CN105441819A - High-strength, rustproof and corrosion-resistance stainless steel pump valve casting and manufacturing method thereof - Google Patents

High-strength, rustproof and corrosion-resistance stainless steel pump valve casting and manufacturing method thereof Download PDF

Info

Publication number
CN105441819A
CN105441819A CN201510833918.9A CN201510833918A CN105441819A CN 105441819 A CN105441819 A CN 105441819A CN 201510833918 A CN201510833918 A CN 201510833918A CN 105441819 A CN105441819 A CN 105441819A
Authority
CN
China
Prior art keywords
stainless steel
pump valve
refining agent
casting
insulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510833918.9A
Other languages
Chinese (zh)
Inventor
吴寿涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tongling Jingwei Fluid Technology Co Ltd
Original Assignee
Tongling Jingwei Fluid Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tongling Jingwei Fluid Technology Co Ltd filed Critical Tongling Jingwei Fluid Technology Co Ltd
Priority to CN201510833918.9A priority Critical patent/CN105441819A/en
Publication of CN105441819A publication Critical patent/CN105441819A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/18—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
    • C22C38/46—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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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

Abstract

The invention discloses a high-strength, rustproof and corrosion-resistance stainless steel pump valve casting. The use number of elements such as CU, Nd and Zr is properly increased for the stainless steel casting on the basis that low-carbon steel has good toughness and plasticity, higher strength and hardness are achieved on casting materials, plasticity is better, the age hardening effect is good, and good rustproof and corrosion-resistance performance is achieved; a refining agent added in the casting process is used for conducting nanocrystallization on intermediate alloy powder and adsorbed in honeycomb ceramic powder and is dispersed more evenly in molten steel; the impurity removing and slag melting speed is high, efficiency is high, purity of the molten steel can be effectively improved, and the quality of the casting is improved; and stainless steel obtained after multiple times of thermal treatment can meet the requirements for complex structure features and variable use environments of a pump valve, and energy-saving and efficiemt production effects are achieved on products.

Description

A kind of high strength antirust corrosion resisting stainless steel pump valve foundry goods and preparation method thereof
Technical field
The present invention relates to stainless cast steel part technical field, particularly relate to a kind of high strength antirust corrosion resisting 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 strength antirust corrosion resisting stainless steel pump valve foundry goods and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of high strength antirust corrosion resisting stainless steel pump valve foundry goods, in this stainless cast steel part, the weight percentage of each component is: Cr:10-12%, Si:0.4-0.8%, Ni:5.0-6.0%, Cu:0.6-1.0%, V:0.05-0.08%, Mn:1.0-1.5%, N:0.1-0.3%, Nd:1.0-1.5%, Zr:0.5-0.8%, C≤0.25%, S < 0.03%, P < 0.03%, refining agent 0.3-0.5%, and all the other are mainly Fe and inevitable micro impurity element.
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 strength antirust corrosion resisting stainless steel pump valve foundry goods 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-1650 DEG C of meltings, add refining agent subsequently, after being uniformly mixed, liquation is warming up to 1600-1750 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) 750-800 DEG C is heated to after the ingot casting surface treatment of gained with the temperature rise rate of 80-100 DEG C/h, insulation 4-6h, cold quenching is to 650-750 DEG C subsequently, air cooling is continued to 300-400 DEG C after insulation 2-3h, be warming up to 550-650 DEG C with the speed of 100-150 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 Cu on the basis that soft steel possesses excellent toughness and plasticity, Nd, the consumption of the elements such as Zr, impart the higher intensity of casting material and hardness, plasticity is better, age hardening is effective, have good rust resistance and corrosion resistance performance concurrently, the refining agent added in castingprocesses is by master alloyed powder nanometer, it is adsorbed in ceramic honey comb powder, in molten steel dispersion evenly, except hydridization slag speed is fast, efficiency is high, effectively can improve the purity of molten steel, improve casting quality, the stainless steel obtained after repeatedly thermal treatment can meet the constructional feature of pump valve complexity and changeable environment for use, product reaches the production effect of efficient energy-saving.
Embodiment
In this embodiment stainless cast steel part, the weight percentage of each component is: Cr:10%, Si:0.4%, Ni:5.0%, Cu:0.6%, V:0.05%, Mn:1.0%, N:0.1%, Nd:1.0%, Zr:0.5%, C:0.1%, S < 0.03%, P < 0.03%, refining agent 0.3%, and all the other are mainly Fe and inevitable micro impurity element.
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 1580 DEG C of meltings, add refining agent subsequently, after being uniformly mixed, liquation is warming up to 1650 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) 750 DEG C are heated to after the ingot casting surface treatment of gained with the temperature rise rate of 80 DEG C/h, insulation 4h, subsequently cold quenching to 650 DEG C, continue air cooling to 300 DEG C after insulation 2h, be warming up to 550 DEG C with the speed of 100 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: 848.5MPa; Yield strength: 353.6MPa; Breaking tenacity: 570.2MPa; Plastix strain before fracture: 3.4%; Impelling strength: 74.5J/cm 2; Young's modulus: 222.4GPa; Erosion rate≤the 0.004mm/a of material in the dilute hydrochloric acid solution of 10%, the erosion rate≤0.003mm/a of material in 10% sodium hydroxide solution.

