CN102989985A - Cold extrusion moulding process of aluminium alloy complex cup-shaped thin-wall part - Google Patents
Cold extrusion moulding process of aluminium alloy complex cup-shaped thin-wall part Download PDFInfo
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- CN102989985A CN102989985A CN2011102778184A CN201110277818A CN102989985A CN 102989985 A CN102989985 A CN 102989985A CN 2011102778184 A CN2011102778184 A CN 2011102778184A CN 201110277818 A CN201110277818 A CN 201110277818A CN 102989985 A CN102989985 A CN 102989985A
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Abstract
The invention discloses a cold extrusion moulding process of an aluminium alloy complex cup-shaped thin-wall part. The cold extrusion moulding process includes the steps that a male die and a female die are mounted on forging equipment which can be a 3150T electric screw press or a 2500T hydraulic press, the distance and offset of the dies are adjusted, and the dies are lubricated by lubricant industrial lard; a softened cold round bar stock with a diameter of 200mm is put into the female die under room temperature; under the pressure action of the equipment, the metal flows in the female die until the cavity is full of metal and the excess metal is extruded backward to the space between the male die and the female die, forming a flange at the opening of the forged piece; and after the stroke of the equipment is over, the metal no longer flows and forms the shape and the size of a final cold extruded piece. The cold extrusion moulding process has the advantages that the size and the property of the aluminium alloy forged piece produced through the process satisfy the requirement of the design drawing, the aluminium alloy forged piece has high surface roughness and dimensional precision; and most of all, the consumption of raw material is greatly reduced, the forging procedure is reduced, processing time is saved during the mechanical processing procedure and the processing period is shortened.
Description
Technical field
The present invention relates to cold-extrusion technology, provide especially a kind of aluminum alloy complex cup-shaped thin-wall part cold extrusion technology.
Background technology
Complicated cup-shaped thin-wall part is a kind of part type in the Aeroengine Products, profile is nonlinear thin wall shape structure, after traditional forming mode is the bar heating, be forged into the forging that is close to solid cylindrical shape at flat-die hammer, stock utilization is extremely low, usually less than 5%, and machining amount is large simultaneously, and the production cycle is long.
Summary of the invention
The objective of the invention is by particular manufacturing craft bar direct cold upsetting extrusion at room temperature, make shape more near the cup-shaped thin-wall part of External Shape.Compare with open die forgings, cold-extruded part can be saved raw material metal greatly, reduce the machining amount, metallurgical performance is suitable, and have comparatively desirable surface roughness and a dimensional accuracy, productivity ratio is higher, is convenient to automation and produces in enormous quantities, and the spy provides a kind of aluminum alloy complex cup-shaped thin-wall part cold extrusion technology.
The invention provides the cup-shaped thin-wall part cold extrusion technology of a kind of aluminum alloy complex, it is characterized in that: the cup-shaped thin-wall part cold extrusion technology of described aluminum alloy complex is, at first punch, die are installed on the forging equipment, select the 3150T electric screw press, or 2500T hydraulic press, adjust die clearance and offsetting, with lubricator the lubricated mould of industrial lard; Adjustment equipment when using the 3150T electric screw press, transfers to 30% with its blow energy, and when using the 2500T hydraulic press, energy reserving is maximum, and speed is 2-8mm/s; Then at ambient temperature, be 200mm with diameter, and the softening cold conditions round bar of processing is put into die; Metal flows in die until be full of die cavity under the equipment pressure-acting, excess metal again by backward extrusion between the punch and matrix, form the flange of forging opening part; After device travel finished, metal was no longer mobile, forms profile and the size of final cold-extruded part.
The softening processing mode of the cold conditions round bar of described softening processing is, bar is heated to 400～500 ℃, is incubated about annealing schedule that was cooled to again 150 ℃ of right sides in 4 hours with stove.
The inwall of described final cold-extruded part is similar to the part radian, has increased 3mm～5mm surplus with respect to part.
The cup-shaped thin-wall part cold extrusion technology of described aluminum alloy complex, structurally consider the unit pressure that backward extrusion is larger, and workpiece such as easily is stuck in the punch and matrix at the problem, all transition portions design enough large radius of corner, radius of corner is greater than 20 millimeters, and mould and extrusion contact surface roughness are 0.8.
