CN108720542A - A kind of cooker and its manufacturing method of electromagnetic heating - Google Patents
A kind of cooker and its manufacturing method of electromagnetic heating Download PDFInfo
- Publication number
- CN108720542A CN108720542A CN201710266024.5A CN201710266024A CN108720542A CN 108720542 A CN108720542 A CN 108720542A CN 201710266024 A CN201710266024 A CN 201710266024A CN 108720542 A CN108720542 A CN 108720542A
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- cooker
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000011159 matrix material Substances 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims description 21
- 238000005507 spraying Methods 0.000 claims description 21
- 229910001021 Ferroalloy Inorganic materials 0.000 claims description 12
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 235000007164 Oryza sativa Nutrition 0.000 claims description 7
- 235000009566 rice Nutrition 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000005389 magnetism Effects 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 229910002551 Fe-Mn Inorganic materials 0.000 claims description 3
- 229910017082 Fe-Si Inorganic materials 0.000 claims description 3
- 229910017112 Fe—C Inorganic materials 0.000 claims description 3
- 229910017133 Fe—Si Inorganic materials 0.000 claims description 3
- 235000013339 cereals Nutrition 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 239000010410 layer Substances 0.000 description 134
- 239000007789 gas Substances 0.000 description 8
- 241000209094 Oryza Species 0.000 description 6
- 239000011229 interlayer Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007751 thermal spraying Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 239000005751 Copper oxide Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010288 cold spraying Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910000431 copper oxide Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000011344 liquid material Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000011253 protective coating Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 239000010965 430 stainless steel Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- -1 fluororesin Polymers 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
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- 238000005088 metallography Methods 0.000 description 1
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- 238000000465 moulding Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
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- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Cookers (AREA)
Abstract
The present invention relates to cooker fields, disclose a kind of cooker and its manufacturing method of electromagnetic heating.The cooker includes cooker matrix (1), the heat-conducting layer (2) being formed on at least partly outer surface of the cooker matrix (1) and the magnetic layer (3) being formed on at least partly surface of the heat-conducting layer (2), wherein, on the interface that the cooker matrix (1) contacts with the heat-conducting layer (2), the material of the heat-conducting layer (2) is embedded in the cooker matrix (1) with the first continuous laciniation；On the interface that the heat-conducting layer (2) is contacted with the magnetic layer (3), the material of the magnetic layer (3) is embedded in the heat-conducting layer (2) with the second continuous laciniation.According in cooker of the present invention, there is stronger binding force, it can be ensured that heat-conducting layer and magnetic layer are difficult to fall off or burst apart between heat-conducting layer and cooker matrix and between magnetic layer and heat-conducting layer.
Description
Technical field
The present invention relates to cooker fields, more particularly to the cooker and its manufacturing method of a kind of electromagnetic heating.
Background technology
The materials such as aluminium alloy, 304 stainless steels are widely used general in household electronic products, but these are non magnetic or weak lead
The electromagnetic heating function of the cookware of magnetic material is undesirable.The existing processes of pot mostly use greatly explosion and are welded standby Al/430 in IH
The composite plate punch forming of stainless steel, or 430 stainless sheet steels are inlayed in the aluminium alloy bottom of heating using high pressure, pass through pot
The eddy current effect that 430 stainless steel plate of magnetism of tool appearance is formed under the action of high-frequency alternating magnetic field carries out sensing heating.First
The technical process of kind of scheme is more complex, cost is higher.And second scheme can not solve a pot body high position and answer asking for bottom stainless steel plate
Topic, and its electromagnetic heating power is smaller.
Pot such as structure is the interior pot of aluminium alloy or titanium alloy/copper alloy/magnetic stainless steel in existing multilayer composite sheet,
Copper alloy layer and metallic matrix are mainly hot pressing or explosive welding molding, different metal between copper alloy layer and magnetic stainless steel
The fitting defective tightness of interlayer is easy to reduce the heat transfer property of copper alloy layer there are gap.In addition, the binding force of interlayer also compared with
Difference, inside in pot punching course, interlayer is susceptible to cracking phenomena.And plasma spray technology is used, in aluminium alloy or titanium alloy etc.
