CN107058894A - A kind of kitchen tools cold-rolled steel sheet and its preparation technology - Google Patents
A kind of kitchen tools cold-rolled steel sheet and its preparation technology Download PDFInfo
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- CN107058894A CN107058894A CN201611141732.8A CN201611141732A CN107058894A CN 107058894 A CN107058894 A CN 107058894A CN 201611141732 A CN201611141732 A CN 201611141732A CN 107058894 A CN107058894 A CN 107058894A
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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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The kitchen tools cold-rolling deep-punching steel plate of the present invention, using C, Si, Mn, Cu, Ni, Cr, Mo, Ti composition design, the present invention uses converter smelting, the technique productions such as LF+RH external refinings, sheet billet continuous casting, hot rolling, pickling, cold rolling, annealing, smooth, yield strength≤260MPa, the 410MPa of tensile strength 270, elongation percentage >=35%.Cold-rolled steel sheet produced by the present invention is suitable to processing and manufacturing of the kitchen tools with refined iron pan, and the iron pan of processing has excellent resistance to pitting performance and rustless property.
Description
Technical field
The present invention relates to technical field of metal material manufacture, more particularly to a kind of kitchen tools deep punching cold-rolling steel sheet and its system
Make method.
Background technology
With the development of society, Modern Family's culinary art is changed from traditional iron pan (casting iron pan) to steel iron pan.Non-stick cooker is near
Quickly grown over year, but because non-stick pan top layer usually contains the chemical substance of carbon tetrafluoride etc, this kind of chemical substance may
Liver is injured, influence is grown, in some instances it may even be possible to carcinogenic.This kind of chemical substance of studies have shown that may cause women to enter in advance
Climacteric.During with non-stick cooker cooking, carbon tetrafluoride becomes gaseous volatilization and come out at high temperature, and as the oil smoke cooked is by human body
Suction.In addition, Stickless pan surface is scraped by scoop, carbon tetrafluoride can be dropped in food and directly eaten by people.Conventional iron
Pot is without this chemical substance coating, therefore this harm without non-stick pan.In addition, a small amount of ferro element under high temperature in iron pan
It can penetrate into food, therefore in the effect for objectively serving benefit iron.But traditional iron pan is easy to get rusty in use,
Although the di-iron trioxide of generation can mend iron, also there is certain harm to human body, while food of the manganese of dissolving to culinary art
Safety produces threat.
Consider the deficiency that traditional cast iron pot and non-stick pan are present, play steel iron pan thinner thickness, it is lightweight excellent
Gesture, kitchen tools industry has carried out long felt to the raw material and manufacturing process of steel iron pan, main to include using mild steel
St14 (SPCE, SPCF) of St12 (SPCC) and ultra-low-carbon steel etc., steel plate carries out what Nitrizing Treatment was made after spinning or punching press
The advantage that iron pan inherits traditional iron pan overcomes the shortcoming of traditional iron pan again, is difficult to get rusty simultaneously and has trace iron to fuse reality
In thing.But it is due to the influence of the actual service conditions of raw material and manufacturing process and Chinese family, such iron pan is occurred in that
Occurs the problem of pitting and corrosion within a short period of time, the strong influence application of refined iron pan.
The content of the invention
The present invention provides a kind of kitchen tools deep punching cold-rolling steel sheet and its manufacture method aiming at above-mentioned defect.
Using C, Si, Mn, Cu, Ni, Cr, Mo, Ti composition design, using converter smelting, external refining, sheet billet continuous casting, hot rolling, pickling,
The technique productions, yield strength≤260MPa, tensile strength 270-410MPa, elongation percentage >=35% such as cold rolling, annealing, smooth.Should
The iron pan that steel plate is made after the process such as punching press or rotary pressing processing, Nitrizing Treatment, polishing have excellent resistance to pitting performance and
Rustless property.
