CN100998997A - Technology method for delivery state aluminium alloy overplastic extrusion shaping - Google Patents
Technology method for delivery state aluminium alloy overplastic extrusion shaping Download PDFInfo
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- CN100998997A CN100998997A CN 200610161296 CN200610161296A CN100998997A CN 100998997 A CN100998997 A CN 100998997A CN 200610161296 CN200610161296 CN 200610161296 CN 200610161296 A CN200610161296 A CN 200610161296A CN 100998997 A CN100998997 A CN 100998997A
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Abstract
A superplastic die pressing technology for forming Al-alloy product includes such steps as optimizing the quantity of raw material according to product structure, heating the closed die set to 100-120 deg.C, opening the die set, spraying water-base graphite lubricant, closing it, heating it to optimal superplastic temp of Al-alloy, holding the temp, pre-heating raw material to 120-150 deg.C, coating water-base graphite lubricant, heating it to optimal superplastic temp, loading it in lower die, closing die set, fast pressing for a certain time, and opening the die set to obtain product.
Description
Technical field
Super extrusion modling---the process of delivery state aluminium alloy overplastic extrusion shaping of moulding that the present invention relates to that a kind of direct employing supply of material attitude aluminium alloy realizes thin-walled, complex casing class part.
Background technology
Metal carries out extrusion molding and has tangible advantage under the superplasticity state, mainly be: the metal deformation drag is little; Good fluidity; Fillibility is good, can go out big, the complex-shaped part of deflection by an extrusion molding; No residual stress and rebound behind the part forming, parts size precision is higher; The back part interior tissue that is shaped is even, and crystal grain is tiny, has improved metallicity.But this technical process has such problem, and metal must possess the superplasticity organization condition before the extruding.
Japanese Patent No. J59067487 adopts the superplastic aluminum alloy to realize the superplastic extrusion processing of complicated watchcase, is the aluminium alloy that possesses the superplasticity condition but its adopts, but not supply of material attitude aluminium alloy.Supply of material attitude aluminium alloy does not possess the superplasticity organization condition, and in order to satisfy the superplasticity organization condition, conventional method is to carry out the superplasticity preliminary treatment, and as operations such as the crystallizations of solution treatment-overaging-rolling-again, complex process and require highly is not suitable for actual production very much.
Summary of the invention
The object of the invention is, overcomes the technological deficiency that prior art exists, and provides a kind of direct employing supply of material attitude aluminium alloy to realize the process of complex casing class part superplastic forming, and it need not to carry out complicated superplasticity preliminary treatment.
The technical thought of the present invention for realizing that goal of the invention adopted: at a certain temperature, press slide presses down fast, until a certain setting pressure, at this moment, blank is through distortion fast, inner crystal grain fragmentation, dislocation density increases, and causes that the strain energy of alloy interior tissue increases, thereby dynamic recrystallization takes place, dynamic recrystallization be the advantage of keeping the fine-grain size, prepare for the extruding of the superplasticity in later stage provides necessary tissue.Then with this pressure pressurize appropriate time, this pressure maintaining period is equivalent to the superplasticity extrusion process, and the speed that presses down is less, and flow stress is less, and fillibility is good, helps the shaping of complex parts.
The process of delivery state aluminium alloy overplastic extrusion shaping of the present invention, its processing step is as follows:
A, according to the structure of drip molding, the optimal design volume distributes rational blank;
B, with the mold heated of matched moulds state, when temperature rises to 100～120 ℃, open mould, in die cavity, spray colloidal graphite mixed with water; Matched moulds again continues the optimum hyper-plastic temperature of heat temperature raising to the aluminium alloy that adopts, generally between 420～490 ℃, and temperature homogeneity ± 5 ℃, and be incubated;
C, the blank of optimal design is carried out preheating in preheating furnace, when temperature is heated to 120～150 ℃, takes out blank and also brush colloidal graphite mixed with water; To brush good blank then and put into preheating furnace again, continue to be heated to the optimum hyper-plastic temperature, and insulation;
D, open mould, will sandwich in the lower die-sleeve 5 at the blank of superplastic forming preheating temperature, and closed die fast;
E, direct also being pressurized to are fast tested the pressure of determining, and in this pressure pressurize, can divide mould to take out drip molding then.
Process of the present invention need not to carry out complicated superplasticity preliminary treatment owing to directly adopt supply of material attitude aluminium alloy, so technology is simplified greatly, production cost reduces greatly; Owing to adopt the method for total extruding force control extrusion speed, both satisfied and pushed the technological requirement that produces dynamic recrystallization early stage, satisfied the superplastic forming technology requirement of extruding later stage again, make that on the one hand operation is more convenient, adopt conventional press to get final product on the other hand, need not to adopt special-purpose press with speed governing; Because work simplification, easy to operate, so be fit to suitability for industrialized production.
Description of drawings
Fig. 1 is the profile of superplasticity extrusion molding apparatus.1, the 8th, the water-cooled cold drawing prevents that heat is to the hydraulic press transmission; 2, the 7th, the heating plate of mold for extruding and forming; 3, the 6th, the backing plate of mould up and down, the 4th, punch; The 5th, the counterdie die sleeve; The 9th, knock-pin; The 10th, the counterdie core rod; The 11st, Forming Workpiece.
Fig. 2 is the T/R assembly housing sheet figure of certain model radar.