When copper alloy heat-conducting layer and ferroalloy magnetic layer prepared by matrix surface, since partial oxidation can occur in spraying process for copper,
The copper oxide field trash of formation can be present in the form of impurity copper alloy and metallic matrix interface and copper alloy with lead
The interface of magnetic metal layer.In addition, the compactness because of hot-spraying coating is relatively poor, in these interfaces, there is likely to be more
Hole the defects of.The presence such as the copper oxide and hole that have thermal conductivity poor due to these interfaces can lead to leading for interface
Thermal effect becomes poor.In addition, the interior pot of copper alloy layer containing thermal spraying and ferroalloy magnetic layer, the binding force of interlayer also compared with
Difference applies interlayer and is susceptible to cracking phenomena.
Invention content
The purpose of the invention is to overcoming in the cooker of existing electromagnetic heating between heat-conducting layer and cooker matrix and
Binding force is poor between heat-conducting layer and magnetic layer, is susceptible to the problem of cracking, provides a kind of cooker and its system of electromagnetic heating
Make method.
To achieve the goals above, one aspect of the present invention provides a kind of cooker of electromagnetic heating, which includes cooker base
Body, the heat-conducting layer being formed on at least partly outer surface of the cooker matrix and it is formed in the heat-conducting layer at least partly
Magnetic layer on surface, wherein on the interface that the cooker matrix is contacted with the heat-conducting layer, the material of the heat-conducting layer with
First continuous laciniation is embedded in the cooker matrix；On the interface that the heat-conducting layer is contacted with the magnetic layer, institute
It states the material of magnetic layer and the heat-conducting layer is embedded in the second continuous laciniation.
Preferably, in the described first continuous laciniation and the second continuous laciniation, tooth top with
Maximum height difference between bottom of the tooth is 10-80 microns, and the facewidth is 10-80 microns.
Preferably, the ratio between the thickness of the heat-conducting layer and the thickness of the magnetic layer are 1：1-10.
It is highly preferred that the thickness of the heat-conducting layer is 0.03-0.1 millimeters, the thickness of the magnetic layer is 0.1-0.6 millis
Rice.
Preferably, the heat-conducting layer and the magnetic layer are formed in the bottom of the cooker matrix, or are formed in described
The bottom of cooker matrix and on the side wall of bottom contiguous.
It is highly preferred that the heat-conducting layer and the magnetic layer be formed in the cooker matrix bottom and with bottom contiguous
On side wall, and formation height H of the heat-conducting layer on side wall1, the formation height H of the magnetic layer on side wall2And it is described
The overall height H of cooker matrix0Between meet：H1/H0=1/4~1, H2/H0=1/6~1, H1/H2≥1。
Preferably, the surface area S of the heat-conducting layer1, the magnetic layer surface area S2And the side wall of the cooker matrix
With the sum of the area of bottom S0Between meet：S1/S0=1/4~1, S2/S0=1/4~1, S1/S2≥1。
Preferably, the magnetic layer is formed by magnetic ferroalloy.
It is highly preferred that the ferroalloy of the magnetism is at least one of Fe-C alloys, Fe-Si alloys and Fe-Mn alloys,
And the Fe contents in the ferroalloy of the magnetism are 95 weight % or more.
Preferably, the heat-conducting layer is formed by copper alloy or silver.
Preferably, the material of the cooker matrix is non magnetic or soft magnetically permeable material, and more preferably aluminium alloy or 304 is not
Become rusty steel.
Preferably, the cooker further includes the antirust coat being formed on at least partly surface of the magnetic layer.
Another aspect of the present invention provides a kind of method of the cooker of the above-mentioned electromagnetic heating of manufacture, and this method includes following step
Suddenly：
(1) Heat Conduction Material is sprayed on at least partly outer surface of cooker matrix to be formed by air force spray coating method
Heat-conducting layer；
(2) Magnaglo is sprayed on at least partly surface of the magnetic layer to be formed by air force spray coating method
Magnetic layer；And
(3) optionally antirust coat is formed on the magnetic layer.
