CN101559471A - Aluminum alloy complex disc part isothermal precision forging process method - Google Patents

Aluminum alloy complex disc part isothermal precision forging process method Download PDF

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Publication number
CN101559471A
CN101559471A CNA2009100720995A CN200910072099A CN101559471A CN 101559471 A CN101559471 A CN 101559471A CN A2009100720995 A CNA2009100720995 A CN A2009100720995A CN 200910072099 A CN200910072099 A CN 200910072099A CN 101559471 A CN101559471 A CN 101559471A
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Prior art keywords
forging
die
isothermal
time
preliminary
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CNA2009100720995A
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Chinese (zh)
Inventor
徐福昌
单德彬
徐文臣
吕炎
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Harbin Institute of Technology
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Harbin Institute of Technology
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Priority to CNA2009100720995A priority Critical patent/CN101559471A/en
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Abstract

The invention discloses an aluminum alloy complex disc part isothermal precision forging process method, and relates to an aluminum alloy disc part isothermal forging die. The invention solves the problems of streamline turbulence, vortex and percolation of the prior complex disc parts. The process method comprises the following main steps: determining the size of primary fine grain blank; preheating the forging die and the primary fine grain blank; primarily forging isothermal die; performing acid cleaning and mill flashing on primary disc parts; heating the forging die and the primary disc parts; secondarily forging isothermal die; performing acid cleaning, mill flashing and trimming on secondary primary disc parts; heating the forging die and the secondary primary disc parts; tertiarily forging isothermal die; and performing acid cleaning and flash trimming on complex disc parts and performing shape correction. The process method effectively improves the streamlines of forgings, avoids the generation of streamline turbulence, folding, vortex and percolation, streamlines of the formed complex disc parts are distributed along the geometric shapes of the parts, the internals are evenly distributed, and the grain size is even and fine.

