CN103922769A - Molten titanium and titanium alloy crucible and preparation method thereof - Google Patents
Molten titanium and titanium alloy crucible and preparation method thereof Download PDFInfo
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- CN103922769A CN103922769A CN201410123380.8A CN201410123380A CN103922769A CN 103922769 A CN103922769 A CN 103922769A CN 201410123380 A CN201410123380 A CN 201410123380A CN 103922769 A CN103922769 A CN 103922769A
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Abstract
The invention discloses a molten titanium and titanium alloy crucible which is at least formed by combining a crucible shell and a crucible lining, wherein the crucible lining is of an opened structure capable of holding a melt and is made of a composite material; the crucible shell is made of a high-temperature-resistant material with a high melting point and is of a force bearing structure capable of bearing pressure generated by titanium melts and titanium alloy melts; the crucible lining is made of a sintered composite prepared by mixing the following main components: 45-70wt% of barium oxide, 30-50wt% of zirconium oxide and 0-5wt% of fluxing agent, wherein the fluxing agent is titanium oxide, aluminum oxide or boron oxide. The invention also discloses a preparation method of the crucible; the crucible lining is assembled in a way of stacking and combining sintered bricks and can be disassembled in a decomposition way. An inner layer material of the crucible disclosed by the invention does not react with titanium; in addition, the crucible is nonstick, capable of meeting the requirements of industrialization, large capacity, low cost, easiness for maintenance and long service life, reasonable in structure and mature in preparation process.
Description
Technical field
The present invention relates to a kind of melting of metal special utensil and manufacture method thereof, particularly relate to crucible of a kind of smelting metal and preparation method thereof, be applied to titanium or titanium alloy smelting apparatus technical field.
Background technology
Titanium alloy has a series of good characteristics such as specific tenacity is high, density is little, corrosion-resistant, is widely used in modern industry the fields such as biological example science, engineering in medicine, aerospace industry, the energy, ocean, war industry.But because fusing point and the chemical property of titanium are very active; when melting; the refractory materials that liquid titanium almost can be used with all crucibles all reacts as zirconium white, magnesium oxide, silicon oxide and aluminum oxide; therefore, cause its melting can not take the crucible of conventional refractory materials manufacture to carry out vacuum induction melting.Current industrial titanium or titanium alloy melting often adopt vacuum consumable electrode electric arc skull melting and water jacketed copper crucible cooling.When vacuum electric-arc skull crucible melting, first solidify skim " scull " at Tong Bishang, play protection titanium liquid and do not polluted and heat-blocking action by crucible material, to form a molten bath in crucible.Make titanium liquid temp field inhomogeneous with formation scull very soon because water jacketed copper crucible is cooling, add that titanium alloy is short in the liquid hold-time, make to pour into a mould rear titanium alloy casting uneven components.And water jacketed copper crucible is taken away a large amount of heat.Vacuum electric-arc skull crucible melting is large with vacuum induction melting phase specific energy consumption, and smelting titanium alloy power consumption is 40 ~ 60kw/kg.In Chinese patent 201110350464.1, contriver discloses a kind of titanium or titanium alloy smelting pot material and has been made up the manufacture method of crucible of this material, taking barium carbonate and zirconium white as raw material, be pressed into crucible blank by isostatic cool pressing, at 1200 ~ 1400 DEG C of temperature, repeatedly fire synthetic barium zirconate crystal powder, barium zirconate material is aided with appropriate additive and binding agent, makes crucible through operations such as pre-treatment, moulding, presintering, sintering.This barium zirconate crucible is under 1650 ~ 1750 DEG C of temperature ranges, vacuum environment, as the container of smelting titanium alloy, in laboratory scale application, obtain good effect, have under high temperature and do not react with titanium, sticky not glutinous with alloy, energy consumption is low, alloying constituent after smelting and pouring is even, the advantage of stable performance.But the disclosed technology of above-mentioned patent, owing to adopting the technical scheme of above-mentioned materials manufacture integral crucible of thermal sintering after isostatic cool pressing base, cannot meet the requirement of suitability for industrialized production, because the required crucible volume of industrialized production is large, adopt the technology of patent 201110350464.1 to be difficult to manufacture.Its reason is: 1. suitability for industrialized production is used crucible volume large, and generally with tonnage unit, isostatic cool pressing, agglomerating plant required when this crucible entirety is manufactured require price, and equipment will be manufactured especially.2. once the too expensive damage of this crucible made in one piece cannot be repaired, necessary integral replacing, Financial cost is uneconomical.3. easy long-living crackle in this crucible manufacture made in one piece and use procedure.