Preferably, the grain size of the Magnaglo is 10-50 microns.
Preferably, in step (1) and (2), the implementation condition of the air force spray coating method includes：Injection pressure is 1-
5MPa, jet length are 10-50 millimeters, and gas heating temperature is 300-1000 DEG C.
In the cooker of the electromagnetic heating provided by the invention, keep the material of heat-conducting layer embedding with continuous laciniation
Enter cooker matrix, and the material of magnetic layer is made to be embedded in heat-conducting layer with continuous laciniation so that heat-conducting layer and cooker matrix
Between and magnetic layer and heat-conducting layer between there is stronger binding force (up to 30-50MPa), it can be ensured that heat-conducting layer and magnetic conduction
Layer is difficult to fall off or burst apart.
Moreover, in the manufacturing method of the cooker of the electromagnetic heating provided by the invention, pass through air force spray coating method
Heat-conducting layer and magnetic layer are formed, is not deposited substantially on the contact interface of cooker matrix and heat-conducting layer and magnetic layer in heat-conducting layer
The oxide or hole the defects of, it can be ensured that the heat that magnetic layer is generated in electromagnetic heating preferably passes to heat-conducting layer, and
Heat-conducting layer also quickly passes to cooker matrix, improves the temperature uniformity of cooker matrix, to obtain preferable electromagnetic heating effect
Fruit.
Description of the drawings
Fig. 1 is the structural schematic diagram of cooker of the present invention；
Fig. 2 is the close-up schematic view of cooker shown in FIG. 1.
Reference sign
1 cooker matrix, 2 heat-conducting layer
3 magnetic layer, 4 antirust coat
Specific implementation mode
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower " is typically referred to reference to attached
It is upper and lower shown in figure；" inside and outside " refers to the inside and outside of the profile relative to each component itself.
As illustrated in fig. 1 and 2, the cooker of electromagnetic heating of the present invention includes cooker matrix 1, is formed in the cooker base
Heat-conducting layer 2 on at least partly outer surface of body 1 and the magnetic layer 3 being formed on at least partly surface of the heat-conducting layer 2,
Wherein, on the interface that the cooker matrix 1 is contacted with the heat-conducting layer 2, the material of the heat-conducting layer 2 is with the first continuous saw
Dentalation is embedded in the cooker matrix 1；On the interface that the heat-conducting layer 2 is contacted with the magnetic layer 3, the magnetic layer 3
Material the heat-conducting layer 2 is embedded in the second continuous laciniation.
In term " continuous laciniation ", " continuous " refers to that each sawtooth of laciniation is continuously to arrange
, it there is no that platform-like (namely lamellar) exists between two neighboring sawtooth；Here zigzag is not limited to sternly
Zigzag on the geometric meaning of lattice can also be the combination of various similar jagged irregular shapes.
In the described first continuous laciniation and the second continuous laciniation, the tooth of laciniation
Maximum height difference (△ H) between top and bottom of the tooth is preferably 10-80 microns, that is to say, that the material of heat-conducting layer 2 is embedded in cooker base
Depth in the material insertion heat-conducting layer 2 of depth and magnetic layer 3 in body 1 is respectively preferably 10-80 microns, specifically, example
Such as can be 10 microns, 15 microns, 20 microns, 25 microns, 30 microns, 35 microns, 40 microns, 45 microns, 50 microns, it is 55 micro-
In the range that any two in rice, 60 microns, 65 microns, 70 microns, 75 microns, 80 microns and these point values is constituted
Arbitrary value.It is further preferred that the maximum height difference between the tooth top and bottom of the tooth of the laciniation is 15-70 microns, more
Preferably 20-70 microns, be still more preferably 20-60 microns.
In the described first continuous laciniation and the second continuous laciniation, the tooth of laciniation
Wide (△ L) is preferably 10-80 micron, specifically, such as can for 10 microns, 15 microns, 20 microns, 25 microns, 30 microns, 35
Micron, 40 microns, 45 microns, 50 microns, 55 microns, 60 microns, 65 microns, 70 microns, 75 microns, 80 microns and these points
Arbitrary value in the range that any two in value is constituted.It is further preferred that the facewidth of the laciniation is 20-60
Micron, more preferably 20-50 microns.The facewidth of the laciniation refers to the horizontal distance between two neighboring bottom of the tooth.
