CN214804081U - Pot with double bottom - Google Patents
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- CN214804081U CN214804081U CN202121098723.1U CN202121098723U CN214804081U CN 214804081 U CN214804081 U CN 214804081U CN 202121098723 U CN202121098723 U CN 202121098723U CN 214804081 U CN214804081 U CN 214804081U
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Abstract
The embodiment of the application provides a pot with compound bottom, include: a pan base; the first corrosion-resistant layer is arranged on the outer surface of the pot base body; and the composite bottom plate is arranged on the outer surface of the first corrosion-resistant layer and is positioned at the bottom of the pot base body. In the double-bottom pan provided by the embodiment, the first corrosion-resistant layer is arranged on the outer surface of the pan base body, then the double bottom is carried out, and the double bottom sheet is contacted with the first corrosion-resistant layer and is arranged at the bottom of the pan base body. The pot base body is protected by the first corrosion-resistant layer, so that the corrosion phenomenon caused by the fact that the outer surface of the pot base body is directly exposed can be effectively avoided. Even if the composite bottom plate is provided with the inserting and riveting hole, only the first corrosion-resistant layer is exposed through the inserting and riveting hole. The double-bottom pot is clean in the dish washer and is not easy to corrode, and the service life of the double-bottom pot is prolonged.
Description
Technical Field
The application relates to the field of cookers, in particular to a double-bottom pot.
Background
Most of the prior aluminum double-bottom pots are provided with a double-bottom sheet with holes at the bottom of an aluminum substrate, and a part of the aluminum substrate is exposed through inserting riveting holes on the double-bottom sheet, so that the exposed part of the aluminum substrate is not protected by a coating and is easy to corrode.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the present application is to provide a double-bottom pan.
In order to achieve the above object, an embodiment of the first aspect of the present application provides a double-bottom pan, including: a pan base; the first corrosion-resistant layer is arranged on the outer surface of the pot base body; and the composite bottom plate is arranged on the outer surface of the first corrosion-resistant layer and is positioned at the bottom of the pot base body.
In the double-bottom pan provided by the embodiment, the first corrosion-resistant layer is arranged on the outer surface of the pan base body, then the double bottom is carried out, and the double bottom sheet is contacted with the first corrosion-resistant layer and is arranged at the bottom of the pan base body. The pot base body is protected by the first corrosion-resistant layer, so that the corrosion phenomenon caused by the fact that the outer surface of the pot base body is directly exposed can be effectively avoided. Even if the composite bottom plate is provided with the inserting and riveting hole, only the first corrosion-resistant layer is exposed through the inserting and riveting hole. The double-bottom pot is clean in the dish washer and is not easy to corrode, and the service life of the double-bottom pot is prolonged.
In some embodiments, the composite bottom plate is provided with a plurality of plug-rivet holes, the composite bottom plate is embedded in the outer surface of the first corrosion-resistant layer, and a part of the first corrosion-resistant layer is exposed through the plurality of plug-rivet holes.
In the embodiments, the composite bottom plate is provided with a plurality of inserting and riveting holes, so that the composite bottom plate and the pot base body are connected in an inserting and riveting mode and are firmly connected. Moreover, the first corrosion-resistant layer covers the outer surface of the pot base body, so that the part exposed through the inserting and riveting hole is the first corrosion-resistant layer, the pot base body can be effectively protected, and the corrosion phenomenon of the pot base body is avoided.
In some embodiments, the plurality of stake holes are evenly distributed about a centerline of the pan base. Is beneficial to the stable connection of the pan base body and the composite bottom sheet and ensures the uniform heat transfer of all parts of the composite bottom pan.
In some embodiments, the first corrosion-resistant layer has a thickness in a range from 10 μm to 15 μm. If the thickness of the corrosion-resistant layer is thin, the corrosion-resistant effect is affected, and if the thickness of the corrosion-resistant layer is thick, the processing time is increased. Therefore, the thickness of the first corrosion-resistant layer is between 10 and 15 μm, the corrosion-resistant effect is good, and the processing is convenient and quick.
