CN106553026B - Thin Walled Curved bus aluminum alloy liner forming method and molding die - Google Patents
Thin Walled Curved bus aluminum alloy liner forming method and molding die Download PDFInfo
- Publication number
- CN106553026B CN106553026B CN201611094021.XA CN201611094021A CN106553026B CN 106553026 B CN106553026 B CN 106553026B CN 201611094021 A CN201611094021 A CN 201611094021A CN 106553026 B CN106553026 B CN 106553026B
- Authority
- CN
- China
- Prior art keywords
- pin
- liner
- punch
- polyurethane
- blank
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B15/00—Self-propelled projectiles or missiles, e.g. rockets; Guided missiles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a kind of Thin Walled Curved bus aluminum alloy liner forming methods, and three-stage compression molding is divided on forcing press：After liner blank is integrally put into cavity plate on polyurethane punch-pin, it is molded polyurethane punch-pin on forcing press, be allowed to generate flexible deformation and liner blank is driven to form opposite sliding with cavity plate, liner blank is made to generate predeformation；Polyurethane punch-pin is taken out and is replaced with nylon punch-pin, is pressurizeed on forcing press, shaping is carried out to preforming liner blank；Finally nylon punch-pin is taken out and is substituted with polyurethane punch-pin, is pressurizeed on forcing press, polyurethane punch-pin is made to generate final deformation, and shaping liner blank is made to be closed with polyurethane punch-pin outer mold surface, cavity plate inner mold face paste.The forming method control of product quality is good, and wall thickness dimension can control within the scope of tolerance+0.1mm, and use is preforming, shaping and final molding process, good fluidity when being molded using aluminium alloy, ensures thin and thick size without overproof.
Description
Technical field
The present invention relates to the processing technique fields of Thin Walled Curved bus aluminum alloy liner in ballistic missile, in particular to a kind of thin
Wall song bus aluminum alloy liner forming method and molding die.
Background technology
Liner is pressed during fill flash fire between quick-fried of broken first and the middle layer of fill in ballistic missile
Quick-fried of liner and broken first is driven out of together when power reaches critical condition releases energy.Liner mostly uses Thin Walled Curved bus structure at present,
The type face of liner is consistent with explosive assembly casing to use arc transition, and material is small with density, based on the good aluminium alloy of elongation percentage.
Traditional Thin Walled Curved bus structure liner manufacturing process is the spinning on cnc spinning machine, and pressure technique is design and adds
Work liner spinning mandrel revolves after being then equipped with the inner lining process blank made from the spinning mandrel on spinning machine
Pressure.Rotary pressure technology demoulds that difficult, efficiency is low, of high cost the disadvantage is that wall thickness is difficult to control, surface quality is poor.
Invention content
Present invention aim to the deficiency for traditional diamond-making technique, a kind of guarantee liner thin-walled size is provided without super
Difference, Forming Quality good Thin Walled Curved bus aluminum alloy liner forming method and molding die.