In the present invention, the ratio between the thickness of the heat-conducting layer 2 and the thickness of the magnetic layer 3 preferably 1：1-10, specifically
Ground, such as can be 1：1,1：2,1：3,1：4,1：5,1：6,1：7,1：8,1：9,1：10 and these ratios in any two
Arbitrary ratio in the range constituted.It is further preferred that the thickness of the thickness of the heat-conducting layer 2 and the magnetic layer 3 it
Than 1:2-8, more preferably 1:3-7.
The thickness of the heat-conducting layer 2 can be 0.03-0.1 millimeters, specifically, such as can be 0.03 millimeter, 0.04 milli
Arbitrary two in rice, 0.05 millimeter, 0.06 millimeter, 0.07 millimeter, 0.08 millimeter, 0.09 millimeter, 0.1 millimeter and these point values
Arbitrary value in a constituted range.It is further preferred that 0.05-0.08 millimeters of the thickness of the heat-conducting layer 2.
The thickness of the magnetic layer 3 can be 0.05-1 millimeter, specifically, for example, can for 0.05 millimeter, 0.08 millimeter,
0.1 millimeter, 0.12 millimeter, 0.15 millimeter, 0.18 millimeter, 0.2 millimeter, 0.23 millimeter, 0.25 millimeter, 0.28 millimeter, 0.3 milli
Rice, 0.33 millimeter, 0.35 millimeter, 0.38 millimeter, 0.4 millimeter, 0.43 millimeter, 0.45 millimeter, 0.48 millimeter, 0.5 millimeter, 0.53
Millimeter, 0.55 millimeter, 0.58 millimeter, 0.6 millimeter, 0.65 millimeter, 0.7 millimeter, 0.8 millimeter, 0.9 millimeter, 1 millimeter and these
Arbitrary value in the range that any two in point value is constituted.It is further preferred that the thickness of the magnetic layer 3 is 0.1-
0.6 millimeter.
In the present invention, the forming position of the heat-conducting layer 2 and the magnetic layer 3 can be in such a way that this field be conventional
It determines, for example, the heat-conducting layer 2 and the magnetic layer 3 are both formed in the bottom of the cooker matrix 1, or is formed in described
The bottom of cooker matrix 1 and on the side wall of bottom contiguous.In more preferably embodiment, the heat-conducting layer 2 and described lead
Magnetosphere 3 is both formed in the bottom of the cooker matrix 1 and on the side wall of bottom contiguous, and the heat-conducting layer 2 is on side wall
Form height H1, formation height H of the magnetic layer 3 on side wall2And the overall height H of the cooker matrix 10Between meet：
H1/H0=1/4~1, H2/H0=1/6~1, H1/H2≥1。
In the present invention, it is preferred to the surface area S of the heat-conducting layer 21, the magnetic layer 3 surface area S2And it is described
The sum of the side wall of cooker matrix 1 and the area of bottom S0Between meet：S1/S0=1/4~1, S2/S0=1/4~1, S1/S2≥1。
In the present invention, the magnetic layer 3 can be formed by the magnetic material of this field routine.In the preferred case, institute
Magnetic layer 3 is stated to be formed by magnetic ferroalloy.The ferroalloy of the magnetism can be that Fe-C alloys, Fe-Si alloys and Fe-Mn are closed
At least one of gold.In the ferroalloy of the magnetism, Fe contents can be 95 weight % or more, preferably 95-99.5 weights
Measure %, more preferably 96-99 weight %, further preferred 96-98.5 weight %.
In the present invention, the heat-conducting layer 2 can be formed by the highly heat-conductive material of this field routine.In the preferred case,
The heat-conducting layer 2 is formed by copper alloy or silver.
