CN102527763A - Construction and design method of asymmetric product extrusion die of high-strength aluminum alloy - Google Patents
Construction and design method of asymmetric product extrusion die of high-strength aluminum alloy Download PDFInfo
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Abstract
The invention discloses a construction and design method of an asymmetric product extrusion die of a high-strength aluminum alloy. The asymmetric product extrusion die is used for a machine platform molded by extrusion, wherein the extrusion die comprises a male die, a female die, a welding chamber and a material guiding chamber. A cylindrical high-strength aluminum alloy ingot is input into the die so as to be output as an asymmetric aluminum extrusion product. According to the method provided by the invention, formulas of material mechanics and experience or simulation values are utilized to solve the best design value of the height of each part of the die in the case of unchanged total length of the die, so as to overcome the defect of difficult design of the asymmetric product extrusion die of the high-strength aluminum alloy.
Description
Technical field
The present invention relates to a kind of structure and method for designing of asymmetric goods press molds, particularly relate to a kind of structure and method for designing that is applicable to the asymmetric goods press molds of high-strength aluminum alloy.
Background technology
In the industry aluminium alloy is had a specification commonly used, it numbers characteristic and the main application of representing material with 4 bit digital, is listed below:
1000 series (1050,1070): rafifinal, electrical conductance, heat conductivity, corrosion resistance (being used for conductive material, heat-exchange device, chemical industry class unit piping).
2000 series (2011,2014,2017,2117,2024): machinability is outstanding, high strength, corrosion resistance strong (be not used to cut structural woods such as material, part screw, aircraft material, forge with material, steam turbine car oil pressure part, sporting goods).
3000 series (3003,3203): hear resistance is than fine aluminium is good, intensity is high, corrosion resistance good (being used for chemical devices pipe arrangement, heat-exchange device, used in copy machines sensitization tube).
4000 series (4032): heat-resisting, abrasion performance good (being used for VCR magnetic head, piston component, forging).
5000 series (5052,5056): middle strength alloys, anti-corrosion, weldability good (being used for chemical industry pipe arrangement, machine parts, camera lens barrel).
6000 series (6061): the middle strength structure alloy that corrosion resistance is outstanding, weldable, processability good (being used for vehicle, boats and ships, marine transportation machine material, road) with building materials, sporting goods etc.; 6000 series (6063): corrosion resistance, rational well, the extruding property excellent (being used to account for building materials, ornament material, tame electrical article material and other general general articles for use of squeeze wood majority) in surface.
7000 series (7005): middle intensity (being used for welding) with constructional alloy, vehicle, automobile, locomotive part; 7000 series (7075): be maximum intensity alloy, corrosion resistance, weldability poor (being used for machine components, sporting goods etc. such as aircraft).
8000 series (8090,8091): practical alloy is few; In addition, a kind of 9000 series alloys materials are arranged still on the market at present, by the U.S. national defense industrial protection, 9000 series alloys material characteristics are ultralight, superhigh intensity, welding excellent processability, are used on the aerospace industry mostly.
As stated, wherein the main alloy element of 7,000 series alloys materials is a zinc, adds that a little magnesium alloy can make material ability heat-treated, and arrives the very high strength characteristic; In addition, this series material generally all adds alloys such as a spot of copper and chromium, and wherein the highest to number 7075 intensity of aluminum alloy, is fit to the high strength accessory.Yet, extruded in the industrial circle in conventional aluminum in the past, it is many directly extruding seamed pipe to extrude the method for hollow pipe fitting, and extruded material is many to be main material with 6,000 series alloys; Though 7,000 series have the material behavior that high strength, high tenacity etc. are superior to 6,000 series, because all being defined as in academia and industry, aluminium alloy 7,000 series materials can not weld material, the more difficult mode that directly extrudes that is used in is made.Therefore the asymmetric goods press molds that designs a kind of high-strength aluminum alloy is the high thing of degree of difficulty, executes repeatedly according to experience fully in the past and does and correction, expends time in and money.
Therefore, be necessary to provide the structure and the method for designing of the asymmetric goods press molds of a kind of high-strength aluminum alloy, to solve the existing in prior technology problem.
