CN107245562B - The method that a kind of pair of cast iron cooker is surface-treated - Google Patents
The method that a kind of pair of cast iron cooker is surface-treated Download PDFInfo
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- CN107245562B CN107245562B CN201710501678.1A CN201710501678A CN107245562B CN 107245562 B CN107245562 B CN 107245562B CN 201710501678 A CN201710501678 A CN 201710501678A CN 107245562 B CN107245562 B CN 107245562B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D5/00—Heat treatments of cast-iron
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- Crystallography & Structural Chemistry (AREA)
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- Organic Chemistry (AREA)
- Frying-Pans Or Fryers (AREA)
- Cookers (AREA)
Abstract
The invention discloses the methods that a kind of pair of cast iron cooker is surface-treated, it is cleaned method includes the following steps: 1) casting iron pan is polished, clean method of polishing is first ball blast, it washes again, then it dries, its surface coat rapeseed oil, cast iron cooker surface coat vegetable oil with a thickness of 4 μm；2) cast iron cooker for being coated with vegetable oil is heat-treated；The heat treatment includes the pre-heat treatment, high-temperature baking processing and cooling processing；The pre-heat treatment includes from room temperature to 300 DEG C；The process of the high-temperature baking processing includes the second baking stage for rising to 600 DEG C of the first baking stage from 300 DEG C and being down to 300 DEG C from 600 DEG C；The cooling processing includes being cooled to room temperature from 300 DEG C.The cast iron cooker that this method is handled have the function of it is good it is anti-oxidant, anti-get rusty and non-stick nature, the cooker use scope is wide and longer service life, this method environmental protection, simple, is suitble to the popularization of cast iron cooker processing.
Description
(entitled a kind of pair of cast iron cooker carries out at surface for the application for a patent for invention that the application is applicant Wang Yingjie
The method and cast iron cooker of reason, application No. is 201510875545.1, applying date 2015.12.2) divisional application.
Technical field
The present invention relates to the processing of cooker and manufacture crafts, and in particular, to a kind of pair of cast iron cooker is surface-treated
Method and cast iron cooker.
Background technique
The life of cooker and people are closely bound up, and wherein cast iron cooker is most common, most traditional one of cooker.But cast iron
Cooker gets rusty easily when air and water exist simultaneously makes surface scaling, seriously affects appearance and service life.In addition, being
Reduction oil smoke, life are more environmentally-friendly, people often prefer using easy cleaning, can light pan-fried cooked food non-stick pan.
Currently, those skilled in the art will usually be handled cast iron cooker surface, common method is such as in cooker table
Face sprays non-viscous paint (such as polytetrafluoroethylene (PTFE)) or ceramic coating.CN102641078B discloses a kind of production of non-sticking cooking utensils
Method, this method by cooker form, surface treatment, meltallizing processing, spraying non-viscous paint (poly- fluororesin), sintering and etc. it is complete
At the production of non-sticking cooking utensils.This method is extremely complex, and the cast iron products of such spray-on coating, and anchoring strength of coating is not high,
Once there is part to be corroded coating spreading quickly, coating large area is caused to fall off, metallic matrix rust corrosion quickly.And it is this
Characteristic determines that this product cannot use spades cooking, greatly limits its application.And the product of ceramic coating, due to ceramics
Brittleness is big, and rapid heat cycle has the possibility burst in use process, and slight crack once occurs, will be unable to repair, coating large area
Expand, causes cooker metallic matrix to corrode, greatly reduce service life.In addition, above-mentioned method all exists, cost is excessively high to be asked
Topic.
Therefore, the irreplaceability in view of cast iron cooker in life, this field need a kind of with good anti-oxidant
And the processing method of non-adhesion behavior, cooker applied widely and cooker.
Summary of the invention
It is an object of the invention to overcome in the method at above-mentioned existing cast iron cooker surface at high cost, complex process and
The defects of properties of product are bad provides method and cast iron cooker that a kind of pair of cast iron cooker is surface-treated.
