mould includes mould and two circular tongue cores in split, mould and circular tongue core are detachably connected in split, porthole extrusion die has, each tap hole even structure distribution flow design is formed, make metal flow rates and uniform flow, mitigate mould stress, it ensure that the mechanical property and outward appearance Geometrical Tolerance Principle of product, avoid and occur poor mechanical property in process of production, plane and the defect such as angle is overproof, such a construction increases the bulk strength of mould, reduce the elastic deformation of mould, also make the uniform feeding at each position of section bar reasonable simultaneously, the active force that metal stream when tap hole is fed is produced to core rod mutually obtains active balance, the elastic deformation phenomenon of core rod is greatly improved, intermediate feed hole and the charging area ratio of peripheral charging hole is set to tend to be reasonable.
Description
Technical field
The invention belongs to aluminium alloy extrusions manufacture field, more particularly, to a kind of lightweight aluminium alloys for automobile structural member
Extrusion die and extrusion process.
Background technology
In recent years, domestic aluminium extrusion industry is while high speed development, and the market share of industrial aluminum profile increases year by year,
Automobile industry just develops towards directions such as lightweight, high-speed secure, energy-conserving and environment-protective, Comfortable attractives, and various aluminium alloys are squeezed in recent years
Die mould material for energy-conserving and environment-protective, lightweight, improves in terms of stock utilization in automobile industry and plays high speed development.Market pair
The demand of complex section industrial aluminum profile is in rapid increase, and this kind of section bar is due to complicated, and production difficulty is larger, to mould
Requirement it is higher, the reasonability of mould structure design is the most critical issue in production process.
The content of the invention
In order to solve the above technical problems, the present invention provide a kind of lightweight aluminium alloys for automobile structural member extrusion die and
Extrusion process, makes it produce the aluminum alloy extrusion section bar for meeting use requirement, while can reduce aluminum alloy extrusion section bar again
Production cost purpose.
The technical solution adopted by the present invention is：The extrusion die of lightweight aluminium alloys for automobile structural member, including upper mould and
The middle mould matched with upper mould, upper mould surface, which is provided with feed well, feed well, is provided with tap hole, and upper mould includes mould in split and two
Mould and circular tongue core are detachably connected in circular tongue core, split.
It is preferred that, tap hole include the first tap hole, the second tap hole and the 3rd tap hole, the first tap hole be arranged at into
Hopper edge, the second tap hole is arranged in the middle of feed well, and the 3rd tap hole is arranged in the second tap hole.
It is preferred that, the second tap hole is recessed to form two grades of feed wells downwards, and the 3rd tap hole is arranged in two grades of feed wells.
It is preferred that, the first tap hole includes ten, and the second tap hole includes four, and each second tap hole is equipped with two
3rd tap hole.
It is preferred that, it is provided with the inside of upper mould on the inside of pin and upper screw, middle mould and is provided with groove and lower screw, pin and groove
Match somebody with somebody, upper screw is corresponding with lower screwhole position.
It is preferred that, tongue core connecting hole is provided with split on the inside of mould, circular tongue core bottom connects pin provided with tongue core, and tongue core connects
Connect hole be connected with tongue core pin pass through screw thread matching connection.
It is preferred that, bonding container is provided with middle mould.
A kind of preparation of new energy aluminium alloy extrusions is prepared by the extrusion die of lightweight aluminium alloys for automobile structural member
Method, preparation process is as follows：
Step one：The casting duricrust and surface oxide layer of aluminium alloy cast rod are removed, the aluminium alloy cast rod handled well is preheated,
Carbon dust is sprayed to preheated aluminium alloy cast rod, is then placed in extruder recipient；
Step 2：Extrusion die heating to lightweight aluminium alloys for automobile structural member；
Step 3：By pressurizing unit in recipient by aluminium alloy cast rod to lightweight aluminium alloys for automobile structural member squeeze
Compression mould is extruded, and aluminium alloy cast rod is extruded into extrusion from the extrusion die of lightweight aluminium alloys for automobile structural member；
Step 4：Extrusion head and afterbody are cut off, online air blast cooling is carried out, the extrusion after air-cooled is rectified
Directly, scale sawing is then carried out；
Step 5：Extrusion after cutting is heat-treated, new energy aluminium alloy extrusions is formed after processing.
It is preferred that, aluminium alloy cast rod preheating is ladder heating in step one, and casting rod head is heated to 470-490 DEG C, middle part
450-470 DEG C is heated to, Tail-heating temperature is 440-460 DEG C, recipient preheating temperature is mould in 450-470 DEG C, step 2
It is 450-470 DEG C to have heating-up temperature.