Summary of the invention
Key in technical field herein and describe paragraph.Main purpose of the present invention is to provide the method for designing of the asymmetric goods press molds of a kind of high-strength aluminum alloy; It is by formula and the empirical value or the analogue value of the mechanics of materials; Under the constant prerequisite of mould total length; Ask for the optimal design value of each position height of mould, make said mould enough intensity arranged to be applicable to the processing procedure that extrudes of high-strength aluminum alloy.
Another object of the present invention is to provide the structure of the asymmetric goods press molds of a kind of high-strength aluminum alloy; It is by the seam chamber structure of the formed non-complete symmetry in the second seam chamber of the first seam chamber of male model and master mold; Enough seam pressure makes said seam chamber except can be provided; And can make the flow velocity uniformity of material, to improve quality of finished.
A purpose more of the present invention is to provide the structure of the asymmetric goods press molds of a kind of high-strength aluminum alloy; It is provided with at least one choked flow projection by the guide chamber at master mold; So that enough seam pressure to be provided, and the flow velocity uniformity of material, to improve the quality of finished product.
For reaching above-mentioned purpose; The present invention provides the method for designing of the asymmetric goods press molds of a kind of high-strength aluminum alloy; Said asymmetric goods press molds is used for the board of an extrusion forming; Import 7,000 series alloys ingots of a cylindricality, to be output into the asymmetric goods that extrude, said press molds comprises through said mould:
One male model; Its main body is cylindricality; The row of its rounded array in upper end is provided with a plurality of fan-shaped pan feeding windows, and forms the bridge part of respective amount between the said pan feeding window, and the main body lower end of said male model is located in one first seam chamber; And be communicated with said pan feeding window, a moulding internal mold portion is convexly set in the below of the said first seam chamber end face;
One master mold; Its main body is the cylindricality of a hollow form; It is fixed in the below of said male model main body; And coat the said male model moulding internal mold portion of protrusion downwards, the first seam chamber of the corresponding said male model of said master mold is provided with one second seam chamber, and the moulding internal mold portion of corresponding said male model is provided with a moulding external mold portion;
One seam chamber is positioned at the downstream of said a plurality of pan feeding windows, comprises the said first seam chamber of being located at said male model and the said second seam chamber of being located at said master mold; And
One guide chamber; Be positioned at the downstream of said seam chamber; The madial wall of said guide chamber is the moulding internal mold portion of said male model, and the lateral wall of said guide chamber is the moulding external mold portion of said master mold, and said guide chamber is the said asymmetric goods that extrude with said ingot final molding;
Wherein, said method for designing comprises:
The total height of decision mould;
Calculate the simply supported beam desired height of master mold;
Calculate seam chamber desired height;
Calculate the bridge part desired height of male model; And
The height of the bridge part of simply supported beam, seam chamber and the male model of decision master mold.
In one embodiment of this invention, the simply supported beam desired height of said master mold system obtains by the formula of the mechanics of materials.
In one embodiment of this invention, desired height system in said seam chamber is by the empirical value substitution.
In one embodiment of this invention, desired height system in said seam chamber obtains by mould flow field simulation software.
In one embodiment of this invention, the bridge part desired height of said male model system obtains by the formula of the mechanics of materials.
In one embodiment of this invention, the formed said seam chamber, the second seam chamber of first seam chamber of said male model and said master mold is the seam chamber structure of a non-complete symmetry.
In one embodiment of this invention, the non-complete symmetry of said seam chamber structure is corresponding with the said asymmetric profile that extrudes goods.
In one embodiment of this invention, the said mould central authorities that flow through of the said asymmetric about one-tenth level of a diagonal that extrudes goods.
In one embodiment of this invention, the non-complete symmetric profile of said seam chamber structure is a left-right symmetric.
In one embodiment of this invention, the structure of the asymmetric goods press molds of said high-strength aluminum alloy comprises at least one choked flow projection in addition, is located on the wall of moulding external mold portion of master mold of said guide chamber.
In one embodiment of this invention, said at least one choked flow projection is an inclined plane shape choked flow projection or a stepped choked flow projection.
In one embodiment of this invention, said guide chamber inlet is provided with the oblique angle.