The present inventor passes through the study found that by pre- after the cast iron cooker that vegetable oil is coated to after cleaning polishing
The product surface obtained after heat treatment, high-temperature baking processing and cooling processing will form the bright coating of black, the coating uniform
Covering cooker surface have the function of it is good it is anti-oxidant, anti-get rusty, and treated cooker is with non-stick nature, meanwhile,
The cooker reduces internal stress, improves internal structure structure stability, the toughness of cooker is increased, so that cooking a meal by heat treatment
Have it is indeformable, do not crack, physical property further increases.This method is at low cost, simple and easy, is particularly suitable for high-volume cooker table
Surface treatment.
To achieve the goals above, on the one hand, the present invention provides the method that a kind of pair of cast iron cooker is surface-treated, should
Method the following steps are included:
1) by after cast iron cooker polishing cleaning, vegetable oil is coated on its surface；
2) cast iron cooker for being coated with vegetable oil is heat-treated；
Wherein, the heat treatment includes the pre-heat treatment, high-temperature baking processing and cooling processing；The pre-heat treatment include from
For room temperature to 300 DEG C, the high-temperature baking processing includes that cast iron cooker is placed in 300-600 DEG C of baking 15-25 minutes, described
Cooling processing includes being cooled to room temperature from 300 DEG C.In the present invention, room temperature refers to 20 ± 5 DEG C.
Preferably, in order to further increase processing after cast iron cooker anti-oxidant and non-adhesion behavior, in step 1), cast iron
Cooker surface coat vegetable oil with a thickness of 3-12 μm, further preferably 4-10 μm.Cast iron cooker surface coats vegetable oil
When thickness is less than 3 μm, poor effect, and it is greater than 12 μm or more, and it is little to the effect gain of processing, cause unnecessary waste.
In step 1) of the invention, the clean method of polishing can be according to method commonly used in the art, such as ball blast, water
Then power cleaning is dried.
In the case of in the present invention, it is preferred to, in step 2), the heating rate of the pre-heat treatment is 0.4-0.6 DEG C/s.
In the case of in the present invention, it is preferred to, in step 2), the process of the high-temperature baking processing includes rising from 300 DEG C
300 DEG C of the second baking stage is down to 600 DEG C of the first baking stages and from 600 DEG C, wherein the first baking stage
The cooling rate in heating rate and the second baking stage independently is 0.4-0.6 DEG C/s.
In the case of in the present invention, it is preferred to, in step 2), it is described cooling processing heating rate be 0.15-0.3 DEG C/
s。
In the present invention, the heat treatment process of step 2) can be carried out independently in single oven or baking oven, can also be
It is carried out in same oven or baking oven, it is preferable that heat treatment process is in the same oven to cool down with temperature programming and program or baking
It is carried out in case.Heat treatment process of the invention also functions to facilitation to the physical property of cast iron cooker.
In the present invention, the vegetable oil is not particularly limited, and can be vegetable oil commonly used in the art, such as institute
State vegetable oil can for edible vegetable oil, the edible vegetable oil be peanut oil, soybean oil, cottonseed oil, linseed oil,
One of rice bran oil, corn oil, castor oil, olive oil, palm oil and rapeseed oil are a variety of.Edible oil of the invention is simple
It is easy to get, does not add other coating additives, more environmentally-friendly health！
On the other hand, the present invention also provides a kind of cast iron cooker, the cast iron cooker by it is above-mentioned to cast iron cooker into
The method processing of row surface treatment.Cast iron cooker of the invention prevents metallic matrix from getting rusty, has since it is preferably anti-oxidant
Longer service life, in addition, slowly carbon distribution can further strengthen strength of coating to edible oil to cooker in use.The present invention
Cast iron cooker can be the common cooker, such as pot, basin, Barbecuing plate, tappasaki etc. in this field.
Cooker provided by the invention, the pitch-dark light in surface, more beautiful, health environment-friendly.
