CN101554287B - Process technology of boiler for induction cooker - Google Patents
Process technology of boiler for induction cooker Download PDFInfo
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- CN101554287B CN101554287B CN2008100711474A CN200810071147A CN101554287B CN 101554287 B CN101554287 B CN 101554287B CN 2008100711474 A CN2008100711474 A CN 2008100711474A CN 200810071147 A CN200810071147 A CN 200810071147A CN 101554287 B CN101554287 B CN 101554287B
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Abstract
The invention discloses a process technology of an aluminum pot for an induction cooker, mainly comprising the following steps: a casting process, a simple shaping process, a bottom surface processingprocess, a special shaping process, and the like, in the special shaping process, a shaping die is used for special shaping, the shaping die consists of an upper die and a lower die, the proximal edg e of the upper die, which corresponds to ribs positioned at the bottom of the aluminum pot, is provided with salient points, and the shape of the lower die is similar to the inner surface of the aluminum pot; the aluminum pot is firstly placed between the upper die and the lower die during shaping, and then special equipment is adopted to extrude the ribs positioned on the inner bottom surface andthe outer flat surface of the aluminum pot; aluminum molecular structures are changed at a punching position during punching due to the installation of the shaping upper die, thus the aluminum molecu lar structures are compacter and are enhanced in the cohesive degree; after the shaping, the adherence between a non-rust iron plate and aluminum contacted with the non-rust iron plate is enhanced, i.e. the non-rust iron plate is more tightly matched with the aluminum and better contacted and inosculated with the aluminum, and the non-rust iron plate can uniformly conduct heat to the aluminum in the heat conduction process.
Description
Technical field
The present invention relates to a kind of pot processing technology, refer to a kind of processing technology of boiler for induction cooker especially.
Background technology
Usually, the bottom of a pan of boiler for induction cooker is provided with stainless iron plate, and this is because the magnetic property of aluminium is bad, and can increase the biography magnetic property by stainless iron plate is set, and is burnt heat thereby the order pot is very fast.Yet because aluminium is different with the thermal coefficient of expansion of stainless iron, when heating, aluminium is just different with the deflection of stainless iron, thereby can cause a pot body deformability, even the stainless iron plate of monoblock can come off from the bottom of a pan like this.
At above-mentioned deficiency, the solution of existing product is: offer some hollow holes on the stainless iron plate of a monoblock, the position of corresponding hollow hole forms rib in the aluminum the bottom of a pan, so that both are mounted in together.
The said structure aluminum pot is to adopt the mode of punching press to process in early days.As Chinese utility model patent, Granted publication CN2544654Y, title: at the bottom of the compound pot of aluminium matter pot.The aluminum pot of this patent is to rout up a plurality of hole flangings in the surperficial punching press of steel plate, cold extrusion is carried out in the bottom that steel plate is fitted in the aluminium matter the bottom of a pan again, make in the hole flanging that is squeezed into after the aluminum metal distortion in the aluminium matter the bottom of a pan on the steel plate, hole flanging limit on the steel plate is inserted in the aluminium matter the bottom of a pan simultaneously, tightly embrace with the bottom of a pan, steel plate is composite and fixed on the bottom in the aluminium matter the bottom of a pan.There is following weak point in this cold-stamped processing mode: at first, the equipment that needs is had relatively high expectations, and stamping machine will be more than 800～1000 tons usually; Secondly, aluminium distortion and after being squeezed in the hole flanging of steel plate, its edge certainly will be fillet (shown in Figure 1A), will have gap a between this fillet place and the steel plate hole flanging, so steam infiltrates in this gap easily, thus steel plate is come off; The 3rd, cold-stamped mode steel plate is not again through a heat treatment, so steel plate in use, and is yielding behind the chance high temperature, thereby makes the bottom of a pan out-of-flatness.
