CN209577767U

CN209577767U - A kind of extruder and its big specification L-shaped section extrusion die of aviation

Info

Publication number: CN209577767U
Application number: CN201920258073.9U
Authority: CN
Inventors: 敖尚龙
Original assignee: Southwest Aluminum Group Co Ltd
Current assignee: Southwest Aluminum Group Co Ltd
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2019-11-05
Anticipated expiration: 2029-02-28

Abstract

This application discloses a kind of big specification L-shaped section extrusion dies of aviation, including flow-guilding mold and shaping mould, the flow-guilding mold, which is equipped with, flows through the deflector hole to form intermediate base for ingot casting, the shaping mould, which is equipped with, flows through the die hole to form profile for the intermediate base, and the die hole is identical as the cross sectional shape of the profile；The size of the deflector hole is greater than the size of the die hole, and the die hole can be all projected on inside the deflector hole on the flow direction of the ingot casting.Extrusion die provided herein, by increasing flow-guilding mold between shaping mould and aluminium ingot base, so that aluminum metal generates predeformation before flowing into die hole, and achieve the purpose that each section flow rate of metal is poor on reduction section using frictional resistance of the hole wall of deflector hole to aluminum metal.Disclosed herein as well is a kind of including the above-mentioned aviation extruder of big specification L-shaped section extrusion die.

Description

A kind of extruder and its big specification L-shaped section extrusion die of aviation

Technical field

This application involves material processing plant fields, more particularly to a kind of big specification L-shaped section extrusion die of aviation. In addition, the application further relates to a kind of extruder including above-mentioned aviation with big specification L-shaped section extrusion die.

Background technique

National defense construction specific use super large-scale aluminum profile, cut lengths reach 8-11 meters, are needed based on function, morpheme ruler Very little required precision is high, and curvature, torsion twist degree technical indicator and reach GB/T14846 " aluminium and aluminum alloy extrusion section bar dimensional discrepancy " High-precision grade or superelevation essence grade requirement.

It is as shown in Figure 1 the cross sectional shape of aviation L-shaped section example applied by the present invention, product specification is EL4180, alloy state are 7000 7 series extra super duralumin alloys.Profile section maximum circumscribed circle 515mm, width-thickness ratio 19.5mm, maximum wall Thick 60mm.Since profile section shown in FIG. 1 is extremely asymmetric, there is the biggish side of sectional area in the one end of profile only in bottom beam transverse direction Wall, which accounts for the 38.9% of profile total sectional area, and the other side in section is without metal solid.

Due to extremely asymmetric on profile section, when extruding, the imbalance of flow rate of metal will lead to the side wall side of profile Flow rate of metal is fast, and profile horizontally will appear deflection, reverse in the circumferential, generates serious knife-edge bending and turns round and twists change Shape, as shown in Figure 2.Its consequence is to not easily pass through subsequent straightening work to want profile progress effectively aligning to reach technical conditions It asks.Secondly, extremely dangerous, product will lead to side wall from the non-equilibrium outflow of die hole, lateral deflection or circumferential torsion when extruding The tapping channel of wiping die system is pushed up in side, causes stifled mould, and the production that arrives cannot continue, and lead to serious production accident.Its difficulty It also resides in, the alloy that the profile as Aircraft Structure Materials purposes uses is 7000 7 series extra super duralumin alloys, and metal fluidity is remote Lower than 6000 line aluminium alloys for being widely used in civil field, extrudability can be very poor, exacerbates its extrusion molding difficulty.

To avoid the occurrence of the above problem, in general, considering that profile section can be designed to by flow rate of metal balance when product design Symmetrical shape increases lateral bending of the auxiliary side wall to reduce or eliminate extrusion molding when in the other end in bottom beam transverse direction Deformation is twisted with turning round, in the part process segment in later period, by auxiliary side wall mechanical removal.Obviously, by increasing auxiliary side wall mode User's purchase cost will be will increase dramatically, especially as aluminium alloy aeronautical material, it is expensive, to the L shape of super large-scale Profile has significant economic value using the manufacturing method of no auxiliary side wall.In this case, molding key tool-- The requirement or can realize that normal extrusion produces that can the design of mold meet the specification to profile geometric dimension with manufacture Vital effect.