Summary of the invention
In order to solve prior art problem, the object of the invention is to overcome the deficiency that prior art exists, crucible of a kind of melting titanium or titanium alloy and preparation method thereof is provided, the internal layer of crucible and skin are made up of different materials, material and the titanium of the internal layer of crucible do not react, not sticky crucible, can meet industrialization, large volume, low cost, long requirement of life-span, rational in infrastructure, and mature preparation process, easy to maintenance, after adopting crucible of the present invention to fuse gold cast, composition is even, and alloy property is stable.
Create object for reaching foregoing invention, the present invention adopts following technical proposals:
A kind of crucible of melting titanium or titanium alloy, at least combined by crucible shell and crucible lining, crucible lining has the spacious O-shaped structure that can contain titanium melt and melts of titanium alloy, crucible lining is made up of matrix material, crucible shell adopts dystectic high temperature material to make, crucible shell has the load bearing structure of the pressure that can bear titanium melt and melts of titanium alloy generation, the main ingredient of crucible lining is according to mass percentage content, by the barium oxide of 45 ~ 70 wt %, the sintered composite materials that the fusing assistant of the zirconium white of 30 ~ 50 wt % and 0 ~ 5wt % is mixed with, fusing assistant is titanium oxide, aluminum oxide or boron oxide.
As a preferred technical solution of the present invention, crucible lining is formed by composites sintering.
As another kind of optimal technical scheme of the present invention, crucible lining is cup type structure lining, cup type structure lining is at least made up of one deck cup type structural sheet, one deck cup type structural sheet is piled up and is formed by one deck Composite Sintering brick, between the Composite Sintering brick of the arbitrary neighborhood of same cup type structural sheet inside, be all connected by the aggregate erection of its recess and protuberance, the locating structure of concavo-convex cooperation between composition Composite Sintering brick, is connected the Composite Sintering brick in the same cup type structural sheet of composition cup type structure lining.
Above-mentioned cup type structure lining is preferably made up of two-layer above cup type structural sheet.
Crucible of the present invention is further preferably combined by crucible shell and crucible lining, and crucible lining has the structure matching with crucible shell shape, makes the internal surface laminating crucible lining outside surface of crucible shell, and makes crucible shell directly contact support crucible liner.
Crucible of the present invention is also further preferably combined by crucible shell, thermal insulation layer and crucible lining, thermal insulation layer is arranged between crucible shell and crucible lining, thermal insulation layer is made up of refractory materials, the inner surface configuration of the external surface shape of heat preservation sandwich layer and crucible shell matches, and the inner surface configuration of heat preservation sandwich layer and the external surface shape of crucible lining match.
Above-mentioned crucible shell preferably adopts graphite or magnesium oxide material to make.
