CN105506536B - A kind of resistance to etching technique of carbon steel frying pan - Google Patents
A kind of resistance to etching technique of carbon steel frying pan Download PDFInfo
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- CN105506536B CN105506536B CN201410505606.0A CN201410505606A CN105506536B CN 105506536 B CN105506536 B CN 105506536B CN 201410505606 A CN201410505606 A CN 201410505606A CN 105506536 B CN105506536 B CN 105506536B
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- etching technique
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Abstract
The invention discloses a kind of resistance to etching technique of carbon steel frying pan, belong to the corrosion and protection technical field of metal material.The technique carries out sanding processing to stamping forming carbon steel frying pan blank inner surface first, and it is uniformly bright and clean then to reach frying pan blank inner surface by blasting treatment；Again via nitride processing and Darkening process after, by frying pan 50~80 DEG C concentration be 2~20wt.% aqueous sodium persulfate solutions in soak 0.5~2 hour, frying pan taking-up after after washing and drying, obtain frying pan finished product.Carbon steel frying pan intensity and corrosion resisting property after the PROCESS FOR TREATMENT significantly improve, and are tested through 5wt.% salt solution or ferric chloride solution immersion corrosion, salt solution or ferric chloride solution are limpid in 200 hours, without rust.
Description
Technical field
The present invention relates to the corrosion and protection technical field of metal material, and in particular to a kind of resistance to etching technique of carbon steel frying pan.
Background technology
Carbon steel refers to that phosphorus content is less than 2.11% and does not contain the steel for the alloying element being intentionally added.The performance of carbon steel can be with
Meet the requirement of general part and instrument, and price is low, yield is big.But ordinary carbon steel corrosion resistance is poor, and the table of carbon steel
Face is handled plays particularly important effect to the quality of its antiseptic property.At present, typically passed through from the frying pan of ordinary carbon steel material
Nitridation is crossed with frying pan finished product is made after Darkening process.
Nitrogen treatment refers to the thermo-chemical treatment work for making nitrogen-atoms penetrate into workpiece surface in certain medium at a certain temperature
Skill.The product of via nitride processing has excellent wearability, fatigue durability, corrosion resistance and resistant to elevated temperatures characteristic.Most of part,
Can be gone using gas oil process deoil after nitriding at once.Part be also required to be cleaned with gasoline it is relatively good, but before nitriding it
Last processing method is according to polishing, grinding, polishing etc., it is possible to the superficial layer for hindering nitriding is produced, after causing nitriding, and nitridation
The defects of layer is uneven or bends.The existing frequently-used method of Darkening process for alkalescence heating black, hair blackening liquid it is main into
It is sodium hydroxide and natrium nitrosum to divide, and nigrescence temperature is typically between 135-155 DEG C；Processing step：1) clean；2) degreasing：Work
Part must be fully immersed in degreaser；Degreaser concentration pH value 12-14, processing time 5-15min, often spend 3-5 minutes and tremble up and down
Move several times, liquor strength supplements skimmed milk when being less than pH value 12；3) wash；4) pickling：Pickle concentration pH value 2-4, during processing
Between 5-10min；5) wash；6) black：Pond liquid concentration pH value 2.5-3.5, processing time, 5-10min boiled；7) wash；8) blow
It is dry.
Although via nitride is improved to some extent with the carbon steel frying pan corrosion resistance after Darkening process, but through 5% salt water logging
Corrosion experiment is steeped, still no more than 25 hours, therefore has many points for attention and drawback during use, such as：Cleaned in time after use,
Avoid cleaning in high temperature, it is yielding etc..
The content of the invention
The problem of in order to overcome corrosion resistance difference existing for existing carbon steel frying pan, the present invention provide a kind of anti-corrosion work of carbon steel frying pan
Skill, carbon steel frying pan intensity and corrosion resisting property after the PROCESS FOR TREATMENT significantly improve, and are soaked through 5wt.% salt solution or ferric chloride solution
Corrosion experiment is steeped, can be more than 200 hours.
To achieve the above object, the technical scheme is that：
A kind of resistance to etching technique of carbon steel frying pan, the technique comprise the following steps：
(1) sanding processing is carried out with 100 granularity flap wheels to stamping forming carbon steel frying pan blank inner surface, fried with removing
The rusty stain and impurity of pot inner surface；
(2) blasting treatment is carried out to frying pan inner surface：Under 6 atmospheric pressures, 10 are handled with 80 mesh quartz sands first
~15 minutes, then handled 10~15 minutes with 100 mesh quartz sands；The step reach frying pan inner surface it is uniform while (surface
Grain size diminishes), additionally it is possible to the nitride thickness and hardness of oxidation processes are improved, and reduces nitrogen treatment temperature.
(3) nitrogen treatment：400~500 DEG C of nitrogen treatment temperature；Nitrogen treatment detailed process is：Will be after blasting treatment
Frying pan be placed in nitriding furnace, by NH3Gas is directly input into 400~500 DEG C of nitriding furnace, is kept for 10~30 hours, is made NH3Gas
Be decomposed into (N) gas of state of atom and (H) gas and carry out Nitrizing Treatment so that the surface of carbon steel produce it is wear-resisting and corrosion resistant
Nitrogen containing compound layer, its thickness are 0.03~0.04mm, hardness Hv1500~1800.
