Cooking vessel and production process therefor

Abstract

The present application discloses a cooking vessel and a production process therefor. The cooking vessel comprises a vessel body, an inner surface and / or an outer surface of the vessel body being provided with a structured heat transfer surface, the structured heat-transfer surface comprising a plurality of heat transfer areas, and the plurality of heat transfer areas comprising a first heat transfer area and a second heat transfer area adjacent to each other; the first heat transfer area is capable of high reflectance, and when the first heat transfer area reflects at high intensity, the second heat transfer area is capable of exhibiting lower reflectance relative to the first heat transfer area, such that the second heat transfer area forms a shadow when the first heat transfer area reflects at high intensity. The cooking vessel and the production process therefor of the present application improve heating efficiency by increasing a heat transfer area, while also improving the visual effect of the cooking vessel. This makes the cooking vessel texture more pronounced, thereby offering a unique visual feel, and promoting consumer purchase and use.

Description

A cookware and its manufacturing process Technical Field

[0001] This application relates to the technical field of cookware construction, and particularly to a cookware and its manufacturing process. Background Technology

[0002] The inner surface of existing cookware will be textured with uneven textures. The uneven textures will increase the heat exchange area, improve heating efficiency, and enhance cooking quality.

[0003] However, existing cookware often focuses on performance, neglecting the impact of visual appeal on consumer purchasing decisions. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a cookware that can both increase the heat exchange area and improve heating efficiency, and also improve the visual effect of the cookware, making the texture of the cookware more three-dimensional, providing a unique visual experience, and promoting consumer purchase and use.

[0005] This application also proposes a cookware manufacturing process applicable to the aforementioned cookware.

[0006] According to a first aspect of this application, a cookware includes a pot body, the inner surface and / or outer surface of the pot body being provided with a concave-convex heat exchange surface, the concave-convex heat exchange surface including a plurality of heat exchange zones, the plurality of heat exchange zones including an adjacent first heat exchange zone and a second heat exchange zone, the first heat exchange zone being capable of high brightness reflection, and when the first heat exchange zone is highly reflective, the second heat exchange zone is capable of low brightness reflection relative to the first heat exchange zone, so that the second heat exchange zone can form a shadow when the first heat exchange zone is highly reflective.

[0007] A cookware according to an embodiment of this application has at least the following beneficial effects:

[0008] This application creates a reflective difference between the first and second heat exchange areas, and enables the second heat exchange area to cast a shadow when the first heat exchange area is bright, approximating a three-dimensional object placed on a flat surface. Therefore, visually, the first and second heat exchange areas work together to form a concave or convex three-dimensional structure, making the visual estimate of the concave depth or convex height greater than the actual value, providing a more three-dimensional and unique visual experience, and promoting consumer purchase and use.

[0009] This application also provides a cookware manufacturing process, which has the aforementioned beneficial effects.

[0010] According to a first aspect of the present application, a cookware includes a first heat exchange zone comprising a plurality of first ribs arranged side by side, the first ribs being reflective to make the first heat exchange zone highly reflective; and a second heat exchange zone comprising a plurality of second ribs arranged side by side, the second ribs having an angle with the first ribs to make the second heat exchange zone relatively less reflective than the first heat exchange zone.

[0011] The advantages are: by setting the first rib and the second rib, the heat exchange area can be increased, the heat exchange efficiency can be improved, the cooking quality can be improved, and the first rib and the second rib are not easy to wear, thus extending the service life of the cookware.

[0012] This application can also utilize the differences in human visual perception in the horizontal and vertical directions to create the visual perception of high-brightness reflection and low-brightness reflection, thus making it easier for consumers to obtain a stereoscopic visual experience.

[0013] Meanwhile, multiple first ribs arranged side by side and multiple second ribs arranged side by side form a matrix-arranged geometric line pattern. This matrix-arranged geometric line pattern has significant advantages in many aspects, such as three-dimensionality, dynamic effect, innovation, aesthetic appeal, fault tolerance, and functionality.

[0014] At the same time, this matrix arrangement of geometric lines is more visually appealing, bringing a novel 3D effect and dynamic changes in light and shadow, and can also show unique visual layers from different angles.

[0015] Specifically, rotating the cookware can also switch the reflective effects of the first and second heat exchange zones, that is, switch from a state where the first heat exchange zone is brightly lit and the second heat exchange zone is dimly lit to a state where the first heat exchange zone is dimly lit and the second heat exchange zone is brightly lit.

[0016] According to a first aspect embodiment of the present application, the angle between the top surface and the side surface of the first rib and / or the second rib is 90±1°.

[0017] The advantage is that by making the angle between the top surface and the side surface of the rib 90°, this application also reduces the reflection of the side surface of the first or second rib, so that people's vision is focused on the reflection effect of the rib. Therefore, the visual perception along the extension direction of the rib and the visual perception perpendicular to the extension direction of the rib are very obvious, and it is easier to perceive the three-dimensional effect.

[0018] According to a first aspect embodiment of the present application, the width of the first rib and / or the second rib is 0.25±0.05mm.

