CN110284079A - A kind of new type stainless steel. corrosion resistance material preparation process that can be contacted with food - Google Patents
A kind of new type stainless steel. corrosion resistance material preparation process that can be contacted with food Download PDFInfo
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- CN110284079A CN110284079A CN201910685407.5A CN201910685407A CN110284079A CN 110284079 A CN110284079 A CN 110284079A CN 201910685407 A CN201910685407 A CN 201910685407A CN 110284079 A CN110284079 A CN 110284079A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
- C21C7/0685—Decarburising of stainless steel
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
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- 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
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- 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
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
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- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The invention discloses the new type stainless steel. corrosion resistance material preparation process that one kind can be contacted with food, are related to stainless steel manufacture technology field.Raw material including following composition: 50-60 parts of iron, 7-9 parts of copper, 3-5 parts of zinc, 1-3 parts of tin, 1-3 parts of chromium, 1-3 parts of titanium, 3-5 parts of nickel, 3-5 parts of aluminium, 2-4 parts of manganese, 1-2 parts of silicon, 1-3 parts of sulphur, 1-3 parts and carbon 0.03-0.05 parts of phosphorus.Copper is added in the material of stainless steel, since copper has graphitizing, so the corrosion resistance that can change stainless steel is added in mild steel in it, and tensile strength, harden ability can be improved and reduce ductility, and be added in stainless steel together with nickel, avoid the formation of copper brittleness, and under the action of copper, it so that stainless steel is provided with the ability of sterilization, can be contacted with food, and bacterium can be bred to avoid food.
Description
Technical field
The present invention relates to stainless steel manufacture technology field, specially a kind of novel stainless Steel material system that can be contacted with food
Standby technique.
Background technique
Stainless steel is the abbreviation of stainless acid resistant steel, the weak corrosive medium such as resistance to air, steam, water or the steel grade with rustless property
Referred to as stainless steel；And the steel grade of dielectric corrosion resistant to chemical etching is known as acid resisting steel.Due to difference of the two in chemical component
And keeping their corrosion resistance different, generally resistant to chemical media corrodes common stainless steel, and acid resisting steel is then generally with stainless
Property.One word of stainless steel not only refers to merely a kind of stainless steel, but indicates more than 100 kinds of industrial stainless steels, every kind developed
The stainless steel capital is with good performance in its specific application field.Successful key is purposes to be understood fully first, then again really
Fixed correct steel grade.Usually only six kinds of steel grade related with architectural construction application field, they all containing the chromium of 17-22%,
Preferable steel grade also contains nickel, and addition molybdenum can further improve the corrosion of atmospheric corrosiveness, the especially atmosphere of resistance to chloride.
Stainless steel is used in modern society by more and more fields, stainless steel is also being eaten due to its excellent characteristic
Conduct industry using more and more extensive, but current stainless steel material does not have the effect of sterilization also, because what is contacted with food
Stainless steel products is very more, and mostly with food Long Term Contact, as not strong in crossed sterilizing ability, bacterium constantly can breed and spread, right
The health and safety of food cause adverse effect.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides the novel stainless Steel materials that one kind can be contacted with food to prepare work
Skill, sterilizing function can be contacted with food and have many advantages, such as by having, and solve current stainless steel material and do not have sterilization
The problem of effect.
(2) technical solution
To realize that the above-mentioned purpose that can contact and have sterilizing function with food, the present invention provide following technical side
Case: the novel stainless Steel material that one kind can be contacted with food, the raw material including following composition: 50-60 parts of iron, 7-9 parts of copper, zinc
3-5 parts, 1-3 parts of tin, 1-3 parts of chromium, 1-3 parts of titanium, 3-5 parts of nickel, 3-5 parts of aluminium, 2-4 parts of manganese, 1-2 parts of silicon, 1-3 parts of sulphur, phosphorus 1-3
Part and carbon 0.03-0.05 parts.