To achieve the above object, the Thin Walled Curved bus aluminum alloy liner forming method designed by the present invention, including walk as follows
Suddenly：
1) aluminum slab material volume is welded into the liner blank of tubular, and there are add in the axial direction at the both ends of liner blank
Spare time measures；
2) will be put into molding die after the completion of liner blank and the assembly of polyurethane punch-pin, on forcing press with 200~
240T pressure is molded polyurethane punch-pin, and polyurethane punch-pin is made to generate flexible deformation, and forcing press becomes with the elasticity of polyurethane punch-pin
Shape downlink together, and liner blank is driven to form opposite sliding with cavity plate, so that liner blank is generated 70%~80% predeformation,
Form preforming liner blank；It is unsuitable for subsequent shaping more than 80% deflection, the deflection less than 70% is unfavorable for interior
The molding for serving as a contrast part reserves deflection appropriate in favor of subsequent shaping since liner blank is locally easy corrugation after molding
Process；Pressure less than 200T cannot generate 70%~80% predeformation, and the pressure more than 240T makes predeformation be more than 80%,
It is unfavorable for subsequent shaping；
3) it is demoulded after completing step 2), molding die will be put into after the completion of preforming liner blank and the assembly of nylon punch-pin
It is interior, it is molded with 70~90T pressure on forcing press, so that preforming liner blank is locally risen when preforming after nylon punch-pin downlink
The clout of wrinkle is molded again covers flat, formation shaping liner blank；Pressure is less than the shaping that 70T is unfavorable for part corrugation position, pressure
Power is more than 90T and is easy to crush nylon；
4) shaping liner blank is attached on cavity plate completion step 3) afterwards, and after taking out nylon punch-pin, polyurethane punch-pin is put into
In molding die, polyurethane punch-pin is molded with 280~320T pressure on forcing press, polyurethane punch-pin is made to generate final deformation,
Forcing press is as the final deformation of polyurethane punch-pin is together after downlink, pressurize to shaping liner blank and polyurethane punch-pin external form
Face, cavity plate inner mold face paste are closed, and preforming liner is formed after demoulding；Pressure is less than 280T fittings not exclusively, and pressure is held more than 320T
Easy crimp；
5) the preforming liner formed in step 4) is machined, ultimately forms required liner.
Further, the outer mold surface of polyurethane punch-pin is consistent with the inner mold face of liner blank in the molding die, described
The outer mold surface of nylon punch-pin is consistent with the inner mold face of liner, and the inner mold face of cavity plate is unilateral than liner outer mold surface in the molding die
Big 0.3~0.5mm is conducive to the dimensional contraction of liner after compensation demoulding.
Further, the centre position of lower template is provided with the through hole being in communication with the outside in the molding die, described recessed
The centre position of mould bottom is equipped with the cavity that is connected to the through hole, and it is convex which is advantageously used for the discharge of gas, polyurethane
The demoulding of preforming liner after flowing and molding when mould is pressurized.
Further, in the step 1), the allowance of the both ends of liner blank in the axial direction is 75~85mm,
The flow constriction of aluminium alloy lining blank when predeformation, shaping when convenient for molding, final molding, to liner size when Vehicle Processing
Amendment.
Further, it in the step 2), will be put into molding die after the completion of liner blank and the assembly of polyurethane punch-pin
Before, to the inner mold face coating lubricating oil of cavity plate, it is conducive to the opposite sliding of blank and cavity plate.
Further, in the step 4), the dwell time is 10~20s.
A kind of Thin Walled Curved bus aluminum alloy liner molding die designed for above-mentioned forming method, including it is cope plate, convex
Mould, with the matched cavity plate of punch-pin and lower template, the punch-pin includes polyurethane punch-pin and nylon punch-pin, in the molding die
The outer mold surface of polyurethane punch-pin is consistent with the inner mold face of liner blank, the outer mold surface of the nylon punch-pin and the inner mold face one of liner
It causes.
Further, the centre position of the lower template is provided with the through hole being in communication with the outside, in the female bottom
Meta position installs the cavity being connected to the through hole, when which is advantageously used for the discharge of gas, polyurethane punch-pin is pressurized
The demoulding of preforming liner after flowing and molding.
Further, the molding die further includes the pressing plate being arranged between the cope plate and the punch-pin.
Forming die structure of the present invention is different from that flanging need to be increased when drawing in the prior art, increases flanging and is although conducive to
The molding of thin-wall part, but the control for being unfavorable for wall thickness dimension is thinned；The present invention divides three-stage compression molding on forcing press：It is first
First, after liner blank integrally being put into cavity plate on polyurethane punch-pin, it is molded polyurethane punch-pin on forcing press, is allowed to generate
Flexible deformation simultaneously drives liner blank to form opposite sliding with cavity plate, and liner blank is made to generate predeformation；Then, polyurethane is convex
Mould takes out to be replaced with nylon punch-pin, is pressurizeed on forcing press, and shaping, the punch-pin in trimming are carried out to preforming liner blank
Nylon material slightly higher with hardness, compressive deformation is small；Finally nylon punch-pin is taken out and is substituted with polyurethane punch-pin, on forcing press
Pressurization makes polyurethane punch-pin generate final deformation, and makes shaping liner blank and polyurethane punch-pin outer mold surface, cavity plate inner mold face paste
It closes, molding pressing is taken out in pressure release, carries out subsequent Vehicle Processing and detection.