Description

Aluminum alloy complex disc part isothermal precision forging process method
Technical field
The present invention relates to a kind of aluminium alloy disc part isothermal process for forging, be specifically related to a kind of aluminum alloy complex disc part isothermal precision forging process method.
Background technology
Al-alloy based low in density, intensity is high and advantage such as good processability, is one of structural metallic materials the most widely during aerospace field is used always.Wing below Moving plate and price fixing in aluminum alloy complex disc part such as certain helicopter, be to adjust a pair of key stressed member that cooperatively interacts of flight attitude, and require the internal metallurgical quality height, grain size is evenly tiny, and require of the geometric shape distribution of the streamline of forging, do not allow streamline turbulence, eddy current and percolation phenomenon and occur along part.Because complex-shaped, specification requirement is high and the forging and molding difficulty is big, common die forging can't be satisfied above-mentioned requirements, must adopt rational Forging Technology and effective measures, qualified forging could be shaped.
Summary of the invention
The objective of the invention is in order to solve streamline turbulence, eddy current and the percolation problem that existing complex disc part exists, and then a kind of aluminum alloy complex disc part isothermal precision forging process method is provided.
The step of a kind of aluminum alloy complex disc part isothermal precision forging process method of the present invention is:
Step 1: determine size of primary fine grain blank;
Step 2: forging die and primary fine grain blank are preheated: in air primary fine grain blank is heated to 430 ± 5 ℃, forging die is installed on the forging press simultaneously, and forging die is heated to 430 ± 5 ℃;
Step 3: isothermal die forging process is shaped for the first time: with forging die surface spraying lubricant, then the blank that is heated to forging temperature is installed in the forging die on the forging press, utilize the heater of forging die self that blank and forging die are proceeded heating, keep forging die and blank in forging range, forging temperature is 430 ± 5 ℃, start forging press then and carry out the isothermal preform first time, tentatively coiled the class part;
Step 4: take out the preliminary dish class part of isothermal die forging process shaping for the first time, and preliminary dish class part is carried out pickling and mills overlap;
Step 5: in air, the preliminary dish class part after the step 4 processing is heated to 430 ± 5 ℃, forging die is heated to 430 ± 5 ℃ simultaneously;
Step 6: isothermal die forging process is shaped for the second time: with forging die surface spraying lubricant, then the preliminary dish class part that is heated to forging temperature is installed in the forging die on the forging press, utilize the heater of forging die self that preliminary dish class part and forging die are proceeded heating, keep forging die and preliminary dish class part in forging range, forging temperature is 430 ± 5 ℃, start forging press then and carry out the isothermal preform second time, obtain time preliminary dish class part;
Step 7: take out time preliminary dish class part of isothermal die forging process shaping for the second time, and inferior preliminary dish class part is carried out pickling, mills overlap and repaiies wound;
Step 8: in air, time preliminary dish class part after the step 7 processing is heated to 430 ± 5 ℃, forging die is heated to 430 ± 5 ℃ simultaneously;
Step 9: isothermal die forging process is shaped for the third time: with forging die surface spraying lubricant, then time preliminary dish class part that is heated to forging temperature is installed in the forging die on the forging press, utilize the heater of forging die self that inferior preliminary dish class part and forging die are proceeded heating, keep forging die and time preliminary dish class part in forging range, forging temperature is 430 ± 5 ℃, start forging press then and carry out isothermal preform for the third time, obtain up-to-standard complexity dish class part;
Step 10: complexity dish class part is carried out pickling and repaiies overlap, carry out school shape then.
The present invention has following beneficial effect: the present invention adopts the heater of forging die self that blank and forging die are proceeded heating, forging die temperature and blank temperature are controlled in the forging range of regulation and forge, the temperature difference is controlled at ± 5 ℃ in, adopt three work step isothermal die forging process forming processes, improved the streamline of forging effectively, avoided the generation of streamline turbulence, folding, eddy current and percolation, the complex disc part streamline distribution that of being shaped distributes along the geometric shape of part, interior tissue is evenly distributed, and grain size is evenly tiny.
Description of drawings
Fig. 1 is the cutaway view of aluminum alloy complex disc part isothermal precision forging mould structure.
The specific embodiment one: the step of the compress control method of a kind of forming aluminum alloy covering part viscoelastic-plastic soft mode of present embodiment is: a kind of step of aluminum alloy complex disc part isothermal precision forging process method is:
Step 1: determine size of primary fine grain blank;