A kind of new type stainless steel. corrosion resistance material preparation process that can be contacted with food, comprising the following steps:
S1, raw material and equipment are checked, determines that raw material proportioning is correct and equipment operation is normal；
S2, raw material iron is placed in smelting furnace and is heated, after increasing temperature to iron fusing 70-80%, other raw material are added
Enter and be stirred into iron liquid, forms molten steel；
S3, smelting furnace is vacuum-treated, vacuum degree is quickly dropped to 800-900 Pascal, started oxygen blast and force decarburization,
After having blown oxygen, vacuum degree is reduced within 6-8 minutes to 200-300 Pascal；
S4, the molten steel after decarburization is placed to ladle refining furnace progress LF refining, temperature is increased within 3-5 minutes
1700-1800 degrees Celsius, deoxidation treatment is carried out, the molten steel after deoxidation carries out tapping processing, and tapping temperature is 1600-1700
Degree Celsius；
S5, moulding by casting processing is carried out to the molten steel of tapping, pouring temperature is 1500-1600 degrees Celsius, forms stainless steel
Ingot casting；
S6, heat treatment diffusion annealing processing is carried out to stainless steel ingot casting, temperature is 1100-1200 degrees Celsius, time 2-3
Hour, be furnace-cooled to 400-500 degrees Celsius come out of the stove it is air-cooled；
S7, hot extrusion is carried out to stainless steel ingot casting, and squeezing temperature is 650-700 degrees Celsius, pressure 8-10
Megapascal (MPa), extrusion time are 2-4 hours；
S8, the stainless steel ingot casting after hot extrusion is carried out to recrystallization annealing processing, temperature is 600-700 degrees Celsius, the time
It is 70-90 minutes；
S9, at a temperature of progress heat of the stainless steel ingot casting after extruding at 300-500 degrees Celsius is handled for recrystallization annealing
Processing, time are 3-5 hours, are cooled to room temperature after being heat-treated, obtain finished product stainless steel material.
As a preferred technical solution of the present invention, in the S2, increasing the temperature that temperature to iron melts is 1600-
1700 degrees Celsius.
As a preferred technical solution of the present invention, in the S3, vacuum degree is quickly dropped to 800-900 Pascal
Time be 40-60 seconds.
As a preferred technical solution of the present invention, in the S4, the number for carrying out deoxidation treatment is 4-6 times.
As a preferred technical solution of the present invention, in the S6, air cooling time is 8-10 hours.
As a preferred technical solution of the present invention, in the S9, with the cooling of 80-100 DEG C/h after being heat-treated
Speed is cooled to room temperature.
(3) beneficial effect
Compared with prior art, the present invention provides the new type stainless steel. corrosion resistance material preparation process that can be contacted with food of one kind,
Have following the utility model has the advantages that copper is added in the material of stainless steel, since copper has graphitizing, so it is added in mild steel
Can change the corrosion resistance of stainless steel, and tensile strength, harden ability can be improved and reduce ductility, and with nickel one
It rises and is added in stainless steel, avoid the formation of copper brittleness, and under the action of copper, it, can be with so that stainless steel is provided with the ability of sterilization
It is contacted with food, and bacterium can be bred to avoid food.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Embodiment one:
A kind of novel stainless Steel material that can be contacted with food, the raw material including following composition: 50 parts of iron, 7 parts of copper, zinc
3 parts, 1 part of tin, 1 part of chromium, 1 part of titanium, 3 parts of nickel, 3 parts of aluminium, 2 parts of manganese, 1 part of silicon, 1 part of sulphur, 1 part and 0.03 part of carbon of phosphorus.
