CN105921639B - The manufacturing method of electromagnetic rice cooker liner and thus obtained liner - Google Patents
The manufacturing method of electromagnetic rice cooker liner and thus obtained liner Download PDFInfo
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- CN105921639B CN105921639B CN201610265024.9A CN201610265024A CN105921639B CN 105921639 B CN105921639 B CN 105921639B CN 201610265024 A CN201610265024 A CN 201610265024A CN 105921639 B CN105921639 B CN 105921639B
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- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 36
- 235000009566 rice Nutrition 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 240000007594 Oryza sativa Species 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 38
- 241000209094 Oryza Species 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 238000001125 extrusion Methods 0.000 claims abstract description 17
- 210000001161 Embryo, Mammalian Anatomy 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000000696 magnetic material Substances 0.000 claims description 8
- 230000035699 permeability Effects 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- -1 iron-aluminium-iron Chemical group 0.000 claims description 7
- 235000013339 cereals Nutrition 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 241000668709 Dipterocarpus costatus Species 0.000 claims description 5
- 238000007751 thermal spraying Methods 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 101710031899 moon Proteins 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 235000003140 Panax quinquefolius Nutrition 0.000 abstract description 5
- 240000005373 Panax quinquefolius Species 0.000 abstract description 5
- 235000013305 food Nutrition 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 230000003670 easy-to-clean Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 8
- 210000000614 Ribs Anatomy 0.000 description 7
- 238000004049 embossing Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 235000012054 meals Nutrition 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
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- 238000003672 processing method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
- B21D51/22—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like pots, e.g. for cooking
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
Abstract
The invention discloses a kind of manufacturing method of electromagnetic rice cooker liner and thus obtained liners.At present using the molding liner of post-tensioning is first embossed, liner inner surface is also made to form ridge design while increasing outer surface of liner heating surface area, it has not been convenient to which Sheng takes food, and is also inconvenient to clean.The manufacturing method of liner of the present invention is as follows：1）Chip select material selects iron plate, stainless iron plate or outermost layer to have the composite material sheet of magnetic property；2）Stretch, by sheet stock be put into mold carry out stretch form the thick embryo of liner, the height of the thick embryo of liner is lower 3 10mm than finished product liner height dimension；3）It squeezes, using extruder, the obtained thick embryo of liner will be stretched to be placed in extrusion die, it is squeezed, the extrusion die by pot-shaped formpiston and inner cavity formed in the former of pot-shaped, it processes that inner and outer surfaces ridge design pattern is inconsistent or the electromagnetic rice cooker liner of inner surface no concave-convex floral designs, Sheng is facilitated to take food, it is easy to clean.
Description
Technical field
The present invention relates to electromagnetic rice cooker field, the manufacturing method of specifically a kind of electromagnetic rice cooker liner and by
This liner obtained.
Background technology
Electromagnetic rice cooker（That is IH electric cookers）To be a kind of pot body is penetrated by the magnetic line of force（That is magnetic conductive metal liner）Added
The electric cooker of heat.The operation principle of IH electric cookers is as follows：By solenoid ON alternating current, directly metal inner tube is carried out
Heating, has crossed the heat conductive process of heating dish, and heating is rapid；And many high-end IH electric cookers introduce multi-pole coils, and it is real
The circular heating to entire liner is showed and has been evenly heated；IH electric cookers can also realize accurate program control to the stewing process processed of rice
System, needs to set different heat protocols, rice mouthfeel and nutritional ingredient, which are all promoted, to be arrived according to rice each heating period
Unprecedented height.The advantages of IH electric cookers：1. powerful firepower：It is rapidly heated, the grain of rice absorbs heat rapidly；2. outstanding heat transfer
Power：The grain of rice is helped fully to absorb water, each cooking stage is attained by optimal firepower；3. outstanding thermal convection current：Firepower is uniform,
Rice is comprehensively fully heated.Another key factor of cooked rice, which is the heating process grain of rice, fully to roll in water, in order to reach
It is to one effective way of this purpose：Increase liner permeability magnetic material outer surface part convex ribs, utilizes magnetic gap shadow when electromagnetic heating
The principle of calorific value is rung, the regular local convex ribs of outer surface of liner will generate the high fever in well-regulated part, and liner is made to boil
Rice water generates well-regulated bubble when meal, uniform water absorption, heat absorption to increase grain of rice rolling degree in water, and raising is cooked effect
Fruit.
