CN113976829A - Casting system and casting method for vacuum induction melting of high-temperature alloy - Google Patents
Casting system and casting method for vacuum induction melting of high-temperature alloy Download PDFInfo
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- CN113976829A CN113976829A CN202110865656.XA CN202110865656A CN113976829A CN 113976829 A CN113976829 A CN 113976829A CN 202110865656 A CN202110865656 A CN 202110865656A CN 113976829 A CN113976829 A CN 113976829A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/086—Filters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/065—Cooling or heating equipment for moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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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
- 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
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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
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
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- 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
- Y02P10/25—Process efficiency
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Abstract
The invention relates to the technical field of casting of high-temperature alloy, and discloses a casting system for vacuum induction melting of high-temperature alloy and a casting method thereof. The mould group comprises a mould steel pipe, a flow distribution disc, a filter disc and a heat preservation box body. Before pouring, preheating the die set to a set temperature and preserving heat for a certain time, preheating the chute and roasting until pouring; molten steel is injected into the chute, overflows to the chute filter plate, sequentially enters the vortex-preventing water pouring port and the zirconia honeycomb filter plate, then flows into the splitter plate, and is sequentially poured into the die steel pipe. The present invention provides a systematic improvement in the design of a casting system. The flow stability and the temperature reduction of the molten steel in the casting process are controlled, the solidification speed of the metal in the die steel pipe is inhibited, the surface quality of the cast ingot is improved, the secondary loosening of the center of the cast ingot is reduced, and the content of inclusions in the product is reduced.
Description
Technical Field
The invention relates to the technical field of smelting and casting of high-temperature alloy and other special non-ferrous metal alloys, in particular to a casting system for vacuum induction smelting of high-temperature alloy and a casting method thereof.
Background
The cast high-temperature alloy is generally smelted through vacuum induction, and then cast into a round billet with the diameter of 40-90 mm, and the round billet is used by precision casting users. The key quality requirements of customers on casting blanks comprise: surface quality, internal central shrinkage cavity, inclusion content. The quality of the product is influenced by factors such as a vacuum refining process, raw material components and the like, but the casting process at the later stage of smelting is often the key for determining the quality of the product:
1) the pouring temperature and the temperature change in the process of the pouring temperature need to be accurately controlled according to the solidification temperature of the liquid alloy;
2) controlling the flow stability and the proper pouring speed of the molten steel in the pouring process;
3) the slag inclusion in the molten steel needs to be effectively separated in the casting system, and various refractory materials used in the casting system cannot be brought into a casting blank to form inclusion due to the scouring of the liquid.
The current casting method generally uses an upper casting method from a crucible to a chute and then to a diverter tray. The method has the advantages of high efficiency, high yield (less molten steel retained in a pouring channel), and the like. But has a disadvantage in that it is not easy to accurately control the casting speed and the solidification temperature. Meanwhile, refractory material inclusions are easily brought into molten steel to influence the product quality.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides a casting system for vacuum induction melting of high-temperature alloy and a casting method thereof, which improve the design of the casting system on the aspects of casting temperature and speed control stability. The stable control of the flow of the molten steel in the casting process also helps to reduce the content of inclusions in the product.
The technical scheme is as follows: the invention provides a casting system for high-temperature alloy vacuum induction smelting, which comprises a chute and a mold group, wherein the mold group comprises mold steel pipes, a flow distribution disc, a filter disc and a heat preservation box body; the bottom end of the chute is also communicated with an anti-vortex watering opening, a chute filter plate is vertically arranged in the chute above the anti-vortex watering opening, and a zirconia honeycomb filter plate is embedded at the bottom end of the filter disc.
Preferably, a slag stopping boss is further designed in the chute, and the chute filter plate is vertically arranged between the vortex-proof watering opening and the slag stopping boss.
Preferably, the heat preservation box body is filled with quartz sand or other heat preservation materials.