[0019] The advantage is that by setting the width of the raised rib to 0.25±0.05mm, this application avoids the loss of delicate layering due to excessively thick lines and visual oppression, while also avoiding the problem of unclear patterns due to excessively thin lines. In particular, the lines may become blurry when viewed from a distance, weakening the overall visual effect.

[0020] According to a first aspect embodiment of the present application, the height of the first rib and / or the second rib is 0.1±0.02mm.

[0021] The advantage is that by setting the height of the raised rib at 0.1±0.02mm, this application can avoid the raised rib from breaking due to being too high, and also avoid the raised rib from reducing the three-dimensional effect due to being too low.

[0022] According to a first aspect embodiment of the present application, the gap between two adjacent first ribs and / or two adjacent second ribs is 0.11±0.02mm.

[0023] The advantages are: by setting the gap between the raised ribs to 0.11±0.02mm, this application avoids the pattern from being too compact and losing its three-dimensional effect due to excessively large gaps, and also avoids the pattern from appearing too dense due to small gaps, which may cause the lines to intersect and become blurred, thereby reducing clarity.

[0024] According to a first aspect of the present application, a cookware includes a plurality of heat exchange zones, including a third heat exchange zone adjacent to a first heat exchange zone and a second heat exchange zone. The first heat exchange zone has a left oblique boundary adjacent to the second heat exchange zone and a right oblique boundary adjacent to the third heat exchange zone. A vertical boundary is formed between the second heat exchange zone and the third heat exchange zone. The left oblique boundary, the right oblique boundary, and the vertical boundary intersect at a point. The outer contour of at least one of the first heat exchange zone, the second heat exchange zone, and the third heat exchange zone is a parallelogram.

[0025] The advantage is that by forming a left oblique boundary, a right oblique boundary, and a vertical boundary, the first heat exchange zone, the second heat exchange zone, and the third heat exchange zone form the edges of a cube from a three-dimensional perspective, making it easier to perceive the three-dimensional effect.

[0026] A cookware manufacturing process according to a second aspect of this application is used to produce a cookware as described in any one of the above claims, wherein the inner surface of the cookware body is provided with the concave-convex heat exchange surface, and the manufacturing process includes:

[0027] The printing process includes: printing three-dimensional patterns on the steel sheet of the cookware blank and curing them, wherein the ink thickness is controlled between 0.015-0.025mm;

[0028] The etching process includes etching the areas of the steel blank not covered by ink, followed by ink removal. The etching equipment uses a nozzle angle of 60°, a spray distance of 20±3cm, and a spray pressure of 0.9-1.1kg / cm². 2 The spray etching time is 15-18 minutes;

[0029] The pot-forming part includes stamping and stretching and sandblasting. The stamping and stretching includes stamping the billet steel sheet into a pot body blank in the shape of a pot body, and then degreasing it. The sandblasting process includes sandblasting the etched surface of the pot body blank.

[0030] The spraying process includes: spraying the pot body blank with a coating gloss of 50±10 GU.

[0031] A cookware manufacturing process according to an embodiment of this application has at least the following beneficial effects:

[0032] This application utilizes printing and etching to create three-dimensional patterns on the steel sheet of the cookware blank, forming a concave-convex heat exchange surface and a first heat exchange zone and a second heat exchange zone.

[0033] Meanwhile, the ink thickness of this application is moderate, which can resist greater etching force to meet the requirements of rib forming.

[0034] At the same time, the etching parameters of this application also make the edges of the etched ridges approximately right angles to produce the three-dimensional visual effect required for cookware.

[0035] This application utilizes a pot-forming part, which can be stamped to form the shape of a pot from sheet metal. At the same time, sandblasting makes the uneven heat exchange surface clean and rough, facilitating coating adhesion.

[0036] This application achieves a gloss level of 50±10 GU by applying a spray coating, which also improves the reflective effect of the grooves between the ribs. As a result, the planar pattern is more easily perceived as a three-dimensional structure, achieving a unique visual effect.

[0037] According to a cookware manufacturing process according to a second aspect of this application, the ink comprises: 25-35% pigment, 45-50% synthetic resin (epoxy / polyester), 0.4%-0.8% additives (defoamer, leveling agent), and 38%-45% UV monomer.

[0038] The characteristics of the ink used in printing include: viscosity of 210-235 dpa / s, solid content of 83-89%, and color density of 0.9-1.7%.

[0039] The screen size for printing is 250-350 mesh, and the curing time is 20-40 seconds.

[0040] The advantages are that by using the above-mentioned ink and specific printing parameters, this application can not only meet the need to print ink onto the blank steel sheet, but also limit the width of the lines within a reasonable range, satisfying the width requirements of the first and second ribs. At the same time, it takes into account the requirements of etching for ink adhesion, facilitates etching of the blank steel sheet, improves the forming quality of the ribs, and achieves the desired three-dimensional visual effect.

[0041] According to a cookware manufacturing process of a second aspect of this application, the sandblasting of the etched surface of the cookware blank includes: the distance from the nozzle to the sandblasting surface is 20±3cm, the nozzle forms a 60° angle with the sandblasting surface, the nozzle swings 30° for sandblasting, the spray pressure of the nozzle is 0.6±0.05MPa, and the spraying time is 20±5s.