In one embodiment of this invention, said at least one choked flow projection is located on the outer side surface of said seam chamber.
Description of drawings
Fig. 1: the three-dimensional exploded view of the asymmetric goods press molds of the high-strength aluminum alloy of preferred embodiment of the present invention.
Fig. 2 A: the male model top view of the asymmetric goods press molds of the high-strength aluminum alloy of preferred embodiment of the present invention.
Fig. 2 B: the master mold top view of the asymmetric goods press molds of the high-strength aluminum alloy of preferred embodiment of the present invention.
Fig. 3: the sectional view of the asymmetric goods press molds of the high-strength aluminum alloy of preferred embodiment of the present invention.
The sectional view that amplify the part of Fig. 3 A: Fig. 3.
Fig. 4: the asymmetric stereogram that extrudes article of preferred embodiment of the present invention.
Fig. 5: the method for designing flow chart of the asymmetric goods press molds of the high-strength aluminum alloy of preferred embodiment of the present invention.
The specific embodiment
For making above-mentioned purpose of the present invention, characteristic and advantage more obviously understandable, hereinafter is special lifts preferred embodiment of the present invention, and conjunction with figs., elaborates as follows:
Description is graphic with reference to what add, can be in order to the specific embodiment of implementing in order to illustration the present invention.The direction term that the present invention mentioned, for example " on ", D score, " preceding ", " back ", " interior ", " outward ", " left side ", " right side " etc., only be direction with reference to annexed drawings.Therefore, the direction term of being mentioned in following examples of the present invention only is to be used for aid illustration technology contents of the present invention, but not is used for limiting the present invention.
Disclosed is the method for designing of the asymmetric goods press molds of a kind of high-strength aluminum alloy; The asymmetric goods press molds of said high-strength aluminum alloy is used for the board of an extrusion forming; Import 7,000 serial high-strength aluminum alloy ingots of a cylindricality, through said mould to be output into the asymmetric article that extrude of an aluminium alloy.Wherein, said mould is preferable to be made with tool steel, for example SKD-61.
Please be simultaneously with reference to shown in figure 1 and Fig. 2 A, Fig. 1 discloses the three-dimensional exploded view of the asymmetric goods press molds of high-strength aluminum alloy of preferred embodiment of the present invention; Fig. 2 A discloses the male model top view of the asymmetric goods press molds of high-strength aluminum alloy of preferred embodiment of the present invention.The asymmetric goods press molds of one high-strength aluminum alloy comprises a male model 10 and a master mold 20.Said male model 10 main bodys are cylindricality; The row of its rounded array in upper end is provided with 4 fan-shaped pan feeding windows 11; And form the bridge part 12 of respective amount between the said pan feeding window 11; The main body lower end of said male model 11 is located in one first seam chamber 13, and is communicated with said pan feeding window 11, and a moulding internal mold portion 14 is convexly set in the below of the said first seam chamber 13 end faces.
Please refer to shown in Fig. 1 and Fig. 2 B, Fig. 2 B discloses the master mold top view of the asymmetric goods press molds of high-strength aluminum alloy of preferred embodiment of the present invention.Said master mold 20 main bodys are the cylindricality of a hollow form; It is fixed in the below of said male model 10 main bodys; And coat the said male model 10 moulding internal mold portion 14 of protrusion downwards; The first seam chamber 13 of said master mold 20 corresponding said male models 10 is provided with one second seam chamber 21, and the moulding internal mold portion 14 of corresponding said male model 10 is provided with a moulding external mold portion 22.
Please be simultaneously with reference to shown in Figure 3, Fig. 3 discloses the sectional view of the asymmetric goods press molds of high-strength aluminum alloy of preferred embodiment of the present invention.After said male model 10 and 20 combinations of said master mold, the asymmetric goods press molds of said high-strength aluminum alloy comprises in addition: a seam chamber 30 and a guide chamber 40.As shown in Figure 3, said seam chamber 30 is positioned at the downstream of said 4 pan feeding windows 11, comprises the said first seam chamber 13 of being located at said male model 10 and the said second seam chamber 21 of being located at said master mold 20.Said guide chamber 40 is positioned at the downstream of said seam chamber 30; The madial wall of said guide chamber 40 is the moulding internal mold portion 14 of said male model 10; The lateral wall of said guide chamber 40 is the moulding external mold portion 22 of said master mold 20, and said guide chamber 40 is an asymmetric article B (as shown in Figure 4) that extrudes with ingot A (not illustrating) final molding.
