CN105821350A - Alloy material used for marine drilling platform high-pressure mud discharging system and preparing method thereof - Google Patents
Alloy material used for marine drilling platform high-pressure mud discharging system and preparing method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
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- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- 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
- C21D1/26—Methods of annealing
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C33/04—Making ferrous alloys by melting
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- 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
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Abstract
The invention provides an alloy material used for a marine drilling platform high-pressure mud discharging system and a preparing method thereof. The alloy material comprises C, Mn, S, P, Cu, Ga, Mg, Mo, Ge, Sn, Si, Cr, Sb, Zn, Eu and Dy, and the balance Fe; Fe, Mn, Cu, Ga, Mg, Mo, Ge, Sn, Cr, Sb, Zn and RE elementary substances to be smelted are added into a vacuum chamber of a water cooling copper crucible according to the material component ratio, the vacuum chamber is vacuumized, and the elementary substances are smelted at the temperature of 960-980 DEG C; C, S, P and Si are added under the metal smelting condition, heat is preserved, and the mixture is stirred uniformly; under the inert gas pressurization condition, the product is cooled to 630 DEG C for tempering and heated to 950 DEG C for annealing, heat is preserved, and finally the temperature is reduced to the room temperature to obtain the alloy material used for the marine drilling platform high-pressure mud discharging system. The prepared product is good in rust prevention and pressure resistance and not prone to deformation.
Description
Technical field
The invention belongs to ferrous alloy field, be specifically related to a kind of marine drilling platform high-pressure slurry and discharge system alloy material and preparation method thereof.
Background technology
The increase invested deep-sea exploration and development along with the most each major oil companies, there is the situation that supply falls short of demand in deep water platform, and sign-on rate is at a relatively high, stable more than 95%, day takes price and the most significantly rises.The deep water platform of the most newly-built 3/4 i.e. signs service contract with operator before dispatching from the factory.Along with the newfound increase of deep-sea oil gas and the deepwater field having been found that put into exploitation, deep sea drilling platform will be wellr sold and in short supply.Along with the progressively recovery of global economy, the demand of oil gas is continuously increased by the whole world, and oil price is gradually gone up, and marine Oil Gas Investment and exploration and development will be more active, and the drilling platforms demand peak of a new round will be staged a comeback.If oil price is always maintained at high-order level, and keeping certain marine oil and gas discovery rate, the demand of marine drilling platform is expected to go back up to a high level of comparison.The drilling platforms being suitable for the adverse circumstances such as deep water, ultra-deep-water and polar region will be a major trend of following marine drilling platform market development.
The high-pressure slurry of marine drilling platform is discharged system and is played very important effect in drilling process.The discharge pressure of the slush pump that high-pressure slurry discharges system is the highest, high-pressure slurry starts walking pipeline from the outlet of slush pump, the pressure of high-pressure slurry is very big, in order to overcome mud gravity during travelling, and friction loss and take back the cutting that drill bit scales off.Similarly, due to the characteristic of of reciprocating pump itself, fluctuating to reduce its discharge pressure, outlet has air chamber.Therefore, the material of high-pressure slurry discharge system is particularly significant for marine drilling platform；But, marine drilling platform this still in the most perfect technology, the material of marine drilling platform high-pressure slurry discharge system is in a great extent to be groped and continuous experimental stage, how to select and manufacture good high-pressure slurry antirust, pressure, on-deformable to discharge system material, be when previous urgent problem.
Summary of the invention
In order to overcome above-mentioned deficiency, it is an object of the invention to provide a kind of marine drilling platform high-pressure slurry and discharge system alloy material and preparation method thereof, consider the cost of each composition, optimize the ratio between each composition, find the material prescription that cost performance is the highest, add rare earth metal, it is possible to efficiently solve the problems referred to above.