A kind of kitchen tools of the present invention are that a kind of kitchen tools are cold with deep-draw with deep punching cold-rolling steel sheet and its manufacture method technical scheme
Rolled steel plate is made up of following component by weight percentage：0.001~0.010%C, Si≤0.10%, 0.05~0.30%
Mn, P≤0.08%, S≤0.020%, 0.01~0.07%Alt, 0.002~0.007%N, 0.10~0.50%Cu, 0.10~
0.30%Ni, 0.10~0.50%Cr, 0.005~0.20%Mo, 0.04-0.10%Ti, surplus are iron and inevitably miscellaneous
Matter.
Cold-rolled steel sheet as described above：Pb≤0.004%, Cd≤0.004%, As≤0.004%, Zn≤0.004%.The steel
The iron pan that plate is made after the process such as punching press or rotary pressing processing, Nitrizing Treatment, polishing has excellent resistance to pitting performance and anti-
Rust performance.
The iron pan being processed into above-mentioned steel plate and method meets following requirements：
1) 15%NaCL solution boils 10 hours+immersion 48 hours, does not occur pitting, iron pan ne-leakage phenomenon.
2) 5%NaCl solution soaks 30 days, does not occur pitting, iron pan ne-leakage phenomenon.
3) 5%NaCL solution is boiled 1.5 hours, iron pan non-corroding phenomenon.
Next, being illustrated to the nitrogen treatment of the present invention with the restriction reason of the chemical composition of steel plate.Hereinafter, do not having
In the case of having special instruction, refer to quality % as the % of the unit of component element content.
C：Carbon is reduced to 0.001% and industrially significantly damages economy, therefore addition more than 0.001%, while carbon
It is to influence the essential element of deep drawability, deep drawability is reduced as its content is improved.If carbon content is high, work as addition
Deep drawability is set further to deteriorate during other elements, so carbon content is less than 0.01%, therefore C of the present invention：0.001~
0.010%.
Mn：Manganese is a kind of deoxidant element, while strengthen steel by solution strengthening, the industry when content is less than 0.05%
It is uneconomical in production, therefore lower limit is limited as 0.05%；When content is higher than 0.30%, deep drawability declines, therefore the present invention
Mn：0.05~0.30%.
Si：It is the effective element of deoxidation to steel, it may have the effect that steel is strengthened is made by solution strengthening.In order to obtain this
A little effects, Si contents are preferably more than 0.01%.But, difficult fissility rust is generated if Si contents are more than 0.1%, during hot rolling
And the surface texture of steel plate is substantially deteriorated.Therefore, Si contents are less than 0.1%, preferably less than 0.05%.
P：Phosphorus is a kind of element for strengthening steel strength without weakening deep drawability, can be fitted according to the requirement of the varying strength of steel
Amount addition, but P easily causes segregation in steel, is also easy to secondary operation hardening occur when the content is higher, considers above-mentioned shadow
The factor of sound, the present invention limits the P upper limit as 0.08%.
S：It is main in steel to exist in the form of sulphide inculsion, decline the formability particularly deep drawability of steel, because
This, preferably reduces S as far as possible, but can allow to 0.020%, therefore the present invention limits the S upper limit as 0.020%.In addition, excellent
Elect less than 0.010% as.
Cu：The acid resistance of steel can be improved, in order to obtain these effects, Cu additions 0.10% above is effective, the opposing party
Face addition more than 0.50% is uneconomical, deep drawability declines and surface quality reduction, therefore restriction scope 0.10-0.50%,
It is preferred that 0.20-0.40%.
Ni：The acid resistance of steel can be improved, while fire check caused by Cu addition can be prevented possible, in order to obtain these effects
Really, Ni additions 0.10% are above is effective, while content improves effect gradually saturation and uneconomical, therefore Ni of the present invention restrictions
For 0.10-0.30%, more preferably 0.10-Cu% × 0.5.
