CN104178704B - A kind of alloy material for boats and ships valve and preparation method thereof - Google Patents
A kind of alloy material for boats and ships valve and preparation method thereof Download PDFInfo
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Abstract
The invention provides a kind of alloy material for boats and ships valve, comprise C:0.21% ~ 0.3%, Mn:0.06% ~ 1.0%, P:0.03% ~ 0.04%, S:0.011% ~ 0.045%, Si:0.50% ~ 0.60%, Cu:0.21% ~ 0.30%, Ni:0.01% ~ 0.50%, Cr:0.48% ~ 0.50%, Mo:0.001% ~ 0.002%, V:0.02% ~ 0.03%, La:0.08% ~ 0.10%, Pb:0.21% ~ 0.30%, As:0.011% ~ 0.045%, Pr:0.01% ~ 0.03%, Ce:0.01% ~ 0.03%, Ga:0.01% ~ 0.03%, Al:0.01% ~ 0.03%, Zn:0.01% ~ 0.03%, all the other are Fe.Alloy material prepared by the present invention not only enhances the physical strength of steel, and improves the erosion resistance of steel significantly, has paramagnetism, meets ocean operation demand.
Description
Technical field
The invention belongs to ferrous alloy field, be specifically related to a kind of alloy material for boats and ships valve and preparation method.
Background technology
Shipping industry is the epitome of modern industry, is the strategic industry being related to national defense safety and the national economic development.Shipping industry not only provides equipment for water transport traffic, energy transport and ocean exploitation, and is again the main provider of naval vessels equipment, is also one of strategic industry of national economy and national defense construction.Just refer now to, shipping industry also will become a mainstay industry of China.The fast development of two more than ten years after reform and opening-up, shipping industry has become one of China's several export-oriented industrys possessing stronger international competitiveness few in number, becomes an important force of World Shipbuilding Industry.China's shipping industry shipbuilding output occupies third place in the world in continuous 11 years, in world industry portion by 2000 6% bring up to 2005 20%.Ship output to China in 2015 will reach 2400 ten thousand years gross tons, reach " the first in the world ".The future trend of world's shipbuilding, from merchant ship, will be the future development to maximization, high speed, automatization, the special purpose ship of multiple types and Convertible Container Ship will increase.Oil tanker, ore carrier, liquefied gas carrier, transport car-carrying vessel, wood cargo vessel, pharmaceutical chemicals ship etc. is had in present special purpose ship.Have in Convertible Container Ship oil and ore Convertible Container Ship, ore and goods in bulk Convertible Container Ship, automobile and goods in bulk Convertible Container Ship etc.
Marine valve is as the important system equipment of boats and ships, to be widely used in each piping system of boats and ships valve applications in ship domain, its contact medium mostly is has corrosive liquid and gas, and under this operating mode, life-time service can make valve suffer the harm such as galvanic corrosion.Therefore, in the selecting materials and select of valve, corrosion-resistant, the rust stable material main raw as valve should be chosen.Chinese patent CN101876020A patent discloses a kind of hard alloy material for valve ball and preparation method thereof, wherein Hardmetal materials is prepared from by the component of following weight percent: 40-85% wolfram varbide, 0-38% chromium carbide, 12-19% nickel and 1-3% copper.But its density is higher, and withstand voltage properties is poor under briny environment, is not suitable for long-term as navigation valve material.Chinese patent CN103403201A patent discloses a kind of Cu alloy material for seawater, it comprises the zinc (Zn) of 25-40 % by weight, the manganese (Mn) of 0.5-10 % by weight, the nickel (Ni) of 0.1-5 % by weight and surplus copper (Cu), further discloses the preparation method of described Cu alloy material and manufactures the structure in seawater by described Cu alloy material.Sea water corrosion resistant is good, but, as withstand voltage valve material, be obviously unaccommodated.
The shipbuilding situation of develop rapidly shows the seriously delayed of boats and ships main auxiliary products valve gate technology tempo, China will become the first in the world shipbuilding big country valve and also should catch up with pace of progress rapidly as the important accessory of boats and ships, wherein the material of valve is crucial, choosing valve prepared by excellent material is marine piping component designer and the stdn personnel important topic that will solve under the new situation, is also the guarantee of marine valve quality level.