Preferably, the effective flowing cross-sectional area S of the molten steel of the chute filter plate1>Effective molten steel flow cross-sectional area S of vortex-proof pouring gate2>Effective molten steel flow cross-sectional area S of zirconia honeycomb filter3>Effective molten steel flow cross-sectional area S of through hole of flow distribution plate4。
Preferably, the casting system is designed as follows:
s1: the size and the aperture of the chute filter plate are designed and determined by the required pouring speed, the total pouring time is controlled within 10-20 minutes on the basis of 1 ton of molten steel, which is equivalent to the pouring speed of the molten steel in a die steel pipe being 5-10 cm per second, the width of the chute filter plate is set to be 100-200 mm on the basis of 1 ton of molten steel, and the diameter of a through hole is 2.5-5 mm;
s2: designing a vortex-preventing structure of the vortex-preventing watering opening, wherein the size of a water outlet of the vortex-preventing watering opening is matched with the effective flow cross section area of the chute filter plate;
s3: designing a zirconia honeycomb filter sheet, and selecting the porosity of 10-15 ppi;
s4: designing the distribution plates into a plurality of groups of casting units, wherein each 3-5 mould steel pipes are one casting unit, and casting 2-3 distribution plates or 6-15 casting units in each batch by taking 1 ton of molten steel as a reference;
s5: the diameter of a through hole corresponding to each die steel pipe on the splitter disc is designed to be 8-15 mm, and the effective flow cross-sectional area of the splitter disc through hole is matched with that of the vortex-preventing watering opening and that of the chute filter plate.
The invention also discloses a casting method of the casting system based on the high-temperature alloy vacuum induction melting, which comprises the following steps:
step 1: preheating the die set to a set temperature and time, and preheating and roasting the chute to pouring;
step 2: molten steel in the crucible is injected into the chute and overflows to the chute filter plate;
and step 3: the stable molten steel enters the vortex-preventing pouring gate and flows into the zirconia honeycomb filter plate in the filter disc below;
and 4, step 4: and the molten steel flows into the splitter disc and is sequentially poured into the die steel pipe.
Preferably, the injection speed of the molten steel in the die steel pipe is 5-10 cm/s, and the pouring speed is 50-100 kg/min.
Preferably, the preheating of the die set in the step 1 is carried out at 300-600 ℃ for 3-4 hours.
Has the advantages that:
1. according to the invention, the chute filter plate is arranged in the chute, the chute filter plate is arranged between the vortex-proof watering opening and the slag-stopping boss in the chute, molten steel overflows to the chute filter plate through the slag-stopping boss in the chute, larger-size inclusion is filtered after passing through the slag-stopping boss, the flowing speed of the molten steel is further stabilized through the chute filter plate, the integral pouring speed is controlled, and the secondary shrinkage cavity of the center can be further controlled.
2. The vortex-preventing pouring gate is used at the outlet position at the bottom end of the chute, so that the flow stabilizing effect can be further achieved, and the impurity inclusion can be reduced.
3. According to the invention, the filter screen of the filter disc is embedded below the filter disc and is arranged in a honeycomb shape, so that molten steel can flow uniformly, and micro impurities in the molten steel can be further filtered and adsorbed.
4. According to the invention, the lower die steel pipe is communicated with the splitter plate, the splitter plate is used for pouring the steel pipes to the die in sequence, and a reasonable splitter plate runner design is adopted, so that the sequential pouring is ensured, the flow is stabilized, and the inclusion caused by the scouring of refractory materials is reduced.
5. The invention controls the effective flowing sectional area S of the molten steel of the chute filter plate by designing the size and the aperture of the chute filter plate, the size of the water outlet of the vortex-proof pouring gate, the size and the drift diameter of the zirconia honeycomb filter plate and the drift diameter of the through hole of the diverter plate1The effective flowing sectional area S of the molten steel is larger than that of the vortex-proof pouring gate2The effective flowing cross-sectional area S of the molten steel is larger than that of the zirconia honeycomb filter3The effective flowing sectional area S of the molten steel is larger than the sprue of the splitter plate4The stability and the continuity of the molten steel poured into the die steel pipe are ensured, the occurrence of discontinuous flow when the molten steel is poured into the die steel pipe can be avoided, and the yield of products is improved.