Advantage of the present invention:
The cup-shaped thin-wall part cold extrusion technology of aluminum alloy complex of the present invention, the aluminum alloy forge piece size of producing, performance satisfies the requirement of design drawing, surface roughness and dimensional accuracy are all higher, especially greatly reduce raw materials consumption, to carry out the deflection cone forging as example, the more original flat-die forging forming mode of stock utilization has improved about more than 60%, heating in the time of can avoiding common forge hot in the production, reduced forging process, can save machining period with the added-time on opportunity, shorten the process-cycle, this cold-extrusion shaping technology also can be applicable in other shape forging productions of same type of material.
Description of drawings
The present invention is further detailed explanation below in conjunction with drawings and the embodiments:
Fig. 1 is blank placement location schematic diagram in mould;
Fig. 2 is blank Extrusion Forging Deformation schematic diagram in mould;
Fig. 3 is blank final shaping schematic diagram in mould;
Among the figure, 1 is punch, and 2 is blank, and 3 is die.
The specific embodiment
Embodiment 1
Present embodiment provides a kind of aluminum alloy complex cup-shaped thin-wall part cold extrusion technology, it is characterized in that: the cup-shaped thin-wall part cold extrusion technology of described aluminum alloy complex is, at first punch, die are installed on the forging equipment, select the 3150T electric screw press, or 2500T hydraulic press, adjust die clearance and offsetting, with lubricator the lubricated mould of industrial lard; Adjustment equipment when using the 3150T electric screw press, transfers to 30% with its blow energy; Then at ambient temperature, be 200mm with diameter, and the softening cold conditions round bar of processing is put into die; Metal flows in die until be full of die cavity under the equipment pressure-acting, excess metal again by backward extrusion between the punch and matrix, form the flange of forging opening part; After device travel finished, metal was no longer mobile, forms profile and the size of final cold-extruded part.
The softening processing mode of the cold conditions round bar of described softening processing is, bar is heated to 400～500 ℃, is incubated about annealing schedule that was cooled to again 150 ℃ of right sides in 4 hours with stove.
The inwall of described final cold-extruded part is similar to the part radian, has increased 3mm～5mm surplus with respect to part.
The cup-shaped thin-wall part cold extrusion technology of described aluminum alloy complex, structurally consider the unit pressure that backward extrusion is larger, and workpiece such as easily is stuck in the punch and matrix at the problem, all transition portions design enough large radius of corner, radius of corner is greater than 20 millimeters, and mould and extrusion contact surface roughness are 0.8.
Present embodiment provides a kind of aluminum alloy complex cup-shaped thin-wall part cold extrusion technology, it is characterized in that: the cup-shaped thin-wall part cold extrusion technology of described aluminum alloy complex is, at first punch, die are installed on the forging equipment, select the 3150T electric screw press, or 2500T hydraulic press, adjust die clearance and offsetting, with lubricator the lubricated mould of industrial lard; Adjustment equipment uses the 2500T hydraulic press, and energy reserving is maximum, and speed is 2-8mm/s; Then at ambient temperature, be 200mm with diameter, and the softening cold conditions round bar of processing is put into die; Metal flows in die until be full of die cavity under the equipment pressure-acting, excess metal again by backward extrusion between the punch and matrix, form the flange of forging opening part; After device travel finished, metal was no longer mobile, forms profile and the size of final cold-extruded part.
The softening processing mode of the cold conditions round bar of described softening processing is, bar is heated to 400～500 ℃, is incubated about annealing schedule that was cooled to again 150 ℃ of right sides in 4 hours with stove.
The inwall of described final cold-extruded part is similar to the part radian, has increased 3mm～5mm surplus with respect to part.
The cup-shaped thin-wall part cold extrusion technology of described aluminum alloy complex, structurally consider the unit pressure that backward extrusion is larger, and workpiece such as easily is stuck in the punch and matrix at the problem, all transition portions design enough large radius of corner, radius of corner is greater than 20 millimeters, and mould and extrusion contact surface roughness are 0.8.