In order to solve above-mentioned technical problem, the present invention takes following technical scheme:
nullA kind of marine drilling platform high-pressure slurry discharges system alloy material，The material composition of alloy material and mass percent thereof be: C:0.10% ~ 0.25%，Mn:0.50% ~ 0.80%，S:0.03% ~ 0.04%，P:0.03% ~ 0.04%，Cu:0.60% ~ 1.50%，Ga:0.60% ~ 1.50%，Mg:1.30% ~ 1.70%，Mo:0.45% ~ 0.65%，Ge:0.60% ~ 1.50%，Sn:0.30% ~ 0.40%，Si:0.60% ~ 1.50%，Cr:1.0% ~ 1.15%，Sb:0.60% ~ 1.50%，Zn:1.90% ~ 2.20%，RE:0.20% ~ 0.90%，Remaining is Fe.
Further, RE includes, Eu:0.10% ~ 0.45%, Dy:0.10% ~ 0.45%.
Further, material composition and mass percent thereof are: C:0.20%, Mn:0.58%, S:0.04%, P:0.03%, Cu:0.65%, Ga:0.65%, Mg:1.36%, Mo:0.46%, Ge:0.65%, Sn:0.34%, Si:0.65%, Cr:1.10%, Sb:0.65%, Zn:1.92%, Eu:0.25%, Dy:0.25%, remaining is Fe.
Hereinafter, the restriction reason being grouped into the one-tenth of the alloy of employing in the present invention illustrates, and becomes the % related in being grouped into refer to quality %.
C:0.10% ~ 0.25%, C can form solid solution tissue in steel, improve the intensity of steel；Formation carbide tissue, can improve hardness and the wearability of steel.Therefore, C is in steel, and phosphorus content is the highest, and the intensity of steel, hardness are the highest, but plasticity, toughness also can decrease；Otherwise, phosphorus content is the lowest, and the plasticity of steel, toughness are the highest, its intensity, hardness also can decrease, for adapting to ocean condition and job requirements effect, marine drilling platform high-pressure slurry is discharged C content in system material and is defined as 0.10% ~ 0.25% by the present invention, and preferably 0.20%.
Mn:0.50% ~ 0.80%, Mn is interpolation Mn in a kind of weak alloy deoxidizer, is not only advantageous to the corrosion stability of alloy, and the intensity of alloy can also be made to improve, and can reduce hot cracking tendency, improve corrosion resistance and the welding performance of alloy.Along with Mn content increases, alloy strength increases, and discharges the concrete actual specific demand of system for adapting to marine drilling platform high-pressure slurry, and Mn content is defined as 0.50% ~ 0.80% by the present invention, and preferably 0.58%.
P:0.03% ~ 0.04%, P can improve intensity, but seriously reduce plasticity, impact flexibility, cold-bending property and solderability, especially occurring cold short during low temperature, content need to strictly control, and is usually no more than 0.050%, less than 0.045% in Welding Structure, in view of the concrete reality of navigation operation, P content is defined as 0.03% ~ 0.04% by the present invention, and preferably 0.03%.
S:0.03% ~ 0.04%, S can cause alloy hot-short, drop low-alloyed plasticity, impact flexibility, fatigue strength etc., and a certain amount of S Yu Mn forms MnS in steel, is favorably improved the element of machinability.When less than 0.001%, additive effect is insufficient, saturated more than 0.15% additive effect, makes foundry goods produce pore, be difficult to cutting and reduce its toughness, therefore S is defined as 0.03% ~ 0.04%, and preferably 0.04%.
Cu:0.60% ~ 1.50%, copper can improve intensity and the toughness of steel alloy, particularly atmospheric corrosion performance.For adapting to ocean condition and the specific demand of marine drilling platform high-pressure slurry discharge system, Cu content in material is defined as 0.60% ~ 1.50% by the present invention, and preferably 0.65%.
Ga:0.60% ~ 1.50%, Ga plays good deoxidation in steel-making, adds a small amount of Ga in steel, can refine the crystal grain of steel, improves the intensity of steel, improves impact flexibility, improves the antioxygenic property of steel, improves the rustless steel anti-corrosion capability to strong oxidizing property acids.Al also has non-oxidizability and corrosion resistance, and Ga share with chromium, silicon, is remarkably improved high temperature non-scale performance and the ability of high-temperature corrosion resistance of steel.For adapting to nautical climate condition and job requirements effect, Ga content is defined as 0.60% ~ 1.50% by the present invention, and preferably 0.65%.
