CN104722634A - Manufacturing process of stainless steel container without weld joint - Google Patents
Manufacturing process of stainless steel container without weld joint Download PDFInfo
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- CN104722634A CN104722634A CN201510129077.3A CN201510129077A CN104722634A CN 104722634 A CN104722634 A CN 104722634A CN 201510129077 A CN201510129077 A CN 201510129077A CN 104722634 A CN104722634 A CN 104722634A
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- stainless steel
- cylinder base
- steel cylinder
- bulging
- plate material
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Abstract
The invention discloses a manufacturing process of a stainless steel container without a weld joint. The stainless steel container without the weld joint is manufactured through a liquid-filling deep-drawing process, a flexibility-variable blank holder force deep-drawing process, an axial loading core-free die rotary compression necking-down process and a compound loading shape expansion process, a weld joint on the container is effectively eliminated, a processing link is omitted, material consumption is reduced, the requirement for environmental protection is met while product quality is guaranteed, and the rejection rate of products is greatly lowered.
Description
Technical field
the present invention relates to a kind of preparation technology of no-welding-seam rustless steel container.
Background technology
there is many big and small liquid beverage containers in daily life.Along with the raising of people's quality of life, also more and more higher to the requirement of beverage container, the characteristics such as existing rustless steel container has durable in use, Antimicrobial sanitation, is easy to temperature control, is easy to carry, not easily fragmentation, safety non-toxic, economical and practical, environmental protection, make consumers in general more and more favor use rustless steel container.Rustless steel container in the market, mostly adopt traditional handicraft to produce, its product is with obvious weld seam.In actual applications, because the problem of material and welding process, easily cause weld dimensions to produce intercrystalline corrosion or fire check, thus reduce container and bear the pressure of internal liquid and the ability of impact resistant extruding; More seriously, the polishing of postwelding cannot eliminate weld seam, not only cause the percent defective up to 5%, and the crystal boundary producing chromium carbide in commissure separates out phenomenon, decrease the chromium content near crystal boundary, thus reduce decay resistance, after soaking with bead contact such that acidity or akaline liquid drink are long-time, easy fermentation is gone bad.
Summary of the invention
the object of this invention is to provide a kind of preparation technology of no-welding-seam rustless steel container.
for achieving the above object, the technical solution used in the present invention is:
a preparation technology for no-welding-seam rustless steel container, described preparation technology comprises the following steps:
(1) get the raw materials ready: the stainless steel plate material needed for preparatory technology;
(2) overall deep-draw: prepare overall deep-drawing device, described overall deep-drawing device comprises punch, be located on the upper blank holder of perimembranous outside described punch, be located at liquid-filled chamber on the downside of described punch, be located on perimembranous outside described liquid-filled chamber for coordinating with described upper blank holder the lower blank holder compressing described stainless steel plate material;
liquid medium is full of described liquid-filled chamber, described stainless steel plate material is placed between described upper blank holder and described lower blank holder, flexible variable pressure-pad-force is applied to described upper blank holder, apply pressure to described punch, described stainless steel plate material is pressed in described liquid-filled chamber to form stainless steel cylinder base by described punch;
(3) without the reducing of core spinning: prepare spinning reducing device, described spinning reducing device comprises the chuck, the spinning rod for spinning reducing that are fixedly connected with described stainless steel cylinder base;
the described stainless steel cylinder base obtained in step (2) is fixed on described chuck, described spinning rod is exerted pressure by the oral area curve of mould pressing power to described stainless steel cylinder base, apply axial tension to described stainless steel cylinder base, described spinning rod is by the described oral area spinning necking forming of described stainless steel cylinder base simultaneously;
(4) to pressurize bulging: prepare bulging device, described bulging device comprises bulging mould, for being filled with described liquid medium in described stainless steel cylinder base, executing stressed plunger, booster for pressurizeing for described liquid medium for the direction of axis line along described stainless steel cylinder base to it;
open described bulging mould, the described stainless steel cylinder base obtained in step (3) is put into described bulging mould, close described bulging mould, in described stainless steel cylinder base, described liquid medium is filled with by described oral area, by described booster, pressurization is carried out to described liquid medium and make described stainless steel cylinder base bulging, described plunger is filled in described bulging mould the bottom supported to described stainless steel cylinder base simultaneously, drive described plunger to apply axial compressive force with feed supplement to described stainless steel cylinder base again, described stainless steel cylinder base inflation is shaped.
