CN114107723A - Crucible for drawing glass fiber, Pt-based high-temperature alloy and preparation method thereof - Google Patents
Crucible for drawing glass fiber, Pt-based high-temperature alloy and preparation method thereof Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/08—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
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- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
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Abstract
The invention provides a crucible for drawing glass fiber, a Pt-based high-temperature alloy and a preparation method thereof, wherein the content of Ru in the Pt-based high-temperature alloy is 0.5-20 wt%, and the Pt-based high-temperature alloy also contains Me element, wherein the Me element is at least one element of Cr, Nd, Sm, Sc, Er, Dy and Ta; the content of Me is 0.05 wt% -1.5 wt%. The Pt-based high-temperature alloy disclosed by the invention has the advantages that a compact oxide film is formed on the surface of the alloy to prevent the alloy from being oxidized and burned, an oxide of an additive element is generated in situ in the alloy, the oxide plays a role in dispersion strengthening on the alloy, so that the strength of the Pt-based high-temperature alloy is greatly improved, the oxidation and volatilization resistance is also greatly improved, the Pt-based high-temperature alloy also has excellent high-temperature strength, corrosion resistance and high-temperature electric corrosion resistance, the material price is low, the processing performance is good, and the Pt-based high-temperature alloy is suitable for industrial application of crucible part materials for glass fibers.
Description
Technical Field
The invention relates to the field of high-temperature alloy, in particular to a Pt-based high-temperature alloy crucible material for drawing glass fiber, a preparation method thereof and a prepared crucible.
Background
The platinum-based high-temperature materials have been developed from the original pure platinum to platinum alloys such as Pt-Rh and Pt-Ir, to 20 thSingle-phase ZrO appeared in the 70 s2、Y2O3The oxides of the platinum materials ZGSPtRh and ODSPtRh reinforced by the oxides, the yttrium cerium composite reinforced DPHPt and DPHPtRh reinforced by the oxides, and the latest product Pt-10% RhDPH-A developed recently, are introduced in 2001. Throughout the whole development process, the main idea of the development of the platinum-based high-temperature material is to continuously improve the high-temperature strength and the high-temperature service performance of the material by the strengthening mechanism or the design optimization means of different alloying materials.
A glass fiber bushing material is a bearing body and a channel in a glass fiber drawing furnace in the glass fiber manufacturing process, and is subjected to high temperature of 1430-1650 ℃ in atmospheric atmosphere, 2-5 ten thousand amperes of current and K, S, P, C, Mo, Pb, Si, Zn and SnO2、Cu2O、Al、SO2And Fe and other elements and compounds are corroded, so that the bushing plate material is required to have excellent high-temperature creep strength, high-temperature electric ablation performance and high-temperature oxidation and volatilization resistance, the traditional bushing plate material mainly uses a PtRh alloy material, and because the price of rhodium is continuously higher and the dispersion strengthening process is mature, the zirconium oxide and yttrium oxide dispersion strengthening platinum-rhodium alloy material treated by the internal oxidation process is industrially applied to the manufacturing of a bushing tip and a bushing plate in a glass fiber crucible component. On one hand, the dosage of Rh is reduced, and on the other hand, the high-temperature strength and the corrosion resistance of the material are obviously improved.
Although the physical and mechanical properties of Pt alloy are effectively improved by alloying with Rh and internal oxidation process, Rh forms dense Rh on the surface of material because conventional internal oxidation process has barrier to little solubility and diffusivity of oxygen in solid platinum2O3The film is difficult to enter oxygen atoms into the PtRh alloy in the smelting and annealing processes, so that the direct smelting and internal oxidation annealing are difficult to be used for preparing the oxide reinforced platinum-rhodium alloy material, and the preparation methods of powder metallurgy internal oxidation and powder spraying internal oxidation have the problems of large loss, complex process, multiple internal defects of the alloy material and the like. In addition, the strength of the PtRh alloy with pure platinum or low rhodium content is not particularly ideal after the PtRh alloy is subjected to dispersion strengthening by trace amounts of zirconia and yttria. In recent years, the hole sites of glass fiber bushings have expanded to 6400Although the wire drawing efficiency is improved, wire drawing crucibles such as bushing plates for glass fiber production tend to be large-sized, and higher requirements are put forward for the high-temperature strength of materials, so that the glass fiber production industry has urgent needs for developing new platinum alloy materials with high-temperature strength, high-temperature corrosion performance, good processing performance and high cost performance.