[0042] The advantages are: by using the above-mentioned sandblasting parameters, this application can remove the residual material in the groove between the ribs, and also make the uneven heat exchange surface rougher, which facilitates coating adhesion and reduces the risk of coating peeling off.

[0043] According to a cookware manufacturing process based on a second aspect of this application, the coating of the cookware blank includes sequentially applying a base oil and a top oil.

[0044] The base oil spraying parameters are as follows: spray gun nozzle diameter 1.0-1.3mm, spray distance 25-55cm, pot body blank rotation speed 5-15r / s, and spray pressure 1.5-2.5kg / cm. 2 The base oil surface solidification temperature is 50-70℃, and the base oil thickness is 10-15μm;

[0045] The surface oil spraying parameters are as follows: spray gun nozzle diameter 1.0-1.3mm, spray distance 25-55cm, pot body blank rotation speed 3-5r / s, and spray pressure 1.5-2.5kg / cm. 2 The preheating temperature of the topcoat is 35-40℃, and the thickness of the topcoat is 20-30μm.

[0046] The advantages are: by adopting the above-mentioned spraying parameters, this application also facilitates the spraying of base oil and top oil into the raised ribs and the grooves between the raised ribs, improving the non-stick performance. At the same time, it also makes the resulting coating match the shape of the raised ribs, producing the desired three-dimensional visual effect, giving consumers a different visual experience, improving the sensory experience of cookware, and promoting consumer purchase and use.

[0047] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 is a structural schematic diagram of a cookware according to an embodiment of this application;

[0050] Figure 2 is a schematic diagram of the second three-dimensional pattern of the cookware in Figure 1;

[0051] Figure 3 is a schematic diagram of the third three-dimensional pattern of the cookware in Figure 1;

[0052] Figure 4 is a schematic diagram of the fourth three-dimensional pattern of the cookware in Figure 1;

[0053] Figure 5 is a process flow diagram of the production process of the cookware shown in Figures 1 to 4.

[0054] Reference numerals: Pot body 100; Concave-convex heat exchange surface 110; First heat exchange zone 120; Second heat exchange zone 130; First convex rib 140; Second convex rib 150; Third heat exchange zone 160; Left oblique boundary 170; Right oblique boundary 180; Vertical boundary 190. Detailed Implementation

[0055] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0056] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0057] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0058] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] The following description, in conjunction with the accompanying drawings, describes a cookware and its manufacturing process according to an embodiment of this application.

[0060] Referring to Figure 1, this application aims to provide an embodiment of a cookware. The cookware mainly includes a pot body 100, the interior of which is used to hold food to be cooked. Depending on the depth and shape of the pot body 100, the cookware can also be referred to as a pan, round pot, square pot, diamond-shaped pot, etc.

[0061] In this embodiment, the pot body 100 can be a single layer, a double layer, or a multi-layer, and the material of the pot body 100 can include iron, aluminum, and other materials that meet food safety requirements.

[0062] In some specific embodiments of this application, the cookware may include a handle connected to the pot body 100 and a lid covering the pot body 100. The handle may be a handle or a lifting handle, or may have both a handle and a lifting handle.

[0063] The inner or outer surface of the cookware can be provided with concave and convex heat exchange surfaces 110 to increase the heat exchange area of ​​the cookware, thereby improving heat transfer efficiency and cooking quality.

[0064] In this embodiment, the inner surface of the pot body 100 is provided with a concave-convex heat exchange surface 110, which is mostly located on the bottom wall of the pot body 100, so as to fully heat the food located on the bottom wall of the pot body 100 and facilitate heating from bottom to top.

[0065] In some specific embodiments of this application, the concave and convex heat exchange surfaces 110 can be simultaneously distributed on the side wall of the pot body 100 to heat the food from the side, so as to achieve uniform heating.

[0066] In this embodiment, the uneven heat exchange surface 110 includes multiple heat exchange zones, including an adjacent first heat exchange zone 120 and a second heat exchange zone 130. The first heat exchange zone 120 is highly reflective. When the first heat exchange zone 120 is highly reflective, the second heat exchange zone 130 is relatively less reflective than the first heat exchange zone 120, so that the second heat exchange zone 130 can form a shadow when the first heat exchange zone 120 is highly reflective.

[0067] In summary, this application creates a reflective difference between the first heat exchange zone 120 and the second heat exchange zone 130, and enables the second heat exchange zone 130 to form a shadow when the first heat exchange zone 120 is bright, approximating the placement of a three-dimensional object on a flat surface. Therefore, visually, the first heat exchange zone 120 and the second heat exchange zone 130 cooperate to form a concave or convex three-dimensional structure, making the visual estimate of the concave depth or convex height greater than the actual value, providing a more three-dimensional and unique visual experience, and promoting consumer purchase and use.

[0068] Therefore, this embodiment can not only increase the heat exchange area and improve the heating efficiency, but also improve the visual effect of the cookware, making the texture of the cookware more three-dimensional, providing a unique visual experience, and promoting consumer purchase and use.