In conclusion the design of extrusion die and manufacture are most important to extremely asymmetric L-shaped section success production, Therefore, how to overcome the extremely asymmetric bring obstacle in section molding to improve profile extrusion by reasonable die design schemes Straightness reduces bending, turns round the appearance defects such as stubborn, and obtaining suitable sectional dimension is that those skilled in the art are urgently to be resolved Technical problem.

Apply for content

The purpose of the application is to provide a kind of big specification L-shaped section extrusion die of aviation, the big specification L shape type of the aviation Material extrusion die is added by flow-guilding mold, can effectively be reinforced the balance to aluminum metal each section flow velocity, be improved the matter of product Amount.The another object of the application is to provide a kind of extruder including above-mentioned aviation with big specification L-shaped section extrusion die.

To achieve the above object, the application provides the following technical solutions:

A kind of big specification L-shaped section extrusion die of aviation is equipped with side wall for the side with bottom beam and the bottom beam Profile processing, which is characterized in that including flow-guilding mold and shaping mould, the flow-guilding mold, which is equipped with, to be flowed through for ingot casting and to be formed Between base deflector hole, the shaping mould, which is equipped with, flows through the die hole to form profile for the intermediate base, the die hole and the type The cross sectional shape of material is identical；The exit end face of the flow-guilding mold is mounted on die sleeve after being bonded with the entrance face of the shaping mould It is interior；The size of the deflector hole is greater than the size of the die hole, and the die hole can be complete on the flow direction of the ingot casting Portion is projected on inside the deflector hole.

Preferably, the deflector hole is cross-section through-hole.

Preferably, the deflector hole is used to process the side close to the side wall of the bottom beam of the profile, in Vertical Square Upward the upper side and lower side respectively deviates 25-35mm relative to the corresponding position of the die hole；The deflector hole is for processing the type The side far from the side wall of the bottom beam of material, deviates 25-35mm relative to the corresponding position of the die hole in the horizontal direction, is hanging down The upward upside of histogram, downside respectively deviate 40-50mm relative to the corresponding position of the die hole；The deflector hole is described for processing The position top surface of the side wall of profile and lateral surface, medial surface respectively deviate 8-12mm relative to the corresponding position of the die hole.

Preferably, each edges and corners of the hole wall of the deflector hole are with arc surface transition connection, and radius of corner is not small In 10mm；The seamed edge that entrance face, the exit end face of the deflector hole and the flow-guilding mold are formed be set as right angle or radius≤ The fillet of 3mm.

Preferably, empty tool bore identical with the cross sectional shape of the profile, the sky tool bore are additionally provided on the shaping mould It is connected to the die hole, and the empty tool bore is located at the side of outlet end of the die hole close to the shaping mould.

Preferably, the hole wall of the empty tool bore between the hole wall of the die hole at a distance from be 3-5mm.

Preferably, the die hole is highly 120- corresponding to the side wall for squeezing out the profile with a thickness of 63-65mm 122mm；The length that the die hole corresponds to the bottom edge of the extrusion profile is 494-498mm；The die hole, which corresponds to, squeezes out institute State the bottom beam of profile with a thickness of 28-29mm；The die hole, which corresponds to the position for squeezing out the side wall of the profile and corresponds to, to be squeezed The bottom angle of the bottom beam of the profile is set as 100-102 ° out.

Preferably, the bottom edge of the bottom beam of the die hole is in arc-shaped, and the height of the circular arc is 0.34-0.36mm；It is described The top margin of die hole is set as rounding top and bottom pattern, the height 0.24-0.26mm of the circular arc；The bottom beam of the die hole is without side wall side and institute State the vertical mould centerline parallel of shaping mould, distance 250-270mm；In the horizontal mould of the bottom edge of the profile and the shaping mould Heart line parallel arrangement, bottom edge offsets downward 26.0-26.5mm.

