CN116274895A - Preparation method of titanium alloy cast ingot with uniform components - Google Patents
Preparation method of titanium alloy cast ingot with uniform components Download PDFInfo
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- CN116274895A CN116274895A CN202310287925.8A CN202310287925A CN116274895A CN 116274895 A CN116274895 A CN 116274895A CN 202310287925 A CN202310287925 A CN 202310287925A CN 116274895 A CN116274895 A CN 116274895A
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 245
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 95
- 238000003723 Smelting Methods 0.000 claims abstract description 56
- 238000005266 casting Methods 0.000 claims abstract description 50
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000007670 refining Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims description 58
- 238000003756 stirring Methods 0.000 claims description 55
- 239000002904 solvent Substances 0.000 claims description 20
- 238000002844 melting Methods 0.000 claims description 19
- 230000008018 melting Effects 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 15
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 238000007790 scraping Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 5
- 238000002425 crystallisation Methods 0.000 abstract description 5
- 230000008025 crystallization Effects 0.000 abstract description 5
- 238000010583 slow cooling Methods 0.000 abstract description 5
- 238000004781 supercooling Methods 0.000 abstract description 5
- 230000001590 oxidative effect Effects 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000005242 forging Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/08—Shaking, vibrating, or turning of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
- B22D27/13—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of gas pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
- B22D29/04—Handling or stripping castings or ingots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/005—Removing slag from a molten metal surface
- B22D43/007—Removing slag from a molten metal surface by using scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/06—Ingot moulds or their manufacture
- B22D7/064—Cooling the ingot moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/06—Ingot moulds or their manufacture
- B22D7/08—Divided ingot moulds
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a preparation method of a titanium alloy cast ingot with uniform components, and relates to the technical field of titanium alloy cast ingots. The preparation method of the titanium alloy ingot with uniform components comprises six processing steps of material preparation, smelting, refining, transferring, casting and demoulding. The preparation method of the titanium alloy ingot with uniform components can vibrate the liquid titanium alloy, refine grains, improve the cooling speed during crystallization, increase supercooling degree, enable the liquid titanium alloy to be subjected to external pressure, gradually reduce the internal pressure of an ingot mould in the slow cooling process of the liquid titanium alloy, reduce the increase of internal stress of the titanium alloy in the cooling process of the titanium alloy, enable the titanium alloy to be rapidly cooled through air cooling, reduce the generation of titanium alloy cracks, improve the production efficiency of the titanium alloy, also improve the purity of the liquid titanium alloy and ensure the quality of a titanium alloy finished product.
Description
Technical Field
The invention relates to the technical field of titanium alloy ingots, in particular to a preparation method of a titanium alloy ingot with uniform components.
Background
The titanium alloy is an alloy formed by adding other elements based on titanium, and can lead different types of titanium alloy to have the excellent characteristics of high strength, good corrosion resistance, high heat resistance and the like according to the added element types, the titanium alloy is commonly used for aircraft compressor discs, blades, ship pressure shells, large-size forgings, die forgings and other aviation material parts, the titanium alloy metal on the market at present needs to consume a great deal of time for natural cooling in the production process, and the liquid titanium alloy can be rapidly cooled in a water cooling mode for accelerating the production efficiency of the titanium alloy generally, but the internal stress of castings can be increased in the rapid cooling process of the titanium alloy, so that the titanium alloy is easy to crack.
Disclosure of Invention
The invention aims to provide a preparation method of a titanium alloy cast ingot with uniform components, which can solve the problems that a large amount of time is consumed for naturally cooling liquid titanium alloy, and the internal stress of a casting is increased and the titanium alloy is easy to crack in the rapid cooling process of the titanium alloy.