6. According to the invention, the mould steel pipe is designed in the heat-insulating box body, and quartz sand or other heat-insulating materials are filled in the mould steel pipe, so that the solidification and cooling speed of molten steel is controlled.
7. Before casting, the mould steel pipe in the insulation box is preheated, and the preheating is controlled to the set temperature and the insulation time, so that the solidification speed of metal and the shrinkage uniformity in the solidification process can be further controlled, and the yield of products is improved.
8. The casting method provided by the invention can improve the yield by 10%, reduce local flow break caused by uneven flow and reduce unqualified products caused by overlarge center porosity. In addition, due to the improvement of the product quality, the yield of the master alloy used by the lost foam casting customer is also improved by 2-5%. The application of part of the master alloy is oriented to a PREP powder manufacturing plant for additive manufacturing, the master alloy bar is required to be finished by finish machining, the surface roughness is required to reach 1.6 mu m, and the finished product rate is also seriously influenced by trace impurities on the smooth surface. The casting solution provided by the invention improves the product percent of pass to more than 95%.
Drawings
FIG. 1 is a block diagram of a casting system according to the present invention.
The device comprises a chute, a chute filter plate, a vortex-preventing watering opening, a filter disc, a zirconia honeycomb filter plate, a splitter disc, a heat preservation box body, a mold steel pipe, a splitter disc through hole and a slag stopping boss, wherein the chute is 1-the chute, the chute filter plate is 2-the vortex-preventing watering opening is 3-the vortex-preventing watering opening, the filter disc is 4-the zirconia honeycomb filter plate is 5-the splitter disc is 6-the splitter disc is 7-the heat preservation box body, the mold steel pipe is 8-the splitter disc through hole is 9-the splitter disc through hole is 10-the slag stopping boss.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The main materials of the refractory material selected by the invention comprise clay and high alumina, and part of the material in contact with molten steel can be solidified by using the erosion-resistant surface coating and can be used for 20 minutes at the casting temperature of 1400-1650 ℃.
The invention discloses a casting system for high-temperature alloy vacuum induction melting and a casting method thereof, and referring to figure 1, the casting system disclosed by the embodiment mainly comprises a chute 1 and a mould group, wherein the mould group comprises mould steel pipes 8, a splitter plate 6, a filter plate 4 and a heat preservation box body 7, an outlet at the bottom end of the chute 1 is positioned above the filter plate 4, the filter plate 4 is communicated with the splitter plate 6, the splitter plate 6 is communicated with a plurality of mould steel pipes 8 through splitter plate through holes 9, the mould steel pipes 8 are placed in the heat preservation box body 7, chute filter sheets 2 are vertically arranged in the chute 1, the bottom end of the chute 1 is communicated with an anti-vortex watering opening 3, and a zirconium oxide honeycomb filter sheet 5 is embedded at the bottom end of the filter plate 4. A slag stopping boss 10 is designed in the chute 1, and the chute filter plate 2 is vertically arranged between the vortex-proof watering opening 3 and the slag stopping boss 10.
And the effective flowing sectional area S of the molten steel provided with the chute filter sheet 21>Effective flow cross-sectional area S of molten steel of vortex-proof pouring gate 32>Effective molten steel flow cross-sectional area S of zirconia honeycomb filter 53>Molten steel availability of diverter disc through-hole 9Cross sectional area of flow S4。
The mould steel pipe 8 is arranged in the heat preservation box body 7, and quartz sand or other heat preservation materials are filled in the mould steel pipe, so that the solidification and cooling speed of the molten steel is controlled.
When pouring, firstly, the whole die set is preheated to the set heat preservation temperature and time, namely, the die steel pipe 8 in the heat preservation box body 7 is preheated for 300-600 ℃ for 3-4 hours, and the chute 1 is preheated and roasted until pouring. Then, molten steel in the crucible is injected into the chute 1, the pouring speed is controlled to be 50-100 kg/min, the molten steel overflows to the chute filter plate 2 through the slag blocking boss 9 in the chute 1, larger-size inclusion is filtered, and the flowing speed of the molten steel is stabilized through the chute filter plate 2. The stable molten steel enters the vortex-preventing pouring gate 3 and flows into the zirconia honeycomb filter 5 in the filter disc 4 below to filter and adsorb micro inclusions in the molten steel. Molten steel flows into the diverter disc 6 and is poured into the die steel pipe 8 in sequence.