A kind of new type stainless steel. corrosion resistance material preparation process that can be contacted with food, comprising the following steps:
S1, raw material and equipment are checked, determines that raw material proportioning is correct and equipment operation is normal；
S2, raw material iron is placed in smelting furnace and is heated, increase temperature to 1600 degrees Celsius, until after iron fusing 70%, by it
His raw material, which are added in iron liquid, to be stirred, and molten steel is formed；
S3, smelting furnace is vacuum-treated, vacuum degree is dropped into 800 Pascals in 40 seconds, started oxygen blast and force decarburization,
After having blown oxygen, vacuum degree is reduced within 6 minutes to 200 Pascals；
S4, the molten steel after decarburization is placed to ladle refining furnace progress LF refining, temperature was increased to 1700 within 3 minutes
Degree Celsius, deoxidation treatment is carried out, deoxidation number is 4 times, and the molten steel after deoxidation carries out tapping processing, and tapping temperature is 1600
Degree Celsius；
S5, moulding by casting processing is carried out to the molten steel of tapping, pouring temperature is 1500 degrees Celsius, forms stainless steel ingot casting；
S6, heat treatment diffusion annealing processing is carried out to stainless steel ingot casting, temperature is 1100 degrees Celsius, and the time is 2 hours, furnace
Be cooled to 400 degrees Celsius come out of the stove it is air-cooled, air cooling time be 8 hours；
S7, to stainless steel ingot casting carry out hot extrusion, and squeeze temperature be 650 degrees Celsius, pressure be 8 megapascal this
Card, extrusion time are 2 hours；
S8, the stainless steel ingot casting after hot extrusion is carried out to recrystallization annealing processing, temperature is 600-700 degrees Celsius, the time
It is 70-90 minutes；
S9, recrystallization annealing is handled stainless steel ingot casting after extruding 300 degrees Celsius at a temperature of be heat-treated,
Time is 3 hours, is cooled to room temperature after being heat-treated with the cooling velocity of 80 DEG C/h, obtains finished product stainless steel material.
Embodiment two:
A kind of novel stainless Steel material that can be contacted with food, the raw material including following composition: 55 parts of iron, 8 parts of copper, zinc
4 parts, 2 parts of tin, 2 parts of chromium, 2 parts of titanium, 4 parts of nickel, 4 parts of aluminium, 3 parts of manganese, 1.5 parts of silicon, 2 parts of sulphur, 2 parts and 0.04 part of carbon of phosphorus.
A kind of new type stainless steel. corrosion resistance material preparation process that can be contacted with food, comprising the following steps:
S1, raw material and equipment are checked, determines that raw material proportioning is correct and equipment operation is normal；
S2, raw material iron is placed in smelting furnace and is heated, increase temperature to 1650 degrees Celsius, until after iron fusing 75%, by it
His raw material, which are added in iron liquid, to be stirred, and molten steel is formed；
S3, smelting furnace is vacuum-treated, vacuum degree is dropped into 850 Pascals in 50 seconds, started oxygen blast and force decarburization,
After having blown oxygen, vacuum degree is reduced within 7 minutes to 250 Pascals；
S4, the molten steel after decarburization is placed to ladle refining furnace progress LF refining, temperature was increased to 1750 within 4 minutes
Degree Celsius, deoxidation treatment is carried out, deoxidation number is 5 times, and the molten steel after deoxidation carries out tapping processing, and tapping temperature is 1650
Degree Celsius；
S5, moulding by casting processing is carried out to the molten steel of tapping, pouring temperature is 1550 degrees Celsius, forms stainless steel ingot casting；
S6, heat treatment diffusion annealing processing being carried out to stainless steel ingot casting, temperature is 1150 degrees Celsius, and the time is 2.5 hours,
Be furnace-cooled to 450 degrees Celsius come out of the stove it is air-cooled, air cooling time be 9 hours；
S7, to stainless steel ingot casting carry out hot extrusion, and squeeze temperature be 680 degrees Celsius, pressure be 9 megapascal this
Card, extrusion time are 3 hours；
S8, the stainless steel ingot casting after hot extrusion is carried out to recrystallization annealing processing, temperature is 650 degrees Celsius, the time 80
Minute；
S9, recrystallization annealing is handled stainless steel ingot casting after extruding 400 degrees Celsius at a temperature of be heat-treated,
Time is 4 hours, is cooled to room temperature after being heat-treated with the cooling velocity of 90 DEG C/h, obtains finished product stainless steel material.
