CN103599955A - Structure of mold of large-scale flat wide thin-walled section bar, and manufacturing method of the mold - Google Patents
Structure of mold of large-scale flat wide thin-walled section bar, and manufacturing method of the mold Download PDFInfo
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- CN103599955A CN103599955A CN201310432958.3A CN201310432958A CN103599955A CN 103599955 A CN103599955 A CN 103599955A CN 201310432958 A CN201310432958 A CN 201310432958A CN 103599955 A CN103599955 A CN 103599955A
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Abstract
The invention discloses a structure of a mold of a large-scale flat wide thin-walled section bar, and a manufacturing method of the mold. The mold comprises an upper mold and a lower mold. The middle part of the upper mold is provided with two suspension bridges to form three flow splitting holes. Arrangement of the flow splitting holes is geometrically similar to the shape of the section bar. The two flow splitting holes at the two sides extend outside to form two-stage spread. The angles of the two-stage spread are respectively 25 degrees and 5 degrees. The depth of a welding room of the lower mold is 40 mm. A high-quality 4Cr5MoSiV1 hot work mold is preferably selected as the material of the mold. The mold is subjected to high-temperature quenching and tempering so that the hardness value of the mold reaches 48-49 HRC. By utilization of a two-stage gas nitriding technology for processing, the surface hardness value of the mold is HV950-1150 and the thickness of a nitration layer is 100-160 [mu]m. The structure of the mold is simple and reasonable. Sectionalized spread and porthole dies, which are formed by the upper mold and the lower mold, are adopted, thus improving the welding quality in processing steps of the section bar, improving the quality of the flat wide thin-walled section bar, prolonging the service lifetime of the mold, and reducing the production cost of the section bar.
Description
Technical field
The present invention relates to a kind of processing mold and processing technology of structural shape, be specifically related to mould structure and the manufacture method thereof of the wide thin-wall section of Large Flat.
Background technology
Green building aluminium alloy structure extrudate kind reaches over one hundred kind, and specification limit is wide, existing green building directly comes to be used in conjunction with associated part as parts with aluminium alloy structure section bar, and green building aluminium alloy structure extrudate comprises that various special-shaped sections are as hollow profile, solid profile and semi-hollow profile and various special bar; Flat wide thin-wall section belongs to the highly difficult solid profile that flakiness ratio is greater than 100, take WYY1237 section bar as example as shown in Figure 1, designing requirement and the difficulty of this flat wide thin-wall section are as follows:
(1) alloy state of WYY1237 section bar is 6061FT6, squeeze wood need be made through accurate water, mist, gas quenching and artificial aging, require size and the accuracy of form and position of section bar to reach superelevation essence level level, and have good mechanical property, wear-resisting, anti-corrosion, the Proper Match that the combination property such as can weld, but existing mold can not reach effect like this.
(2) WYY1237 section bar belongs to flat wide thin-wall section, is characterized in easily occurring serious Wall-Thickness Difference and plane clearance, and section bar both ends of the surface expect that because filling deficiency wall thickness dimension is inadequate, wide, the thickness rate value of WYY1237 section bar up to
and existing plane mould does not reach this type of section bar specification requirement of extruding.
(3) WYY1237 section bar contour dimension is large, must produce at more than 7000 tons large-size extruder, recipient diameter is φ 418mm, section bar width almost with recipient equal diameters, existing mold cannot guarantee section bar shaping and width accuracy and plane clearance, can not realize mass production.
(4) two of WYY1237 section bar supporting legs and wallboard angle are
form and position tolerance value is higher than the high-precision level regulation of GB/T6892-2006, in order to ensure template handling and whole glacing flatness smoothly, need to repeatedly calculate the distribution guarantee angle precision with balance metal flow, thereby increased the difficulty that manufactures and designs of mould.
Summary of the invention
One of object of the present invention be for overcome mould in prior art in batches flakiness ratio be greater than the deficiency of more than 100 highly difficult section bars, the mould structure of the wide thin-wall section of Large Flat is provided, this mould can be realized the production in enormous quantities of section bar, production cost is low, and can improve the quality of flat wide thin-wall section.
Two of object of the present invention is for the mould manufacturing method of the wide thin-wall section of Large Flat is provided, this manufacture method can be produced the flat wide thin-wall section mould of high-quality that high strength, high tenacity, high accuracy and surface roughness are supported efficiently, and the service life that can improve mould.