Mg:1.30% ~ 1.70%, adds a small amount of magnesium in the alloy, can improve intensity and yield limit, improves the machinability of alloy.Alloy containing magnesium has excellent corrosion resistance.For adapting to ocean condition and the specific demand of marine drilling platform high-pressure slurry discharge system, Mg content in alloy material is defined as 1.30% ~ 1.70% by the present invention, and preferably 1.36%.
Mo:0.45% ~ 0.65%, the Mo energy reinforced ferrite of low content, improves intensity and the hardness of steel；Reduce the critical cooling rate of steel, improve the quenching degree of steel；Improving thermostability and the elevated temperature strength of steel, discharge the concrete actual specific demand of system for adapting to marine drilling platform high-pressure slurry, Mo content in material is defined as 0.45% ~ 0.65% by the present invention, and preferably 0.46%.
Ge:0.60% ~ 1.50%, germanium stable chemical nature, under room temperature not with air or water vapor acting, can reinforced ferrite, improve thermostability and corrosion resistance, reduce toughness and plasticity；Fusing point can be reduced in the alloy, improve mobility.For adapting to ocean condition and the specific demand of marine drilling platform high-pressure slurry discharge system, Ge content is defined as 0.60% ~ 1.50% by the present invention, and preferably 0.65%.
Sn:0.30% ~ 0.40%, adds a certain amount of stannum in steel, the resistance to corrosion of meeting raising steel in various degree and wearability.For adapting to ocean condition and the specific demand of marine drilling platform high-pressure slurry discharge system, Sn content in alloy material is defined as 0.30% ~ 0.40% by the present invention, and preferably 0.34%.
Si:0.60% ~ 1.50%, silicon is the essential element of most of diecasting alloys.It can improve the casting character of alloy.Silicon alloy has fabulous casting character and corrosion stability, can carry heavy alloyed high temperature formative nature, reduces shrinkage factor, without hot cracking tendency.For adapting to ocean condition and the specific demand of marine drilling platform high-pressure slurry discharge system, Si content in material is defined as 0.60% ~ 1.50% by the present invention, and preferably 0.65%.
Cr:1.0% ~ 1.15%, chromium can form intermetallic compound in aluminum, hinders forming core and the growth process of recrystallization, has certain invigoration effect to alloy, moreover it is possible to improves alloy ductility and reduces stress corrosion opening cracking maleate sensitivity.But meeting-place increases quenching sensitive, and making anode oxide film is yellow, and Cr content in alloy material is defined as 1.0% ~ 1.15% by the present invention, preferably 1.10%.
Sb:0.60% ~ 1.50%, adds a certain amount of antimony in steel, the resistance to corrosion of meeting raising steel in various degree and wearability.For adapting to ocean condition and the specific demand of marine drilling platform high-pressure slurry discharge system, Sb content in alloy material is defined as 0.60% ~ 1.50% by the present invention, and preferably 0.65%.
Zn:1.90% ~ 2.20%, Zn can improve mobility in the alloy, increases red brittleness, reduces corrosion resistance, therefore should control the content of zinc in prescribed limit.The alloy that zinc content is the highest but has preferable casting character and mechanical performance, machining is relatively good, for adapting to ocean condition and the specific demand of marine drilling platform high-pressure slurry discharge system, Zn content in alloy material is defined as 1.90% ~ 2.20% by the present invention, and preferably 1.92%.
RE:0.20% ~ 0.90%, rare earth element adds in alloy, it is possible to increase the mechanical strength of alloy material and corrosion resistance, increase constitutional supercooling, crystal grain thinning when making alloy casting, reduce secondary intergranular away from, reduce the gas in alloy and be mingled with, and making constituent phases tend to nodularization.Also can reduce smelt surface tension, increase mobility, beneficially casting ingot-forming, processing performance is had a significant impact；Rare earth metal can also eliminate the hydrological environment of magnetic field and complexity and marine drilling platform high-pressure slurry is discharged the harmful effect of system, thus improves the service life of marine drilling platform；Simultaneously under conditions of load is identical, hence it is evident that alleviate structural member weight.For adapting to ocean condition and the specific demand of marine drilling platform high-pressure slurry discharge system, RE content in material is defined as 0.20% ~ 0.90% by the present invention, including Eu:0.10% ~ 0.45%, Dy:0.10% ~ 0.45%, preferably Eu:0.25%, Dy:0.25%.The rare earth metal content used in the present invention is less, but can play good demagnetization and increase the strength of materials, the effect of wearability, advantageously reduces cost.
