CN105441824A - Seawater-corrosion-resistance and high-elasticity stainless steel pump valve casting and manufacturing method thereof - Google Patents
Seawater-corrosion-resistance and high-elasticity stainless steel pump valve casting and manufacturing method thereof Download PDFInfo
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- CN105441824A CN105441824A CN201510833817.1A CN201510833817A CN105441824A CN 105441824 A CN105441824 A CN 105441824A CN 201510833817 A CN201510833817 A CN 201510833817A CN 105441824 A CN105441824 A CN 105441824A
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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
- C22C38/18—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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- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
-
- 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
- C22C38/18—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
-
- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/108—Valves characterised by the material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0448—Steel
- F05C2201/046—Stainless steel or inox, e.g. 18-8
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a seawater-corrosion-resistance and high-elasticity stainless steel pump valve casting. The use number of elements such as Ni, Mo, Al and V is properly increased for the stainless steel casting on the basis that low-carbon steel has good toughness and plasticity, and good mechanical performance is achieved on casting materials; elasticity is good, wear resistance and scratch resistance are achieved, the good corrosion resistance capability is achieved, and especially the protection capability on seawater media is achieved; an added composite refining agent containing nanocrystallization Ca-RE intermediate phase alloy powder and graphene and loaded by honeycomb ceramic powder in a melting solution has high thermal stability, the effect of efficient impurity removing and slag melting is achieved, the purity of molten steel can be effectively improved, the internal structure of the casting is improved, and the yield is increased; and the casting obtained through multiple times of thermal treatment is stable in performance and more durable, and energy-saving and efficient production effects can be achieved.
Description
Technical field
The present invention relates to stainless cast steel part technical field, high-elastic stainless steel pump valve foundry goods particularly relating to a kind of seawater corrosion resistance and preparation method thereof.
Background technology
Stainless Steel Pump, valve are widely used in chemical industry, petrochemical industry, oil, papermaking, mining, electric power, liquefied gas, food, pharmacy, plumbing, municipal administration, mechanical equipment coordination, electronic industry, the fields such as urban construction.Pump is the parts carrying various different media, and valve is function unit in pipeline fluid delivery system, it is used to change path section and medium flowing direction, has the functions such as water conservancy diversion, cut-off, adjustment, throttling, non-return, shunting or overflow release, both usually support the use.
Because the medium of Stainless Steel Pump, valve contact is varied, may be water, steam, oil product, gas, mud, various corrosive medium, liquid metal and radioactive fluid etc., therefore higher to the performance requriements of pump valve material, pump valve steel alloy spread in performance is in the market uneven, Production requirement can not be met far away, be badly in need of setting about from technique and formula, obtain the stainless material of more high-quality and high-efficiency.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, high-elastic stainless steel pump valve foundry goods providing a kind of seawater corrosion resistance and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of high-elastic stainless steel pump valve foundry goods of seawater corrosion resistance, in this stainless cast steel part, the weight percentage of each component is: Ni:18-22%, Cr:10-12%, Mo:1.5-2.0%, Ti:0.6-0.8%, Mn:3.5-5.0%, Al:0.1-0.2%, V:0.1-0.2%, Sn:0.2-0.3%, Ba:0.4-0.5%, Si:0.1-0.2%, S < 0.03%, P < 0.03%, C≤0.25%, refining agent 0.4-0.5%, and surplus is Fe and inevitable impurity.
Described refining agent is made up of the raw material of following weight percent: ceramic honey comb powder 5-8, Graphene 0.1-0.2, dehydrated alcohol 10-12, Ca content is the Al-Ca master alloyed powder 5-6 of 75-80wt.%, RE content is 10-15wt.%Al-RE master alloyed powder 3-4, stearic acid 1-2, the preparation method of this refining agent is: first by Al-Ca master alloyed powder, Al-RE master alloyed powder drops in ball grinder together, dehydrated alcohol is added after being uniformly mixed, stearic acid, Graphene, the 2-3h of ball milling mixing in confined conditions, ceramic honey comb powder is added after ball milling terminates, continue grinding 20-30min, after grinding terminates, mixture is taken out, drying at room temperature, remove dehydrated alcohol and stearic acid completely, obtain.
