CN103451580A - Solution treatment method of aluminum-alloy tubular workpiece - Google Patents
Solution treatment method of aluminum-alloy tubular workpiece Download PDFInfo
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- CN103451580A CN103451580A CN2013104143866A CN201310414386A CN103451580A CN 103451580 A CN103451580 A CN 103451580A CN 2013104143866 A CN2013104143866 A CN 2013104143866A CN 201310414386 A CN201310414386 A CN 201310414386A CN 103451580 A CN103451580 A CN 103451580A
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Abstract
The invention relates to a solution treatment method of an aluminum-alloy tubular workpiece, which is suitable for local softening treatment before the aluminum-alloy thin-walled tubular workpiece is subjected to assembly flaring or other local plastic deformation machining. The solution treatment method has the technical characteristics that a part of the workpiece, which needs to be softened, is immersed in a heating device so as to be heated, then the overall cooling or the local cooling that a cooling part is larger than a heating part is carried out in water serving as a cooling medium, after being cooled thoroughly, the workpiece is cleaned, the assembly flaring, flanging or other local plastic deformation machining is carried out on the part subjected to solution treatment, and the local softening part of the material of the workpiece is reinforced through natural ageing or artificial ageing. The solution treatment method has the characteristics of being capable of effectively ensuring that the part of the aluminum-alloy thin-walled tubular workpiece, which needs to be subjected to assembly flaring or other local plastic deformation machining, is subjected to solution treatment and softening, so that the part is conveniently subjected to the plastic deformation machining, and meanwhile ensuring that a main body of the thin-walled workpiece is free of heat treatment deformation, so that the thin-walled workpiece does not crack in the plastic deformation or assembly flaring process, and the like.
Description
Technical field
The present invention relates to tubular solid solution treatment method of a kind of aluminium alloy, belong to the heat treatment technics field, it is applicable to thin-wall tubular piece of aluminium alloy softening processing in the part (in short-term) of being assembled enlarging or other local plastic deformation first being processed.
Background technology
In background technology, the solution treatment of aluminium alloy normally integral body is carried out, though this method can make the material of whole workpiece be softened in the short period of time after just carrying out solution treatment, obtain again mechanical property preferably after timeliness, but due to workpiece in the heat-processed of solution treatment, particularly when its chilling, generally all can produce distortion, often adopt the solution treatment post-equalization or left the method that process redundancy carries out machining after solution treatment timeliness again and solve before solution treatment.But carry out machining and the inconvenient thin-wall part of being proofreaied and correct for inconvenience after solution treatment, have a defect such as an insoluble distortion difficult problem, for overcoming these defects, tubular solid solution treatment method of aluminium alloy is studied.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of aluminium alloy tubular solid solution treatment method, it is softening that it can make the part of aluminium alloy thin-walled carry out solution treatment effectively, make it easy to viscous deformation processing, can make again the thin-wall part main body that heat treatment deformation does not occur, it is not ftractureed in viscous deformation or assembling, and then strengthened through timeliness.
The technical solution adopted for the present invention to solve the technical problems is, it comprises the greasy dirt on cleaning workpiece, removes moisture content, carries out drying,
After removing moisture content and carrying out drying, by needing the softening or softening position of temporary needs to be immersed in heating unit on workpiece, heat, be 8～10 minutes heat-up time, it is 495～500 ℃ that Heating temperature and its material monolithic solid solubility temperature are all controlled, soaking time is identical with the time of its material monolithic solution treatment or extend 3～15 minutes
In temperature, be in 5～30 ℃, the heat-eliminating medium medium that is water, the workpiece that length is less than to cooling tank carries out that integral body is cooling, and be 2 minutes cooling time, and the workpiece that length is greater than to cooling tank carries out the Local cooling that cooling position is greater than the heating position,
After workpiece is cold, adopt the mobile tap water that temperature is 15～35 ℃ to be cleaned workpiece,
After workpiece cleaning is clean, within solution treatment incubation period of workpiece material, enlarging, flange or the processing of other local plastic deformation are assembled in the position of solution treatment,
After viscous deformation processing or assembling, workpiece is placed 90～100 hours at normal temperatures, and the position of the local solution treatment of workpiece obtains the natural aging strengthening,
Described process furnace is nitrate furnace or aluminium alloy induction heating equipment,
Described soaking time is than the holding time of its material monolithic solution treatment, according to thickness of workpiece, can be 5 minutes, 9 minutes, 13 minutes.
The beneficial effect that the present invention compared with the existing technology produced
1, owing to aluminium alloy thin-walled, adopting local solution treatment, the heat treating method of whole cooling (or cooling zone is greater than heating zone), therefore it is softening that it can make the position of the need assemblings enlarging of aluminium alloy thin-walled or the processing of other local plastic deformation carry out solution treatment effectively, make it easy to viscous deformation processing, can make again the thin-wall part main body that heat treatment deformation does not occur, it is not ftractureed in viscous deformation or assembling enlarging.
The accompanying drawing explanation
The process flow sheet that Fig. 1 is tubular solid solution treatment method of aluminium alloy of the present invention.
Embodiment
Referring to accompanying drawing 1, the workpiece of 2A12 duralumin material (1 millimeter of wall thickness) is when carrying out solution treatment, and the greasy dirt on cleaning workpiece at first, and remove moisture content, carry out drying.