The preparation method of the crucible of melting titanium or titanium alloy of the present invention, comprises the steps:
A. the preparation of composite material powder: be barium oxide, the zirconium white of 30 ~ 50 wt % and the fusing assistant of 0 ~ 5wt % of 45 ~ 70 wt % by mass percentage content, mix, pulverize, after oven dry, again by solid-phase synthesis or hydrothermal method, prepare synthetic composite material powder, wherein fusing assistant is titanium oxide, aluminum oxide or boron oxide; Preferably controlling temperature is 1000 ~ 1700 DEG C, and keeps 5 ~ 10 hours, adopts solid-phase synthesis to prepare synthetic composite material powder;
B. the manufacture of Composite Sintering brick: the refractory materials powder of preparing in above-mentioned steps a is made to brick parison body, then brick parison body is carried out to 8 ~ 15 hours sinter moldings under 1450 ~ 1800 DEG C of conditions, be then cooled to room temperature, obtain Composite Sintering brick; Before carrying out sintering, preferably heat up first at a slow speed and be heated to 800 ~ 1200 DEG C utilizing refractory materials powder to make brick parison body, be incubated 4 ~ 10 hours, obtain biscuit, then preferably biscuit is warming up to 900 ~ 1300 DEG C again, presintering, after 8 ~ 15 hours, is being carried out sintering;
C. the manufacture of crucible shell: adopt refractory materials to manufacture crucible shell;
D. the assembling of crucible: according to spare-crucible inner surface of outer cover shape in above-mentioned steps c, the Composite Sintering brick of preparing in above-mentioned steps b is assembled in crucible shell, form cup type structure inner sleeve, crucible lining there is can contain the spacious O-shaped structure of titanium melt and melts of titanium alloy, and crucible shell there is can bear the load bearing structure of the pressure that titanium melt and melts of titanium alloy produce, be assembled into the crucible entirety at least being combined by crucible shell and crucible lining, cup type structure lining is at least made up of one deck cup type structural sheet, one deck cup type structural sheet is piled up and is formed by one deck Composite Sintering brick.
As the preparation method's of the crucible of melting titanium or titanium alloy of the present invention improvement, in above-mentioned steps d, before in Composite Sintering brick is assembled into crucible shell, first refractory materials being close to the internal surface of crucible shell lays or installs, form thermal insulation layer, thermal insulation layer is formed in the cup type structure of crucible lining and overlap, in then Composite Sintering brick is assembled into and overlaps in glass type structure, form cup type structure inner sleeve, form the crucible entirety by three kinds of material glass holder assemblings.
The present invention compared with prior art, has following apparent outstanding substantive distinguishing features and remarkable advantage:
1. crucible of the present invention adopts vitrified brick to pile up array mode to carry out crucible assembling, and can dismantle by isolation, be easy to change and safeguard, between vitrified brick, flexibly connect the thermal stresses in can absorbing sets, heat resistanceheat resistant vibration performance is good, eliminates in entirety and manufactures the in use defect of easy long-living crackle of crucible;
2. the crucible of melting titanium or titanium alloy of the present invention can decide and adopt individual layer, bilayer or more multi-layered crucible lining according to the titanium alloy component of the size of crucible, capacity, main melting, and determine that with this crucible shell uses material and support strength, can carry out the not customization manufacture of co-content crucible by assembling crucible lining, adapt to industrialization rig-site utilization;
3. adopt crucible of the present invention to be installed on smelting titanium alloy in vacuum induction melting furnace, crucible lining does not at high temperature react with titanium, sticky not glutinous with metal, molten bath good fluidity, alloying constituent after smelting and pouring is even, and stable performance has effectively improved the quality of titanium alloy;
4. the crucible volume of melting titanium or titanium alloy of the present invention is large, preparation cost is low, the life-span is long, and mature preparation process, easy to maintenance, vitrified brick assembly and disassembly are flexible, improve the utilization ratio of the vitrified brick of crucible part, reduce the consumption of refractory materials, effectively prevent the calorific loss of titanium or titanium alloy melt, realize and saving energy and reduce the cost, be applicable to suitability for industrialized production application.
Brief description of the drawings
Fig. 1 is the structural representation of the crucible of the embodiment of the present invention one melting titanium or titanium alloy.
Fig. 2 is the structural representation of the crucible of the embodiment of the present invention two melting titanium or titanium alloy.
Fig. 3 is the sectional view along A-A line in Fig. 2.
Fig. 4 is the structural representation of the Composite Sintering brick of the embodiment of the present invention two.
Fig. 5 be the embodiment of the present invention two Composite Sintering brick pile up Method And Principle figure.
Fig. 6 is the structural representation of the crucible of the embodiment of the present invention three melting titanium or titanium alloy.