[0069] In some specific embodiments of this application, the first heat exchange zone 120 may include a plurality of first ribs 140 arranged side by side, the first ribs 140 being reflective to make the first heat exchange zone 120 highly reflective, and the second heat exchange zone 130 may include a plurality of second ribs 150 arranged side by side, the second ribs 150 having an angle with the first ribs 140, so that the second heat exchange zone 130 is relatively less reflective than the first heat exchange zone 120.

[0070] It is easy to understand that, in this embodiment, by setting the first rib 140 and the second rib 150, the first rib 140 and the second rib 150 can increase the heat exchange area, improve the heat exchange efficiency, and improve the cooking quality. Furthermore, the first rib 140 and the second rib 150 are not easily worn, thus extending the service life of the cookware.

[0071] This application can also utilize the differences in human visual perception in the horizontal and vertical directions to create the visual perception of high-brightness reflection and low-brightness reflection, thus making it easier for consumers to obtain a stereoscopic visual experience.

[0072] Meanwhile, multiple first ribs 140 arranged side by side and multiple second ribs 150 arranged side by side form a matrix-arranged geometric line pattern. This matrix-arranged geometric line pattern has significant advantages in many aspects such as three-dimensionality, dynamic effect, innovation, aesthetic appeal, fault tolerance, and functionality.

[0073] At the same time, this matrix arrangement of geometric lines is more visually appealing, bringing a novel 3D effect and dynamic changes in light and shadow, and can also show unique visual layers from different angles.

[0074] Specifically, rotating the cookware can also switch the reflective effect of the first heat exchange zone 120 and the second heat exchange zone 130. That is, it can switch from the state where the first heat exchange zone 120 is brightly lit and the second heat exchange zone 130 is dimly lit to the state where the first heat exchange zone 120 is dimly lit and the second heat exchange zone 130 is brightly lit.

[0075] Referring to FIG2, in some specific embodiments of this application, the first heat exchange zone 120 and the second heat exchange zone 130 can be parallel strips, and the first rib 140 of the first heat exchange zone 120 and the second rib 150 of the second heat exchange zone 130 have an included angle, which can be an acute angle, a right angle, or an obtuse angle, and are arranged in an array to produce a three-dimensional shape of a stepped structure.

[0076] Referring to FIG3, in some specific embodiments of this application, one of the first heat exchange zone 120 and the second heat exchange zone 130 may be annular, and the other of the first heat exchange zone 120 and the second heat exchange zone 130 may be located inside the annular structure to form a three-dimensional shape of a boss structure.

[0077] Referring to FIG4, in some specific embodiments of this application, one of the first heat exchange zone 120 and the second heat exchange zone 130 can be triangular, the second heat exchange zone 130 and the third heat exchange zone 160 are arranged adjacent to each other, and the edge contours of the second heat exchange zone 130 and the third heat exchange zone 160 near the first heat exchange zone 120 correspond to the two sides of the first heat exchange zone 120 to form a three-dimensional shape of a triangular pyramid structure.

[0078] Referring to FIG1, in some specific embodiments of this application, multiple heat exchange zones may include a third heat exchange zone 160 adjacent to the first heat exchange zone 120 and the second heat exchange zone 130. The first heat exchange zone 120 has a left oblique boundary 170 adjacent to the second heat exchange zone 130 and a right oblique boundary 180 adjacent to the third heat exchange zone 160. A vertical boundary 190 is formed between the second heat exchange zone 130 and the third heat exchange zone 160. The left oblique boundary 170, the right oblique boundary 180 and the vertical boundary 190 intersect at a point. The outer contour of at least one of the first heat exchange zone 120, the second heat exchange zone 130 and the third heat exchange zone 160 is a parallelogram.

[0079] It is easy to understand that by forming a left oblique boundary 170, a right oblique boundary 180, and a vertical boundary 190, the first heat exchange zone 120, the second heat exchange zone 130, and the third heat exchange zone 160 form the corners of a cube from a three-dimensional perspective, making it easier to perceive the three-dimensional effect.

[0080] Stereoscopic perspective is a concept in mechanical drawing. Mechanical drawings typically include front view, top view, left view, right view, and bottom view. The front view, top view, left view, right view, and bottom view are all projections of the product in a certain direction. They can only show the planar structure of the product and cannot confirm the structural dimensions of the product in the direction perpendicular to the view. For example, in the front view of a rectangular pattern, only the height, length, and width of the product can be obtained. The other one, the length and width, cannot be confirmed. Therefore, it cannot be determined whether the product is a cube or a flat plate.

[0081] A stereoscopic view is a projection obtained from the product at an angle. It can usually show the top surface and two sides of the product. Therefore, it is also possible to determine whether the product is flat or three-dimensional based on the proportional relationship of the sides.

[0082] Therefore, when the first heat exchange zone 120, the second heat exchange zone 130 and the third heat exchange zone 160 form the three-dimensional perspective of a cube, the human eye will perceive the pattern on the pot body 100 as a three-dimensional shape, creating a visual impact and producing a better visual effect, thus achieving the design purpose.