Compared with prior art, the present invention haing the following advantages：
1, control of product quality is good, and wall thickness dimension can control within the scope of tolerance+0.1mm, and use is preforming, shaping and most
Final shaping unit process, good fluidity when being molded using aluminium alloy ensure thin and thick size without overproof；
2, cost-effective, raising efficiency, liner blank are molded after being welded with plate with forcing press, stock utilization,
Utilization rate of equipment and installations, production efficiency are improved, and effectively control production cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of Thin Walled Curved bus aluminum alloy liner of the present invention；
Fig. 2 is molding die mounting structure schematic diagram of the present invention；
Fig. 3 is the structural schematic diagram of polyurethane punch-pin in Fig. 2；
Fig. 4 is the structural schematic diagram of nylon punch-pin in Fig. 2.
Wherein：Liner 1, cope plate 2, pressing plate 3, punch-pin 4 are (wherein：Polyurethane punch-pin 4.1, nylon punch-pin 4.2), liner base
Material 5, cavity plate 6, lower template 7, through hole 8, cavity 9.
Specific implementation mode
The present invention is described in further detail for 1, Fig. 2, Fig. 3 and Fig. 4 and specific embodiment below in conjunction with the accompanying drawings, is convenient for
More clearly understand the present invention, but they do not constitute the present invention and limit.
Embodiment 1
1) aluminum slab material volume is welded into the liner blank 5 of tubular, and the both ends of liner blank 5 in the axial direction there are
Allowance 75mm；
2) to the inner mold face coating lubricating oil of cavity plate 6, it is conducive to blank opposite sliding with cavity plate 6；Then by liner blank 5
It is put into molding die with after the completion of the assembly of polyurethane punch-pin 4.1, polyurethane punch-pin is molded with 200T pressure on forcing press
4.1, so that polyurethane punch-pin 4.1 is generated flexible deformation, forcing press with polyurethane punch-pin 4.1 flexible deformation downlink together, and
It drives liner blank 5 to form opposite sliding with cavity plate 6, so that liner blank 5 is generated 70% predeformation, form preforming liner base
Material；
3) it is demoulded after completing step 2), shaping mould will be put into after the completion of preforming liner blank and the assembly of nylon punch-pin 4.2
It in tool, is molded with 70T pressure on forcing press, makes preforming liner blank local when preforming after 4.2 downlink of nylon punch-pin
Corrugated clout is molded again covers flat, formation shaping liner blank；
4) shaping liner blank is attached on cavity plate 6 completion step 3) afterwards, after taking out nylon punch-pin 4.2, by polyurethane punch-pin
In 4.1 input molding dies, with 320T pressure molding polyurethane punch-pin 4.1 on forcing press, polyurethane punch-pin 4.1 is made to generate most
Deformation eventually, forcing press as the final deformation of polyurethane punch-pin 4.1 is together after downlink, pressurize 10s to shaping liner blank with gather
4.1 outer mold surface of urethane punch-pin, 6 inner mold face paste of cavity plate are closed completely, and preforming liner is formed after demoulding；
5) the preforming liner formed in step 4) is machined, ultimately forms required liner 1.