Cr：Chromium has the effect for forming nitride in steel by nitrogen treatment and improving the hardness of steel plate skin section, is
Important alloying element in the present invention, in order to obtain the effect above, it is necessary to make Cr contents be more than 0.1%, with Cr contents
Improving the effect further increases, on the other hand, if Cr contents are more than 0.5%, and the deep drawability of steel plate declines and cost increases
Plus, therefore the present invention limits Cr contents as 0.10-0.50%.
N：It is the element existed as impurity in steel.Substantial amounts of N not only reduces the formability of steel plate, therefore preferably
Reduce as far as possible, but N content be less than 0.002% when industrial production on it is uneconomical, therefore the present invention limit N content：0.002-
0.007%.
Al：It is the deoxidant element of steel.When Alt contents in steel are less than 0.01%, it is impossible to obtain sufficient deoxidation effect.Separately
On the one hand, if the Al content in steel is more than 0.07%, not only deoxidation effect saturation, and by the increase of the field trash in steel
Cause internal flaw and the increased possibility increase of surface defect.Therefore, the present invention limit Al content as：0.01-0.07%, it is excellent
Elect 0.02-0.06% as.
Ti：Carbonitride-forming elements, can fix C, N interstitial atom of steel grade, and Ti is first tied before purification C with N, S
Conjunction forms TiN, TiS, then combines to form TiC with C, according to the economy in C, N, S of the present invention selection and industrial production, Ti
Content at least adds more than 0.04%, on the other hand, and excessive Ti not only makes cost increase but also is that solid solution Ti amounts increase so that
Recrystallization temperature is improved, and the deep drawability and surface quality to product are all unfavorable.
Mo：Improve the quenching degree of steel and make the increased effect of armor plate strength, while the steel grade in addition Cu is acidproof with making
Property improve effect, to reach that the effect above need to add more than 0.005%；On the other hand, being excessively added for Mo improves intensity
Deep drawability declines and cost is raised, therefore the present invention limits Mo contents as 0.005-0.20%, preferably 0.005-0.10%.
Surplus beyond mentioned component is Fe and inevitable impurity.It should be noted that the deep-draw of the present invention is cold rolling
Steel plate is limited following elements with reference to its purposes：Pb≤0.004%, Cd≤0.004%, As≤0.004%, Zn≤
0.004%.
The steel plate of the present invention is on the basis of above-mentioned Design of Chemical Composition, using converter or electric furnace smelting, external refining, slab
Continuous casting, hot rolling, pickling, cold rolling, annealing, the technique productions such as smooth and obtain.
The smelting of the steel used in the present invention can use any of smelting process, smelting known to converter, electric furnace etc.
Continuous casting billet is made by continuously casting etc. in the steel of refining.It should be noted that various pretreatments, secondary fine can be implemented as needed
Refining, surfacing of steel raw material etc..
The heating-up temperature of continuous casting billet：1050℃-1250℃.
When the heating-up temperature of continuous casting billet is less than 1050 DEG C, desired final rolling temperature is difficult to ensure that in hot rolling.On the other hand,
If the heating-up temperature of continuous casting billet is more than 1250 DEG C, the energy required for heating is not only increased, is also easy to produce steel plate table
The unfavorable condition of face character.Therefore, the heating-up temperature of the steel raw material before hot rolling be 1050 DEG C -1250 DEG C, preferably 1100 DEG C -
1250℃。
It should be noted that for the heating of continuous casting billet, the continuous casting billet for being cooled to normal temperature can be reheated,
The continuous casting billet in cooling procedure can also be carried out adding heating or is incubated after casting.
In the present invention, continuous casting billet is heated to after said temperature scope implementing roughing and finish rolling, roughing condition can be by
According to usual method, it is not necessary that be particularly limited to.
Final rolling temperature：860℃-960℃.
