CN108060346A - Rotary drum disk two phase stainless steel and its manufacturing method - Google Patents
Rotary drum disk two phase stainless steel and its manufacturing method Download PDFInfo
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- CN108060346A CN108060346A CN201711069020.4A CN201711069020A CN108060346A CN 108060346 A CN108060346 A CN 108060346A CN 201711069020 A CN201711069020 A CN 201711069020A CN 108060346 A CN108060346 A CN 108060346A
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- stainless steel
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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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/005—Manufacture 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
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
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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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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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
- C22C38/58—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)
- Manufacturing & Machinery (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a kind of rotary drum disk two phase stainless steel and its manufacturing methods, and especially suitable for a kind of two-phase stainless steel large-sized seperator disk of the media such as corn oil, water, sediment, the chemical composition of two phase stainless steel used is by weight percentage：C≤0.03%, S≤0.005%, P≤0.005%, Si≤0.5%, N≤0.02%, W：≤ 6%, Mn：0.1 2%, Cr：10 15%, Ni：1.0 4.0%, Mo：0.5 2.0%, surplus is Fe and inevitable impurity.The manufacture of the two phase stainless steel includes：Steel ingot casting hot rolling solution treatment cooler drum disk two phase stainless steel is smelted in tapping.Based on traditional desulfurization, dephosphorization and desilication process, using the multiple slag making richness argon blowing super-low sulfur phosphorus control technology of efficient single-turn stove, by adding in refining agent, rich argon stirring and single-turn stove accurate temperature controlling, make the mobility of melt be improved, significantly inhibit be mingled with, stomata, shrinkage cavity and formation the defects of shrinkage porosite, effectively control the mass fraction of sulphur, phosphorus down to less than 0.005%.
Description
Technical field
The present invention relates to a kind of smelting and pressure processing manufacturing technology, especially suitable for Jie such as a kind of corn oil, water, sediments
The manufacturing method of the two-phase stainless steel large-sized seperator disk of matter.
Background technology
At present the country starch separator be nozzle continuous discharge type disk centrifuge, the starch being mainly used in starch industry
Refined, pre-concentration, Protein Separation and recovery of starch etc. can be used for food, medicine, dyeization, the liquid solid two of the departments such as environmental protection
Phase separation, the technical process, such as kaolin such as concentration and recovery and clarification, the recycling of paper pulp, wastewater treatment etc..China's manufacture dish-style is formed sediment
The time of powder seperator is shorter, and major technique, which has from same kind of products at abroad, to be digested and assimilated.The dish-style of China's manufacture at present
The drum assembly of starch separator is made of multiple parts, and internal structure is complicated, not only assembles cumbersome, but also feed system is easy
It blocks, equipment runs ten days just necessary cleaning during shutdown rotary drums, can not realize three phase separation, greatly reduce equipment work efficiency.
Western developed country is more early in separation of solid and liquid area research, and also more comprehensively, completely, having substantial amounts of business should for current technology
Example, but the product price of these companies is prohibitively expensive, trouble, expense are also relatively high again for maintenance of equipment.
The maximizing of dish-style starch separator, intelligence, the application of multifunction, high-speed high-precision and property material are not
The development trend come, and the latest development direction of domestic starch separator, the necessarily update of dish-style starch separator product are changed
Generation.An importance of the material as research dish-style starch separator update new product, is closed be subject to many researchers
Note, wherein two phase stainless steel due to good intensity and plasticity combination, each application field be all subject to many scholars and
Widely studied, but the grinding for the domestic dedicated disk centrifuge equipment two phase stainless steel of starch separator of Enterprise Experts
Study carefully and be still in the practice stage.
The content of the invention
It is double by selecting the purpose of the invention is to provide a kind of rotary drum disk two phase stainless steel and its manufacturing method
Phase stainless steel is rotary drum material, based on traditional desulfurization, dephosphorization and desilication process, using the multiple slag making richness argon of efficient single-turn stove
Blow super-low sulfur phosphorus control technology, by adding in refining agent, rich argon stirring and single-turn stove accurate temperature controlling, obtains the mobility of melt
To improvement, significantly inhibit be mingled with, stomata, shrinkage cavity and formation the defects of shrinkage porosite, effectively control sulphur, phosphorus mass fraction down to
Less than 0.005%.By joint using epithelium V belt translation, underslung rotary drum connects design with short axle, and the lubrication of bearing then uses
Outer circulation oil pump forced feed lubrication obtains optimal separation effect eventually by internal circulating load in adjusting.The two-phase stainless of this method manufacture
Steel seperator disk thermoplasticity is good, and finished product recovery rate is high, and the two-phase especially suitable for media such as a kind of corn oil, water, sediments is not
Become rusty steel large size seperator disk.