Preferably, the die hole is crowded to corresponding to far from the end of the side wall from the bottom beam for squeezing out the profile is corresponded to 1st area of work belt, 2nd area of work belt, 3rd area of work belt, 4th area of work belt and work are successively arranged between the side wall top surface of the profile out 5th area of band；The length in 1st area of work belt is set as 4-6mm；The length in 2nd area of work belt is set as 11-13mm；The work The length for making 3rd area of band is set as 9-11mm；The length in 4th area of work belt is set as 24-26mm；The length in 5th area of work belt Degree is set as 14-16mm.

The application also provides a kind of extruder, squeezes including the big specification L-shaped section of aviation described in above-mentioned any one Mold.

The big specification L-shaped section extrusion die of aviation provided herein, for one with bottom beam and the bottom beam Side is equipped with the processing of the profile of side wall, including flow-guilding mold and shaping mould, and the flow-guilding mold, which is equipped with, to be flowed through for ingot casting and to be formed Between base deflector hole, the shaping mould, which is equipped with, flows through the die hole to form profile for the intermediate base, the die hole and the type The cross sectional shape of material is identical；The exit end face of the flow-guilding mold is mounted on die sleeve after being bonded with the entrance face of the shaping mould It is interior；The size of the deflector hole is greater than the size of the die hole, and the die hole can be complete on the flow direction of the ingot casting Portion is projected on inside the deflector hole.The big specification L-shaped section extrusion die of the aviation, by increasing between shaping mould and aluminium ingot base Add flow-guilding mold, and reinforces the balance to aluminum metal each section flow velocity, the deflector hole of flow-guilding mold by the deflector hole of flow-guilding mold Section and the profile of profile have correlation, so that aluminum metal generates predeformation before flowing into die hole, and utilize the hole wall of deflector hole It is poor to achieve the purpose that reduce each section flow rate of metal on section to the frictional resistance of aluminum metal.

Extruder provided herein is equipped with the big specification L-shaped section extrusion die of above-mentioned aviation, due to the aviation It is had above-mentioned technique effect with big specification L-shaped section extrusion die, therefore, is equipped with the big specification L-shaped section extrusion die of the aviation The extruder of tool should also be as having corresponding technical effect.

Detailed description of the invention

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings；

Fig. 1 is the structural schematic diagram of the big specification L-shaped section of aviation；

Fig. 2 is that aviation squeezes the lateral bending schematic diagram easily occurred with big specification L-shaped section；

Fig. 3 be aviation provided herein flow-guilding mold in big specification L-shaped section extrusion die, shaping mould structure show It is intended to；

Fig. 4 is flow-guilding mold, shaping mould, die sleeve, extrusion cylinder, dummy block, aluminium ingot base assembly longitudinal profile schematic diagram；

Fig. 5 is the mold hole dimension scheme of shaping mould；

Fig. 6 is the mold hole work belt dimension plan of shaping mould；

Fig. 7 is the mold hole dimension scheme of flow-guilding mold；

Wherein: bottom beam (1-1), side wall (1-2), bottom surface (1-3), bottom beam top surface (1-4), lateral surface (1-5), medial surface (1-6), side wall top surface (1-7), flow-guilding mold (2-1), flow-guilding mold arrival end (2-2), deflector hole (2-3), deflector hole profile (2- 4), shaping mould (3-1), shaping mould arrival end (3-2), die hole (3-3), empty tool bore (3-4), 1st area of work belt (3-5), work belt 2 Area (3-6), 3rd area of work belt (3-7), 4th area of work belt (3-8), 5th area of work belt (3-9), die sleeve (4), extrusion cylinder (5), dummy block (6), aluminium ingot base (7).

Specific embodiment

The core of the application is to provide a kind of big specification L-shaped section extrusion die of aviation, the big specification L shape type of the aviation Material extrusion die is added by flow-guilding mold, can significantly improve the processing efficiency of L-shaped section, processing cost is reduced, after reduction Continuous manufacturing procedure.Another core of the application is to provide a kind of squeezing including the big specification L-shaped section extrusion die of above-mentioned aviation Press.

Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall in the protection scope of this application.