Summary of the invention
In order to overcome above-mentioned prior art defect, the invention provides a kind of marine valve corrosion-resistancealloy alloy materials excellent for the resistivity of general corrosion, local corrosion and preparation method thereof, efficiently solving the problems referred to above.
In order to solve the problems of the technologies described above, the present invention takes following technical scheme: a kind of alloy material for boats and ships valve, the weight part of component consists of: C:0.21% ~ 0.3%, Mn:0.06% ~ 0.07%, P:0.03% ~ 0.04%, S:0.011% ~ 0.014%, Si:0.50% ~ 0.60%, Cu:0.21% ~ 0.30%, Ni:0.01% ~ 0.50%, Cr:0.48% ~ 0.50%, Mo:0.001% ~ 0.002%, V:0.02% ~ 0.03%, La:0.08% ~ 0.10%, Pb:0.21% ~ 0.30%, As:0.011% ~ 0.045%, Pr:0.01% ~ 0.03%, Ce:0.01% ~ 0.03%, Ga:0.01% ~ 0.03%, Al:0.01% ~ 0.03%, Zn:0.01% ~ 0.03%, all the other are Fe.
Further, the described alloy material for boats and ships valve, also comprises Pr:0.01% ~ 0.02%.
Further, the described alloy material for boats and ships valve, comprises Ce:0.01% ~ 0.02%.
Further, the described alloy material for boats and ships valve, comprises Ga:0.01% ~ 0.02%.
Further, the described alloy material for boats and ships valve, comprises Al:0.01% ~ 0.02%.
Further, the described alloy material for boats and ships valve, comprises Zn:0.01% ~ 0.02%.
Further, the described alloy material for boats and ships valve, feed composition optimum weight per-cent is as follows, C:0.27%, Mn:0.06%, P:0.03%, S:0.012%, Si:0.55%, Cu:0.25%, Ni:0.30%, Cr:0.49%, Mo:0.002%, V:0.025%, La:0.09%, Pb:0.25%, As:0.025%, Pr:0.01%, Ce:0.01%, Ga:0.01%, Al:0.02%, Zn:0.01%, all the other are Fe.
Below, be described the restriction reason that the one-tenth of the alloy material adopted in the present invention is grouped into, the % related in becoming to be grouped into refers to quality %.
C:0.21% ~ 0.3%, the Main Function of C in steel is: form sosoloid tissue, improve the intensity of steel; Formation carbide tissue, can improve hardness and the wear resistance of steel.Therefore, C is in steel, and carbon content is higher, and intensity, the hardness of steel are higher, but plasticity, toughness also can decrease; Otherwise carbon content is lower, plasticity, the toughness of steel are higher, and its intensity, hardness also can decrease, and the height of carbon content determines the purposes of steel: soft steel (carbon content < 0.25%), general as section bar and stamping material; Medium carbon steel (carbon content < 0.6%), is generally used as mechanical component; High carbon steel (carbon content > 0.7%), is generally used as instrument, cutter and mould etc.For adapting to nautical climate condition and job requirements effect, C content is defined as 0.21% ~ 0.3% by the present invention, is preferably 0.27%.
Mn:0.06% ~ 0.07%, Mn is a kind of weak reductor.Appropriate manganese effectively can improve steel strength, eliminates sulphur, oxygen to the hot-short impact of steel, improves steel heat processing characteristics, and improve the cold short tendency of steel, significantly do not reduce plasticity, the impelling strength of steel simultaneously.In general carbon steel, the content of manganese is about 0.3% ~ 0.8%.It is hardening that too high levels (reaching more than 1.0% ~ 1.5%) makes steel become fragile, and reduce rust-resisting property and the weldability of steel.For adapting to nautical climate condition and job requirements effect, consider demanganization cost, Mn content is defined as 0.06% ~ 0.07% by the present invention, is preferably 0.06%.
P:0.03% ~ 0.04%, P can improve intensity, rust-resisting property, but seriously reduce plasticity, impelling strength, cold-bending property and weldability, especially occur cold short during low temperature, content needs strict control, is generally no more than 0.050%, 0.045% is no more than in welded construction, consider the concrete reality of valve, P content is defined as 0.03% ~ 0.04% by the present invention, is preferably 0.03%.