Compared with the prior art, the advantages of the present invention are as follows: 1. methods provided by the invention are at low cost, simple and easy；2.
Vegetable oil is only used only in method provided by the invention, does not add other chemical components, it is more environmentally-friendly, healthy；3. of the invention
The cast iron cooker applicability of method processing is more preferable, the service life is longer.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention will be described in detail by way of examples below.
In the examples below, the process of heat treatment (recalls triumphant prosperous automatic chemical industry in Suzhou in high temperature (800 degree of the highest temperature) oven
Industry equipment Co., Ltd manufacture) in carry out.
Embodiment 1
The method that a kind of pair of cast iron cooker is surface-treated, method includes the following steps:
1) casting iron pan is polished and is cleaned, clean method of polishing is first ball blast, then is washed, and is then dried, finally in its table
Face coat vegetable oil (peanut oil), cast iron cooker surface coat vegetable oil with a thickness of 7 μm；
2) cast iron cooker for being coated with vegetable oil is heat-treated；
Wherein, the heat treatment includes the pre-heat treatment, high-temperature baking processing and cooling processing；The pre-heat treatment include from
For room temperature to 300 DEG C, the heating rate of the pre-heat treatment is 0.45 DEG C/s；The process of high-temperature baking processing include from
300 DEG C rise to 600 DEG C of the first baking stage and are down to 300 DEG C of the second baking stage from 600 DEG C, wherein described first dries
The cooling rate in the heating rate in roasting stage and the second baking stage is 0.5 DEG C/s；The cooling processing includes from 300
It DEG C is cooled to room temperature, the heating rate of the cooling processing is 0.25 DEG C/s.After treatment, the casting iron pan that obtains that treated
A1。
Embodiment 2
The method that a kind of pair of cast iron cooker is surface-treated, method includes the following steps:
1) casting iron pan is polished and is cleaned, clean method of polishing is first ball blast, then is washed, and is then dried, and is applied on its surface
Cover vegetable oil (olive oil), cast iron cooker surface coat vegetable oil with a thickness of 10 μm；
2) cast iron cooker for being coated with vegetable oil is heat-treated；
Wherein, the heat treatment includes the pre-heat treatment, high-temperature baking processing and cooling processing；The pre-heat treatment include from
For room temperature to 300 DEG C, the heating rate of the pre-heat treatment is 0.6 DEG C/s；The process of high-temperature baking processing include from
300 DEG C rise to 600 DEG C of the first baking stage and are down to 300 DEG C of the second baking stage from 600 DEG C, wherein described first dries
The heating rate in roasting stage is 0.6 DEG C/s and the cooling rate in the second baking stage is 0.4 DEG C/s；The cooling processing packet
It includes and is cooled to room temperature from 300 DEG C, the heating rate of the cooling processing is 0.15 DEG C/s.After treatment, obtain that treated
Casting iron pan A2.
Embodiment 3
The method that a kind of pair of cast iron cooker is surface-treated, method includes the following steps:
1) casting iron pan is polished and is cleaned, clean method of polishing is first ball blast, then is washed, and is then dried, and is applied on its surface
Cover vegetable oil (rapeseed oil), cast iron cooker surface coat vegetable oil with a thickness of 4 μm；
2) cast iron cooker for being coated with vegetable oil is heat-treated；
Wherein, the heat treatment includes the pre-heat treatment, high-temperature baking processing and cooling processing；The pre-heat treatment include from
For room temperature to 300 DEG C, the heating rate of the pre-heat treatment is 0.4 DEG C/s；The process of high-temperature baking processing include from
300 DEG C rise to 600 DEG C of the first baking stage and are down to 300 DEG C of the second baking stage from 600 DEG C, wherein described first dries
The heating rate in roasting stage is 0.4 DEG C/s and the cooling rate in the second baking stage independently is 0.6 DEG C/s；The cooling
Processing includes that room temperature is cooled to from 300 DEG C, and the heating rate of the cooling processing is 0.3 DEG C/s.After treatment, it is handled
Casting iron pan A3 afterwards.
