WO2007085132A1

WO2007085132A1 - Cookware with copper composite plate and manufature method thereof

Info

Publication number: WO2007085132A1
Application number: PCT/CN2006/000312
Authority: WO
Inventors: Zhiming Hu
Original assignee: Zhiming Hu
Priority date: 2006-01-27
Filing date: 2006-03-03
Publication date: 2007-08-02
Also published as: CN100522024C; CN101006902A

Abstract

A cookware with copper composite plate, the body of the cookware is made of a 4-ply copper composite plate, and the bottom of the cookware is made of a 3-ply metal composite plate wherein outer layer is stainless steel. The method of manufacturing the cookware is that: first, the copper composite plate comprising a T2 copper layer, a 409 or 430 stainless steel layer, a 1050 pure aluminum layer, and a 304 stainless steel layer is selected, after the copper composite plate is formed by stretching, the T2 copper layer which is the outer layer of the bottom of the cookware is removed, thereby the exposed stainless steel layer can be directly contacted with an induction cooker. Then the organosilicon copper protectant is sprayed on the T2 copper layer which is the outer layer of the cookware.

Description

Copper composite board cookware and manufacturing method thereof

The invention relates to a cookware, in particular to a copper composite plate cookware with a copper layer and a manufacturing method thereof.

Background technique

At present, the cookware of copper composite plates on the domestic and international markets cannot use induction cookers, and can only be used in other stoves. The reason is that the outer layer T2 copper is a weak magnetic metal, and the induction cooker can not generate magnetic induction, but can not generate heat, and other stoves have more It is an open flame and infrared radiation directly radiated to the cookware to generate heat for cooking. The original cookware has a beautiful and beautiful copper color. It is used on these stoves to make the copper color dull, discolored, and even rusted. If the bottom of the cookware can be changed so that it can be used on the induction cooker, it can maintain its brilliant copper color and can cook food at will, which is a key technical problem that needs to be solved.

The Chinese patent "Guangzhou Lingfeng Kitchenware Co., Ltd." with application number 00240125.8 discloses a stainless steel pot with a composite bottom. The utility model comprises a pot body and a composite pot bottom, characterized in that the composite pot bottom comprises a plurality of layers of stainless steel plates, aluminum plates and stainless iron plates. The utility model uses a composite pot bottom structure composed of a stainless steel plate, an aluminum plate and a stainless iron plate, so that it has the functions of heat-hooking, heating and heat-dissipating area, not easy to burn food and sticking the pan, and ensuring cooking thereof. The effect is good, and can be directly used on the induction cooker, and the utility model has the advantages of simple structure, easy production and production, long service life and strong practicability.

The above-mentioned stainless steel pot having a composite pan bottom can be used on an electromagnetic cooker, but the stainless steel plate layer, the aluminum plate layer and the stainless iron plate layer at the bottom of the composite pan are welded together by a brazing machine. The composite structure is not a composite metal composed of press-bonding, so the use is unreliable, and the composite layer is often detached when fired at a high temperature. Moreover, the technical method of the composite bottom can only be used for the stainless steel pot body, and it is currently not applicable to the composite plate body with the outer layer of T2 copper.

The Chinese patent “Xingxian Eurasia Stainless Steel Products Co., Ltd.” with application number 200510035049.1 discloses a stainless steel pot with a brazed composite pot bottom and a manufacturing method thereof, and the composite pot bottom comprises an aluminum plate laminated in sequence and compounded with the bottom of the pot. A stainless steel plate and a copper plate. Firstly, the copper plate is brazed to the stainless steel plate as a transition layer, and then the aluminum plate is laminated and heated together with the bottom of the pan, and the stainless steel-aluminum composite plate of the copper plate can be turned to the pot body, and the bottom of the pan is fully wrapped. The composite pan has good heat conduction, high temperature resistance, strong bonding force, good anti-dry burning effect and low cost, and is suitable for compound strengthening and anti-dry burning treatment of the stainless steel bottom. Although the above-described brazed composite pan bottom stainless steel pot is reinforced with its manufacturing method, the dry burning resistance is improved, but the bonding strength is not as high as that of the laminated metal composite plate. Since the bottom outer layer is copper, it cannot be used on an induction cooktop, and the manufacturing method of the composite pan bottom can only be used for a stainless steel pot body which cannot be applied to a composite plate body whose outer layer is T2 copper.