Currently, for single permeability magnetic material（Such as iron）Liner, may be used cast shaping process, increase liner magnetic conduction material
Expect the local convex ribs of outer surface, but poor, of high cost using the manufacturing environment of cast shaping process, cast shaping process is also not suitable for
Liner is manufactured using multilayer materials.The forming technique of existing metal inner tube is mainly drawing and forming, as shown in Figure 1, using
For the liner of drawing and forming due to being limited by technique, molding product is essentially all the outer profile of flat smooth.In order to increase
Liner permeability magnetic material outer surface part convex ribs, generally use forcing press and mold with ridge design are first to metal plate（It is single
Layer or multilayer composite sheet）It is embossed processing, after processing, ridge design, while its are formed in the outer surface of metallic plate centre
Inner surface also forms corresponding ridge design（When outer surface is convex, to be recessed at corresponding inner surface）, i.e. inner and outer surfaces
Ridge design has the height or depth being close, as shown in Figure 2；Then drawing and forming processing is carried out again.It is first put down using above-mentioned
Face pressure is spent（That is local deformation）Post-tensioning is molded（I.e. whole deformation）Technique, it is high that outer surface of liner part convex ribs can be increased
Degree, but liner inner surface is also made to form pit simultaneously, it has not been convenient to Sheng takes food, and is also inconvenient to clean, also can in use
Influence the service life of liner inner surface non-sticking lining；This forming method can not process the recessed of inconsistent inner and outer surfaces
Convex decorative pattern or outer surface have ridge design and inner surface is smooth（The especially transition position light of inner surface bottom surface and side wall
Cunning is smooth）.
In addition, using above-mentioned processing technology, the outer surface ridge design obtained after plane is embossed, height or depth exist
Changed when drawing and forming, be typically to become smaller, so as to cause the height of outer surface of liner ridge design can not be accurately controlled
Or depth, for electromagnetic rice cooker, the height or depth of outer surface of liner ridge design directly affect its temperature control precision.
In addition, the height or depth of the ridge design processed using existing plane embossed technology are generally less than 0.5mm, such as embossing
When height or depth are more than 0.5mm, the difficulty of processing of drawing and forming below can be increased, that is, the height or depth of the ridge design processed
Degree is restricted.For the existing first plane embossing molding processing method of post-tensioning, can not processing request have enough height
The composite material liner of convex ribs, because composite material is combined by more metallic sheets, during suppressing convex ribs or drawing and forming
It can there is a phenomenon where adjacent materials to disengage.
Invention content
The technical problem to be solved by the present invention is to overcome the problems of the above-mentioned prior art, providing one kind can process
Inner and outer surfaces ridge design pattern is inconsistent or inner surface no concave-convex floral designs and accurately controls outer surface ridge design
The manufacturing method of the electromagnetic rice cooker liner of height or depth, can process the ridge design more than 0.5mm height or depth.