Afterwards, having the dealer to adopt the method for secondary punching press, is CN1891117A as publication number, and name is called: compound polycrystalline substance of cooker and patent thereof the Chinese invention patent case of mould and manufacture method.After this application case adopts the method for secondary punching press, on the bore edges of steel plate and aluminum base, formed interconnective joint portion and caulking part respectively, thereby can have preferable interlocking intensity.But still there is following deficiency in this kind processing mode: 1. the pressing equipment of the same high tonnage of needs; 2. when using flat-die to stamp out the caulking part of base plate, the edge of this caulking part can form fillet (shown in Figure 1B) equally, this fillet place will and steel plate between form gap a, thereby steam is infiltrated, therefore equally promptly produce the problem that comes off; 3. because when first time punching press, the amount of the aluminium that each place, hole of steel plate is pushed out can not be all identical, thereby can make degree of compacting (the being the obvolvent degree) difference in each hole, will cause the conjugation grade difference at the bottom of the whole cooker like this, can cause that also steel plate comes off.
Above-mentioned cold-stamped processing mode is to make metal material distortion back rabbet together mutually by force, and its processing and manufacturing difficulty is big, cause easily and scrap, production cost is higher, and use all easily forms the gap between two kinds of materials long afterwards, therefore steel plate comes off easily, and service life is not long.
At the weak point of above-mentioned aluminum pot employing cold stamping method for making, Chinese invention patent application publication number CN1846577A discloses a kind of cast aluminium cooker and manufacture method thereof that can be used for electromagnetic oven.This application case adopts the mode of casting that steel plate is cast in the chassis of cooker, adds the one-shot forming in man-hour, need not to be pressed into by force steel plate, the yield rate height.But, this cooker aluminium liquid is wrapped in steel plate wherein fully, only the flange at steel plate through hole edge is exposed to the outer surface on chassis, when long-term the use, because of two kinds of material differences, the coefficient difference of expanding with heat and contract with cold, easily produce the gap between two kinds of materials, especially locate, because this aluminium b of place and aluminium chassis junction are seldom at aluminium b (shown in Fig. 1 C) by steel plate and flange parcel thereof, therefore very easily perk and make the bottom of a pan out-of-flatness, and then influence service life.
Summary of the invention
The object of the present invention is to provide a kind of processing technology of boiler for induction cooker, it can make stainless iron plate engage tightr and difficult drop-off with the bottom of a pan.
For achieving the above object, technical solution of the present invention is:
A kind of processing technology of boiler for induction cooker, it comprises:
Step 1: casting cycle
The stainless iron plate with some hollow holes with machine-shaping in advance is fixed on the die cavity that moulding has aluminum pot outer surface of pot bottom shape earlier; This die cavity inner surface is provided with some grooves, and this groove is relative with the hollow hole of stainless iron plate, and its shape is identical with this hollow hole, and size is bigger than hollow hole; Matched moulds carries out cast aluminum liquid then, and the cooling aftershaping goes out the blank aluminum pot, and this blank aluminum pot forms rib at the hollow hole of stainless iron plate and groove, and the position that groove exceeds hollow hole forms flanging, in this flanging is coated on the edge of described stainless iron plate;
Step 2: simple shaping and processing bottom surface process
Cut away earlier and gravy with meat or vegetables poured over rice or noodles, take common plane shaping mode to adjust then, make the interior of pot reach smooth, parallel, and take the rough rib outer surface in machining bottom surface with outer bottom;
Step 3: special shaping process
Utilize sizing die to carry out special shaping, this sizing die is divided into patrix and counterdie, and the proximal edge of the corresponding the bottom of a pan of this patrix rib is provided with salient point, and the shape of counterdie is suitable with the pot inner surface; During shaping, earlier pot is positioned between the upper and lower mould, adopts the rib on special equipment extrusion pot inner bottom surface and the outer bottom then.
The die cavity that described moulding has aluminum pot outer surface of pot bottom shape is an epicoele, and the inner surface structure of the inner cavity surface structure of cavity of resorption and aluminum pot is suitable; Described stainless iron plate be positioned over earlier in the cavity of resorption the plane on, adopt the electromagnet principle that the suction of stainless iron plate is affixed on the epicoele during matched moulds.
The die cavity that described moulding has aluminum pot outer surface of pot bottom shape is a cavity of resorption, and the inner surface structure of the inner cavity surface structure of epicoele and aluminum pot is suitable; Described stainless iron plate is positioned on the cavity of resorption.
Described stainless iron plate is adopted the electromagnet principle to inhale and is fixed in cavity of resorption.
Described processing technology also comprises step 4: fine finishining process, this fine finishining process are exactly thick poor She's amount of dispeling on the blank.