Ru is a platinum group metal element with a high melting point, can form a wide alloy solid solution with Pt at a Pt-rich end and a Ru-rich end, and has the highest solid solution strengthening and microstructure strengthening effects. However, since the Pt-Ru alloy exists such as: the problems of difficult processing, high Ru high-temperature oxidation volatilization rate, large alloy grain boundary fracture tendency and the like when the content of Ru in the alloy is higher, and the application of Pt-Ru alloy as a high-temperature alloy material, in particular to a glass fiber processing base material, has few domestic and foreign patents and literature reports so far.
Studies on "high temperature mechanical properties of platinum-based metals" found that PtRu5(Pt:95 wt.%, Ru: 5%) and PtRu10(Pt:95 wt.%, Ru: 5%) are platinum-ruthenium alloys that are particularly resistant to high temperature creep (platinmetalsrev, 1999,32(1), pp.18-28, b.fischer, a.behreds, d.freund, d.lupton, j.merker).
The study on the influence of ruthenium on the fusion welding resistance of platinum alloy contact materials (Chinese non-ferrous metals bulletin, 1004 and 069(2001) S2-0143-05, pp143-147, Deng Zhongmin, Luxian, Shi' an, Liujian Liang, Ximing) researches Pt-10Ru-Ir alloy, and considers that Ru in the alloy improves the fusion welding resistance of the platinum alloy contact and reduces the arc corrosion of metal splashing caused by arc blowing force.
CN1445185A discloses a side wall and a bushing of a glass fiber crucible made of platinum-iridium or platinum-ruthenium alloy and having a coating of platinum or platinum-rhodium alloy on their outer surface.
JP11[1999] -172,349 (abstract of Derwent database) discloses a ternary alloy of platinum, rhodium and ruthenium for manufacturing crucibles for use in glass wire drawing processes, with a small amount of ruthenium added to improve the high temperature strength of the material.
WO2020/050393JA2020.03.12 discloses a glass fiber producing bushing which has a ceramic coating formed on the surface of the bushing to prevent high temperature oxidation of the bushing.
CN101235446A discloses a novel dispersion-strengthened platinum-based composite material, which is prepared by adding Er2O3 as a dispersion strengthening phase.
The oxidation resistance of the alloy depends on the oxidation property of the constituent elements, trace elements are added into the alloy to be oxidized preferentially to form an oxidation film, the protection effect of preventing the continuous oxidation can be realized on the base alloy, and the oxide is required to have high melting point, no decomposition at working temperature and stable and compact structure. Meanwhile, the volume ratio (PBR) of the metal atoms of the oxide and the oxide molecules thereof is used as a criterion for judging whether the oxide can prevent the substrate from being oxidized continuously, and when the PBR value is less than 1, the oxide layer can not completely cover the surface and can not prevent the substrate from being oxidized continuously. When the PBR value is more than 1 and less than 2, the oxide layer can completely cover the surface of the substrate and can play a role in preventing the substrate from being oxidized continuously. When the PBR value is more than 2, the oxide layer has large stress and tends to fall off automatically under the action of the stress, so that the effect of preventing the substrate from being oxidized continuously cannot be effectively achieved, and the optimal PBR value is 1-1.5. Table 1 shows the calculation parameters of the oxide formation by several alloy additive elements according to the present invention, and the alloy additive elements that can form a dense oxide with a corundum-type structure on the alloy surface are preferred, and the added alloy elements can significantly strengthen the Pt substrate without seriously deteriorating the processing properties of the alloy material.
