CN110814245B - Forging method of aluminum alloy forging - Google Patents
Forging method of aluminum alloy forging Download PDFInfo
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- CN110814245B CN110814245B CN201911076626.XA CN201911076626A CN110814245B CN 110814245 B CN110814245 B CN 110814245B CN 201911076626 A CN201911076626 A CN 201911076626A CN 110814245 B CN110814245 B CN 110814245B
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- blank
- forging
- heating
- aluminum alloy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
- B21J5/025—Closed die forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
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- 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
Abstract
The invention discloses a forging method of an aluminum alloy forging, which comprises the following steps of S1: blanking; s2: heating before forging; s3: forging, wherein the initial forging temperature is 450 ℃, the final forging temperature is 400 ℃, three-drawing and three-pier operation is adopted, the blank is forged into a sheet shape, and the thickness of the forged blank is 0.5-1cm larger than that of a workpiece; s4: performing rapid die cutting, namely die cutting a plurality of unit blanks on the sheet blank by using a hydraulic die cutter, feeding the redundant leftover materials into a natural gas heating furnace, heating and preserving heat to continue to be used as a next batch of forged blanks; s5: returning and heating, S6: forming a blank; s7: cooling, namely cooling the blank on a spinning machine to below 180 ℃, taking the blank out of the spinning machine, and cooling to room temperature; s8: solution treatment; s9: and (5) after machining, performing appearance inspection, marking and warehousing.
Description
Technical Field
The invention relates to a forging method of an aluminum alloy forging.
Background
In the prior art, the processing of aluminum alloy workpieces comprises a forging method and a casting method, wherein the casting method comprises gravity casting and low-pressure casting, but with the continuous development of aluminum alloy technology, the gravity casting method is basically eliminated by the market, and a plurality of better forming methods are widely used. Under the same condition, compared with the aluminum alloy produced by a gravity casting molding method, the aluminum alloy produced by the low-pressure casting molding method has denser structural structure and better mechanical property. In addition, when the aluminum alloy is produced by using a low-pressure casting forming method, the structure of a casting structure is greatly optimized, and the recovery rate of the aluminum alloy liquid can reach 90%. The disadvantages of the low-pressure casting method are long casting time, long mold changing time and high equipment cost. The low-pressure casting method has become the preferred process for manufacturing aluminum alloy, so far, the gravity casting method is basically not used for producing aluminum alloy, and the process for producing aluminum alloy by the low-pressure casting method is widely used.
The forging forming of the aluminum alloy is produced by changing from solid to solid, does not contain liquid phase change in the process, and is solid change. Compared with cast aluminum alloy, the aluminum alloy produced by forging has better mechanical property, high strength, good corrosion resistance and prepared size. Furthermore, in the process of forging aluminum alloy, the flowing direction of aluminum alloy crystal grains is the same as the direction of receiving external force, so that the strength and fatigue strength of the aluminum alloy produced by the forging forming method are superior to those of the aluminum alloy produced by the casting method. The elongation of the aluminum alloy produced by the forging method is about fourteen percent. In addition, the aluminum alloy produced by the forging forming method has no obvious pore defects on the surface, has inherent advantages when surface treatment is carried out in the future, and greatly enhances the plasticity of the aluminum alloy.
The manufacturing of aluminum alloy by using the forging forming process has disadvantages, and firstly, the process flow of the forging method is relatively complex, and the manufacturing cost of the aluminum alloy is relatively high. The aluminum alloy manufactured by the forging forming process has better comprehensive performance but higher cost.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a forging method of an aluminum alloy forging, so that the forging cost is reduced.