One of object of the present invention can be achieved through the following technical solutions:
The mould structure of the wide thin-wall section of Large Flat, it is characterized in that: mould employing segmentation is spreaded, diffluence combination die, describedly spread, diffluence combination die consists of upper die and lower die, described patrix middle part arranges two suspension bridges, form three tap holes, the layout of tap hole and profile shapes geometric similarity, metal flow becomes the metal flow similar to profile shapes by circular ingot casting gradually in the process of tap hole, rationally controls metal distribution and regulates flow rate of metal; The tap hole of described both sides outwards becomes two-stage to spread, and the angle that two-stage is spreaded is respectively 25 °, 5 °, to increase metal flow and the pressure at nib place, is convenient to fill; The seam chamber degree of depth of described counterdie is 40mm, thereby the metal that makes to flow has a sufficiently high hydrostatic pressure seam is indoor.
One of object of the present invention can also be achieved through the following technical solutions:
Further scheme of the present invention: the nib front end of described counterdie arranges metal guide conductance groove, metal guide conductance groove is provided with metal drainage guide pin bushing, carries out metal for the first time distribute by profile shapes, improves the forming effect of section bar.
Further scheme of the present invention: described counterdie is also provided with four bridge piers, every two bridge piers form one group of bridge pier, and every group of bridge pier supports a suspension bridge of patrix, with the bulk strength of balance metal flow and raising mould.
Further scheme of the present invention: the split ratio K of the tap hole of described patrix
minute=13.
Further scheme of the present invention: the metal of described patrix enters face place sinking 20mm, can balanced metal flow and reduce extruding force.
Further scheme of the present invention: described seam chamber adopts different in nature shape.
Two of object of the present invention can be achieved through the following technical solutions:
The mould manufacturing method of the wide thin-wall section of Large Flat, is characterized in that:
The material selection 4Cr5MoSiV1 hot die steel of mould;
The blank of mould is made: module is adopted to electroslag remelting steel billet, through forging, annealing, obtain the module that hardness reaches HB229 successively;
Manufacturing and designing of mould: adopt CAD/CAM/CAE fully automatic working method, guarantee each parameter of mould by setting up threedimensional model, design the mould structure of the wide thin-wall section of Large Flat;
The heat treatment of mould: mould, through 1035 ℃ of quench hots, then through 2 tempering, makes die hardness value arrive 48～49HRC;
Die surface strengthening is processed: adopt two-stage gas nitriding technique to process, guarantee that die surface hardness number is at HV950-1150, nitration case thickness 100～160 μ m, improve die life.
Further scheme of the present invention: the manufacturing and designing of described mould, follow law of metal flow when aluminium alloy extruded, reasonable distribution amount of metal and coutroi velocity reduce crush resistance and equilibrium velocity as far as possible.
Further scheme of the present invention: described mold hot is processed through 1035 ℃ of quench hots.
Beneficial effect of the present invention:
1, mould structure of the present invention is simple, reasonable, the segmentation that adopts upper die and lower die to form is spreaded, diffluence combination die, patrix middle part arranges two suspension bridges, two suspension bridges are divided into three tap holes, make commonly to spread moding and become shunting to spread mould, it is similar to profile shapes that tap hole is arranged, in the process of metal flow through spreading tap hole, becomes the metal flow similar to profile shapes gradually by circular ingot casting, rationally controlled metal distribution and with regulated flow rate of metal; The tap hole of both sides outwards becomes two-stage to spread, and spreads metal flow and the pressure that has increased nib places, two ends by two-stage, is convenient to fill; The seam chamber degree of depth of counterdie is 40mm, thereby the metal that makes to flow has a sufficiently high hydrostatic pressure seam is indoor, has guaranteed the quality of seam when fabircated shapes.This mould has improved the quality of flat wide thin-wall section, has reduced the production cost of this section bar.
2, the intensity of corresponding mould, the present invention by counterdie, arrange four bridge piers for the suspension bridge that supports patrix with balance metal flow; Metal is entered to charge level sinking 20mm, metal flow is shortened through route, thereby reduced extruding force, improve the bulk strength of mould, make bring up to 2-3 doubly the service life of mould, realized the batch production of flat wide thin-wall section.