TABLE 1
Compared with PtIr and PtRh alloy, Pt-Ru alloy has higher high-temperature strength and quite excellent high-temperature corrosion resistance, but the defect of high Ru high-temperature oxidation volatilization rate is an important restriction factor for limiting the application of the Pt-Ru alloy to glass fiber crucible part materials, the long-term work of the glass fiber crucible materials is at a high temperature of more than 1200 ℃, and the known published documents show that the hot point of research on preparing the glass fiber crucible materials is a method capable of passing through powder metallurgy, and a dispersion strengthening phase is added to strengthen the alloy, but the research does not relate to the strengthening of the alloyAnd preventing or reducing high temperature oxidation of the alloy material. Meanwhile, from the known published literature, the preparation of surface ceramic coatings is also a feasible method for improving the high-temperature oxidation resistance of alloy materials. However, the two methods cannot simultaneously improve the alloy strength and the alloy high-temperature oxidation resistance, and the two methods have complex preparation processes and high process cost. Table 2 shows Cr, Nd, Sm, Sc, Er, Dy, Ta at 1600 ℃ and RuO2Gibbs free energy of redox reaction.
TABLE 2
Disclosure of Invention
Aiming at the problems in the prior art, the invention achieves the following aims by adding trace elements based on the design of alloy components: (1) cr, Nd, Sm, Sc, Er, Dy and Ta are added into the PtRu alloy, so that trace additive elements in the alloy are preferentially oxidized at high temperature to form a compact oxide protective layer, and oxygen and a substrate material are isolated, so that the effect of preventing the substrate from being continuously oxidized is achieved. Meanwhile, the trace additive elements also play a role in strengthening the alloy. (2) In the PtRu smelting process, a small amount of Ru is inevitably oxidized into RuO2And RuO2Has a certain solid solubility in Ru, so that a small amount of RuO exists in the alloy2After addition of trace elements Me, RuO at high temperature2The following oxidation-reduction reaction is carried out on the metal oxide and Cr, Nd, Sm, Sc, Er, Dy and Ta: (Me: Cr, Nd, Sm, Sc, Er, Dy, Ta) RuO2+Me＝Ru+Me2O3；RuO2The oxygen (O) released by reduction reacts with Cr, Nd, Sm, Sc, Er, Dy and Ta in situ to generate Me2O3Disperse phase to achieve the purpose of dispersion strengthening the PtRu alloy. The specific technical scheme is as follows:
the invention firstly provides a Pt-based high-temperature alloy which is used as a crucible material for drawing glass fiber and is characterized in that: the content of Ru in the alloy is 0.5-20 wt%, the alloy contains Me, and the Me is at least one element of Cr, Nd, Sm, Sc, Er, Dy and Ta; the content of Me is 0.05 wt% -1.5 wt%.
Preferably, Me is at least two elements of Cr, Nd, Sm, Sc, Er, Dy and Ta.
Preferably, the alloy surface has at least one oxide film of Cr, Nd, Sm, Sc, Er, Dy and Ta; the molecular structural formula Me generated by at least one of Cr, Nd, Sm, Sc, Er, Dy and Ta is dispersed and distributed in the alloy2O3An oxide of (a).
Preferably, the content of Ru in the alloy is 5-6 wt%, Me is at least two of Cr, Nd, Sm, Sc, Er, Dy and Ta, the content of each element is 0.25-1 wt%, and the balance is Pt.
More preferably, Ru5 wt% in the alloy, Me is at least two of Cr, Nd, Sm, Sc, Er, Dy and Ta, the content of each element is 0.25-0.5 wt%, and the balance is Pt.
The invention also provides a preparation method of the Pt-based high-temperature alloy, which mainly comprises the following steps: mixing all elements in the alloy, compacting the mixed powder, annealing by hydrogen and sintering in vacuum, and carrying out arc or induction melting under the protection of argon to obtain an alloy ingot; forging and cogging the cast ingot at 1650-1800 ℃, hot rolling at 1500-1700 ℃, and rolling the alloy into a sheet at 1300-1400 ℃ by using a flat roll.
The Pt-based high-temperature alloy adopts the smelting methods of induction smelting, electron beam smelting, electric arc smelting and the like, the Pt-based high-temperature alloy contains Ru, and Ru powder carries attached O during smelting because of the oxophilicity of the Ru2And RuO2Cr, Nd, Sm, Sc, Er, Dy, Ta all have lower oxygen affinity potentials than Ru, O2And RuO2Decomposed O2-Directly combines with Cr, Nd, Sm, Sc, Er, Dy and Ta to form dispersed oxide in the alloy. The internal oxidation during smelting is simple and is easier to be uniform. Oxides in materialsNot only has the strengthening function, but also enhances the high-temperature oxidation resistance of the material due to the formation of a compact oxide film on the surface.