(4) Darkening process：Darkening process uses alkaline blackening processing technology, and the composition of hair blackening liquid is sodium hydroxide and nitrous
Sour sodium, hair blackening liquid pH value are 2.5~3.5,5~10min of processing time.
(5) immersion treatment：Frying pan is heated to 100~300 DEG C, is then immersed in 50~80 DEG C of concentration 2~20wt.% sulphur
In acid sodium aqueous solution, soak time 0.5~2 hour.
(6) the frying pan taking-up after step (5) immersion treatment is rinsed with water, and carbon steel frying pan finished product is produced after drying.
The invention has the advantages that and beneficial effect：
1st, the present invention is carried out at sanding processing progress sanding to carbon steel frying pan blank inner surface with 100 granularity flap wheels first
Reason, remove the oxide-film and impurity of frying pan inner surface；Then handled successively with 80 mesh and 100 mesh quartz sands, make frying pan inner surface
It is uniform to reach surface, while improves frying pan inner surface intensity and improves corrosion resistance, the frying pan inner surface after blasting treatment is presented
Matt phenomenon.After surface sand-blasting process, additionally it is possible to improve the nitride thickness and hardness of next step oxidation processes, and reduce nitrogen
Change treatment temperature.After nitrogen treatment, frying pan again after Darkening process and immersion treatment further improve frying pan inner surface intensity and
Corrosion resistance.
2nd, the carbon steel frying pan after present invention process processing, is tested, 200 through 5wt.% salt solution or ferric chloride solution immersion corrosion
Solution is limpid in hour, without rust.
Brief description of the drawings
Fig. 1 is the frying pan of the preparation of embodiment 1 through 100 hours immersion corrosion experimental results.
Fig. 2 is the frying pan of the preparation of embodiment 2 through 160 hours immersion corrosion experimental results.
Fig. 3 is the frying pan of the preparation of embodiment 1 through 360 hours immersion corrosion experimental results.
Fig. 4 is the frying pan of the preparation of comparative example 1 through 160 hours immersion corrosion experimental results.
Fig. 5 is the frying pan of the preparation of comparative example 1 through 360 hours immersion corrosion experimental results.
Embodiment
The present invention is described in detail below in conjunction with drawings and Examples.
Darkening process described in following examples and comparative example uses conventional alkaline blackening processing technology, hair blackening liquid it is main
Composition is sodium hydroxide and natrium nitrosum, and nigrescence temperature is between 135~155 DEG C；Detailed process is：(1) workpiece cleaning is laggard
Row ungrease treatment, skimming processes：Workpiece is completely immersed in degreaser；Degreaser concentration pH value 12~14, processing time 5~
15min, often cross shake in about 3~5 minutes several times, liquor strength supplements skimmed milk when being less than pH12；(2) wash；(3) pickling：
Pickle concentration pH value 2~4,5~10min of processing time；(4) wash；(5) black：Pond liquid concentration pH value 2.5~3.5, processing
Time, 5~10min boiled；(6) wash and dry up.
The nitrogen treatment process is：Frying pan is placed in nitriding furnace, by NH3Gas is directly input into the nitriding furnace of certain temperature
Interior carry out Nitrizing Treatment, 10~30 hours processing times.
Embodiment 1
The present embodiment prepares carbon steel frying pan by raw material of Q235 carbon steels, and detailed process is as follows：
(1) carbon steel punch forming, sanding processing is carried out to the carbon steel frying pan blank inner surface after punch forming, removes frying pan
The rusty stain and impurity of inner surface；
(2) blasting treatment is carried out to frying pan inner surface：Under 6 atmospheric pressures, (3) nitrogen treatment：Nitrogen treatment temperature
400 DEG C of degree, nitrogen containing compound layer caused by frying pan inner surface, its thickness are 0.035mm, and hardness Hv is 1700.
(4) Darkening process；
(5) immersion treatment：Frying pan is heated to 200 DEG C, is then immersed in 80 DEG C of concentration 5wt.% aqueous sodium persulfate solutions,
Soak time 30min.
(6) the frying pan taking-up after step (5) immersion treatment is rinsed with water, and carbon steel frying pan finished product is produced after drying.
Comparative example 1
This example is existing carbon steel frying pan preparation technology, is using Q235 carbon steels as raw material, detailed process is as follows：
(1) carbon steel punch forming, sanding processing is carried out to the carbon steel frying pan blank inner surface after punch forming, removes frying pan
The rusty stain and impurity of inner surface；
(2) nitrogen treatment：600 DEG C of nitrogen treatment temperature, nitrogen containing compound layer caused by frying pan inner surface, its thickness are
0.02mm, hardness Hv are 1300.
(3) Darkening process；
(4) the frying pan taking-up after Darkening process is rinsed with water, and carbon steel frying pan finished product is produced after drying.