In order to achieve the purpose, the technical scheme of the invention is to design a forging method of an aluminum alloy forging, which comprises the following steps:
s1: blanking, cutting off the aluminum alloy cast ingot as a blank, wherein the size of the blank is larger than the blank making size of 5 single workpieces;
s2: heating before forging, namely placing the blank in a natural gas heating furnace, heating the blank to 280 ℃ along with the furnace, heating the blank to 450 +/-10 ℃ at a heating rate of less than or equal to 40 ℃/h and more than or equal to 30 ℃/h, keeping the temperature for more than or equal to 20h, and discharging the blank out of the furnace;
s3: forging, wherein the initial forging temperature is 450 ℃, the final forging temperature is 400 ℃, three-drawing and three-pier operation is adopted, the blank is forged into a sheet shape, and the thickness of the forged blank is 0.5-1cm larger than that of a workpiece;
s4: performing rapid die cutting, namely die cutting a plurality of unit blanks on the sheet blank by using a hydraulic die cutter, feeding the redundant leftover materials into a natural gas heating furnace, heating and preserving heat to continue to be used as a next batch of forged blanks;
s5: returning to the furnace for heating, namely putting a plurality of unit blanks into a heating furnace, heating to 450 +/-10 ℃ along with the furnace, and preserving heat for 2-3h;
s6: forming blanks, namely performing closed die forging on the unit blanks heated by remelting respectively, punching after the closed die forging, and then spinning;
s7: cooling, namely cooling the blank on a spinning machine to below 180 ℃, taking the blank out of the spinning machine, and cooling to room temperature;
s8: solution treatment;
s9: and (5) after machining, performing appearance inspection, marking and warehousing.
In a further improvement, the solution treatment specifically comprises: charging at room temperature, heating to 460-480 ℃, and preserving heat for 3-4h, wherein the water temperature for solid solution is 40-50 ℃, the water entry time is less than or equal to 10S, and the temperature of the aluminum alloy forging after solid solution is 40-50 ℃.
The invention has the advantages and beneficial effects that: the invention has the advantages that the die cutting is increased, the forming requirement during forging is simplified, a plurality of unit blanks can be die-cut in the same batch, the efficiency is greatly improved, redundant leftover materials can be timely recycled, and the waste of materials is reduced.
Detailed Description
The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The invention relates to a forging method of an aluminum alloy forging, which comprises the following steps:
s1: blanking, cutting off the aluminum alloy cast ingot as a blank, wherein the size of the blank is larger than the blank making size of 5 single workpieces;
s2: heating before forging, namely placing the blank in a natural gas heating furnace, heating the blank to 280 ℃ along with the furnace, heating the blank to 450 +/-10 ℃ at a heating rate of less than or equal to 40 ℃/h and more than or equal to 30 ℃/h, keeping the temperature for more than or equal to 20h, and discharging the blank out of the furnace;
s3: forging, wherein the initial forging temperature is 450 ℃, the final forging temperature is 400 ℃, three-drawing and three-pier operation is adopted, the blank is forged into a sheet shape, and the thickness of the forged blank is 0.5-1cm larger than that of a workpiece;
s4: performing rapid die cutting, namely die cutting a plurality of unit blanks on the sheet blank by using a hydraulic die cutter, feeding the redundant leftover materials into a natural gas heating furnace, heating and preserving heat to continue to be used as a next batch of forged blanks;
s5: returning to the furnace for heating, namely putting a plurality of unit blanks into a heating furnace, heating to 450 +/-10 ℃ along with the furnace, and preserving heat for 2-3h;
s6: forming blanks, namely performing closed die forging on the unit blanks heated by remelting respectively, punching after the closed die forging, and then spinning;
s7: cooling, namely cooling the blank on a spinning machine to below 180 ℃, taking the blank out of the spinning machine, and cooling to room temperature;
s8: solution treatment;
s9: and (5) after machining, performing appearance inspection, marking and warehousing.
In a preferred embodiment of the present invention, the solution treatment specifically includes: charging at room temperature, heating to 460-480 ℃, and preserving heat for 3-4h, wherein the water temperature for solid solution is 40-50 ℃, the water entry time is less than or equal to 10S, and the temperature of the aluminum alloy forging after solid solution is 40-50 ℃.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. The forging method of the aluminum alloy forging is characterized by comprising the following steps of:
s1: blanking, cutting off the aluminum alloy cast ingot as a blank, wherein the size of the blank is larger than the blank making size of 5 single workpieces;
s2: heating before forging, namely placing the blank in a natural gas heating furnace, heating the blank to 280 ℃ along with the furnace, heating the blank to 450 +/-10 ℃ at a heating rate of less than or equal to 40 ℃/h and more than or equal to 30 ℃/h, keeping the temperature for more than or equal to 20h, and discharging the blank out of the furnace;
s3: forging, wherein the initial forging temperature is 450 ℃, the final forging temperature is 400 ℃, three-drawing and three-pier operation is adopted, the blank is forged into a sheet shape, and the thickness of the forged blank is 0.5-1cm larger than that of a workpiece;
s4: performing rapid die cutting, namely die cutting a plurality of unit blanks on the sheet blank by using a hydraulic die cutter, feeding the redundant leftover materials into a natural gas heating furnace, heating and preserving heat to continue to be used as a next batch of forged blanks;
s5: returning to the furnace for heating, namely putting a plurality of unit blanks into a heating furnace, heating to 450 +/-10 ℃ along with the furnace, and preserving heat for 2-3h;
s6: forming blanks, namely performing closed die forging on the unit blanks heated by remelting respectively, punching after the closed die forging, and then spinning;
s7: cooling, namely cooling the blank on a spinning machine to below 180 ℃, taking the blank out of the spinning machine, and cooling to room temperature;
s8: solution treatment;
s9: and (5) after machining, performing appearance inspection, marking and warehousing.
