CN104772358B - Metal replaces extrusion molding apparatus and method - Google Patents
Metal replaces extrusion molding apparatus and method Download PDFInfo
- Publication number
- CN104772358B CN104772358B CN201510208534.8A CN201510208534A CN104772358B CN 104772358 B CN104772358 B CN 104772358B CN 201510208534 A CN201510208534 A CN 201510208534A CN 104772358 B CN104772358 B CN 104772358B
- Authority
- CN
- China
- Prior art keywords
- drift
- recipient
- blank
- core
- extrusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
Metal replaces extrusion molding apparatus and method, and it is related to a kind of laborsaving extrusion molding apparatus and method.The device and method solves the problems, such as that energy consumption needed for current extrusion molding apparatus and method is big, flow uniformity is poor, stock utilization is low.Device scheme：Recipient is located on base, and core is located at the bottom of recipient, and blank is located in recipient and is located at one end of the top of core, the first drift and the second drift and is located in recipient and acts against the upper surface of blank.Method scheme：Core, blank, the first drift and the second drift are sequentially placed into into recipient；Fix the second drift motionless, the first drift moves down distance for L, on the downside of which, metal compressive deformation be sequentially extruded shaping；First drift is fixed again now, the second drift moves down distance for 2L, promotes blank to be below extruded shaping；According to as above sequence of operation, the first drift and the descending loading of the second drift alternating, until blank is extruded completely.The present invention is used for metal forming.
Description
Technical field
The present invention relates to a kind of metallic extrusion molding device and method, and in particular to a kind of laborsaving extrusion molding apparatus and side
Method.
Background technology
Reducing energy consumption, raising product propertiess are many general character problem in science of interest of current extrusion manufacture field.It is long
Since phase, the traditional method for improving extruding flow behavior, the single optimization to technological parameter has been limited to, although come from macroscopic perspective more
Certain effect is seen, but this can not inherently prevent the generation of extrusion defect and the improvement of product propertiess.
Backward extrusion is a kind of relatively labor-saving manufacturing process.Klaus B.M ü ller etc. propose one kind makes friction play actively work
Active friction squeezing and pressing method, and studied by test, as a result show：In the starting stage of crimp, phase is only needed
When the load capacity in maximum distortion power 38% is capable of achieving common backward extrusion, and the extruding force of starting stage has been reduced to total load
The 18% of lotus, and by improving extruding condition, production efficiency can improve 8～10%.Metal in extrusion process can significantly be improved
The uniformity of Deformation Flow, and then improve the quality and performance of product.At present, though active friction squeezing and pressing method has research, because of which
Technique own characteristic is limited, and that what is applied in production practices is relatively fewer.
Subsequently, another kind can realize that labour-saving extrusion technique-shear extrusion is suggested, and it is the one of cup bar extrusion
Individual special area, and the popularization that cup bar extrusion presses situation is carried out in fine mode.Occur " cutting crowded " geometrical condition be：
The diameter that convex mould diameter is not more than branch position must is fulfilled for first, while ratio of height to diameter of the ingot and punch are suitable with blank diameter ratio
Work as relation, by changing the size of technique hole depth realizing, and with whether meet do not occur it is counter squeeze as foundation, that is, ensure punch
Starting stage just extends into die cavity exit site deformation, and the method has certain technology in branch class components such as manufacture valve bodies
Advantage.
By applying twist motion to the tool and mould in extrusion process, can effectively change the model of action of frictional force, reach
Laborsaving and modified purpose.Sergeev proposes the extrusion forming technology for applying twisting action to drift, and the method can change base
Between material and tool and mould, the distribution of contact stress, significantly reduces shaping load.But as bar class instrument, such as apply moment of torsion simultaneously
With the coupling of axle pressure, the requirement to drift overall performance is higher.Loginov etc. applies to turn using to core during extrusion molding
Dynamic model of action is studied.When the method can change shaping between blank and mould frictional force action direction, make blank
Shaping is extruded by the one-component for only needing to overcome original frictional resistance, therefore, significantly reduce shaping load.Correlation is ground
Study carefully result to show：Core is applied to rotate except reducing in addition to shaping load, moreover it is possible to improve the tissue and mechanical property of extruded product
Energy.
But core applies rotary extrusion forming technology and is only applicable to circular section section bar, for product with odd-shaped cross section, must
Axial streamline can be so caused " to cut off " along profile direction；Meanwhile, because of the change of friction condition at core mouth, make to add at this and answer
The distribution of power becomes more complicated, increased the probability of the flow velocity inhomogeneities and generation warping defects of extrusion metal on the contrary,
The desirability of produce reality application cannot be met.Such as die is applied to rotate, an above-mentioned difficult problem will be readily solved, for this purpose, die
The extrusion forming method for applying twisting action is suggested immediately.Because die and blank contact area are more larger, extruding energy consumption is reduced
Effect will be more notable.
