CN105441826A - High-silicon and low-nickel wear-resistance stainless steel pump valve casting and manufacturing method thereof - Google Patents
High-silicon and low-nickel wear-resistance stainless steel pump valve casting and manufacturing method thereof Download PDFInfo
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- CN105441826A CN105441826A CN201510833916.XA CN201510833916A CN105441826A CN 105441826 A CN105441826 A CN 105441826A CN 201510833916 A CN201510833916 A CN 201510833916A CN 105441826 A CN105441826 A CN 105441826A
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- stainless steel
- refining agent
- pump valve
- insulation
- casting
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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
- C22C38/18—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
-
- 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
- C22C38/44—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
- C22C38/50—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
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- 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)
- Contacts (AREA)
Abstract
The invention discloses a high-silicon and low-nickel wear-resistance stainless steel pump valve casting. According to the stainless steel casting, the use amount of Si is increased properly and the use amount of Ni is reduced properly on the basis that low-carbon steel has good toughness and plasticity; meanwhile, elements such as Mo, Ti and In are contained, good mechanical performance is given to materials, the machining performance is good, wear resistance and corrosion resistance are achieved, surfaces are not likely to be worn by media, and therefore the service life is prolonged; an added composite refining agent of nanocrystallization Ca-RE intermediate phase alloy powder and graphene which are loaded by honeycomb ceramic powder in a melting solution is better in thermal stability compared with a conventional refining agent, an even and efficient refining effect can be achieved, the quality of the casting is improved, and the yield is increased; and the casting obtained after multiple times of thermal treatment is stable in performance, and energy-saving and efficient production effects are achieved.
Description
Technical field
The present invention relates to stainless cast steel part technical field, particularly relate to a kind of high silicon low nickel abrasion-proof stainless steel pump valve foundry goods 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, provides a kind of high silicon low nickel abrasion-proof stainless steel pump valve foundry goods and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of high silicon low nickel abrasion-proof stainless steel pump valve foundry goods, in this stainless cast steel part, the weight percentage of each component is: Cr:12.0-15.0%, Ni:2.8-3.5%, Cu:0.3-0.5%, Mn:1.5-2.0%, Mo:1.0-1.5%, Si:4.0-5.0%, Ti:0.5-1.0%, N:0.04-0.05%, In:0.2-0.3%, S < 0.03%, P < 0.03%, C≤0.25%, refining agent 0.3-0.4%, and surplus is Fe and inevitable impurity.
The high silicon of described one low nickel abrasion-proof stainless steel pump valve foundry goods, 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 described a kind of high silicon low nickel abrasion-proof stainless steel pump valve foundry goods, described preparation method is:
(1) each raw material except refining agent is dropped in smelting furnace according to element wt proportioning, be heated to 1520 DEG C of-1600 DEG C of meltings, add refining agent subsequently, after being uniformly mixed, liquation is warming up to 1580-1650 DEG C, refining treatment 30-40min, 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) 720-760 DEG C is heated to after the ingot casting surface treatment of gained with the temperature rise rate of 115-120 DEG C/h, insulation 4-5h, cold quenching is to 450-550 DEG C subsequently, air cooling is continued to 300-350 DEG C after insulation 2-3h, be warming up to 580-620 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 the consumption of Si element on the basis that soft steel possesses excellent toughness and plasticity, reduce the consumption of Ni, simultaneously containing Mo, Ti, the elements such as In, impart the mechanical property that material is good, machining property is excellent, wear-resistant anticorrosive, surface is not easily by Mediawear, thus increase the service life, add in liquation by the nanometer Ca-RE mesophase alloy powder of ceramic honey comb powder load and the composite refiner of Graphene better than the thermostability of conventional refinery agent, the refining effect of uniform high-efficiency can be reached, improve casting quality, improve yield rate, cast properties after repeatedly thermal treatment is stablized, reach the production effect of efficient energy-saving.