[0083] It should be noted that the left oblique boundary 170, the right oblique boundary 180 and the vertical boundary 190 can be formed by solid ribs or by the gap between the first convex rib 140 and the second convex rib 150, as long as the boundaries of the heat exchange zone can be clearly distinguished.

[0084] In this example, the left diagonal boundary 170, the right diagonal boundary 180, and the vertical boundary 190 are marked with dashed lines, but this does not indicate that the left diagonal boundary 170, the right diagonal boundary 180, and the vertical boundary 190 are solid entities.

[0085] In some specific embodiments of this application, the left oblique boundary 170, the right oblique boundary 180, and the vertical boundary 190 can be straight lines to reduce manufacturing difficulty.

[0086] In some specific embodiments of this application, the left oblique boundary 170, the right oblique boundary 180, and the vertical boundary 190 can be corrugated to meet diverse needs.

[0087] In some specific embodiments of this application, the boundaries between heat exchange zones can be connected by obtuse or acute angles to avoid right angles commonly found in planar graphics and ensure that the pattern has a three-dimensional effect.

[0088] In some specific embodiments of this application, the angle between the top surface and the side surface of the first rib 140 and / or the second rib 150 can be 90±1°.

[0089] It is easy to understand that by making the angle between the top surface and the side surface of the rib 90°, this embodiment also reduces the reflection of the side surface of the first rib 140 or the second rib 150, so that people's vision is focused on the reflection effect of the rib. Therefore, the visual perception along the extension direction of the rib and the visual perception perpendicular to the extension direction of the rib are very obvious, and it is easier to perceive the three-dimensional effect.

[0090] In this embodiment, the first rib 140 and the second rib 150 are formed by the same process, and therefore, the first rib 140 and the second rib 150 have the same shape parameters.

[0091] In some specific embodiments of this application, the width of the first rib 140 and / or the second rib 150 may be 0.25±0.05mm.

[0092] It is easy to understand that by setting the width of the raised rib to 0.25±0.05mm in this embodiment, it avoids the loss of delicate layering due to excessively thick lines and visual oppression, while also avoiding the pattern becoming unclear due to excessively thin lines. In particular, the lines may become blurry when viewed from a distance, weakening the overall visual effect.

[0093] In some specific embodiments of this application, the height of the first rib 140 and / or the second rib 150 can be 0.1±0.02mm.

[0094] It is easy to understand that by setting the height of the raised rib to 0.1±0.02mm in this embodiment, it is possible to avoid the raised rib from breaking due to being too high, and to avoid the raised rib from reducing the three-dimensional effect due to being too low.

[0095] In some specific embodiments of this application, the gap between two adjacent first ribs 140 and / or two adjacent second ribs 150 can be 0.11±0.02mm.

[0096] It is easy to understand that in this embodiment, by setting the gap between the raised ribs to 0.11±0.02mm, on the one hand, the gap is too large, which would result in the pattern not being compact enough and losing the three-dimensional effect; on the other hand, the gap is too small, which would make the pattern appear too dense and may cause the lines to intersect and become blurred, thereby reducing the clarity.

[0097] Referring to Figure 5, this application also aims to provide an embodiment of a cookware manufacturing process for producing a cookware according to any of the above. The inner surface of the pot body 100 is provided with a concave-convex heat exchange surface 110. The manufacturing process mainly includes a printing part, an etching part, a pot-forming part, a spraying part, and an assembly part.

[0098] The printing section is used to print ink onto the blank steel sheet of the cookware, while the etching section is used to etch the parts of the blank steel sheet that are not covered by ink. The forming section is used to stamp the blank steel sheet into the shape of the cookware. The spraying section is used to spray a non-stick coating onto the pot body 100 to meet the non-stick function requirements. The assembly section is used to assemble the pot body 100 with accessories to form the finished cookware.

[0099] For the printing section S100, the printing section S100 mainly includes the following steps:

[0100] In the billet preparation step S101, a billet steel sheet is prepared for forming the pot body 100.

[0101] In some specific embodiments of this application, a single-layer or multi-layer stainless steel composite planar blank can be selected. The single layer is made of 304 or 316 stainless steel, the multi-layer inner layer is made of 304 stainless steel, the middle layer is made of aluminum alloy, and the outer or bottom layer is made of 430 stainless steel composite.

[0102] S102, billet cleaning step, cleans the billet steel sheet.

[0103] Specifically, the billet steel sheet is placed into the cleaning line for cleaning. At the same time, ferric chloride is added to the cleaning line. The acidity of ferric chloride is 1.3-1.35 and the specific gravity of ferric chloride is 1.15-1.32 (SG).

[0104] Therefore, ferric chloride slightly corrodes the surface of the blank, with a depth of 0.01-0.015μm, which can increase the adhesion of ink to the blank surface.

[0105] At the same time, the cleaning line can also remove the oxide layer, oil stains, foreign matter, etc. from the surface of the billet.

[0106] After cleaning, the etching density on the surface of the blank should reach 300-400 mesh.