In some embodiments, the first corrosion-resistant layer is spray formed on the outer surface of the pan base. The connection is firm.
In some embodiments, the exterior surface of the pan base includes a satin finish formed by a sanding process, and the first corrosion-resistant layer is sprayed on the satin finish. The outer surface of the pot base body is sanded in advance to form a sanded surface with uneven surface, so that the connection firmness of the first corrosion-resistant layer and the pot base body is improved.
In some embodiments, the pan substrate is an aluminum substrate.
In some embodiments, the composite bottom sheet is a composite bottom steel sheet. The double-bottom steel sheet can generate heat under the action of the coil, so that the double-bottom pot is favorably matched with the induction cooker for use.
In some embodiments, a middle portion of the bottom of the pan base is recessed inwardly. The edge of the bottom of the pot base body is conveniently and stably placed on the platform, and the problem that the middle part of the heated bottom of the pot base body protrudes outwards to influence the placing stability of the double-bottom pot is avoided.
Further, the depth of the depression ranges from 0.3mm to 1.2 mm. Enough margin is left for the bottom of the double-bottom pot to be heated and protrude outwards. Of course, the depth of the recess may not be in the range of 0.3mm to 1.2mm, and may be determined according to the size of the double-bottom pot.
It should be noted that, the depth of the default recess in this application is the inward recess depth of the maximum inward recess at the bottom of the multi-bottom pot.
In some embodiments, the double-bottom pan further comprises: the non-stick layer is arranged on the inner surface of the pan base body. The non-stick effect of the double-bottom pot is ensured.
In some embodiments, the thickness of the non-stick layer ranges from 30 μm to 40 μm. If the thickness of the non-stick layer is thin, the non-stick effect is affected, and if the thickness of the non-stick layer is thick, the thickness of the double-bottom pot is increased, the sense organ is affected, and the non-stick layer is easy to fall off. Therefore, the thickness of the non-stick layer is between 30 and 40 microns, the non-stick effect is good, the non-stick layer cannot fall off due to over-thickness, and the light and thin double-bottom pan is favorably realized.
Drawings
The above and other objects and features of the present application will become more apparent from the following description of embodiments thereof taken in conjunction with the accompanying drawings, in which:
FIG. 1 shows a schematic cross-sectional view of a double-bottomed pan of an embodiment of the present application;
FIG. 2 shows a schematic view of the structure of a composite bottom sheet of one embodiment of the present application;
FIG. 3 shows a schematic bottom view of a double-bottomed pan of an embodiment of the present application;
FIG. 4 illustrates a flow chart of a method of making a double-bottomed pan of an embodiment of the present application;
the reference numbers illustrate:
100 pan basal body, 110 first corrosion-resistant layer, 120 double bottom plate, 121 plug rivet hole.
Detailed Description
The multi-bottom pan and the method for manufacturing the same according to some embodiments of the present application will be described with reference to fig. 1 and 4.
This application may, however, be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
FIG. 1 shows a schematic cross-sectional view of a double-bottomed pan of an embodiment of the present application. Figure 2 shows a schematic view of the structure of a double bottom sheet 120 according to an embodiment of the present application. FIG. 3 shows a schematic bottom view of a double-bottom pan according to an embodiment of the present application. As shown in fig. 1 to 3, an embodiment of the first aspect of the present application provides a double-bottom pan, including: a pan base 100; a first corrosion-resistant layer 110 disposed on an outer surface of the pot base 100; and the composite bottom plate 120 is arranged on the outer surface of the first corrosion-resistant layer 110 and is positioned at the bottom of the pot base body 100.