Embodiment three:
A kind of novel stainless Steel material that can be contacted with food, the raw material including following composition: 60 parts of iron, 9 parts of copper, zinc
5 parts, 3 parts of tin, 3 parts of chromium, 3 parts of titanium, 5 parts of nickel, 5 parts of aluminium, 4 parts of manganese, 2 parts of silicon, 3 parts of sulphur, 3 parts and 0.05 part of carbon of phosphorus.
A kind of new type stainless steel. corrosion resistance material preparation process that can be contacted with food, comprising the following steps:
S1, raw material and equipment are checked, determines that raw material proportioning is correct and equipment operation is normal；
S2, raw material iron is placed in smelting furnace and is heated, increase temperature to 1700 degrees Celsius, until after iron fusing 80%, by it
His raw material, which are added in iron liquid, to be stirred, and molten steel is formed；
S3, smelting furnace is vacuum-treated, vacuum degree is dropped into 900 Pascals in 60 seconds, started oxygen blast and force decarburization,
After having blown oxygen, vacuum degree is reduced within 8 minutes to 300 Pascals；
S4, the molten steel after decarburization is placed to ladle refining furnace progress LF refining, temperature was increased to 1800 within 5 minutes
Degree Celsius, deoxidation treatment is carried out, deoxidation number is 6 times, and the molten steel after deoxidation carries out tapping processing, and tapping temperature is 1700
Degree Celsius；
S5, moulding by casting processing is carried out to the molten steel of tapping, pouring temperature is 1600 degrees Celsius, forms stainless steel ingot casting；
S6, heat treatment diffusion annealing processing is carried out to stainless steel ingot casting, temperature is 1200 degrees Celsius, and the time is 3 hours, furnace
Be cooled to 500 degrees Celsius come out of the stove it is air-cooled, air cooling time be 10 hours；
S7, to stainless steel ingot casting carry out hot extrusion, and squeeze temperature be 700 degrees Celsius, pressure be 10 megapascal this
Card, extrusion time are 4 hours；
S8, the stainless steel ingot casting after hot extrusion is carried out to recrystallization annealing processing, temperature is 700 degrees Celsius, the time 90
Minute；
S9, recrystallization annealing is handled stainless steel ingot casting after extruding 500 degrees Celsius at a temperature of be heat-treated,
Time is 5 hours, is cooled to room temperature after being heat-treated with the cooling velocity of 100 DEG C/h, obtains finished product stainless steel material.
The beneficial effects of the present invention are: copper is added in the material of stainless steel, since copper has graphitizing, so it adds
Enter to can change the corrosion resistance of stainless steel in mild steel, and tensile strength, harden ability can be improved and reduce ductility,
And it is added in stainless steel together with nickel, avoids the formation of copper brittleness, and under the action of copper, so that stainless steel is provided with sterilization
Ability can be contacted with food, and can breed bacterium to avoid food.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. the novel stainless Steel material that one kind can be contacted with food, which is characterized in that the raw material including following composition: iron 50-
60 parts, 7-9 parts of copper, 3-5 parts of zinc, 1-3 parts of tin, 1-3 parts of chromium, 1-3 parts of titanium, 3-5 parts of nickel, 3-5 parts of aluminium, 2-4 parts of manganese, 1-2 parts of silicon,
1-3 parts of sulphur, 1-3 parts and carbon 0.03-0.05 parts of phosphorus.
