CN110722011B - 7 hard alloy row material extrusion die - Google Patents
7 hard alloy row material extrusion die Download PDFInfo
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- CN110722011B CN110722011B CN201911171789.6A CN201911171789A CN110722011B CN 110722011 B CN110722011 B CN 110722011B CN 201911171789 A CN201911171789 A CN 201911171789A CN 110722011 B CN110722011 B CN 110722011B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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Abstract
The invention discloses a 7-series hard alloy discharging extrusion die which comprises a feeding port, wherein the feeding port comprises a middle feeding part and a side feeding part; the side feeding parts are symmetrically arranged at two sides of the middle feeding part to form a butterfly shape, and the die disclosed by the invention can be used for ensuring aluminum supply at the edge part and reducing the phenomenon that the edge part is unqualified in size.
Description
Technical Field
The invention relates to the technical field of aluminum alloy casting, in particular to a 7-series hard alloy row material extrusion die.
Background
Aluminum extrusion molding is a plastic processing method for obtaining parts or semi-finished products with required section shape and size and certain mechanical property by applying strong pressure on metal blanks placed in a mold cavity (or an extrusion container) to force the metal blanks to generate directional plastic deformation and extruding the metal blanks from a die hole of an extrusion mold.
The 7-series aluminum alloy has high strength and high ductility, and is widely used in the field of aerospace and high-end electronic products, but the 7-series aluminum alloy is hard and poor in fluidity, so that an extruded product is easy to form bridge bending or cracks.
In order to reduce the later-stage processing amount of the current 7-series row materials, a die feeding port is in a bone shape, as shown in fig. 1, the middle and two sides of the die feeding port are in oblique angle transition, a pocket is designed on the vertical end face of the feeding port, a working belt is longer, 4-angle rounded corners are formed, the rounded corners are smaller and smaller, generally R2, the tolerance is +/-0.5, the rounded corners are reduced, the temperature of the rounded corners is increased rapidly in the extrusion process, the product speed of the 7-series row material die in a 75MN \110MN forward single-action short-stroke aluminum extrusion machine in the production process is 0.6m/min, the length of the head and the tail is between 3.5 m and 4.5m, the feeding port of the shape generally has insufficient aluminum supply at the edge part, the 4-angle collapse of the row material edge part, the unqualified edge part size and the clearance between the upper plane and the lower plane are out of tolerance, and the temperature of the row material 4-angle in the extrusion process is too fast, it is also necessary to cut off the longer log heads and tails.
Disclosure of Invention
The invention discloses a 7-series hard alloy row material extrusion die which is beneficial to ensuring aluminum supply at the edge part, reducing the phenomenon that the edge part is unqualified in size and simultaneously reducing the probability of bridge type bending.
A7-series hard alloy discharging extrusion die comprises a feeding port, wherein the feeding port comprises a middle feeding part and a side feeding part;
the side feeding portions are symmetrically arranged on two sides of the middle feeding portion to form a butterfly shape, the outer side edge lines of the side feeding portions are arc-shaped, and the area of the upper portion, separated by the central extension line of the middle feeding portion, of the upper portion is smaller than that of the lower portion.
Furthermore, the inner side edge line of the side feeding part is perpendicular to the middle feeding part, and the joint of the inner side edge line and the middle feeding part is rounded.
Furthermore, the multistage oblique angle of side pan feeding portion passes through to middle pan feeding portion, and outside-in inclination reduces gradually.
Further, side pan feeding portion includes the arc curved surface unit in the outside and the inboard linkage unit, arc curved surface unit is provided with the two-stage oblique angle at least at the interval, and the oblique angle that is in the outside is greater than the oblique angle that is in the inboard.
Further, the oblique angle that the arc curved surface unit set up includes one-level oblique angle and second grade oblique angle, and the one-level oblique angle is 20~30, and the second grade oblique angle is 10~ 15.
Furthermore, the outer ends of the two sides of the middle feeding portion are provided with shunting ribs, and the shunting ribs extend to the outer side edge lines of the side feeding portion and are in the shape of upper and lower bulges.
Furthermore, a pocket is arranged on the upper side of the middle feeding part, the depth of the pocket ranges from 8mm to 13mm, and the width of the pocket ranges from 10 mm to 15 mm.
Furthermore, the length of the middle area of the working belt connected with the rear side of the feeding port is greater than the lengths of the two end areas, the inlet side of the working belt connected with the feeding port is in smooth transition from the middle area to the two end areas, the length of the middle area is greater than the lengths of the two end areas by 3-8 mm, and the width of the middle area is 50-70% of the width of the working belt.