With the increasingly raising to demands such as product combination property and application extensions, for the novelty of conventional extrusion technology
Research still is continuing in depth to be launched；Meanwhile, shape/property integration accuracy controlling is the important side of extrusion forming technology development
To and one of trend, to effectively improving production efficiency, stock utilization and expanding application model of the technology in produce reality
The aspect such as enclosing has immeasurable meaning.
The content of the invention
It is an object of the invention to provide a kind of metallic extrusion molding device and method, be solve current extrusion molding apparatus and
Energy consumption needed for method is big, flow uniformity is poor, the problem that stock utilization is low.
The present invention is adopted the technical scheme that to solve above-mentioned technical problem：Device scheme：Described device includes the first punching
Head, the second drift, recipient, core and base, recipient are located on base, and core is located at the bottom of recipient, and blank is located at
It is located in recipient in recipient and positioned at one end of the top of core, the first drift and the second drift and acts against the upper of blank
End face.
Method scheme：Methods described comprises the steps：Step one, base is fixed on press bench；Step
The 2nd, recipient is placed on the top of base；
Step 3, core, blank, the first drift and the second drift are sequentially placed into into recipient；
Step 4, to fix the second drift motionless, and the first drift moves down distance for L, and on the downside of which, metal compressive deformation is simultaneously
Shaping is extruded sequentially；
Step 5, the first drift is now fixed again, the second drift moves down distance for 2L, promotes blank below squeezed
Go out shaping, as one loading cycle is completed；
Step 6, according to as above sequence of operation, the first drift and the second drift replace descending loading, until blank is complete
Extrusion, now two drifts are respectively positioned on recipient bottom, and as shaping terminates, in alternately extrusion process, each drift single pass
Interior drafts scope for blank entire length 5～25%, the descending extrusion speed of the first drift and the second drift is consistent.
Beneficial effects of the present invention：Apparatus of the present invention have the advantage that：Breach conventional metals extrusion tooling structure system
During making, drift is overall design concept, is made into Split type structure form；Adopt during conventional metals extrusion molding
Drift is integrally descending to apply stressed fixed loading mode to blank, and the present invention adopts two halves or split drifts more than two halves to hand over
For the descending loading of substep.
The inventive method has the advantage that：When different split drifts are alternately loaded, compared to conventional extruded forming process
The actual loaded active area of middle drift is obviously reduced, therefore, reduce the true extrusion ratio in each loading passage, extrusion gold
The flow uniformity of category is significantly improved, and extrusion load is decreased, and the range of decrease is up to 30%～70% or so；
When drift is alternately loaded step by step, due to the change of stress condition, die bottom comer metal also can produce change to die orifice
The trend of shape flowing, so, dead band defect is substantially reduced or even eliminates, stock utilization improves 10%～40% therewith；
Split drift replaces in descending loading procedure, generates violent detrusion between different drifts at interface,
Cause the depth of blank interior tissue to refine, cause mechanical property to change therewith；
The two ore control of shape and performance is realized in extrusion process, and without the need for single fine grain treatment operation,
The purpose of integrated accuracy controlling is can reach in short route.
Description of the drawings
Fig. 1 is the structural representation of apparatus of the present invention, and Fig. 2 is two drifts or so setting and when cross section ratio is not 1
Structural representation, Fig. 3 is structural representation of two drifts when being inside and outside, and Fig. 4 is manufacturing process flow chart of the present invention, Fig. 5
It is drift cross section ratio pressing method flow chart when not being 1, Fig. 6 is that drift is inside and outside manufacturing process flow chart when arranging.
Specific embodiment
Specific embodiment one：Illustrate present embodiment with reference to Fig. 1, the device of present embodiment include the first drift 1, the
Two drifts 2, recipient 3, core 5 and base 6, recipient 3 are located on base 6, and core 5 is located at the bottom of recipient 3, blank 4
The one end for being located in recipient 3 and being located at the top of core 5, the first drift 1 and the second drift 2 is located in recipient 3 and leans
In the upper surface of blank 4.
Specific embodiment two：Present embodiment, first drift 1 and the second drift 2 of present embodiment are illustrated with reference to Fig. 1
It is set up in parallel, the first drift 1 and the second drift 2 are highly identical, the cross section of the first drift 1 and the second drift 2 is arch and two
Individual cross section constitutes the descending loading of alternating that the circle matched with recipient, drift or so arrange two drifts convenient to carry out,
The shaping load in extrusion process can be reduced, the detrusion at interface promotes the refinement of crystal grain depth and mechanical property to carry
Height, the benefit that analysis left and right is arranged.Other embodiment is identical with specific embodiment one.
Specific embodiment three：Present embodiment, first drift 1 and the second drift 2 of present embodiment are illustrated with reference to Fig. 1
Cross section ratio be 1：1, during this kind of ratio, load shedding effect is the most notable.Other embodiment and one phase of specific embodiment
Together.