Embodiment 4
The method that a kind of pair of cast iron cooker is surface-treated, method includes the following steps:
1) casting iron pan is polished and is cleaned, clean method of polishing is first ball blast, then is washed, and is then dried, and is applied on its surface
Cover vegetable oil (soybean oil), cast iron cooker surface coat vegetable oil with a thickness of 12 μm；
2) cast iron cooker for being coated with vegetable oil is heat-treated；
Wherein, the heat treatment includes the pre-heat treatment, high-temperature baking processing and cooling processing；The pre-heat treatment include from
For room temperature to 300 DEG C, the heating rate of the pre-heat treatment is 0.45 DEG C/s；The high-temperature baking processing includes that cast iron is cooked a meal
Tool is placed in 500 DEG C and toasts 20 minutes；The cooling processing includes that room temperature is cooled to from 300 DEG C, the heating speed of the cooling processing
Degree is 0.25 DEG C/s.After treatment, the casting iron pan A4 that obtains that treated.
Embodiment 5
According to the method for embodiment 1 being surface-treated to cast iron cooker, the difference is that pre- described in step 1)
The heating rate of heat treatment is 2 DEG C/s；After treatment, the casting iron pan A5 that obtains that treated.
Embodiment 6
According to the method for embodiment 1 being surface-treated to cast iron cooker, the difference is that described in step 2)
The cooling rate in the heating rate in one baking stage and the second baking stage is 3 DEG C/s；After treatment, it is handled
Casting iron pan A6 afterwards.
Embodiment 7
According to the method for embodiment 1 being surface-treated to cast iron cooker, the difference is that being dropped described in step 2)
The heating rate of temperature processing is 2 DEG C/s；After treatment, the casting iron pan A7 that obtains that treated.
Embodiment 8
According to the method for embodiment 1 being surface-treated to cast iron cooker, the difference is that being cast described in step 1)
Iron kitchen utensils surface coat vegetable oil with a thickness of 1 μm；After treatment, the casting iron pan A8 that obtains that treated.
Comparative example
Such as the method for embodiment 1 being surface-treated to cast iron cooker, the difference is that the heat treatment process of step 2)
It is placed in 400 DEG C to be directly coated with the casting iron pan of vegetable oil and toasts 20 minutes, after treatment, the cast iron that obtains that treated
Pot D1.
Test case
Embodiment 1-8 and comparative example are obtained that treated, and casting iron pan A1-A8 and D1 carry out performance measurement.Specifically
Ground:
1, as reuse and application be container part coating, detect resinae or polymer type coating or other
The content of extract in substance, according to United States Food and Drag Administration relevant regulations (Test for F.D.A.Regulation
On Resinous and Polymeric Coating, U.S.Food and Drug Administration 21CFR Part
175.300 clause c3) it carries out, test result is as shown in table 1.
Specifically: container water capacity=450000mg；0.005% container water capacity=22.5mg；
Food-contacting surface product=40.3in2；Limitation=0.56mg//in of related 0.005% container water capacity2
Fixed limitation (fixed limit)=18mg//in2；High-temperature sterilization (120 DEG C) uses afterwards.
Table 1
| Chloroform extractable (mg/in in water2) | Chloroform extractable (mg/in in heptane2) | |
| A1 | < 0.1 | < 0.1 |
| A2 | < 0.1 | < 0.1 |
| A3 | < 0.1 | < 0.1 |
| A4 | < 0.1 | < 0.1 |
| A5 | < 0.1 | < 0.1 |
| A6 | < 0.1 | < 0.1 |
| A7 | < 0.1 | < 0.1 |
| A8 | < 0.1 | < 0.1 |
| D1 | < 0.2 | < 0.3 |
Data from table 1, it can be seen that the cast iron cooker that the present invention is handled meets food and the relevant regulation of drug.