It is preferred that, heat treatment condition is 160-180 DEG C in step 5, and handling duration is 6-10h.
The present invention has the advantages and positive effects of：The porthole extrusion die tool that the present invention is provided, to each tap hole
Even structure distribution flow design is formed, and makes metal flow rates and uniform flow, mitigates mould stress, it is ensured that the power of product
Learn performance and outward appearance Geometrical Tolerance Principle, it is to avoid occur poor mechanical property, plane in process of production and angle is overproof etc. lacks
Fall into.
Such a construction increases the bulk strength of mould, the elastic deformation of mould is reduced, while also making each of section bar
Rationally, the active force that metal stream when tap hole is fed is produced to core rod mutually obtains active balance, mould to the uniform feeding at position
The elastic deformation phenomenon of core is greatly improved, and makes the charging area ratio of intermediate feed hole and peripheral charging hole and tends to close
Reason.
In the case where existing equipment spark-erosion machine tool can not be processed, therefore the upper mould of mould is designed to Split assembled knot
Structure, by processed between two circles in core rod less than position, split independent processing, shorten the Mold Making cycle, and drop
There is provided production efficiency for low cost.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is split upper die structure schematic diagram；
Fig. 3 is circular tongue cored structure schematic diagram；
Fig. 4 is mould and circular tongue core assembling schematic diagram in split；
Fig. 5 is upper mould outboard structure schematic diagram；
Fig. 6 is mould assembling X-Y scheme in upper mould；
Fig. 7 is profile structure schematic diagram.
In figure：
1st, upper mould 2, middle mould 3, circular tongue core
4th, mould 5, upper screw 6, tongue core connection pin in split
7th, pin 8, tongue core connecting hole 9, the first tap hole
10th, the second tap hole 11, the 3rd tap hole 12, shunting bridge
13rd, bonding container 14, core rod
Embodiment
One embodiment of the present of invention is explained below in conjunction with the accompanying drawings.
As shown in figs. 1-7, the present invention relates to a kind of extrusion die of lightweight aluminium alloys for automobile structural member and extruding work
Skill.
The extrusion die of lightweight aluminium alloys for automobile structural member, including upper mould and the middle mould that is matched with upper mould, due to mould
Tool design is complex, closer to the distance between two circular tongue cores in upper mould, can not be processed in existing equipment spark-erosion machine tool
In the case of, therefore the upper mould of mould is designed to Split assembled structure, upper mould includes mould and two circular tongue cores in split, by split
Upper mould and two circular tongue cores are split and individually processed with numerical control machining center, and mould and circular tongue core are detachably connected in split,
Tongue core connecting hole is provided with split on the inside of mould, circular tongue core bottom connects pin provided with tongue core, and tongue core connecting hole is connected with tongue core
Pin is matched by screw thread and connected, and such structure had both shortened the Mold Making cycle, cost is reduced again, improves production effect
Rate.
It is provided with the inside of upper mould on the inside of pin and upper screw, middle mould and is provided with groove and lower screw, pin and matching grooves, upper spiral shell
Hole is corresponding with lower screwhole position, and pin and groove, upper screw and lower screw include two sets, upper mould and middle mould by pin with it is recessed
Groove is positioned, and is fastenedly connected by bolt through corresponding screw, is overall structure by upper mould and middle mould assembly connection.Set in middle mould
There is bonding container, pressure soldering is carried out to the aluminium material after shunting.
Upper mould surface, which is provided with feed well, feed well, is provided with tap hole, and the surface for connecting each tap hole forms shunting bridge,
Tap hole includes the first tap hole, the second tap hole and the 3rd tap hole, and the first tap hole is arranged at charging groove edge, included altogether
10, the second tap hole is arranged in the middle of feed well, including 4,4 the second tap hole arranged opposites, and aperture is larger two-by-two,
Pass is in strip, and the second tap hole is recessed to form two grades of feed wells downwards, and the 3rd tap hole is arranged in the second tap hole two grades
In feed well, each second tap hole is equipped with 2 the 3rd tap holes, and the 3rd tap hole is located at the two ends of the second tap hole,
In mould extrusion process, equally distributed 10 the first tap holes in outside are first passed through after bar is heated, then pass through 4 second point
Discharge orifice, is fed by 8 the 3rd tap hole shuntings, squeezes out final section bar again via the second tap hole.With 4 points of conventional arrangement
Discharge orifice is compared, and adds the quantity of tap hole, on the premise of mould strength is ensured, obtains best metal flow uniformity,
The feed equilibrium problem of each core rod position is solved, makes core rod stress balance, each position flow velocity of section bar is uniform, improves mould
Stress distribution, improves die life.So that flowing metal has enough hydrostatic pressures in bonding container.Mould
The structure that feed well and two grades of feed wells are set in tool carries out staged shunting, and it is eight small that final uniform divided flows to centre are opened
Tap hole is fed, it is therefore an objective to prevent extruding force excessive, vexed car phenomenon occurs.