S:0.011% ~ 0.014%, S can cause steel hot-short, reduces the plasticity of steel, impelling strength, fatigue strength and rust-resisting property etc., and common buildings steel sulphur content requires to be no more than 0.055%, should be no more than 0.050% in welded construction.A certain amount of S and Mn forms MnS in steel, contributes to the element improving machinability.Lower than 0.001% time additive effect insufficient, saturated more than 0.15% additive effect, S can reduce the mobility of molten iron, Fe3C is stoped to decompose, make foundry goods produce pore, be difficult to cut and reduce its toughness, therefore S is defined as 0.011% ~ 0.014%, be preferably 0.012%.
Si:0.50% ~ 0.60%, Si adds general carbon steel as reductor.Proper amount of silicon can improve the intensity of steel, and to plasticity, impelling strength, cold-bending property and weldability without significant detrimentally affect.Too high levels (reaching 1%), can reduce steel plasticity, impelling strength, rust-resisting property and weldability, and for adapting to nautical climate condition and job requirements effect, Si content is defined as 0.50% ~ 0.60% by the present invention, is preferably 0.55%.
Cu:0.21% ~ 0.30%, iron and steel starting material cause the enrichment of metallographic phase containing Cu, and metallographic phase Cu content is above-mentioned, can cause the change of steel performance.Cu mono-aspect is dissolved in ferrite, also can separate out along grain boundary on the other hand, lower copper content can improve its resistance to corrosion, increase intensity and the hardness of steel, but too high levels can cause penalty, reduce steel product quality, and cause " hot-short " phenomenon of steel, make to crack during rolling.For adapting to nautical climate condition and job requirements effect, Cu content is defined as 0.21% ~ 0.30% by the present invention, is preferably 0.25%.
Ni:0.01% ~ 0.50%, Ni can improve the intensity of steel, and does not reduce its plasticity, improves the low-temperature flexibility of steel; Also can reduce the critical cooling velocity of steel, improve the hardening capacity of steel; Also can expand austenitic area, be the effective element of austenitizing; Ni itself has certain solidity to corrosion, has good anti-corrosion capability to some reductibility acids, and for adapting to nautical climate condition and job requirements effect, Ni content in valve material is defined as 0.01% ~ 0.50% by the present invention, is preferably 0.30%.
Cr:0.48% ~ 0.50%, Cr, within the scope of low-alloy, has very large strengthening effect to steel, improves intensity, hardness and wear resistance; Can reduce the critical cooling velocity of steel, improve the hardening capacity of steel, improve the thermotolerance of steel, for adapting to nautical climate condition and job requirements effect, Cr content in valve material is defined as 0.48% ~ 0.50% by the present invention, is preferably 0.49%.
Mo:0.001% ~ 0.002%, the Mo energy reinforced ferrite of low levels, improves intensity and the hardness of steel; Reduce the critical cooling velocity of steel, improve the hardening capacity of steel; Improve thermotolerance and the hot strength of steel, for adapting to nautical climate condition and job requirements effect, Mo content in valve material is defined as 0.001% ~ 0.002% by the present invention, is preferably 0.002%.
V:0.02% ~ 0.03%, V can increase alloy dynamics, hardness and shock resistance, prevents particle, improves the homogeneity of iron and steel microtexture, also can improve the stability of tempering in smelting process.For adapting to nautical climate condition and job requirements effect, V content in valve material is defined as 0.02% ~ 0.03% by the present invention, is preferably 0.025%.
La:0.08% ~ 0.10%, Pr:0.01% ~ 0.03%, Ce:0.01% ~ 0.03%, La, Pr and Ce are rare earth elements, and the steel and alloy adding La, Pr and Ce has paramagnetism, are more suitable for navigation material, interact with C, P, can improve physical strength and the erosion resistance of alloy material, La content in valve is defined as 0.08% ~ 0.10% by the present invention, is preferably 0.09%; Pr is 0.01% ~ 0.03%, is preferably 0.01%; Ce is 0.01% ~ 0.03%, is preferably 0.01%.
Pb:0.21% ~ 0.30%, the character of Pb to steel has certain detrimentally affect, and lead can make the plasticity of steel slightly reduce, and makes the impact value of steel have larger reduction.In the present invention, Pb adds in casting process, and make the machinability that can improve steel in steel alloy containing a small amount of lead, Pb content in valve material is defined as 0.21% ~ 0.30% by the present invention, is preferably 0.25%.