Fig. 3 to Fig. 7 is please referred to, Fig. 3 is aviation provided herein water conservancy diversion in big specification L-shaped section extrusion die The structural schematic diagram of mould, shaping mould；Fig. 4, which is flow-guilding mold, the assembly of shaping mould, die sleeve, extrusion cylinder, dummy block, aluminium ingot base is longitudinal cuts open Face schematic diagram；Fig. 5 is the mold hole dimension scheme of shaping mould；Fig. 6 is the mold hole work belt dimension plan of shaping mould；Fig. 7 is water conservancy diversion The mold hole dimension scheme of mould.

In this embodiment, the big specification L-shaped section extrusion die of aviation has bottom beam 1-1 and bottom beam for processing The side of 1-1 is equipped with the profile of side wall 1-2, specifically, the bottom surface 1-3 length of profile is 485mm, the height of bottom beam 1-1 is Height between 26mm, i.e. bottom beam top surface 1-4 and bottom surface 1-3 is 26mm, and the width of side wall 1-2 is 60mm, the height of side wall 1-2 For 116mm, i.e. the distance between side wall top surface 1-7 and bottom surface 1-3 is 116mm, and the angle between side wall 1-2 and bottom beam 1-1 is 101 °, the radius of the knuckle between side wall 1-2 and bottom beam 1-1 is 10mm.

The extrusion die includes flow-guilding mold 2-1 and shaping mould 3-1, and flow-guilding mold 2-1, which is equipped with, to be flowed through for ingot casting and to be formed Between base deflector hole 2-3, shaping mould 3-1, which is equipped with, flows through the die hole 3-3 to form profile for intermediate base, die hole 3-3 and profile Cross sectional shape is identical, also, the shape of deflector hole 2-3 and the cross sectional shape of profile have correlation.

Specifically, flow-guilding mold 2-1 includes flow-guilding mold arrival end 2-2 and the outlet end flow-guilding mold 2-1, shaping mould 3-1 includes into The exit end face of pattern arrival end 3-2 and the outlet end shaping mould 3-1, flow-guilding mold 2-1 can be bonded with the entrance face of shaping mould 3-1 After be mounted in die sleeve 4；The size of deflector hole 2-3 is greater than the size of die hole 3-3, and die hole 3-3 is in the flow direction of ingot casting On can all be projected on inside deflector hole 2-3.

More specifically, which is made of flow-guilding mold 2-1, shaping mould 3-1, and the two is applied in combination, flow-guilding mold entrance The end face of end 2-2 is contacted with ingot casting, and the exit end face of flow-guilding mold 2-1 is bonded with the entrance face of shaping mould 3-1.Flow-guilding mold 2-1 It combines and is installed in die sleeve 4 with shaping mould 3-1, and be used cooperatively with the equal tools of extrusion cylinder 5.Aluminium ingot base 7 is placed on extruding In the circular hole of cylinder 5, one end is contacted with flow-guilding mold arrival end 2-2, and one end is contacted with 6 end face of dummy block.Dummy block 6 is in extruding force It is mobile to mold direction under promotion, so that aluminium ingot base 7 is generated plastic deformation, aluminum metal flows into the deflector hole 2-3 of flow-guilding mold 2-1, then Flow into the die hole 3-3 of shaping mould 3-1.Under the radial constraint of the die hole 3-3 of shaping mould 3-1, aluminum metal pass through die hole 3-3 after at To have the strip aluminum products for stablizing section, i.e. profile in the longitudinal direction.

The big specification L-shaped section extrusion die of the aviation, by increasing flow-guilding mold between shaping mould 3-1 and aluminium ingot base 7 2-1, and reinforce by the deflector hole 2-3 of flow-guilding mold 2-1 the balance to aluminum metal each section flow velocity, the water conservancy diversion of flow-guilding mold 2-1 The section of hole profile 2-4 and the section of outline of profile have correlation, so that aluminum metal generates predeformation before flowing into die hole 3-3, And achieve the purpose that each section flow rate of metal is poor on reduction section using frictional resistance of the hole wall of deflector hole 2-3 to aluminum metal.

On the basis of the respective embodiments described above, flow-guilding mold 2-1 thickness is optional, preferably 60-120mm, example of the invention For 100mm；The outer diameter of flow-guilding mold 2-1 is optional, this example is 700-800mm.The thickness of shaping mould 3-1 is optional, preferably 120- 180, example of the invention is 150mm；The outer diameter of shaping mould 3-1 is optional, preferably 700-800mm.Flow-guilding mold 2-1 and shaping mould 3- 1 other foreign steamer Guo sizes are determined based on matching to related assembly parts, are not key elements of the invention, therefore are not made more It illustrates.