In the double-bottom pan provided in this embodiment, the first corrosion-resistant layer 110 is firstly disposed on the outer surface of the pan base 100, and then the double-bottom is performed, and the double-bottom sheet 120 is in contact with the first corrosion-resistant layer 110 and is disposed at the bottom of the pan base 100. The pot base 100 is protected by the first corrosion-resistant layer 110, so that the corrosion phenomenon caused by the direct exposure of the outer surface of the pot base 100 can be effectively avoided. Even if the composite bottom sheet 120 has the insertion-riveting hole 121, only the first corrosion-resistant layer 110 is exposed through the insertion-riveting hole 121. The double-bottom pot is clean in the dish washer and is not easy to corrode, and the service life of the double-bottom pot is prolonged.
Moreover, because the first corrosion-resistant layer 110 is arranged on the inner side of the composite bottom sheet 120, compared with the scheme of firstly coating the bottom and then spraying the corrosion-resistant layer, the method avoids the sanding step for removing the corrosion-resistant layer sprayed on the composite bottom sheet 120, simplifies the processing technology, avoids scratching the use panel of an induction cooker and the like due to the occurrence of deep and shallow abrasive belt marks, is not easy to store dirt and contain dirt, and is convenient to clean the bottom of the pan.
In the present application, the outer surface of the pot base 100 may be an untreated base material surface or an outer surface which has been subjected to a surface treatment in advance.
For example, the outer surface of the pot base 100 is first oxidized to form a first oxide layer, and then the first corrosion-resistant layer 110 is provided on the outer surface of the first oxide layer, and then the double bottom is performed. The pot base 100 is protected by the first oxide layer and the first corrosion-resistant layer 110, so that the corrosion phenomenon caused by the direct exposure of the outer surface of the pot base 100 can be effectively avoided.
In some embodiments, a plurality of inserting and riveting holes 121 are formed in the composite bottom sheet 120, the composite bottom sheet 120 is embedded in the outer surface of the first corrosion-resistant layer 110, and a portion of the first corrosion-resistant layer 110 is exposed through the plurality of inserting and riveting holes 121, so that the connection is firm. Moreover, since the outer surface of the pot base 100 is covered with the first corrosion-resistant layer 110, the part exposed through the inserting and riveting hole 121 is the first corrosion-resistant layer 110, so that the pot base 100 can be effectively protected, and the corrosion phenomenon of the pot base 100 can be avoided.
In some embodiments, the plurality of stake holes 121 are evenly distributed about a centerline of the pan base 100. Is beneficial to the stable connection of the pan base body 100 and the composite bottom sheet 120 and ensures the uniform heat transfer of all parts of the composite bottom pan.
In some embodiments, the first corrosion-resistant layer 110 is made to have a thickness in a range of 10 μm to 15 μm. If the thickness of the corrosion-resistant layer is thin, the corrosion-resistant effect is affected, and if the thickness of the corrosion-resistant layer is thick, the processing time is increased. Therefore, the first corrosion-resistant layer 110 is made to have a thickness of 10 μm to 15 μm, the corrosion-resistant effect is good, and the processing is convenient and fast.
In some embodiments, the first corrosion-resistant layer 110 is spray-formed on the outer surface of the pot base 100. The connection is firm.
In some embodiments, the exterior surface of the pan base 100 includes a frosted finish formed by a sanding process, and the first corrosion-resistant layer 110 is sprayed on the frosted finish. The outer surface of the pot base body 100 is sanded in advance to form a sanded surface with uneven surface, which is beneficial to improving the connection firmness of the first corrosion-resistant layer 110 and the pot base body 100.
In some embodiments, the pan base 100 is an aluminum base.
In some embodiments, composite bottom sheet 120 is a composite bottom steel sheet. The double-bottom steel sheet can generate heat under the action of the coil, so that the double-bottom pot is favorably matched with the induction cooker for use. And the heat transfer effect is good.
In some embodiments, the middle portion of the bottom of the pan base 100 is recessed inward relative to the outer edge, so that the outer edge of the bottom of the pan base 100 can be stably placed on the platform, and the situation that the middle portion of the heated bottom of the pan base 100 protrudes outward to affect the placement stability of the double-bottom pan is avoided.