In order to prevent local flow interruption caused by uneven molten steel flow, unqualified products caused by overlarge center porosity and unqualified products caused by inclusions during pouring, the size and the aperture of the chute filter plate 2, the size of the water outlet of the vortex-preventing pouring gate 3, the size and the drift diameter of the zirconia honeycomb filter plate 5 and the drift diameter of the sprue of the splitter plate 6 need to be designed before pouring, and proper parts are selected according to the designed size, the designed aperture and the like for installation. The design process is as follows:
s1: the size and the aperture of the chute filter sheet 2 are designed, the required pouring speed is determined, the total pouring time is controlled within 10-20 minutes on the basis of 1 ton of molten steel, the pouring speed of the molten steel in a mould pipe is 5-10 cm per second, the chute filter sheet 2 has enough flow area, so that the through holes are still effective after being blocked, and meanwhile, the diameter of the through holes cannot be too large to play the roles of flow limiting and slag blocking. Similarly, the width of the chute filter plate 2 is 100-200 mm and the diameter of the through hole is 2.5-5 mm based on 1 ton of molten steel.
S2: the vortex-preventing structure of the vortex-preventing pouring gate 3 is designed, so that the erosion of the molten steel to refractory materials and the attraction of impurities in the flowing process are reduced. The size of the water outlet of the vortex-proof watering opening 3 is matched with the effective flow cross section area of the chute filter 2, so that the molten steel is prevented from being accelerated excessively in the downflow process.
S3: the zirconia honeycomb filter 5 is designed, and the porosity of 10-15 ppi is generally selected.
S4: the split-flow trays 6 are designed into a plurality of groups of casting units, each 3-5 mould steel pipes are one casting unit, and 2-3 split-flow trays or 6-15 casting units are cast in each batch by taking 1 ton of molten steel as a reference.
S5: the diameter of the through hole corresponding to each die steel pipe 8 on the shunt plate 6 is designed to be 8-15 mm. Similarly, the flow area of the through holes 9 of the splitter plate is matched with the effective flow cross-sectional areas of the vortex-preventing pouring nozzle 3 and the chute filter 2, so that the flowing stability and continuity of the molten steel are ensured.
The design of the casting system of the present invention is further illustrated below by way of two specific embodiments:
embodiment 1:
the 2 sizes of chute cassette filters and aperture in the design casting system prevent 3 delivery port sizes down in swirl watering mouth, 5 sizes of zirconia honeycomb cassette filters and latus rectum, 6 through-hole latus rectum of reposition of redundant personnel dish:
a. the chute filter plate 2 has the size of 130 x 100mm, the number of usable holes is 175, the diameter of the usable holes is phi 4mm, and the cross section area S through which molten steel can pass1＝Nπr2＝175π*4≈2199mm2≈22cm2The effective passing sectional area of the molten steel is determined by the retention amount of the molten steel in the chute 1 and the pouring speed of the molten steel from the smelting crucible;
b. the diameter of the lower water outlet of the vortex-proof pouring gate 3 is phi 28mm, the vortex-proof boss is removed, and the cross section area through which the molten steel can pass is S2≈4.9cm2；
c. The zirconia honeycomb filter 5 is honeycomb-shaped, has a size phi 100 x 25mm, a pore diameter of 15ppi (pore diameter of about phi 1mm), and a porosity of about 80%. The passing sectional area of the molten steel of the filter plate is as follows:
d. the diverter disc 6 is designed as perThe four die steel pipes 8 are casting units, the aperture is phi 12mm, and the cross section area through which molten steel can pass is S4＝Nπr2＝4*π*62≈452mm2≈4.5cm2；
At chute filter 2, prevent swirl watering mouth 3, zirconia honeycomb filter 5, diverter plate through-hole 9, the molten steel is effective through the sectional area size: s1＞S2＞S3＞S4And the stability and the continuity of the molten steel poured into the die steel pipe 8 are further ensured, the occurrence of discontinuous flow when the molten steel is poured into the die steel pipe 8 can be avoided, and the yield of the product is improved.