The technical scheme is that：
A kind of rotary drum disk two phase stainless steel and its manufacturing method, the chemical composition by weight hundred of two phase stainless steel used
Ratio is divided to be calculated as：C≤0.03%, S≤0.005%, P≤0.005%, Si≤0.5%, N≤0.02%, W：≤ 6%, Mn：0.1-
2%, Cr：10-15%, Ni：1.0-4.0%, Mo：0.5-2.0%, surplus are Fe and inevitable impurity.The two-phase stainless
The manufacture of steel includes：Tapping-smelting-steel ingot casting-hot rolling-solution treatment-cooling-rotary drum disk two phase stainless steel.It is based on
Traditional desulfurization, dephosphorization and desilication process using the multiple slag making richness argon blowing super-low sulfur phosphorus control technology of efficient single-turn stove, leads to
Cross addition refining agent, the stirring of rich argon and single-turn stove accurate temperature controlling, make the mobility of melt be improved, significantly inhibit be mingled with, gas
The formation of the defects of hole, shrinkage cavity and shrinkage porosite effectively controls the mass fraction of sulphur, phosphorus down to less than 0.005%.
Preferably, which has very excellent intensity and toughness, and tensile strength reaches more than 830MPa, bends
Intensity is taken up to more than 720MPa, elasticity modulus reaches more than 5200MPa, and up to more than 14.0%, bending strength reaches elongation at break
More than 1160MPa, impact strength reach 50J/cm2More than, the two-phase especially suitable for media such as a kind of corn oil, water, sediments is not
Become rusty steel large size seperator disk.
Preferably, smelted by the chemical composition of above-mentioned two phase stainless steel, then pour into steel ingot, control temperature exists
At 1000-1300 DEG C to the two phase stainless steel carry out hot rolling treatment, control temperature at 960-1150 DEG C to the two-phase not
The steel that becomes rusty carries out solution strengthening processing, and strengthened solution time controls at 60-300 seconds, the two phase stainless steel is cooled to room temperature.
Preferably, the two phase stainless steel seperator disk thermoplasticity of this method manufacture is good, and finished product recovery rate is high, can be in corn
Oil, water, the medium dielectric corrosion of three-phase medium of sediment (containing weak acid).
Specific embodiment
In order to which the present invention is better described, attached embodiment is as follows.It is emphasized that embodiment is not meant to the present invention
Scope be limited in the condition of embodiment narration, the purpose of embodiment is the content that the present invention is further explained and its feasible
Property.
The manufacturing method of two phase stainless steel of the present invention comprises the following steps：Gu tapping-smelting-steel ingot casting-hot rolling-
Molten processing-cooling-rotary drum disk two phase stainless steel.First, melting is carried out by the following method：With furnace melting two-phase stainless
Steel (chemical composition is as shown in table 1 by weight percentage) carries out composition adjustment, it is made to essentially become the chemical group of dreamboat
Into then using AOD furnace, carrying out traditional decarburization, desulfurization, dephosphorization and desiliconization processing.Obtained molten soup is cast into quality is
800kg, the steel ingot of a diameter of 200mm.Length 850mm is then cut into, (disc dimensions) obtain rotary drum disk steel billet.With
Afterwards, which at 1000-1300 DEG C is subjected to hot rolling treatment, solution strengthening processing is carried out at 960-1150 DEG C, solid solution is strong
Change time control at 60-300 seconds, be cooled to room temperature, obtain rotary drum disk two phase stainless steel of the present invention.
The chemical composition of two phase stainless steel of the present invention is as shown in table 1 by weight percentage.
The chemical composition (by weight percentage) of 1 two phase stainless steel of the present invention of table
Note：Surplus is Fe and inevitable impurity in each embodiment.
It is the brief understanding that each element content selects in the chemical composition to two phase stainless steel below.
C is that have make austenite phase stabilization, improve the effect of intensity, and makes Carbide Precipitation in the heating of heat treatment
And the element of the effect of microstructure is obtained, plasticity and toughness are good.
S, P controls its content, can effectively prevent corrosion resistance and toughness from reducing.
Si forms dense oxidation film, can improve the stability of two phase stainless steel.
N improves intercrystalline corrosion.
Mn improves corrosion resistance of the two phase stainless steel in organic acid.
W improves resistance to spot corrosion and crevice corrosion.
Mo forms dense oxidation film, can prevent Cl-Spot corrosion
Cr can improve solid solution electrode current potential, form fine and close oxide-film, but excessive Cr can cause intercrystalline corrosion
Become larger.Therefore its content is controlled.
Ni increases intensity and plasticity and toughness, prevents transcrystalline type stress corrosion.
The detailed manufacturing process of two phase stainless steel of the present invention in embodiments is as shown in table 2.
