Ni-based self-fluxing alloy, glass manufacturing components using Ni-based self-fluxing alloy, molds and glass gob transport components using glass manufacturing components

Abstract

To provide a Ni-based self-fluxing alloy, a component for glass manufacturing, a mold, and a component for transporting glass gob, having improved slidability to a glass gob.SOLUTION: A Ni-based self-fluxing alloy for use in a component for transporting or forming glass having a viscosity of log η=3 to 14.6 (=103 to 1014.6 poise) in glass manufacturing contains 0 mass% or more and 0.5 mass% or less of B, 0 mass% or more and less than 5 mass% of hard particles, and Si. The content of B is preferably 0 mass% or more and less than 0.03 mass%. The content of Si is preferably 1 mass% or more and less than 7.5 mass%, more preferably more than 1.5 mass% and less than 7.5 mass%, or 5 mass% or more and less than 7.5 mass%.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a Ni (nickel)-based self-fluxing alloy used in glass manufacturing components for transporting or shaping glass, a glass manufacturing component using the Ni-based self-fluxing alloy, and a mold and glass gob transport component using the glass manufacturing component. [Background technology]

[0002] In the molding process of glass products, if glass manufacturing components and glass in a high temperature state tend to adhere to each other, molding defects such as inability to accurately mold the product shape or scratches on the surface of the glass product will occur. For this reason, for example, in molding glass bottles, a mold release agent is frequently applied to ensure mold releasability (called swabbing) (for example, Patent Document 1). Note that, hereafter, glass in a high temperature state that can be molded, i.e., glass with a viscosity of logη=3 to 14.6 (=10 3 ~10 14.6 Glass and its chunks in a state of (poise) are defined as "molten glass" or "molten glass chunks." Here, logη is the common logarithm.

[0003] Furthermore, alloys containing trace amounts of B (boron) have been proposed as glass manufacturing members having excellent heat resistance and wear resistance (for example, Patent Document 2).

[0004] In fields other than glass forming, it is well known to form coatings on the surfaces of components such as plungers and hearth rolls by thermal spraying to improve their wear resistance. Self-fluxing alloys have been proposed as alloys used to form coatings. These alloys do not peel off when subjected to sudden thermal changes, and can be applied to the surface of a component by thermal spraying, followed by a fusing process (remelting process) to form a uniform, pore-free coating. Proposed self-fluxing alloys include, by mass, 40-70% Ni, 5-40% Cr (chromium), 1-6% B, 1-6% Si (silicon), 0.1-2.0% C (carbon), 1-10% Fe (iron), 1-20% W (tungsten), and 0.8-5% Cu (copper) (see, for example, Patent Document 3). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 01 / 28942 [Patent Document 2] Special Publication No. 33-4952 [Patent Document 3] Special Publication No. 61-49376 Summary of the Invention [Problem to be solved by the invention]

[0006] The properties required for glass manufacturing components that come into contact with molten glass blocks during the glass product molding process include being resistant to adhesion to the molten glass blocks, being free of holes (pinholes, etc.) on the surface of the component unless intentionally provided, and having good wear resistance and a long life.Conventional glass manufacturing components have not yet fully satisfied these properties.

[0007] In view of the above background, an object of the present invention is to provide a Ni-based self-fluxing alloy for use in glass manufacturing components, which has high abrasion resistance and low adhesion to molten glass, a glass manufacturing component using the Ni-based self-fluxing alloy, and a mold and glass gob transport component using the glass manufacturing component. [Means for solving the problem]

[0008] One aspect of the present invention provides a Ni-based self-fluxing alloy for use in a glass manufacturing component for transporting or shaping glass having a viscosity of logη = 3 to 14.6, the alloy comprising 0% by mass or more and 0.5% by mass or less of B, 0% by mass or more and less than 5% by mass of hard particles, and Si. Another aspect of the present invention provides a glass manufacturing component in which a portion that comes into contact with molten glass during glass shaping is formed using the Ni-based self-fluxing alloy. Another aspect of the present invention provides a glass bottle molding die or glass gob transport component formed from the glass manufacturing component. [Effects of the Invention]

[0009] The surface of the Ni-based self-fluxing alloy of the present invention is resistant to adhesion to molten glass even in high-temperature regions. Therefore, when the alloy is applied to all or part of a glass-producing member, friction upon contact with molten glass is reduced, resulting in a reduction in swabbing frequency and an improvement in product yield due to the suppression of product defects. [Brief explanation of the drawings]