In order to achieve the above purpose, the present invention provides the following technical solutions: a preparation method of a titanium alloy cast ingot with uniform components comprises the following steps: s1, preparing materials: all raw materials of 100-300KG titanium alloy are put into a mixing box, and the raw materials of the titanium alloy in the mixing box are pre-stirred by stirring equipment, so that the raw materials of the titanium alloy are fully mixed together;
s2, smelting: putting the titanium alloy raw materials mixed in the step S1 into a smelting furnace, and smelting the titanium alloy raw materials into liquid titanium alloy through the smelting furnace;
s3, refining: after the titanium alloy raw materials in S2 are melted into liquid titanium alloy, adding a solvent into the liquid titanium alloy in the smelting furnace, stirring and mixing the liquid titanium alloy and the solvent in the smelting furnace through stirring equipment, so that the solvent and the liquid titanium alloy in the smelting furnace generate chemical reaction, after the liquid titanium alloy reacts with the solvent, clarifying the liquid titanium alloy for a certain time, and then scraping oxidizing slag on the top surface of the liquid titanium alloy through an iron ladle, thereby improving the precision of the liquid titanium alloy;
s4, transferring: preheating a holding barrel, placing the preheated holding barrel at a discharge hole of a smelting furnace in S2, and opening the discharge hole of the smelting furnace to enable liquid titanium alloy in the smelting furnace to flow into the holding barrel through the discharge hole;
s5, casting: spraying ingot mould coating into the ingot mould, preheating the ingot mould by a casting machine, pouring liquid titanium alloy in a smelting furnace in S4 into the ingot mould by a launder of the ingot mould, vibrating the ingot mould by a vibrator in the pouring process of the ingot mould, blocking the launder by a sealing plug, pressurizing the inside of the ingot mould by an air pump and a connecting pipe, then cooling the surface of the ingot mould by starting an industrial fan, and cooling and molding the liquid titanium alloy in the ingot mould;
s6, demolding: and (3) preheating the ingot mould again through the casting machine after the titanium alloy in the S5 is cooled and formed, and naturally separating the titanium alloy from the ingot mould by turning over the ingot mould after the titanium alloy in the ingot mould is preheated, so that a titanium alloy finished product is finally obtained.
Preferably, the raw materials of the titanium alloy in S1 are: titanium powder, vanadium powder and aluminum powder, and the raw material components of the titanium alloy are as follows: 88.80 to 91.00 percent of titanium powder, 3.50 to 4.50 percent of vanadium powder and 5.50 to 6.70 percent of aluminum powder.
Preferably, the stirring speed of the stirring device in S1 is 200-500 rpm, the stirring time of the stirring device on the titanium alloy raw material is 10-14min, the stirring speed of the stirring device in S3 is 100-200 rpm, and the stirring time of the stirring device on the titanium alloy raw material is 5-7min.
Preferably, the melting temperature of the melting furnace in the step S2 for the titanium alloy raw material is 1000-1500 ℃, and the melting time of the melting furnace for the titanium alloy raw material is 12-16min.
Preferably, the clarifying time of the liquid titanium alloy in the step S3 is 20-30min.
Preferably, in S4, the preheating temperature of the holding barrel is 700-900 degrees, and in S5, the preheating temperature of the ingot mould is 700-800 degrees.
Preferably, the ingot casting mold in the step S5 is divided into an upper part and a lower part, the upper part and the lower part of the ingot casting mold are in sealing connection through bolts, nuts and sealing rings, the inner wall of the ingot casting mold is in a square shape with a large lower part and a small upper part, the wall thickness of the ingot casting mold is 50-160 mm, and the pressure applied by the air pump to the inside of the ingot casting mold is 40-60Mp.
Preferably, in the step S5, the rotation speed of the industrial fan is 1000-3000 rpm, and the heat dissipation time of the industrial fan to the ingot casting mold is 6-12 hours.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the preparation method of the titanium alloy cast ingot with uniform components, liquid titanium alloy can be vibrated through the vibrator, grains are refined, the cooling speed during crystallization is improved, the supercooling degree is increased, the liquid titanium alloy can be pressurized to the inside of the cast ingot mould through the air pump, the pressure in the cast ingot mould is gradually reduced in the slow cooling process of the liquid titanium alloy, the increase of the internal stress of the titanium alloy can be reduced in the cooling process of the titanium alloy, the titanium alloy can be rapidly cooled through air cooling, the generation of titanium alloy cracks is reduced, and the production efficiency of the titanium alloy is improved.