Embodiment 2
The present embodiment prepares carbon steel frying pan by raw material of Q235 carbon steels, and detailed process is as follows：
(1) carbon steel punch forming, sanding processing is carried out to the carbon steel frying pan blank inner surface after punch forming, removes frying pan
The rusty stain and impurity of inner surface；
(2) blasting treatment is carried out to frying pan inner surface：Under 6 atmospheric pressures, 15 are handled with 80 mesh quartz sands first
Minute, then handled 15 minutes with 100 mesh quartz sands, it is uniform to reach surface；
(3) nitrogen treatment：480 DEG C of nitrogen treatment temperature, nitrogen containing compound layer caused by frying pan inner surface, its thickness are
0.04mm, hardness Hv are 1800.
(4) Darkening process；
(5) immersion treatment：Frying pan is heated to 250 DEG C, is then immersed in 50 DEG C of concentration 18wt.% aqueous sodium persulfate solutions
In, soak time 1 hour.
(6) the frying pan taking-up after step (5) immersion treatment is rinsed with water, and carbon steel frying pan finished product is produced after drying.
Above-described embodiment 1-2 and comparative example the carbon steel frying pan prepared are subjected to immersion corrosion experiment, i.e., by frying pan in room temperature
Immersion treatment in the 5wt.% NaCl aqueous solution.Test result indicates that the frying pan prepared using present invention process is in 200 hours
Soak non-corroding phenomenon and (immersion of embodiment 1 100 hours, such as Fig. 1 occur；Embodiment 2 is soaked 160 hours, such as Fig. 2), it is small through 360
When immersion there is slight rusty stain (Fig. 3)；And it is obvious to use frying pan prepared by existing process (comparative example 1) to occur through 160 hours
Rusty stain (Fig. 4), 36 hours serious corrosions (Fig. 5).By frying pan in room temperature 5wt.% ferric chloride in aqueous solution immersion treatment, gained
Experimental result is identical with the above-mentioned NaCl aqueous solution.
Claims (5)
- A kind of 1. resistance to etching technique of carbon steel frying pan, it is characterised in that：The technique comprises the following steps：(1) sanding processing is carried out to stamping forming carbon steel frying pan blank inner surface, to remove the rusty stain of frying pan inner surface and miscellaneous Matter；(2) blasting treatment is carried out to frying pan inner surface：Under 6 atmospheric pressures, 10~15 are handled with 80 mesh quartz sands first Minute, then handled 10~15 minutes with 100 mesh quartz sands；(3) nitrogen treatment：400~500 DEG C of nitrogen treatment temperature；(4) Darkening process；(5) immersion treatment：Frying pan is heated to 100~300 DEG C, is then immersed in 50~80 DEG C of concentration 2~20wt.% sodium sulphate In the aqueous solution, soak time 0.5~2 hour；(6) the frying pan taking-up after step (5) immersion treatment is rinsed with water, and frying pan finished product is produced after drying.
- 2. the resistance to etching technique of carbon steel frying pan according to claim 1, it is characterised in that：100 granularity emery cloths are used in step (1) Wheel carries out sanding processing.
- 3. the resistance to etching technique of carbon steel frying pan according to claim 1, it is characterised in that：Step (3) nitrogen treatment process is：Will Frying pan after blasting treatment is placed in nitriding furnace, by NH3Gas is directly input into 400~500 DEG C of nitriding furnace and carried out at nitriding Reason, 10~30 hours processing times.
- 4. the resistance to etching technique of carbon steel frying pan according to claim 3, it is characterised in that：In step (3), carbon steel after nitrogen treatment Inner surface produces nitrogen containing compound layer, and its thickness is 0.03~0.04mm, hardness Hv 1500~1800.
- 5. the resistance to etching technique of carbon steel frying pan according to claim 1, it is characterised in that：In step (4), Darkening process uses alkali Property blackening processing technology, the composition of hair blackening liquid is sodium hydroxide and natrium nitrosum, and hair blackening liquid pH value is 2.5~3.5, processing time 5~10min.
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| CN201410505606.0A CN105506536B (en) | 2014-09-26 | 2014-09-26 | A kind of resistance to etching technique of carbon steel frying pan |
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| CN201410505606.0A CN105506536B (en) | 2014-09-26 | 2014-09-26 | A kind of resistance to etching technique of carbon steel frying pan |
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| CN105506536B true CN105506536B (en) | 2017-12-15 |
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| CN106191654B (en) * | 2016-08-16 | 2018-07-17 | 武汉钢铁有限公司 | A kind of economical abrasive is anti-corrosion iron ware and preparation method |
| 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 |
| CN112458396B (en) * | 2020-11-30 | 2021-09-24 | 中国科学院金属研究所 | Surface treatment process of non-stick, perforation-resistant and high-thermal-conductivity uncoated carbon steel frying pan |
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| CN102151075A (en) * | 2011-03-17 | 2011-08-17 | 钱远强 | Non-sticky nonrust iron pan and manufacturing method thereof |
| CN103300706A (en) * | 2013-06-20 | 2013-09-18 | 常熟金浩机械有限公司 | Manufacturing method of high-performance wok |
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