In the present invention, the material of the cooker matrix 1 can be the conventional selection of this field, such as can be this field
Conventional non magnetic or soft magnetically permeable material.In a preferred embodiment, the material of the cooker matrix 1 is selected from aluminium alloy
Or 304 stainless steel.
In the present invention, between the heat-conducting layer 2 and the cooker matrix 1 and the heat-conducting layer 2 and the magnetic layer 3
Between binding force respectively can be 30-50MPa, specifically, for example, can be 30MPa, 31MPa, 32MPa, 33MPa,
34MPa、35MPa、36MPa、37MPa、38MPa、39MPa、40MPa、41MPa、42MPa、43MPa、44MPa、45MPa、
Arbitrary value in the range that any two in 46MPa, 47MPa, 48MPa, 49MPa, 50MPa and these point values is constituted.
Preferably, between the heat-conducting layer 2 and the cooker matrix 1 and the binding force between the heat-conducting layer 2 and the magnetic layer 3
Respectively 35-50MPa, more preferably 37-45MPa.In the present invention, the binding force according to《GB/T 8642-2002 thermal jets
Apply the test of resisting binding strength》Defined method detection.
In the present invention, as illustrated in fig. 1 and 2, the cooker can also include being formed in the magnetic layer 3 at least partly
Antirust coat 4 on surface.Under preferable case, the antirust coat 4 is completely covered on the magnetic layer 3.The thickness of the antirust coat 4
Degree can be 0.02-0.08 millimeters, preferably 0.03-0.05 millimeters.The antirust coat 4 can be applied by the antirust of this field routine
The single or multi-layer structure that layer material is formed.The rust-proof coating material can for example be selected from silicones, fluororesin, epoxy resin
And at least one of the resin combination containing aluminium powder or zinc powder, preferably fluororesin and/or the resin containing aluminium powder or zinc powder
Composition.
In the present invention, the cooker of the electromagnetic heating can be that electric pressure cooking saucepan, electric cooker, electromagnetic oven etc. are various conventional
Use the cook utensil of electromagnetic heating.
The method of the cooker of the manufacture electromagnetic heating provided by the invention includes the following steps：
(1) Heat Conduction Material is sprayed on at least partly outer surface of cooker matrix to be formed by air force spray coating method
Heat-conducting layer；
(2) Magnaglo is sprayed on at least partly surface of the magnetic layer to be formed by air force spray coating method
Magnetic layer；And
(3) optionally antirust coat is formed on the magnetic layer.
In step (1) and (2), the method for forming the heat-conducting layer and the magnetic layer is air force spray coating method,
Referred to as cold spraying, substantially non-oxidation in heat-conducting layer and magnetic layer which forms, spray finishing material (i.e. Heat Conduction Material
Or Magnaglo) cooker matrix can be hit under the rate close to twice of velocity of sound under high-speed pneumatic, thus coating has very
High compactness, and broached-tooth design can also be knocked out on the surface so that between heat-conducting layer and cooker matrix and heat-conducting layer with
Very strong binding force can be formed between magnetic layer.
In the present invention, the grain size of the Magnaglo is preferably 10-50 microns, more preferably 10-40 microns, further
Preferably 20-40 microns.The Magnaglo can be the magnetic ferroalloy being described above.