preferably, in described step (2), before applying pressure to described punch, first start pressurization to the described liquid medium in described liquid-filled chamber, described liquid medium carries out anti-inflation to described stainless steel plate material.
preferably, in described step (2), described stainless steel plate material in overall deep-draw process, the flange Instability wrinkling gradually of described stainless steel plate material, described flexible variable pressure-pad-force increases with the increase of described flange Instability wrinkling trend, reduces with the reduction of described flange Instability wrinkling trend.
preferably, in described step (4), when described plunger applies axial compressive force to described stainless steel cylinder base, outside applies radial pressure to described stainless steel cylinder base simultaneously.
preferably, described preparation technology also comprises the bright annealing treating apparatus for eliminating flow harden phenomenon on described stainless steel cylinder base.
preferably, described bulging mould comprises bulging patrix, for coordinating the bulging counterdie of matched moulds with described bulging patrix.
due to the utilization of technique scheme, the present invention compared with prior art has following advantages: the preparation technology of a kind of no-welding-seam rustless steel container of the present invention, by introducing topping up deep-draw processes, flexible variable pressure-pad-force deep-draw processes, axially loading are processed obtain no-welding-seam rustless steel container without core spinning necking down process, Combined Loading bulging techniques, effectively eliminate the weld seam on product, decrease processing link, reduce the consumption of material, while guarantee product quality, reach environmental requirement, significantly reduce the percent defective of product.
Accompanying drawing explanation
accompanying drawing 1 is the structural representation of overall deep-drawing device in present invention process;
accompanying drawing 2 is the structural representation of bulging device in present invention process.
wherein: 1, stainless steel plate material; 2, punch; 3, upper blank holder; 4, liquid-filled chamber; 5, lower blank holder; 6, bulging patrix; 7, bulging counterdie; 8, plunger.
Detailed description of the invention
below in conjunction with accompanying drawing, technical scheme of the present invention is further elaborated.
shown in Fig. 1-2, the preparation technology of above-mentioned a kind of no-welding-seam rustless steel container, comprises the following steps:
(1) get the raw materials ready: the stainless steel plate material 1 needed for preparatory technology.
(2) overall deep-draw: prepare overall deep-drawing device, this overall deep-drawing device comprises punch 2, be located on the upper blank holder 3 of perimembranous outside this punch 2, be located at liquid-filled chamber 4 on the downside of punch 2, be located on perimembranous outside liquid-filled chamber 4 for coordinating with upper blank holder 3 the lower blank holder 5 compressing stainless steel plate material 1.
liquid medium is filled with liquid-filled chamber 4, is placed in by stainless steel plate material 1 between upper blank holder 3 and lower blank holder 5, applies flexible variable pressure-pad-force to upper blank holder 3, first start pressurization to the liquid medium in liquid-filled chamber 4, this liquid medium carries out anti-inflation to stainless steel plate material 1.Then apply pressure to punch 2, stainless steel plate material 1 is pressed in liquid-filled chamber 4 to form stainless steel cylinder base by punch 2.
when punch 2 is descending, liquid medium generation pressure in liquid-filled chamber 4 acts on stainless steel plate material 1 and makes it tightly be affixed to punch 2, make to produce frictional force between stainless steel plate material 1 and punch 2, set up " friction keeps effect " that topping up deep-draw is shaped, this frictional force is conducive to improving forming limit.
when pressure-pad-force is excessive, the tension of flange pressure can be made, be unfavorable for the flowing of material, encourage the danger of barrel drawing crack; When pressure-pad-force is too small, is not enough to the trend of resisting flange unstability, still can produces fold.For this problem, stainless steel plate material 1 is in overall deep-draw process, this flexible variable pressure-pad-force increases with the increase of flange Instability wrinkling trend, reduce with the reduction of flange Instability wrinkling trend, arranged by this, effectively raise the degree of stretcher strain, significantly improve the stretch forming limit, reduce terminal stretching coefficient, improve the once-forming rate of product.