Another object of the present invention, is the preparation method providing a kind of marine drilling platform high-pressure slurry to discharge system alloy material, and making step is as follows:
Step, will treat that Fe, Mn, Cu, Ga, Mg, Mo, Ge, Sn, Cr, Sb, Zn, RE simple substance of melting, according to material composition ratio, adds in the vacuum chamber of water jacketed copper crucible, evacuation, melted under the conditions of sintering temperature is 960 DEG C ~ 980 DEG C；
Step, under conditions of metal melting, add C, S, P, Si simple substance according to material composition ratio, and be incubated 35min ~ 50min, stir；
Step, at noble gas pressurized conditions borehole cooling to 630 DEG C of tempering, it is incubated 35min ~ 50min, then is warming up to 950 DEG C of annealing, be incubated 35min ~ 50min, be finally cooled to room temperature, obtain marine drilling platform high-pressure slurry and discharge system alloy material finished product.
Further, stepIn, when the temperature of sintering is 960 DEG C ~ 970 DEG C, RE consists of Eu.
Further, stepIn, when the temperature of sintering is 970 DEG C ~ 980 DEG C, RE consists of Eu and Dy.
Further, stepParticularly as follows:
A, under Krypton or xenon atmosphere, under the pressurized conditions that pressure is 35MPa ~ 50MPa, be cooled to 630 DEG C of tempering with the speed of 35 DEG C/min ~ 50 DEG C/min, be incubated 15min ~ 40min；
B, again with the ramp of 35 DEG C/min ~ 50 DEG C/min to 950 DEG C of annealing, be incubated 15min ~ 40min；
C, finally it is cooled to room temperature, obtains marine drilling platform compressed air system alloy material finished product.
The invention have the advantage that
Marine drilling platform high-pressure slurry provided by the present invention discharges system alloy material finished product, and the material of preparation has good performance antirust, pressure, on-deformable.
Detailed description of the invention
The specific embodiment of the present invention given below, is used for being described in further detail the present invention.
Embodiment 1
Raw material components:
C:0.20%, Mn:0.58%, S:0.04%, P:0.03%, Cu:0.65%, Ga:0.65%, Mg:1.36%, Mo:0.46%, Ge:0.65%, Sn:0.34%, Si:0.65%, Cr:1.10%, Sb:0.65%, Zn:1.92%, Eu:0.25%, Dy:0.25%, remaining is Fe.
It is prepared via a method which:
Step, will treat that Fe, Mn, Cu, Ga, Mg, Mo, Ge, Sn, Cr, Sb, Zn, Eu, Dy simple substance of melting, according to material composition ratio, adds in the vacuum chamber of water jacketed copper crucible, evacuation, melted under the conditions of sintering temperature is 975 DEG C；
Step, under conditions of metal melting, add C, P, S, Si simple substance according to material composition ratio, stir, and be incubated 36min；
StepUnder the conditions of Krypton pressurization 47MPa, it is cooled to 630 DEG C with the rate of temperature fall of 44 DEG C/min, insulation 36min, it is warming up to 950 DEG C of insulation 36min annealing with the heating rate of 44 DEG C/min again, is finally down to room temperature with the rate of temperature fall of 44 DEG C/min and obtains marine drilling platform high-pressure slurry discharge system alloy material finished product.
Embodiment 2
Raw material components:
C:0.10%, Mn:0.50%, S:0.03%, P:0.03%, Cu:0.60%, Ga:0.60%, Mg:1.30%, Mo:0.45%, Ge:0.60%, Sn:0.30%, Si:0.60%, Cr:1.0%, Sb:0.60%, Zn:1.90%, Eu:0.20%, remaining is Fe.