On the basis of the respective embodiments described above, deflector hole 2-3 is cross-section through-hole, i.e. deflector hole 2-3 enters in flow-guilding mold It is cross-section on mouth end 2-2 to the extending direction between outlet end.

On the basis of the respective embodiments described above, deflector hole 2-3 is used to process the close side wall 1-2 of the bottom beam 1-1 of profile Side, the upper side and lower side in vertical direction respectively deviates 25-35mm relative to the corresponding position of die hole 3-3；Specifically, bottom beam The middle part of 1-1 will be got well compared with bottom beam 1-1 without the end side wall 1-2 close to mold center, metal fluidity, but since bottom beam 1-1 wall is thin, will The upside in vertical direction deflector hole 2-3, downside respectively deviate 30mm relative to die hole 3-3.

On the basis of the respective embodiments described above, deflector hole 2-3 is used to process the separate side wall 1-2 of the bottom beam 1-1 of profile Side, deviate 25-35mm relative to the corresponding position of die hole 3-3 in the horizontal direction, upside, downside in vertical direction be opposite The corresponding position of die hole 3-3 respectively deviates 40-50mm；Specifically, due to bottom beam 1-1 without the end side wall 1-2 by " wall is thin ", " close to squeeze 5 inner wall frictional resistance of pressure cylinder is big " double influence, metal fluidity is worst, to reduce diversion cavity side wall to metal friction resistance, increases The mobility of strong metal need to suitably increase water conservancy diversion cavity area, 30mm be deviated relative to die hole 3-3 in the horizontal direction respectively, vertical Upside, downside on direction respectively deviate 45mm relative to die hole 3-3.

On the basis of the respective embodiments described above, deflector hole 2-3 is used to process the position top surface of the side wall 1-2 of profile and outer Side 1-5, medial surface 1-6 respectively deviate 8-12mm relative to the corresponding position of die hole 3-3；Specifically, the metal at side wall 1-2 is real Bulk area is maximum, and metal fluidity is most strong part on contoured cross-section at this, needs to hinder using the friction of the side wall of deflector hole 2-3 Power inhibits metal flow, and to reach the flow rate of metal in balance whole cross section, therefore space of deflector hole 2-3 should greatly limit at this System, respectively deviates 10mm relative to the top surface of side wall 1-2 die hole 3-3 and lateral surface 1-5, medial surface 1-6 respectively.Clearly as water conservancy diversion Hole 2-3 side wall is close from die hole 3-3, fairly obvious to the frictional resistance for flowing through metal herein.

On the basis of the respective embodiments described above, each edges and corners of the hole wall of deflector hole 2-3 are connected with arc surface transition, And radius of corner is not less than 10mm；Specifically, to reduce wedge angle bring turbulent flow, each edges and corners of the hole wall of deflector hole 2-3 With arc surface transition connection, radius of corner is optional, preferably not less than R10mm.

On the basis of the respective embodiments described above, entrance face, the exit end face of deflector hole 2-3 and flow-guilding mold 2-1 is formed Seamed edge be set as right angle or radius≤3mm fillet.Specifically, the entrance face of deflector hole 2-3 and flow-guilding mold 2-1, outlet The seamed edge that end face is formed is set as the fillet or right angle that radius of corner is not more than R3.

On the basis of the respective embodiments described above, empty knife identical with the cross sectional shape of profile is additionally provided on shaping mould 3-1 Hole 3-4, empty tool bore 3-4 are connected to die hole 3-3, and sky tool bore 3-4 is located at die hole 3-3 close to the outlet end of shaping mould 3-1 Side.

Specifically, the die hole 3-3 of shaping mould 3-1 play the guiding role to metal, have the function that profile sectional dimension of being formed. Empty tool bore 3-4 sectional dimension is bigger than molding hole sectional dimension, and effect is that aluminum metal is allowed to disengage with Mold Metal, avoids mould Tool generates friction to Surface of profile, meanwhile, it play the guiding role to molding profile, makes to squeeze out profile as far as possible along the direction of extrusion It is mobile.