For this purpose, the present invention adopts the following technical scheme that：The manufacturing method of electromagnetic rice cooker liner, its step are as follows：1）
Chip select material selects iron plate, stainless iron plate or outermost layer to have the composite material sheet of magnetic property；2）It stretches, sheet stock is put into mould
Tool, which stretch, forms the thick embryo of liner, and the height of the thick embryo of liner is lower 3-10mm than finished product liner height dimension；3）It squeezes, using crowded
Press will stretch the obtained thick embryo of liner and be placed in extrusion die, squeezed, obtain finished product liner；The extrusion die
Tool by pot-shaped formpiston and inner cavity formed in the former of pot-shaped, the former has ridge design pattern, the formpiston
With the ridge design pattern or no concave-convex floral designs inconsistent with former bumps floral designs, the extruding of yin, yang mould is utilized
So that the thick embryo of liner is generated local plastic flow deformation, processes that inner and outer surfaces ridge design pattern is inconsistent or inner surface is without recessed
The electromagnetic rice cooker liner of convex floral designs.
The present invention, can especially suitable for processing the liner that draw ratio is big and flange is big using the technique squeezed afterwards is first stretched
Liner is set to process inconsistent inner and outer surfaces ridge design pattern, in this way, inner surface can process shallower ridge design figure
Case（Relative to outer surface）, facilitate Sheng to take food, it is easy to clean.Since the ridge design pattern on outer surface is to add after the stretch
Work, size will not change again, accurately control the height or depth of outer surface of liner ridge design, to electromagnetism electricity meal
For pot, to accurately control firepower, cook effect and product quality are promoted.Using above-mentioned technique, make answering for equal thickness
Condensation material piece obtains the finished product liner of not uniform thickness after extrusion process, and finished product liner oral area thickness is more than the thickness of composite material sheet
Degree.
Also due to using the above-mentioned technique for first stretching and squeezing afterwards, can be processed more than 0.5mm height or depth when squeezing
Ridge design, because stretch process need not be carried out after extruding again.
Further, the composite material sheet is iron-aluminium-iron, iron-aluminium, stainless iron-aluminium-stainless steel or stainless iron-aluminium
Composite sheet, permeability magnetic material iron and stainless iron are in the outer surface of liner.Iron, stainless iron play the role of magnetic conduction, the heat conduction that aluminium has played
It acts on and ductility is good, facilitate processing.
Further, when sheet stock selects composite material sheet, bottom surface inside former and at the transition position and flange of side wall it is equal
The fillet of radius >=1mm is formed, the bottom surface of formpiston and the transition position of side form the fillet of radius >=1mm.Using this technology
Scheme can utilize composite material sheet to process liner, effectively avoid occurring composite material sheet disengagement phenomenon in process.
Further, the transition position of the bottom surface and side of the formpiston do not have ridge design pattern, so as to get liner in
The bottom surface on surface and the transition position of side do not have ridge design pattern.
Using liner made from above-mentioned manufacturing method, outer surface has ridge design pattern, the bottom surface and side of inner surface
The transition position in face does not have ridge design pattern, i.e., smooth.
Using liner made from above-mentioned manufacturing method, ridge design pattern, burr height or the dimpled grain on inner surface are deep
Degree is inconsistent with outer surface.
Using liner made from above-mentioned manufacturing method, there is ridge design pattern, inner surface not to have bumps for outer surface
Floral designs.
In addition, for draw ratio is small and the liner of small flange, it is carried out at the same time small stretching in extrusion die and part is squeezed
Pressure, the technical solution adopted by the present invention are：The manufacturing method of electromagnetic rice cooker liner, its step are as follows：1）Chip select material selects iron
Piece, stainless iron plate or outermost layer have the composite material sheet of magnetic property；2）It stretches and squeezes, it is using extruder, sheet stock is direct
It is placed in extrusion die, carries out stretching extruding, obtain finished product liner；The extrusion die by pot-shaped formpiston and inner cavity
It is formed in the former of pot-shaped, there is the former ridge design pattern, the formpiston to have and former bumps floral designs
Inconsistent ridge design pattern or no concave-convex floral designs, first makes the outer end of sheet stock be stretched, then makes using yin, yang mould
The middle part of sheet stock generates local plastic flow deformation, processes that inner and outer surfaces ridge design pattern is inconsistent or inner surface is without recessed
The electromagnetic rice cooker liner of convex floral designs.