The preparation method of the high-elastic stainless steel pump valve foundry goods of described a kind of seawater corrosion resistance is:
(1) each raw material except refining agent is dropped in smelting furnace according to element wt proportioning, be heated to 1480 DEG C of-1550 DEG C of meltings, add refining agent subsequently, after being uniformly mixed, liquation is warming up to 1500-1580 DEG C, refining treatment 40-50min, finally by gained liquation through deslagging, degassed after be poured in mold cavity, naturally cool to the demoulding after room temperature, obtain ingot casting;
(2) 780-820 DEG C is heated to after the ingot casting surface treatment of gained with the temperature rise rate of 105-115 DEG C/h, insulation 4-5h, cold quenching is to 600-650 DEG C subsequently, air cooling is continued to 300-350 DEG C after insulation 2-3h, be warming up to 450-520 DEG C with the speed of 80-100 DEG C/h after insulation 1-2h, after insulation 2-3h, air cooling is to room temperature and get final product.
The present invention suitably improves Ni on the basis that soft steel possesses excellent toughness and plasticity, Mo, Al, the consumption of the elements such as V, impart the mechanical property that casting material is good, excellent spring, wear-resisting scratch resistance, possesses good resistance to corrosion, especially to the protective capacities of Seawater, what add in liquation possesses high thermostability by the nanometer Ca-RE mesophase alloy powder of ceramic honey comb powder load and Graphene composite refiner, reach the effect of efficient impurity removal slag, effectively can improve the purity of molten steel, improve cast-internal structure, improve yield rate, the cast properties obtained after repeatedly thermal treatment is stablized, more durable in use, the production effect of efficient energy-saving can be reached.
Embodiment
In this embodiment stainless cast steel part, the weight percentage of each component is: Ni:18%, Cr:10%, Mo:1.5%, Ti:0.6%, Mn:3.5%, Al:0.1%, V:0.1%, Sn:0.2%, Ba:0.4%, Si:0.1%, S < 0.03%, P < 0.03%, C:0.25%, refining agent 0.4%, and surplus is Fe and inevitable impurity.
Wherein refining agent is made up of the raw material of following weight percent: ceramic honey comb powder 5, Graphene 0.1, dehydrated alcohol 10, Ca content is the Al-Ca master alloyed powder 5 of 75wt.%, RE content is 10wt.%Al-RE master alloyed powder 3, stearic acid 1, the preparation method of this refining agent is: first by Al-Ca master alloyed powder, Al-RE master alloyed powder drops in ball grinder together, dehydrated alcohol is added after being uniformly mixed, stearic acid, Graphene, the 2h of ball milling mixing in confined conditions, ceramic honey comb powder is added after ball milling terminates, continue grinding 20min, after grinding terminates, mixture is taken out, drying at room temperature, remove dehydrated alcohol and stearic acid completely, obtain.
The stainless preparation method of this embodiment is:
(1) each raw material except refining agent is dropped in smelting furnace according to element wt proportioning, be heated to 1500 DEG C of meltings, add refining agent subsequently, after being uniformly mixed, liquation is warming up to 1540 DEG C, refining treatment 40min, finally by gained liquation through deslagging, degassed after be poured in mold cavity, naturally cool to the demoulding after room temperature, obtain ingot casting;
(2) 780 DEG C are heated to after the ingot casting surface treatment of gained with the temperature rise rate of 105 DEG C/h, insulation 4h, subsequently cold quenching to 600 DEG C, continue air cooling to 300 DEG C after insulation 2h, be warming up to 450 DEG C with the speed of 80 DEG C/h after insulation 1h, after insulation 2h, air cooling is to room temperature and get final product.
The cast properties test result prepared is:
Tensile strength: 705MPa; Yield strength: 420MPa; Breaking tenacity: 354.6Pa; Plastix strain before fracture: 10.2%; Impelling strength: 71.4J/cm
2; Young's modulus: 268.6GPa; Erosion rate≤the 0.005mm/a of its material in acid-base solution, erosion rate≤0.003mm/a in the sodium chloride solution of 10%.
Claims (3)
1. the high-elastic stainless steel pump valve foundry goods of a seawater corrosion resistance, it is characterized in that, in this stainless cast steel part, the weight percentage of each component is: Ni:18-22%, Cr:10-12%, Mo:1.5-2.0%, Ti:0.6-0.8%, Mn:3.5-5.0%, Al:0.1-0.2%, V:0.1-0.2%, Sn:0.2-0.3%, Ba:0.4-0.5%, Si:0.1-0.2%, S < 0.03%, P < 0.03%, C≤0.25%, refining agent 0.4-0.5%, and surplus is Fe and inevitable impurity.