After adopting such scheme, the present invention has following beneficial effect:
1. the present invention adopts sizing die to carry out special shaping; And the proximal edge of the corresponding the bottom of a pan of the patrix of this sizing die rib is provided with salient point, the setting of this salient point, when punching press, the aluminium molecular structure of punching press place is changed, make its structure more compact, thereby can increase its obvolvent degree, like this after the shaping, make stainless iron plate and the adherence that contacted between the aluminium is strengthened, that is to say that to make stainless iron plate tightr with cooperating of aluminium, contact, anastomose property is better, and stainless iron plate can evenly be conducted heat to aluminium in diabatic process.Also can prevent from addition to use materials such as causing moisture to be immersed in the slit between aluminium and the stainless iron plate, cause stainless iron plate easily to come off and influence the life-span because of heating repeatedly, cooling off.
2. the special equipment that is used for above-mentioned special shaping only need adopt 300 tons stamping machine, less demanding to equipment, and cost is also lower.
3. the present invention is in casting cycle, though being the inner surface or the outer surface of pot, the shape of upper and lower mould inner cavity surface can arbitrarily be provided with, but the external surface shape of preferred pot is an epicoele, then stainless iron plate is positioned over earlier on the cavity of resorption, inhales in epicoele by the mode of magnetic, this mode can make casting more abundant, and adopt upper and lower cavity to put upside down the mode of setting, the phenomenon that misrun then often occurs especially in the flanging position of rib, more is prone to the discontented phenomenon of casting.
Description of drawings
Figure 1A is existing partial enlarged drawing with the cold stamping mode machine-shaping aluminum pot the bottom of a pan;
Figure 1B is existing partial enlarged drawing with the secondary impact style machine-shaping aluminum pot the bottom of a pan;
Fig. 1 C is the partial enlarged drawing that has now with the aluminum pot the bottom of a pan of casting mode machine-shaping;
Fig. 2 is processing process figure of the present invention;
Fig. 3 A is the schematic diagram that casting cycle of the present invention is installed stainless iron plate;
Fig. 3 B is a casting cycle matched moulds view of the present invention;
Fig. 3 C is a casting cycle cast aluminium liquid status schematic diagram of the present invention;
Fig. 4 A is the blank structural representation after the cast molding of the present invention;
Fig. 4 B is that the present invention cuts away the blank schematic diagram of gravying with meat or vegetables poured over rice or noodles;
Fig. 4 C is simple shaping of the present invention and the schematic diagram of processing the bottom surface;
Fig. 5 A is the special shaping process of a present invention schematic diagram;
Fig. 5 B is the profile before and after the shaping in the special shaping process of the present invention;
Fig. 6 A is an interior machining shape schematic diagram in the fine finishining process of the present invention;
Fig. 6 B is fine finishining process of the present invention China and foreign countries machining shape schematic diagrames;
Fig. 7 is the schematic perspective view by the aluminum pot of processing mode moulding of the present invention;
Fig. 8 is the cutaway view of aluminum pot shown in Figure 7.
The specific embodiment
As shown in Figure 2, the processing technology of boiler for induction cooker of the present invention comprises the steps:
Step 1: casting cycle
The stainless iron plate 2 with some hollow holes that earlier will machine-shaping in advance is placed on the interior plane of moulding cavity of resorption 31 (as Fig. 3 A), the inner cavity surface structure of this cavity of resorption 31 is suitable with the inner surface structure of aluminum pot, and the inner cavity surface of moulding epicoele 32 is provided with some grooves 33, this groove 33 is relative with the hollow hole of stainless iron plate 2, and its shape is identical with this hollow hole, and size is bigger than hollow hole; The electromagnet of matched moulds, and employing then principle is affixed to (as Fig. 3 B) on the epicoele 32 with stainless iron plate 2 by the electromagnetism suction that is arranged at epicoele 32; Carry out cast aluminum liquid (as Fig. 3 C) afterwards, the cooling aftershaping goes out blank aluminum pot 1, this blank aluminum pot 1 forms rib 11 at groove 33 places of the hollow hole of stainless iron plate 2 and epicoele 32, and the position that groove 33 exceeds hollow hole forms flanging 12, in this flanging 12 is coated on the edge of described stainless iron plate 2.