[0010] [Figure 1] Schematic diagram of what happens when a molten glass block collides with a metal material or glass manufacturing component [Figure 2] Perspective view of molten glass adhesion evaluation test device [Figure 3] An explanatory diagram showing a mold and a glass transport member [Figure 4] Graph showing adhesion rate of molten glass blocks versus sample surface temperature for Examples 1 to 5 and Comparative Examples 1 to 4. DETAILED DESCRIPTION OF THE INVENTION

[0011] The greatest feature of the present invention is the discovery that a Ni-based self-fluxing alloy is less likely to adhere to molten glass even in high temperature regions by incorporating B in an amount of 0 mass % or more and 0.5 mass % or less. According to the present invention, the slipperiness of molten glass blocks on the surface of the Ni-based self-fluxing alloy can be improved.

[0012] The mechanism by which this phenomenon occurs is presumed to be as follows: The Ni-based self-fluxing alloy of the present invention forms an oxide film on the surface of the base material. When a cross-section of the surface of the Ni-based self-fluxing alloy was observed with an electron microscope, it was confirmed that a gap was formed between the base material and the oxide film. From this, the following can be considered: As schematically shown in FIG. 1 , it is believed that the metal oxide film 15 formed on the surface of a metal material 14 made of the Ni-based self-fluxing alloy of the present invention is easily peeled off from the base material (metal material 14) together with the molten glass mass 16. Furthermore, although the exact reason is not clear, it is presumed that the oxide film of the Ni-based self-fluxing alloy of the present invention is even more easily peeled off by containing metals from Groups 4, 5, and 6 of the periodic table. Oxide films of metals from Groups 4, 5, and 6 of the periodic table have different thermal expansion coefficients than the Ni-based self-fluxing alloy, and therefore are thought to peel off more easily than the Ni-based self-fluxing alloy when the temperature rises. 1(B) and 1(C), when metal oxide film 15 of Groups 4, 5, and 6 of the periodic table comes into contact with high-temperature molten glass lump 16, it is adsorbed to molten glass lump 16 and peels off from metal material 14 (base material) made of Ni-based self-fluxing alloy. This is thought to improve the slipperiness of the Ni-based self-fluxing alloy relative to the glass lump. Furthermore, after the oxide film peels off, it quickly regenerates, i.e., the state shown in FIG. 1(C) quickly returns to the state shown in FIG. 1(A), and it is thought that the Ni-based self-fluxing alloy will exhibit high slipperiness relative to the molten glass lump over the long term.

[0013] In addition, Ni is generally known to have poorer adhesion to glass than other metallic materials. On the other hand, Ni alloys containing B may exhibit increased adhesion to molten glass blocks, i.e., the slipperiness of the molten glass blocks on the surface of the metallic material may be impaired. The exact reason for this phenomenon is unclear, but it is thought that the B in the Ni alloy or the B2O3 formed on the Ni alloy surface in a high-temperature environment may improve the adhesion of the Ni alloy oxide to the base metal, or that the mixed oxide of B and Ni alloy is less likely to peel from the base metal, thereby suppressing the peeling of the oxide film described above. As a result, the mixed oxide adheres strongly to the Ni alloy surface, resulting in poor slipperiness.

[0014] According to this embodiment, the viscosity is logη=3 to 14.6 (=10 3 ~10 14.6 The Ni-based self-fluxing alloy used in glass manufacturing members for forming glass of 400°C or higher (poise) contains 0% by mass or more and 0.5% by mass or less of B, 0% by mass or more and less than 5% by mass of hard particles, and Si. The glass manufacturing member includes a glass forming member and a glass transport member. Here, logη is a common logarithm. The blending amounts of components contained in the Ni-based self-fluxing alloy according to this embodiment are preferably in the following ranges. The glass may be, for example, soda-lime glass, borosilicate glass, lead glass, etc. Furthermore, the glass manufacturing member can be said to be a member for transporting or forming glass at 400°C or higher and 1400°C or lower.

[0015] In the Ni-based self-fluxing alloy according to this embodiment, B (boron) is 0% by mass or more and 0.5% by mass or less. B is preferably 0% by mass or more and less than 0.03% by mass. In other embodiments, the Ni-based self-fluxing alloy does not need to contain B. Furthermore, in the Ni-based self-fluxing alloy according to this embodiment, the hard particles are more than 0% by mass and less than 5% by mass.