[0107] At the end of the cleaning process, ferric chloride should also be cleaned and removed from the surface of the billet, and the water stains on the surface of the billet should be dried by heating.

[0108] Ink preparation step S103: Prepare ink and adjust the ink to the required state.

[0109] Specifically, the ink should be formulated in the following proportions: 25-35% pigment, 45-50% synthetic resin (epoxy / polyester), 0.4%-0.8% additives (defoamer, leveling agent), and 38%-45% UV monomer.

[0110] When preparing the formula, volume ratio should be used first. If solid components are present, the formula can be converted to weight before preparation.

[0111] After preparation, the inks suitable for printing should meet the following standards: the viscosity of UV inks is 210-235 dpa / s, the solid content of UV inks is 83-89%, and the color density of UV inks is 0.9-1.7%.

[0112] This application preferentially uses UV ink, but other types of ink can also be used as long as they can achieve the same characteristics and effects or meet the requirements for etching.

[0113] In ink printing step S104, a three-dimensional pattern is printed on the surface of the blank steel sheet and cured, that is, a three-dimensional pattern is printed on the blank steel sheet of the cookware and cured, wherein the ink thickness is controlled between 0.015-0.025mm.

[0114] Specifically, a layer of UV ink with a predetermined pattern is screen-printed on the surface of the billet steel sheet. Areas without patterns are not covered. The UV ink is then cured using ultraviolet light.

[0115] The screen printing stencil is 250-350 mesh, and the UV ink curing time is 20-40 seconds.

[0116] It is easy to understand that by using the above-mentioned ink and specific printing parameters, this embodiment can not only meet the need to print ink onto the blank steel sheet, but also limit the width of the lines within a reasonable range to meet the width requirements of the first rib 140 and the second rib 150. At the same time, it takes into account the requirements of etching for ink adhesion, facilitates etching of the blank steel sheet, improves the forming quality of the ribs, and achieves the desired three-dimensional visual effect.

[0117] For the etched portion S200, the etched portion S200 mainly includes the following steps:

[0118] Etching liquid preparation step S201: Prepare etching liquid and adjust the etching liquid to the required state.

[0119] The etching liquid used in the etching equipment has the following components:

[0120] Ferric chloride composition: Ferric chloride: 39-42%; Free acid: 0.35-0.45%; Ferric divalent: 0.09-0.15%; Density: 1.35-1.49.

[0121] Hydrochloric acid specific gravity: upper limit: 4.5; lower limit: 0.7; target value: 2.67-2.71 m / L.

[0122] Sodium chlorate specific gravity: upper limit: 999; lower limit: 400; target value: 615-630 (MV).

[0123] The specific gravity of the etching liquid formed by mixing the above components is as follows: upper limit: 1.5; lower limit: 1.26; target value: 1.196-1.266 (SG).

[0124] The requirements for etching chemical raw materials are: 31% industrial synthetic hydrochloric acid, 99% sodium hydroxide, 42% ferric chloride, 99.5% sodium chlorate, with a specific gravity of 0.9-1.8 g / ml, and a chemical reaction temperature of 45-55 degrees Celsius.

[0125] In etching step S202, the billet steel sheet is placed into the etching equipment. The nozzle angle of the etching equipment is 60°, the spray distance is 20±3cm, and the spray pressure is 0.9-1.1kg / cm. 2 The spray etching time is 15-18 minutes.

[0126] In terms of etching effect, the etching depth of the blank is 0.07-0.12mm.

[0127] In ink cleaning step S203, the ink on the blank steel sheet is cleaned and then air-dried.

[0128] The cleaning solution is 5% sodium hydroxide, the nozzle angle is 60 degrees, the spray distance is 20cm, the spray pressure is 1.5kg / cm2, and the spray cleaning time is 8 minutes.

[0129] The cleaned steel billets are dried using a conveyor-type electric air dryer with a transmission speed of 0.9-1.45 meters per minute.

[0130] For the pot-forming section S300, the pot-forming section S300 includes stamping and stretching and sandblasting. Stamping and stretching includes stamping the billet steel sheet into a pot body blank in the shape of the pot body 100, and then degreasing. Sandblasting includes sandblasting the etched surface of the pot body blank, specifically including the following steps:

[0131] In the oiling step S301, the billet steel sheet is immersed in the mixture.

[0132] The blend is formed by mixing stretching oil and white mineral oil in a 1:3 ratio.

[0133] In the pot body stretching step S302, stretching oil is sprayed or coated on the billet steel sheet, and then the billet steel sheet is stretched to form a pot body blank. The periphery of the pot body blank is bent upward to form a cooking space.

[0134] When spraying stretching oil onto the surface of the pot body blank, the pressure of the spraying stretching oil is 1.5-2 kg / cm². 2 The stretching oil needs to be sprayed evenly onto the surface of the billet steel sheet and into the bottom gaps of the etched pattern.

[0135] Step S303, edge trimming and rounding, involves cutting and rounding the edges of the pot body blank.

[0136] Specifically, the edges of the pot body 100 are flashed to form the standard outer diameter of the pot body 100.