2. the new type stainless steel. corrosion resistance material preparation process that one kind can be contacted with food, which comprises the following steps:
S1, raw material and equipment are checked, determines that raw material proportioning is correct and equipment operation is normal；
S2, raw material iron is placed in smelting furnace and is heated, after increasing temperature to iron fusing 70-80%, other raw material are added to
It is stirred in iron liquid, forms molten steel；
S3, smelting furnace is vacuum-treated, vacuum degree is quickly dropped to 800-900 Pascal, started oxygen blast and force decarburization, blown
After oxygen, vacuum degree is reduced within 6-8 minutes to 200-300 Pascal；
S4, the molten steel after decarburization is placed to ladle refining furnace progress LF refining, temperature was increased to 1700- within 3-5 minutes
1800 degrees Celsius, deoxidation treatment is carried out, the molten steel after deoxidation carries out tapping processing, and tapping temperature is that 1600-1700 is Celsius
Degree；
S5, moulding by casting processing is carried out to the molten steel of tapping, pouring temperature is 1500-1600 degrees Celsius, forms stainless steel ingot casting；
S6, heat treatment diffusion annealing processing is carried out to stainless steel ingot casting, temperature is 1100-1200 degrees Celsius, and the time is that 2-3 is small
When, be furnace-cooled to 400-500 degrees Celsius come out of the stove it is air-cooled；
S7, hot extrusion is carried out to stainless steel ingot casting, and squeezing temperature is 650-700 degrees Celsius, pressure is 8-10 megapascal
This card, extrusion time are 2-4 hours；
S8, the stainless steel ingot casting after hot extrusion is carried out to recrystallization annealing processing, temperature is 600-700 degrees Celsius, time 70-
90 minutes；
S9, recrystallization annealing is handled stainless steel ingot casting after extruding 300-500 degrees Celsius at a temperature of be heat-treated,
Time is 3-5 hours, is cooled to room temperature after being heat-treated, obtains finished product stainless steel material.
3. the new type stainless steel. corrosion resistance material preparation process that one kind according to claim 2 can be contacted with food, which is characterized in that
In the S2, increasing the temperature that temperature to iron melts is 1600-1700 degrees Celsius.
4. the new type stainless steel. corrosion resistance material preparation process that one kind according to claim 2 can be contacted with food, which is characterized in that
In the S3, the time that vacuum degree is quickly dropped to 800-900 Pascal is 40-60 seconds.
5. the new type stainless steel. corrosion resistance material preparation process that one kind according to claim 2 can be contacted with food, which is characterized in that
In the S4, the number for carrying out deoxidation treatment is 4-6 times.
6. the new type stainless steel. corrosion resistance material preparation process that one kind according to claim 2 can be contacted with food, which is characterized in that
In the S6, air cooling time is 8-10 hours.
7. the new type stainless steel. corrosion resistance material preparation process that one kind according to claim 2 can be contacted with food, which is characterized in that
In the S9, it is cooled to room temperature after being heat-treated with the cooling velocity of 80-100 DEG C/h.
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| CN109136764A (en) * | 2018-09-28 | 2019-01-04 | 共享铸钢有限公司 | A kind of production method of large thick-wall axis class steel-casting |
| CN109811270A (en) * | 2017-11-20 | 2019-05-28 | 南京理工大学 | A kind of preparation method of heterogeneous layer structure 304L stainless steel |
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2019
- 2019-07-27 CN CN201910685407.5A patent/CN110284079A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999822A (en) * | 2006-12-21 | 2007-07-18 | 武汉科技大学 | Preparation method of high silicon orientation silicon steel thin plate |
| CN102041453A (en) * | 2009-10-22 | 2011-05-04 | 湖南海旭实业集团有限公司 | Novel wear-resisting and corrosion-resisting stainless steel and production process thereof |
| CN107002157A (en) * | 2014-10-15 | 2017-08-01 | Sms集团有限公司 | For the grain oriented electrical steel strip starting for manufacturing the technique of grain oriented electrical steel strip starting and being obtained according to the technique |
| CN106756603A (en) * | 2016-12-08 | 2017-05-31 | 绍兴市口福食品有限公司 | A kind of environmental protection densification stainless steel alloy material and preparation method thereof |
| CN109811270A (en) * | 2017-11-20 | 2019-05-28 | 南京理工大学 | A kind of preparation method of heterogeneous layer structure 304L stainless steel |
| CN109136764A (en) * | 2018-09-28 | 2019-01-04 | 共享铸钢有限公司 | A kind of production method of large thick-wall axis class steel-casting |
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Application publication date: 20190927 |