Step 2: forging die and primary fine grain blank are preheated: in air primary fine grain blank is heated to 430 ± 5 ℃, forging die is installed on the forging press simultaneously, and forging die is heated to 430 ± 5 ℃;
Step 3: isothermal die forging process is shaped for the first time: with forging die surface spraying lubricant, then the blank that is heated to forging temperature is installed in the forging die on the forging press, utilize the heater of forging die self that blank and forging die are proceeded heating, keep forging die and blank in forging range, forging temperature is 430 ± 5 ℃, start forging press then and carry out the isothermal preform first time, tentatively coiled the class part;
Step 4: take out the preliminary dish class part of isothermal die forging process shaping for the first time, and preliminary dish class part is carried out pickling and mills overlap;
Step 5: in air, the preliminary dish class part after the step 4 processing is heated to 430 ± 5 ℃, forging die is heated to 430 ± 5 ℃ simultaneously;
Step 6: isothermal die forging process is shaped for the second time: with forging die surface spraying lubricant, then the preliminary dish class part that is heated to forging temperature is installed in the forging die on the forging press, utilize the heater of forging die self that preliminary dish class part and forging die are proceeded heating, keep forging die and preliminary dish class part in forging range, forging temperature is 430 ± 5 ℃, start forging press then and carry out the isothermal preform second time, obtain time preliminary dish class part;
Step 7: take out time preliminary dish class part of isothermal die forging process shaping for the second time, and inferior preliminary dish class part is carried out pickling, mills overlap and repaiies wound;
Step 8: in air, time preliminary dish class part after the step 7 processing is heated to 430 ± 5 ℃, forging die is heated to 430 ± 5 ℃ simultaneously;
Step 9: isothermal die forging process is shaped for the third time: with forging die surface spraying lubricant, then time preliminary dish class part that is heated to forging temperature is installed in the forging die on the forging press, utilize the heater of forging die self that inferior preliminary dish class part and forging die are proceeded heating, keep forging die and time preliminary dish class part in forging range, forging temperature is 430 ± 5 ℃, start forging press then and carry out isothermal preform for the third time, obtain up-to-standard complexity dish class part;
Step 10: complexity dish class part is carried out pickling and repaiies overlap, carry out school shape then.
The employed aluminum alloy complex disc part isothermal precision forging mould of said method comprises upper padding plate 2, last forging die 3, lower bolster 9, anvil tool 10, guide pin bushing 4 and guide pillar 5, the described forging die 3 of going up installs with forcing press upper table 1, be provided with upper padding plate 2 between last forging die 3 and the forcing press upper table 1, described anvil tool 10 installs with forcing press lower table 8, be provided with lower bolster 9 between anvil tool 10 and the forcing press lower table 8, described going up on the forging die 3 has guide pin bushing installing hole 3-1, guide pin bushing 4 is packed in the guide pin bushing installing hole 3-1, have guide pillar installing hole 10-1 on the described anvil tool 10, the lower end of described guide pillar 5 is packed in the guide pillar installing hole 10-1, slide in guide pin bushing 4 in the upper end of guide pillar 5, the described forging die 3 of going up leads by guide pillar 5 and guide pin bushing 4 with anvil tool 10, described profile 3-2 and the formation die cavity 12 corresponding with the profile 10-2 of anvil tool 10 of going up forging die 3; Gross weight 13 places of described die cavity 12 are provided with material and stockpile storehouse 14, described finish forge mould also comprises many resistance wires 11, asbestos board 6 and silicate aluminum board 7, described going up in forging die 3 and the anvil tool 10 is provided with many resistance wires 11, every resistance wire 11 all is connected with external power source, and described silicate aluminum board 7 and asbestos board 6 are coated on the surface of finish forge mould from the inside to the outside.The die joint 15 of described finish forge mould adopts the staged die joint.The thickness of described silicate aluminum board 7 is 3mm~7mm, and the thickness of described asbestos board 6 is 20mm~30mm.
The specific embodiment two: the difference of the present embodiment and the specific embodiment one is: the forging pressure that forging press provides in the step 3 of present embodiment, step 6 and the step 9 is 10000KN~30000KN, and blank, the strain rate of tentatively coiling class part and inferior preliminary dish class part are 9 * 10 -4~1.2 * 10 -4Forming effect is good.
The specific embodiment three: the difference of the present embodiment and the specific embodiment one is: the deflection that the deflection of the isothermal die forging process shaping second time of the deflection that the first time of the step 3 of present embodiment, isothermal die forging process was shaped, step 6 and the isothermal die forging process for the third time of step 9 are shaped is 30%~60%.Prevented more effectively that forging is folding, eddy current and percolation.
The specific embodiment four: the difference of the present embodiment and the specific embodiment one is: the forging die of present embodiment adopts the 5CrNiMo hot die steel to make.It is better to be shaped.Other composition is identical with the specific embodiment one with annexation.