Further, the depth of the depression ranges from 0.3mm to 1.2 mm. Enough margin is left for the bottom of the double-bottom pot to be heated and protrude outwards. Of course, the depth of the recess may not be in the range of 0.3mm to 1.2mm, and may be determined according to the size of the double-bottom pot.
In some embodiments, the multiple-bottom pan further comprises a non-stick layer disposed on the inner surface of the pan base 100. The non-stick effect of the double-bottom pot is ensured.
In a specific application, the non-stick layer is spray formed on the inner surface of the pan base 100.
Further, the thickness of the non-stick layer is made to range from 30 μm to 40 μm. If the thickness of the non-stick layer is thin, the non-stick effect is affected, and if the thickness of the non-stick layer is thick, the thickness of the double-bottom pot is increased, the sense organ is affected, and the non-stick layer is easy to fall off. Therefore, the thickness of the non-stick layer is between 30 and 40 microns, the non-stick effect is good, the non-stick layer cannot fall off due to over-thickness, and the light and thin double-bottom pan is favorably realized.
In some embodiments, the inner surface of the pot base 100 is also subjected to an oxidation treatment, a second oxidation layer (not shown) is disposed on the inner surface of the pot base 100, and a non-stick layer (not shown) is disposed on the outer surface of the second oxidation layer, so that the non-stick effect is good.
In a specific application, the first oxide layer and the second oxide layer may be integrally formed on the inner and outer surfaces of the pot base 100 by oxidation. The thickness of the first oxide layer and the second oxide layer is made to be in the range of 30 μm to 40 μm. If the thickness of the oxide layer is thin, the wear-resistant and corrosion-resistant effects are affected, and if the thickness of the oxide layer is thick, the metal texture of the pot base body 100 is affected, and the processing time is increased. Therefore, the thickness of the oxide layer is between 30 μm and 40 μm, the wear-resistant and corrosion-resistant effects are strong, the processing is convenient and fast, and the metal texture of the pot substrate 100 is not affected.
Embodiments of a second aspect of the present application provide a method for manufacturing a double-bottom pan, which may be used to manufacture the double-bottom pan in the above embodiments, and the method for manufacturing the double-bottom pan in some embodiments of the present application is described in detail below.
Fig. 4 shows a flow chart of a method of making a double-bottomed pan according to an embodiment of the present application. As shown in fig. 4, the preparation method comprises the following steps:
s210: forming a pot base body;
s220: oxidation treatment: carrying out oxidation treatment on the pot base body to form an oxide layer;
s230: external spraying: spraying corrosion-resistant paint on the outer surface of the pot substrate to cover a corrosion-resistant layer on the surface of the oxide layer;
s240: external sintering: sintering the corrosion-resistant coating to solidify the corrosion-resistant layer;
s250: compounding the bottom: and the composite bottom plate is arranged on the outer surface of the corrosion-resistant layer at the outer side of the bottom of the pot base body.
In the preparation method of the double-bottom pan provided by this embodiment, the oxidation layer is formed by oxidizing the surface of the pan base, then the corrosion-resistant layer is formed by spraying on the surface of the oxidation layer, specifically, the corrosion-resistant layer is located on the outer surface of the pan base, then the double bottom is performed, and the double bottom sheet is contacted with the corrosion-resistant layer and is arranged at the bottom of the pan base. The pot base body is protected by the oxidation layer and the corrosion-resistant layer, so that the corrosion phenomenon caused by the direct exposure of the outer surface of the pot base body can be effectively avoided. Even if the composite bottom plate is provided with the inserting and riveting holes, only the corrosion-resistant layer is exposed through the inserting and riveting holes. The double-bottom pot is clean in the dish washer and is not easy to corrode, and the service life of the double-bottom pot is prolonged.