Fig. 7 is the structural representation of the crucible of the embodiment of the present invention four melting titanium or titanium alloy.
Fig. 8 is the structural representation of the crucible of the embodiment of the present invention five melting titanium or titanium alloy.
Embodiment
Details are as follows for the preferred embodiments of the present invention:
embodiment mono-:
In the present embodiment, referring to Fig. 1, a kind of crucible of melting titanium or titanium alloy, combined by crucible shell 1 and crucible lining 2, crucible lining 2 is formed by composites sintering, crucible lining 2 has the spacious O-shaped structure that can contain titanium melt and melts of titanium alloy, crucible lining 2 is made up of matrix material, crucible shell 1 adopts dystectic high temperature material to make, crucible lining 2 has the structure matching with crucible shell 1 shape, make internal surface laminating crucible lining 2 outside surfaces of crucible shell 1, and make crucible shell 1 directly contact support crucible liner 2, make crucible shell 1 can bear the pressure of titanium melt and melts of titanium alloy generation, the main ingredient of crucible lining 2 is according to mass percentage content, the sintered composite materials being mixed with by 4 above-mentioned materialss.
The preparation method of the crucible of the present embodiment melting titanium or titanium alloy, comprises the steps:
1. the manufacture of crucible overcoat: adopt graphite to manufacture crucible shell 1, as crucible overcoat, reach the functional requirement of thermal insulation, insulation, load;
2. the preparation of composite material powder: by the above-mentioned materials of mass percentage content, mix, pulverize for 10 ~ 24 hours at grinding of ball grinder, after oven dry, by solid-phase synthesis or hydrothermal method, prepare synthetic composite material powder again, wherein fusing assistant is titanium oxide, aluminum oxide or boron oxide;
3. the preparation of crucible inner sleeve: according to above-mentioned steps 1. in the inner surface configuration of crucible shell 1 of preparation, pass through isostatic cool pressing, by above-mentioned steps 2. in preparation refractory materials pressed by powder become crucible lining blank, make crucible lining blank there is the structure matching with crucible shell 1 shape, crucible lining blank is carried out under 1450 ~ 1800 DEG C of conditions to 8 ~ 15 hours sinter moldings, make the crucible lining 2 matching with crucible shell 1 shape, as crucible inner sleeve;
4. the assembling of crucible: by above-mentioned steps 3. in preparation crucible lining 2 be installed to above-mentioned steps 1. in prepare crucible shell 1 in, be assembled into crucible entirety.
The crucible of the present embodiment melting titanium or titanium alloy adopts integral sintered method to manufacture crucible lining 2, and the replaceable maintenance of crucible lining 2, does not need to change whole crucible, saves refractory consumption rate.The present embodiment crucible is installed on to smelting titanium alloy in vacuum induction melting furnace, and crucible lining 2 does not at high temperature react with titanium, sticky not glutinous with metal, molten bath good fluidity, alloying constituent after smelting and pouring is even, and stable performance has effectively improved the quality of titanium alloy.
embodiment bis-:
The present embodiment and embodiment mono-are basic identical, and special feature is:
In the present embodiment, referring to Fig. 2～Fig. 5, crucible lining 2 is cup type structure lining, cup type structure lining is made up of single-layer cup type structural sheet, single-layer cup type structural sheet is piled up and is formed by one deck Composite Sintering brick, between the Composite Sintering brick of the arbitrary neighborhood of same cup type structural sheet inside, be all connected by the aggregate erection of its recess and protuberance, the locating structure of concavo-convex cooperation between composition Composite Sintering brick, is connected the Composite Sintering brick in the same cup type structural sheet of composition cup type structure lining.