As:0.011% ~ 0.045%, As can improve tensile strength and the yield-point of steel, strengthens anticorrosive and antioxidant property, but when arsenic content is higher (as being greater than 0.2%), then make the fragility of steel increase, unit elongation, relative reduction in area and impelling strength reduce, and impact welding.For adapting to nautical climate condition and job requirements effect, As content is defined as 0.011% ~ 0.045% by the present invention, is preferably 0.025%.
Ga:0.01% ~ 0.03%, micro-Ga all has small improvement result to the yield strength of steel, hardening capacity and corrosion stability, and the Ga remained in steel is beneficial element, can improve the toughness of steel.For adapting to nautical climate condition and job requirements effect, Ga content is defined as 0.01% ~ 0.03% by the present invention, is preferably 0.01%.
Al:0.01% ~ 0.03%, Al plays good desoxydatoin in steel-making, adds a small amount of Al in steel, and the crystal grain of energy refinement steel, improves the intensity of steel, improve impelling strength, improve the antioxidant property of steel, improves stainless steel to the anti-corrosion capability of strong oxidizing property acids.Al also has oxidation-resistance and corrosion resistance, and aluminium and chromium, silicon share, and can significantly improve the high temperature non-scale performance of steel and the ability of high-temperature corrosion resistance.For adapting to nautical climate condition and job requirements effect, Al content is defined as 0.01% ~ 0.03% by the present invention, is preferably 0.02%.
Zn:0.01% ~ 0.03%, Zn is a kind of difficult corroding metal, adds the alloy of Zn, effectively can resist the corrosion of seawater, but too high, can affect the hardness of alloy, so Zn content is defined as 0.01% ~ 0.03% by the present invention, is preferably 0.01%.
Another object of the present invention, is the making method providing a kind of alloy material for boats and ships valve, comprises the following steps,
Step S10: will treat that C, Mn, P, S, Si, Cu, Ni, Cr, Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn of melting are ground into the powder of 10 μm ~ 20 μm;
Step S11: under vacuum, by C, Mn, P, S, Fe powder 1300 DEG C ~ 1400 DEG C meltings, stirs insulation 30 minutes ~ 40 minutes;
Step S12: be cooled to 1200 DEG C ~ 1250 DEG C, add Si, Cu, Ni, Cr, stirs insulation;
Step S13: be cooled to 1100 DEG C ~ 1150 DEG C, add Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn, stirs insulation, is then cooled to room temperature and obtains alloy material finished product.
Further, the making method of described a kind of alloy material for boats and ships valve, in step s 12, stirs after adding Si, Cu and adds Ni, Cr again in 5 minutes ~ 10 minutes, stir insulation 25 minutes ~ 30 minutes.
Further, the making method of described a kind of alloy material for boats and ships valve, in step s 13, stirs after adding La, Pr, Ce and adds Mo, V, Pb, As, Ga, Al, Zn again in 10 minutes ~ 15 minutes, stir insulation 45 minutes ~ 50 minutes.La, Pr, Ce are rare earth metals, add prior to Mo, V, Pb, As, Ga, Al, Zn, are conducive to La, Pr, Ce and mix with other compositions of alloy.
Advantage of the present invention is:
Alloy provided by the present invention not only enhances the physical strength of steel, and improve the erosion resistance of steel significantly, there is paramagnetism, more meet the valve material demand of ocean operation, the present invention adds Si in stirring, after Cu, add Ni again, Cr, stir insulation, reach Si, Cu and other alloys effective integration and reaction, simultaneously, rare-earth metal La, Pr, Ce, prior to Mo, V, Pb, As, Ga, Al, Zn stirs and adds, be conducive to La, Pr, Ce mixes with other compositions of alloy, material property is made to reach optimum, prepared valve part can extend the work-ing life of navigation marine valve.
Embodiment
Below provide specific embodiments of the invention, be used for being described in further detail the present invention.
Embodiment 1
Parts by weight of raw materials forms:
C:0.27%, Mn:0.08%, P:0.03%, S:0.02%, Si:0.55%, Cu:0.25%, Ni:0.30%, Cr:0.49%, Mo:0.002%, V:0.025%, La:0.09%, Pb:0.25%, As:0.025%, Pr:0.01%, Ce:0.01%, Ga:0.01%, Al:0.02%, Zn:0.01%, all the other are Fe.