Because when processing that draw ratio is small and the liner of small flange, stretching is required it is low, it is complete before extrusion using extrusion die
At small stretching, i.e., first stretches and squeeze afterwards.Finished product liner oral area thickness is more than the thickness of sheet stock.
Further, the transition position of the bottom surface and side of the formpiston do not have ridge design pattern, so as to get liner in
The bottom surface on surface and the transition position of side do not have ridge design pattern.
The manufacturing method of above-mentioned electromagnetic rice cooker liner, when the sheet stock replaces with aluminium flake, after liner machine-shaping,
Its outer surface or lower half outer surface partially or fully, with the method for thermal spraying, coat one or more layers permeability magnetic material.
The device have the advantages that as follows：The inconsistent electromagnetism electricity of inner and outer surfaces ridge design pattern can be processed
Rice cooker liner, the even liner for not having ridge design pattern partially or fully of inner surface, facilitate Sheng to take food, convenient clear
It washes；Outer surface ridge design height or depth can be accurately controlled, and so as to precise control of temperature, promote product quality；
The ridge design more than 0.5mm height or depth can be processed, can further improving energy efficiency and when cooking water rolling degree；It can
To select composite material sheet to be processed, avoids in process and composite material sheet disengagement phenomenon occur.
Description of the drawings
Fig. 1 is the structure chart of existing plane knurling mould.
Fig. 2 is the die drawing of existing embossing post-tensioning.
Fig. 3 is the liner figure after the present invention stretches.
Fig. 4 is the structural schematic diagram of extruding formpiston of the invention.
Fig. 5-6 is the structural schematic diagram of extruding former of the invention.
Fig. 7-8 is the structural schematic diagram for the liner that present invention manufacture obtains.
Fig. 9 is the structural schematic diagram of extruding mold of the invention.
In figure, 1- formpistons, 2- formers, 3- liners, 11- embossing cope plates, 12- embossing punch-pin, 13- positioning plates, 14- embossing
Cavity plate, 15- are embossed cavity plate backing plate, and 16- is embossed lower template, and 17- stretches cope plate, 18- upper mold connecting poles, 19- plunger tips, 20- drawings
Stretching punch-pin, 21- stretches cavity plate backing plate, and 22- stretches cavity plate, 23- blank holders, 24- stretching convex die backing plates, 25- blank holder backing plates,
26- lower die connecting poles, 27- limited posts, 28- stretch lower template, 29- plunger tip backing plates.
Specific implementation mode
Embodiment 1
When processing stretches when flange big electromagnetic rice cooker liner, its step are as follows：1）Chip select material selects stainless iron-
Aluminium composite material piece, outer layer are the stainless iron plate that 0.8mm thickness has good magnetic property, and internal layer has for 1.5mm thickness well leads
The aluminium flake of hot property；2）It stretches, carrying out stretching to sheet stock using hydraulic press forms the thick embryo of liner, the bottom of the thick embryo of liner, side wall
The height of uniform uniform thickness, the thick embryo of liner is lower 3-5mm than finished product liner height dimension, as shown in Figure 3；3）It squeezes, using extruder,
The obtained thick embryo of liner will be stretched to be placed in extrusion die, squeezed, obtain finished product liner.
As shown in Fig. 4-6,9, the extrusion die in the formpiston 1 of pot-shaped and inner cavity in the former 2 of pot-shaped by forming, institute
There is the former 2 stated ridge design pattern, the formpiston 1 to have the ridge design inconsistent with 2 ridge design pattern of former
Pattern or no concave-convex floral designs can also be that the bottom surface of formpiston and the transition position of side do not have ridge design pattern；In this way,
The inconsistent electromagnetic rice cooker liner of inner and outer surfaces pattern is processed using positive and negative mould；The outer surface of liner has ridge design
Pattern, as shown in fig. 7, the transition position of the bottom surface of inner surface and side does not have ridge design pattern, i.e., it is smooth, such as Fig. 8
It is shown.