It is prepared via a method which:
Step, will treat that Fe, Mn, Cu, Ga, Mg, Mo, Ge, Sn, Cr, Sb, Zn, Eu simple substance of melting, according to material composition ratio, adds in the vacuum chamber of water jacketed copper crucible, evacuation, melted under the conditions of sintering temperature is 960 DEG C；
Step, under conditions of metal melting, add C, P, S, Si simple substance according to material composition ratio, stir, and be incubated 35min；
StepUnder the conditions of Krypton pressurization 35MPa, it is cooled to 630 DEG C with the rate of temperature fall of 35 DEG C/min, insulation 35min, it is warming up to 950 DEG C of insulation 35min annealing with the heating rate of 35 DEG C/min again, is finally down to room temperature with the rate of temperature fall of 35 DEG C/min and obtains marine drilling platform high-pressure slurry discharge system alloy material finished product.
Embodiment 3
Raw material components:
C:0.25%, Mn:0.80%, S:0.04%, P:0.04%, Cu:1.50%, Ga:1.50%, Mg:1.70%, Mo:0.65%, Ge:1.50%, Sn:0.40%, Si:1.50%, Cr:1.15%, Sb:1.50%, Zn:2.20%, Eu:0.45%, Dy:0.45%, remaining is Fe.
It is prepared via a method which:
Step, will treat that Fe, Mn, Cu, Ga, Mg, Mo, Ge, Sn, Cr, Sb, Zn, Eu, Dy simple substance of melting, according to material composition ratio, adds in the vacuum chamber of water jacketed copper crucible, evacuation, melted under the conditions of sintering temperature is 980 DEG C；
Step, under conditions of metal melting, add C, P, S, Si simple substance according to material composition ratio, stir, and be incubated 50min；
StepUnder the conditions of xenon pressurization 50MPa, it is cooled to 630 DEG C with the rate of temperature fall of 50 DEG C/min, insulation 50min, it is warming up to 950 DEG C of insulation 50min annealing with the heating rate of 50 DEG C/min again, is finally down to room temperature with the rate of temperature fall of 50 DEG C/min and obtains marine drilling platform high-pressure slurry discharge system alloy material finished product.
Embodiment 4
Raw material components:
C:0.18%, Mn:0.65%, S:0.035%, P:0.035%, Cu:1.10%, Ga:1.10%, Mg:1.55%, Mo:0.51%, Ge:1.10%, Sn:0.35%, Si:1.10%, Cr:1.08%, Sb:1.10%, Zn:2.05%, Eu:0.275%, Dy:0.275%, remaining is Fe.
It is prepared via a method which:
Step, will treat that Fe, Mn, Cu, Ga, Mg, Mo, Ge, Sn, Cr, Sb, Zn, Eu, Dy simple substance of melting, according to material composition ratio, adds in the vacuum chamber of water jacketed copper crucible, evacuation, melted under the conditions of sintering temperature is 970 DEG C；
Step, under conditions of metal melting, add C, P, S, Si simple substance according to material composition ratio, stir, and be incubated 43min；
StepUnder the conditions of xenon pressurization 43MPa, it is cooled to 630 DEG C with the rate of temperature fall of 43 DEG C/min, insulation 43min, it is warming up to 950 DEG C of insulation 33min annealing with the heating rate of 43 DEG C/min again, is finally down to room temperature with the rate of temperature fall of 43 DEG C/min and obtains marine drilling platform high-pressure slurry discharge system alloy material finished product.
Experimental example 1
Wear resistence contrast test:
The marine drilling platform high-pressure slurry that the embodiment of the present invention 1 ~ 4 prepares is discharged system alloy material and is done slurry (quartz sand+water) wet grinding test on jetting type erosive-corrosive wear testing machine with ordinary high pressure mud discharge system alloy material, and make the corrosion resistance test of material, performance is shown in Table 1.