Preparation method:
Step S10: will treat that C, Mn, P, S, Si, Cu, Ni, Cr, Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn of melting are ground into the powder of 14 μm.
Step S11: and under vacuum, by C, Mn, P, S, Fe 1400 DEG C of meltings, insulation 30min.
Step S12: be cooled to after 1200 DEG C of stirrings add Si, Cu and add Ni, Cr again in 5 minutes, stirs insulation 25 minutes.
Step S13: be cooled to after 1100 DEG C of stirrings add La, Pr, Ce and add Mo, V, Pb, As, Ga, Al, Zn again in 10 minutes, stirs insulation 50 minutes, is then cooled to room temperature and obtains alloy material finished product.
Embodiment 2
Parts by weight of raw materials forms:
C:0.21%, Mn:0.06%, P:0.03%, S:0.011%, Si:0.50%, Cu:0.21%, Ni:0.01%, Cr:0.48%, Mo:0.001%, V:0.02%, La:0.08%, Pb:0.21%, As:0.011%, Pr:0.01%, Ce:0.01%, Ga:0.01%, Al:0.01%, Zn:0.01%, all the other are Fe.
Preparation method:
Step S10: will treat that C, Mn, P, S, Si, Cu, Ni, Cr, Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn of melting are ground into the powder of 10 μm.
Step S11: and under vacuum, by C, Mn, P, S, Fe 1300 DEG C of meltings, insulation 31min.
Step S12: be cooled to after 1210 DEG C of stirrings add Si, Cu and add Ni, Cr again in 6 minutes, stirs insulation 26 minutes.
Step S13: be cooled to after 1110 DEG C of stirrings add La, Pr, Ce and add Mo, V, Pb, As, Ga, Al, Zn again in 11 minutes, stirs insulation 45 minutes, is then cooled to room temperature and obtains alloy material finished product.
Embodiment 3
Parts by weight of raw materials forms:
C:0.3%, Mn:0.07%, P:0.04%, S:0.014%, Si:0.60%, Cu:0.30%, Ni:0.50%, Cr:0.50%, Mo:0.002%, V:0.03%, La:0.10%, Pb:0.30%, As:0.045%, Pr:0.02%, Ce:0.02%, Ga:0.02%, Al:0.02%, Zn:0.02%, all the other are Fe.
Preparation method:
Step S10: will treat that C, Mn, P, S, Si, Cu, Ni, Cr, Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn of melting are ground into the powder of 11 μm.
Step S11: and under vacuum, by C, Mn, P, S, Fe 1310 DEG C of meltings, insulation 32min.
S12: be cooled to after 1220 DEG C of stirrings add Si, Cu and add Ni, Cr again in 7 minutes, stirs insulation 27 minutes.
Step S13: be cooled to after 1120 DEG C of stirrings add La, Pr, Ce and add Mo, V, Pb, As, Ga, Al, Zn again in 12 minutes, stirs insulation 46 minutes, is then cooled to room temperature and obtains alloy material finished product.
Embodiment 4
Parts by weight of raw materials forms:
C:0.25%, Mn:0.065%, P:0.035%, S:0.012%, Si:0.55%, Cu:0.26%, Ni:0.26%, Cr:0.49%, Mo:0.002%, V:0.025%, La:0.09%, Pb:0.26%, As:0.028%, Pr:0.03%, Ce:0.03%, Ga:0.03%, Al:0.03%, Zn:0.03%, all the other are Fe.
Preparation method:
Step S10: will treat that C, Mn, P, S, Si, Cu, Ni, Cr, Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn of melting are ground into the powder of 12 μm.
Step S11: and under vacuum, by C, Mn, P, S, Fe 1320 DEG C of meltings, insulation 33min.
Step S12: be cooled to after 1230 DEG C of stirrings add Si, Cu and add Ni, Cr again in 8 minutes, stirs insulation 28 minutes.
Step S13: be cooled to after 1130 DEG C of stirrings add La, Pr, Ce and add Mo, V, Pb, As, Ga, Al, Zn again in 13 minutes, stirs insulation 47 minutes, is then cooled to room temperature and obtains alloy material finished product.