The Chinese patent application No. 93102193.6, Northwest Nonferrous Metals Research Institute, discloses a bimetallic composite material pot including aluminum-iron, aluminum-stainless steel, copper-iron, copper-stainless steel bimetal composite pot. The composite plate is made by explosive welding compounding and rolling technology, and the pan is made by pressing and pressing. The bimetal composite material pot has the advantages of light weight and durability, time saving and energy saving, and avoids the disadvantages of the iron pan being vulnerable to rust and bulkiness, and has the advantages of non-stickiness and novel structure, which is beneficial to the health of the human body and mind. A new cookware that meets the needs of people's daily lives.

The above-mentioned bimetallic composite material pot is made of iron or stainless steel inside, and is made of copper or aluminum plate on the outside, and can only be used on ordinary stoves and cannot be used on an induction cooker.

The present invention has been made in view of the above deficiencies of the prior art.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and to provide a copper composite panel cookware and a manufacturing method thereof, which can be used both on an induction cooker and maintain a gorgeous luster of copper color.

In order to solve the above technical problem, the basic idea of the technical solution of the present invention is: A copper composite panel cooker comprising a cookware body composed of a copper composite plate, wherein: the cooker body 1 has an outer layer A four-layer copper composite plate of T2 copper, the bottom 2 of the cookware body is a three-layer metal composite plate whose outer layer is stainless steel.

The structure of the four-layer copper composite board of the body 1 is from the outer layer to the inner layer, which is T2 layer 3, 409 or 430 layer 4, 1050 layer 5, 304 layer 6, wherein

T2 is the grade of pure copper plate.

409 is the grade of stainless steel plate, namely OCrllTi,

430 is the grade of stainless steel plate, ie lCrl7,

1050 is the grade of pure aluminum plate,

304 is the grade of stainless steel plate, ie 0Crl8Ti9.

The structure of the three-layer metal composite panel of the bottom 2 of the cookware is 409 or 430 layers 4, 1050 layers 5, 304 layers 6, and the 409 or 430 stainless steel layer 4 is directly in contact with the electromagnetic cooker.

The 409 or 430 stainless steel plate on the bottom outer layer of the cookware is provided with a pattern-like recess 7 recessed inwardly, the concave The groove 7 has a press-fitted T2 pure copper plate 7' between the patterned grooves 7 which is the plane of the 409 or 430 stainless steel plate layer 4 which is in contact with the induction cooktop.

The manufacturing method of the copper composite board cooker comprises the following steps:

First, the material is first selected, and a four-layer copper composite board is selected, and the layers of the structure are T2 layer, 409 or 430 layers, 1050 layers, and 304 layers;

Secondly, in the stretch forming, the T2 pure copper plate layer 3 is on the outer layer, and the 304 stainless steel plate layer 6 is on the inner layer to form the cookware body 1 of the cookware body and the cookware bottom 2 which is integral with the cooker body;

Thirdly, the T2 pure copper plate layer 3 of the outer layer of the copper composite plate of the cookware body of the formed cookware body is removed by a machining method or a polishing machine to be brought into contact with the 409 or 430 stainless steel plate layer 4 Exposed and sanded to form the outer layer of the bottom 2 of the composite panel, forming a plane of a stainless steel layer that can directly contact the electromagnetic cooker, or

The bottom 2 of the cookware body of the formed cookware body is first stamped into a pattern-like recess 7 having an inwardly recessed recess, the recess 7 being recessed into the 409 or 430 stainless steel sheet layer 4, while the recess 7 has a pressed T2 pure The copper plate V is then machined by a machining method or a T2 pure copper plate on the outer surface of the bottom 2 of the cookware, and the T2 pure copper plate 7' in the groove 7 is retained. Exposing the 409 or 430 stainless steel sheet 4 and sanding it to form a plane of a stainless steel layer that can be in direct contact with the induction cooktop;

Fourthly, the silicone copper protective agent is sprayed on the remaining outer layer T2 pure copper plate of the copper composite plate cooker to make the surface of the cookware have a certain hardness and maintain a bright luster.

