CN1177657C - Method of mfg. aluminium vessel having side lustre - Google Patents
Method of mfg. aluminium vessel having side lustre Download PDFInfo
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- CN1177657C CN1177657C CNB011121076A CN01112107A CN1177657C CN 1177657 C CN1177657 C CN 1177657C CN B011121076 A CNB011121076 A CN B011121076A CN 01112107 A CN01112107 A CN 01112107A CN 1177657 C CN1177657 C CN 1177657C
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- aluminium
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Abstract
The invention provides a manufacturing method to finish an outer side face of an aluminum container to a glossy face with press-drawing only without increasing a working cost so as to solve the problem that the outer side face of the aluminum container is not finished to a glossy face in a conventional press drawing method and a process to grind a container outer face is required to finish a glossy face resulting in increasing a working cost. A clearance between a die and a core is set to not less than 40% to not more than 80% for a thickness of an aluminum plate before press working, press drawing is conducted under the condition that a plate thickness decreasing rate of before/ after press working is not less than 18% to not more than 60%.
Description
Technical field
The present invention relates to a kind of manufacture method of aluminium vessels such as interior pot of electric cooker, this manufacture method is made the glossiness aluminium vessel in side by punch process.
Background technology
When the aluminium vessels such as interior pot of deep-draw processing electric cooker, because carry out deep-draw processing by a punching press usually, so the thickness of slab slip less than 15% of aluminium vessel side, the outer surface of container is also matt fully at present.
If make aluminium vessel side thickness of slab slip reach processing more than 15%, material is then filled in the gap of metal die, has the problem that does not enter in the metal die with regard to fracture.
In addition, though open to have put down in writing in flat 5-84524 number the spy and make aluminium vessel side thickness of slab slip reach the content below 50% more than 40%, but this invention relates to beer container etc., be the sheet material thin to 0.3mm, carry out punch process under the state bigger of gap between outer mold (former) and inner mold (core) making, can not obtain glossiness outer surface in this way than thickness of slab.
In addition,, except common deep-draw processing, also have rotary pressing processing,, can not obtain glossiness outer surface though the thickness of slab slip can reach more than 15% in this processing method as the deep-draw processing method.
Therefore, as existing Surface Finishing, adopt by the polishing container outer surface to obtain the method for gloss or utilize outside application or tinted hard plating aluminium oxide film method, no matter but all there is the high problem of cost in which kind of processing.
Summary of the invention
In existing punching press deep-draw processing method, can not be processed into glossiness surface to the outer surface of aluminium vessel, when adopting the method for grinding container outside in order to be processed into glossy surface, there is the high problem of processing cost.
The invention provides the manufacture method of the glossiness aluminium vessel in a kind of side, it makes gap between outer metal die and interior metal die is more than 40% below 80% of aluminium plate thickness before the punch process, this aluminium sheet is carried out deep-draw processing, so that making thickness of slab slip before and after the punch process is more than 18% below 60%, the number of times of deep-draw processing is more than twice, below four times.
In addition, preferably, adopting work hardening index is more than 0.22, and percentage elongation is more than 20%, and hot strength is 80N/mm
2The aluminium sheet of above aluminium sheet before as punch process.More preferably, using work hardening index is more than 0.23, and percentage elongation is more than 27%, and hot strength is 100N/mm
2Above aluminium sheet.
About the number of times of punching press deep-draw processing, preferably more than twice, below four times.From deep drawability, the processing increased frequency, then the work hardening degree of aluminium sheet increases, and makes the processability variation thus, and fracture or damaged takes place easily.Therefore, the processing number of times is preferably in four times.In addition, do not comprise shaping procedure of processing (sizing) in the said herein processing number of times.
According to the present invention, need not increase processing cost and just can be manufactured on the aluminium vessel that has gloss on the lateral surface.
Description of drawings
Fig. 1 shows the situation of implementing deep-draw processing.
The specific embodiment
In Fig. 1, the 1st, internal diameter is the outer metal die of D, the 2nd, thickness is the aluminium sheet of t, the 3rd, external diameter is the interior metal die of d.