After drying, by needing the softening or softening position of temporary needs to be immersed in the nitrate furnace that temperature is 495～500 ℃ on workpiece, heat 8～10 minutes.
After the softening heating of workpiece, in the mobile tap water that is 5～30 ℃ in temperature cooling 2 minutes.
After workpiece is cold, in the mobile tap water that is 15～35 ℃ in temperature, clean, workpiece is assembled to enlarging after drying moisture content.
Workpiece normal temperature is placed 90～100 hours, and the position of the local solution treatment of workpiece obtains the natural aging strengthening.
Claims (9)
1. tubular solid solution treatment method of an aluminium alloy, it comprises the greasy dirt on cleaning workpiece, and removes moisture content, carries out drying, it is characterized in that:
After removing moisture content and carrying out drying, by needing the softening or softening position of temporary needs to be immersed in heating unit on workpiece, heat, Heating temperature is identical with its material monolithic solid solubility temperature, and soaking time is identical with the time of its material monolithic solution treatment or extend 3～15 minutes;
In the medium that is water at heat-eliminating medium again, it is cooling that the workpiece that length is less than to cooling tank carries out integral body, and the workpiece that length is greater than to cooling tank carries out the Local cooling that cooling position is greater than the heating position;
After cold, adopt mobile tap water or warm water to be cleaned workpiece;
After it cleans up, within solution treatment incubation period of workpiece material, enlarging, flange or the processing of other local plastic deformation are assembled in the position of solution treatment;
After viscous deformation processing or assembling, strengthened by natural aging or artificial aging in the local softening position of its material.
2. want tubular solid solution treatment method of profit 1 described aluminium alloy according to right, it is characterized in that described heating unit is nitrate furnace.
3. want tubular solid solution treatment method of profit 1 described aluminium alloy according to right, it is characterized in that described heating unit is the aluminium alloy induction heating equipment.
4. want tubular solid solution treatment method of profit 1 described aluminium alloy according to right, it is characterized in that described soaking time was than the holding time of its material monolithic solution treatment 5 minutes.
5. want tubular solid solution treatment method of profit 1 described aluminium alloy according to right, it is characterized in that described soaking time was than the holding time of its material monolithic solution treatment 9 minutes.
6. want tubular solid solution treatment method of profit 1 described aluminium alloy according to right, it is characterized in that described soaking time was than the holding time of its material monolithic solution treatment 13 minutes.
7. want tubular solid solution treatment method of profit 1 described aluminium alloy according to right, it is characterized in that described
The Heating temperature of heating unit be 495～500 ℃, be 8～10 minutes heat-up time.
8. want tubular solid solution treatment method of profit 1 described aluminium alloy according to right, while it is characterized in that adopting the flowing water medium cooling, the temperature of water is 5～30 ℃, and be 2 minutes cooling time.
9. want tubular solid solution treatment method of profit 1 described aluminium alloy according to right, it is characterized in that placing at normal temperatures 90～100 hours after the processing of workpiece local plastic deformation, make the position of the local solution treatment of workpiece obtain the natural aging strengthening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013104143866A CN103451580A (en) | 2013-09-12 | 2013-09-12 | Solution treatment method of aluminum-alloy tubular workpiece |
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| CN2013104143866A CN103451580A (en) | 2013-09-12 | 2013-09-12 | Solution treatment method of aluminum-alloy tubular workpiece |
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| CN103451580A true CN103451580A (en) | 2013-12-18 |
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| CN2013104143866A Pending CN103451580A (en) | 2013-09-12 | 2013-09-12 | Solution treatment method of aluminum-alloy tubular workpiece |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104498847A (en) * | 2014-12-03 | 2015-04-08 | 北京航星机器制造有限公司 | Method for controlling deformation of thin-walled aluminum alloy bracket with cavity structure during heat treatment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5329220A (en) * | 1976-08-31 | 1978-03-18 | Sumitomo Metal Ind Ltd | Production of rough tube made of super high tensile steel having very excellent ductility and toughness |
| CN1470339A (en) * | 2002-07-23 | 2004-01-28 | 江南机器厂 | Local solution treating method for thin-wall tubular piece of aluminium alloy |
| CN101082115A (en) * | 2007-05-25 | 2007-12-05 | 中南大学 | Treatment method for providing aluminum alloy with high thermal stability anti-fatigue microstructure |
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2013
- 2013-09-12 CN CN2013104143866A patent/CN103451580A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5329220A (en) * | 1976-08-31 | 1978-03-18 | Sumitomo Metal Ind Ltd | Production of rough tube made of super high tensile steel having very excellent ductility and toughness |
| CN1470339A (en) * | 2002-07-23 | 2004-01-28 | 江南机器厂 | Local solution treating method for thin-wall tubular piece of aluminium alloy |
| CN101082115A (en) * | 2007-05-25 | 2007-12-05 | 中南大学 | Treatment method for providing aluminum alloy with high thermal stability anti-fatigue microstructure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104498847A (en) * | 2014-12-03 | 2015-04-08 | 北京航星机器制造有限公司 | Method for controlling deformation of thin-walled aluminum alloy bracket with cavity structure during heat treatment |
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Application publication date: 20131218 |