After spraying the silicone copper protective agent on the remaining outer layer T2 pure copper plate of the cookware, the copper protective agent is sintered and cured at a sintering temperature of 60-100 ° C. After curing, the copper protective agent is covered on the surface of the T2 copper and is in the cookware. A protective film is formed on the surface.

The thickness of the protective film covering the surface of the T2 copper is 10 to 12 μm, and the hardness of the protective film is 2H.

The temperature at which the copper protective agent is sintered and cured is preferably 80 °C.

After adopting the above technical solution, the present invention has the following beneficial effects as compared with the prior art.

Since the copper composite plate cooker of the present invention is a cookware body composed of a copper composite plate, the cookware body has a four-layer copper composite plate whose outer layer is a T2 pure copper plate, and the bottom of the cookware body has a stainless steel outer layer. Three-layer metal composite board. The cookware of this structure is a four-layer copper composite plate which is T2 pure copper plate, stainless steel plate, pure aluminum plate and stainless steel plate from the outside to the inside. After stretching, the machine is used to remove the bottom of the cookware. a layer of T2 pure copper plate, such that the stainless steel plate layer in contact with it is exposed to form a three-layer metal composite plate, and the cookware has After the outer layer of the T2 pure copper plate is sprayed with the protective agent, the protective film formed has a certain hardness and a bright luster. Therefore, the present invention has the following advantages:

1) Since the bottom of the copper composite plate cooker of the present invention has good magnetic properties at the bottom of the 409 or 430 stainless steel plate, the exposed flat surface can directly contact the electromagnetic cooker to generate magnetic induction, generating heat for cooking.

2) Since the bottom 409 or 430 stainless steel plate of the copper composite plate cooker of the present invention is an integral composite material with the pot body, the phenomenon of delamination and bottoming in use is completely eliminated, and the use is reliable.

3) Due to the appearance of the copper composite panel cookware of the present invention, especially the outer layer of the cookware body, the pure copper plate can maintain the gorgeous luster of the copper color.

4) The present invention also maintains the functions used on a variety of stoves.

The specific embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

DRAWINGS

1 is a structural view of a copper composite plate cooker of the present invention after stretch forming;

2 is a structural view of the bottom of the copper composite plate cooker of the present invention with the Τ2 layer removed;

Fig. 3 is a structural view showing a pattern-like groove at the bottom of the copper composite plate cooker of the present invention and removing the Τ2 layer; Fig. 4 is a side view of Fig. 3.

detailed description

As shown in FIG. 1 to FIG. 4, the copper composite panel cooker of the present invention comprises a cooker body composed of a copper composite plate, and the cooker body 1 of the cookware body is a four-layer metal composite plate whose outer layer is a T2 pure copper plate, The bottom 2 of the cookware of the cookware body is a three-layer metal composite plate with a stainless steel outer layer.

The structure of the four-layer copper composite plate of the cookware body 1 of the cookware body is T2 layer, 409 or 430 layer 4, 1050 layer 5, and 304 layer 6 in order from the outer layer to the inner layer (see Figs. 2 and 3). among them,

T2 is the grade of pure copper plate.

409 is the grade of stainless steel plate, namely OCrllTi,

430 is the grade of stainless steel plate, ie lCrl7,

1050 is the grade of pure aluminum plate,

30 is the grade of the stainless steel plate, ie 0Crl8Ti9.

The structure of the three-layer metal composite panel of the bottom 2 of the cookware is 409 or 430 layers 4, 1050 layers 5, and 304 layers 6 from the bottom outer layer to the inner layer (see FIGS. 2 and 3). The 409 or 430 stainless steel layer 4 is in direct contact with the induction cooktop to be suitable for use on an induction cooktop. In order to increase the viewing property of the bottom of the cookware, and can be used on the induction cooker, the 409 or 430 stainless steel plate on the bottom outer layer of the cookware may further be provided with a pattern-like recess 7 recessed inwardly, and the groove 7 has Pressed T2 pure copper plate 7', the pattern-like groove 7 is the plane of the 409 or 430 stainless steel plate layer 4 in contact with the electromagnetic cooker (see Figs. 3 and 4).