(2) According to the preparation method of the titanium alloy cast ingot with uniform components, the melted liquid titanium alloy is clarified, so that oxidized impurities in the liquid titanium alloy can float on the surface of the liquid titanium alloy, workers can conveniently remove the oxidized impurities, the purity of the liquid titanium alloy is improved, the quality of a titanium alloy finished product is ensured, the ingot casting mold is divided into an upper part and a lower part, the shape of the inner wall of the ingot casting mold is in a square shape with a large lower part and a small upper part, the titanium alloy can be driven to be conveniently and easily removed from the inside of the ingot casting mold after being cooled, and the clamping phenomenon cannot be generated.
Detailed Description
The invention is further illustrated below in connection with specific embodiments.
Embodiment one:
the invention provides a technical scheme that: a preparation method of a titanium alloy cast ingot with uniform components comprises the following steps: step 1, preparing materials: all raw materials of 100KG titanium alloy are put into a mixing box, and the raw materials of the titanium alloy in the mixing box are pre-stirred by stirring equipment, so that the raw materials of the titanium alloy are fully mixed together; step 2, smelting: putting the titanium alloy raw materials mixed in the step 1 into a smelting furnace, and smelting the titanium alloy raw materials into liquid titanium alloy through the smelting furnace; step 3, refining: adding a solvent into the liquid titanium alloy in the smelting furnace after the titanium alloy raw material in the step 2 is melted into the liquid titanium alloy, stirring and mixing the liquid titanium alloy and the solvent in the smelting furnace through stirring equipment to enable the solvent and the liquid titanium alloy in the smelting furnace to generate chemical reaction, clarifying the liquid titanium alloy for a certain time after the liquid titanium alloy reacts with the solvent, scraping oxidizing slag on the top surface of the liquid titanium alloy through an iron ladle, clarifying the melted liquid titanium alloy to enable oxidizing impurities in the liquid titanium alloy to float on the surface of the liquid titanium alloy, enabling staff to conveniently remove the oxidizing impurities, improving the purity of the liquid titanium alloy, and guaranteeing the quality of a titanium alloy finished product; step 4, transferring: preheating a holding barrel, placing the preheated holding barrel at a discharge hole of a smelting furnace in the step 2, and opening the discharge hole of the smelting furnace to enable liquid titanium alloy in the smelting furnace to flow into the holding barrel through the discharge hole; step 5, casting mold: spraying ingot mold coating into the ingot mold, preheating the ingot mold through a casting machine, pouring the liquid titanium alloy in the smelting furnace in the step 4 into the ingot mold through a launder of the ingot mold, vibrating the ingot mold through a vibrator in the pouring process of the ingot mold, blocking the launder through a sealing plug, pressurizing the inside of the ingot mold through an air pump and a connecting pipe, then cooling the surface of the ingot mold by starting an industrial fan, cooling the liquid titanium alloy in the ingot mold to be molded, vibrating the liquid titanium alloy through the vibrator, refining grains, improving the cooling speed during crystallization, increasing the supercooling degree, pressurizing the inside of the ingot mold through the air pump, enabling the liquid titanium alloy to be subjected to external pressure, gradually reducing the pressure inside the ingot mold in the slow cooling process of the liquid titanium alloy, reducing the increase of internal stress of the titanium alloy in the cooling process of the titanium alloy, enabling the titanium alloy to be cooled rapidly through air cooling, reducing the generation of cracks of the titanium alloy, and improving the production efficiency of the titanium alloy; step 6, demolding: after the titanium alloy in the step 5 is cooled and molded, preheating the ingot mould again through the casting machine, and after the titanium alloy in the ingot mould is preheated, driving the titanium alloy to be conveniently and easily removed from the inside of the ingot mould through overturning the ingot mould, so that the phenomenon of clamping can not occur, the titanium alloy can be naturally separated from the inside of the ingot mould, and finally, a titanium alloy finished product is obtained.