If the final rolling temperature in hot-rolled process is less than 860 DEG C, the iron being elongated for non-recrystallization occur is easily caused
Ferritic crystal grain, and the deep drawability reduction of steel plate.In addition, the intra-face anisotropy increase of steel plate.On the other hand, if finish rolling
Temperature is more than 960 DEG C, then the surface texture for being not only easily caused steel plate is deteriorated, and hot rolled ferrite tissue easily becomes thick
Greatly, cold rolled annealed recrystallized structure is also thick.Therefore, final rolling temperature is 860 DEG C -960 DEG C, preferably 880 DEG C -940 DEG C.Need
Illustrate, in order to ensure necessary final rolling temperature, the heaters such as baffle heater or strip edge heater can be used to rolling
Steel plate in system carries out adding heating.
Requirement, such as section cooling can be met using conventional cooling and coiling technique, oiler temperature control is at 600 DEG C
And above to ensure the deep drawability of cold-rolled steel sheet, it is considered to pickling and the influence of surface of cold-rolled steel plate character, coiling temperature is not
Preferably more than 750 DEG C.
For ensure cold-rolled steel sheet the cold rolling reduction ratio of deep drawability preferably control more than 50%, be preferably controlled in 70% with
On, it is considered to mill load and rollability, cold rolling reduction ratio are preferably controlled below 85%.
Steel plate after cold rolling can be produced using bell-type annealing or continuous annealing mode, although not limiting annealing way,
But annealing temperature is more than recrystallization temperature and avoids result in ferrite crystal grain thick 900 DEG C and following.Steel plate after annealing
Skin pass rolling is carried out, is controlled for the smooth reduction ratio of deep drawability of guarantee steel plate in 0.5-1.5%.
The iron pan kitchen tools deep punching cold-rolling steel sheet being made up of the above method passes through punching press or rotary pressing processing, Nitrizing Treatment, beaten
The iron pan that mill etc. is made after process has excellent resistance to pitting performance and rustless property.
The beneficial effects of the present invention are：The invention discloses a kind of kitchen tools deep punching cold-rolling steel sheet and its manufacture method.
The present invention uses converter or electric furnace smelting, the technique life such as external refining, sheet billet continuous casting, hot rolling, pickling, cold rolling, annealing, smooth
Production, yield strength≤260MPa, tensile strength 270-410MPa, elongation percentage >=35%.Deep punching cold-rolling steel sheet produced by the present invention
Suitable for processing and manufacturing of the kitchen tools with refined iron pan, the steel plate is made after the process such as punching press or rotary pressing processing, Nitrizing Treatment, polishing
Into iron pan there is excellent resistance to pitting performance and rustless property.The iron pan of processing has excellent resistance to pitting performance and rust-preventing characteristic
Energy.The iron pan being processed into meets following requirements：
1) 15%NaCL solution boils 10 hours+immersion 48 hours, does not occur pitting, iron pan ne-leakage phenomenon.
2) 5%NaCl solution soaks 30 days, does not occur pitting, iron pan ne-leakage phenomenon.
3) 5%NaCL solution is boiled 1.5 hours, iron pan non-corroding phenomenon.
The market demand is fully met with iron pan using the kitchen tools of the steel plate processing of the present invention, there is steel plate excellent deep-draw to add
Work performance, nitrogen-hardening performance and resistance to pitting performance.
Embodiment：
For a better understanding of the present invention, technical scheme is described in detail with instantiation below, but originally
Invention is not limited thereto.
Embodiment 1
A kind of iron pan kitchen tools deep punching cold-rolling steel sheet, its chemical composition is shown in Table 1.
A kind of manufacture method of iron pan kitchen tools deep punching cold-rolling steel sheet, including molten iron pretreatment-converter smelting-LF-
RH-continuous casting-hot continuous rolling-pickling-cold rolling-annealing-smooth.Production technology is：Slab thickness 135mm, heating-up temperature
1250 DEG C, soaking time 2h, 930 DEG C of finishing temperature, coiling temperature is 720 DEG C, hot rolled steel plate finished product thickness 5mm；Cold-rolled steel sheet
Thickness is 1.8mm, 740 DEG C of bell-type annealing temperature, smooth reduction ratio 1.2%.