The manufacturing process of the composite-bottom pot in the related technology comprises the following steps: forming a pot matrix, trimming a mouth, inserting and riveting the bottom to compound the bottom, performing inner sand blasting, performing outer sanding, pasting an oxidation protection film on the bottom, oxidizing, tearing the oxidation protection film, spraying a non-stick coating in the inner direction, sintering, spraying a corrosion-resistant coating in the outer direction, sintering, preparing the bottom, assembling, and packaging to obtain a finished product. The inner sand blasting is sand blasting on the inner surface of the pot base, the outer sanding is sand blasting on the outer surface of the pot base, the inner spraying of the non-stick coating is spraying of the non-stick coating on the inner surface of the pot base, and the outer spraying of the corrosion-resistant coating is spraying of the corrosion-resistant coating on the outer surface of the pot base. The manufacturing process is complicated, the pot base body is oxidized after being subjected to bottom doubling, an oxidation protection film needs to be attached to the bottom of the pot base body in the oxidation process, the double bottom sheet is wrapped to prevent corrosion, and the oxidation protection film at the bottom needs to be removed after the oxidation is finished. The oxidation protection film is adhered to the position of the compound bottom film with glue and is not easy to tear off. In the processes of external spraying and sintering, the coating can be atomized and sprayed on the composite bottom sheet at the bottom of the pot base body, the composite bottom sheet can be yellowed through high-temperature sintering, a sand bottom process needs to be added after the whole external spraying is finished, namely, the bottom of the pot base body is sanded, redundant coating on the composite bottom sheet is removed, and the pot base material at the bottom inserting and riveting hole is exposed.
In the preparation method of the double-bottom pot, oxidation treatment is carried out firstly, then the bottom is recovered, no double-bottom sheet is arranged on the pot substrate in the oxidation process, oxidation can be directly carried out, an oxidation protection film does not need to be attached, and the oxidation protection film does not need to be torn, so that labor cost and material cost of the protection film are saved. And the outer spraying, the outer sintering and the back bottom coating are carried out firstly, the back bottom coating does not yellow due to high-temperature sintering, and the sprayed and atomized redundant coating is not generated on the back bottom coating, so that the process of the sand bottom can be omitted, the manufacturing cost of the product is saved, the sand bottom grains are not generated, and the surface of the induction cooker is prevented from being scratched when the induction cooker is used. Moreover, because the pan base material at the rivet inserting hole is provided with the oxidized oxide layer and the corrosion-resistant layer without a sand bottom, the use in a dish washing machine can be prevented from being corroded, dirt and scale are not easy to store, and the cleaning is easy. And the appearance of the bottom of the produced double-bottom pot is different from that of the related technology, and the appearance is novel and rich in aesthetic feeling.
Of course, in other embodiments, step S220 may be omitted, and in step S230: external spraying: and spraying corrosion-resistant coating on the outer surface of the pot base body so as to cover the corrosion-resistant layer on the outer surface of the pot base body.
As an example, in step S210, the surface of the aluminum sheet is coated with the lubricant and placed in a mold, and then stretch-formed by an oil press. The aluminum matrix is formed, and the processing technology is simple.
As an example, after step S210 and before step S220, a flush port is further included: removing the redundant materials at the mouth part of the formed pot base body to ensure that the pot mouth is neat and smooth. Inner surface treatment: and (3) polishing the inner surface of the pan base body to increase the roughness of the inner surface of the pan base body, so that the non-stick layer can be conveniently and stably combined in the follow-up process. And (3) outer surface treatment: the pot base body is rotated, and fine grains are formed on the outer side wall of the pot base body, so that the subsequent stable combination of the corrosion-resistant layer is facilitated. Internal spraying: and spraying non-stick paint on the inner surface of the pan base body to form a non-stick layer. Internal sintering: sintering the non-stick coating to cure the non-stick layer.
Further, in the step of inner surface treatment, the inner surface of the pan base is polished with brown corundum sand so that the roughness of the inner surface of the pan base ranges from 3 μm to 5 μm. If the roughness of the internal surface of the pot base body is too small, the non-stick layer is not favorable for stable combination, and if the roughness is too large, the smoothness of the internal surface is influenced, so that the non-stick layer is easy to collide and drop. Therefore, the roughness is between 3 and 5 μm, which is beneficial to stably combining the non-stick layer and ensures the smoothness of the inner surface of the composite-bottom pot after spraying the non-stick layer. In addition, the brown corundum sand is used for polishing, so that the polishing effect is good.