Table 1 wear resistence and hardness balance's result of the test
| Material | Anticorrosive multiplying power | The wear-resistant multiplying power of wet grinding | Hardness (HB) |
| Ordinary high pressure mud discharges system material | 1.0 | 1.0 | 140 |
| Embodiment 1 prepares alloy material | 2.75 | 1.79 | 187 |
| Embodiment 2 prepares alloy material | 2.70 | 1.77 | 185 |
| Embodiment 3 prepares alloy material | 2.74 | 1.75 | 183 |
| Embodiment 4 prepares alloy material | 2.75 | 1.76 | 182 |
Experimental example 2
Compared with the marine drilling platform high-pressure slurry discharge system alloy material embodiment of the present invention 1 ~ 4 prepared discharges system material with ordinary high pressure mud, its results of property such as table 2 below.
Table 2 base metal characteristic performance compares
From above-mentioned test example, the properties of alloy material of the present invention is above ordinary high pressure mud and discharges system alloy material, the special material consumption preparing alloy of the present invention is few, and relative cost is low, is more suitable for discharging system alloy material for marine drilling platform high-pressure slurry.
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.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (7)
- null1. a marine drilling platform high-pressure slurry discharges system alloy material，It is characterized in that，The material composition of described alloy material and mass percent thereof be: C:0.10% ~ 0.25%，Mn:0.50% ~ 0.80%，S:0.03% ~ 0.04%，P:0.03% ~ 0.04%，Cu:0.60% ~ 1.50%，Ga:0.60% ~ 1.50%，Mg:1.30% ~ 1.70%，Mo:0.45% ~ 0.65%，Ge:0.60% ~ 1.50%，Sn:0.30% ~ 0.40%，Si:0.60% ~ 1.50%，Cr:1.0% ~ 1.15%，Sb:0.60% ~ 1.50%，Zn:1.90% ~ 2.20%，RE:0.20% ~ 0.90%，Remaining is Fe.
- Alloy material the most according to claim 1, it is characterised in that described RE includes, Eu:0.10% ~ 0.45%, Dy:0.10% ~ 0.45%.
- Alloy material the most according to claim 1, it is characterised in that described material composition and mass percent thereof be: C:0.20%, Mn:0.58%, S:0.04%, P:0.03%, Cu:0.65%, Ga:0.65%, Mg:1.36%, Mo:0.46%, Ge:0.65%, Sn:0.34%, Si:0.65%, Cr:1.10%, Sb:0.65%, Zn:1.92%, Eu:0.25%, Dy:0.25%, remaining is Fe.
- 4. the preparation method according to alloy material described in any one of claim 1 ~ 3, it is characterised in that making step is as follows:Step, will treat that Fe, Mn, Cu, Ga, Mg, Mo, Ge, Sn, Cr, Sb, Zn, RE simple substance of melting, according to material composition ratio, adds in the vacuum chamber of water jacketed copper crucible, evacuation, melted under the conditions of sintering temperature is 960 DEG C ~ 980 DEG C；Step, under conditions of metal melting, add C, S, P, Si simple substance according to material composition ratio, and be incubated 35min ~ 50min, stir；Step, at noble gas pressurized conditions borehole cooling to 630 DEG C of tempering, it is incubated 35min ~ 50min, then is warming up to 950 DEG C of annealing, be incubated 35min ~ 50min, be finally cooled to room temperature, obtain marine drilling platform high-pressure slurry and discharge system alloy material finished product.
- Preparation method the most according to claim 4, it is characterised in that stepIn, when the temperature of described sintering is 960 DEG C ~ 970 DEG C, RE consists of Eu.
- Preparation method the most according to claim 4, it is characterised in that stepIn, when the temperature of described sintering is 970 DEG C ~ 980 DEG C, RE consists of Eu and Dy.
- Preparation method the most according to claim 4, it is characterised in that described stepParticularly as follows:A, under Krypton or xenon atmosphere, under the pressurized conditions that pressure is 35MPa ~ 50MPa, be cooled to 630 DEG C of tempering with the speed of 35 DEG C/min ~ 50 DEG C/min, be incubated 15min ~ 40min；B, again with the ramp of 35 DEG C/min ~ 50 DEG C/min to 950 DEG C of annealing, be incubated 15min ~ 40min；C, finally it is cooled to room temperature, obtains marine drilling platform compressed air system alloy material finished product.
Priority Applications (1)
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