Further, the raw materials of the titanium alloy in the step 1 are as follows: titanium powder, vanadium powder and aluminum powder, and the raw material components of the titanium alloy are as follows: 88.80% of titanium powder, 4.50% of vanadium powder and 6.70% of aluminum powder, wherein the stirring speed of stirring equipment in the step 1 is 200 rpm, the stirring time of the stirring equipment on the titanium alloy raw material is 10min, the stirring speed of stirring equipment in the step 3 is 100 rpm, and the stirring time of the stirring equipment on the titanium alloy raw material is 5min.
Further, the temperature of the melting furnace in the step 2 for melting the titanium alloy raw material is 1000 ℃, and the melting time of the melting furnace for melting the titanium alloy raw material is 12min.
Still further, the refining time of the liquid titanium alloy in step 3 is 20 minutes.
And secondly, in the step 4, the preheating temperature of the holding barrel is 700 ℃, and in the step 5, the preheating temperature of the ingot mould is 700 ℃.
And secondly, the ingot casting mould in the step 5 is divided into an upper part and a lower part, the upper part and the lower part of the ingot casting mould are in sealing connection through bolts, nuts and sealing rings, the shape of the inner wall of the ingot casting mould is in a square shape with a large lower part and a small upper part, the wall thickness of the ingot casting mould is 50mm, the pressure applied by an air pump to the inside of the ingot casting mould is 40Mp, the rotating speed of an industrial fan is 1000 revolutions per minute, and the heat dissipation time of the industrial fan to the ingot casting mould is 6 hours.
Embodiment two:
the invention provides a technical scheme that: a preparation method of a titanium alloy cast ingot with uniform components comprises the following steps: step 1, preparing materials: all raw materials of 200KG titanium alloy are put into a mixing box, and the raw materials of the titanium alloy in the mixing box are pre-stirred by stirring equipment, so that the raw materials of the titanium alloy are fully mixed together; step 2, smelting: putting the titanium alloy raw materials mixed in the step 1 into a smelting furnace, and smelting the titanium alloy raw materials into liquid titanium alloy through the smelting furnace; step 3, refining: adding a solvent into the liquid titanium alloy in the smelting furnace after the titanium alloy raw material in the step 2 is melted into the liquid titanium alloy, stirring and mixing the liquid titanium alloy and the solvent in the smelting furnace through stirring equipment to enable the solvent and the liquid titanium alloy in the smelting furnace to generate chemical reaction, clarifying the liquid titanium alloy for a certain time after the liquid titanium alloy reacts with the solvent, scraping oxidizing slag on the top surface of the liquid titanium alloy through an iron ladle, clarifying the melted liquid titanium alloy to enable oxidizing impurities in the liquid titanium alloy to float on the surface of the liquid titanium alloy, enabling staff to conveniently remove the oxidizing impurities, improving the purity of the liquid titanium alloy, and guaranteeing the quality of a titanium alloy finished product; step 4, transferring: preheating a holding barrel, placing the preheated holding barrel at a discharge hole of a smelting furnace in the step 2, and opening the discharge hole of the smelting furnace to enable liquid titanium alloy in the smelting furnace to flow into the holding barrel through the discharge hole; step 5, casting mold: spraying ingot mold coating into the ingot mold, preheating the ingot mold through a casting machine, pouring the liquid titanium alloy in the smelting furnace in the step 4 into the ingot mold through a launder of the ingot mold, vibrating the ingot mold through a vibrator in the pouring process of the ingot mold, blocking the launder through a sealing plug, pressurizing the inside of the ingot mold through an air pump and a connecting pipe, then cooling the surface of the ingot mold by starting an industrial fan, cooling the liquid titanium alloy in the ingot mold to be molded, vibrating the liquid titanium alloy through the vibrator, refining grains, improving the cooling speed during crystallization, increasing the supercooling degree, pressurizing the inside of the ingot mold through the air pump, enabling the liquid titanium alloy to be subjected to external pressure, gradually reducing the pressure inside the ingot mold in the slow cooling process of the liquid titanium alloy, reducing the increase of internal stress of the titanium alloy in the cooling process of the titanium alloy, enabling the titanium alloy to be cooled rapidly through air cooling, reducing the generation of cracks of the titanium alloy, and improving the production efficiency of the titanium alloy; step 6, demolding: after the titanium alloy in the step 5 is cooled and molded, preheating the ingot mould again through the casting machine, and after the titanium alloy in the ingot mould is preheated, driving the titanium alloy to be conveniently and easily removed from the inside of the ingot mould through overturning the ingot mould, so that the phenomenon of clamping can not occur, the titanium alloy can be naturally separated from the inside of the ingot mould, and finally, a titanium alloy finished product is obtained.