The invention also provides a crucible for drawing glass fiber, the crucible component comprises a bushing plate, a side wall, an external power supply wire and a spinneret arranged outside the bushing plate, and the crucible is characterized in that: the parts are all made of the Pt-based high-temperature alloy.
Compared with the glass fiber bushing alloy material in the prior art, the alloy of the invention has the following advantages:
1. pt-based superalloy of the present invention and conventional PtRh alloy, ZrO2Dispersion strengthened Pt, PtRh alloy, rare-earth oxide Y2O3、CeO2Compared with dispersion-strengthened Pt and PtRh alloys, the dispersion-strengthened Pt and PtRh alloy has better high-temperature strength and corrosion resistance;
2. the Pt-based high-temperature alloy material is arranged on the surface and in the alloy, and the high-temperature oxidation-resistant volatility of the alloy is greatly improved compared with that of the common PtRu alloy due to the protection of compact oxides, so that the use requirement of the glass fiber bushing can be met.
3. The Pt-based high-temperature alloy has better cost performance than the PtRh alloy, at least one metal of Cr, Nd, Sm, Sc, Er, Dy and Ta is added into the PtRu alloy, the elements improve the mechanical property and the corrosion resistance of the material, the material shows good high-temperature strength, corrosion resistance, electric corrosion resistance and high-temperature oxidation resistance, and the material also has better processing property, and meanwhile, the preparation process is simple and the process cost is low. On the other hand, Ru is added to replace the precious metal Rh, because the unit price of the raw material of the metal Ru is less than one thirtieth of that of the raw material of the metal Rh, and is only one seventtieth of that of the raw material of the metal Ir, the material cost is effectively reduced.
Drawings
FIG. 1 is a metallographic structure diagram of a Pt-based superalloy material according to example 21.
Detailed Description
The present invention is further illustrated by the following examples to facilitate a better understanding of the invention, but the scope of the invention is not limited to these examples.
Wherein, the purity of Pt and Ru in the following examples is more than or equal to 99.99 wt.%, and the purity of Cr, Nd, Sm, Sc, Er, Dy and Ta is more than or equal to 99.9 wt.%.
Comparative example 1
The Pt-based superalloy material of the present embodiment is an alloy consisting of Pt and Ru, where Ru:5 wt.%, the remainder being Pt.
The method for manufacturing the alloy material comprises the following steps:
(1) pt powder and Ru powder with the purity of more than or equal to 99.99 wt.% are mixed according to a formula of PtRu5, the mixed powder is compacted, hydrogen annealing and vacuum sintering are carried out, and electric arc or induction melting is carried out under the protection of argon gas, so that a PtRu alloy ingot with the diameter of phi 28mm is obtained; the ingot was forged to bloom at 1700 ℃ (40% deformation rate was maintained in the machine direction, i.e. length direction, during cogging until an ingot with uniform structure and finer grains was formed), then hot rolled at 1600 ℃, then the PtRu alloy was rolled to a sheet 2.0 mm thick using a flat roll at 1350 ℃, and then continuously rolled to a sheet 1.0 mm thick at room temperature.
Comparative example 2
The Pt-based superalloy material of the present embodiment is an alloy consisting of Pt and Ru, where Ru: 6 wt.%, the remainder being Pt.
The method for manufacturing the alloy material comprises the following steps:
(1) pt powder and Ru powder with the purity of more than or equal to 99.99 wt.% are mixed according to a formula of PtRu6, the mixed powder is compacted, hydrogen annealing and vacuum sintering are carried out, and electric arc or induction melting is carried out under the protection of argon gas, so that a PtRu alloy ingot with the diameter of phi 28mm is obtained; the ingot was forged to bloom at 1700 ℃ (40% deformation rate was maintained in the machine direction, i.e. length direction, during cogging until an ingot with uniform structure and finer grains was formed), then hot rolled at 1600 ℃, then the PtRu alloy was rolled to a sheet 2.0 mm thick using a flat roll at 1350 ℃, and then continuously rolled to a sheet 1.0 mm thick at room temperature.