At this moment, the gap between outer metal die and interior metal die is (D-d) ÷ 2.
Specify the present invention below.
In order to make the aluminium vessel outer surface glossy, and must be, preferably be controlled at more than 50% below 75% the clearance control of the outer mold of stamped metal mould and inner mold at more than 40% below 80% of aluminium plate thickness by deep-draw processing.Its reason is in order to add man-hour in deep-draw by apply the power of catching up with shape processing on one side on surface of aluminum plate, Yi Bian make the thickness attenuation of aluminium sheet, to make surface smoothingization, becoming glossy.
For the aluminium plate thickness before the punch process, the thickness slip of the aluminium sheet of deep-draw processing should be more than 18% below 60%, but the thickness of slab slip that preferably makes aluminium sheet is more than 30% below 55%.About the processing number of times, can determine according to processability, preferably elect as twice or three times.
As for the aluminium that uses, consider punch process, preferably select for use work hardening index more than 0.22, percentage elongation is more than 20%, and hot strength is at 80N/mm
2Above aluminium sheet selects for use work hardening index more than 0.23, and percentage elongation is below 27%, and hot strength is at 100N/mm
2Above aluminium sheet is better.
The JIS 3003 that can enumerate aluminium alloy is as most preferred embodiment.
Specify the present invention below by embodiment.
[embodiment A]
With thickness 2.0,3.0,5.0,6.0, the aluminium sheet of the modified O section bar that the JIS 3003 and 3004 of diameter phi 390 is is put into NH as blank with these sheet materials
4In the Cl aqueous solution with 20 coulombs/cm
2Electric weight carry out electrolytic etching, it is fine concavo-convex that its surface go up to be generated, fluorine resin coating dispersion liquid on this surface obtains the aluminium sheet that applies behind sintering.
Be that each metal die of 0.6～5.0mm carries out deep-draw processing to the plate of the aluminium sheet of these coatings and uncoated and obtains container with the gap, implement three times processing and forming, be processed into following shape respectively.
Internal diameter 215mm container depth 134mm for the first time
Internal diameter 215mm container depth 142mm for the second time
Internal diameter 215mm container depth 155mm for the third time
The gloss of these containers has useless visual by following standard determination.
Zero mirrors the profile of goods, and the surface is glossy.
△ can partly see upward lusterless part of surface.
The soft edge of * goods, mattness.
Perhaps, breakage etc. can not process because of taking place.
The thickness slip of aluminium sheet is measured the mensuration sample that downcuts from container side with micrometer, calculates according to following formula.
Thickness slip (%)={ (aluminium sheet original thickness)-(thickness of container gloss part (or relative section)) }/(aluminium sheet original thickness) * 100%.
Outcome record is in table 1 and table 2.
[table 1]
The punch forming processability of table 1 aluminium 3003
| Aluminium sheet thickness of slab (mm) | Metal die gap (mm) | The punch forming processing result | |||
| Tarnish is arranged | The thickness of slab of side (mm) | Thickness of slab slip (%) | |||
| Comparative example 1 | 2 | 2.0 | × | 1.95 | 2.5 |