Embodiment 5
Parts by weight of raw materials forms:
C:0.26%, Mn:0.065%, P:0.035%, S:0.013%, Si:0.55%, Cu:0.25%, Ni:0.25%, Cr:0.49%, Mo:0.001%, V:0.025%, La:0.09%, Pb:0.25%, As:0.027%, Pr:0.01%, Ce:0.015%, Ga:0.02%, Al:0.015%, Zn:0.01%, all the other are Fe.
Preparation method:
Step S10: will treat that C, Mn, P, S, Si, Cu, Ni, Cr, Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn of melting are ground into the powder of 13 μm.
Step S11: and under vacuum, by C, Mn, P, S, Fe 1330 DEG C of meltings, insulation 34min.
Step S12: be cooled to after 1240 DEG C of stirrings add Si, Cu and add Ni, Cr again in 9 minutes, stirs insulation 29 minutes.
Step S13: be cooled to after 1140 DEG C of stirrings add La, Pr, Ce and add Mo, V, Pb, As, Ga, Al, Zn again in 14 minutes, stirs insulation 48 minutes, is then cooled to room temperature and obtains alloy material finished product.
Embodiment 6
Parts by weight of raw materials forms:
C:0.22%, Mn:0.065%, P:0.035%, S:0.013%, Si:0.55%, Cu:0.25%, Ni:0.25%, Cr:0.49%, Mo:0.001%, V:0.025%, La:0.09%, Pb:0.25%, As:0.027%, Pr:0.01%, Ce:0.015%, Ga:0.02%, Al:0.02%, Zn:0.01%, all the other are Fe.
Making method:
Step S10: will treat that C, Mn, P, S, Si, Cu, Ni, Cr, Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn of melting are ground into the powder of 15 μm.
Step S11: and under vacuum, by C, Mn, P, S, Fe 1350 DEG C of meltings, insulation 35min.
Step S12: be cooled to after 1250 DEG C of stirrings add Si, Cu and add Ni, Cr again in 10 minutes, stirs insulation 30 minutes.
Step S13: be cooled to after 1150 DEG C of stirrings add La, Pr, Ce and add Mo, V, Pb, As, Ga, Al, Zn again in 10 minutes, stirs insulation 50 minutes, is then cooled to room temperature and obtains alloy material finished product.
Embodiment 7
Parts by weight of raw materials forms:
C:0.21%, Mn:0.06%, P:0.03%, S:0.011%, Si:0.50%, Cu:0.21%, Ni:0.01%, Cr:0.48%, Mo:0.001%, V:0.02%, La:0.08%, Pb:0.21%, As:0.011%, Pr:0.01%, Ce:0.01%, Ga:0.01%, Al:0.01%, Zn:0.01%, all the other are Fe.
Preparation method:
Step S10: will treat that C, Mn, P, S, Si, Cu, Ni, Cr, Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn of melting are ground into the powder of 16 μm.
Step S11: and under vacuum, by C, Mn, P, S, Fe 1360 DEG C of meltings, insulation 30min.
Step S12: be cooled to after 1200 DEG C of stirrings add Si, Cu and add Ni, Cr again in 5 minutes, stirs insulation 25 minutes.
Step S13: be cooled to after 1100 DEG C of stirrings add La, Pr, Ce and add Mo, V, Pb, As, Ga, Al, Zn again in 15 minutes, stirs insulation 49 minutes, is then cooled to room temperature and obtains alloy material finished product.
Embodiment 8
Parts by weight of raw materials forms:
C:0.3%, Mn:0.07%, P:0.04%, S:0.014%, Si:0.60%, Cu:0.30%, Ni:0.50%, Cr:0.50%, Mo:0.002%, V:0.03%, La:0.10%, Pb:0.30%, As:0.045%, Pr:0.02%, Ce:0.02%, Ga:0.02%, Al:0.02%, Zn:0.02%, all the other are Fe.
Preparation method:
Step S10: will treat that C, Mn, P, S, Si, Cu, Ni, Cr, Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn of melting are ground into the powder of 17 μm.
Step S11: and under vacuum, by C, Mn, P, S, Fe 1370 DEG C of meltings, insulation 30min.
Step S12: be cooled to after 1200 DEG C of stirrings add Si, Cu and add Ni, Cr again in 5 minutes, stirs insulation 25 minutes.