3, the present invention arranges metal guide conductance groove by the nib front end at counterdie, metal guide conductance groove is provided with metal drainage guide pin bushing, by profile shapes, entering the first order spreads tap hole and carries out metal distribution, then enter the second level and spread tap hole and carry out for the second time metal and distribute, improve the forming effect of section bar.
4, the manufacture processing method of mould of the present invention, owing to having selected high-quality mold materials, the mould, manufacturing process of design special construction rationally, heat treatment and surface treatment advanced, shaping and size, the accuracy of form and position and surface quality and the welding quality of product have not only been guaranteed, improved die surface hardness number, thereby improved the service life of mould.
5, the mould of this flat wide thin-wall section is just qualified through 2 die trials, and the amount of repairing a die is all less at every turn, reduces the non-cutting time of extrusion process of production.The product that adopts this mould to produce has good mechanical property, wear-resisting, anti-corrosion, the flat wide thin-wall section that can weld, dimensional accuracy and the accuracy of form and position are more stable, tissue and the performance of product are better, guaranteed that this section bar is shaped and the angular accuracy of overall width precision and plane clearance and supporting leg and wallboard angle, can meet the industrialization of green building structure, distributed material, the requirement of production in enormous quantities.
Accompanying drawing explanation
Fig. 1 is the structural representation of the wide thin-wall section of Large Flat.
Fig. 2 is the structural representation of patrix in the specific embodiment of the invention 1.
Fig. 3 is the cutaway view of B-B in Fig. 2.
Fig. 4 is the structural representation of counterdie in the specific embodiment of the invention 1.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Specific embodiment 1:
The mould structure of the wide thin-wall section of Large Flat as shown in Figure 2, Figure 3 and Figure 4, mould employing segmentation is spreaded, diffluence combination die, describedly spread, diffluence combination die consists of patrix 1 and counterdie 2, described patrix 1 middle part is provided with two suspension bridge 1-1, the width 7mm of suspension bridge 1-1, described suspension bridge 1-1 is the shunting bridge of shunting use in existing mold field, forms three tap hole 1-2, the split ratio K of the tap hole 1-2 of patrix
minute=13, the layout of tap hole 1-2 and profile shapes geometric similarity, metal flow becomes the metal flow similar to profile shapes by circular ingot casting gradually in the process of tap hole 1-2, has rationally controlled metal distribution and has regulated flow rate of metal.The tap hole 1-1 of both sides outwards becomes two-stage to spread, and the angle that two-stage is spreaded is respectively 25 °, 5 °, and the absolute spread of both sides is respectively 40mm, to increase metal flow and the pressure at nib 2-2 place, is convenient to fill.The metal at two suspension bridge 1-1 places of described patrix 1 enters charge level 1-3 place's sinking 20mm, can balanced metal flow and reduce extruding force.
The seam chamber 2-3 degree of depth of described counterdie 2 is 40mm, and described seam chamber 2-3 adopts different in nature shape, thereby the metal that makes to flow has sufficiently high hydrostatic pressure in the 2-3 of seam chamber.The nib 2-2 front end of described counterdie 2 arranges metal guide conductance groove, and described metal guide conductance groove is provided with metal drainage guide pin bushing 2-1, carries out metal for the first time distribute by profile shapes, improves the forming effect of section bar.Counterdie 2 is also provided with four bridge piers, and every two bridge piers form one group of bridge pier, and every group of bridge pier supports a suspension bridge 1-1 of patrix 1, with the bulk strength of balance metal flow and raising mould.This patrix 1 and counterdie 2 also have other basic structural features of existing upper die and lower die, because event same as the prior art is in this omission.
The mould manufacturing method of the wide thin-wall section of Large Flat,
The material selection high-quality 4Cr5MoSiV1 hot die steel of mould;
The blank of mould is made: module is adopted to electroslag remelting steel billet, through forging, annealing, obtain the module that hardness reaches HB229 successively;
Manufacturing and designing of mould: when manufacturing and designing extrusion die, must strictly follow law of metal flow when aluminium alloy extruded, design unique construction mould reasonable distribution amount of metal and coutroi velocity reduce crush resistance and equilibrium velocity as far as possible; Adopt CAD/CAM/CAE fully automatic working method to realize full-automatic production, by setting up threedimensional model, guarantee each parameter of mould, design the mould structure of the wide thin-wall section of Large Flat; Adopt domestic and international state-of-the-art equipments machining die, the modernization lathes such as numerically controlled lathe, CNC milling machine, CNC machining center, numerically controlled discharge machine, numerical controlled engraving and milling device, low speed wire cutting machine, in the overall process of Mold Making, realize CAD/CAM/CAE and automatically processed, can guarantee Mould Machining quality;
The heat treatment of mould: mould, through 1035 ℃ of quench hots, then through 2 tempering, makes die hardness value arrive 48～49HRC;
Die surface strengthening is processed: adopt two-stage gas nitriding technique to process, guarantee that die surface hardness number is at HV950-1150, nitration case thickness 100～160 μ m, improve die life.