The transition position of bottom surface and side wall inside former forms the fillet that radius is 12mm, the bottom surface of formpiston and the mistake of side
The place of crossing forms the fillet that radius is 10mm.
Embodiment 2
When processing that draw ratio is small and the electromagnetic rice cooker liner of small flange, its step are as follows：1）Chip select material selects iron-aluminium-
Iron composite material piece, inside and outside layer are the iron plate that 0.7mm thickness has good magnetic property, and middle layer, which is 1.6mm thickness, to be had well
The aluminium flake of heat conductivility；2）It stretches and squeezes, using extruder, sheet stock is directly placed in extrusion die, carries out stretching extruding,
Obtain finished product liner；The extrusion die by pot-shaped formpiston and inner cavity formed in the former of pot-shaped, the female mold
There are ridge design pattern, the formpiston that there is the ridge design pattern inconsistent with former bumps floral designs or no concave-convex to spend
The transition position of the bottom surface and side of line pattern or formpiston does not have ridge design pattern；In this way, first making sheet stock using yin, yang mould
Outer end be stretched, then make sheet stock middle part generate local plastic flow deformation, process inner and outer surfaces ridge design figure
There are the electromagnetism electricity meal of ridge design pattern and inner surface no concave-convex floral designs in the inconsistent electromagnetic rice cooker of case or outer surface
Liner is stewed, can also process outer surface has the transition position of ridge design pattern, the bottom surface of inner surface and side not have concave-convex flower
The electromagnetic rice cooker liner of line pattern.
Embodiment 3
When sheet stock replaces with the aluminium flake of 3.5mm thickness, after carrying out liner machine-shaping the step of embodiment 1 or 2, at it
Outer surface or lower half outer surface partially or fully, with the method for thermal spraying, coat one or more layers permeability magnetic material.
The above described is only a preferred embodiment of the present invention, not making any form to technical scheme of the present invention
On limitation.It is every according to the technical essence of the invention to any simple modification made by above example, equivalent variations and repair
Decorations, each fall in protection scope of the present invention.
Claims (10)
1. the manufacturing method of electromagnetic rice cooker liner, its step are as follows：1）Chip select material selects iron plate, stainless iron plate or outermost layer
Composite material sheet with magnetic property；2）Stretch, by sheet stock be put into mold carry out stretch form the thick embryo of liner, the thick embryo of liner
Height is lower 3-10mm than finished product liner height dimension；3）Squeeze, using extruder, will stretch the obtained thick embryo of liner be placed on it is crowded
It in compression mould, is squeezed, obtains finished product liner；The extrusion die by pot-shaped formpiston (1) and inner cavity in pot-shaped
Former (2) forms, and there is the former ridge design pattern, the formpiston to have inconsistent with former bumps floral designs
Ridge design pattern or no concave-convex floral designs, so that the thick embryo of liner is generated local plastic flowing using the extruding of yin, yang mould and become
Shape, processes that inner and outer surfaces ridge design pattern is inconsistent or the electromagnetic rice cooker liner of inner surface no concave-convex floral designs.
2. manufacturing method according to claim 1, which is characterized in that the composite material sheet is iron-aluminium-iron, iron-
The composite sheet of aluminium, stainless iron-aluminium-stainless steel or stainless iron-aluminium, permeability magnetic material iron and stainless iron are in the outer surface of liner.
3. manufacturing method according to claim 1, which is characterized in that when sheet stock selects composite material sheet, inside former
Bottom surface and the transition position of side wall form the fillet of radius >=1mm, the transition position of the bottom surface of formpiston and side forms radius >=1mm
Fillet.
4. manufacturing method according to claim 1, which is characterized in that the bottom surface of the formpiston and the transition position of side do not have
Have ridge design pattern, so as to get liner inner surface bottom surface and side transition position do not have ridge design pattern.
