High-compactness zirconium-based bulk amorphous alloy casting with the weight of kilogram or above and casting method thereof
An amorphous alloy, kilogram-level technology, applied in the field of high-density zirconium-based bulk amorphous alloy castings and its casting, can solve the problem of slow melt temperature rise, inability to meet the needs of casting mold filling integrity, pollution of amorphous alloy melt Body and other problems, to achieve the effect of increasing the cooling rate
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Embodiment 1
[0068] (1) Detection and preparation of the melting system: first, turn on the circulating cooling water system of the vacuum induction melting furnace, check whether the waterway is smooth or leaking, and turn on the power supply of the diffusion pump to preheat the diffusion pump. The preheating time is 40 minutes.
[0069] (2) Place the mold and charge: open the furnace cover of the vacuum induction melting furnace, and make industrial red copper such as Figure 5 The two round tube molds shown are brought together and fastened, and placed as Figure 8 In the shown fixed position in the vacuum induction melting furnace, a graphite sprue cup is placed at the sprue port of the mold; then 4.7 kg of Zr 41.2 Ti 13.8 Cu 12.5 Ni 10 be 22.5 The furnace charge of alloy composition, after the charge is loaded, close the furnace cover, and check whether all valves are closed; the surface anti-pollution treatment process of the high-purity graphite crucible is: 100g of zirconia pow...
Embodiment 2
[0076] The casting method is basically the same as in Example 1, except that the pouring temperature is adjusted from "900°C" to "1000°C" to obtain a zirconium-based bulk amorphous alloy round tube casting.
[0077] Since the casting temperature of Example 2 has increased, although the filling is not complete, the filling capacity of Example 1 has been improved, as Figure 9 The round tube real thing shown in the embodiment 2 marked in.
[0078] Sampling on the obtained circular tube casting, test its structural characteristics with X-ray diffraction analyzer (XRD) (see Figure 14 Middle embodiment 2), judge whether the casting obtained is amorphous alloy with this. The results of the density test and the compression mechanical property test are shown in Table 1 and the experimental results of Example 2 in Table 2.
Embodiment 3
[0080] The casting method is basically the same as in Example 1, except that the pouring temperature is adjusted from "900°C" to "1100°C" to obtain a zirconium-based bulk amorphous alloy round tube casting.
[0081] Because the pouring temperature of embodiment 3 is suitable, obtained the qualified circular tube casting that filling mold is complete, shape is clear, as Figure 9 The round tube real thing shown in embodiment 3 marked in.
[0082] Sampling on the obtained circular tube casting, test its structural characteristics with X-ray diffraction analyzer (XRD) (see Figure 14 Middle embodiment 3), judge whether the casting obtained is amorphous alloy with this. The results of the density test and compression mechanical property test are shown in Table 1 and the experimental results of Example 3 in Table 2.
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