Claims (4)

1, a kind of aluminum alloy complex disc part isothermal precision forging process method is characterized in that steps of the method are:
Step 1: determine size of primary fine grain blank;
Step 2: forging die and primary fine grain blank are preheated: in air primary fine grain blank is heated to 430 ± 5 ℃, forging die is installed on the forging press simultaneously, and forging die is heated to 430 ± 5 ℃;
Step 3: isothermal die forging process is shaped for the first time: with forging die surface spraying lubricant, then the blank that is heated to forging temperature is installed in the forging die on the forging press, utilize the heater of forging die self that blank and forging die are proceeded heating, keep forging die and blank in forging range, forging temperature is 430 ± 5 ℃, start forging press then and carry out the isothermal preform first time, tentatively coiled the class part;
Step 4: take out the preliminary dish class part of isothermal die forging process shaping for the first time, and preliminary dish class part is carried out pickling and mills overlap;
Step 5: in air, the preliminary dish class part after the step 4 processing is heated to 430 ± 5 ℃, forging die is heated to 430 ± 5 ℃ simultaneously;
Step 6: isothermal die forging process is shaped for the second time: with forging die surface spraying lubricant, then the preliminary dish class part that is heated to forging temperature is installed in the forging die on the forging press, utilize the heater of forging die self that preliminary dish class part and forging die are proceeded heating, keep forging die and preliminary dish class part in forging range, forging temperature is 430 ± 5 ℃, start forging press then and carry out the isothermal preform second time, obtain time preliminary dish class part;
Step 7: take out time preliminary dish class part of isothermal die forging process shaping for the second time, and inferior preliminary dish class part is carried out pickling, mills overlap and repaiies wound;
Step 8: in air, time preliminary dish class part after the step 7 processing is heated to 430 ± 5 ℃, forging die is heated to 430 ± 5 ℃ simultaneously;
Step 9: isothermal die forging process is shaped for the third time: with forging die surface spraying lubricant, then time preliminary dish class part that is heated to forging temperature is installed in the forging die on the forging press, utilize the heater of forging die self that inferior preliminary dish class part and forging die are proceeded heating, keep forging die and time preliminary dish class part in forging range, forging temperature is 430 ± 5 ℃, start forging press then and carry out isothermal preform for the third time, obtain up-to-standard complexity dish class part;
Step 10: complexity dish class part is carried out pickling and repaiies overlap, carry out school shape then.
2, according to the described aluminum alloy complex disc part isothermal precision forging process method of claim 1, it is characterized in that: the forging pressure that forging press provides in described step 3, step 6 and the step 9 is 10000KN~30000KN, and initial strain rate is 9 * 10 -4~1.2 * 10 -4
3, according to claim 1 or 2 described aluminum alloy complex disc part isothermal precision forging process methods, it is characterized in that: the deflection that the deflection of the isothermal die forging process shaping second time of the deflection that the first time of described step 3, isothermal die forging process was shaped, step 6 and the isothermal die forging process for the third time of step 9 are shaped is 30%~60%.
4, according to claim 1 or 2 described aluminum alloy complex disc part isothermal precision forging process methods, it is characterized in that: described forging die adopts the 5CrNiMo hot die steel to make.
CNA2009100720995A 2009-05-22 2009-05-22 Aluminum alloy complex disc part isothermal precision forging process method Pending CN101559471A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102312181A (en) * 2011-09-07 2012-01-11 上海交通大学 Isothermal forging method of TiAl alloy
CN102430677A (en) * 2011-10-27 2012-05-02 哈尔滨中飞新技术股份有限公司 Aluminum alloy constant-temperature fine die forging process
CN102441630A (en) * 2011-09-15 2012-05-09 河南理工大学 Near net shape process for aluminum alloy parts of prosthetic knee of human body
CN102554113A (en) * 2010-12-24 2012-07-11 沈阳黎明航空发动机(集团)有限责任公司 Precise forming method of high-temperature alloy mounting seat
CN105397001A (en) * 2015-12-02 2016-03-16 贵州安大航空锻造有限责任公司 Isothermal forging forming method of titanium alloy complex sheet forged piece
CN105414435A (en) * 2015-12-30 2016-03-23 哈尔滨工业大学 Isothermal die-forging forming die and method for 7A09 aluminum alloy rocker arm provided with long walls, deep ribs and box-shaped ball head
CN105478642A (en) * 2015-12-02 2016-04-13 贵州安大航空锻造有限责任公司 Isothermal forging forming method for clamping plate forge piece made of 2024 aluminum matrix composite
CN106077385A (en) * 2016-08-03 2016-11-09 第拖拉机股份有限公司 A kind of detachable electric radiation formula forging die heater and method for determining size
CN106938310A (en) * 2017-03-23 2017-07-11 遵义航天新力精密铸锻有限公司 The finish forge processing method of aviation aircraft connecting seat
CN108127061A (en) * 2017-11-20 2018-06-08 湖州亨达铝业有限公司 A kind of kneed preparation method of human body artificial limb aluminium alloy
CN109622840A (en) * 2018-12-11 2019-04-16 陕西宏远航空锻造有限责任公司 A kind of complicated 7075 aluminum alloy casing isothermy die forging methods of the more muscle classes of large size
CN110000324A (en) * 2019-04-12 2019-07-12 哈尔滨工业大学 A kind of radial rib shell forging isothermal die forging process forming control method
CN111790864A (en) * 2020-07-07 2020-10-20 福建祥鑫股份有限公司 Forging method for improving oxidation resistance and electric breakdown performance of 6-series alloy
CN111872300A (en) * 2020-05-25 2020-11-03 哈尔滨工业大学 Progressive loading precision forming die device and process method for complex components of ultra-long grid high-rib wallboard
CN112974699A (en) * 2021-02-18 2021-06-18 哈尔滨工业大学 Precise hot forming method for metal forging with approximately semi-elliptical thin web and large rib spacing