Further, in the step of treating the outer surface, fine grains are sanded on the outer side wall of the pot base body by adopting scouring pad. The sanding effect is good.
Further, the thickness of the non-stick layer is made to range from 30 μm to 40 μm. If the thickness of the non-stick layer is thin, the non-stick effect is affected, and if the thickness of the non-stick layer is thick, the thickness of the double-bottom pot is increased, the sense organ is affected, and the non-stick layer is easy to fall off. Therefore, the thickness of the non-stick layer is between 30 and 40 microns, the non-stick effect is good, the non-stick layer cannot fall off due to over-thickness, and the light and thin double-bottom pan is favorably realized.
Further, in the step of internal sintering, the sintering temperature ranges from 405 ℃ to 410 ℃, and the sintering time ranges from 3min to 5 min. If the sintering temperature is too low, the sintering time needs to be increased, the sintering is not easy to succeed, and if the sintering temperature is too high, the sintering is easy to burn out after long-time sintering. Therefore, the sintering temperature is between 405 and 410 ℃, and the sintering time is between 3 and 5 minutes, which is beneficial to ensuring the structural strength and the bonding force of the non-stick layer.
As an example, in step S220, the pot base is placed in a combined solution of sodium hydroxide and sodium gluconate for degreasing, and then a first round of water washing is performed; putting the pot base body subjected to the first round of water washing into a sulfuric acid tank for neutralization, and then carrying out second round of water washing; and putting the pot base subjected to the second round of washing into a sulfuric acid solution oxidation tank for oxidation. The oxidation treatment effect is good, and a hard oxide layer can be formed on the surface of the pot base body. In the present application, the oxidation treatment is to perform oxidation treatment on both the inner surface and the outer surface of the pot base to form a first oxide layer on the outer surface and a second oxide layer on the inner surface.
Further, the time range of degreasing was 30s to 120 s. And (6) degreasing and cleaning.
Further, the water washing was performed twice in the first round of water washing. And (5) cleaning.
Further, the concentration of the sulfuric acid in the sulfuric acid tank ranges from 100g/L to 200 g/L; the time for neutralization ranged from 30s to 60 s. Can effectively neutralize alkaline substances and avoid the alkaline substances from being brought into a subsequent oxidation tank to influence the quality of an oxidation layer.
Further, the water washing was performed twice in the second round of water washing. And (5) cleaning.
Further, the concentration of the sulfuric acid in the sulfuric acid solution oxidation tank ranges from 200g/L to 250 g/L; the temperature range of the sulfuric acid solution in the sulfuric acid solution oxidation tank is 7-9 ℃; the current density in the sulfuric acid solution oxidation tank is within the range of 2.0A/dm2To 4.0A/dm2. The oxidation effect is good, the temperature of the sulfuric acid solution is between 7 ℃ and 9 ℃, the medium-temperature oxidation is carried out, and the cost is saved.
Further, the thickness of the oxide layer is made to be in the range of 30 μm to 40 μm. If the thickness of the oxide layer is thin, the wear-resistant and corrosion-resistant effects are affected, and if the thickness of the oxide layer is thick, the metal texture of the pot matrix is affected, and the processing time is prolonged. Therefore, the thickness of the oxide layer is between 30 and 40 μm, the wear-resistant and corrosion-resistant effects are strong, the processing is convenient and fast, and the metal texture of the pot matrix is not influenced.
Further, after the step of putting the pot base after the water washing into a sulfuric acid solution oxidation tank for oxidation, the method further comprises the following steps: and (3) cleaning the oxidized pot base body by adopting water with the temperature of more than 80 ℃, and then airing or drying. Thorough cleaning, fast drying and convenient subsequent external spraying process.