The copper composite board cooker described above, the manufacturing method thereof comprises the following steps:

First, first select the material, select four-layer copper composite board, the structure of each layer is T2 pure copper plate layer, 409 or 430 stainless steel plate layer, 1050 pure aluminum plate layer, 304 stainless steel plate layer;

Secondly, in the stretch forming, the T2 pure copper plate layer 3 is on the outer layer, and the 304 stainless steel plate layer 6 is on the inner layer to form the cookware body 1 of the cookware body and the cookware bottom 2 which is integral with the same (see Fig. 1). Both the body 1 and the bottom 2 of the cookware are four layers, and the T2 pure copper plates are all on the outer surface and cannot be applied on the induction cooker.

Third, in order to achieve the purpose of application on an induction cooker, the bottom 2 of the cookware must expose the plane of the stainless steel to make it a three-layer metal composite panel structure. There are two embodiments for this purpose. In the first embodiment, the T2 pure copper plate 3 of the outer layer of the copper composite plate of the bottom of the cookware body of the formed cookware body is mechanically processed or milled with a sander. Go, make contact with it, that is, expose the 409 or 430 stainless steel plate layer 4 of the second layer from the outside to the inner layer, and sand leveling, and become the outer layer of the bottom of the composite plate cooker 2, which can be directly formed with the induction cooker The plane of the contacted stainless steel layer is suitable for use on an induction cooker. From the 409 or 430 stainless steel plate layer 4, it is still 1050 pure aluminum layer 5 and 304 stainless steel plate layer 6 is three layers (see Figure 2). Gp , a three-layer metal composite panel is formed by processing the bottom of the cookware. Or,

In a second embodiment, in order to improve the ornamental, the bottom 2 of the cookware body of the formed cookware body is first stamped into a pattern-like recess 7 having an inwardly recessed recess, and the recess 7 is recessed into the 409 or 430 stainless steel plate 4, At the same time, the groove 7 has a pressed T2 pure copper plate 7', and then the T2 pure copper plate 3 on the outer surface of the bottom 2 of the cookware is machined by a machining method or ground with a sander, and the groove 7 is The T2 pure copper plate V is retained. At this time, the 409 or 430 stainless steel plate layer 4 is exposed and sanded to form a flat surface of the stainless steel layer which can be in direct contact with the induction cooker, so as to be suitable for use on an induction cooker. From the 409 or 430 stainless steel ply 4 inward is still 1050 pure aluminum layer 5 and stainless steel layer 6, a total of three layers (see Figure 3). SP, a three-layer metal composite plate is formed by processing the bottom of the cookware. The pattern-like grooves described in this embodiment can be formed into any pattern. In this embodiment, a plurality of uniformly curved grooves 7 are provided on the flat surface (see Fig. 4).

Fourth, after the copper composite panel cooker of the present invention is completed in the above structure, it is required not only to be used on the induction cooker but also to maintain the gorgeous luster of the copper color. Therefore, it is necessary to use the remaining outer layer T2 pure copper plate for the copper composite plate cooker. On the top, especially on the body 1 is sprayed with a silicone copper protectant to make the surface of the cookware have a certain hardness and maintain a bright luster. .

The remaining outer layer of the cookware T2 pure copper plate, especially after spraying the silicone copper protective agent on the body 1 , the copper protective agent is sintered and cured at a sintering temperature of 60-10 CTC, and the copper protective agent is sintered and cured. The temperature is preferably 80 °C. The cured copper protector is coated on the surface of the T2 copper and forms a protective film on the surface of the cookware. The protective film covering the surface of the T2 copper has a thickness of 10 - 12 μm and a protective film hardness of 2 Å.