In step (1) and (2), the implementation condition of the air force spray coating method may include：Injection pressure is 1-
5MPa, jet length are 10-50 millimeters, and gas heating temperature is 0-1000 DEG C.In a preferred embodiment, the air
The implementation condition of powered spraying method includes：Working gas is the mixed gas of nitrogen, helium or the two, and injection pressure is 1-
5MPa, gas heating temperature are 0-1000 DEG C, gas velocity 1-2m3/ min, powder feed rate 5-15kg/h, jet length
From being 10-50 millimeters, consumption power is 5-25kW, and powder size is 10-50 microns.For the injection pressure, specifically, example
Such as can be 1MPa, 1.5MPa, 2MPa, 2.1MPa, 2.2MPa, 2.3MPa, 2.4MPa, 2.5MPa, 2.6MPa, 2.7MPa,
2.8MPa、2.9MPa、3MPa、3.1MPa、3.2MPa、3.3MPa、3.4MPa、3.5MPa、3.6MPa、3.7MPa、3.8MPa、
Arbitrary value in the range that any two in 3.9MPa, 4MPa, 4.5MPa, 5MPa and these point values is constituted.Preferably,
The injection pressure is 2-4MPa.Herein, pressure refers to absolute pressure.For the gas heating temperature, specifically, example
Such as can be 100 DEG C, 200 DEG C, 300 DEG C, 400 DEG C, 500 DEG C, 550 DEG C, 600 DEG C, 650 DEG C, 700 DEG C, 750 DEG C, 800 DEG C, 850
DEG C, the arbitrary value in the range that any two in 900 DEG C, 1000 DEG C and these point values is constituted.Preferably, the gas
Heating temperature is 500-900 DEG C, more preferably 600-800 DEG C.Specifically, such as can be 10 millis for the jet length
Appointing in rice, 15 millimeters, 20 millimeters, 25 millimeters, 30 millimeters, 35 millimeters, 40 millimeters, 45 millimeters, 50 millimeters and these point values
Arbitrary value in two ranges constituted of anticipating.Preferably, the jet length is 20-50 millimeters, more preferably 30-50 millis
Rice.
In the present invention, the method for the manufacture cooker can also include：Cold spraying (i.e. air is being carried out to cooker matrix
Dynamic spraying) before, oil removing and ungrease treatment are carried out to the cooker matrix, keep the spatter property on its surface.
The method of a preferred embodiment of the invention, the manufacture cooker includes the following steps：
(1) oil removing and ungrease treatment are carried out to the surface of cooker matrix, keeps the spatter property on its surface；
(2) use air force spray coating method that highly heat-conductive material is sprayed by step (1) treated cooker matrix
At least partly on outer surface (preferably bottom or bottom plus side wall), heat-conducting layer is formed on cooker matrix；
(3) Magnaglo is sprayed on at least partly surface of the heat-conducting layer using air force spray coating method, with shape
At magnetic layer；
(4) the cooker matrix for being formed with heat-conducting layer and magnetic layer is subjected to oil removing and ungrease treatment, then on magnetic layer
Rust prevention by applying liquid material protective coating.
The present invention is described in further details with comparative example by the following examples.
Embodiment 1-6
Oil removing and ungrease treatment are carried out to the surface of cooker matrix, keep the spatter property on its surface.It is sprayed using air force
Highly heat-conductive material is sprayed into the bottom of cooker matrix to form heat-conducting layer by coating.Using air force spray coating method by Magnaglo
The surface of magnetic layer is sprayed into form magnetic layer.The cooker matrix for being formed with heat-conducting layer and magnetic layer is subjected to oil removing and degreasing
It handles, then the rust prevention by applying liquid material protective coating on magnetic layer.Wherein, the implementation condition in air force spraying process and height are led
Hot material and Magnaglo are as shown in table 1.With reference to《GB/T 15748-1995 quantitative metallography craft assay methods》Detection is formed
Maximum height difference (△ H) between the facewidth (△ L) and tooth top and bottom of the tooth of laciniation；According to《GB/T 8642-2002
The test of thermal spraying resisting binding strength》Between defined method detection heat-conducting layer and cooker matrix and magnetic layer and heat-conducting layer
Binding force, testing result is as shown in table 2.
Comparative example 1
Cooker is prepared according to the method for embodiment 1, the difference is that the spraying process for forming heat-conducting layer and magnetic layer uses
The method of plasma spraying is implemented, and main technologic parameters are：Spraying current is 550A, spray voltage 80V, and spray distance is
120mm, air pressure 0.5MPa.According to《The test of GB/T 8642-2002 thermal spraying resisting binding strengths》Defined method
The binding force between heat-conducting layer and cooker matrix and magnetic layer and heat-conducting layer is detected, testing result is as shown in table 2.