Example 1
The Pt-based superalloy material of the present embodiment is an alloy consisting of Pt, Ru, and Cr, where Ru:5 wt%, Cr: 1 wt.%, the remainder being Pt.
The method for manufacturing the alloy material comprises the following steps:
(1) pt powder and Ru powder with the purity of more than or equal to 99.99 wt.% are mixed according to a formula of PtRu5Cr1, the mixed powder is compacted, hydrogen annealing and vacuum sintering are carried out, and PtRuCr alloy cast ingot with the diameter of phi 28mm is obtained by arc or induction melting under the protection of argon; the ingot was forged to cogging at 1700 ℃ (40% deformation rate was maintained in the working direction, i.e. the length direction, during cogging until an ingot with a uniform structure and fine grains was formed), hot rolled at 1600 ℃, then the PtRuCr alloy was rolled to a sheet 2.0 mm thick using a flat roll at 1350 ℃, and then continuously rolled to a sheet 1.0 mm thick at room temperature.
Example 2
The Pt-based superalloy material of the present embodiment is an alloy consisting of Pt, Ru, and Sm, where Ru: 20 wt%, Sm: 0.05 wt.%, the remainder being Pt.
The method for manufacturing the alloy material comprises the following steps:
(1) pt powder and Ru powder with the purity of more than or equal to 99.99 wt.% are mixed according to a PtRu20Sm0.05 formula, the mixed powder is compacted, hydrogen annealing and vacuum sintering are carried out, and electric arc or induction melting is carried out under the protection of argon to obtain a PtRuSm alloy ingot with the diameter of phi 28 mm; the ingot was forged to cogging at 1800 ℃ (the cogging was maintained at 50% strain rate along the machine direction, i.e. the length direction, until an ingot with a uniform structure and finer grains was formed), hot rolled at 1500 ℃, then the PtRuSm alloy was rolled to 2.0 mm thick sheet using a flat roll at 1400 ℃, and then continuously rolled to 1.0 mm thick sheet at room temperature.
Example 3
The Pt-based superalloy material of the present embodiment is an alloy consisting of Pt, Ru, and Er, where Ru: 0.5 wt%, Er: 1.5 wt.%, the remainder being Pt.
The method for manufacturing the alloy material comprises the following steps:
(1) pt powder and Ru powder with the purity of more than or equal to 99.99 wt.% are mixed according to a PtRu0.5Er1.5 formula, the mixed powder is compacted, hydrogen annealing and vacuum sintering are carried out, and the PtRuEr alloy ingot with the diameter of phi 28mm is obtained by electric arc or induction melting under the protection of argon; the ingot was forged to cogging at 1650 ℃ (the cogging was carried out while maintaining a 50% deformation rate in the machine direction, i.e. the length direction, until an ingot with a uniform structure and fine grains was formed), then hot rolling was carried out at 1700 ℃, then the PtRuEr alloy was rolled to a sheet of 2.0 mm thickness using a flat roll at 1300 ℃, and then rolling was continued to a sheet of 1.0 mm thickness at room temperature.