2. The forging method of the aluminum alloy forging as recited in claim 1, wherein the solution treatment specifically comprises the following steps: charging at room temperature, heating to 460-480 ℃, and preserving heat for 3-4h, wherein the water temperature for solid solution is 40-50 ℃, the water entry time is less than or equal to 10S, and the temperature of the aluminum alloy forging after solid solution is 40-50 ℃.
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| CN201911076626.XA CN110814245B (en) | 2019-11-06 | 2019-11-06 | Forging method of aluminum alloy forging |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911076626.XA CN110814245B (en) | 2019-11-06 | 2019-11-06 | Forging method of aluminum alloy forging |
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| CN110814245A CN110814245A (en) | 2020-02-21 |
| CN110814245B true CN110814245B (en) | 2021-05-14 |
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| CN112846058A (en) * | 2020-12-24 | 2021-05-28 | 惠州市朝凰铸件有限公司 | Novel forging process based on high-strength and high-toughness aluminum alloy sliding plate support |
| CN115283593A (en) * | 2022-08-18 | 2022-11-04 | 重庆新钰立金属科技有限公司 | Forming method of aluminum forging of generator oil tank frame |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08112640A (en) * | 1994-10-13 | 1996-05-07 | Washi Kosan Kk | Manufacture of one-piece rim for light alloy-made wheel |
| CN101092015A (en) * | 2007-08-09 | 2007-12-26 | 航天材料及工艺研究所 | Method for manufacturing large size, thin walled cap seal head made from TC4 titanium alloy with high precision |
| CN101912944A (en) * | 2010-08-03 | 2010-12-15 | 燕山大学 | Method for machining aluminum alloy hub |
| CN104907474A (en) * | 2014-11-03 | 2015-09-16 | 秦皇岛燕大现代集成制造技术开发有限公司 | Aluminum alloy wheel forging forming technology |
| CN106363352A (en) * | 2016-08-31 | 2017-02-01 | 无锡派克新材料科技股份有限公司 | Manufacturing process of high-strength aluminum alloy ring forge |
| CN107312987A (en) * | 2017-07-12 | 2017-11-03 | 安徽凯密克企业管理咨询有限公司 | A kind of forging method of aluminium alloy wheel hub |
-
2019
- 2019-11-06 CN CN201911076626.XA patent/CN110814245B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08112640A (en) * | 1994-10-13 | 1996-05-07 | Washi Kosan Kk | Manufacture of one-piece rim for light alloy-made wheel |
| CN101092015A (en) * | 2007-08-09 | 2007-12-26 | 航天材料及工艺研究所 | Method for manufacturing large size, thin walled cap seal head made from TC4 titanium alloy with high precision |
| CN101912944A (en) * | 2010-08-03 | 2010-12-15 | 燕山大学 | Method for machining aluminum alloy hub |
| CN104907474A (en) * | 2014-11-03 | 2015-09-16 | 秦皇岛燕大现代集成制造技术开发有限公司 | Aluminum alloy wheel forging forming technology |
| CN106363352A (en) * | 2016-08-31 | 2017-02-01 | 无锡派克新材料科技股份有限公司 | Manufacturing process of high-strength aluminum alloy ring forge |
| CN107312987A (en) * | 2017-07-12 | 2017-11-03 | 安徽凯密克企业管理咨询有限公司 | A kind of forging method of aluminium alloy wheel hub |
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