The course of work of mould is：Aluminium bar is heated to after about 480 DEG C, under the pressure of pressure ram, and upper mould table is contacted first
Face, by the tap holes at different levels of upper mould, aluminium bar is deformed into 14 strands of aluminium material, and 4 strands of aluminium material at center are changed into 8 strands by pressure again, so
Aluminium material is by the bonding container soldering again of middle mould afterwards, and middle mould middle part is provided with the periphery wheel of the pass profiles on pass, middle mould
The inner chamber profile for the core moulding section bar being provided with the inside of exterior feature, upper mould shunting bridge on core, upper mould, after by the empty knife of middle mould, extrusion
Final first section bar, then pressure soldering is carried out to the aluminium material after shunting through bonding container, form final extrudate.
A kind of preparation of new energy aluminium alloy extrusions is prepared by the extrusion die of lightweight aluminium alloys for automobile structural member
The above-mentioned mould of process matching, its preparation process is as follows：
Step one：The casting duricrust and surface oxide layer of aluminium alloy cast rod are removed, the aluminium alloy cast rod handled well is preheated,
Carbon dust is sprayed to preheated aluminium alloy cast rod, is then placed in extruder recipient；
Step 2：Extrusion die heating to lightweight aluminium alloys for automobile structural member；
Step 3：By pressurizing unit in recipient by aluminium alloy cast rod to lightweight aluminium alloys for automobile structural member squeeze
Compression mould is extruded, and aluminium alloy cast rod is extruded into extrusion from the extrusion die of lightweight aluminium alloys for automobile structural member；
Step 4：Extrusion head and afterbody are cut off, online air blast cooling is carried out, the extrusion after air-cooled is rectified
Directly, scale sawing is then carried out；
Step 5：Extrusion after cutting is heat-treated, new energy aluminium alloy extrusions is formed after processing.
Specific preparation process includes：
1) casting rod is surface-treated, and the casting duricrust and surface oxide layer of casting rod are removed using online peeling machine, it is to avoid influence
Section quality.
2) the pre-heat treatment is carried out to aluminium alloy cast rod, preheating method heats for ladder, and casting rod head is heated to 470-490
DEG C, middle part is heated to 450-470 DEG C, and Tail-heating temperature is 440-460 DEG C, is put it into the recipient of extruder, squeezes
450-470 DEG C of pressure cylinder temperature.
3) casting rod spray carbon dust, by after heating casting rod spray carbon dust, prevent casting rod heat after with mould adhesion.
4) mould is heated, and the even and regular speed of mould is heated by far-infrared heating stove, it is to avoid caused by quick heating
Crack of die problem, 450-470 DEG C of mould heating-up temperature.
5) online extruding：Pressurizing unit in recipient is carried out with 3~4m/min extrusion speed to mould, to aluminium alloy
Casting rod is extruded, and aluminium alloy cast rod is extruded from the mould in product, forms extrusion.
6) head of aluminium alloy and afterbody are cut off, because extruded product front end deformation extent is small, mechanical property is relatively low, system
Product tail end forms contracting tail in extruding latter stage, so needing topping and afterbody.
7) online air-cooled, extrudate carries out online air blast cooling, and section bar is gone out after nib, is pulled in and given using hauling machine
The certain tension force of extruded product simultaneously with its rate of outflow synchronizing moving, prevent section bar and go out to twist and warp the defect such as phenomenon after nib.
8) traction aligning, being fixed on seven-roll Abramsen machine for the section bar of extrusion forming is aligned, and carries out shape fine setting
It is whole.
9) scale sawing carries out scale sawing to the section bar after aligning, cuts out satisfactory profile piece.
10) Ageing Treatment, is heat-treated to the section bar after cutting, and alloy is simply obtained after extruding press quenching
Solute is Mg and Si supersaturated solid solution, and the mechanical property Ageing Treatment not up to standard that has to pass through now could be up to standard, therefore
Need to carry out artificial aging processing, 160-180 DEG C of aging temp, aging time 6-10h to section bar.