Further, the upper side and the lower side of the middle feeding part are connected to the working belt through a blocking angle, and the blocking angle is 3-6 degrees.
Further, the working belt is transited to a first-stage rear blank cutter through an oblique angle.
Above 7 be hard alloy and arrange material extrusion die, material portion both ends symmetry sets up side pan feeding portion in middle pan feeding portion both sides, form butterfly form, the area that limit portion supplied aluminium has been increased, thereby the feeding volume that limit portion supplied aluminium has been forced to have improved, reduce the unqualified phenomenon of limit portion size, and side pan feeding portion is less than the regional area in lower part by the regional area in middle pan feeding portion central extension line divided upper portion, thereby make the lower part feeding more abundant, offset the deflection that the focus sinks and arouse, the crooked probability of bridge type appears in the reduction.
By improving the condition of supplying aluminum to the edge part, the temperature rise of the corner is consistent with the temperature of the middle part in the extrusion process, so that the speed of a product is moderately improved, the dead zone of the edge part is small, and the cut-off parts of the head part and the tail part of the material arrangement are reduced, therefore, the production efficiency and the yield can be effectively improved, and the production cost is reduced.
The 7-series hard alloy row material extrusion die can improve the speed of a product to 1.0m/min, reduce the length of a head and a tail to 3m, does not need pre-deformation, and can ensure the stability of the head, the middle and the tail of the row material.
Drawings
Fig. 1 is a schematic plan view of a bone-shaped inlet.
FIG. 2 is a schematic plan view of the inlet of the present invention.
Fig. 3 is a schematic perspective view of the present invention.
FIG. 4 is a schematic perspective view of the middle feeding portion of FIG. 3 taken along the centerline thereof.
The side feeding device comprises a side feeding portion 1, an arc-shaped curved surface unit 101, an outer side edge line 102 of the side feeding portion, a connecting unit 103, an inner side edge line 104 of the side feeding portion, a first-level oblique angle 105, a second-level oblique angle 106, a flow dividing rib 2, a middle feeding portion 3, a pocket 4, a working tape 5 and a first-level rear blank knife 6.
Detailed Description
The present invention is further illustrated by the following examples, but the scope of the present invention is not limited to the following examples.
A7-series hard alloy discharging extrusion die comprises a feeding port, wherein the feeding port comprises a middle feeding part 3 and a side feeding part 1; the side pan feeding portion 1 symmetry sets up and forms butterfly form in middle pan feeding portion 3 both sides, combine fig. 2 and 3 to show, middle pan feeding portion 3 is the strip, the side pan feeding portion 1 of both sides is the butterfly wing form of symmetry, relative middle pan feeding portion 3 is symmetrical as the vertical central line shown in fig. 1, the outside margin line 102 of side pan feeding portion 1 is the arc to match the shape of recipient, and the regional area of upper portion separated by 3 central extension lines of middle pan feeding portion is less than the regional area of lower part, here the partition, only virtual partition, the upper portion region and the lower part region of side pan feeding portion 1 are as an organic whole. Through setting up great side pan feeding portion 1 of area, increased the area that limit portion supplied aluminium to force to improve the feeding volume that limit portion supplied aluminium, reduce the unqualified phenomenon of limit portion size, and the regional area in the upper portion of limit pan feeding portion central extension line divided is less than the regional area in lower part, thereby makes the feeding of side lower part more abundant, and the focus sinks, reduces the crooked probability of bridge type that appears.
Further, the inside edge line 104 of side pan feeding portion is perpendicular with middle pan feeding portion 3, and junction radius angle, and the straight line setting through the inside edge line 104 of side pan feeding portion can guarantee that limit portion supplies aluminium evenly, and junction radius angle can prevent the feeding blind spot, reduces the possibility of crackle.
Furthermore, the side feeding part 1 is transited to the middle feeding part 3 through a plurality of oblique angles, and the inclination is gradually reduced from outside to inside.
Further, as shown in fig. 4, the side feeding portion 1 includes an arc-shaped curved surface unit 101 and an inner connecting unit 103, the inner connecting unit 103 is a gentle slope with respect to the arc-shaped curved surface unit 101, the arc-shaped curved surface unit 101 is provided with two levels of oblique angles at least at intervals, the oblique angle at the outer side is greater than the oblique angle at the inner side, the flow speed of the aluminum melt is gradually slowed down, the conditions that the aluminum melt enters the side portion at an excessively high speed to cause dead angles, the deformation is severe, and the possibility of cracks at two sides is reduced. Furthermore, the bevel angles of the curved surface unit 101 include a first bevel 105 and a second bevel 106, the first bevel 105 and the second bevel 106 have a certain gap, the first bevel 105 is 20-30 °, the second bevel 106 is 10-15 °, wherein the first bevel 105 is 25 ° and the second bevel is 15 ° are the most preferable, and thus, the entering speed of the aluminum melt at the edge is the most suitable. The side feeding part 1 comprises various surfaces in the annular direction, and the various surfaces are connected in a fillet mode, so that the phenomena of aluminum leakage, cracks and the like caused by dead angles are avoided.