What needs to be explained here is that nominal dimension, dimensional tolerance, metal of the size of die hole 3-3 based on profile section are swollen The parameters such as swollen coefficient, deformation temperature, tension straingtening technique determine.

On the basis of the respective embodiments described above, the hole wall of empty tool bore 3-4 between the hole wall of die hole 3-3 at a distance from be 3- 5mm。

On the basis of the respective embodiments described above, die hole 3-3 is corresponding to the side wall 1-2 for squeezing out profile with a thickness of 63- 65mm is highly 120-122mm；The length that die hole 3-3 corresponds to the bottom edge of extrusion profile is 494-498mm；Die hole 3-3 is corresponding In the bottom beam 1-1 for squeezing out profile with a thickness of 28-29mm；Die hole 3-3 correspond to squeeze out profile side wall 1-2 position with it is corresponding 100-102 ° is set as in the bottom angle for the bottom beam 1-1 for squeezing out profile.

Specifically, the width of the side wall 1-2 of die hole 3-3, namely corresponding to the thickness for squeezing out profile side wall 1-2, be set as 65mm；The height of the side wall 1-2 of die hole 3-3 is set as 121mm；The bottom edge length of die hole 3-3, namely corresponding to extrusion profile The length on bottom edge, is set as 496mm；The height of the bottom beam 1-1 of die hole 3-3, namely the thickness corresponding to the bottom beam 1-1 for squeezing out profile Degree, is set as 28.6mm；The angle of the side wall 1-2 and bottom beam 1-1 of die hole 3-3 are set as 101 degree.

On the basis of the respective embodiments described above, the bottom edge of the bottom beam 1-1 of die hole 3-3 is in arc-shaped, and the height of circular arc is 0.34-0.36mm；The top margin of die hole 3-3 is set as rounding top and bottom pattern, the height 0.24-0.26mm of circular arc；Specifically, due to mold Flexible deformation can be generated under squeezed state, and the bottom surface 1-3 of profile can be caused to generate depression defect, i.e. plane clearance.To offset mould Have flexible deformation bring change in size, avoids plane clearance overproof and scrapped to profile, the bottom edge of die hole 3-3 is set as arc-shaped State, the height 0.35mm of circular arc.Similarly, it is influenced to offset Die Elastic Deformation, the top margin of the bottom beam 1-1 of die hole 3-3 is set as Rounding top and bottom pattern, the height 0.25mm of circular arc.

On the basis of the respective embodiments described above, the bottom beam 1-1 of die hole 3-3 is vertical with shaping mould 3-1's without the side side wall 1-2 Mould centerline parallel, distance 250-270mm；The horizontal mould centerline parallel of the bottom edge of profile and shaping mould 3-1 arranges, bottom edge to Lower offset 26.0-26.5mm.Specifically, being not suitable for since profile section is extremely asymmetric by cross section geometric center and shaping mould 3-1 Axle center be overlapped.For the flow velocity of budget metals, the side wall 1-2 of die hole 3-3 is partially away from the axle center of shaping mould 3-1 more by the present invention It is remote.This example specifically, the bottom beam 1-1 of die hole 3-3 without the side side wall 1-2 mould centerline parallel vertical with shaping mould 3-1, distance 260mm；The bottom edge of profile and the horizontal mould centerline parallel of shaping mould 3-1 arrange that bottom edge offsets downward 26.1mm.

Further, the hole wall of die hole 3-3 is the combination of continuous plane or curved surface, referred to as work belt.Work belt is along extruding Length on direction is different in the circumferential direction of die hole 3-3, to make every effort to each portion for flowing through die hole 3-3 for adjusting flow rate of metal Divide flow rate of metal as identical as possible.Each section flow rate of metal difference for such as flowing through die hole 3-3 is big, will lead to and squeezes out profile generation partially Turn, turn round and twist, it is clear that whether the shape of work belt and length are rationally one of key elements that success of the present invention is implemented.