[0137] Specifically, the edges of the pot body 100 are initially deburred and rounded, with the burr being cut into the edge of the pot body 100 by 2.5-3mm to make the edge of the pot round.

[0138] Specifically, the burrs on the edge of the pot body 100 are rounded to form a smooth arc-shaped cut.

[0139] For the spray painting section S400, the spray painting section S400 mainly includes the following steps:

[0140] Degreasing step S401: High-temperature sintering removes oil stains.

[0141] Specifically, the temperature is set according to the thickness of the pot body 100. When the thickness of the pot body 100 is less than 2.2mm, the sintering temperature is set to 340±10℃. When the thickness of the pot body 100 is 2.2-2.5mm, the temperature is set to 350±10℃. And so on, for every 0.3mm increase in pot thickness, the high-temperature sintering temperature of the pot body 100 increases by 10℃. The maximum oil removal sintering temperature of the pot body 100 should not exceed 450℃.

[0142] Meanwhile, the rotation speed of the high-temperature furnace is about 1.5-2 meters per minute, which can be finely adjusted according to the constant temperature length of the high-temperature zone.

[0143] Sandblasting step S402 involves sandblasting the surface of the cleaned pot body blank.

[0144] Specifically, gas is used to drive sand particles to impact the surface of the pot blank. At the same time, a high-pressure air gun is used to clean the residue at the bottom of the embossed pattern, so that the surface is clean and free of foreign objects.

[0145] During the sandblasting process, set or execute the following parameters: the distance from the spray gun nozzle to the product surface is 20±3cm, the spray gun nozzle forms a 60-degree angle with the product, the spray gun nozzle swings 30 degrees for sandblasting, and the air compressor pressure gauge (spray pressure) is 0.6±0.05MPa; the spraying time is 20±5 seconds.

[0146] By using the above-mentioned sandblasting parameters, this application can remove the residual material in the groove between the ribs, and also make the uneven heat exchange surface 110 rougher, which facilitates coating adhesion and reduces the risk of coating peeling off.

[0147] Step S403 involves spraying the primer after preheating. The preheating temperature of the primer is 40-45℃.

[0148] The primer coating has the following characteristics: viscosity: 9-13 seconds; non-volatile content: 45-50%; coverage area: 4.5-5 m² / kg; surface solidification temperature: 50-70℃; and thickness: 10-15 μm.

[0149] When applying the primer, the spray gun nozzle diameter should be 1.0-1.3mm, the spray distance 25-55cm, the pot blank rotation speed 3-5r / s, and the spray pressure 1.5-2.5kg / cm. 2 .

[0150] Step S404: Apply topcoat after preheating. The preheating temperature of the topcoat is 35-40℃. The gloss of the coating after applying the primer and topcoat is 50±10 GU.

[0151] The viscosity of the topcoat is 14-16 seconds; the non-volatile content of the topcoat is 30-35%; the coating area of ​​the topcoat is 25-30 m² / kg; and the thickness of the topcoat is 20-30 μm.

[0152] After the topcoat is applied, the base coat and topcoat are cured uniformly at a temperature of 200-300℃.

[0153] It is easy to understand that by adopting the above-mentioned spraying parameters, this embodiment can also facilitate the spraying of base oil and top oil into the raised ribs and the grooves between the raised ribs, thereby improving the non-stick performance. At the same time, it also makes the resulting coating match the shape of the raised ribs, creating the desired three-dimensional visual effect, giving consumers a different visual experience, improving the sensory experience of cookware, and promoting consumer purchase and use.

[0154] Step S405 involves spraying the outer surface of the pot body blank to form the pot body 100, preventing scratches and blackening during use, and increasing its appearance.

[0155] The drying temperature for the outer coating is 150-200℃, and the drying time is 5-10 minutes.

[0156] For assembly section S500, the assembly section S500 mainly includes the following steps:

[0157] Polishing step S501: Polish and clean the surface of the pot body 100 to make the pot body 100 locally glossy.

[0158] Assembly step S502: Assemble the pot body 100 with the accessories to form a cookware, and clean and dry the cookware.

[0159] In summary, by applying the printing and etching parts, this application can create a three-dimensional pattern on the blank steel sheet of the cookware to form a concave-convex heat exchange surface 110, and to form a first heat exchange zone 120 and a second heat exchange zone 130.

[0160] Meanwhile, the ink thickness of this application is moderate, which can resist greater etching force to meet the requirements of rib forming.

[0161] At the same time, the etching parameters of this application also make the edges of the etched ridges approximately right angles to produce the three-dimensional visual effect required for cookware.

[0162] This application utilizes a pot-forming part, which can be stamped to form the shape of a pot from sheet metal. At the same time, sandblasting makes the uneven heat exchange surface 110 clean and rough, facilitating coating adhesion.

[0163] This application achieves a gloss level of 50±10 GU by applying a spray coating, which also improves the reflective effect of the grooves between the ribs. As a result, the planar pattern is more easily perceived as a three-dimensional structure, achieving a unique visual effect.