2, it is dissolved out according to the test sample that the CPG7117.05 of United States Food and Drag Administration is required about other metals
Property lead, A1-A8 and D1 meet the requirement of above-mentioned file.
3, corrosion resistance test
According to the test method of the non-sticky coating of NFD21-511, specifically: by 10%NaCl solution (distilled water and sodium chloride
Configuration) A1-A8 and D1 is added, in untreated casting iron pan, adds at 1/2 volume, is heated to boiling, it is kept for slightly boiled 20 hours,
Distilled water is not added to keep solution concentration in midway, cleans and dries, the results are shown in Table 2.
Table 2
4, test non-stick
According to the test method of the non-sticky coating of NFD21-511, specifically: cleaning A1-A8 and D1, untreated with clean water
Casting iron pan inner surface, heating so that its internal surface temperature is maintained at 150-170 DEG C, the egg broken is put into pot, is not added
Enter edible oil, is heated to finally egg being taken the dish out of the pot with plastics/wooden spatula until egg cooks.As a result standard: make chicken with spatula
Egg residue is completely fallen off as good (7-10 points) non-stick, is not completely fallen off if egg is exhibition, different piece of wet gauze holds
Easy cleaning is then general (4-6 points), and cannot be washed with wet gauze is then bad (1-3 points), and the higher explanation of score is non-stick more
Good, concrete outcome is as shown in table 3.
Table 3
| As a result | |
| A1 | Good (9 points) |
| A2 | Good (9 points) |
| A3 | Good (9 points) |
| A4 | Good (8 points) |
| A5 | Good (8 points) |
| A6 | Good (7 points) |
| A7 | Good (7 points) |
| A8 | Generally (6 points) |
| D1 | Generally (5 points) |
| Untreated casting iron pan | Bad (2 points) |
From the results shown in Table 3, cast iron cookware of the invention has good non-stick.Further survey of the invention
Examination discovery, casting iron pan of the invention still has good non-stick when above-mentioned test carried out 20 times, it should be noted that
Inventor by the plastics in above-mentioned test method/wooden spatula change into spades still be able to realize it is good non-stick, inside pot
There is not exception in surface.In addition inventor has also carried out above-mentioned test using the non-stick pan of the polytetrafluoroethylene (PTFE) of purchase, does not glue
Performance is especially good (10 points), and still, when plastics/wooden spatula changes spades into, non-stick pan interior surface will appear more scratch,
After cleaning up, however it remains, illustrate to destroy polytetrafluorethylecoatings coatings.
To sum up, the present invention provides method treated cast iron cooker have it is good it is corrosion-resistant, anti-get rusty, it is anti-oxidant
Property, also there is good non-stick nature, while the cooker applicability more preferable (be not afraid of spades such as, hit) and longer using the longevity
Life, cost is relatively low for this method, simple and easy, more environmentally-friendly health, has huge application value.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little 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 where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.In addition, any group can also be carried out between a variety of different embodiments of the invention
It closes, as long as it does not violate the idea of the present invention, it should also be regarded as the disclosure of the present invention.
Claims (2)
1. the method that a kind of pair of cast iron cooker is surface-treated, which is characterized in that method includes the following steps:
1) casting iron pan is polished and is cleaned, clean method of polishing is first ball blast, then is washed, and is then dried, and coats dish on its surface
Seed oil, cast iron cooker surface coat rapeseed oil with a thickness of 4 μm；
2) cast iron cooker for being coated with rapeseed oil is heat-treated；
Wherein, the heat treatment includes the pre-heat treatment, high-temperature baking processing and cooling processing；The pre-heat treatment includes from room temperature
300 DEG C are warming up to, the heating rate of the pre-heat treatment is 0.4 DEG C/s；The process of the high-temperature baking processing includes from 300 DEG C
It rises to 600 DEG C of the first baking stage and is down to 300 DEG C of the second baking stage from 600 DEG C, wherein the first baking stage
Heating rate be 0.4 DEG C/s and it is described second baking the stage cooling rate independently be 0.6 DEG C/s；The cooling processing packet
It includes and is cooled to room temperature from 300 DEG C, the speed of the cooling processing is 0.3 DEG C/s.