Other basic steps that also comprise existing mold processing in this die processing method, the step of processing because of existing mold belongs to prior art, therefore in this omission.
This mould is for the manufacture of the wide thin-wall section of WY1237 Large Flat, and this section bar has the different wall thickness in three places, is expressed as section bar wall thickness
1, section bar wall thickness
2, section bar wall thickness
3, the extrusion ratio λ of this mould, metal range degree ε, metal split ratio K
minute, seam chamber degree of depth h
welderingdeng each design parameter value, pass through strict calculating, value all meets the specification requirement of aluminium alloy extruded flat wide thin-walled material, with this, guarantees the quality of extruded product.
The Design of Dies of the flat wide thin-wall section of this WY1237 according to parameter this die design schemes parameter as shown in table 1 as table 2, this die size and specification requirement are as shown in table 3, the mould finished product parameter of making is as shown in table 4, and the detection statistics of this mould after twice die trial is as shown in table 5.
Due to the mould of the flat wide thin-wall section of WY1237, having selected high-quality 4Cr5MoSiV1 hot die steel is material, and implemented advanced heat treating regime, through quench hot and 2 tempering, make die hardness value arrive 48～49HRC, die surface is carried out to intensive treatment, improved die surface hardness number; Overall process all adopts CAD/CAM/CAE fully-automatic production, by adopting fully automatic working method, has improved the machining accuracy of mould, has guaranteed the mechanical property of extruded product.Every mold all has very high workmanship, and section bar extruding factory strictly follows mould land use reform, and therefore, this mould die trial 2 times is just qualified, and the amount of repairing a die is smaller, and service life is higher, and the project that reached improves 2-3 target doubly.
Adopt the operation principle of the flat wide thin-wall section mould of Mould Machining WY1237 of the present invention: adopt φ 418mm recipient, under the effect of the extruding force of recipient, the shunting of circle ingot casting by tap hole, spread, become gradually similar to the shape of flat wide thin-wall section, the circumscribed circle diameter of seam chamber reaches 410mm, the seam chamber degree of depth is got 40mm, and the metal that is enough to make flow forms high hydrostatic pressure in seam chamber, guarantees the welding quality of tubing.Metal enters face place sinking 20mm and has not only guaranteed mechanical property but also can improve welding quality, spreads before nib metal guide conductance groove is set, and carries out metal for the first time distribute by profile shapes, enhances productivity and finished product rate, has reduced production cost.
The Design of Dies of table 1:WY1237 section bar is according to parameter
The die design schemes parameter of table 2:WYY1237 section bar
Design of Dies size and the specification requirement of table 3:WYY1237 section bar
The mould finishing die detection record of table 4:WYY1237 section bar
The profile size detection record of the mould of table 5:WYY1237 section bar after the 1st, 2 die trials
Specific embodiment 2:
The feature of the present embodiment is: in the manufacture method of mould, described mould is through 1000 ℃ of quench hots, and other features are identical with specific embodiment 1.
Specific embodiment 3:
The feature of the present embodiment is: in the manufacture method of mould, described mould is through 1035 ℃ of quench hots, and other features are identical with specific embodiment 1.
Claims (9)
1. the mould structure of the wide thin-wall section of Large Flat, it is characterized in that: described mould employing segmentation is spreaded, diffluence combination die, describedly spread, diffluence combination die consists of patrix (1) and counterdie (2), described patrix (1) middle part arranges two suspension bridges (1-1), be divided into three tap holes (1-2), the layout of tap hole (1-2) and profile shapes geometric similarity, metal flow becomes the metal flow similar to profile shapes by circular ingot casting gradually in the process of tap hole (1-2), rationally controls metal distribution and regulates flow rate of metal; Described tap hole (1-1) outwards becomes two-stage to spread, and the angle that two-stage is spreaded is respectively 25 °, 5 °, and metal flow and the pressure to increase nib (2-2), located are convenient to fill; Seam chamber (2-3) degree of depth of described counterdie (2) is 40mm, thereby the metal that makes to flow has sufficiently high hydrostatic pressure in seam chamber (2-3).