Further, the outer ends of the two sides of the middle feeding portion 3 are provided with shunting ribs 2, and the shunting ribs 2 extend to the outer side edge lines 102 of the side feeding portion and are in a shape with two convex sides. The bulges on the two sides are symmetrically arranged, the transverse central line of the middle feeding part 3 in the figure 1 is taken as a symmetry axis, the arrangement mode is better, and the quantity of aluminum melt entering the middle of the edge part can be reduced due to the bulges on the two sides, so that the aluminum supply quantity of the upper corner and the lower corner of the edge part is more sufficient, the problem of overlarge dead zone of the edge part is prevented, and the size of the edge part of the profile discharge is ensured to be qualified.
Furthermore, a pocket 4 is arranged on the upper side of the middle feeding part 3, the pocket is a groove formed in the upper surface of the middle feeding part 3, the depth of the pocket 4 is 8-13 mm, the width of the pocket is 10-15 mm, the width is generally larger than the depth, the depth refers to the depth of the concave groove, namely the size extending along the longitudinal direction in fig. 2, and the width refers to the distance between the upper edge and the lower edge of the bottom surface of the groove along the vertical direction in fig. 2. Set up the pocket, can slow down the frictional force to the aluminium melt body that gets into 3 upsides of middle pan feeding portion, promote the feed rate of 3 upsides of middle pan feeding portion to upper portion feeding is more abundant in the middle of the feasible feed inlet, and the regional area in upper portion that combines the side is less than the regional area in lower part together, reduces the crooked probability of bridge type that appears.
Generally speaking, feed rate is greater than the feed rate of both sides in the middle of the pan feeding mouth during the feeding, for the aluminium flow velocity of balanced middle and side, 3 upsides of middle pan feeding portion and downside all are connected to the working tape through hindering the angle, have all set up the slope on middle pan feeding portion 3 is whole transversely promptly, should hinder the angle and be 3~6 contained angles with vertical direction, and for outside-in slope, through increase frictional force, reach the purpose that slows down 3 feed rates of middle pan feeding portion.
Further, the length of the middle area of the working belt 5 is larger than the length of the two end areas, the inlet side of the working belt connected with the feeding port is in smooth transition from the middle area to the two end areas, the length of the middle area is larger than the length of the two end areas by 3-8 mm, the width of the middle area is 50-70% of the width of the working belt, the length is the size along the longitudinal extension direction of the drawing 1, the width is the size along the transverse direction of the drawing 1, the friction force is larger because the length of the middle area is longer, and the friction force is gradually reduced from the middle to the two sides, so that the aluminum feeding speed of the edge part is higher, the sufficient aluminum supply of the edge part is ensured, and the qualified size of the edge part of the profile discharging material is ensured.
Further, the working tape passes through oblique angle transition to one-level back air knife 6, through the oblique angle can be better to the working tape formation triangular supports, because the working tape has decided the shaping of arranging material width and thickness, the size that the material was arranged in the assurance that the stability of working tape could be better meets the requirements.
Adopt the mould of this embodiment, compare with prior art's bone form pan feeding mouth, have following advantage:
1. the speed of the product is increased from 0.6m/min to 1.0m/min, and the speed is increased by 66.7%.
2. The length of the head and tail is reduced from 4.5m to 3m, and the length is reduced by 33.3%.
3. The size and the plane clearance are originally ensured by the predeformation of the working band, the invention does not need predeformation and ensures the stability of the head, the middle and the tail of the wood discharging in each stage.
The invention has applied 9 different specifications of the row material, respectively (width x thickness): 250x22, 310x26, 357x28, 305x28, 285x28, 370x28, 250x45, 345x26 and 300x40, all achieve the above effects, and create great benefits for companies.