Fig. 3 is a superplastic extrusion processing blank picture.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Embodiment 1, with the inventive method processing T/R assembly housing.The super extrusion die of moulding as shown in Figure 1 is installed on 200 tons of hydraulic presses, and by the diagram matched moulds, connects the heating plate power supply, heated mould when temperature rises to 100～120 ℃, is opened mould, sprays colloidal graphite mixed with water in die cavity; Matched moulds continues heat temperature raising to 480～490 ℃ insulation again; Fig. 3 blank that will be heated to 480 ℃ of also insulations, brushing colloidal graphite mixed with water in preheating furnace sandwiches rapidly in the lower die-sleeve 5; Quick closed die, and be pressurized to 180 tons fast with hydraulic press, this pressure pressurize 45 seconds, can divide mould; Eject workpiece as shown in Figure 2 with knock-pin 9 at last.
Claims (1)
1, a kind of process of delivery state aluminium alloy overplastic extrusion shaping, its processing step is as follows:
A, according to the structure of drip molding, the optimal design volume distributes rational blank;
B, with the mold heated of matched moulds state, when temperature rises to 100～120 ℃, open mould, in die cavity, spray colloidal graphite mixed with water; Matched moulds again continues between heat temperature raising to 420～490 ℃, temperature homogeneity ± 5 ℃, and insulation;
C, blank is carried out preheating in preheating furnace, when temperature is heated to 120～150 ℃, takes out blank and also brush colloidal graphite mixed with water; To brush good blank then and put into preheating furnace again, continue to be heated to the optimum hyper-plastic temperature, and insulation;
D, open mould, will sandwich in the lower die-sleeve at the blank of superplastic forming preheating temperature, and closed die fast;
E, direct also being pressurized to are fast tested the pressure of determining, and in this pressure pressurize, divide mould to take out drip molding then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610161296 CN100998997A (en) | 2006-12-20 | 2006-12-20 | Technology method for delivery state aluminium alloy overplastic extrusion shaping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610161296 CN100998997A (en) | 2006-12-20 | 2006-12-20 | Technology method for delivery state aluminium alloy overplastic extrusion shaping |
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| Publication Number | Publication Date |
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| CN100998997A true CN100998997A (en) | 2007-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200610161296 Pending CN100998997A (en) | 2006-12-20 | 2006-12-20 | Technology method for delivery state aluminium alloy overplastic extrusion shaping |
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| CN (1) | CN100998997A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101579907A (en) * | 2008-05-16 | 2009-11-18 | 鸿富锦精密工业（深圳）有限公司 | Die parting device |
| CN102059266A (en) * | 2010-11-23 | 2011-05-18 | 张文丛 | Extrusion deformation method of aluminium alloy profile |
| CN102430694A (en) * | 2011-11-15 | 2012-05-02 | 洛阳秦汉冷锻有限公司 | Extruding process of aluminum alloy air cylinder blank |
| CN102513393A (en) * | 2011-12-23 | 2012-06-27 | 成都泰格微波技术股份有限公司 | Manufacture method for microminiature millimeter wave waveguide device |
| CN101786128B (en) * | 2010-02-25 | 2012-08-22 | 机械科学研究总院先进制造技术研究中心 | Hot stamping and superplastic gas-bulging combined forming process |
| TWI409153B (en) * | 2008-05-30 | 2013-09-21 | Hon Hai Prec Ind Co Ltd | Separating die device |
| CN109334413A (en) * | 2018-08-21 | 2019-02-15 | 靖江市新程汽车零部件有限公司 | Car front/rear door Novel crashproof bar |
| CN116944318A (en) * | 2023-09-18 | 2023-10-27 | 托伦斯半导体设备启东有限公司 | Aluminum blank extrusion molding equipment |
-
2006
- 2006-12-20 CN CN 200610161296 patent/CN100998997A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101579907A (en) * | 2008-05-16 | 2009-11-18 | 鸿富锦精密工业（深圳）有限公司 | Die parting device |
| CN101579907B (en) * | 2008-05-16 | 2013-05-08 | 鸿富锦精密工业（深圳）有限公司 | Die parting device |
| TWI409153B (en) * | 2008-05-30 | 2013-09-21 | Hon Hai Prec Ind Co Ltd | Separating die device |
| CN101786128B (en) * | 2010-02-25 | 2012-08-22 | 机械科学研究总院先进制造技术研究中心 | Hot stamping and superplastic gas-bulging combined forming process |
| CN102059266A (en) * | 2010-11-23 | 2011-05-18 | 张文丛 | Extrusion deformation method of aluminium alloy profile |
| CN102430694A (en) * | 2011-11-15 | 2012-05-02 | 洛阳秦汉冷锻有限公司 | Extruding process of aluminum alloy air cylinder blank |
| CN102513393A (en) * | 2011-12-23 | 2012-06-27 | 成都泰格微波技术股份有限公司 | Manufacture method for microminiature millimeter wave waveguide device |
| CN109334413A (en) * | 2018-08-21 | 2019-02-15 | 靖江市新程汽车零部件有限公司 | Car front/rear door Novel crashproof bar |
| CN116944318A (en) * | 2023-09-18 | 2023-10-27 | 托伦斯半导体设备启东有限公司 | Aluminum blank extrusion molding equipment |
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Open date: 20070718 |