Embodiment 2
1) aluminum slab material volume is welded into the liner blank 5 of tubular, and the both ends of liner blank 5 in the axial direction there are
Allowance 80mm；
2) to the inner mold face coating lubricating oil of cavity plate 6, it is conducive to blank opposite sliding with cavity plate 6；Then by liner blank 5
It is put into molding die with after the completion of the assembly of polyurethane punch-pin 4.1, polyurethane punch-pin is molded with 220T pressure on forcing press
4.1, so that polyurethane punch-pin 4.1 is generated flexible deformation, forcing press with polyurethane punch-pin 4.1 flexible deformation downlink together, and
It drives liner blank 5 to form opposite sliding with cavity plate 6, so that liner blank 5 is generated 75% predeformation, form preforming liner base
Material；
3) it is demoulded after completing step 2), shaping mould will be put into after the completion of preforming liner blank and the assembly of nylon punch-pin 4.2
It in tool, is molded with 80T pressure on forcing press, makes preforming liner blank local when preforming after 4.2 downlink of nylon punch-pin
Corrugated clout is molded again covers flat, formation shaping liner blank；
4) shaping liner blank is attached on cavity plate 6 completion step 3) afterwards, after taking out nylon punch-pin 4.2, by polyurethane punch-pin
In 4.1 input molding dies, with 300T pressure molding polyurethane punch-pin 4.1 on forcing press, polyurethane punch-pin 4.1 is made to generate most
Deformation eventually, forcing press as the final deformation of polyurethane punch-pin 4.1 is together after downlink, pressurize 15s to shaping liner blank with gather
4.1 outer mold surface of urethane punch-pin, 6 inner mold face paste of cavity plate are closed completely, and preforming liner is formed after demoulding；
5) the preforming liner formed in step 4) is machined, ultimately forms required liner 1.
Embodiment 3
1) aluminum slab material volume is welded into the liner blank 5 of tubular, and the both ends of liner blank 5 in the axial direction there are
Allowance 85mm；
2) to the inner mold face coating lubricating oil of cavity plate 6, it is conducive to blank opposite sliding with cavity plate 6；Then by liner blank 5
It is put into molding die with after the completion of the assembly of polyurethane punch-pin 4.1, polyurethane punch-pin is molded with 240T pressure on forcing press
4.1, so that polyurethane punch-pin 4.1 is generated flexible deformation, forcing press with polyurethane punch-pin 4.1 flexible deformation downlink together, and
It drives liner blank 5 to form opposite sliding with cavity plate 6, so that liner blank 5 is generated 80% predeformation, form preforming liner base
Material；
3) it is demoulded after completing step 2), shaping mould will be put into after the completion of preforming liner blank and the assembly of nylon punch-pin 4.2
It in tool, is molded with 90T pressure on forcing press, makes preforming liner blank local when preforming after 4.2 downlink of nylon punch-pin
Corrugated clout is molded again covers flat, formation shaping liner blank；
4) shaping liner blank is attached on cavity plate 6 completion step 3) afterwards, after taking out nylon punch-pin 4.2, by polyurethane punch-pin
In 4.1 input molding dies, with 280T pressure molding polyurethane punch-pin 4.1 on forcing press, polyurethane punch-pin 4.1 is made to generate most
Deformation eventually, forcing press as the final deformation of polyurethane punch-pin 4.1 is together after downlink, pressurize 20s to shaping liner blank with gather
4.1 outer mold surface of urethane punch-pin, 6 inner mold face paste of cavity plate are closed completely, and preforming liner is formed after demoulding；
5) the preforming liner formed in step 4) is machined, ultimately forms required liner 1.
Molding die employed in above-described embodiment is specific as follows：It is matched including cope plate 2, punch-pin 4, with punch-pin 4
Cavity plate 6, lower template 7 and the pressing plate 2 being arranged between cope plate 2 and punch-pin 4, key point of the invention is：Punch-pin 4 includes
The outer mold surface of polyurethane punch-pin 4.1 and nylon punch-pin 4.2, polyurethane punch-pin 4.1 is consistent with the inner mold face of liner blank 5, nylon
The outer mold surface of punch-pin 4.2 is consistent with the inner mold face of liner 1, the inner mold face of cavity plate 6 it is unilateral it is bigger by 0.3 than 1 outer mold surface of liner~
0.5mm is conducive to the dimensional contraction of liner after compensation demoulding；In addition, the centre position of lower template 7 is provided with running through of being in communication with the outside
Hole 8, the centre position of 6 bottom of cavity plate are equipped with the cavity 9 being connected to through hole 8, which is advantageously used for discharging, gathering for gas
The demoulding of preforming liner after flowing and molding when urethane punch-pin 4.1 is pressurized.