Claims (6)
1. The utility model provides a material extrusion die is arranged to 7 hard alloy, includes pan feeding mouth, its characterized in that:
the feeding port comprises a middle feeding part and a side feeding part;
the side feeding parts are symmetrically arranged at two sides of the middle feeding part to form a butterfly shape, the outer side edge lines of the side feeding parts are arc-shaped, and the area of an upper area separated by a central extension line of the middle feeding part is smaller than that of a lower area;
the side feeding part is transited to the middle feeding part through a multi-stage bevel, and the slope is gradually reduced from outside to inside; the side feeding part comprises an arc-shaped curved surface unit at the outer side and a connecting unit at the inner side, the arc-shaped curved surface unit is provided with two levels of oblique angles at intervals, and the oblique angle at the outer side is larger than the oblique angle at the inner side; the oblique angles arranged on the arc-shaped curved surface unit comprise a primary oblique angle and a secondary oblique angle, wherein the primary oblique angle is 20-30 degrees, and the secondary oblique angle is 10-15 degrees;
the outer end of both sides of the middle feeding part is provided with a shunt rib, the shunt rib extends to the outer side edge line of the side feeding part and is in a shape with upper and lower two sides being convex.
2. The 7-series hard alloy row material extrusion die according to claim 1, characterized in that:
the inner side edge line of the side feeding part is perpendicular to the middle feeding part, and the joint of the inner side edge line and the middle feeding part is rounded.
3. The 7-series hard alloy row material extrusion die according to claim 1, characterized in that:
and a pocket is arranged on the upper side of the middle feeding part.
4. The 7-series hard alloy row material extrusion die according to claim 1, characterized in that:
the length of the middle area of the working belt connected with the feeding port is larger than the lengths of the two end areas, the inlet side of the working belt connected with the feeding port is in smooth transition from the middle area to the two end areas, the length of the middle area is larger than the lengths of the two end areas by 3-8 mm, and the width of the middle area is 50-70% of the width of the working belt.
5. The 7-series hard alloy row material extrusion die according to claim 1, characterized in that:
the upper side and the lower side of the middle feeding part are connected to the working belt through a blocking angle, and the blocking angle is 3-6 degrees.
6. The 7-series hard alloy row material extrusion die according to claim 5, characterized in that:
the working belt is transited to a first-stage rear blank cutter through an oblique angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911171789.6A CN110722011B (en) | 2019-11-26 | 2019-11-26 | 7 hard alloy row material extrusion die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911171789.6A CN110722011B (en) | 2019-11-26 | 2019-11-26 | 7 hard alloy row material extrusion die |
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| CN110722011A CN110722011A (en) | 2020-01-24 |
| CN110722011B true CN110722011B (en) | 2021-06-29 |
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| CN111653397A (en) * | 2020-06-28 | 2020-09-11 | 宁波金田电材有限公司 | Preparation method of ultrathin copper bus bar for electrician |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5305626A (en) * | 1992-01-24 | 1994-04-26 | Reynolds Aluminium Holland B.V. | Extrusion method and extrusion apparatus |
| JP2004058061A (en) * | 2002-07-24 | 2004-02-26 | Furukawa Electric Co Ltd:The | DIE FOR EXTRUDING Zn CONTAINING ALUMINUM ALLOY |
| CN108114997A (en) * | 2017-12-22 | 2018-06-05 | 福建省南平铝业股份有限公司 | A kind of extrusion die |
| CN207899889U (en) * | 2018-02-01 | 2018-09-25 | 苏州市永利成模具制造有限公司 | A kind of butterfly bridge mold |
| CN109201764A (en) * | 2018-10-26 | 2019-01-15 | 山东新活新材料科技有限公司 | It is a kind of for producing the guiding module of groove profile aluminum alloy pattern plate |
-
2019
- 2019-11-26 CN CN201911171789.6A patent/CN110722011B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5305626A (en) * | 1992-01-24 | 1994-04-26 | Reynolds Aluminium Holland B.V. | Extrusion method and extrusion apparatus |
| JP2004058061A (en) * | 2002-07-24 | 2004-02-26 | Furukawa Electric Co Ltd:The | DIE FOR EXTRUDING Zn CONTAINING ALUMINUM ALLOY |
| CN108114997A (en) * | 2017-12-22 | 2018-06-05 | 福建省南平铝业股份有限公司 | A kind of extrusion die |
| CN207899889U (en) * | 2018-02-01 | 2018-09-25 | 苏州市永利成模具制造有限公司 | A kind of butterfly bridge mold |
| CN109201764A (en) * | 2018-10-26 | 2019-01-15 | 山东新活新材料科技有限公司 | It is a kind of for producing the guiding module of groove profile aluminum alloy pattern plate |
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| CN110722011A (en) | 2020-01-24 |
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