Step 2: simple shaping and processing bottom surface process
Take out the blank of this cast molding, after natural cooling, shrinking, deformed shape appears in blank, shown in Fig. 4 A, the interior outer bottom of this blank aluminum pot 1 will form arc, therefore must take common plane shaping mode to adjust, and make the interior of pot reach smooth, parallel with outer bottom.In addition, rib 11 outer surfaces that the openwork hole of stainless iron plate 2 forms also are rough, can influence follow-up shaping process.So this step at first will be cut away gravy with meat or vegetables poured over rice or noodles (as Fig. 4 B), carry out simple flat surface shaping and processing bottom surface (as Fig. 4 C) then, and the processing of this bottom surface and rib outer surface can be taked the machining mode.
Step 3: special shaping process
Utilize sizing die to carry out special shaping.Shown in Fig. 5 A, this sizing die is divided into patrix 41 and counterdie 42, and the proximal edge of these patrix 41 corresponding the bottom of a pan ribs 11 is provided with salient point 43, and the shape of counterdie 42 is suitable with the pot inner surface.During shaping, earlier pot is positioned between the upper and lower mould 41,42, adopts special-purpose pressing equipment extrusion pot inner bottom surface and the rib 11 on the outer bottom then.Because the setting of salient point 43, when punching press, the aluminium molecular structure of punching press place is changed, make its structure more compact (shown in Fig. 5 B), thereby can increase its obvolvent degree, like this after the shaping, the adherence that can make stainless iron plate 2 and be contacted between the aluminium is strengthened, that is to say that to make stainless iron plate 2 tightr with cooperating of aluminium, contact, anastomose property are better, and stainless like this iron plate 2 can evenly be conducted heat to aluminium in diabatic process.Also can prevent from addition to use materials such as causing moisture to be immersed in the slit between aluminium and the stainless iron plate, cause stainless iron plate easily to come off and influence the life-span because of heating repeatedly, cooling off.Because the needed stamping press of this special shaping process is little, therefore only need to adopt about 300 tons stamping machine to get final product, so equipment is less demanding.
Step 4: fine finishining process
This fine finishining process is exactly the thick poor surplus of dispeling on the blank 6, makes pot surfaces externally and internally gloss beautiful, is interior machining shape schematic diagram as shown in Figure 6A; Then be outer processing shape schematic diagram shown in Fig. 6 B, so promptly process the finished product aluminum pot shown in Fig. 7,8.The bottom of a pan of this finished product aluminum pot 1 has the stainless iron plate 2 of one deck, have the hollow hole of some strips or round point shape on this stainless iron plate 2, to position that should hollow hole, form the rib 11 of strip or round point shape on this bottom of a pan, the edge of this rib 11 outwards forms flanging 12, in this flanging 12 is coated on the edge of described stainless iron plate 2.
Need to prove, in casting cycle, the set-up mode that also can take the chamber shape with upper and lower cavity to put upside down, directly stainless iron plate is positioned on the cavity of resorption that forms the pot outer bottom then, cast again, also can adopt the electromagnet principle simultaneously, the suction of stainless iron plate is fixed in cavity of resorption.
Claims (5)
1. the processing technology of a boiler for induction cooker is characterized in that this processing technology comprises:
Step 1: casting cycle
The stainless iron plate with some hollow holes with machine-shaping in advance is fixed on the die cavity that moulding has aluminum pot outer surface of pot bottom shape earlier; This die cavity inner surface is provided with some grooves, and this groove is relative with the hollow hole of stainless iron plate, and its shape is identical with this hollow hole, and size is bigger than hollow hole; Matched moulds carries out cast aluminum liquid then, and the cooling aftershaping goes out the blank aluminum pot, and this blank aluminum pot forms rib at the hollow hole of stainless iron plate and groove, and the position that groove exceeds hollow hole forms flanging, in this flanging is coated on the edge of described stainless iron plate;
Step 2: simple shaping and processing bottom surface process
Cut away earlier and gravy with meat or vegetables poured over rice or noodles, take common plane shaping mode to adjust then, make the interior of pot reach smooth, parallel, and take the rough rib outer surface in machining bottom surface with outer bottom;
Step 3: special shaping process
Utilize sizing die to carry out special shaping, this sizing die is divided into patrix and counterdie, and the proximal edge of the corresponding the bottom of a pan of this patrix rib is provided with salient point, and the shape of counterdie is suitable with the pot inner surface; During shaping, earlier pot is positioned between the upper and lower mould, adopts the rib on special equipment extrusion pot inner bottom surface and the outer bottom then.