[0016] The Ni-based self-fluxing alloy according to this embodiment contains 1.0 mass% or more and less than 7.5 mass% Si (silicon). The Ni-based self-fluxing alloy preferably contains more than 1.5 mass% and less than 7.5 mass% Si. The Ni-based self-fluxing alloy preferably contains 5 mass% or more and less than 7.5 mass% Si. The Ni-based self-fluxing alloy may also contain 5 mass% or more and less than 7.5 mass% Si.

[0017] B and Si are flux components, and the higher the content, the better the self-fluxing property of the Ni-based self-fluxing alloy. B and Si form B2O3 and SiO2 oxide films on the surface of the Ni-based self-fluxing alloy. As mentioned above, B2O3 can be a factor in improving adhesion to molten glass, so a low B content is preferable in the Ni-based self-fluxing alloy according to this embodiment.

[0018] In the Ni-based self-fluxing alloy according to this embodiment, hard particles are added to improve wear resistance. Examples of hard particles include carbides, nitrides, oxides, and composites of these with metal materials, known as cermet materials. The Ni-based self-fluxing alloy according to this embodiment includes at least one of carbides, nitrides, oxides, and cermets as hard particles. The hard particle content is preferably greater than 0% by mass and less than 5% by mass. Increasing the hard particle content improves wear resistance, but too much makes cutting and other processes difficult when manufacturing components. Furthermore, increasing the hard particle content makes the Ni-based self-fluxing alloy more likely to adhere to molten glass blocks. Therefore, if prioritizing reducing the adhesion of the Ni-based self-fluxing alloy to molten glass blocks, the lower the hard particle content, the better, and it may even be 0.

[0019] The carbide as a hard particle includes any one carbide of elements of Groups 4, 5, and 6 of the periodic table, such as TiC (titanium carbide), ZrC (zirconium carbide), HfC (hafnium carbide), VC or V2C (vanadium carbide), NbC (niobium carbide), TaC (tantalum carbide), Cr3C2, Cr7C3, or Cr 23 Includes C6 (chromium carbide), Mo2C (molybdenum carbide), WC or W2C (tungsten carbide), etc.

[0020] The carbide serving as hard particles may be silicon carbide.

[0021] The oxide as the hard particles may include an oxide of at least one metal selected from the lanthanoids, and the oxide of at least one metal selected from the lanthanoids may be cerium oxide.

[0022] The cermet preferably contains a carbide of any one of elements in Groups 4, 5, and 6 of the periodic table. The cermet particles, which are a composite of the carbide and a metal material, are preferably WC containing 12 mass% Co (cobalt) as a binder (WC-12%Co), but are not limited thereto.

[0023] The hard particles described above are dispersed in the Ni-based self-fluxing alloy matrix, improving the wear resistance of the alloy and providing long-term durability when used as a glass manufacturing component.

[0024] The Ni-based self-fluxing alloy preferably contains at least one element selected from Group 15 elements of the periodic table. The at least one element selected from Group 15 elements of the periodic table may be contained in an amount of 0% by mass to 15% by mass. The at least one element selected from Group 15 elements of the periodic table may include P.

[0025] The Ni-based self-fluxing alloy according to this embodiment preferably contains P (phosphorus). The P content is 0% by mass or more and 5% by mass or less, more preferably 0.5% by mass or more and 4% by mass or less.

[0026] The Ni-based self-fluxing alloy according to this embodiment preferably contains at least one metal selected from the elements of Groups 4, 5, and 6 of the periodic table. The metal content is 0% by mass to 30% by mass, and preferably 2.5% by mass to 30% by mass. The metal is preferably chromium (Cr), and the Cr content is preferably 2.5% by mass to 30% by mass.

[0027] The Ni-based self-fluxing alloy according to this embodiment contains 3.5 mass % to 97.5 mass % of Ni as a residue of the above components, and may contain trace amounts of impurities that are unavoidable in the manufacturing process.

[0028] The metal components, excluding the hard particles, in the Ni-based self-fluxing alloy according to this embodiment may be prepared in any manner as long as they have a predetermined composition. The Ni-based self-fluxing alloy may be prepared, for example, by melting and mixing metals and inorganic compounds containing the constituent elements and then solidifying them to form an alloy, or by simply mixing fine particles of metals and inorganic compounds containing the constituent elements together.