The preparation method of the crucible of the present embodiment melting titanium or titanium alloy, comprises the steps:
A. the preparation of composite material powder: by the above-mentioned materials of mass percentage content, mix, pulverize, after oven dry, then to control temperature be 1200 DEG C, and keep 10 hours, prepares synthetic composite material powder by solid-phase synthesis;
B. the manufacture of Composite Sintering brick: the refractory materials powder of preparing in above-mentioned steps a is made to brick parison body, again brick parison body is heated up first at a slow speed and is heated to 1000 DEG C, be incubated 10 hours, obtain biscuit, then biscuit is warming up to 1200 DEG C again, presintering is after 15 hours, then brick parison body carried out under 1600 DEG C of conditions to 15 hours sinter moldings, then be cooled to room temperature, obtain Composite Sintering brick;
C. the manufacture of crucible overcoat: adopt graphite to manufacture crucible shell 1, as crucible overcoat, reach the functional requirement of thermal insulation, insulation, load;
D. the assembling of crucible: according to spare-crucible shell 1 inner surface configuration in above-mentioned steps b, the Composite Sintering brick of preparing in above-mentioned steps b is assembled in crucible shell 1, form cup type structure inner sleeve, as crucible inner sleeve, crucible lining 2 there is can contain the spacious O-shaped structure of titanium melt and melts of titanium alloy, and make crucible shell 1 can bear the pressure of titanium melt and melts of titanium alloy generation, be assembled into the crucible entirety being combined by crucible shell 1 and crucible lining 2, cup type structure lining is made up of single-layer cup type structural sheet, single-layer cup type structural sheet is piled up and is formed by one deck Composite Sintering brick.
In the present embodiment, referring to Fig. 2～Fig. 5, between the vitrified brick of the present embodiment, be in clamping connection, make crucible lining 2 form individual layer lining, can immerse from the gap between vitrified brick by barrier metal melt.The present embodiment composite crucible can carry out layering assembling, rational in infrastructure, easy to maintenance.
embodiment tri-:
The present embodiment and embodiment bis-are basic identical, and special feature is:
In the present embodiment, referring to Fig. 6, cup type structure lining is made up of two-layer cup type structural sheet, is piled up and is formed by double-layer composite material vitrified brick.The present embodiment crucible lining 2 use double-layer composite material vitrified bricks are piled up and are formed, between Composite Sintering brick, be in clamping connection, make crucible lining 2 form two-layered liner molectron, can more effectively absorb the thermal vibration of metal melt, and barrier metal melt immerses from the gap between Composite Sintering brick effectively.
embodiment tetra-:
The present embodiment and embodiment tri-are basic identical, and special feature is:
In the present embodiment, referring to Fig. 7, cup type structure lining is made up of three layers of cup type structural sheet, is piled up and is formed by 3-layer composite material vitrified brick.The present embodiment crucible lining 2 use 3-layer composite material vitrified bricks are piled up and are formed, between vitrified brick, be in clamping connection, make crucible lining 2 form three layers of lining molectron, can more effectively absorb the thermal vibration of metal melt, and more effectively barrier metal melt immerses from the gap between Composite Sintering brick.
embodiment five:
The present embodiment and embodiment bis-are basic identical, and special feature is:
In the present embodiment, referring to Fig. 8, the crucible of melting titanium or titanium alloy is combined by crucible shell 1, thermal insulation layer 3 and crucible lining 2, thermal insulation layer 3 is arranged between crucible shell 1 and crucible lining 2, thermal insulation layer 3 is made up of refractory materials, the inner surface configuration of the external surface shape of heat preservation sandwich layer 3 and crucible shell 1 matches, and the external surface shape of the inner surface configuration of heat preservation sandwich layer 3 and crucible lining 2 matches.
The preparation method of the crucible of the present embodiment melting titanium or titanium alloy, comprises the steps:
A. the preparation of composite material powder: identical with embodiment bis-;
B. the manufacture of Composite Sintering brick: identical with embodiment bis-;
C. the manufacture of crucible overcoat: identical with embodiment bis-;
D. the assembling of crucible: the internal surface of first refractory materials being close to crucible shell 1 is laid or installed, form thermal insulation layer 3, thermal insulation layer 3 is formed in the cup type structure of crucible lining to be overlapped, then according to thermal insulation layer 3 inner surface configurations, the Composite Sintering brick of preparing in above-mentioned steps b is assembled in glass type structure in cover, form cup type structure inner sleeve, as crucible inner sleeve, crucible lining 2 there is can contain the spacious O-shaped structure of titanium melt and melts of titanium alloy, and make crucible shell 1 can bear the pressure of titanium melt and melts of titanium alloy generation, i.e. assembling forms the crucible entirety by three kinds of material glass holder assemblings.