Please refer to shown in Figure 3ly, the aluminium alloy 7,000 serial ingot A of said cylindricality become the said asymmetric article B that extrudes through output after the said press molds.Below the situation of rough explanation ingot A shunting in mould, welding and moulding:
At first, before said ingot A did not get into mould as yet, the section that presents said ingot A was a circle.
Then, when said ingot A be stressed push said 4 pan feeding windows 11 after, split into four gangs of ingot A by said pan feeding window 11, per share ingot A demonstrates identical fan-shaped of section with said pan feeding window 11.
Follow, when said ingot A got into said seam chamber 30, said four gangs of ingot A were combined into an ingot A by the pressing welding again, and this moment, the profile of said ingot A was consistent with said seam chamber 30.
Follow, when said ingot A got into said guide chamber 40, the peripheral shape of said ingot A was identical with the wall of the moulding external mold portion 22 of said master mold 20 again, and it is identical with the moulding internal mold portion 14 of said male model 10 to enclose shape in the said ingot A.Therefore, behind said guide chamber 40, said ingot A further forms the said asymmetric article B that extrudes, and is outwards exported by the bottom of said mould.
More than disclose the asymmetric goods press molds of the high-strength aluminum alloy that utilizes preferred embodiment of the present invention and made the asymmetric forming process that extrudes article; In this special instruction be: the design of high-strength aluminum alloy of the present invention (for example 7,000 series) press molds is different with general aluminium alloy (for example 6,000 series) press molds design; Compared to the design of commonly using press molds is to extrude speed so that production capacity increases towards increase; Therefore and be not suitable for extruding of 7,000 serial high-strength aluminum alloy materials therefore but also can't produce bigger pressing pressure.Yet the design of press molds of the present invention does not focus on the speed of production, but hopes and can produce bigger pressing pressure in said welding position, so that the said welding aluminum alloy that is difficult for can be by pressing.Here alleged pressing is so-called metal diffusion bond (Diffusion Bonding); Be metal is jumped between double layer of metal with atom between the metal (homogeneity metal or dissimilar metal) and to engage; It need not use scolder, just can engage homogeneity or heterogeneous metal.
In press molds, so the inside of mould needs to bear bigger pressure high-strength aluminum alloy by bigger seam pressure enable application.Owing to the corresponding board of mould has fixing height, but in the die design method of commonly using, each position height (thickness) of mould is many to be obtained by empirical value, but the asymmetric goods press molds of high-strength aluminum alloy can't be continued to use these empirical values.The formula of apply materials mechanics of the present invention and empirical value or the analogue value; Under the constant prerequisite of mould total length; To ask for the best design load of each position height (thickness) of a mould, make said mould enough intensity arranged to be applicable to the processing procedure that extrudes of high-strength aluminum alloy.
Please refer to Fig. 1 to shown in Figure 5, Fig. 5 discloses the method for designing flow chart of the asymmetric goods press molds of high-strength aluminum alloy of preferred embodiment of the present invention.The method for designing flow process of the asymmetric goods press molds of high-strength aluminum alloy of the present invention comprises:
Step 1 (S1): the total height of decision mould;
Step 2 (S2): the simply supported beam desired height that calculates master mold;
Step 3 (S3): calculate seam chamber desired height;
Step 4 (S4): the bridge part desired height that calculates male model; And
Step 5 (S5): the height of the bridge part of simply supported beam, seam chamber and the male model of decision master mold.
Above method for designing is progressively explained as follows:
Therefore step 1 (S1): press molds generally has fixing size height in response to board, and the board and the material that need decision earlier to use are with the definite value h0 of the total height of decision mould.For example, use 800T (ton) board in the preferred embodiment of the present invention, material is 7075 aluminium alloys, 5 inch ingots, the definite value h0 of the total height of mould.