[0164] In the description of this specification, the references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0165] The terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0166] It should also be noted that, in the description of this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0167] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0168] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0169] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A cookware, characterized in that, The cookware includes a pot body (100), and the inner and / or outer surfaces of the pot body (100) are provided with concave and convex heat exchange surfaces (110). The concave and convex heat exchange surfaces (110) include multiple heat exchange zones, and the multiple heat exchange zones include adjacent first heat exchange zones (120) and second heat exchange zones (130). The first heat exchange zone (120) is capable of high brightness reflection. When the first heat exchange zone (120) is highly reflective, the second heat exchange zone (130) is capable of low brightness reflection relative to the first heat exchange zone (120), so that the second heat exchange zone (130) can form the shadow when the first heat exchange zone (120) is highly reflective.

2. The cookware according to claim 1, characterized in that, The first heat exchange zone (120) includes a plurality of first ribs (140) arranged side by side. The first ribs (140) are reflective so that the first heat exchange zone (120) is highly reflective. The second heat exchange zone (130) includes a plurality of second ribs (150) arranged side by side. The second ribs (150) are at an angle to the first ribs (140) so that the second heat exchange zone (130) is relatively less reflective than the first heat exchange zone (120).

3. A cookware according to claim 2, characterized in that, The angle between the top surface and the side surface of the first rib (140) and / or the second rib (150) is 90±1°.

4. A cookware according to claim 2, characterized in that, The width of the first rib (140) and / or the second rib (150) is 0.25±0.05mm.

5. A cookware according to claim 2, characterized in that, The height of the first rib (140) and / or the second rib (150) is 0.1±0.02mm, and the gap between two adjacent first ribs (140) and / or two adjacent second ribs (150) is 0.11±0.02mm.

6. A cookware according to claim 1, characterized in that, The plurality of heat exchange zones include a third heat exchange zone (160) adjacent to the first heat exchange zone (120) and the second heat exchange zone (130). The first heat exchange zone (120) has a left oblique boundary (170) adjacent to the second heat exchange zone (130) and a right oblique boundary (180) adjacent to the third heat exchange zone (160). A vertical boundary (190) is formed between the second heat exchange zone (130) and the third heat exchange zone (160). The left oblique boundary (170), the right oblique boundary (180) and the vertical boundary (190) intersect at a point. The outer contour of at least one of the first heat exchange zone (120), the second heat exchange zone (130) and the third heat exchange zone (160) is a parallelogram.

7. A cookware manufacturing process, characterized in that, For producing a cookware according to any one of claims 1 to 6, wherein the inner surface of the cookware body (100) is provided with the concave-convex heat exchange surface (110), and the production process includes: The printing process includes: printing three-dimensional patterns on the steel sheet of the cookware blank and curing them, wherein the ink thickness is controlled between 0.015-0.025mm; The etching process includes etching the areas of the steel blank not covered by ink, followed by ink removal. The etching equipment uses a nozzle angle of 60°, a spray distance of 20±3cm, and a spray pressure of 0.9-1.1kg / cm². 2 The spray etching time is 15-18 minutes; The pot-forming part includes stamping and stretching and sandblasting. The stamping and stretching includes stamping the billet steel sheet into a pot body (100) shape, and then degreasing it. The sandblasting includes sandblasting the etched surface of the pot body (100) blank. The spraying part includes: spraying the pot body (100) blank with a coating gloss of 50±10GU.

8. The cookware manufacturing process according to claim 7, characterized in that, The ink comprises: 25-35% pigment, 45-50% synthetic resin (epoxy / polyester), 0.4%-0.8% additives (defoamer, leveling agent), and 38%-45% UV monomer. The characteristics of the ink used in printing include: viscosity of 210-235 dpa / s, solid content of 83-89%, and color density of 0.9-1.7%. The screen size for printing is 250-350 mesh, and the curing time is 20-40 seconds.

9. A cookware manufacturing process according to claim 7, characterized in that, The process of sandblasting the etched surface of the pot body (100) blank includes: the distance from the nozzle to the sandblasting surface is 20±3cm, the nozzle forms a 60° angle with the sandblasting surface, the nozzle swings 30° for sandblasting, the spray pressure of the nozzle is 0.6±0.05MPa, and the spraying time of the nozzle is 20±5s.

10. A cookware manufacturing process according to claim 7, characterized in that, The coating of the pot body (100) blank includes a base oil coating and a top oil coating performed sequentially. The base oil spraying parameters are as follows: spray gun nozzle diameter 1.0-1.3mm, spray distance 25-55cm, pot body (100) blank rotation speed 5-15r / s, and spray pressure 1.5-2.5kg / cm. 2 The base oil surface solidification temperature is 50-70℃, and the base oil thickness is 10-15μm; The surface oil spraying parameters are as follows: spray gun nozzle diameter 1.0-1.3mm, spray distance 25-55cm, pot body (100) blank rotation speed 3-5r / s, and spray pressure 1.5-2.5kg / cm. 2 The preheating temperature of the topcoat is 35-40℃, and the thickness of the topcoat is 20-30μm.

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