Step S13: be cooled to after 1100 DEG C of stirrings add La, Pr, Ce and add Mo, V, Pb, As, Ga, Al, Zn again in 10 minutes, stirs insulation 50 minutes, is then cooled to room temperature and obtains alloy material finished product.
Embodiment 9
Parts by weight of raw materials forms:
C:0.25%, Mn:0.065%, P:0.035%, S:0.012%, Si:0.55%, Cu:0.26%, Ni:0.26%, Cr:0.49%, Mo:0.002%, V:0.025%, La:0.09%, Pb:0.26%, As:0.028%, Pr:0.03%, Ce:0.03%, Ga:0.03%, Al:0.03%, Zn:0.03%, all the other are Fe.
Preparation method:
Step S10: will treat that C, Mn, P, S, Si, Cu, Ni, Cr, Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn of melting are ground into the powder of 18 μm.
Step S11: and under vacuum, by C, Mn, P, S, Fe 1380 DEG C of meltings, insulation 30min.
Step S12: be cooled to after 1200 DEG C of stirrings add Si, Cu and add Ni, Cr again in 5 minutes, stirs insulation 25 minutes.
Step S13: be cooled to after 1100 DEG C of stirrings add La, Pr, Ce and add Mo, V, Pb, As, Ga, Al, Zn again in 10 minutes, stirs insulation 50 minutes, is then cooled to room temperature and obtains alloy material finished product.
Embodiment 10
Parts by weight of raw materials forms:
C:0.26%, Mn:0.065%, P:0.035%, S:0.013%, Si:0.55%, Cu:0.25%, Ni:0.25%, Cr:0.49%, Mo:0.001%, V:0.025%, La:0.09%, Pb:0.25%, As:0.027%, Pr:0.01%, Ce:0.015%, Ga:0.02%, Al:0.015%, Zn:0.01%, all the other are Fe.
Preparation method:
Step S10: will treat that C, Mn, P, S, Si, Cu, Ni, Cr, Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn of melting are ground into the powder of 19 μm.
Step S11: and under vacuum, by C, Mn, P, S, Fe 1390 DEG C of meltings, insulation 30min.
Step S12: be cooled to after 1200 DEG C of stirrings add Si, Cu and add Ni, Cr again in 5 minutes, stirs insulation 25 minutes.
Step S13: be cooled to after 1100 DEG C of stirrings add La, Pr, Ce and add Mo, V, Pb, As, Ga, Al, Zn again in 10 minutes, stirs insulation 50 minutes, is then cooled to room temperature and obtains alloy material finished product.
Embodiment 11
Parts by weight of raw materials forms:
C:0.27%, Mn:0.08%, P:0.03%, S:0.02%, Si:0.55%, Cu:0.25%, Ni:0.30%, Cr:0.49%, Mo:0.002%, V:0.025%, La:0.09%, Pb:0.25%, As:0.025%, Pr:0.01%, Ce:0.01%, Ga:0.01%, Al:0.02%, Zn:0.01%, all the other are Fe.
Preparation method:
Step S10: will treat that C, Mn, P, S, Si, Cu, Ni, Cr, Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn of melting are ground into the powder of 20 μm.
Step S11: and under vacuum, by C, Mn, P, S, Fe 1400 DEG C of meltings, insulation 30min.
Step S12: be cooled to after 1200 DEG C of stirrings add Si, Cu and add Ni, Cr again in 5 minutes, stirs insulation 25 minutes.
Step S13: be cooled to after 1100 DEG C of stirrings add La, Pr, Ce and add Mo, V, Pb, As, Ga, Al, Zn again in 10 minutes, stirs insulation 50 minutes, is then cooled to room temperature and obtains alloy material finished product.
experimental example 1
Resistance to abrasion simultaneous test:
The embodiment of the present invention 1 ~ 11 alloy material and KmTBCr26 antifriction cast iron do slurry (quartz sand+water) wet-milling and test on jetting type erosive-corrosive wear trier, heavily stressed impact abrasive wear trier does quartz sand dry grinding test, and performance is in table 1.
Table 1 resistance to abrasion comparative test result
experimental example 2
Erosion resistance simultaneous test:
Valve prepared by the embodiment of the present invention 1 ~ 11 alloy material and the standby valve of common Cr26 steel are applied on Steel Plant's Sintering Process of Iron Making, and Performance comparision is in table 2.