Specific embodiment four：Present embodiment, first drift 1 and the second drift 2 of present embodiment are illustrated with reference to Fig. 2
Cross section ratio range be 0.3～1, asymmetric set-up mode can make fine grain position needed for blank by two drifts alternately under
The detrusion that row is realized realizes that crystal grain depth is refined.Other embodiment is identical with specific embodiment one.
Specific embodiment five：Present embodiment is illustrated with reference to Fig. 3, the second drift 2 of present embodiment is cylindrical shape, the
One drift 1 is arranged in the second drift 2, and the cross section ratio of the first drift 1 and the second drift 2 is 0.3～1, inside and outside setting
Mode can significantly increase the active area at shearing position so as to be transformed into ring surface pattern by the single plane for paralleling to the axis.
Other embodiment is identical with specific embodiment one.
Specific embodiment six：Present embodiment is illustrated with reference to Fig. 4～Fig. 6, the method for present embodiment includes following step
Suddenly：Step one, base 6 is fixed on press bench；Step 2, the top that recipient 3 is placed on base 6；
Step 3, core 5, blank 4, the first drift 1 and the second drift 2 are sequentially placed into into recipient 3；
Step 4, to fix the second drift 2 motionless, and the first drift 1 moves down distance for L, 4 compressive deformation of blank on the downside of which
And sequentially it is extruded shaping；
Step 5, the first drift 1 is now fixed again, the second drift 2 moves down distance for 2L, promotes blank 4 below
Shaping is extruded, as one loading cycle is completed；
Step 6, replace descending loading according to as above sequence of operation, the first drift 1 and the second drift 2, until by blank 4
Extrude completely, now the first drift 1 and the second drift 2 are respectively positioned on 3 bottom of recipient, as shaping terminates.Replace extrusion process
In, in each drift single pass, drafts scope is the 5～25% of blank entire length, and the first drift 1 and the second drift 2 replace
Descending extrusion speed is consistent.Other embodiment is identical with specific embodiment one.
Claims (1)
1. a kind of metal replaces extrusion molding apparatus, it is characterised in that described device include the first drift (1), the second drift (2),
Recipient (3), core (5) and base (6), recipient (3) are located on base (6), and core (5) is located at the bottom of recipient (3),
Blank (4) is located in recipient (3) and is located at one end of the top of core (5), the first drift (1) and the second drift (2) and is located at
Recipient (3) is interior and acts against the upper surface of blank (4)；
Second drift (2) is cylindrical shape, and the first drift (1) is arranged in the second drift (2) and the two is highly identical, the first drift
(1) the cross section ratio range of and the second drift (2) is 0.3～1；
Manufacturing process comprises the steps：Step one, base (6) is fixed on press bench；Step 2, by recipient
(3) it is placed on the top of base (6)；
Step 3, to being sequentially placed into core (5), blank (4), the first drift (1) and the second drift (2) in recipient (3)；
Step 4, to fix the second drift (2) motionless, and the first drift (1) moves down distance for L, and on the downside of which, blank (4) is by buckling
Shape is simultaneously sequentially extruded shaping；
Step 5, the first drift (1) is now fixed again, the second drift (2) moves down distance for 2L, promotes blank below
(4) shaping is extruded, as one loading cycle is completed；
Step 6, according to as above sequence of operation, the first drift (1) and the descending loading of the second drift (2) alternating, until by blank
(4) extrude completely, now the first drift (1) and the second drift (2) are respectively positioned on recipient (3) bottom, as shaping terminates；Alternately
In extrusion process, drafts scope for blank entire length 5～25% in each drift single pass, the first drift (1) and the
The descending extrusion speed of two drifts (2) alternating is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510208534.8A CN104772358B (en) | 2015-04-28 | 2015-04-28 | Metal replaces extrusion molding apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510208534.8A CN104772358B (en) | 2015-04-28 | 2015-04-28 | Metal replaces extrusion molding apparatus and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104772358A CN104772358A (en) | 2015-07-15 |
| CN104772358B true CN104772358B (en) | 2017-03-29 |
Family
ID=53614299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510208534.8A Active CN104772358B (en) | 2015-04-28 | 2015-04-28 | Metal replaces extrusion molding apparatus and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104772358B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106064181B (en) * | 2016-06-22 | 2018-07-31 | 重庆大学 | A kind of the accumulation pressurizing unit and its application method of plank severe plastic deformation |