| Embodiment 1 | 2 | 1.6 | △ | 1.57 | 21.5 |
| Embodiment 2 | 2 | 1.2 | ○ | 1.18 | 41.0 |
| Embodiment 3 | 2 | 0.8 | △ | 0.81 | 59.5 |
| Comparative example 2 | 2 | 0.6 | × | - | - |
| Comparative example 3 | 3 | 2.9 | × | 2.88 | 4.0 |
| Embodiment 4 | 3 | 2.4 | △ | 2.37 | 21.0 |
| Embodiment 5 | 3 | 1.8 | ○ | 1.73 | 42.3 |
| Embodiment 6 | 3 | 1.2 | △ | 1.25 | 58.3 |
| Comparative example 4 | 3 | 0.6 | × | - | - |
| Comparative example 5 | 5 | 4.5 | × | 4.42 | 11.6 |
| Embodiment 7 | 5 | 4.0 | △ | 3.80 | 24.0 |
| Embodiment 8 | 5 | 2.4 | ○ | 2.30 | 54.0 |
| Embodiment 9 | 5 | 2.0 | △ | 2.00 | 60.0 |
| Comparative example 6 | 5 | 1.8 | × | - | - |
| Comparative example 7 | 6 | 5.0 | × | 4.98 | 17.0 |
| Embodiment 10 | 6 | 4.5 | △ | 4.53 | 24.5 |
| Embodiment 11 | 6 | 2.9 | ○ | 2.81 | 53.2 |
| Embodiment 12 | 6 | 2.4 | △ | 2.41 | 59.8 |
| Comparative example 8 | 6 | 2.0 | × | - | - |
[table 2]
The punch forming processability of table 2 aluminium 3004
| Aluminium sheet thickness of slab (mm) | Metal die gap (mm) | The punch forming processing result | |||
| Tarnish is arranged | The thickness of slab of side (mm) | Thickness of slab slip (%) | |||
| Comparative example 9 | 2 | 2.0 | × | 1.97 | 1.5 |
| Embodiment 13 | 2 | 1.6 | △ | 1.57 | 21.5 |
| Embodiment 14 | 2 | 1.2 | ○ | 1.20 | 40.0 |
| Embodiment 15 | 2 | 0.8 | △ | 0.82 | 59.0 |
| Comparative example 10 | 2 | 0.6 | × | - | - |
| Comparative example 11 | 3 | 2.9 | × | 2.92 | 2.7 |
| Embodiment 16 | 3 | 2.4 | △ | 2.39 | 20.3 |
| Embodiment 17 | 3 | 1.8 | ○ | 1.78 | 40.7 |
| Embodiment 18 | 3 | 1.2 | △ | 1.22 | 59.3 |
| Comparative example 12 | 3 | 0.6 | × | - | - |
| Comparative example 13 | 5 | 4.5 | × | 4.48 | 10.4 |
| Embodiment 19 | 5 | 4.0 | △ | 4.10 | 18.0 |
| Embodiment 20 | 5 | 2.4 | ○ | 2.37 | 52.6 |
| Embodiment 21 | 5 | 2.0 | △ | 2.10 | 58.0 |
| Comparative example 14 | 5 | 1.8 | × | - | - |
| Comparative example 15 | 6 | 5.0 | × | 5.01 | 16.5 |
| Embodiment 22 | 6 | 4.5 | △ | 4.53 | 24.5 |
| Embodiment 23 | 6 | 2.9 | ○ | 2.91 | 51.5 |
| Embodiment 24 | 6 | 2.4 | △ | 2.41 | 59.8 |
| Comparative example 16 | 6 | 2.0 | × | - | - |
[Embodiment B]
With thickness 4.0,5.0mm, it is a kind of that the JIS 1000 of diameter phi 390 is, 3,000 two kinds of being, the 5000 a kind of aluminium sheets that are are as blank, and modified all is the O section bar, and these plates are put into NH
4In the Cl aqueous solution with 20 coulombs/cm
2Electric weight carry out electrolytic etching, it is fine concavo-convex that it is generated from the teeth outwards, fluorine resin coating dispersion liquid on this surface obtains the aluminium sheet of coating through sintering.Utilize the metal die deep-draw processing of gap 2.9mm to obtain pot the aluminium sheet of these coatings and the plate of uncoated.Shaping adds work point to be carried out for three times, is processed into following shape respectively.
Internal diameter 215mm container depth 134mm for the first time
Internal diameter 215mm container depth 142mm for the second time
Internal diameter 215mm container depth 155mm for the third time
The mensuration of the thickness slip of and aluminium sheet matt about having of these containers is identical with embodiment A.The work hardening index of aluminium sheet is measured according to JISZ 2253.The percentage elongation of aluminium sheet and hot strength are measured according to JISZ 2201 and JISZ 2241.The result is shown in the table 3.