2. the high-elastic stainless steel pump valve foundry goods of a kind of seawater corrosion resistance as claimed in claim 1, it is characterized in that: described refining agent is made up of the raw material of following weight percent: ceramic honey comb powder 5-8, Graphene 0.1-0.2, dehydrated alcohol 10-12, Ca content is the Al-Ca master alloyed powder 5-6 of 75-80wt.%, RE content is 10-15wt.%Al-RE master alloyed powder 3-4, stearic acid 1-2, the preparation method of this refining agent is: first by Al-Ca master alloyed powder, Al-RE master alloyed powder drops in ball grinder together, dehydrated alcohol is added after being uniformly mixed, stearic acid, Graphene, the 2-3h of ball milling mixing in confined conditions, ceramic honey comb powder is added after ball milling terminates, continue grinding 20-30min, after grinding terminates, mixture is taken out, drying at room temperature, remove dehydrated alcohol and stearic acid completely, obtain.
3. the preparation method of the high-elastic stainless steel pump valve foundry goods of a kind of seawater corrosion resistance as claimed in claim 1, it is characterized in that, described preparation method is:
(1) each raw material except refining agent is dropped in smelting furnace according to element wt proportioning, be heated to 1480 DEG C of-1550 DEG C of meltings, add refining agent subsequently, after being uniformly mixed, liquation is warming up to 1500-1580 DEG C, refining treatment 40-50min, finally by gained liquation through deslagging, degassed after be poured in mold cavity, naturally cool to the demoulding after room temperature, obtain ingot casting;
(2) 780-820 DEG C is heated to after the ingot casting surface treatment of gained with the temperature rise rate of 105-115 DEG C/h, insulation 4-5h, cold quenching is to 600-650 DEG C subsequently, air cooling is continued to 300-350 DEG C after insulation 2-3h, be warming up to 450-520 DEG C with the speed of 80-100 DEG C/h after insulation 1-2h, after insulation 2-3h, air cooling is to room temperature and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510833817.1A CN105441824A (en) | 2015-11-25 | 2015-11-25 | Seawater-corrosion-resistance and high-elasticity stainless steel pump valve casting and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510833817.1A CN105441824A (en) | 2015-11-25 | 2015-11-25 | Seawater-corrosion-resistance and high-elasticity stainless steel pump valve casting and manufacturing method thereof |
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| CN105441824A true CN105441824A (en) | 2016-03-30 |
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| CN201510833817.1A Pending CN105441824A (en) | 2015-11-25 | 2015-11-25 | Seawater-corrosion-resistance and high-elasticity stainless steel pump valve casting and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107043896A (en) * | 2017-03-04 | 2017-08-15 | 蒋培丽 | Anticorrosion steel and its forging technology |
| CN112593137A (en) * | 2020-12-11 | 2021-04-02 | 江苏椿宇机械制造有限公司 | Alloy material for high-temperature-resistant pump valve and production process thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250105A (en) * | 1999-11-10 | 2000-04-12 | 韦世鹤 | Stainless steel refining agent and its usage in smelting stainless steel |
| CN102639742A (en) * | 2009-11-18 | 2012-08-15 | 住友金属工业株式会社 | Austenite stainless steel sheet and method for producing same |
| CN104451406A (en) * | 2014-11-18 | 2015-03-25 | 山东省源通机械股份有限公司 | Highly saline-alkaline corrosion resistant stainless steel casting and preparation method thereof |
-
2015
- 2015-11-25 CN CN201510833817.1A patent/CN105441824A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250105A (en) * | 1999-11-10 | 2000-04-12 | 韦世鹤 | Stainless steel refining agent and its usage in smelting stainless steel |
| CN102639742A (en) * | 2009-11-18 | 2012-08-15 | 住友金属工业株式会社 | Austenite stainless steel sheet and method for producing same |
| CN104451406A (en) * | 2014-11-18 | 2015-03-25 | 山东省源通机械股份有限公司 | Highly saline-alkaline corrosion resistant stainless steel casting and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107043896A (en) * | 2017-03-04 | 2017-08-15 | 蒋培丽 | Anticorrosion steel and its forging technology |
| CN112593137A (en) * | 2020-12-11 | 2021-04-02 | 江苏椿宇机械制造有限公司 | Alloy material for high-temperature-resistant pump valve and production process thereof |
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Application publication date: 20160330 |
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