Further, the raw materials of the titanium alloy in the step 1 are as follows: titanium powder, vanadium powder and aluminum powder, and the raw material components of the titanium alloy are as follows: 89.90% of titanium powder, 4.00% of vanadium powder and 6.10% of aluminum powder, wherein the stirring speed of stirring equipment in the step 1 is 350 revolutions per minute, the stirring time of the stirring equipment on the titanium alloy raw material is 12 minutes, the stirring speed of stirring equipment in the step 3 is 150 revolutions per minute, and the stirring time of the stirring equipment on the titanium alloy raw material is 6 minutes.
Furthermore, the melting temperature of the melting furnace in the step 2 to the titanium alloy raw material is 1250 ℃, and the melting time of the melting furnace to the titanium alloy raw material is 14min.
Still further, the settling time of the liquid titanium alloy in step 3 is 25 minutes.
And secondly, in the step 4, the preheating temperature of the holding barrel is 800 ℃, and in the step 5, the preheating temperature of the ingot mould is 750 ℃.
And secondly, the ingot casting mould in the step 5 is divided into an upper part and a lower part, the upper part and the lower part of the ingot casting mould are in sealing connection through bolts, nuts and sealing rings, the shape of the inner wall of the ingot casting mould is in a square shape with a large lower part and a small upper part, the wall thickness of the ingot casting mould is 105mm, the pressure applied by an air pump to the inside of the ingot casting mould is 50Mp, the rotating speed of an industrial fan is 2000 revolutions per minute, and the heat dissipation time of the industrial fan to the ingot casting mould is 9 hours.
Embodiment III:
the invention provides a technical scheme that: a preparation method of a titanium alloy cast ingot with uniform components comprises the following steps: step 1, preparing materials: all raw materials of 300KG titanium alloy are put into a mixing box, and the raw materials of the titanium alloy in the mixing box are pre-stirred by stirring equipment, so that the raw materials of the titanium alloy are fully mixed together; step 2, smelting: putting the titanium alloy raw materials mixed in the step 1 into a smelting furnace, and smelting the titanium alloy raw materials into liquid titanium alloy through the smelting furnace; step 3, refining: adding a solvent into the liquid titanium alloy in the smelting furnace after the titanium alloy raw material in the step 2 is melted into the liquid titanium alloy, stirring and mixing the liquid titanium alloy and the solvent in the smelting furnace through stirring equipment to enable the solvent and the liquid titanium alloy in the smelting furnace to generate chemical reaction, clarifying the liquid titanium alloy for a certain time after the liquid titanium alloy reacts with the solvent, scraping oxidizing slag on the top surface of the liquid titanium alloy through an iron ladle, clarifying the melted liquid titanium alloy to enable oxidizing impurities in the liquid titanium alloy to float on the surface of the liquid titanium alloy, enabling staff to conveniently remove the oxidizing impurities, improving the purity of the liquid titanium alloy, and guaranteeing the quality of a titanium alloy finished product; step 4, transferring: preheating a holding barrel, placing the preheated holding barrel at a discharge hole of a smelting furnace in the step 2, and opening the discharge hole of the smelting furnace to enable liquid titanium alloy in the smelting furnace to flow into the holding barrel through the discharge hole; step 5, casting mold: spraying ingot mold coating into the ingot mold, preheating the ingot mold through a casting machine, pouring the liquid titanium alloy in the smelting furnace