Table 1
Table 2
Heat-conducting layer and cooker base in the cooker manufactured according to the method described in the present invention it can be seen from the data of upper table 2
There is stronger binding force between body and magnetic layer and heat-conducting layer.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical scheme of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (12)
1. a kind of cooker of electromagnetic heating, which is characterized in that the cooker includes cooker matrix (1), is formed in the cooker matrix
(1) heat-conducting layer (2) at least partly outer surface and the magnetic conduction being formed on at least partly surface of the heat-conducting layer (2)
Layer (3), wherein on the interface that the cooker matrix (1) contacts with the heat-conducting layer (2), the material of the heat-conducting layer (2) with
First continuous laciniation is embedded in the cooker matrix (1)；It is contacted with the magnetic layer (3) in the heat-conducting layer (2)
On interface, the material of the magnetic layer (3) is embedded in the heat-conducting layer (2) with the second continuous laciniation.
2. cooker according to claim 1, wherein in the described first continuous laciniation and described second continuous
In laciniation, the maximum height difference between tooth top and bottom of the tooth is 10-80 microns, and the facewidth is 10-80 microns.
3. cooker according to claim 1, wherein the thickness of the heat-conducting layer (2) and the thickness of the magnetic layer (3) it
Than being 1：1-10；
Preferably, the thickness of the heat-conducting layer (2) is 0.03-0.1 millimeters, and the thickness of the magnetic layer (3) is 0.1-0.6 millis
Rice.
4. according to the cooker described in any one of claim 1-3, wherein the heat-conducting layer (2) and the magnetic layer (3) shape
At in the bottom of the cooker matrix (1), or it is formed in the bottom of the cooker matrix (1) and the side wall with bottom contiguous
On.
5. cooker according to claim 4, wherein the heat-conducting layer (2) and the magnetic layer (3) are formed in the cooker
The bottom of matrix (1) and on the side wall of bottom contiguous, and formation height H of the heat-conducting layer (2) on side wall1, described lead
Formation height H of the magnetosphere (3) on side wall2And the overall height H of the cooker matrix (1)0Between meet：H1/H0=1/4~
1, H2/H0=1/6~1, H1/H2≥1。
6. according to the cooker described in any one of claim 1-3, wherein the surface area S of the heat-conducting layer (2)1, described lead
The surface area S of magnetosphere (3)2And the side wall of the cooker matrix (1) and the sum of the area S of bottom0Between meet：S1/S0=1/
4~1, S2/S0=1/4~1, S1/S2≥1。
7. according to the cooker described in any one of claim 1-3, wherein the magnetic layer (3) is by magnetic ferroalloy shape
At；
Preferably, the ferroalloy of the magnetism is at least one of Fe-C alloys, Fe-Si alloys and Fe-Mn alloys, and described
Fe contents in magnetic ferroalloy are 95 weight % or more.
8. according to the cooker described in any one of claim 1-3, wherein the heat-conducting layer (2) is formed by copper alloy or silver；
The material of the cooker matrix (1) is non magnetic or soft magnetically permeable material, preferably aluminium alloy or 304 stainless steels.
9. according to the cooker described in any one of claim 1-3, wherein the cooker further includes being formed in the magnetic layer
(3) antirust coat (4) at least partly surface.
10. the method for the cooker described in a kind of any one of manufacturing claims 1-9, this approach includes the following steps：
(1) Heat Conduction Material is sprayed on at least partly outer surface of cooker matrix to form heat conduction by air force spray coating method
Layer；
(2) Magnaglo is sprayed on at least partly surface of the magnetic layer to form magnetic conduction by air force spray coating method
Layer；And
(3) optionally antirust coat is formed on the magnetic layer.
11. according to the method described in claim 10, wherein, the grain size of the Magnaglo is 10-50 microns.
12. according to the method described in claim 10, wherein, in step (1) and (2), the reality of the air force spray coating method
The condition of applying includes：Injection pressure is 1-5MPa, and jet length is 10-50 millimeters, and gas heating temperature is 300-1000 DEG C.
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| CN111772463A (en) * | 2019-04-04 | 2020-10-16 | 佛山市顺德区美的电热电器制造有限公司 | Double-bottom pot and manufacturing method thereof |
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| Publication number | Publication date |
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| CN108720542B (en) | 2023-12-08 |
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