Embodiment
In this embodiment stainless cast steel part, the weight percentage of each component is: Cr:12.0%, Ni:2.8%, Cu:0.3%, Mn:1.5%, Mo:1.0%, Si:4.0%, Ti:0.5%, N:0.04%, In:0.2%, S < 0.03%, P < 0.03%, C:0.25%, refining agent 0.3%, 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 2.5h of ball milling mixing in confined conditions, ceramic honey comb powder is added after ball milling terminates, continue grinding 25min, 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 1550 DEG C of meltings, add refining agent subsequently, after being uniformly mixed, liquation is warming up to 1580 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) 740 DEG C are heated to after the ingot casting surface treatment of gained with the temperature rise rate of 115 DEG C/h, insulation 4h, subsequently cold quenching to 450 DEG C, continue air cooling to 300 DEG C after insulation 2h, be warming up to 580 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: 845.6MPa; Yield strength: 324.2MPa; Breaking tenacity: 535.6MPa; Plastix strain before fracture: 6.2%; Impelling strength: 70.6J/cm
2; Young's modulus: 230.5GPa; Erosion rate≤the 0.005mm/a of material in acid-base solution, under 500N load-up condition, the wear weight loss rate of material is 0.06%.
Claims (3)
1. a high silicon low nickel abrasion-proof stainless steel pump valve foundry goods, it is characterized in that, in this stainless cast steel part, the weight percentage of each component is: Cr:12.0-15.0%, Ni:2.8-3.5%, Cu:0.3-0.5%, Mn:1.5-2.0%, Mo:1.0-1.5%, Si:4.0-5.0%, Ti:0.5-1.0%, N:0.04-0.05%, In:0.2-0.3%, S < 0.03%, P < 0.03%, C≤0.25%, refining agent 0.3-0.4%, and surplus is Fe and inevitable impurity.
2. a kind of high silicon as claimed in claim 1 low nickel abrasion-proof stainless steel pump valve foundry goods, 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 a kind of high silicon as claimed in claim 1 low nickel abrasion-proof stainless steel pump valve foundry goods, 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 1520 DEG C of-1600 DEG C of meltings, add refining agent subsequently, after being uniformly mixed, liquation is warming up to 1580-1650 DEG C, refining treatment 30-40min, 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) 720-760 DEG C is heated to after the ingot casting surface treatment of gained with the temperature rise rate of 115-120 DEG C/h, insulation 4-5h, cold quenching is to 450-550 DEG C subsequently, air cooling is continued to 300-350 DEG C after insulation 2-3h, be warming up to 580-620 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 |
|---|---|---|---|
| CN201510833916.XA CN105441826A (en) | 2015-11-25 | 2015-11-25 | High-silicon and low-nickel wear-resistance stainless steel pump valve casting and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510833916.XA CN105441826A (en) | 2015-11-25 | 2015-11-25 | High-silicon and low-nickel wear-resistance stainless steel pump valve casting and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN105441826A true CN105441826A (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510833916.XA Pending CN105441826A (en) | 2015-11-25 | 2015-11-25 | High-silicon and low-nickel wear-resistance stainless steel pump valve casting and manufacturing method thereof |
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Citations (5)
| 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 |
| JP2002167651A (en) * | 2000-11-16 | 2002-06-11 | Pohang Research Inst Of Industrial Science & Technology | Martensitic stainless steel and its production method |
| CN1518608A (en) * | 2001-05-15 | 2004-08-04 | �����Ƹ���ʽ���� | Ferritic stainless steel and martensitic stainless steel both being excellent in machinability |
| CN104006198A (en) * | 2014-05-19 | 2014-08-27 | 安徽金大仪器有限公司 | High-precision valve resistant to abrasion and corrosion and manufacturing method thereof |
| CN104195447A (en) * | 2014-08-19 | 2014-12-10 | 张家港市飞浪泵阀有限公司 | Super duplex stainless steel used on pump valve product and preparation method thereof |
-
2015
- 2015-11-25 CN CN201510833916.XA patent/CN105441826A/en active Pending
Patent Citations (5)
| 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 |
| JP2002167651A (en) * | 2000-11-16 | 2002-06-11 | Pohang Research Inst Of Industrial Science & Technology | Martensitic stainless steel and its production method |
| CN1518608A (en) * | 2001-05-15 | 2004-08-04 | �����Ƹ���ʽ���� | Ferritic stainless steel and martensitic stainless steel both being excellent in machinability |
| CN104006198A (en) * | 2014-05-19 | 2014-08-27 | 安徽金大仪器有限公司 | High-precision valve resistant to abrasion and corrosion and manufacturing method thereof |
| CN104195447A (en) * | 2014-08-19 | 2014-12-10 | 张家港市飞浪泵阀有限公司 | Super duplex stainless steel used on pump valve product and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陆世英: "《不锈钢概论》", 31 January 2007, 中国科学技术出版社 * |
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Application publication date: 20160330 |
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