Embodiment 2:
designing the diameter of a through hole 9 of the diverter disc, taking casting K418 high-temperature alloy as an example, and the density is rho 8g/cm3。
a. Using the honeycomb-shaped zirconia honeycomb filter 5 having a size of phi 100 x 25mm and a pore diameter of 15ppi, the sectional area of the zirconia honeycomb filter 5 through which molten steel can pass was S as calculated in the above embodiment 13＝4.6cm2；
b. In order to ensure the stability and continuity of the molten steel poured into the steel pipe 8 during the casting process, the cross-sectional area S of the bore of the distributor 6 is determined4＜S3；
c. The section area S of the flow distribution plate 6 through which molten steel can pass in the unit casting unit4＝Nπr2＝4*π*r2＜S3Then, then
d. The pouring temperature ensures the lowest superheat degree, so that the molten steel has enough fluidity in the die steel pipe 8 without influencing the surface quality of the cast ingot, and the volume shrinkage in the solidification process is reduced. Thus, it is necessary to control the casting speed at the same time, and to cast at a total rate of 60 kg/min.
e.1000kg vacuum induction smelting furnace with 990kg total material feeding and casting time
Zirconia honeycomb filter 5 unitsThe volume of the molten steel passing through in time is
f. 3 frames, 3 distribution trays 6 and 84 mould steel pipes 8 are arranged in each furnace, the material storage of the distribution trays 6 is about 90kg, and the weight of the bar material in each mould steel pipe 8 is about
Ensuring that the molten steel passing through the zirconia honeycomb filter 5 can stably and continuously flow into the die steel pipe 8, and the volume of the molten steel passing through the die steel pipe 8 of the flow distribution plate 6 in unit time is satisfied
Wherein N is 4. R is more than 11.4mm obtained by calculation;
in sum, r is smaller than 12.1mm and is larger than 11.4mm, and r is 12 mm.
The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. The casting system for the high-temperature alloy vacuum induction smelting comprises a chute (1) and a mould set, and is characterized in that the mould set comprises mould steel pipes (8), a splitter plate (6), a filter plate (4) and a heat preservation box body (7), an outlet at the bottom end of the chute (1) is positioned above the filter plate (4), the filter plate (4) is communicated with the splitter plate (6), the splitter plate (6) is communicated with a plurality of mould steel pipes (8) through splitter plate through holes (9), and the mould steel pipes (8) are arranged in the heat preservation box body (7); the bottom end of the chute (1) is also communicated with the vortex-preventing watering port (3), a chute filter sheet (2) is vertically arranged in the chute (1) above the vortex-preventing watering port (3), and a zirconia honeycomb filter sheet (5) is embedded at the bottom end of the filter disc (4).
2. The casting system for vacuum induction melting of high-temperature alloy according to claim 1, wherein a slag blocking boss (10) is further designed in the chute (1), and the chute filter sheet (2) is vertically arranged between the vortex-proof pouring nozzle (3) and the slag blocking boss (10).
3. The casting system for vacuum induction melting of superalloys according to claim 1, characterized in that the insulation box (7) is filled with quartz sand or other insulation material.