[0029] Methods for producing glass manufacturing members using the Ni-based self-fluxing alloy of the present invention include, but are not limited to, sintering or casting.

[0030] As a method of applying the alloy only to the portion that comes into contact with the molten glass, a coating made of a Ni-based self-fluxing alloy may be formed by coating the contact surfaces of a mold and a molten glass gob transport member made of a metal such as iron with a coating made of a Ni-based self-fluxing alloy by thermal spraying, plating, cladding, additive manufacturing, welding, etc. Furthermore, by performing a fusing process (remelting process) after forming the coating, it is possible to close pores that have occurred in the coating and improve the adhesion between the base material and the coating.

[0031] 3 shows an example of a glass manufacturing component. As shown in FIG. 3, the glass manufacturing component includes a glass bottle forming mold 42 for forming glass bottles from molten glass and a glass gob conveying member 44 for conveying molten glass gobs (gobs) supplied from a molten glass tank 43 to the mold 42. The mold 42 includes a blank mold, baffle, mouth mold, plunger, and finishing mold for forming a parison from the molten glass gob, and a finishing mold for forming a glass bottle from the parison. The glass gob conveying member 44 includes a chute and a trough for conveying the gob to the blank mold. The glass gob conveying member 44 includes a scoop 44A, a trough 44B, and a deflector 44C. The mold 42 and the glass gob conveying member 44 may be entirely formed of a Ni-based self-fluxing alloy, or only the surface that comes into contact with the glass gob may be formed as a coating of the Ni-based self-fluxing alloy.

[0032] In the above embodiment, when 0.3 g of molten glass heated to 1000°C is dropped onto the plate-shaped Ni-based self-fluxing alloy heated to 620°C and inclined at 70 degrees relative to the horizontal plane, the molten glass has the property of sliding down without adhering to the Ni-based self-fluxing alloy.

[0033] According to these embodiments, it is possible to provide a Ni-based self-fluxing alloy that does not adhere to molten glass gobs even in high-temperature regions, and further, by applying this alloy to various glass-forming members, it is possible to provide various glass-manufacturing members that do not adhere to molten glass gobs or plate glass and have good slip properties. Glass-manufacturing members include, for example, press-forming dies, forming rolls, transport rolls, and jigs that come into contact with transport molds and glass. [Example]

[0034] (Molten glass adhesiveness evaluation test equipment) A test apparatus 21 for evaluating the adhesion between molten glass and metal will now be described. As shown in Fig. 2, the test apparatus 21 has a glass rod holder 23 for supporting a glass rod 22, a glass rod heating device 24 for heating the lower end of the glass rod 22, a sample holder 26 for supporting a sample 20 at a predetermined angle below the glass rod heating device 24, and a sample heating device 27 for heating the sample 20.

[0035] The sample 20 is inclined at 70 degrees relative to the horizontal plane, and its center is placed 100 mm below the center point A of the frame 28. The sample heating device 27 is a metal plate equipped with a heater 30 connected to a temperature controller 32 and a thermocouple 31.

[0036] The glass rod heating device 24 has a rectangular frame 28 and four burners 29 supported by the frame 28. Each burner 29 is supported by the frame 28 so that its injection hole faces inward of the frame 28 and its injection axis intersects at the center point A of the frame 28. The burners 29 are adjusted so that the tips of the flames injected from them intersect at the center point A of the frame 28.

[0037] (glass rod) The composition of the glass rod 22 was 69 mass% SiO, 1.7 mass% AlO, 0.06 mass% FeO, 8.5 mass% NaO, 4.9 mass% KO, 2.2 mass% MgO, 4.0 mass% CaO, 6.0 mass% SrO, 3.2 mass% BaO, 0.3 mass% SbO, 0.2 mass% PO, 0.03 mass% TiO, 0.03 mass% Cl, 0.03 mass% SO, and 0.1 mass% ZrO. The diameter of the glass rod was 4 mm.

[0038] (Experimental Method) After confirming that the surface temperature of sample 20 was at the specified temperature by measuring it with a temperature sensor (A-type series stationary surface temperature sensor manufactured by Anritsu Meter Co., Ltd.), the lower end of glass rod 22 was placed at center point A of frame 28 and heated by flames sprayed from each burner 29. The lower end of the heated glass rod became spherical and naturally fell, colliding with sample 20. The temperature of the glass lump at the moment of collision was measured with a thermograph (Plexlogger PL3 manufactured by Shinano Kenshi).