Specifically, die hole 3-3 is from the bottom beam 1-1 for squeezing out profile is corresponded to far from the end of side wall 1-2 to corresponding to extrusion 1 area 3-5 of work belt, 2 area 3-6 of work belt, 3 area 3-7 of work belt, 4th area of work belt are successively arranged between the top surface side wall 1-2 of profile 5 area 3-9 of 3-8 and work belt；The length of 1 area 3-5 of work belt is set as 4-6mm；The length of 2 area 3-6 of work belt is set as 11- 13mm；The length of 3 area 3-7 of work belt is set as 9-11mm；The length of 4 area 3-8 of work belt is set as 24-26mm；5th area of work belt The length of 3-9 is set as 14-16mm.

More specifically, because leaning on near-lying mode center to be conducive to the flowing of metal, the length of 2 area 3-6 of work belt is set as 12mm；It examines Consider far from the center die hole 3-3, and wall thickness is thin, metal fluidity is worst, and the length of 1 area 3-5 of work belt is set as 5mm；Though die hole The height of 3-3 is identical as the work belt of 2 area 3-6 of work belt, but farther out from mould center, and metal flow is deteriorated, 3 area 3-7 of work belt Length be set as 10mm；Though being unfavorable for metal flow far from die hole 3-3 center pole, the solid metal of side wall 1-2 is maximum, pole The big flowing for promoting metal, therefore the length of 4 area 3-8 of work belt is set as 25mm；In view of farthest from mould center and by angle The frictional resistance in portion is big, and considers that its solid metal is big, and the length of 5 area 3-9 of work belt is small compared with 4 area 3-8 of work belt, but is greater than work Make 1 area 3-5 of band, 2nd area, 3rd area, is set as 15mm.

What needs to be explained here is that change dramatically does not occur for the friction for being subject to the metal between work zone, avoid Apparent extruding streak is generated squeezing out Surface of profile, the work belt between operated adjacent zone is chamfered transition connection.The mould Tool, by being provided with flow-guilding mold 2-1 between shaping mould 3-1 and aluminium ingot base 7, with before aluminum metal flows into die hole 3-3 to will The flow velocity for flowing into each section metal of die hole 3-3 is pre-equilibrated.

It include above-mentioned boat present invention also provides one kind other than above-mentioned aviation is with big specification L-shaped section extrusion die The extruder of empty big specification L-shaped section extrusion die, specifically, weight of the profile example selection extruding force up to 10000 tons or more Type extruder squeezes production.Also, circle of the diameter of bore that profile example is configured using aforementioned extruder not less than 650mm squeezes Cylinder 5 squeezes production.Refer to the prior art for other Each parts of the extruder, and repeats no more herein.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.

Aviation provided herein is described in detail with big specification L-shaped section extrusion die above.Herein Applying specific case, the principle and implementation of this application are described, and the explanation of above example is only intended to help Understand the present processes and its core concept.It should be pointed out that for those skilled in the art, not taking off Under the premise of from the application principle, can also to the application, some improvement and modification can also be carried out, these improvement and modification also fall into this Apply in scope of protection of the claims.

Claims

1. the big specification L-shaped section extrusion die of a kind of aviation, for the side with bottom beam (1-1) and the bottom beam (1-1) The processing of profile equipped with side wall (1-2), which is characterized in that including flow-guilding mold (2-1) and shaping mould (3-1), the flow-guilding mold (2-1), which is equipped with, flows through the deflector hole (2-3) to form intermediate base for ingot casting, and the shaping mould (3-1), which is equipped with, to supply in described Between base flow through the die hole (3-3) to form profile, the die hole (3-3) is identical as the cross sectional shape of the profile；The flow-guilding mold The exit end face of (2-1) is mounted in die sleeve (4) after being bonded with the entrance face of the shaping mould (3-1)；The deflector hole The size of (2-3) is greater than the size of the die hole (3-3), and the die hole (3-3) can on the flow direction of the ingot casting It is internal to be all projected on the deflector hole (2-3).

2. the big specification L-shaped section extrusion die of aviation according to claim 1, which is characterized in that the deflector hole (2- It 3) is cross-section through-hole.