in the step 4 into the ingot mold through a launder of the ingot mold, vibrating the ingot mold through a vibrator in the pouring process of the ingot mold, blocking the launder through a sealing plug, pressurizing the inside of the ingot mold through an air pump and a connecting pipe, then cooling the surface of the ingot mold by starting an industrial fan, cooling the liquid titanium alloy in the ingot mold to be molded, vibrating the liquid titanium alloy through the vibrator, refining grains, improving the cooling speed during crystallization, increasing the supercooling degree, pressurizing the inside of the ingot mold through the air pump, enabling the liquid titanium alloy to be subjected to external pressure, gradually reducing the pressure inside the ingot mold in the slow cooling process of the liquid titanium alloy, reducing the increase of internal stress of the titanium alloy in the cooling process of the titanium alloy, enabling the titanium alloy to be cooled rapidly through air cooling, reducing the generation of cracks of the titanium alloy, and improving the production efficiency of the titanium alloy; step 6, demolding: after the titanium alloy in the step 5 is cooled and molded, preheating the ingot mould again through the casting machine, and after the titanium alloy in the ingot mould is preheated, driving the titanium alloy to be conveniently and easily removed from the inside of the ingot mould through overturning the ingot mould, so that the phenomenon of clamping can not occur, the titanium alloy can be naturally separated from the inside of the ingot mould, and finally, a titanium alloy finished product is obtained.
Further, the raw materials of the titanium alloy in the step 1 are as follows: titanium powder, vanadium powder and aluminum powder, and the raw material components of the titanium alloy are as follows: 91.00% of titanium powder, 3.50% of vanadium powder and 5.50% of aluminum powder, wherein the stirring speed of stirring equipment in the step 1 is 500 rpm, the stirring time of the stirring equipment on the titanium alloy raw material is 14min, the stirring speed of stirring equipment in the step 3 is 200 rpm, and the stirring time of the stirring equipment on the titanium alloy raw material is 7min.
Further, the melting temperature of the melting furnace in the step 2 to the titanium alloy raw material is 1500 ℃, and the melting time of the melting furnace to the titanium alloy raw material is 16min.
Still further, the settling time of the liquid titanium alloy in step 3 is 30 minutes.
And secondly, in the step 4, the preheating temperature of the holding barrel is 900 ℃, and in the step 5, the preheating temperature of the ingot mould is 800 ℃.
And secondly, the ingot casting mould in the step 5 is divided into an upper part and a lower part, the upper part and the lower part of the ingot casting mould are in sealing connection through bolts, nuts and sealing rings, the shape of the inner wall of the ingot casting mould is set to be square with the size of the lower part, the wall thickness of the ingot casting mould is 160mm, the pressure applied by an air pump to the inside of the ingot casting mould is 60Mp, the rotating speed of an industrial fan is 3000 revolutions per minute, and the heat dissipation time of the industrial fan to the ingot casting mould is 12 hours.
It can be seen from this: in the process of producing titanium alloy metal in the market at present, a great deal of time is required to be consumed for naturally cooling the liquid titanium alloy, in order to accelerate the production efficiency of the titanium alloy, a water cooling mode is generally adopted for rapidly cooling the titanium alloy, but the internal stress of a casting is increased easily to cause cracks of the titanium alloy in the rapid cooling process of the titanium alloy.