Claims (6)
1. a kind of Thin Walled Curved bus aluminum alloy liner forming method, it is characterised in that：The forming method includes the following steps：
1) aluminum slab material volume is welded into the liner blank (5) of tubular, and the both ends of liner blank (5) in the axial direction there are
Allowance；
2) it will be put into molding die after the completion of liner blank (5) and polyurethane punch-pin (4.1) assembly, with 200 on forcing press
~240T pressure is molded, and to the predeformation of liner blank (5) generation 70%~80% after polyurethane punch-pin (4.1) downlink, is formed
Preforming liner blank；
3) it is demoulded after completing step 2), molding die will be put into after the completion of preforming liner blank and nylon punch-pin (4.2) assembly
It is interior, it is molded with 70~90T pressure on forcing press, makes preforming liner blank when preforming after nylon punch-pin (4.2) downlink
The corrugated clout in part is molded again covers flat, formation shaping liner blank；
4) shaping liner blank is attached on cavity plate (6) completion step 3) afterwards, after taking out nylon punch-pin (4.2), by polyurethane punch-pin
(4.1) it puts into molding die, is molded with 280~320T pressure on forcing press, pressurize is extremely after polyurethane punch-pin (4.1) downlink
Shaping liner blank is closed with polyurethane punch-pin (4.1) outer mold surface, cavity plate (6) inner mold face paste, and preforming liner is formed after demoulding；
5) the preforming liner formed in step 4) is machined, ultimately forms required liner (1).
2. Thin Walled Curved bus aluminum alloy liner forming method according to claim 1, it is characterised in that：In the molding die
The outer mold surface of polyurethane punch-pin (4.1) is consistent with the inner mold face of liner blank (5), the outer mold surface of the nylon punch-pin (4.2) with
The inner mold face of liner (1) is consistent, in the molding die inner mold face of cavity plate (6) it is unilateral it is bigger by 0.3 than liner (1) outer mold surface~
0.5mm。
3. Thin Walled Curved bus aluminum alloy liner forming method according to claim 1, it is characterised in that：In the molding die
The centre position of lower template (7) is provided with the through hole (8) being in communication with the outside, the centre position of cavity plate (6) bottom be equipped with
The cavity (9) of through hole (8) connection.
4. according to claims 1 or 2 or the 3 Thin Walled Curved bus aluminum alloy liner forming methods, it is characterised in that：The step
1) in, the allowance of the both ends of liner blank (5) in the axial direction is 75~85mm.
5. according to claims 1 or 2 or the 3 Thin Walled Curved bus aluminum alloy liner forming methods, it is characterised in that：The step
2) in, liner blank (5) is assembled with polyurethane punch-pin (4.1) before being put into molding die after the completion, to the interior of cavity plate (6)
Type face coating lubricating oil.