[0039] (Adhesion rate measurement method) The glass chunk that collided with sample 20 either adhered (adhered) to sample 20 or fell downward without adhering. When the temperature of the glass chunk at the moment of collision with sample 20 was within the range of 1000 (±20) °C, the one that adhered and remained on the surface of sample 20 was judged as "adhered," and the one that fell downward without adhering to the surface of sample 20 was judged as "not adhered." This test was performed 10 times at a certain surface temperature of sample 20, and the percentage of "adhered" results out of the 10 was taken as the adhesion rate (%). Note that molten glass temperatures outside the above range were not included in the evaluation.

[0040] Samples according to Examples 1 to 5 and Comparative Examples 1 to 4 were prepared and evaluated by the methods described below. Table 1 shows the mixing ratios, preparation methods, and evaluation results for Examples 1 to 5 and Comparative Examples 1 to 4.

[0041] [Table 1]

[0042] Example 1 The alloy raw materials were Ni as the residual component, Si with a particle size of 105 μm or less, Ni2P with a particle size of 150 μm or less, Cr with a particle size of 63 μm or less, Ni with a particle size of 2-3 μm, and Mo powder with a particle size of approximately 1.5 μm or less (all from Kojundo Chemical Laboratory Co., Ltd.) mixed in the proportions shown in Table 1, and a metal plate was produced by pulse current sintering, after which additional processing was performed to produce a plate with a width of 3 cm, a depth of 4 cm, a thickness of 3 mm, and a surface roughness (arithmetic mean roughness Ra) of approximately 1 μm or less. This plate was used as Sample 20 and a molten glass adhesion evaluation test was performed.

[0043] Example 2 As the alloy raw material, W (tungsten) (Kojundo Chemical Laboratory Co., Ltd.) having an average particle size of 10 μm or less was mixed, and samples were prepared and evaluation tests were carried out in the same manner as in Example 1, except that the mixing ratio was set to that of Example 2 in Table 1.

[0044] Example 3 In addition to the composition of Example 1, WC-12%Co (Utec Japan Co., Ltd.) with a particle size of 15-45 μm was added as hard particles as alloy raw materials in the proportions shown in Example 3 of Table 1. A metal plate was produced by casting, and then additional processing was carried out to produce a plate with a width of 3 cm, a depth of 4 cm, a thickness of 3 mm, and a surface roughness (arithmetic mean roughness Ra) of approximately 1 μm or less. This plate was used as Sample 20 to conduct a molten glass adhesion evaluation test.

[0045] Example 4 Samples were prepared and evaluation tests were carried out in the same manner as in Example 3, except that the alloy raw materials were mixed in the proportions shown in Example 4 in Table 1.

[0046] Example 5 Samples were prepared and evaluation tests were carried out in the same manner as in Example 4, except that 0.03 mass % of B (Kojundo Chemical Laboratory Co., Ltd.) having a particle size of 45 μm or less was further mixed as an alloy raw material.

[0047] (Comparative Example 1) Samples were prepared and evaluation tests were carried out in the same manner as in Example 3, except that the alloy raw materials were mixed in the proportions shown in Comparative Example 1 in Table 1.

[0048] (Comparative Example 2) Samples were prepared and evaluation tests were carried out in the same manner as in Example 1, except that the alloy raw materials were mixed in the proportions shown in Comparative Example 2 in Table 1.

[0049] (Comparative Examples 3 and 4) Samples were prepared and evaluation tests were carried out in the same manner as in Example 1, except that the alloy raw materials were mixed in the proportions shown in Comparative Examples 3 and 4 in Table 1.

[0050] (Influence of B and Si) FIG. 4 shows the results of an adhesion evaluation test for Examples 1 to 5 and Comparative Examples 1 to 4 to molten glass blocks. At each sample surface temperature, the lower the adhesion rate, the higher the slipperiness to the molten glass block. The evaluation criteria were as follows: when the sample surface temperature was 480°C, 560°C, or 620°C, an adhesion rate of less than 10% was marked with a circle (○), and when it was 10% or more, a cross (×). As can be seen from FIG. 4, the adhesion rate decreased as the B content decreased. Examples 1 and 2, which had a B content of 0% to 0.5% by mass and a WC-12%Co content of more than 0% to less than 5% by mass as hard particles, met the evaluation criteria at all temperatures of 480°C, 560°C, and 620°C. Comparative Examples 1 and 2, which had a B content of 0% by mass but a WC-12%Co content of 5% by mass or more, met the evaluation criteria at 480°C and 560°C, but did not meet the evaluation criteria at 620°C. Furthermore, the results of Comparative Examples 2 to 4 show that the adhesion rate increases as the content of B increases. Also, Example 2 contains 15.7 mass% W (tungsten), the same amount as WC-12%Co in Comparative Examples 2 to 4, but meets the criteria at all temperatures of 480°C, 560°C, and 620°C. This shows that W does not increase the adhesion rate as much as WC-12%Co.