Step 2 (S2): by the formula of the mechanics of materials, for example τ (shear stress)=F (stressed)/A (simply supported beam sectional area) calculates simply supported beam 23 desired heights and is at least h1, and wherein simply supported beam 23 desired heights are estimated to bearing the maximum stress part in the master mold 20.
Step 3 (S3): ask for said seam chamber 30 desired heights by empirical value or mould flow field simulation software; Need to prove especially; High-strength aluminum alloy needs bigger seam chamber 30 pressure ability seam, and the height h2 that therefore needs higher seam chamber 30 usually is to provide bigger seam pressure.The height that has comprised the first seam chamber 13 and the second seam chamber 21 at this height of seam chamber 30.
Step 4 (S4): for example, bridge part 12 desired heights of calculating male model by formula τ (shear stress)=F (the stressed)/A (bridge part sectional area) of the mechanics of materials are at least h3.
Step 5 (S5): do an adjustment and draw the optimal design value of the last height of each of mould by the bridge part 12 desired height h3 of definite value h0, simply supported beam desired height h1, seam chamber 30 desired height h2 and the male model of the total height of mould.
Asymmetric goods press molds design compared to commonly using high-strength aluminum alloy is difficult for, and executes repeatedly according to experience fully in the past and does and correction, expends time in and money.The method for designing of the asymmetric goods press molds of high-strength aluminum alloy of the present invention; The formula of its apply materials mechanics and empirical value or the analogue value; Under the constant prerequisite of mould total length,, make said mould enough intensity arranged to be applicable to the processing procedure that extrudes of high-strength aluminum alloy to ask for the best design load of each position height of a mould; Enable effectively to promote pressing pressure and welding quality, overcome the shortcoming that the asymmetric goods press molds of high-strength aluminum alloy is difficult for design.
Moreover; The present invention tries to achieve the best design load of height at each position according to said method; Can be further the structure of the thin portion of said master mold 20 and said seam chamber 30 be done an improvement; So that the asymmetric goods press molds of said high-strength aluminum alloy provides enough seam pressure, and makes the flow velocity uniformity of material, to improve the quality of finished product.
Please be simultaneously with reference to shown in figure 1 and Fig. 2 B; The seam chamber structure of the second seam chamber, 21 formed non-complete symmetries of first seam chamber 13 of said male model 10 and said master mold 20; Here so-called non-complete symmetry refer to non-reach up and down about the shape of symmetry simultaneously; In other words, it possibly be up and down symmetry and the asymmetric shape in the left and right sides, or all asymmetric irregularly shaped about reaching up and down.
In detail, the present invention does not limit the concrete shape of said seam chamber 30 structures, and the mould designer can use according to actual needs and adjustment.Because the shape of finished product B is not a symmetry and balanced in the asymmetric goods press molds, therefore mould inside produces under the situation of huge pressure in the process of extruding, and is appreciated that its material in each position of same mold height, and flow velocity maybe be very uneven.Produce vibration in the time of so will causing material to leave said press molds, can't stable state extrude, finally cause the quality of said finished product B bad.
Therefore, said seam of the present invention chamber 30 structure can make the mould designer according to actual conditions it is located at said seam chamber 30 and be designed to the not exclusively shape of symmetry, and said seam chamber 30 structures and the said asymmetric profile that extrudes goods B are corresponding design.The resistance that when material flows through, produces can improve the seam pressure of seam chamber 30 first, can make the flow velocity uniformity of material simultaneously, to improve the quality of finished product B.
For example; Said asymmetric when extruding goods B when desiring to extrude; The said mould central authorities that flow through of the said asymmetric preferable about one-tenth level of a diagonal that extrudes goods B; And the non-complete symmetric profile of said seam chamber 30 structure is also corresponding with the said asymmetric profile that extrudes goods B, and about one-tenth level be located at said mould central authorities.So, though the profile of goods B is asymmetric, after the 30 corresponding shape adjustment of said seam chamber, can make the flow velocity uniformity of material, to improve quality of finished.