5. utilizing liner made from manufacturing method described in claim 4, which is characterized in that the outer surface of liner has ridge design
Pattern, the bottom surface of inner surface and the transition position of side do not have ridge design pattern.
6. utilizing liner made from any one of the claim 1-3 manufacturing methods, which is characterized in that the bumps on its inner surface
Floral designs, burr height or dimpled grain depth are inconsistent with outer surface.
7. utilizing liner made from any one of the claim 1-3 manufacturing methods, which is characterized in that the outer surface of liner has
Ridge design pattern, inner surface do not have ridge design pattern.
8. the manufacturing method of electromagnetic rice cooker liner, its step are as follows：1）Chip select material selects iron plate, stainless iron plate or outermost layer
Composite material sheet with magnetic property；2）It stretches and squeezes, using extruder, sheet stock is directly placed in extrusion die, into
Row, which stretches, to be squeezed, and finished product liner is obtained；The extrusion die by pot-shaped formpiston (1) and former (2) form, described the moon
Mold has ridge design pattern, the formpiston to have the ridge design pattern inconsistent with former bumps floral designs or without recessed
Convex floral designs first make the outer end of sheet stock be stretched using yin, yang mould, then generate local plastic flow deformation, process
Inner and outer surfaces ridge design pattern is inconsistent or the electromagnetic rice cooker liner of inner surface no concave-convex floral designs.
9. the manufacturing method of electromagnetic rice cooker liner according to claim 8, which is characterized in that the bottom surface of the formpiston with
The transition position of side do not have ridge design pattern, so as to get liner inner surface bottom surface and side transition position do not have it is recessed
Convex floral designs.
10. the manufacturing method of the electromagnetic rice cooker liner according to claim 1,8 or 9, which is characterized in that when the piece
Material replaces with aluminium flake, after liner machine-shaping, its outer surface partially or fully, with the method for thermal spraying, one layer of coating or
Several layers of permeability magnetic material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610265024.9A CN105921639B (en) | 2016-04-26 | 2016-04-26 | The manufacturing method of electromagnetic rice cooker liner and thus obtained liner |
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| CN201610265024.9A CN105921639B (en) | 2016-04-26 | 2016-04-26 | The manufacturing method of electromagnetic rice cooker liner and thus obtained liner |
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| CN105921639B true CN105921639B (en) | 2018-07-27 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016116758A1 (en) * | 2016-09-07 | 2018-03-08 | Thyssenkrupp Ag | Method and device for producing shaped, in particular flange-shaped, sheet-metal components |
| DE102016118418A1 (en) | 2016-09-29 | 2018-03-29 | Thyssenkrupp Ag | Method for producing a molded component with a dimensionally stable frame area |
| CN107649563B (en) * | 2017-09-19 | 2019-06-07 | 浙江康家宝炊具有限公司 | The production method of cookware outer surface decorative pattern and the pot of application this method manufacture |
| CN107755445A (en) * | 2017-10-19 | 2018-03-06 | 成都锦江电子系统工程有限公司 | A kind of extending and extrusion molding dies and method with polymorphic structure box part |
| CN113020472B (en) * | 2021-03-10 | 2023-02-17 | 肇庆市广盛沥铝铝业有限公司 | Stretch forming equipment for inner container of household electric rice cooker |
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| CN105921639A (en) | 2016-09-07 |
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Address after: No.1, Fourth Street, East New District, Wenling City, Taizhou City, Zhejiang Province Co-patentee after: ZHEJIANG ASD DOMESTIC ELECTRICAL APPLIANCE Co.,Ltd. Patentee after: Ashtar Co.,Ltd. Address before: 317500 No. 2, science and technology road, Wenling Economic Development Zone, Zhejiang, Taizhou Co-patentee before: ZHEJIANG ASD DOMESTIC ELECTRICAL APPLIANCE Co.,Ltd. Patentee before: Zhejiang Aishida Electric Co.,Ltd. |