As an example, in step S230, the thickness of the corrosion-resistant layer is made to range from 10 μm to 15 μm. If the thickness of the corrosion-resistant layer is thin, the corrosion-resistant effect is affected, and if the thickness of the corrosion-resistant layer is thick, the processing time is increased. Therefore, the thickness of the first corrosion-resistant layer is between 10 and 15 μm, the corrosion-resistant effect is good, and the processing is convenient and quick.
As an example, in step S240, the sintering temperature ranges from 308 ℃ to 400 ℃, and the sintering time ranges from 2min to 5 min. If the sintering temperature is too low, the sintering time needs to be increased, the sintering is not easy to succeed, and if the sintering temperature is too high, the sintering is easy to burn out after long-time sintering. Therefore, the sintering temperature is between 308 and 400 ℃, and the sintering time is between 2 and 5min, which is beneficial to ensuring the structural strength and the bonding force of the corrosion-resistant layer.
As an example, in step S250, a composite bottom plate with a plug rivet hole is embedded into the bottom of the pot base body; wherein, 4800T extrusion equipment is adopted to inlay the compound film. 4800T extrusion equipment can slowly extrude the composite bottom sheet onto the pot base, and compared with the method of beating the bottom of the pot by strong pressure by adopting 2500T secondary beating equipment, the method can effectively avoid slight deformation of the surface of the pot body and avoid damage of the oxide layer and the corrosion-resistant layer in the beating process.
As an example, after step S250, the method further includes: and (3) bottom preparation: and extruding the composite bottom sheet and the bottom of the pot base body to enable the middle of the pot base body to be inwards sunken, wherein the depth range of the sunken part is 0.3mm to 1.2 mm. Through carrying out the bulk operation, make the middle part of pot base member inwards sunken, the edge of the bottom of the pot base member of being convenient for places the platform steadily on, avoids the middle part evagination of the bottom of being heated of pot base member, and influences the stability of placing of double-bottomed pot. Further, the depth of the depression is made to range from 0.3mm to 1.2 mm. Enough margin is left for the bottom of the double-bottom pot to be heated and protrude outwards.
The method for manufacturing the double-bottom pan according to one embodiment of the present application is described in detail below.
Forming a pot base body: coating lubricating oil on the surface of an aluminum sheet, placing the aluminum sheet in a grinding tool, and performing deep drawing forming by an oil press;
opening neatly: removing redundant uneven materials at the mouth part of the formed pot base body to ensure that the pot mouth is neat and smooth;
internal sand blasting: the inner surface of the pot base body is polished by brown corundum sand, so that the roughness is increased and controlled to be 4 microns;
sanding outside: rotating the pot base body, and sanding fine grains on the outer wall part of the pot base body by using scouring pad;
medium-temperature oxidation: placing the pot base in a comprehensive solution of sodium hydroxide and sodium gluconate for degreasing for 60S, then washing with water twice, transferring to a sulfuric acid tank of 150g/L for neutralization for 45S, washing with water twice, transferring to a sulfuric acid solution oxidizing tank of 225g/L for medium-temperature oxidation, and controlling the temperature of the sulfuric acid solution to be 8 ℃; current density 3.0A/dm 2; the thickness of the oxide layer is 35 μm, and the oxide layer is finally cleaned and dried by hot pure water with the temperature of more than 80 ℃;
internal spraying: spraying sanitary non-stick paint on the inner surface, wherein the thickness of the coating film is 35 mu m;
internal sintering: sintering at 405 deg.C for 3min to solidify the coating;
external spraying: the protective coating (corrosion-resistant layer) of the dish washer is sprayed, and the thickness of the coating is 12 mu m;
external sintering: sintering for 3 minutes at 350 ℃ to cure the coating;
compounding the bottom: embedding a double-bottom steel sheet with a plug rivet hole into the outer bottom of a pot base body through 4800T extrusion equipment;
and (3) bottom preparation: the bottom of the pot base body is flat and smooth, and the center of the bottom forms a 0.7mm concave part.