2. the processing technology of boiler for induction cooker according to claim 1, it is characterized in that: the die cavity that described moulding has aluminum pot outer surface of pot bottom shape is an epicoele, and the inner surface structure of the inner cavity surface structure of cavity of resorption and aluminum pot is suitable; Described stainless iron plate is positioned over earlier on the interior plane of cavity of resorption, adopts the electromagnet principle that the suction of stainless iron plate is affixed on the epicoele during matched moulds.
3. the processing technology of boiler for induction cooker according to claim 1, it is characterized in that: the die cavity that described moulding has aluminum pot outer surface of pot bottom shape is a cavity of resorption, and the inner surface structure of the inner cavity surface structure of epicoele and aluminum pot is suitable; Described stainless iron plate is positioned on the cavity of resorption.
4. as the processing technology of boiler for induction cooker as described in the claim 3, it is characterized in that: described stainless iron plate is adopted the electromagnet principle to inhale and is fixed in cavity of resorption.
5. as the processing technology of boiler for induction cooker as described in one of claim 1-4, it is characterized in that: described processing technology also comprises step 4: fine finishining process, this fine finishining process are exactly the thick poor surplus of dispeling on the blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100711474A CN101554287B (en) | 2008-05-27 | 2008-05-27 | Process technology of boiler for induction cooker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100711474A CN101554287B (en) | 2008-05-27 | 2008-05-27 | Process technology of boiler for induction cooker |
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| CN101554287A CN101554287A (en) | 2009-10-14 |
| CN101554287B true CN101554287B (en) | 2010-12-29 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102349788A (en) * | 2011-09-01 | 2012-02-15 | 解叶峰 | Pan structure for electromagnetic oven and surface treating method thereof |
| CN103181718A (en) * | 2011-12-30 | 2013-07-03 | 胡程韶 | Aluminum boiler with compound bottom and manufacturing method thereof |
| CN103192059B (en) * | 2013-03-29 | 2015-05-20 | 福建鼎厨王厨具有限公司 | Method for manufacturing aluminum pot used by special mold for gravity cast energy-saving aluminum pot |
| CN103330474B (en) * | 2013-07-02 | 2016-03-02 | 郑春园 | A kind of magnetic-conductive cooker and process for making thereof |
| CN108784292A (en) * | 2017-05-05 | 2018-11-13 | 浙江金拓机电有限公司 | A kind of aluminum pot and its manufacturing method |
| CN113102951A (en) * | 2021-04-19 | 2021-07-13 | 永康市德邻美铝业有限公司 | One-step forming method of composite bottom aluminum pot |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2807987Y (en) * | 2005-07-14 | 2006-08-23 | 权贞惠 | Cast aluminum pot for electromagnetic oven |
| CN1846577A (en) * | 2006-05-15 | 2006-10-18 | 浙江苏泊尔炊具股份有限公司 | Cast aluminium cooking utensil for electromagnetic oven and its making process |
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- 2008-05-27 CN CN2008100711474A patent/CN101554287B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2807987Y (en) * | 2005-07-14 | 2006-08-23 | 权贞惠 | Cast aluminum pot for electromagnetic oven |
| CN1846577A (en) * | 2006-05-15 | 2006-10-18 | 浙江苏泊尔炊具股份有限公司 | Cast aluminium cooking utensil for electromagnetic oven and its making process |
Non-Patent Citations (2)
| Title |
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| JP特开平11067438A 1999.03.09 |
| JP特开平9182667A 1997.07.15 |
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Effective date of registration: 20160520 Address after: 363900 ancient agricultural silver pond Industrial Park, Changtai Economic Development Zone, Zhangzhou, Fujian Patentee after: Fujian surplus metal products Co., Ltd. Address before: 361006 No. 44 Huli Avenue, Fujian, Xiamen Patentee before: Xiamen Anlian Enterprise Co., Ltd. |