Examples 4-21 the same procedure and conditions as in example 1 were followed, except that the constituent elements and the contents were different. The constituent elements and contents of examples 4 to 21 are shown in Table 3:
TABLE 3 compositional elements and amounts of examples 4-21
| Pt | Ru | Cr | Nd | Sm | Sc | Er | Dy | Ta | |
| Example 4 | Balance of | 5wt％ | 1wt％ | ||||||
| Example 5 | Balance of | 5wt％ | 1wt％ | ||||||
| Example 6 | Balance of | 5wt％ | 1wt％ | ||||||
| Example 7 | Balance of | 5wt％ | 1wt％ | ||||||
| Example 8 | Balance of | 5wt％ | 1wt％ | ||||||
| Example 9 | Balance of | 5wt％ | 1wt％ | ||||||
| Example 10 | Balance of | 5wt％ | 0.5wt％ | 0.5wt％ | |||||
| Example 11 | Balance of | 5wt％ | 0.5wt％ | 0.5wt％ | |||||
| Example 12 | Balance of | 5wt％ | 0.5wt％ | 0.5wt％ | |||||
| Example 13 | Balance of | 5wt％ | 0.5wt％ | 0.5wt％ | |||||
| Example 14 | Balance of | 5wt％ | 0.5wt％ | 0.5wt％ | |||||
| Example 15 | Balance of | 5wt％ | 0.5wt％ | 0.5wt％ | |||||
| Example 16 | Balance of | 5wt％ | 0.5wt％ | 0.5wt％ | |||||
| Example 17 | Balance of | 5wt％ | 0.5wt％ | 0.5wt％ | |||||
| Example 18 | Balance of | 5wt％ | 0.5wt％ | 0.5wt％ | |||||
| Example 19 | Balance of | 5wt％ | 0.5wt％ | 0.5wt％ | |||||
| Example 20 | Balance of | 5wt％ | 0.5wt％ | 0.5wt％ | |||||
| Example 21 | Balance of | 5wt％ | 0.25wt％ | 0.25wt％ | 0.25wt％ | 0.25wt％ |
The physical properties of the obtained Pt-based superalloy under the process conditions of this example are shown in tables 4-5.
Table 4 examples physical properties
TABLE 5 thermal stability of the alloys of the examples and comparative examples (current 2500A, current density 84A/mm)2)
It can be seen that the examples of the present invention have excellent properties, good high temperature strength, corrosion and galvanic corrosion resistance, and good high temperature oxidation resistance.
The invention also provides a crucible for drawing glass fiber, the crucible component comprises a bushing plate, a side wall, an external power supply wire and a spinneret arranged outside the bushing plate, and the crucible component is made of the Pt-based high-temperature alloy in any embodiment.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (7)
1. A Pt-based superalloy for use as a crucible material for drawing glass fibers, comprising: the content of Ru in the alloy is 0.5-20 wt%, the alloy also contains Me element, and the Me element is at least one element of Cr, Nd, Sm, Sc, Er, Dy and Ta; the content of Me is 0.05 wt% -1.5 wt%.
2. A Pt-based superalloy according to claim 1, wherein: the Me elements are at least two of Cr, Nd, Sm, Sc, Er, Dy and Ta.
3. The Pt-based superalloy as in claim 1, wherein: the surface of the alloy is provided with at least one oxide film of Cr, Nd, Sm, Sc, Er, Dy and Ta; the molecular structural formula Me generated by at least one of Cr, Nd, Sm, Sc, Er, Dy and Ta is dispersed and distributed in the alloy2O3An oxide of (a).
4. A Pt-based superalloy according to claim 1, wherein: the content of Ru in the alloy is 5-6 wt%, the Me elements are at least two of Cr, Nd, Sm, Sc, Er, Dy and Ta, the content of each element is 0.25-1 wt%, and the balance is Pt.
5. A Pt-based superalloy according to claim 1, wherein: the content of Ru in the alloy is 5 wt%, the Me elements are at least two of Cr, Nd, Sm, Sc, Er, Dy and Ta, the content of each element is 0.25-0.5 wt%, and the balance is Pt.
6. A method for preparing the Pt-based superalloy of any of claims 1 to 5, comprising the steps of: mixing all elements in the alloy, compacting the mixed powder, annealing by hydrogen and sintering in vacuum, and carrying out arc or induction melting under the protection of argon to obtain an alloy ingot; forging and cogging the cast ingot at 1650-1800 ℃, hot rolling at 1500-1700 ℃, and rolling the alloy into a sheet at 1300-1400 ℃ by using a flat roll.
7. The utility model provides a crucible for drawing glass fiber, crucible part includes bushing, lateral wall, external power source wiring, the spinneret in the bushing outside, its characterized in that: the parts are made of the Pt-based superalloy according to any of claims 1-5 or the Pt-based superalloy prepared by the method according to claim 6.
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| CN115896528B (en) * | 2022-11-01 | 2024-03-12 | 贵研铂业股份有限公司 | Refractory intermetallic compound reinforced platinum-rhodium-based superalloy, and preparation method and application thereof |
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