(3) without the reducing of core spinning: prepare spinning reducing device, this spinning reducing device comprises the chuck, the spinning rod for spinning reducing that are fixedly connected with stainless steel cylinder base.
be fixed on chuck by the stainless steel cylinder base obtained in step (2), spinning rod is exerted pressure by the oral area curve of mould pressing power to stainless steel cylinder base, by the oral area spinning necking forming of stainless steel cylinder base.
in spinning reducing process, owing to being subject to the effect of circumferential compressive force and axial compression stress, axis and thickness direction produce and extends deformation, tangential generation compression, therefore when spinning reducing, outside applies axial tension to stainless steel cylinder base simultaneously, then the trend that oral area is subject to the effect of circumferential compressive force and axial compression stress to produce unstability will reduce, thus significantly improves a limit necking coefficient.Choosing of this axial tension, can not too greatly can not be too little, and too great Yi causes the drawing crack of barrel, too little, reduces wrinkling DeGrain.The size of this axial tension depends on change and work hardening two factors of wall thickness in process.
(4) to pressurize bulging: prepare bulging device, this bulging device comprises bulging mould, for being filled with liquid medium in stainless steel cylinder base, executing stressed plunger 8, booster for pressurizeing for liquid medium for the direction of axis line along stainless steel cylinder base to it.This bulging mould comprises bulging patrix 6, for coordinating the bulging counterdie 7 of matched moulds with bulging patrix 6.
the stainless steel cylinder base obtained in step (3) is put into bulging counterdie 7, cover bulging patrix 6, in stainless steel cylinder base, liquid medium is filled with by oral area, described booster carries out pressurization to liquid medium makes stainless steel cylinder base bulging, plunger 8 is filled in bulging mould until the bottom of conflict stainless steel cylinder base simultaneously, actuation plunger applies axial compressive force with feed supplement to stainless steel cylinder base again, and the inflation in bulging mould of stainless steel cylinder base is shaped.
when plunger applies axial compressive force to stainless steel cylinder base, outside applies radial pressure to stainless steel cylinder base simultaneously, and stainless steel cylinder base is pointed in the direction of this radial pressure.Due to the intervention of radial pressure, make maximum distortion place, stainless steel cylinder base breathing space stress state be improved significantly, make stainless steel cylinder base hydrostatic pressure or close to hydrostatic pressure state under produce distortion, for the plasticity playing material further provides strong deformation condition, effective repression of swelling district wall thickness is thinning, significantly improves forming limit and the forming quality of bulging.
repeatedly between deep-draw, in order to eliminate strain hardening, for the performance requirement of inner and outer wall and the difference of light conditions, this preparation technology also comprises bright annealing treating apparatus, by different bright annealing treatment process, guarantee the release that residual stress is effective and reasonable, break after avoiding shaping, reach the requirement of product appearance quality.