Wherein, from 36MN extruders, mold materials select H13 electroslag mould steel, and casting rod selects AL6063 aluminium alloys, directly
Footpath is 305mm, and extrusion ingot length 850mm, extrusion ratio is 19.6.
The test of tensile strength, yield strength and elongation, test result are carried out to the new energy aluminium alloy extrusions of formation
As shown in table 1.
Table 1
As testing result, it can be seen that through the inventive method prepare obtained by new energy aluminium alloy extrusions it is strong in tension
Common section bar is significantly better than that on degree, yield strength and elongation, by section bar quality made from the present invention program evenly, by force
More preferably, service life is longer for degree.
Embodiment 1
A kind of preparation of new energy aluminium alloy extrusions is prepared by the extrusion die of lightweight aluminium alloys for automobile structural member
The specific preparation process of technique includes：
1) casting rod is surface-treated, and the casting duricrust and surface oxide layer of casting rod are removed using online peeling machine, it is to avoid influence
Section quality.
2) the pre-heat treatment is carried out to aluminium alloy cast rod, preheating method heats for ladder, and casting rod head is heated to 480 DEG C, in
Portion is heated to 460 DEG C, and Tail-heating temperature is 450 DEG C, is put it into the recipient of extruder, 460 DEG C of recipient temperature.
3) casting rod spray carbon dust, by after heating casting rod spray carbon dust, prevent casting rod heat after with mould adhesion.
4) mould is heated, and the even and regular speed of mould is heated by far-infrared heating stove, it is to avoid caused by quick heating
Crack of die problem, 460 DEG C of mould heating-up temperature.
5) online extruding：Pressurizing unit in recipient is carried out with 3~4m/min extrusion speed to mould, to aluminium alloy
Casting rod is extruded, and aluminium alloy cast rod is extruded from the mould in product, forms extrusion.
6) head of aluminium alloy and afterbody are cut off, because extruded product front end deformation extent is small, mechanical property is relatively low, system
Product tail end forms contracting tail in extruding latter stage, so needing topping and afterbody.
7) online air-cooled, extrudate carries out online air blast cooling, and section bar is gone out after nib, is pulled in and given using hauling machine
The certain tension force of extruded product simultaneously with its rate of outflow synchronizing moving, prevent section bar and go out to twist and warp the defect such as phenomenon after nib.
8) traction aligning, being fixed on seven-roll Abramsen machine for the section bar of extrusion forming is aligned, and carries out shape fine setting
It is whole.
9) scale sawing carries out scale sawing to the section bar after aligning, cuts out satisfactory profile piece.
10) Ageing Treatment, is heat-treated to the section bar after cutting, and alloy is simply obtained after extruding press quenching
Solute is Mg and Si supersaturated solid solution, and the mechanical property Ageing Treatment not up to standard that has to pass through now could be up to standard, therefore
Need to carry out artificial aging processing, 170 DEG C of aging temp, aging time 8h to section bar.
The section bar prepared by above-mentioned condition is homogeneous, and angle is accurate, and surface is smooth, and mechanical property is strong, gives birth to after testing
Into section bar its tensile strength be 270MPa, yield strength is 231MPa, and elongation is 11.8%, hence it is evident that higher than common section bar,
And fabrication cycle is relatively short, productivity ratio success rate is very high, and mould core damaged condition is low, maintains the elasticity of core rod,
Substantially increase the mold use life-span.
Embodiment 2
A kind of preparation of new energy aluminium alloy extrusions is prepared by the extrusion die of lightweight aluminium alloys for automobile structural member
The specific preparation process of technique includes：
1) casting rod is surface-treated, and the casting duricrust and surface oxide layer of casting rod are removed using online peeling machine, it is to avoid influence
Section quality.
2) the pre-heat treatment is carried out to aluminium alloy cast rod, preheating method heats for ladder, and casting rod head is heated to 470 DEG C, in
Portion is heated to 450 DEG C, and Tail-heating temperature is 440 DEG C, is put it into the recipient of extruder, 450 DEG C of recipient temperature.
3) casting rod spray carbon dust, by after heating casting rod spray carbon dust, prevent casting rod heat after with mould adhesion.
4) mould is heated, and the even and regular speed of mould is heated by far-infrared heating stove, it is to avoid caused by quick heating
Crack of die problem, 450 DEG C of mould heating-up temperature.