Of course, in the above-described inner blasting step, the roughness may be controlled to 3 μm or 5 μm. In the medium-temperature oxidation step, degreasing for 30S or 100S, neutralizing for 30S in a 100g/L sulfuric acid tank after washing, then washing again, transferring to a 200g/L sulfuric acid solution oxidation tank for medium-temperature oxidation, and controlling the temperature of the sulfuric acid solution to be 7 ℃; current density 2.0A/dm 2; the oxide layer is 40 μm thick. The coating thickness was made 30 μm in the inner spray step and the inner sintered for 4 minutes. The coating thickness was 15 μm in the outer spray step and the outer sinter was carried out for 4 minutes. In the step of bottom finishing, the center of the bottom of the pot with the composite bottom is concave 1.2mm, and the like. The parameters can be adjusted as required, and verified that the double-bottom pot with good wear resistance, good corrosion resistance and good non-stick effect is formed, so that the service life of the double-bottom pot is ensured. Of course, the above process steps may be adjusted as needed, and are not limited to the above steps. Such as internal blasting followed by internal spraying, external sanding followed by external spraying, and the like. The technical idea of the application is met only by carrying out external spraying and external sintering before bottom compositing.
While the foregoing is directed to embodiments of the present application, and certain embodiments shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments (e.g., where different features described in different embodiments may be combined), and that such changes and modifications may be made without departing from the principles and spirit of the application, the scope of which is defined in the claims and their equivalents.
Claims (10)
1. A double-bottom pan is characterized by comprising:
a pan base (100);
a first corrosion-resistant layer (110) provided on an outer surface of the pot base (100);
and the composite bottom plate (120) is arranged on the outer surface of the first corrosion-resistant layer (110) and is positioned at the bottom of the pot base body (100).
2. The double-bottom pan as claimed in claim 1,
the composite bottom plate (120) is provided with a plurality of inserting and riveting holes (121), the composite bottom plate (120) is embedded on the outer surface of the first corrosion-resistant layer (110), and a part of the first corrosion-resistant layer (110) is exposed through the plurality of inserting and riveting holes (121).
3. The double-bottom pan as claimed in claim 2,
the plurality of plug rivet holes (121) are uniformly distributed around the center line of the pot base body (100).
4. The double-bottom pan as claimed in any one of claims 1 to 3,
the first corrosion-resistant layer (110) has a thickness in a range of 10 to 15 μm.
5. The double-bottom pan as claimed in any one of claims 1 to 3,
the first corrosion-resistant layer (110) is sprayed on the outer surface of the pan base (100).
6. The double-bottom pan as claimed in any one of claims 1 to 3,
the outer surface of the pot base body (100) comprises a sanding surface formed by sanding, and the first corrosion-resistant layer (110) is sprayed on the sanding surface.
7. The double-bottom pan as claimed in any one of claims 1 to 3,
the pot base body (100) is an aluminum base body, and the double-bottom sheet (120) is a double-bottom steel sheet.
8. The double-bottom pan as claimed in any one of claims 1 to 3,
the middle part of the bottom of the pot base body (100) is inwards sunken, and the depth range of the sunken part is 0.3mm to 1.2 mm.
9. The double-bottom pan as claimed in any one of claims 1 to 3, further comprising:
and the non-stick layer is arranged on the inner surface of the pan base body (100).
10. The double-bottom pan as claimed in claim 9,
the thickness of the non-stick layer ranges from 30 μm to 40 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121098723.1U CN214804081U (en) | 2021-05-20 | 2021-05-20 | Pot with double bottom |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121098723.1U CN214804081U (en) | 2021-05-20 | 2021-05-20 | Pot with double bottom |
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| Publication Number | Publication Date |
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| CN214804081U true CN214804081U (en) | 2021-11-23 |
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| CN202121098723.1U Active CN214804081U (en) | 2021-05-20 | 2021-05-20 | Pot with double bottom |
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| CN (1) | CN214804081U (en) |
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