Table 2 erosion resistance comparative test result
experimental example 3
Comprehensive performance test:
The embodiment of the present invention 1 ~ 11 alloy material all-round property testing, the results are shown in Table 3.
Table 3 all-round property testing
From above-mentioned test example, the resistance to abrasion of alloy material of the present invention under dry, wet condition is all higher than KmTBCr26 antifriction cast iron; The erosion resistance of the valve part prepared with alloy material of the present invention under high temperature abrasive wear condition is higher than the valve part utilizing common Cr26 steel standby, and have rare earth element in material of the present invention, make the alloy of preparation have paramagnetism, be more suitable for the valve material of navigation ship.
These are only the preferred embodiments of the present invention and experimental example, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the alloy material for boats and ships valve, it is characterized in that, comprise C:0.21% ~ 0.3%, Mn:0.06% ~ 1.0%, P:0.03% ~ 0.04%, S:0.011% ~ 0.045%, Si:0.50% ~ 0.60%, Cu:0.21% ~ 0.30%, Ni:0.01% ~ 0.50%, Cr:0.48% ~ 0.50%, Mo:0.001% ~ 0.002%, V:0.02% ~ 0.03%, La:0.08% ~ 0.10%, Pb:0.21% ~ 0.30%, As:0.011% ~ 0.045%, Pr:0.01% ~ 0.03%, Ce:0.01% ~ 0.03%, Ga:0.01% ~ 0.03%, Al:0.01% ~ 0.03%, Zn:0.01% ~ 0.03%, all the other are Fe.
2. the alloy material for boats and ships valve according to claim 1, is characterized in that, the content of Pr is 0.01% ~ 0.02%.
3. the alloy material for boats and ships valve according to claim 1, is characterized in that, the content of Ce is 0.01% ~ 0.02%.
4. the alloy material for boats and ships valve according to claim 1, is characterized in that, the content of Ga is 0.01% ~ 0.02%.
5. the alloy material for boats and ships valve according to claim 1, is characterized in that, the content of Al is 0.01% ~ 0.02%.
6. the alloy material for boats and ships valve according to claim 1, is characterized in that, the content of Zn is 0.01% ~ 0.02%.
7., for an alloy material for boats and ships valve, it is characterized in that, by weight percentage containing, for example lower feed composition, C:0.27%, Mn:0.08%, P:0.03%, S:0.02%, Si:0.55%, Cu:0.25%, Ni:0.30%, Cr:0.49%, Mo:0.002%, V:0.025%, La:0.09%, Pb:0.25%, As:0.025%, Pr:0.01%, Ce:0.01%, Ga:0.01%, Al:0.02%, Zn:0.01% all the other be Fe.
8. a preparation method for the alloy material for boats and ships valve according to claim 1, is characterized in that, comprise the following steps,
Step S10: will treat that C, Mn, P, S, Si, Cu, Ni, Cr, Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn of melting are ground into the powder of 10 μm ~ 20 μm;
Step S11: under vacuum, by C, Mn, P, S, Fe powder 1300 DEG C ~ 1400 DEG C meltings, stirs and is incubated 30 minutes ~ 40 minutes simultaneously;
Step S12: be cooled to 1200 DEG C ~ 1250 DEG C, add Si, Cu, Ni, Cr powder, stirs and is incubated simultaneously;
Step S13: be cooled to 1100 DEG C ~ 1150 DEG C, add Mo, V, La, Pb, As, Pr, Ce, Ga, Al, Zn powder, stirs and is incubated simultaneously, be then cooled to room temperature and obtain alloy material finished product.
9. the preparation method of the alloy material for boats and ships valve according to claim 8, is characterized in that, in step s 12, stirs after adding Si, Cu powder and adds Ni, Cr powder again in 5 minutes ~ 10 minutes, stir and be incubated 25 minutes ~ 30 minutes simultaneously.
10. the preparation method of the alloy material for boats and ships valve according to claim 8, it is characterized in that, in step s 13, within after stirring adds La, Pr, Ce powder 10 minutes ~ 15 minutes, add Mo, V, Pb, As, Ga, Al, Zn powder again, stir and be incubated 45 minutes ~ 50 minutes simultaneously.
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