5) online extruding：Pressurizing unit in recipient is carried out with 3~4m/min extrusion speed to mould, to aluminium alloy
Casting rod is extruded, and aluminium alloy cast rod is extruded from the mould in product, forms extrusion.
6) head of aluminium alloy and afterbody are cut off, because extruded product front end deformation extent is small, mechanical property is relatively low, system
Product tail end forms contracting tail in extruding latter stage, so needing topping and afterbody.
7) online air-cooled, extrudate carries out online air blast cooling, and section bar is gone out after nib, is pulled in and given using hauling machine
The certain tension force of extruded product simultaneously with its rate of outflow synchronizing moving, prevent section bar and go out to twist and warp the defect such as phenomenon after nib.
8) traction aligning, being fixed on seven-roll Abramsen machine for the section bar of extrusion forming is aligned, and carries out shape fine setting
It is whole.
9) scale sawing carries out scale sawing to the section bar after aligning, cuts out satisfactory profile piece.
10) Ageing Treatment, is heat-treated to the section bar after cutting, and alloy is simply obtained after extruding press quenching
Solute is Mg and Si supersaturated solid solution, and the mechanical property Ageing Treatment not up to standard that has to pass through now could be up to standard, therefore
Need to carry out artificial aging processing, 160 DEG C of aging temp, aging time 10h to section bar.
Embodiment 3
A kind of preparation of new energy aluminium alloy extrusions is prepared by the extrusion die of lightweight aluminium alloys for automobile structural member
The specific preparation process of technique includes：
1) casting rod is surface-treated, and the casting duricrust and surface oxide layer of casting rod are removed using online peeling machine, it is to avoid influence
Section quality.
2) the pre-heat treatment is carried out to aluminium alloy cast rod, preheating method heats for ladder, and casting rod head is heated to 490 DEG C, in
Portion is heated to 470 DEG C, and Tail-heating temperature is 460 DEG C, is put it into the recipient of extruder, 470 DEG C of recipient temperature.
3) casting rod spray carbon dust, by after heating casting rod spray carbon dust, prevent casting rod heat after with mould adhesion.
4) mould is heated, and the even and regular speed of mould is heated by far-infrared heating stove, it is to avoid caused by quick heating
Crack of die problem, 470 DEG C of mould heating-up temperature.
5) online extruding：Pressurizing unit in recipient is carried out with 3~4m/min extrusion speed to mould, to aluminium alloy
Casting rod is extruded, and aluminium alloy cast rod is extruded from the mould in product, forms extrusion.
6) head of aluminium alloy and afterbody are cut off, because extruded product front end deformation extent is small, mechanical property is relatively low, system
Product tail end forms contracting tail in extruding latter stage, so needing topping and afterbody.
7) online air-cooled, extrudate carries out online air blast cooling, and section bar is gone out after nib, is pulled in and given using hauling machine
The certain tension force of extruded product simultaneously with its rate of outflow synchronizing moving, prevent section bar and go out to twist and warp the defect such as phenomenon after nib.
8) traction aligning, being fixed on seven-roll Abramsen machine for the section bar of extrusion forming is aligned, and carries out shape fine setting
It is whole.
9) scale sawing carries out scale sawing to the section bar after aligning, cuts out satisfactory profile piece.
10) Ageing Treatment, is heat-treated to the section bar after cutting, and alloy is simply obtained after extruding press quenching
Solute is Mg and Si supersaturated solid solution, and the mechanical property Ageing Treatment not up to standard that has to pass through now could be up to standard, therefore
Need to carry out artificial aging processing, 180 DEG C of aging temp, aging time 6h to section bar.
Three embodiments to the present invention are described in detail above, but the content is only the preferable implementation of the present invention
Example, it is impossible to be considered as the practical range for limiting the present invention.All equivalent changes made according to the present patent application scope and improvement
Deng within the patent covering scope that all should still belong to the present invention.
Claims (10)
1. the extrusion die of lightweight aluminium alloys for automobile structural member, it is characterised in that：Matched including upper mould and with the upper mould
Middle mould, the upper mould surface is provided with feed well, tap hole is provided with the feed well, and the upper mould includes mould and two in split
Mould and the circular tongue core are detachably connected in individual circular tongue core, the split.
2. the extrusion die of lightweight aluminium alloys for automobile structural member according to claim 1, it is characterised in that：Described point
Discharge orifice includes the first tap hole, the second tap hole and the 3rd tap hole, and first tap hole is arranged at the charging groove edge,
Second tap hole is arranged in the middle of the feed well, and the 3rd tap hole is arranged in second tap hole.