In summary, the copper composite plate cooker of the present invention has a good magnetic property because the bottom portion 2 of the cookware is a stainless steel three-layer metal composite plate with a magnetic outer layer, and the flat surface of the cooker can be directly used with the induction cooker when used on an induction cooker. Magnetic induction occurs in contact with each other to generate heat for cooking. Moreover, due to the appearance of the copper composite plate cooker of the present invention, in particular, the body 1 of the stove is a four-layer copper composite plate whose outer layer is Τ2 copper, and the surface of the Τ2 copper is sprayed with a protective agent to form a protective film, which is certain The hardness, while maintaining its bright luster. It also maintains the functions used on many other stoves. Therefore, the copper composite panel cookware of the present invention is significantly superior to the prior art cookware. ·

Claims

Claim

A copper composite panel cooker comprising: a cooker body composed of a copper composite plate, wherein: the cookware body (1) of the cookware body is a four-layer copper composite plate with an outer layer of T2 copper, the cookware The bottom of the cookware (2) is a three-layer metal composite plate with a stainless steel outer layer.

2. A copper composite panel cooker according to claim 1, wherein: the structure of the four-layer copper composite panel of the cookware body (1) is T2 layer (3), 409 from the outer to the inner layers. Or 430 layers (4), 1050 layers (5), 304 layers (6), where

T2 is the grade of pure copper plate.

409 is the grade of stainless steel plate, namely OCrllTi,

430 is the grade of stainless steel plate, ie lCrl7,

1050 is the grade of pure aluminum plate,

304 is the grade of stainless steel plate, ie 0Crl8Ti9.

3. A copper composite panel cooker according to claim 1, wherein: the structure of the three-layer metal composite panel of the bottom of the cookware (2) is 409 or 430 layers in sequence from the bottom to the inner layer (4). 1050 layer (5), 304 layer (6), the 409 or 430 stainless steel layer (4) is directly in contact with the electromagnetic cooker.

The copper composite panel cooker according to claim 1 or 3, wherein: the 409 or 430 stainless steel plate on the bottom outer layer of the cookware is provided with a pattern-shaped recess (7) recessed inwardly, The groove (7) has a press-fitted T2 pure copper plate (7'). The pattern-like groove (7) is the plane of the 409 or 430 stainless steel plate layer (4) in contact with the induction cooktop.

A method of manufacturing a copper composite panel cooker according to claim 1, wherein: the method for manufacturing the copper composite panel cooker comprises the following steps:

Second, for stretch forming, the T2 pure copper plate layer (3) is on the outer layer, and the 304 stainless steel plate layer (6) is on the inner layer to form the cookware body (1) and the bottom of the cookware (2) ) ;

Third, the bottom of the cookware of the molded cookware body (2) The T2 pure copper plate layer (3) of the outer layer of the copper composite plate is ground by a machining method or a polishing machine to make it contact with the 409 or 430. The stainless steel sheet layer (4) is exposed and sanded and flattened, and becomes the outer layer of the bottom (2) of the composite panel cookware, forming a plane of a stainless steel layer that can directly contact the electromagnetic cooker; or First, the bottom (2) of the cookware body of the molded cookware body is first stamped into a pattern-like recess (7) having an inward recess, the recess (7) being recessed into the 409 or 430 stainless steel plate layer (4) while the groove (7) There is a pressed T2 pure copper plate (7'), and then the T2 pure copper plate on the outer layer plane of the bottom of the cookware (2) is machined by a machining method or ground with a sander, and the groove ( 7) The T2 pure copper plate (7') is retained. The 409 or 430 stainless steel plate layer (4) is exposed and sanded to form a plane of the stainless steel layer which can directly contact the electromagnetic cooker; fourth, the copper composite plate is provided with the remaining outer layer T2 pure copper plate Spray silicone copper protectant to make the surface of the cookware have a certain hardness and maintain a bright luster.

The method for manufacturing a copper composite panel cooker according to claim 5, wherein: the remaining outer layer T2 of the cookware is sprayed with a silicone copper protective agent on a pure copper plate, and is required to be at 60-100 ° C. The copper protective agent is sintered and solidified at the sintering temperature. After curing, the copper protective agent covers the surface of the T2 copper and forms a protective film on the surface of the cookware.

7. A method of making a copper composite panel cooker according to claim 5 or 6, wherein: the protective film covering the surface of the T2 copper has a thickness of 10 to 12 μm and the protective film has a hardness of 2 Å.

A method of producing a copper composite panel cooker according to claim 5 or 6, wherein the temperature at which the copper protective agent is sintered and cured is preferably 80 °C.