[0051] The Ni-based self-fluxing alloy according to the above embodiment can improve the slipperiness of the molten glass gob. Furthermore, the alloy contains at least one flux component of B and Si, which enables fusing processing.

[0052] The Ni-based self-fluxing alloy of the present invention has a property that when 0.3 g of molten glass heated to 1000 (±20°C)°C is dropped onto a plate-shaped alloy whose surface is heated to 620°C and inclined at 70 degrees from the horizontal, the molten glass slides off the alloy without adhering to it. Due to this property, when the alloy is applied to actual glass forming processes, friction with the molten glass mass is small and good formability is demonstrated.

[0053] Although the description of the specific embodiment has been completed above, the present invention is not limited to the above embodiment and can be widely modified and implemented. [Industrial Applicability]

[0054] Glass manufacturing components using the Ni-based self-fluxing alloy of the present invention can be used for metal components such as molds, plungers, and rollers, as well as for transport components such as chutes used in bottle-making processes to transport molten glass blocks. [Explanation of symbols]

[0055] 14: Metal material 15: Metal oxide film 16: Molten glass block 20: Sample 21: Molten glass adhesiveness evaluation test device 22: Glass rod 23: Glass rod holder 24: Glass rod heating device 26: Sample holder 27: Sample heating device 28: Burner support frame 29: Burner 30: Heater 31: Thermocouple 32: Temperature controller 42: Mold 43: Molten glass tank 44: Molten glass transport member

Claims

1. A Ni-based self-fluxing alloy used in a glass manufacturing member for conveying or shaping glass having a viscosity of log η = 3 to 14.6, A Ni-based self-fluxing alloy comprising 0% by mass or more and 0.5% by mass or less of B, 0% by mass or more and less than 5% by mass of hard particles, more than 1.5% by mass and less than 7.5% by mass of Si, 0.5% by mass or more and 4% by mass or less of P, 2.5% by mass or more and 30% by mass or less of Cr, Ni as a residue, and unavoidable impurities.

2. 2. The Ni-based self-fluxing alloy according to claim 1, wherein the hard particles are contained in an amount of more than 0 mass % and less than 5 mass %.

3. 3. The Ni-based self-fluxing alloy according to claim 1, wherein the B content is 0% by mass or more and less than 0.03% by mass.

4. 2. The Ni-based self-fluxing alloy according to claim 1, wherein the Si content is 5 mass % or more and less than 7.5 mass %.

5. 5. The Ni-based self-fluxing alloy according to claim 1, wherein the hard particles include at least one of carbide, nitride, oxide, and cermet.

6. 6. The Ni-based self-fluxing alloy according to claim 5, wherein said carbide comprises a carbide of any one of elements of Groups 4, 5 and 6 of the periodic table.

7. 6. The Ni-based self-fluxing alloy according to claim 5, wherein the cermet contains a carbide of any one of elements of Groups 4, 5, and 6 of the periodic table.

8. The Ni-based self-fluxing alloy according to any one of claims 1 to 7, wherein when 0.3 g of molten glass heated to 1000°C is dropped onto the Ni-based self-fluxing alloy in a plate shape whose surface temperature is heated to 620°C and which is inclined at 70 degrees relative to a horizontal plane, the molten glass slides down without adhering to the Ni-based self-fluxing alloy.

9. The Ni-based self-fluxing alloy according to any one of claims 1 to 8, wherein the glass manufacturing member is a member for transporting or shaping glass at 400°C or higher and 1400°C or lower.

10. A glass manufacturing member, in which a portion that comes into contact with molten glass during glass forming is formed using the Ni-based self-fluxing alloy according to any one of claims 1 to 9.

11. A mold for forming glass bottles, formed from the glass manufacturing member according to claim 10.

12. A glass gob transport member formed from the glass manufacturing member according to claim 10.

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