Make compared to commonly using the mode that high-strength aluminum alloy is not easy for extruding, more be not easy for asymmetric goods press molds.The present invention is by seam chamber 30 structures of the second seam chamber, 21 formed non-complete symmetries of the first seam chamber 13 of said male model 10 and said master mold 20; Enough seam pressure makes said seam chamber 30 except can be provided; And can make the flow velocity uniformity of material, to improve quality of finished.
Please more simultaneously with reference to shown in figure 3 and Fig. 3 A, Fig. 3 A discloses the sectional view of the part amplification of Fig. 3.Shown in Fig. 3 A, the wall of the moulding external mold portion 22 of the master mold 20 of the said guide of said formation chamber 40 is provided with at least one choked flow projection 22a.Said at least one choked flow projection 22a one has the projection of resistance flowing effect, its preferable formation one inclined plane shape or stepped.When it formed an inclined plane shape, its inclined-plane can be 30 degree to obtain resistance flowing effect preferably.
In detail, the present invention does not limit form, position and the quantity of said choked flow projection 22a.The mould designer can use according to actual needs and adjustment.Because the shape of finished product B is not a symmetry and balanced in the asymmetric goods press molds; Though possibly in said seam chamber 30, do a profile correction; Yet mould inside produces under the situation of huge pressure in the process of extruding; Be appreciated that its material in each position of same mold height, flow velocity maybe be very uneven.Produce vibration in the time of so will causing material to leave said press molds, can't stable state extrude, finally cause the quality of said finished product B2 bad.
Therefore; The structure of said choked flow projection 22a of the present invention; On the preferable outer side surface (being positioned at the moulding external mold portion 22 of master mold 20) of being located at said guide chamber 40, the resistance that when material flows through, produces can improve seam pressure first; Can make simultaneously the flow velocity uniformity of material, to improve the quality of finished product B.
Yet; In another possible embodiment of the present invention; Other positions that the mould designer also can be arranged at said choked flow projection 22a said mould according to actual needs are to produce close effect, for example: said choked flow projection 22a is arranged on the outer side surface of said seam chamber 30.
In addition, shown in Fig. 3 A, the preferable oblique angle 22b that is provided with of said guide chamber 40 inlets, said oblique angle 22b is preferably 30 degree.But said oblique angle 22b auxiliary material get in the said guide chamber 40.
Make compared to commonly using the mode that high-strength aluminum alloy is not easy for extruding, more be not easy for asymmetric goods press molds.The present invention is provided with at least one choked flow projection 22a by master mold guide chambers 40 20, and high-strength aluminum alloy is extruded in the processing procedure, and enough seam pressure can be provided, and the flow velocity uniformity of material, to improve quality of finished.
The present invention is described by above-mentioned related embodiment, yet the foregoing description is merely the example of embodiment of the present invention.Must be pointed out that disclosed embodiment does not limit scope of the present invention.On the contrary, being contained in the spirit of claims and the modification and impartial setting of scope includes in scope of the present invention.
Claims (10)
1. the method for designing of the asymmetric goods press molds of high-strength aluminum alloy; It is characterized in that: said asymmetric goods press molds is used for the board of an extrusion forming; Import 7,000 series alloys ingots of a cylindricality; To be output into the asymmetric goods that extrude, said press molds comprises through said mould:
One male model; Its main body is cylindricality; The row of its rounded array in upper end is provided with a plurality of fan-shaped pan feeding windows, and forms the bridge part of respective amount between the said pan feeding window, and the main body lower end of said male model is located in one first seam chamber; And be communicated with said pan feeding window, a moulding internal mold portion is convexly set in the below of the said first seam chamber end face;
One master mold; Its main body is the cylindricality of a hollow form; It is fixed in the below of said male model main body; And coat the said male model moulding internal mold portion of protrusion downwards, the first seam chamber of the corresponding said male model of said master mold is provided with one second seam chamber, and the moulding internal mold portion of corresponding said male model is provided with a moulding external mold portion;
One seam chamber is positioned at the downstream of said a plurality of pan feeding windows, comprises the said first seam chamber of being located at said male model and the said second seam chamber of being located at said master mold; And
One guide chamber; Be positioned at the downstream of said seam chamber; The madial wall of said guide chamber is the moulding internal mold portion of said male model, and the lateral wall of said guide chamber is the moulding external mold portion of said master mold, and said guide chamber is the said asymmetric goods that extrude with said ingot final molding;
Wherein, said method for designing comprises:
The total height of decision mould;
Calculate the simply supported beam desired height of master mold;
Calculate seam chamber desired height;
Calculate the bridge part desired height of male model; And
The height of the bridge part of simply supported beam, seam chamber and the male model of decision master mold.