2. a kind of cast iron cooker, which is characterized in that the cast iron cooker carries out table to cast iron cooker by described in claim 1
The method of surface treatment is handled.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710501678.1A CN107245562B (en) | 2015-12-02 | 2015-12-02 | The method that a kind of pair of cast iron cooker is surface-treated |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710501678.1A CN107245562B (en) | 2015-12-02 | 2015-12-02 | The method that a kind of pair of cast iron cooker is surface-treated |
| CN201510875545.1A CN105463169B (en) | 2015-12-02 | 2015-12-02 | A kind of method being surface-treated to cast iron cooker and cast iron cooker |
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| CN201510875545.1A Division CN105463169B (en) | 2015-12-02 | 2015-12-02 | A kind of method being surface-treated to cast iron cooker and cast iron cooker |
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| CN201510875545.1A Active CN105463169B (en) | 2015-12-02 | 2015-12-02 | A kind of method being surface-treated to cast iron cooker and cast iron cooker |
| CN201710501697.4A Active CN107254574B (en) | 2015-12-02 | 2015-12-02 | The method that a kind of pair of cast iron cooker is surface-treated |
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| CN107321929B (en) * | 2017-06-29 | 2019-07-23 | 河北淘啊科技有限公司 | A kind of casting iron pan production technology |
| CN107574403B (en) * | 2017-09-13 | 2019-04-16 | 佛山市高明福煌五金制品实业有限公司 | A kind of process of surface treatment of cast iron |
| CN108103291A (en) * | 2017-12-07 | 2018-06-01 | 中国科学院金属研究所 | A kind of anti-corrosion treatment process of cast-iron electric-cooker inner container |
| CN108456877A (en) * | 2018-03-09 | 2018-08-28 | 广州渡和堂文化有限公司 | A kind of surface treatment method of iron pot |
| CN111321404A (en) * | 2020-03-21 | 2020-06-23 | 邢台戈兰厨具有限公司 | Cooker and method for forming golden protective layer on cooker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068861A (en) * | 1992-07-06 | 1993-02-10 | 宋兆光 | The processing method of the antirust processing of iron pan |
| CN103239139A (en) * | 2013-05-06 | 2013-08-14 | 三穗宏立厨具有限公司 | Rare earth alloy iron pan and production method thereof |
| JP2015160971A (en) * | 2014-02-26 | 2015-09-07 | 及源鋳造株式会社 | Surface treatment method of cast iron product, and cast iron product |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257685A (en) * | 1998-12-18 | 2000-06-28 | 陈邦仪 | Ferroselenium pot and its making technology |
| UA68163U (en) * | 2011-12-20 | 2012-03-12 | Юрий Николаевич Згибнев | Method for producing cast-iron dishware |
-
2015
- 2015-12-02 CN CN201710501678.1A patent/CN107245562B/en active Active
- 2015-12-02 CN CN201510875545.1A patent/CN105463169B/en active Active
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068861A (en) * | 1992-07-06 | 1993-02-10 | 宋兆光 | The processing method of the antirust processing of iron pan |
| CN103239139A (en) * | 2013-05-06 | 2013-08-14 | 三穗宏立厨具有限公司 | Rare earth alloy iron pan and production method thereof |
| JP2015160971A (en) * | 2014-02-26 | 2015-09-07 | 及源鋳造株式会社 | Surface treatment method of cast iron product, and cast iron product |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107254574B (en) | 2019-02-15 |
| CN107245562A (en) | 2017-10-13 |
| CN105463169B (en) | 2017-09-15 |
| CN105463169A (en) | 2016-04-06 |
| CN107254574A (en) | 2017-10-17 |
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