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102554113A (en) * 2010-12-24 2012-07-11 沈阳黎明航空发动机(集团)有限责任公司 Precise forming method of high-temperature alloy mounting seat
CN102554113B (en) * 2010-12-24 2014-03-19 沈阳黎明航空发动机(集团)有限责任公司 Precise forming method of high-temperature alloy mounting seat
CN102312181A (en) * 2011-09-07 2012-01-11 上海交通大学 Isothermal forging method of TiAl alloy
CN102312181B (en) * 2011-09-07 2013-02-27 上海交通大学 Isothermal forging method of TiAl alloy
CN102441630A (en) * 2011-09-15 2012-05-09 河南理工大学 Near net shape process for aluminum alloy parts of prosthetic knee of human body
CN102441630B (en) * 2011-09-15 2013-08-14 河南理工大学 Near net shape process for aluminum alloy parts of prosthetic knee of human body
CN102430677A (en) * 2011-10-27 2012-05-02 哈尔滨中飞新技术股份有限公司 Aluminum alloy constant-temperature fine die forging process
CN105397001A (en) * 2015-12-02 2016-03-16 贵州安大航空锻造有限责任公司 Isothermal forging forming method of titanium alloy complex sheet forged piece
CN105478642A (en) * 2015-12-02 2016-04-13 贵州安大航空锻造有限责任公司 Isothermal forging forming method for clamping plate forge piece made of 2024 aluminum matrix composite
CN105414435A (en) * 2015-12-30 2016-03-23 哈尔滨工业大学 Isothermal die-forging forming die and method for 7A09 aluminum alloy rocker arm provided with long walls, deep ribs and box-shaped ball head
CN106077385A (en) * 2016-08-03 2016-11-09 第拖拉机股份有限公司 A kind of detachable electric radiation formula forging die heater and method for determining size
CN106938310A (en) * 2017-03-23 2017-07-11 遵义航天新力精密铸锻有限公司 The finish forge processing method of aviation aircraft connecting seat
CN108127061A (en) * 2017-11-20 2018-06-08 湖州亨达铝业有限公司 A kind of kneed preparation method of human body artificial limb aluminium alloy
CN109622840A (en) * 2018-12-11 2019-04-16 陕西宏远航空锻造有限责任公司 A kind of complicated 7075 aluminum alloy casing isothermy die forging methods of the more muscle classes of large size
CN110000324A (en) * 2019-04-12 2019-07-12 哈尔滨工业大学 A kind of radial rib shell forging isothermal die forging process forming control method
CN110000324B (en) * 2019-04-12 2020-05-19 哈尔滨工业大学 Isothermal die forging forming control method for radial rib shell forge piece
CN111872300A (en) * 2020-05-25 2020-11-03 哈尔滨工业大学 Progressive loading precision forming die device and process method for complex components of ultra-long grid high-rib wallboard
CN111790864A (en) * 2020-07-07 2020-10-20 福建祥鑫股份有限公司 Forging method for improving oxidation resistance and electric breakdown performance of 6-series alloy
CN112974699A (en) * 2021-02-18 2021-06-18 哈尔滨工业大学 Precise hot forming method for metal forging with approximately semi-elliptical thin web and large rib spacing
CN112974699B (en) * 2021-02-18 2021-09-10 哈尔滨工业大学 Precise hot forming method for metal forging with approximately semi-elliptical thin web and large rib spacing

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Open date: 20091021