Claims (3)

1. a high strength antirust corrosion resisting 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:10-12%, Si:0.4-0.8%, Ni:5.0-6.0%, Cu:0.6-1.0%, V:0.05-0.08%, Mn:1.0-1.5%, N:0.1-0.3%, Nd:1.0-1.5%, Zr:0.5-0.8%, C≤0.25%, S < 0.03%, P < 0.03%, refining agent 0.3-0.5%, and all the other are mainly Fe and inevitable micro impurity element.
2. a kind of high strength as claimed in claim 1 antirust corrosion resisting 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 strength as claimed in claim 1 antirust corrosion resisting 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 1500 DEG C of-1650 DEG C of meltings, add refining agent subsequently, after being uniformly mixed, liquation is warming up to 1600-1750 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) 750-800 DEG C is heated to after the ingot casting surface treatment of gained with the temperature rise rate of 80-100 DEG C/h, insulation 4-6h, cold quenching is to 650-750 DEG C subsequently, air cooling is continued to 300-400 DEG C after insulation 2-3h, be warming up to 550-650 DEG C with the speed of 100-150 DEG C/h after insulation 1-2h, after insulation 2-3h, air cooling is to room temperature and get final product.
CN201510833918.9A 2015-11-25 2015-11-25 High-strength, rustproof and corrosion-resistance stainless steel pump valve casting and manufacturing method thereof Pending CN105441819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510833918.9A CN105441819A (en) 2015-11-25 2015-11-25 High-strength, rustproof and corrosion-resistance stainless steel pump valve casting and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510833918.9A CN105441819A (en) 2015-11-25 2015-11-25 High-strength, rustproof and corrosion-resistance stainless steel pump valve casting and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN105441819A true CN105441819A (en) 2016-03-30

Family

ID=55552442

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510833918.9A Pending CN105441819A (en) 2015-11-25 2015-11-25 High-strength, rustproof and corrosion-resistance stainless steel pump valve casting and manufacturing method thereof

Country Status (1)

Country Link
CN (1) CN105441819A (en)

Citations (3)

* Cited by examiner, † Cited by third party
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
CN1924058A (en) * 2005-08-30 2007-03-07 中国科学院金属研究所 Rich rare earth stainless steel with excellent anti-bacterium capability
CN103436789A (en) * 2013-08-08 2013-12-11 中钢集团邢台机械轧辊有限公司 Hot roll for rolling aluminium products and manufacturing method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
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
CN1924058A (en) * 2005-08-30 2007-03-07 中国科学院金属研究所 Rich rare earth stainless steel with excellent anti-bacterium capability
CN103436789A (en) * 2013-08-08 2013-12-11 中钢集团邢台机械轧辊有限公司 Hot roll for rolling aluminium products and manufacturing method thereof

Similar Documents

Publication Publication Date Title
CN103194640B (en) Xantal and preparation method thereof
CN102443725B (en) High-strength aluminum alloy treated by AlH3 and preparation method of high-strength aluminum alloy
JP7084137B2 (en) High-strength and uniform copper-nickel-tin alloy and manufacturing process
CN105420634A (en) High-hardness stainless steel pump valve casting resistant to high-temperature oxidization and preparation method thereof
CN105420625A (en) Stainless steel pump valve casting resistant to high-temperature corrosion of oxidizing media and preparation method of stainless steel pump valve casting
CN106756302A (en) A kind of high-strength aluminium piston alloy composite of high-temperature wearable and preparation method thereof
CN105420636A (en) High-plasticity anti-abrasion stainless steel pump valve casting and preparation method thereof
WO2011145194A1 (en) Heat-resistant cast iron type metallic short fiber, and process for production thereof
CN105420639A (en) High-strength and high-toughness stainless steel pump valve casting and preparation method
CN105463340A (en) High-toughness high-manganese low-nickel stainless steel pump valve casting and manufacturing method thereof
CN103667981B (en) A kind of alloy steel material for ball grinding machine lining board
CN105463344A (en) High-finish-degree antibacterial stainless steel pump valve casting and manufacturing method thereof
WO2012027989A1 (en) Application of aluminium-zirconium-carbon master alloy in deforming process of magnesium or magnesium alloy
CN105420620A (en) High-temperature stainless steel pump valve casting with excellent abrasion resistance and preparation method
CN108070794B (en) High-wear-resistance hot-work die steel and preparation method thereof
CN105441827A (en) Corrosion-resistance and heat-resistance stainless steel pump valve casting containing nanometer niobium carbide and manufacturing method of corrosion-resistance and heat-resistance stainless steel pump valve casting
CN114672675B (en) Nickel-rich nickel-titanium alloy gear and preparation method thereof
CN105441824A (en) Seawater-corrosion-resistance and high-elasticity stainless steel pump valve casting and manufacturing method thereof
CN105441819A (en) High-strength, rustproof and corrosion-resistance stainless steel pump valve casting and manufacturing method thereof
CN105420627A (en) High-strength anti-abrasion high-boron stainless steel pump valve casting and preparation method
CN105420637A (en) High-elasticity and anti-corrosion stainless steel pump valve casting and preparation method
CN105420626A (en) Highly anti-corrosion and anti-abrasion stainless steel pump valve casting and preparation method thereof
CN105441818A (en) High-molybdenum stainless steel pump valve casting with vibration reducing and noise reducing functions and manufacturing method of high-molybdenum stainless steel pump valve casting
CN105441817A (en) Highly-antirust low-nickel and high-copper stainless steel pump valve casting and manufacturing method thereof
CN105441825A (en) High-temperature-resistance and creep-resistance high-manganese stainless steel pump valve casting and manufacturing method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20160330

RJ01 Rejection of invention patent application after publication