3. the big specification L-shaped section extrusion die of aviation according to claim 1, which is characterized in that the deflector hole (2- 3) for processing the side close to the side wall (1-2) of the bottom beam (1-1) of the profile, upside in vertical direction is under Side respectively deviates 25-35mm relative to the corresponding position of the die hole (3-3)；The deflector hole (2-3) is for processing the profile The side far from the side wall (1-2) of bottom beam (1-1), deviates relative to the corresponding position of the die hole (3-3) in the horizontal direction 25-35mm, upside in vertical direction, downside respectively deviate 40-50mm relative to the corresponding position of the die hole (3-3)；It is described Deflector hole (2-3) is used to process position top surface and the lateral surface (1-5), medial surface (1-6) each phase of the side wall (1-2) of the profile 8-12mm is deviated for the corresponding position of the die hole (3-3).

4. the big specification L-shaped section extrusion die of aviation according to claim 1, which is characterized in that the deflector hole (2- 3) each edges and corners of hole wall are with arc surface transition connection, and radius of corner is not less than 10mm；The deflector hole (2-3) with The seamed edge that entrance face, the exit end face of the flow-guilding mold (2-1) are formed is set as right angle or radius≤3mm fillet.

5. the big specification L-shaped section extrusion die of aviation according to any one of claims 1 to 4, which is characterized in that institute State and be additionally provided with empty tool bore (3-4) identical with the cross sectional shape of the profile on shaping mould (3-1), the sky tool bore (3-4) with Die hole (3-3) connection, and the empty tool bore (3-4) is located at the die hole (3-3) going out close to the shaping mould (3-1) The side at mouth end.

6. the big specification L-shaped section extrusion die of aviation according to claim 5, which is characterized in that the sky tool bore (3- 4) hole wall between the hole wall of the die hole (3-3) at a distance from be 3-5mm.

7. the big specification L-shaped section extrusion die of aviation according to claim 5, which is characterized in that the die hole (3-3) It is highly 120-122mm corresponding to the side wall (1-2) for squeezing out the profile with a thickness of 63-65mm；The die hole (3-3) is right It should be 494-498mm in the length on the bottom edge for squeezing out the profile；The die hole (3-3) corresponds to the bottom beam for squeezing out the profile (1-1) with a thickness of 28-29mm；The die hole (3-3), which corresponds to, to be squeezed out the position of the side wall (1-2) of the profile and corresponds to The bottom angle for squeezing out the bottom beam (1-1) of the profile is set as 100-102 °.

8. the big specification L-shaped section extrusion die of aviation according to claim 5, which is characterized in that the die hole (3-3) The bottom edge of bottom beam (1-1) be in arc-shaped, the height of the circular arc is 0.34-0.36mm；The top margin of the die hole (3-3) is arranged For rounding top and bottom pattern, the height 0.24-0.26mm of the circular arc；The bottom beam (1-1) of the die hole (3-3) without the side wall side (1-2) with The vertical mould centerline parallel of the shaping mould (3-1), distance 250-270mm；The bottom edge of the profile and the shaping mould (3- 1) horizontal mould centerline parallel arrangement, bottom edge offsets downward 26.0-26.5mm.

9. the big specification L-shaped section extrusion die of aviation according to any one of claims 1 to 4, which is characterized in that institute It states die hole (3-3) and corresponds to the bottom beam (1-1) for squeezing out the profile certainly far from the end of the side wall (1-2) to corresponding to extrusion 1st area of work belt (3-5), 2nd area of work belt (3-6), 3 area (3- of work belt are successively arranged between top surface side wall (1-2) of the profile 7), 4th area of work belt (3-8) and 5th area of work belt (3-9)；The length of 1st area of work belt (3-5) is set as 4-6mm；The work The length for making 2nd area of band (3-6) is set as 11-13mm；The length of 3rd area of work belt (3-7) is set as 9-11mm；The work The length in 4th area of band (3-8) is set as 24-26mm；The length of 5th area of work belt (3-9) is set as 14-16mm.

10. a kind of extruder, including the big specification L-shaped section extrusion die of aviation, which is characterized in that the big specification of the aviation L-shaped section extrusion die is the big specification L-shaped section extrusion die of aviation described in claim 1 to 9 any one.