Claims (4)
1. cup-shaped thin-wall part cold extrusion technology of aluminum alloy complex, it is characterized in that: the cup-shaped thin-wall part cold extrusion technology of described aluminum alloy complex is, at first punch, die are installed on the forging equipment, select the 3150T electric screw press, or 2500T hydraulic press, adjust die clearance and offsetting, with lubricator the lubricated mould of industrial lard; Adjustment equipment when using the 3150T electric screw press, transfers to 30% with its blow energy, and when using the 2500T hydraulic press, energy reserving is maximum, and speed is 2-8mm/s; Then at ambient temperature, be 200mm with diameter, and the softening cold conditions round bar of processing is put into die; Metal flows in die until be full of die cavity under the equipment pressure-acting, excess metal again by backward extrusion between the punch and matrix, form the flange of forging opening part; After device travel finished, metal was no longer mobile, forms profile and the size of final cold-extruded part.
2. according to the cup-shaped thin-wall part cold extrusion technology of aluminum alloy complex claimed in claim 1, it is characterized in that: the softening processing mode of the cold conditions round bar of described softening processing is, bar is heated to 400～500 ℃, is incubated about annealing schedule that was cooled to again 150 ℃ of right sides in 4 hours with stove.
3. according to the cup-shaped thin-wall part cold extrusion technology of aluminum alloy complex claimed in claim 1, it is characterized in that: the inwall of described final cold-extruded part is similar to the part radian, has increased 3mm～5mm surplus with respect to part.
4. according to the cup-shaped thin-wall part cold extrusion technology of aluminum alloy complex claimed in claim 1, it is characterized in that: the cup-shaped thin-wall part cold extrusion technology of described aluminum alloy complex, structurally consider the unit pressure that backward extrusion is larger, and workpiece such as easily is stuck in the punch and matrix at the problem, all transition portions design enough large radius of corner, radius of corner is greater than 20 millimeters, and mould and extrusion contact surface roughness are 0.8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102778184A CN102989985A (en) | 2011-09-19 | 2011-09-19 | Cold extrusion moulding process of aluminium alloy complex cup-shaped thin-wall part |
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| CN2011102778184A CN102989985A (en) | 2011-09-19 | 2011-09-19 | Cold extrusion moulding process of aluminium alloy complex cup-shaped thin-wall part |
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| CN102989985A true CN102989985A (en) | 2013-03-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439946A (en) * | 2014-11-12 | 2015-03-25 | 重庆理工大学 | Method for forming aluminum alloy conical sheet special-shaped part |
| CN107338403A (en) * | 2016-04-29 | 2017-11-10 | 宇龙计算机通信科技(深圳)有限公司 | A kind of processing method and aluminum alloy battery cover plate of Al-alloy parts shaping |
| 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 |
| CN113732221A (en) * | 2021-09-07 | 2021-12-03 | 吉林大学 | Cold extrusion forming process for aluminum alloy complex cup-shaped thin-wall part |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996011757A1 (en) * | 1994-10-13 | 1996-04-25 | British Aluminium Holdings Limited | Backward extrusion method and product |
| CN101428302A (en) * | 2008-10-31 | 2009-05-13 | 长安汽车（集团）有限责任公司 | Aldural conical thin-wall member workblank extrusion forming process |
-
2011
- 2011-09-19 CN CN2011102778184A patent/CN102989985A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996011757A1 (en) * | 1994-10-13 | 1996-04-25 | British Aluminium Holdings Limited | Backward extrusion method and product |
| CN101428302A (en) * | 2008-10-31 | 2009-05-13 | 长安汽车（集团）有限责任公司 | Aldural conical thin-wall member workblank extrusion forming process |
Non-Patent Citations (2)
| Title |
|---|
| 刘兆红: "硬铝合金薄壁杯形件成形工艺与模具", 《金属成型工艺》 * |
| 曾宪文等: "熔断器铝帽冷挤压工艺及模具设计", 《模具工业》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439946A (en) * | 2014-11-12 | 2015-03-25 | 重庆理工大学 | Method for forming aluminum alloy conical sheet special-shaped part |
| CN107338403A (en) * | 2016-04-29 | 2017-11-10 | 宇龙计算机通信科技(深圳)有限公司 | A kind of processing method and aluminum alloy battery cover plate of Al-alloy parts shaping |
| 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 |
| CN113732221A (en) * | 2021-09-07 | 2021-12-03 | 吉林大学 | Cold extrusion forming process for aluminum alloy complex cup-shaped thin-wall part |
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Application publication date: 20130327 |