2. the method for designing of the asymmetric goods press molds of high-strength aluminum alloy as claimed in claim 1 is characterized in that: the simply supported beam desired height system of said master mold obtains by the formula of the mechanics of materials; Said seam chamber desired height system is by the empirical value substitution; Said seam chamber desired height system obtains by mould flow field simulation software; The bridge part desired height system of said male model obtains by the formula of the mechanics of materials.
3. the structure of the asymmetric goods press molds of high-strength aluminum alloy; It is characterized in that: said asymmetric goods press molds is used for the board of an extrusion forming; Import 7,000 series alloys ingots of a cylindricality; To be output into the asymmetric goods that extrude, said press molds comprises through said mould:
One male model; Its main body is cylindricality; The row of its rounded array in upper end is provided with a plurality of fan-shaped pan feeding windows, and forms the bridge part of respective amount between the said pan feeding window, and the main body lower end of said male model is located in one first seam chamber; And be communicated with said pan feeding window, a moulding internal mold portion is convexly set in the below of the said first seam chamber end face;
One master mold; Its main body is the cylindricality of a hollow form; It is fixed in the below of said male model main body; And coat the said male model moulding internal mold portion of protrusion downwards, the first seam chamber of the corresponding said male model of said master mold is provided with one second seam chamber, and the moulding internal mold portion of corresponding said male model is provided with a moulding external mold portion;
One seam chamber is positioned at the downstream of said a plurality of pan feeding windows, comprises the said first seam chamber of being located at said male model and the said second seam chamber of being located at said master mold; And
One guide chamber; Be positioned at the downstream of said seam chamber; The madial wall of said guide chamber is the moulding internal mold portion of said male model, and the lateral wall of said guide chamber is the moulding external mold portion of said master mold, and said guide chamber is the said asymmetric goods that extrude with said ingot final molding;
Wherein, the formed said seam chamber, the second seam chamber of first seam chamber of said male model and said master mold is the seam chamber structure of a non-complete symmetry.
4. the structure of the asymmetric goods press molds of high-strength aluminum alloy as claimed in claim 3 is characterized in that: the non-complete symmetry of said seam chamber structure is corresponding with the said asymmetric profile that extrudes goods.
5. the structure of the asymmetric goods press molds of high-strength aluminum alloy as claimed in claim 3 is characterized in that: the said mould central authorities that flow through of the said asymmetric about one-tenth level of a diagonal that extrudes goods.
6. the structure of the asymmetric goods press molds of high-strength aluminum alloy as claimed in claim 3 is characterized in that: the non-complete symmetric profile of said seam chamber structure is a left-right symmetric.
7. the structure of the asymmetric goods press molds of high-strength aluminum alloy as claimed in claim 3; It is characterized in that: the structure of the asymmetric goods press molds of said high-strength aluminum alloy comprises at least one choked flow projection in addition, is located on the wall of moulding external mold portion of master mold of said guide chamber.
8. the structure of the asymmetric goods press molds of high-strength aluminum alloy as claimed in claim 7 is characterized in that: said at least one choked flow projection is an inclined plane shape choked flow projection or a stepped choked flow projection.
9. the structure of the asymmetric goods press molds of high-strength aluminum alloy as claimed in claim 7 is characterized in that: said guide chamber inlet is provided with the oblique angle.
10. the structure of the asymmetric goods press molds of high-strength aluminum alloy as claimed in claim 7 is characterized in that: said at least one choked flow projection is located on the outer side surface of said seam chamber.
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| CN110691858B (en) * | 2017-06-07 | 2021-10-29 | 株式会社Uacj | Hollow aluminum alloy tubular profile and piping material for heat exchanger |
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