The iron pan that the steel plate is made after the process such as punching press or rotary pressing processing, Nitrizing Treatment, polishing has excellent resistance to
Pitting performance and rustless property.The iron pan of processing has excellent resistance to pitting performance and rustless property.The iron pan being processed into is met
It is following to require：
1) 15%NaCL solution boils 10 hours+immersion 48 hours, does not occur pitting, iron pan ne-leakage phenomenon.
2) 5%NaCl solution soaks 30 days, does not occur pitting, iron pan ne-leakage phenomenon.
3) 5%NaCL solution is boiled 1.5 hours, iron pan non-corroding phenomenon.
Embodiment 2
A kind of iron pan kitchen tools deep punching cold-rolling steel sheet, its chemical composition is shown in Table 1.
A kind of manufacture method of iron pan kitchen tools deep punching cold-rolling steel sheet, including molten iron pretreatment-converter smelting-LF-
RH-continuous casting-hot continuous rolling-pickling-cold rolling-annealing-smooth.Production technology is：Slab thickness 135mm, heating-up temperature
1230 DEG C, soaking time 2h, 920 DEG C of finishing temperature, coiling temperature is 710 DEG C, hot rolled steel plate finished product thickness 5mm；Cold-rolled steel sheet
Thickness is 1.5mm, 730 DEG C of bell-type annealing temperature, smooth reduction ratio 0.9%.
The iron pan that the steel plate is made after the process such as punching press or rotary pressing processing, Nitrizing Treatment, polishing has excellent resistance to
Pitting performance and rustless property.The iron pan of processing has excellent resistance to pitting performance and rustless property.The iron pan being processed into is met
It is following to require：
1) 15%NaCL solution boils 10 hours+immersion 48 hours, does not occur pitting, iron pan ne-leakage phenomenon.
2) 5%NaCl solution soaks 30 days, does not occur pitting, iron pan ne-leakage phenomenon.
3) 5%NaCL solution is boiled 1.5 hours, iron pan non-corroding phenomenon.
Embodiment 3
A kind of iron pan kitchen tools deep punching cold-rolling steel sheet, its chemical composition is shown in Table 1.
A kind of manufacture method of iron pan kitchen tools deep punching cold-rolling steel sheet, including molten iron pretreatment-converter smelting-LF-
RH-continuous casting-hot continuous rolling-pickling-cold rolling-annealing-smooth.Production technology is：Slab thickness 150mm, heating-up temperature
1200 DEG C, soaking time 2.5h, 910 DEG C of finishing temperature, coiling temperature is 700 DEG C, hot rolled steel plate finished product thickness 4mm；Cold-rolled steel
Plate thickness is 1.2mm, 730 DEG C of bell-type annealing temperature, smooth reduction ratio 0.8%.
The iron pan that the steel plate is made after the process such as punching press or rotary pressing processing, Nitrizing Treatment, polishing has excellent resistance to
Pitting performance and rustless property.The iron pan of processing has excellent resistance to pitting performance and rustless property.The iron pan being processed into is met
It is following to require：
1) 15%NaCL solution boils 10 hours+immersion 48 hours, does not occur pitting, iron pan ne-leakage phenomenon.
2) 5%NaCl solution soaks 30 days, does not occur pitting, iron pan ne-leakage phenomenon.
3) 5%NaCL solution is boiled 1.5 hours, iron pan non-corroding phenomenon.
Embodiment 4
A kind of iron pan kitchen tools deep punching cold-rolling steel sheet, its chemical composition is shown in Table 1.
A kind of manufacture method of iron pan kitchen tools deep punching cold-rolling steel sheet, including molten iron pretreatment-converter smelting-LF-
RH-continuous casting-hot continuous rolling-pickling-cold rolling-annealing-smooth.Production technology is：Slab thickness 150mm, heating-up temperature
1180 DEG C, soaking time 2.5h, 890 DEG C of finishing temperature, coiling temperature is 680 DEG C, hot rolled steel plate finished product thickness 4mm；Cold-rolled steel
Plate thickness is 1.0mm, 720 DEG C of bell-type annealing temperature, smooth reduction ratio 0.7%.