Claims (8)
1. The preparation method of the titanium alloy cast ingot with uniform components is characterized by comprising the following steps:
s1, preparing materials: all raw materials of the titanium alloy are put into a mixing box, and the raw materials of the titanium alloy in the mixing box are pre-stirred by stirring equipment;
s2, smelting: putting the titanium alloy raw materials mixed in the step S1 into a smelting furnace, and smelting the titanium alloy raw materials into liquid titanium alloy through the smelting furnace;
s3, refining: after the titanium alloy raw materials in S2 are melted into liquid titanium alloy, adding a solvent into the liquid titanium alloy in the smelting furnace, stirring and mixing the liquid titanium alloy and the solvent in the smelting furnace through stirring equipment, so that the solvent and the liquid titanium alloy in the smelting furnace generate chemical reaction, after the liquid titanium alloy reacts with the solvent, clarifying the liquid titanium alloy for a certain time, and then scraping oxide slag on the top surface of the liquid titanium alloy;
s4, transferring: preheating a holding barrel, placing the preheated holding barrel at a discharge hole of a smelting furnace in S2, and opening the discharge hole of the smelting furnace to enable liquid titanium alloy in the smelting furnace to flow into the holding barrel through the discharge hole;
s5, casting: spraying ingot mould coating into the ingot mould, preheating the ingot mould, pouring the liquid titanium alloy in the smelting furnace in S4 into the ingot mould through a launder of the ingot mould, vibrating the ingot mould through a vibrator in the pouring process of the ingot mould, blocking the launder through a sealing plug, pressurizing the inside of the ingot mould through an air pump and a connecting pipe, then starting an industrial fan, cooling the surface of the ingot mould, and cooling and molding the liquid titanium alloy in the ingot mould;
s6, demolding: and (3) preheating the ingot mould again after the titanium alloy in the S5 is cooled and formed, and naturally separating the titanium alloy from the ingot mould by turning over the ingot mould after the titanium alloy in the ingot mould is preheated, so that a titanium alloy finished product is finally obtained.
2. The method for preparing a uniform composition titanium alloy ingot according to claim 1, wherein: the raw materials of the titanium alloy in the S1 are as follows: titanium powder, vanadium powder and aluminum powder, and the raw material components of the titanium alloy are as follows: 88.80 to 91.00 percent of titanium powder, 3.50 to 4.50 percent of vanadium powder and 5.50 to 6.70 percent of aluminum powder.
3. The method for preparing a uniform composition titanium alloy ingot according to claim 2, wherein: the stirring speed of the stirring equipment in the S1 is 200-500 r/min, the stirring time of the stirring equipment on the titanium alloy raw material is 10-14min, the stirring speed of the stirring equipment in the S3 is 100-200 r/min, and the stirring time of the stirring equipment on the titanium alloy raw material is 5-7min.
4. A method for producing a compositionally homogeneous titanium alloy ingot in accordance with claim 3, wherein: and (2) melting the titanium alloy raw material by a melting furnace in the step (S2) at a temperature of 1000-1500 ℃ for 12-16min.
5. The method for preparing a uniform composition titanium alloy ingot according to claim 4, wherein: and the clarifying time of the liquid titanium alloy in the step S3 is 20-30min.
6. The method for preparing a uniform composition titanium alloy ingot according to claim 5, wherein: and in S4, the preheating temperature of the holding barrel is 700-900 ℃, and in S5, the preheating temperature of the ingot mould is 700-800 ℃.
7. The method for preparing a uniform composition titanium alloy ingot according to claim 6, wherein: the ingot casting mould in S5 is divided into an upper part and a lower part, the upper part and the lower part of the ingot casting mould are in sealing connection through bolts, nuts and sealing rings, the inner wall of the ingot casting mould is in a square shape with a large lower part and a small upper part, the wall thickness of the ingot casting mould is 50-160 mm, and the pressure applied by an air pump to the inside of the ingot casting mould is 40-60Mp.
8. The method for preparing a homogeneous titanium alloy ingot according to claim 7, wherein: and S5, the rotating speed of the industrial fan is 1000-3000 rpm, and the heat dissipation time of the industrial fan to the ingot casting mold is 6-12 hours.
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