The manufacturing process of 2 two phase stainless steel of the present invention of table
| Embodiment | 1 | 2 | 3 | 4 | 5 |
| Hot-rolled temperature (DEG C) | 1000 | 1100 | 1300 | 1200 | 1150 |
| Solid solubility temperature (DEG C) | 960 | 1050 | 1100 | 1150 | 1000 |
| Solution time (s) | 300 | 180 | 60 | 150 | 90 |
| Cooling velocity/(DEG C/s) | 12 | 15 | 10 | 20 | 15 |
The mechanical property of rotary drum disk two phase stainless steel of the present invention is as shown in table 3.
The manufacturing process and performance of 3 two phase stainless steel of the present invention of table
Can be seen that two phase stainless steel provided by the present invention from the performance test results of various embodiments above has very
Excellent intensity and toughness.Such as：The tensile strength of two phase stainless steel used is 850MPa in embodiment 1, and yield strength is
725MPa, elasticity modulus 5500MPa, elongation at break 14.5%, bending strength 1160MPa, impact strength 50J/
cm2。
Claims (4)
- A kind of 1. manufacturing method of rotary drum disk two phase stainless steel, which is characterized in that the chemical composition of two phase stainless steel used It is by weight percentage：C≤0.03%, S≤0.005%, P≤0.005%, Si≤0.5%, N≤0.02%, W：≤ 6%, Mn：0.1-2%, Cr：10-15%, Ni：1.0-4.0%, Mo：0.5-2.0%, surplus be Fe and inevitable impurity, this pair The manufacture of phase stainless steel includes：Tapping-smelting-steel ingot casting-one solution treatment of hot rolling-cooling, obtains rotary drum disk two-phase Stainless steel, based on traditional desulfurization, dephosphorization and desilication process, using the multiple slag making richness argon blowing super-low sulfur of efficient single-turn stove Phosphorus control technology by adding in refining agent, rich argon stirring and single-turn stove accurate temperature controlling, makes the mobility of melt be improved, imitates The mass fraction of sulphur, phosphorus is controlled down to less than 0.005%.
- 2. a kind of rotary drum disk two phase stainless steel according to claim 1 and its manufacturing method, which is characterized in that this pair Phase stainless steel has very excellent intensity and toughness, and tensile strength reaches more than 830MPa, and yield strength reaches more than 720MPa, Elasticity modulus reaches more than 5200MPa, and elongation at break is up to more than 14.0%, and bending strength reaches more than 1160MPa, and impact strength reaches 50J/cm2More than, suitable for a kind of two-phase stainless steel large-sized seperator disk of the media such as corn oil, water, sediment.
- 3. a kind of rotary drum disk two phase stainless steel according to claim 1 and its manufacturing method, which is characterized in that by power Profit requires the chemical composition of the two phase stainless steel described in 1 to be smelted, and then pours into steel ingot, control temperature is in 1000-1300 Hot rolling treatment is carried out at DEG C to the two phase stainless steel, control temperature consolidates the two phase stainless steel at 960-1150 DEG C Molten intensive treatment, strengthened solution time control at 60-300 seconds, the two phase stainless steel are cooled to room temperature.
- 4. a kind of rotary drum disk two phase stainless steel according to claim 1 and its manufacturing method, which is characterized in that the party The two phase stainless steel seperator disk thermoplasticity of method manufacture is good, and finished product recovery rate is high, can be situated between in the three-phase of corn oil, water, sediment The medium dielectric corrosion of matter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711069020.4A CN108060346A (en) | 2017-11-02 | 2017-11-02 | Rotary drum disk two phase stainless steel and its manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711069020.4A CN108060346A (en) | 2017-11-02 | 2017-11-02 | Rotary drum disk two phase stainless steel and its manufacturing method |
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| Publication Number | Publication Date |
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| CN108060346A true CN108060346A (en) | 2018-05-22 |
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| CN201711069020.4A Pending CN108060346A (en) | 2017-11-02 | 2017-11-02 | Rotary drum disk two phase stainless steel and its manufacturing method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550565A (en) * | 2003-05-14 | 2004-12-01 | ������������ʽ���� | High-strength stainless steel sheet and method for manufacturing the same |
| CA2532222A1 (en) * | 2003-07-22 | 2005-01-27 | Sumitomo Metal Industries, Ltd. | Martensitic stainless steel |
-
2017
- 2017-11-02 CN CN201711069020.4A patent/CN108060346A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550565A (en) * | 2003-05-14 | 2004-12-01 | ������������ʽ���� | High-strength stainless steel sheet and method for manufacturing the same |
| CA2532222A1 (en) * | 2003-07-22 | 2005-01-27 | Sumitomo Metal Industries, Ltd. | Martensitic stainless steel |
Non-Patent Citations (3)
| Title |
|---|
| 上海科学技术出版社: "《高硫土铁转炉炼钢经验》", 31 July 1959, 上海科学技术出版社 * |
| 韩明荣等: "《冶金原理》", 30 September 2008, 冶金工业出版社 * |
| 首钢炼钢厂等: "《氧气顶吹转炉炼钢工人读本》", 30 November 1971, 冶金工业出版社 * |
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Application publication date: 20180522 |