The iron pan that the steel plate is made after the process such as punching press or rotary pressing processing, Nitrizing Treatment, polishing has excellent resistance to
Pitting performance and rustless property.The iron pan of processing has excellent resistance to pitting performance and rustless property.The iron pan being processed into is met
It is following to require：
1) 15%NaCL solution boils 10 hours+immersion 48 hours, does not occur pitting, iron pan ne-leakage phenomenon.
2) 5%NaCl solution soaks 30 days, does not occur pitting, iron pan ne-leakage phenomenon.
3) 5%NaCL solution is boiled 1.5 hours, iron pan non-corroding phenomenon.
Embodiment 5
A kind of iron pan kitchen tools deep punching cold-rolling steel sheet, its chemical composition is shown in Table 1.
A kind of manufacture method of iron pan kitchen tools deep punching cold-rolling steel sheet, including molten iron pretreatment-converter smelting-LF-
RH-continuous casting-hot continuous rolling-pickling-cold rolling-annealing-smooth.Production technology is：Slab thickness 200mm, heating-up temperature
1230 DEG C, soaking time 3h, 880 DEG C of finishing temperature, coiling temperature is 670 DEG C, hot rolled steel plate finished product thickness 4mm；Cold-rolled steel sheet
Thickness is 1.0mm, 720 DEG C of bell-type annealing temperature, smooth reduction ratio 0.8%.
The iron pan that the steel plate is made after the process such as punching press or rotary pressing processing, Nitrizing Treatment, polishing has excellent resistance to
Pitting performance and rustless property.The iron pan of processing has excellent resistance to pitting performance and rustless property.The iron pan being processed into is met
It is following to require：
1) 15%NaCL solution boils 10 hours+immersion 48 hours, does not occur pitting, iron pan ne-leakage phenomenon.
2) 5%NaCl solution soaks 30 days, does not occur pitting, iron pan ne-leakage phenomenon.
3) 5%NaCL solution is boiled 1.5 hours, iron pan non-corroding phenomenon.
The chemical composition of the embodiment of table 1
| Embodiment | C | Si | Mn | P | S | Al | Ti | Cu | Ni | Mo | Cr | N |
| 1 | 0.0028 | 0.05 | 0.15 | 0.059 | 0.004 | 0.033 | 0.056 | 0.43 | 0.25 | 0.07 | 0.46 | 0.0047 |
| 2 | 0.0039 | 0.03 | 0.10 | 0.017 | 0.002 | 0.048 | 0.068 | 0.35 | 0.18 | 0.05 | 0.33 | 0.0053 |
| 3 | 0.0058 | 0.02 | 0.08 | 0.013 | 0.003 | 0.041 | 0.059 | 0.28 | 0.17 | 0.03 | 0.26 | 0.0039 |
| 4 | 0.0064 | 0.04 | 0.27 | 0.008 | 0.002 | 0.033 | 0.072 | 0.19 | 0.11 | 0.01 | 0.17 | 0.0027 |
| 5 | 0.0075 | 0.05 | 0.12 | 0.022 | 0.002 | 0.030 | 0.083 | 0.15 | 0.10 | 0.03 | 0.28 | 0.0038 |
The deep punching cold-rolling steel sheet mechanical property of embodiment 1~5 is as shown in table 2.
The mechanical property of the embodiment of table 2
| Embodiment | Yield strength/MPa | Tensile strength/MPa | r90 | n90 | Elongation percentage % |
| 1 | 219 | 328 | 1.7 | 0.19 | 38 |
| 2 | 196 | 321 | 1.8 | 0.20 | 38.5 |
| 3 | 189 | 314 | 1.9 | 0.21 | 40 |
| 4 | 180 | 308 | 2.2 | 0.22 | 41.5 |
| 5 | 172 | 298 | 2.1 | 0.22 | 42 |
Note：Tensile test specimen scale distance is 80mm.