Referring to Fig. 8, the present embodiment composite crucible is accompanied with thermal insulation layer 3, can significantly improve the heat-blocking action of crucible, to form molten bath in crucible, makes titanium liquid temp field more even, and makes to pour into a mould rear titanium alloy casting homogeneity of ingredients and significantly improve.
By reference to the accompanying drawings the embodiment of the present invention is illustrated above; but the invention is not restricted to above-described embodiment; can also make multiple variation according to the object of innovation and creation of the present invention; the change made under all spirit according to technical solution of the present invention and principle, modification, substitute, combination, simplify; all should be equivalent substitute mode; as long as goal of the invention according to the invention; only otherwise deviate from know-why and the inventive concept of crucible of melting titanium or titanium alloy of the present invention and preparation method thereof, all belong to protection scope of the present invention.
Claims (10)
1. the crucible of a melting titanium or titanium alloy, it is characterized in that: at least combined by crucible shell (1) and crucible lining (2), described crucible lining (2) has the spacious O-shaped structure that can contain titanium melt and melts of titanium alloy, described crucible lining (2) is made up of matrix material, described crucible shell (1) adopts dystectic high temperature material to make, described crucible shell (1) has the load bearing structure of the pressure that can bear titanium melt and melts of titanium alloy generation, the main ingredient of described crucible lining (2) is according to mass percentage content, by the barium oxide of 45 ~ 70 wt %, the sintered composite materials that the fusing assistant of the zirconium white of 30 ~ 50 wt % and 0 ~ 5wt % is mixed with, described fusing assistant is titanium oxide, aluminum oxide or boron oxide.
2. the crucible of melting titanium or titanium alloy according to claim 1, is characterized in that: described crucible lining (2) is formed by composites sintering.
3. the crucible of melting titanium or titanium alloy according to claim 1, it is characterized in that: described crucible lining (2) is cup type structure lining, described cup type structure lining is at least made up of one deck cup type structural sheet, one deck cup type structural sheet is piled up and is formed by one deck Composite Sintering brick, between the Composite Sintering brick of the arbitrary neighborhood of same cup type structural sheet inside, be all connected by the aggregate erection of its recess and protuberance, the locating structure of concavo-convex cooperation between composition Composite Sintering brick, Composite Sintering brick in the same cup type structural sheet of composition cup type structure lining is connected.
4. the crucible of melting titanium or titanium alloy according to claim 3, is characterized in that: described cup type structure lining is made up of a two-layer above cup type structural sheet.
5. according to the crucible of melting titanium or titanium alloy described in any one in claim 1～4, it is characterized in that: combined by crucible shell (1) and crucible lining (2), described crucible lining (2) has the structure matching with described crucible shell (1) shape, make the internal surface of described crucible shell (1) described crucible lining (2) outside surface of fitting, and make described crucible shell (1) directly contact support described crucible lining (2).
6. according to the crucible of melting titanium or titanium alloy described in any one in claim 1～4, it is characterized in that: combined by crucible shell (1), thermal insulation layer (3) and crucible lining (2), described thermal insulation layer (3) is arranged between described crucible shell (1) and described crucible lining (2), described thermal insulation layer (3) is made up of refractory materials, the inner surface configuration of the external surface shape of described heat preservation sandwich layer (3) and described crucible shell (1) matches, and the external surface shape of the inner surface configuration of described heat preservation sandwich layer (3) and described crucible lining (2) matches.
7. according to the crucible of melting titanium or titanium alloy described in any one in claim 1～4, it is characterized in that: described crucible shell (1) adopts graphite or magnesium oxide material to make.