3. the extrusion die of lightweight aluminium alloys for automobile structural member according to claim 2, it is characterised in that：Described
Two tap holes are recessed to form two grades of feed wells downwards, and the 3rd tap hole is arranged in two grades of feed wells.
4. the extrusion die of lightweight aluminium alloys for automobile structural member according to claim 3, it is characterised in that：Described
One tap hole includes ten, and second tap hole includes four, and each second tap hole is equipped with two the described 3rd
Tap hole.
5. according to the extrusion die of any described lightweight aluminium alloys for automobile structural member in claim 1-4, its feature exists
In：Be provided with the inside of the upper mould on the inside of pin and upper screw, the middle mould and be provided with groove and lower screw, the pin with it is described recessed
Groove is matched, and the upper screw is corresponding with the lower screwhole position.
6. according to the extrusion die of any described lightweight aluminium alloys for automobile structural member in claim 1-4, its feature exists
In：Tongue core connecting hole is provided with the split on the inside of mould, the circular tongue core bottom connects pin provided with tongue core, and the tongue core connects
Connect hole be connected with the tongue core pin pass through screw thread matching connection.
7. according to the extrusion die of any described lightweight aluminium alloys for automobile structural member in claim 1-4, its feature exists
In：Bonding container is provided with the middle mould.
8. prepared by the extrusion die of any described lightweight aluminium alloys for automobile structural member in claim 1-7 a kind of new
The preparation method of energy aluminium alloy extrusions, it is characterised in that：Preparation process is as follows：
Step one：The casting duricrust and surface oxide layer of aluminium alloy cast rod are removed, the aluminium alloy cast rod handled well is preheated, to pre-
The good aluminium alloy cast rod spraying carbon dust of heat, is then placed in the extruder recipient of preheating；
Step 2：Extrusion die heating to the lightweight aluminium alloys for automobile structural member；
Step 3：By pressurizing unit in recipient by aluminium alloy cast rod to the lightweight aluminium alloys for automobile structural member squeeze
Compression mould is extruded, and the aluminium alloy cast rod is extruded into from the extrusion die of the lightweight aluminium alloys for automobile structural member
Casting die；
Step 4：The extrusion head and afterbody are cut off, online air blast cooling is carried out, the extrusion after air-cooled is rectified
Directly, scale sawing is then carried out；
Step 5：Extrusion after cutting is heat-treated, new energy aluminium alloy extrusions is formed after processing.
9. the preparation method of new energy aluminium alloy extrusions according to claim 8, it is characterised in that：Aluminium in the step one
The preheating of alloy casting rod is ladder heating, and casting rod head is heated to 470-490 DEG C, and middle part is heated to 450-470 DEG C, Tail-heating temperature
Spend for 440-460 DEG C, recipient preheating temperature is that mould heating-up temperature is 450-470 DEG C in 450-470 DEG C, the step 2.
10. the preparation method of new energy aluminium alloy extrusions according to claim 8, it is characterised in that：In the step 5
Heat treatment condition is 160-180 DEG C, and handling duration is 6-10h.
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| CN107838215A (en) * | 2017-11-30 | 2018-03-27 | 江阴市江顺模具有限公司 | Automobile shock fixture section bar mold |
| CN110238225A (en) * | 2019-07-23 | 2019-09-17 | 锐新昌轻合金（常熟）有限公司 | A kind of extrusion die and extrusion process of new-energy automobile water cooling motor housing |
| CN110270605A (en) * | 2019-07-23 | 2019-09-24 | 锐新昌轻合金（常熟）有限公司 | A kind of high power tooth radiator extrusion die and extrusion process |
| CN112756416A (en) * | 2021-01-20 | 2021-05-07 | 重庆友利森汽车科技有限公司 | Automobile doorsill beam profile extrusion die |
| CN115139056A (en) * | 2022-02-10 | 2022-10-04 | 龙口市丛林铝材有限公司 | Extrusion production process of special wide aluminum alloy thin plate profile |
| CN116099890A (en) * | 2022-12-13 | 2023-05-12 | 广东高登铝业有限公司 | Forming die of automobile lightweight extrusion profile and application method thereof |
| CN116099890B (en) * | 2022-12-13 | 2023-09-15 | 广东高登铝业有限公司 | Forming die of automobile lightweight extrusion profile and application method thereof |
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