Claims (10)
1. a kind of kitchen tools deep punching cold-rolling steel sheet, it is characterised in that be made up of following component by weight percentage：0.001~
0.010%C, Si≤0.10%, 0.05~0.30%Mn, P≤0.08%, S≤0.020%, 0.01~0.07%Alt,
0.002~0.007%N, 0.10~0.50%Cu, 0.10~0.30%Ni, 0.10~0.50%Cr, 0.005~0.20%Mo,
0.04-0.10%Ti, surplus is iron and inevitable impurity.
2. a kind of kitchen tools deep punching cold-rolling steel sheet according to claim 1, it is characterised in that：Pb≤0.004%, Cd≤
0.004%th, As≤0.004%, Zn≤0.004%.
3. a kind of manufacture method of kitchen tools deep punching cold-rolling steel sheet as claimed in claim 1, it is characterised in that：Using converter or
Electric furnace smelting, including external refining, sheet billet continuous casting, hot rolling, pickling, cold rolling, annealing, flattening process.
4. a kind of manufacture method of kitchen tools deep punching cold-rolling steel sheet according to claim 3, it is characterised in that：Sheet billet continuous casting
After obtain continuous casting billet, implement roughing and finish rolling after continuous casting billet heating；The heating-up temperature of continuous casting billet：1050℃-1250℃.
5. a kind of manufacture method of kitchen tools deep punching cold-rolling steel sheet according to claim 4, it is characterised in that：Finish rolling temperature
Degree：The heating-up temperature of continuous casting billet：1100℃-1250℃.
6. a kind of manufacture method of kitchen tools deep punching cold-rolling steel sheet according to claim 4, it is characterised in that：Finish rolling temperature
Degree：860℃-960℃.
7. a kind of manufacture method of kitchen tools deep punching cold-rolling steel sheet according to claim 4, it is characterised in that：Finish rolling temperature
Degree：880℃-940℃.
8. a kind of manufacture method of kitchen tools deep punching cold-rolling steel sheet according to claim 4, it is characterised in that：After hot rolling,
Using cooling and coiling technique, coiling temperature is 600 DEG C -750 DEG C.
9. a kind of manufacture method of kitchen tools deep punching cold-rolling steel sheet according to claim 4, it is characterised in that：Under cold rolling
Rate 70%-85%.
10. a kind of manufacture method of kitchen tools deep punching cold-rolling steel sheet according to claim 4, it is characterised in that：Annealing temperature
Not higher than 900 DEG C of degree, smooth reduction ratio 0.5-1.5%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611141732.8A CN107058894A (en) | 2016-12-12 | 2016-12-12 | A kind of kitchen tools cold-rolled steel sheet and its preparation technology |
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| CN201611141732.8A CN107058894A (en) | 2016-12-12 | 2016-12-12 | A kind of kitchen tools cold-rolled steel sheet and its preparation technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756482A (en) * | 2016-12-12 | 2017-05-31 | 山东钢铁股份有限公司 | A kind of kitchen tools deep punching cold-rolling steel sheet and its manufacture method |
| CN111647822A (en) * | 2020-03-24 | 2020-09-11 | 本钢板材股份有限公司 | Steel applied to environment-friendly kitchen and preparation method thereof |
-
2016
- 2016-12-12 CN CN201611141732.8A patent/CN107058894A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756482A (en) * | 2016-12-12 | 2017-05-31 | 山东钢铁股份有限公司 | A kind of kitchen tools deep punching cold-rolling steel sheet and its manufacture method |
| CN111647822A (en) * | 2020-03-24 | 2020-09-11 | 本钢板材股份有限公司 | Steel applied to environment-friendly kitchen and preparation method thereof |
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Application publication date: 20170818 |