| CN107649529B (en) * | 2017-03-16 | 2018-11-20 | 哈尔滨理工大学 | Bent member mistake is away from extrusion molding apparatus and method |
| GB201707519D0 (en) * | 2017-05-10 | 2017-06-21 | Imp Innovations Ltd | A method for forming curved lengths of extruded profiles/sections in metal alloys |
| CN107377653A (en) * | 2017-09-22 | 2017-11-24 | 南昌航空大学 | The flat prod cast of extruding metal |
| CN107604207A (en) * | 2017-11-16 | 2018-01-19 | 宁波兴业盛泰集团有限公司 | A kind of aluminium White brass alloy of highly conductive high intensity and preparation method thereof |
| CN110508635B (en) * | 2019-08-27 | 2021-07-30 | 太原理工大学 | Asymmetric reciprocating extrusion device with separated male die and machining method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57109520A (en) * | 1980-12-27 | 1982-07-08 | Kobe Steel Ltd | Container cleaning method for indirect extrusion press |
| DE10141223C1 (en) * | 2001-07-11 | 2002-11-21 | Alusuisse Tech & Man Ag | Profile extrusion method, for ductile material such as solder material or aluminium alloy, uses direct forcing of ductile material bar through forming tool via displaced pressure die |
| CN1507962A (en) * | 2002-12-18 | 2004-06-30 | 中国科学院金属研究所 | High-temperature alloy tube billet working method |
| UA68115A (en) * | 2003-10-10 | 2004-07-15 | Donbaska State Machinery Const | Method for production of parts with through hole |
| CN103602853B (en) * | 2013-11-12 | 2016-01-13 | 福建省南安市鹏鑫铜业有限公司 | A kind of low lead extrudes round brass rod and production method thereof |
| CN103706660B (en) * | 2013-12-20 | 2016-07-13 | 广铝集团有限公司 | A kind of Extrusion Process of Aluminum Alloy Profile die sleeve |
-
2015
- 2015-04-28 CN CN201510208534.8A patent/CN104772358B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104772358A (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104772358B (en) | Metal replaces extrusion molding apparatus and method | |
| CN106363031A (en) | Rotating extrusion forming method for large height-width ratio inner ring rib formed by hollow blank | |
| CN106424188A (en) | Rotary extrusion forming mold for forming large depth-width ratio inner ring rib through hollow blank | |
| CN108097733B (en) | Extrusion-torsion composite processing die and method capable of realizing multidirectional shearing | |
| CN105081189B (en) | Monel blind nut cold-heading device and production technology | |
| CN106903251A (en) | Through hole sleeve metal parts cold upsetting production technique long | |
| CN206474627U (en) | The cold-heading device of special-shaped torque arm | |
| CN101850397A (en) | Forging method of large-scale circular cylinder body and three-point anvil adopted by same | |
| CN106903482A (en) | A kind of cold-forge forming technique of thin-wall tube-shaped metal parts | |
| CN107649529B (en) | Bent member mistake is away from extrusion molding apparatus and method | |
| CN104014605B (en) | The equilateral reverse anti-extruding process of three-jaw flange sliding sleeve and reverse anti-extruding mold | |
| CN102788154B (en) | Integral hydraulic tappet plunger and overall method for rolling and molding thereof | |
| CN107649629A (en) | Larger ratio of height to diameter magnesium alloy bar eliminates anisotropic big plastic deformation blank-making method | |
| CN106881366A (en) | A kind of accumulator tank body forging cold-forging forming technique and anti-extruding mold | |
| CN103192016B (en) | Asymmetric large-diameter straight spur gear cold precision forming device | |
| CN202028679U (en) | Punch for stamping high boss on plate metal | |
| CN104226703B (en) | A kind of method making automotive pull rod joint | |
| CN102615236A (en) | Cold precision forming device for asymmetric cylindrical gear | |
| CN202224580U (en) | Roll forging composite die for blanks | |
| CN106001154B (en) | A kind of method for waiting channel pressings mould and forming blank | |
| CN109365560A (en) | A kind of rotation backward extrusion apparatus and method preparing Ultra-fine Grained cup shell | |
| CN104668324A (en) | Forming method for double-end stud blank | |
| CN107671225A (en) | A kind of moulding process of special-shaped bent axle | |
| CN207996898U (en) | A kind of crowded torsion Compound Machining mold that multi-direction shearing can be achieved | |
| CN209452527U (en) | A kind of device of the ultra-fine microfilament of afterturn form metal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200727 Address after: 350000 Tongyang 217, Dongtai Village, Qingkou Town, Minhou County, Fuzhou City, Fujian Province Patentee after: FUJIAN XIANGXIN SHARES Co.,Ltd. Address before: 150080 Harbin, Heilongjiang, Nangang District Road, No. 52 Patentee before: HARBIN University OF SCIENCE AND TECHNOLOGY |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Metal alternating extrusion forming device and method Effective date of registration: 20220218 Granted publication date: 20170329 Pledgee: Bank of Communications Ltd. Fujian branch Pledgor: FUJIAN XIANGXIN SHARES Co.,Ltd. Registration number: Y2022350000022 |