[table 3]
The thickness of slab slip of the aluminium material that table 3 is different and pot relation of outer surface gloss
| Aluminium sheet | The punching press result | Processability | ||||||
| Material | Work hardening index | Percentage elongation % | Hot strength N/mm 2 | Thickness of slab mm | Tarnish is arranged | Thickness of slab slip % | ||
| Embodiment 25 | 1100 | 0.26 | 35 | 89 | 4 | △ | 25 | △ |
| Embodiment 26 | 1100 | 0.26 | 35 | 89 | 5 | ○ | 40 | △ |
| Embodiment 27 | 3003 | 0.24 | 30 | 111 | 4 | △ | 26 | ◎ |
| Embodiment 28 | 3003 | 0.24 | 30 | 111 | 5 | ○ | 40 | ◎ |
| Embodiment 29 | 3004 | 0.22 | 20 | 179 | 4 | △ | 24 | ○ |
| Embodiment 30 | 3004 | 0.22 | 20 | 179 | 5 | ○ | 39 | ○ |
| Embodiment 31 | 5052 | 0.28 | 25 | 193 | 4 | △ | 24 | ○ |
| Embodiment 32 | 5052 | 0.28 | 25 | 193 | 5 | ○ | 41 | ○ |
No matter have or not coating, coming to the same thing of gained can be made the container that lateral surface has gloss with various aluminiums.The mark connotation of " processability " in the table 3 is as follows.
Breakage etc. does not take place in ◎ in drawing processing, the defective that the pot outer surface causes because of drawing processing does not almost take place to need to proofread and correct.
Though zero generation needs the defective of correction, do not occur in the damaged incompleteness that waits in the punch forming processing.
The defective of correction need to have taken place in △, and the damaged incompleteness that waits also once took place in punch forming.
Claims (3)
1. the manufacture method of the glossiness aluminium vessel in side, it is characterized in that: making gap between outer metal die and interior metal die is more than 40% below 80% of aluminium plate thickness before the punch process, this aluminium sheet is carried out deep-draw processing, so that making thickness of slab slip before and after the punch process is more than 18% below 60%, the number of times of deep-draw processing is more than twice, below four times.
2. the manufacture method of the glossiness aluminium vessel in side as claimed in claim 1 is characterized in that: the work hardening index of the aluminium sheet before the punch process is more than 0.22, and percentage elongation is more than 20%, and hot strength is 80N/mm
2More than.
3. the manufacture method of the glossiness aluminium vessel in side as claimed in claim 1 is characterized in that: the work hardening index of the aluminium sheet before the punch process is more than 0.23, and percentage elongation is more than 27%, and hot strength is 100N/mm
2More than.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP105819/2000 | 2000-04-07 | ||
| JP2000105819A JP2001286941A (en) | 2000-04-07 | 2000-04-07 | Manufacturing method of aluminum container with glossy side face |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1317379A CN1317379A (en) | 2001-10-17 |
| CN1177657C true CN1177657C (en) | 2004-12-01 |
Family
ID=18619085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011121076A Expired - Fee Related CN1177657C (en) | 2000-04-07 | 2001-03-28 | Method of mfg. aluminium vessel having side lustre |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2001286941A (en) |
| CN (1) | CN1177657C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5952804B2 (en) * | 2010-04-13 | 2016-07-13 | クラウン パッケイジング テクノロジー インコーポレイテッド | Can manufacturing |
| JP6046366B2 (en) * | 2012-04-05 | 2016-12-14 | トヨタ自動車株式会社 | Incremental forming method of metal plate |
| FR3013244B1 (en) * | 2013-11-19 | 2015-11-20 | Constellium France | PROCESS FOR MANUFACTURING BRILLIANT METAL MOLDING CAPSULES |
| CN105834271B (en) * | 2016-03-31 | 2018-04-10 | 苏州三维精密机械有限公司 | The technique that the constant bull nose of deep drawn bottom of a cup filleted corner reduces |
| CN108819597A (en) * | 2018-07-09 | 2018-11-16 | 陈珍烊 | A kind of decoration does old technology with metal decoration |
-
2000
- 2000-04-07 JP JP2000105819A patent/JP2001286941A/en active Pending
-
2001
- 2001-03-28 CN CNB011121076A patent/CN1177657C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1317379A (en) | 2001-10-17 |
| JP2001286941A (en) | 2001-10-16 |
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Granted publication date: 20041201 Termination date: 20100328 |