4. A casting system for high-temperature alloy vacuum induction melting according to any one of claims 1 to 3, wherein the effective molten steel flow cross-sectional area S of the chute filter sheet (2)1>Effective molten steel flow cross-sectional area S of vortex-preventing pouring gate (3)2>The effective flow cross-sectional area S of the molten steel of the zirconia honeycomb filter (5)3>The effective flowing cross section area S of the molten steel of the through hole (9) of the diverter disc4。
5. The superalloy vacuum induction melting casting system of claim 4, wherein the casting system is designed as follows:
s1: the size and the aperture of the chute filter sheet (2) are designed, the required pouring speed is determined, the total pouring time is controlled within 10-20 minutes on the basis of 1 ton of molten steel, the pouring speed of the molten steel in the die steel pipe (8) is 5-10 cm per second, the width of the chute filter sheet (2) is set to be 100-200 mm on the basis of 1 ton of molten steel, and the diameter of a through hole is 2.5-5 mm;
s2: designing a vortex-preventing structure of the vortex-preventing watering opening (3), wherein the size of a water outlet of the vortex-preventing watering opening (3) is matched with the effective flow cross section of the chute filter sheet (2);
s3: designing a zirconia honeycomb filter (5), and selecting the porosity of 10-15 ppi;
s4: designing the distribution plates (6) into a plurality of groups of casting units, wherein each 3-5 mould steel pipes are one casting unit, and 2-3 distribution plates or 6-15 casting units are cast in each batch by taking 1 ton of molten steel as a reference;
s5: the diameter of a through hole corresponding to each die steel pipe (8) in the splitter disc (6) is designed to be 8-15 mm, and the effective flow cross section area of the splitter disc through hole (9) is matched with the effective flow cross section area of the vortex-preventing watering opening (3) and the effective flow cross section area of the chute filter (2).
6. A casting method based on the casting system for vacuum induction melting of the high-temperature alloy as claimed in claim 4 or 5, characterized by comprising the following steps:
step 1: the mould set is preheated to a set temperature and time, and the chute (1) is preheated and roasted to be poured;
step 2: molten steel in the crucible is injected into the chute (1) and overflows to the chute filter (2);
and step 3: the stable molten steel enters the vortex-preventing pouring gate (3) and flows into the zirconia honeycomb filter (5) in the lower filter disc (4);
and 4, step 4: molten steel flows into the diverter disc (6) and is poured into the die steel pipe (8) in sequence.
7. The casting method according to claim 6, wherein the molten steel is poured into the mold steel pipe (8) at a speed of 5 to 10cm/s and at a speed of 50 to 100 kg/min.
8. The casting method according to claim 6, wherein the preheating of the mold set in the step 1 is carried out at 300 to 600 ℃ for 3 to 4 hours.
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| CN114535558A (en) * | 2022-03-09 | 2022-05-27 | 河南省西交轻质合金新材料研究院有限公司 | Control device and method for liquid flow during magnesium alloy semi-continuous casting starting |
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| CN104550893A (en) * | 2014-12-15 | 2015-04-29 | 中国航空工业集团公司北京航空材料研究院 | Filtering device for increasing purity of nickel-based superalloy powder |
| CN205128856U (en) * | 2015-11-03 | 2016-04-06 | 江苏奇纳新材料科技有限公司 | Production of high temperature foundry alloy is with casting diverging device |
| CN105750515A (en) * | 2016-04-26 | 2016-07-13 | 江苏省沙钢钢铁研究院有限公司 | Small-capacity master alloy casting system |
| CN206632349U (en) * | 2017-04-07 | 2017-11-14 | 江苏美特林科特殊合金股份有限公司 | High temperature alloy foundry alloy production chuting system |
| CN206824652U (en) * | 2017-06-14 | 2018-01-02 | 江苏奇纳新材料科技有限公司 | A kind of high temperature foundry alloy casting shunting purifier |
| CN207746384U (en) * | 2017-12-20 | 2018-08-21 | 江苏奇纳新材料科技有限公司 | A kind of alloy casting shunting purifier |
| CN212121606U (en) * | 2020-04-22 | 2020-12-11 | 宝鸡腾远新金属材料有限公司 | Casting forming die |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114535558A (en) * | 2022-03-09 | 2022-05-27 | 河南省西交轻质合金新材料研究院有限公司 | Control device and method for liquid flow during magnesium alloy semi-continuous casting starting |
| CN114535558B (en) * | 2022-03-09 | 2024-06-07 | 河南省西交轻质合金新材料研究院有限公司 | Control device and method for liquid flow during starting of magnesium alloy semi-continuous casting |
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