8. a preparation method for the crucible of melting titanium or titanium alloy described in claim 1, is characterized in that, comprises the steps:
A. the preparation of composite material powder: be barium oxide, the zirconium white of 30 ~ 50 wt % and the fusing assistant of 0 ~ 5wt % of 45 ~ 70 wt % by mass percentage content, mix, pulverize, after oven dry, again by solid-phase synthesis or hydrothermal method, prepare synthetic composite material powder, wherein fusing assistant is titanium oxide, aluminum oxide or boron oxide;
B. the manufacture of Composite Sintering brick: the refractory materials powder of preparing in above-mentioned steps a is made to brick parison body, then brick parison body is carried out to 8 ~ 15 hours sinter moldings under 1450 ~ 1800 DEG C of conditions, be then cooled to room temperature, obtain Composite Sintering brick;
C. the manufacture of crucible shell: adopt refractory materials to manufacture crucible shell;
D. the assembling of crucible: according to spare-crucible inner surface of outer cover shape in above-mentioned steps c, the Composite Sintering brick of preparing in above-mentioned steps b is assembled in crucible shell, form cup type structure inner sleeve, crucible lining there is can contain the spacious O-shaped structure of titanium melt and melts of titanium alloy, and crucible shell there is can bear the load bearing structure of the pressure that titanium melt and melts of titanium alloy produce, be assembled into the crucible entirety at least being combined by crucible shell and crucible lining, cup type structure lining is at least made up of one deck cup type structural sheet, one deck cup type structural sheet is piled up and is formed by one deck Composite Sintering brick.
9. the preparation method of the crucible of melting titanium or titanium alloy according to claim 8, is characterized in that: in above-mentioned steps a, controlling temperature is 1000 ~ 1700 DEG C, and keeps 5 ~ 10 hours, adopts solid-phase synthesis to prepare synthetic composite material powder; In above-mentioned steps b, before carrying out sintering, heat up first at a slow speed and be heated to 800 ~ 1200 DEG C utilizing refractory materials powder to make brick parison body, be incubated 4 ~ 10 hours, obtain biscuit; Then biscuit is warming up to 900 ~ 1300 DEG C again, presintering is after 8 ~ 15 hours, then carries out sintering.
10. the preparation method of the crucible of melting titanium or titanium alloy according to claim 8 or claim 9, it is characterized in that: in above-mentioned steps d, before in Composite Sintering brick is assembled into crucible shell, first refractory materials being close to the internal surface of crucible shell lays or installs, form thermal insulation layer, thermal insulation layer is formed in the cup type structure of crucible lining and overlap, in then Composite Sintering brick is assembled into and overlaps in glass type structure, form cup type structure inner sleeve, form the crucible entirety by three kinds of material glass holder assemblings.
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| CN105294071A (en) * | 2015-11-05 | 2016-02-03 | 武汉科技大学 | Lining type container used for precious metal crucible and preparation method thereof |
| CN107619942A (en) * | 2017-10-26 | 2018-01-23 | 西部超导材料科技股份有限公司 | A kind of consumable electrode vacuum furnace titanium or titanium alloy electrode and preparation method thereof |
| CN110484743A (en) * | 2019-08-13 | 2019-11-22 | 洛阳双瑞精铸钛业有限公司 | A kind of electron beam cold hearth melting furnace inexpensive scull and preparation method thereof |
| CN111187928A (en) * | 2020-02-10 | 2020-05-22 | 中国科学院金属研究所 | Smelting method of metal material |
| CN112374884A (en) * | 2020-12-15 | 2021-02-19 | 湖南仁海科技材料发展有限公司 | High-specific-gravity tungsten alloy sintering setter plate and preparation method thereof |
| CN114011483A (en) * | 2021-11-10 | 2022-02-08 | 中国核动力研究设计院 | Container for zirconium alloy molten pool and cooling water test and preparation method thereof |
| CN116499246A (en) * | 2023-04-17 | 2023-07-28 | 哈尔滨工业大学 | Blending device for overheat and interface reaction of electromagnetic cold crucible smelting melt |
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