above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (6)
1. a preparation technology for no-welding-seam rustless steel container, is characterized in that: described preparation technology comprises the following steps:
(1) get the raw materials ready: the stainless steel plate material needed for preparatory technology;
(2) overall deep-draw: prepare overall deep-drawing device, described overall deep-drawing device comprises punch, be located on the upper blank holder of perimembranous outside described punch, be located at liquid-filled chamber on the downside of described punch, be located on perimembranous outside described liquid-filled chamber for coordinating with described upper blank holder the lower blank holder compressing described stainless steel plate material;
Liquid medium is full of described liquid-filled chamber, described stainless steel plate material is placed between described upper blank holder and described lower blank holder, flexible variable pressure-pad-force is applied to described upper blank holder, apply pressure to described punch, described stainless steel plate material is pressed in described liquid-filled chamber to form stainless steel cylinder base by described punch;
(3) without the reducing of core spinning: prepare spinning reducing device, described spinning reducing device comprises the chuck, the spinning rod for spinning reducing that are fixedly connected with described stainless steel cylinder base;
The described stainless steel cylinder base obtained in step (2) is fixed on described chuck, described spinning rod is exerted pressure by the oral area curve of mould pressing power to described stainless steel cylinder base, apply axial tension to described stainless steel cylinder base, described spinning rod is by the described oral area spinning necking forming of described stainless steel cylinder base simultaneously;
(4) to pressurize bulging: prepare bulging device, described bulging device comprises bulging mould, for being filled with described liquid medium in described stainless steel cylinder base, executing stressed plunger, booster for pressurizeing for described liquid medium for the direction of axis line along described stainless steel cylinder base to it;
Open described bulging mould, the described stainless steel cylinder base obtained in step (3) is put into described bulging mould, close described bulging mould, in described stainless steel cylinder base, described liquid medium is filled with by described oral area, by described booster, pressurization is carried out to described liquid medium and make described stainless steel cylinder base bulging, described plunger is filled in described bulging mould the bottom supported to described stainless steel cylinder base simultaneously, drive described plunger to apply axial compressive force with feed supplement to described stainless steel cylinder base again, described stainless steel cylinder base inflation is shaped.
2. the preparation technology of a kind of no-welding-seam rustless steel container according to claim 1, it is characterized in that: in described step (2), before pressure is applied to described punch, first start pressurization to the described liquid medium in described liquid-filled chamber, described liquid medium carries out anti-inflation to described stainless steel plate material.
3. the preparation technology of a kind of no-welding-seam rustless steel container according to claim 1, it is characterized in that: in described step (2), described stainless steel plate material is in overall deep-draw process, the flange Instability wrinkling gradually of described stainless steel plate material, described flexible variable pressure-pad-force increases with the increase of described flange Instability wrinkling trend, reduces with the reduction of described flange Instability wrinkling trend.
4. the preparation technology of a kind of no-welding-seam rustless steel container according to claim 1, is characterized in that: in described step (4), and when described plunger applies axial compressive force to described stainless steel cylinder base, outside applies radial pressure to described stainless steel cylinder base simultaneously.
5. the preparation technology of a kind of no-welding-seam rustless steel container according to claim 1, is characterized in that: described preparation technology also comprises the bright annealing treating apparatus for eliminating flow harden phenomenon on described stainless steel cylinder base.
6. the preparation technology of a kind of no-welding-seam rustless steel container according to claim 1, is characterized in that: described bulging mould comprises bulging patrix, for coordinating the bulging counterdie of matched moulds with described bulging patrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510129077.3A CN104722634B (en) | 2015-03-24 | 2015-03-24 | A kind of preparation technology of no-welding-seam rustless steel container |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510129077.3A CN104722634B (en) | 2015-03-24 | 2015-03-24 | A kind of preparation technology of no-welding-seam rustless steel container |
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| CN104722634A true CN104722634A (en) | 2015-06-24 |
| CN104722634B CN104722634B (en) | 2016-08-24 |
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| CN201510129077.3A Expired - Fee Related CN104722634B (en) | 2015-03-24 | 2015-03-24 | A kind of preparation technology of no-welding-seam rustless steel container |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234236A (en) * | 2015-09-17 | 2016-01-13 | 芜湖三花制冷配件有限公司 | Process for manufacturing container through spin forming of metal pipes |
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| CN105234236A (en) * | 2015-09-17 | 2016-01-13 | 芜湖三花制冷配件有限公司 | Process for manufacturing container through spin forming of metal pipes |
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| Publication number | Publication date |
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| CN104722634B (en) | 2016-08-24 |
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