2. the mould structure of the wide thin-wall section of Large Flat according to claim 1, it is characterized in that: nib (2-2) front end of described counterdie (2) arranges metal guide conductance groove, described metal guide conductance groove is provided with metal drainage guide pin bushing (2-1), by profile shapes, carry out metal for the first time and distribute, improve the forming effect of section bar.
3. the mould structure of the wide thin-wall section of Large Flat according to claim 1, it is characterized in that: described counterdie (2) is also provided with four bridge piers, every two bridge piers form one group of bridge pier, every group of bridge pier supports a suspension bridge (1-1) of patrix (1), with the bulk strength of balance metal flow and raising mould.
4. the mould structure of the wide thin-wall section of Large Flat according to claim 1, is characterized in that: the split ratio K of the tap hole (1-2) of described patrix (1)
minute=13.
5. the mould structure of the wide thin-wall section of Large Flat according to claim 1, is characterized in that: the metal of described patrix (1) enters charge level (1-3) and locates 20mm, can balanced metal flow and reduce extruding force.
6. the mould structure of the wide thin-wall section of Large Flat according to claim 1, is characterized in that: described seam chamber (2-3) adopts different in nature shape.
7. the mould manufacturing method of the wide thin-wall section of Large Flat, is characterized in that:
The material selection 4Cr5MoSiV1 hot die steel of mould;
The crude green body of mould is made: module is adopted to electroslag remelting steel billet, through forging, annealing, obtain the module that hardness reaches HB229 successively;
Manufacturing and designing of mould: adopt CAD/CAM/CAE fully automatic working method, guarantee each parameter of mould by setting up threedimensional model, design the mould structure of the wide thin-wall section of Large Flat;
The heat treatment of mould: mould, through 1035 ℃ of quench hots, then through 2 tempering, makes die hardness value arrive 48～49HRC;
Die surface strengthening is processed: adopt two-stage gas nitriding technique to process, guarantee that die surface hardness number is at HV950-1150, nitration case thickness 100～160 μ m, improve die life.
8. the mould manufacturing method of the wide thin-wall section of Large Flat according to claim 7, it is characterized in that: the manufacturing and designing of described mould, follow law of metal flow when aluminium alloy extruded, reasonable distribution amount of metal and coutroi velocity reduce crush resistance and equilibrium velocity as far as possible.
9. the mould manufacturing method of the wide thin-wall section of Large Flat according to claim 7, is characterized in that: described mold hot is processed through 1035 ℃ of quench hots.
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| CN201310432958.3A CN103599955B (en) | 2013-09-22 | 2013-09-22 | It is a kind of for alloy state for 6061FT6 Large Flat width thin-wall section mould structure |
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| CN201310432958.3A CN103599955B (en) | 2013-09-22 | 2013-09-22 | It is a kind of for alloy state for 6061FT6 Large Flat width thin-wall section mould structure |
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| CN112210682A (en) * | 2020-10-09 | 2021-01-12 | 美图（福建）铝业有限公司 | Manufacturing method and die of industrial ultra-high aluminum alloy profile with width-thickness ratio |
| CN112322879A (en) * | 2020-10-09 | 2021-02-05 | 美图（福建）铝业有限公司 | Manufacturing method and die for high-strength large-section aluminum alloy template profile |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105251800A (en) * | 2015-11-27 | 2016-01-20 | 浙江中质合金材料有限公司 | Method for processing hard alloy twin-screw-hole rod extrusion die |
| CN109013737A (en) * | 2018-10-16 | 2018-12-18 | 辽宁忠旺集团有限公司 | A kind of extrusion die of the big wide cut of track vehicle body skirtboard than thin-wall section |
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| CN112210682A (en) * | 2020-10-09 | 2021-01-12 | 美图（福建）铝业有限公司 | Manufacturing method and die of industrial ultra-high aluminum alloy profile with width-thickness ratio |
| CN112322879A (en) * | 2020-10-09 | 2021-02-05 | 美图（福建）铝业有限公司 | Manufacturing method and die for high-strength large-section aluminum alloy template profile |
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| Publication number | Publication date |
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| CN103599955B (en) | 2017-04-05 |
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