6. according to claims 1 or 2 or the 3 Thin Walled Curved bus aluminum alloy liner forming methods, it is characterised in that：The step
4) in, the dwell time is 10~20s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094021.XA CN106553026B (en) | 2016-12-02 | 2016-12-02 | Thin Walled Curved bus aluminum alloy liner forming method and molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094021.XA CN106553026B (en) | 2016-12-02 | 2016-12-02 | Thin Walled Curved bus aluminum alloy liner forming method and molding die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106553026A CN106553026A (en) | 2017-04-05 |
| CN106553026B true CN106553026B (en) | 2018-10-02 |
Family
ID=58446140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611094021.XA Active CN106553026B (en) | 2016-12-02 | 2016-12-02 | Thin Walled Curved bus aluminum alloy liner forming method and molding die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106553026B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108927939A (en) * | 2018-06-11 | 2018-12-04 | 上海浦东三冯金属制品有限公司 | A kind of guide sleeve stack shell pressing mold and its application method |
| CN112139761B (en) * | 2020-08-21 | 2022-01-25 | 成都飞机工业（集团）有限责任公司 | Numerical control machining method for controlling machining deformation of large aluminum alloy wall plate part |
| CN112238185B (en) * | 2020-09-29 | 2022-11-15 | 重庆大学 | Stamping die for forming conical thin-wall part |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372024A (en) * | 2008-09-27 | 2009-02-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for drawing and forming parabola revolution body |
| CN202752476U (en) * | 2012-08-21 | 2013-02-27 | 沈阳黎明航空发动机(集团)有限责任公司 | Thin-wall pipe polyurethane forming process equipment |
| CN103394576A (en) * | 2013-08-08 | 2013-11-20 | 贵州航天精工制造有限公司 | Forming method for processing soft flange in solid paraffin bulging mode |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7934410B2 (en) * | 2006-06-26 | 2011-05-03 | Alcoa Inc. | Expanding die and method of shaping containers |
| KR102101137B1 (en) * | 2010-08-20 | 2020-04-14 | 알코아 유에스에이 코포레이션 | Shaped metal container and method for making same |
-
2016
- 2016-12-02 CN CN201611094021.XA patent/CN106553026B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372024A (en) * | 2008-09-27 | 2009-02-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for drawing and forming parabola revolution body |
| CN202752476U (en) * | 2012-08-21 | 2013-02-27 | 沈阳黎明航空发动机(集团)有限责任公司 | Thin-wall pipe polyurethane forming process equipment |
| CN103394576A (en) * | 2013-08-08 | 2013-11-20 | 贵州航天精工制造有限公司 | Forming method for processing soft flange in solid paraffin bulging mode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106553026A (en) | 2017-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109648029B (en) | Forging die set for large thin-wall cylinder flange plate and forging method thereof | |
| CN102240772B (en) | Forming method of single elbow crankshaft forgings | |
| CN107812871B (en) | A kind of high flange becomes the thick wall head solid forging method of wall thickness | |
| RU2633116C2 (en) | METHOD FOR FORMING EXTRUDED CONSTRUCTION PIPE | |
| CN106553026B (en) | Thin Walled Curved bus aluminum alloy liner forming method and molding die | |
| CN106424355A (en) | Annular thin-wall part molding die and molding method | |
| CN108723162A (en) | A kind of method that Fluid pressure induction shapes tangential non-close variable cross-section tubular member | |
| CN102744284A (en) | High-pressure elbow pipe billet heat-pushing temperature pressure shaping method | |
| CN103537509A (en) | Large-sized multi-nozzle pipe hot extrusion forming process formulation and mold design method | |
| CN102172734B (en) | Rolling blank making method for automobile transmission gear ring | |
| CN102921791B (en) | Section-variable hollow component forming device and method | |
| CN104148889B (en) | A kind of square plate casing blank manufacturing process and mated forming die thereof | |
| CN106424180A (en) | Extruding device and method for double-mouth and thick-wall pipe blank extrusion manufacturing | |
| CN106623714A (en) | Manufacturing method of magnesium alloy product | |
| CN110328316A (en) | A kind of square plate casing forming mold and forming method | |
| CN103586299A (en) | High-alloy steel flexible wheel blank warm-extrusion technology used for harmonic wave decelerator | |
| CN111889531B (en) | Positive and negative extrusion forming die and forming method for curved bus type shell | |
| CN102179463B (en) | Blank-making rolling method for conical hub of automotive transmission | |
| CN113399614A (en) | Forming die and method for bilateral scroll static plate of air-conditioning compressor | |
| CN102658304A (en) | Closed-extrusion and molding method of flange | |
| CN103264081A (en) | Shaping method and device of spiral aluminum alloy shell part | |
| CN207547361U (en) | A kind of molding machine of bodywork parts | |
| CN110153267A (en) | A kind of manufacturing process of the special process part based on the forming of pipe internal-filling liquid | |
| CN113319238B (en) | Multidirectional forging forming method for complex aluminum alloy transmission shaft forge piece | |
| CN206794480U (en) | A kind of hydraulic forming mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |