CN102699084A - Cup-shaped piece prepared through reversed and torsion extrusion - Google Patents
Cup-shaped piece prepared through reversed and torsion extrusion Download PDFInfo
- Publication number
- CN102699084A CN102699084A CN2012101791788A CN201210179178A CN102699084A CN 102699084 A CN102699084 A CN 102699084A CN 2012101791788 A CN2012101791788 A CN 2012101791788A CN 201210179178 A CN201210179178 A CN 201210179178A CN 102699084 A CN102699084 A CN 102699084A
- Authority
- CN
- China
- Prior art keywords
- extrusion
- extruding
- reversed
- cup
- product
- 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.)
- Pending
Links
Abstract
The invention belongs to the technical field of a plastic forming technology and relates to a machining processing technology which improves the properties of a product by changing the extrusion way. The invention provides a composite technology which combines reversed extrusion and torsion extrusion; and through the composite technology, products capable of meeting the quality requirements of clients and energy consumption reduction requirements of enterprises can be produced. The invention gives an explanation through an example taking aluminium alloy and brass alloy as extrusion material.
Description
Technical field
The invention belongs to the plastic forming process technical field, is a kind of through changing fashion of extrusion, improves the mechanical processing technique of performance of products.
Background technology
Reverse extruding is one and the diverse notion of forward extrusion, requires to use diverse mechanism and mechatronics to satisfy its requirement.Back extrusion process for forming can be traced back to the appearance of the reverse extrusion of vertical lead pipe extruder in 1870; In the application in the industry then is after Genders has proposed the advantage of reverse extrusion in nineteen twenty-six, and reverse extrusion just obtains the comparison extensive use gradually on the processing industry of aluminium, copper and alloy thereof.
Owing in reverse extruding, do not have relative motion between spindle and the recipient, also,, cut down the consumption of energy etc. so required extruding force is also less relatively just not because of fricative heat, summing up backward extrusion has following advantage:
1. compare with forward extrusion, oppositely push required extruding force and reduce 25-30%;
2. can make full use of extruding force and fully push the more section bar of small bore, use lower extrusion temperature, allow higher extrusion speed;
3. there is not relative motion between recipient and the spindle, thus can frictional heat, the temperature on spindle surface can not raise in extrusion process, and product surface and seamed edge are not easy to crack;
4. the life-span of extrusion die is long;
5. the distortion in any one cross section of whole spindle all is uniformly, does not almost form the trend of extrusion defect and coarse grain;
6. the impurity on spindle surface can not get into goods inside (because not having the metal eddy current to produce in the recipient)
Simultaneously, reversing extruding is a kind of violent plastic forming technology of newly getting up in recent decades, and this technology is crystal grain thinning effectively; Obtain ultra-fine grain; Greatly improve intensity, form anisotropic streamlined fibr tissue at material internal again, improve the combination property of material greatly.
The present invention proposes oppositely pushing and reverse a kind of combination process that extruding combines; Produce and to satisfy client satisfies the requirement that enterprise cuts down the consumption of energy again to the demand of quality product; As militarily can squeeze the high strength shell case; Gun shell can squeeze the high-quality teacup, the various cup shells that need compressive property such as tin can on civilian.
Summary of the invention
It is big to The present invention be directed to present extruding field power consumption, put forward under the not high background of extruded product performance, and mainly be to aluminium, magnesium, copper, part plasticity such as titanium are material preferably.The material that plasticity is good, forming ability is good, can obtain complex-shaped product, combines this technology simultaneously, can make the goods after the extruding obtain good comprehensive performances again, like intensity, hardness, anisotropy etc.
Main contents of the present invention are following:
1. according to requirement of client, select extrusion material requested (like aluminium, alloys such as copper), carry out blanking then,, can carry out suitable heat treatment according to the concrete condition of material.
2. manufacture and design or reequip extrusion die.According to the sample product that the client provides, design rational matching die, also can reequip traditional extrusion die, calculate extruding force again, select the extruder of suitable tonnage etc.
3. the production of product.Blank is put into barrel, and lubricated simultaneously also is essential.In extrusion process, material has received strong torsional deflection, and the refinement greatly of meeting crystal grain simultaneously can be at the neutral spirality fibr tissue of material, and the mechanical property of whole goods will have very big change.
Operation principle of the present invention: operation principle of the present invention is as shown in Figure 1, barrel, and dummy block and blank are under the promotion of extruder; To left movement, punch constantly rotates simultaneously, and material is in extrusion process like this; Because the horizontal velocity and the speed that rotates in a circumferential direction is synthetic, can make metal material that screw type plastic flowing takes place, so final products can form along the axial screw type fibr tissue of extruding; The axial intensity of vertical extruding is with very big improve; Simultaneously strong torsional deflection causes crystal grain refinement greatly, significantly improves the combination property of goods.
Description of drawings
Fig. 1 is turn-back extruding basic principle schematic
Wherein, 1 is the extruding cushion block, and 2 is extrusion billet, and 3 is barrel, and 4 is drift
The specific embodiment
Relate to detection and the performance test analysis etc. of selection, Mould design and manufacturing, turn-back extruding and product of preparation, the extrusion equipment of material chosen, blank in this patent practical implementation process, mainly comprise:
1. the manufacturing of the type selecting of the preparation of alloy blank, equipment and mould.According to the physical dimension of final molding alloy components, require design in conjunction with relevant extrusion technique, prepare corresponding blank.Accomplish the type selecting of calculating extrusion pressure and extrusion equipment simultaneously based on the structure of final shaping alloy components, and the corresponding indirect-extrusion mould of processing and manufacturing.
2. the adjustment of turn-back extrusion process parameters.According to the principle of energy-saving and emission-reduction, in order to make power consumption minimum, produce high-quality product with less cost, the rotary speed of punch and the pace of barrel can not be too big.
3. the capability and performance test analysis of product.First product is carried out various quality testings, surperficial burr situation, the test of tension compressive property, the detection of hardness etc.Qualified then the continuation produces, otherwise carries out the adjustment of technological parameter.
4. accomplish the production of product, and to the surface treatment and the follow-up processing of final drip molding.
Embodiment 1
According to customer requirements, select suitable material, such as aluminium alloy.At first to prepare the cross section and be circular pieces of bar stock.It is the rods and bars of aluminium alloy of φ 62mm that the requirement of considering surface quality and subsequent processes Surface Machining precision can be selected sectional dimension; Follow about length of inferring blank according to plastic forming constancy of volume principle in addition. then according to cup-shape and size, design corresponding mould structure. calculate extruding force and various parameter again.When guaranteeing extruding, the rotary speed of punch keeps certain ratio with the fltting speed of barrel, makes when extruding is accomplished, and punch is perhaps 180 ° of half-twists just.
In process of production, lubricatedly can select molybdenum bisuphide or high-performance nano lubricant for use.After finally confirming that through structure property test precision meets design requirement, such as surface quality is had requirement then can through the machining mode to the processing bar carry out surface treatment, otherwise circular cross-section high-quality teacup can directly be delivered goods.
Embodiment 2
The selection brass alloys are extrded material.
At first to prepare the cross section and be circular pieces of bar stock.Consider the required precision of surface quality and follow-up processing, can select sectional dimension is the copper alloy bar of φ 22, because the plasticity of copper alloy is better, does not heat-treat before the general processing, shortens the production cycle.Based on the plastic deformation constancy of volume, estimate about length of blank equally.According to shape of product and size, design corresponding mould structure then.Calculating extruding force and each technological parameter.Because shell case is a thin-wall part, needs careful selection extrusion speed and temperature during extruding, to guarantee to reach corresponding quality and required precision.
In process of production, lubricatedly can select molybdenum bisuphide or high-performance nano lubricant for use.After finally confirming that through structure property test precision meets design requirement, such as surface quality is had requirement then can through the machining mode to the processing bar carry out surface treatment, otherwise circular cross-section high-quality teacup can directly be delivered goods.
Claims (1)
1. the present invention proposes oppositely pushing and reverse a kind of combination process that extruding combines; Produce and to satisfy client satisfies the requirement that enterprise cuts down the consumption of energy again to the demand of quality product; As militarily can squeeze the high strength shell case; Gun shell can squeeze the high-quality teacup, the various cup shells that need compressive property such as tin can on civilian.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101791788A CN102699084A (en) | 2012-06-01 | 2012-06-01 | Cup-shaped piece prepared through reversed and torsion extrusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101791788A CN102699084A (en) | 2012-06-01 | 2012-06-01 | Cup-shaped piece prepared through reversed and torsion extrusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102699084A true CN102699084A (en) | 2012-10-03 |
Family
ID=46892302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101791788A Pending CN102699084A (en) | 2012-06-01 | 2012-06-01 | Cup-shaped piece prepared through reversed and torsion extrusion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102699084A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537500A (en) * | 2013-10-24 | 2014-01-29 | 河南科技大学 | Extrusion and molding method for cup-shaped part and special extrusion die |
| CN105537307A (en) * | 2015-12-11 | 2016-05-04 | 上海交通大学 | Continuous shearing and reciprocating reverse extrusion combined type machining device and method for preparing pipes |
| CN113083925A (en) * | 2021-04-09 | 2021-07-09 | 中国航发北京航空材料研究院 | Efficient extrusion forming method for rectangular aluminum alloy thin-wall cartridge case |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006016417A1 (en) * | 2004-08-11 | 2006-02-16 | Hitachi, Ltd. | Structure with tubular portion, and method and device for manufacturing the structure |
| JP2007234553A (en) * | 2006-03-03 | 2007-09-13 | Toshiba Shomei Precision Kk | Method of manufacturing electrode |
| CN101912889A (en) * | 2009-06-17 | 2010-12-15 | 苏州昆仑先进制造技术装备有限公司 | Distributive extrusion process method and distributive extrusion mold thereof |
| CN102029301A (en) * | 2010-10-22 | 2011-04-27 | 南京迪威尔重型锻造股份有限公司 | Heat backward extrusion molding process of large-sized cup-shaped piece |
-
2012
- 2012-06-01 CN CN2012101791788A patent/CN102699084A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006016417A1 (en) * | 2004-08-11 | 2006-02-16 | Hitachi, Ltd. | Structure with tubular portion, and method and device for manufacturing the structure |
| JP2007234553A (en) * | 2006-03-03 | 2007-09-13 | Toshiba Shomei Precision Kk | Method of manufacturing electrode |
| CN101912889A (en) * | 2009-06-17 | 2010-12-15 | 苏州昆仑先进制造技术装备有限公司 | Distributive extrusion process method and distributive extrusion mold thereof |
| CN102029301A (en) * | 2010-10-22 | 2011-04-27 | 南京迪威尔重型锻造股份有限公司 | Heat backward extrusion molding process of large-sized cup-shaped piece |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537500A (en) * | 2013-10-24 | 2014-01-29 | 河南科技大学 | Extrusion and molding method for cup-shaped part and special extrusion die |
| CN105537307A (en) * | 2015-12-11 | 2016-05-04 | 上海交通大学 | Continuous shearing and reciprocating reverse extrusion combined type machining device and method for preparing pipes |
| CN113083925A (en) * | 2021-04-09 | 2021-07-09 | 中国航发北京航空材料研究院 | Efficient extrusion forming method for rectangular aluminum alloy thin-wall cartridge case |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10265746B2 (en) | Rotary extrusion producing method for producing inner ring rib with large aspect ratio formed of hollow billet | |
| US10265747B2 (en) | Rotary extrusion producing mold for producing inner ring rib with large aspect ratio formed of hollow billet | |
| CN104015009B (en) | A kind of mobile phone center, the preparation method of bonnet | |
| CN1298452C (en) | Continuously extruding method of magnesium alloy silk material | |
| CN108637031B (en) | mould for preparing high-performance magnesium alloy pipe | |
| CN105127345B (en) | Production method of saloon car transmission combination gear ring | |
| CN105880310B (en) | A kind of mould and forming method of the hollow magnesium alloy profiles of Ultra-fine Grained | |
| CN103934638B (en) | A kind of accurate external splines pipe manufacturing process | |
| CN106624652A (en) | Rotary forging forming method for metal circular plate | |
| CN104907474A (en) | Aluminum alloy wheel forging forming technology | |
| CN103394537B (en) | A kind of preparation method of thin crystalline substance/ultrafine grain metal stratified material | |
| CN103111482B (en) | Preparation method of magnesium alloy seamless pipe and extrusion die thereof | |
| CN102699084A (en) | Cup-shaped piece prepared through reversed and torsion extrusion | |
| CN107030241A (en) | A kind of swager mould and its manufacture method | |
| CN106862863A (en) | A kind of preparation processing method of the ultra-thin titanium alloy shell of great diameter and long | |
| CN102009090A (en) | Reforming mould during extrusion molding of bent pipe | |
| CN102172750A (en) | Magnesium alloy construction member step temperature forming method | |
| CN103658213A (en) | Novel extrusion method for efficiently machining straight spur gear | |
| CN103056214A (en) | Numerical control incremental forming based die-less forming method for special-shaped pipe fittings | |
| CN105234630A (en) | Metal frame profile and machining method thereof | |
| CN104226703A (en) | Method for manufacturing automobile tension bar joint | |
| CN102922223B (en) | Automobile turns to flange sleeve cold-forging technique | |
| CN105951018A (en) | Method for preparing nano-Ti-alloy material by adopting three-angle equal channel angular pressing | |
| CN103071690A (en) | Cold and hot extrusion molding method of rotary thick-walled shell part for vehicle | |
| CN102510695A (en) | Forging and stamping machining method of communication type and consumer electronics type aluminum alloy cavities |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |