Method for Measuring Interfacial Oxygen Transfer Rate in the Process of Smelting Superalloys
A high-temperature alloy and rate technology, applied in the field of metallurgy, to achieve the effect of good quality, precise control and low oxygen content
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Embodiment 1
[0053] Electroslag remelting produces an Inconel718 nickel-based superalloy electroslag ingot with a length of 1200 mm and a radius of 180 mm. The process parameters are shown in Table 1. Pre-embed platinum-rhodium thermocouples in the crystallizer (position of thermocouple 1: 600mm in height, 25mm away from the mold wall; position of thermocouple 2: 500mm in height, 35mm away from the wall of the mold; position of thermocouple 3: 550mm in height, The distance from the crystallizer wall is 30mm;), and the measured temperatures are 1795K, 1805K, and 1788K, respectively. The slag temperature is 1825K. At 2400s, the Inconel718 nickel-based superalloy at the place where the thermocouple was embedded was sampled, and the sample was made after cooling. After grinding and polishing, the composition analysis was carried out, and the oxygen content in the slag was 0.1207mol L; the oxygen content in the superalloy was 0.00574mol L, 0.006023mol L, 0.005412mol L. In this embodiment, the...
Embodiment 2
[0057] Electroslag remelting produces an Inconel718 nickel-based superalloy electroslag ingot with a length of 1140 mm and a radius of 220 mm. The process parameters are shown in Table 2. Pre-embed platinum-rhodium thermocouples in the crystallizer (position of thermocouple 1: 600mm in height, 45mm away from the mold wall; position of thermocouple 2: 500mm in height, 25mm away from the wall of the mold; position of thermocouple 3: 550mm in height, The distance from the crystallizer wall is 35mm;), and the measured temperatures are 1802K, 1815K, and 1798K, respectively. The slag temperature is 1835K. At 2600s, samples were taken from the Inconel718 nickel-based superalloy at the place where the thermocouple was embedded, and the samples were made after cooling. After grinding and polishing, the composition analysis was carried out, and the oxygen content in the slag was obtained to be 0.1207mol L; the oxygen content in the superalloy was 0.006152mol L, 0.006912mol L, 0.006058m...
Embodiment 3
[0061] Electroslag remelting produces an Inconel718 superalloy electroslag ingot with a length of 1250 mm and a radius of 190 mm. The process parameters are shown in Table 3. The oxygen content in the atmosphere was 15%. Pre-embed platinum-rhodium thermocouples in the crystallizer (position of thermocouple 1: 600mm in height, 45mm away from the mold wall; position of thermocouple 2: 500mm in height, 25mm away from the wall of the mold; position of thermocouple 3: 550mm in height, 35mm from the crystallizer wall;). At 2500s, the Inconel718 nickel-based superalloy at the embedded thermocouple was sampled, and the sample was made after cooling. After grinding and polishing, the composition analysis was carried out, and the oxygen content in the superalloy was obtained to be 0.000378mol L, 0.000380mol L, 0.000394 mol L. At the same time, the slag was randomly sampled, and the oxygen content in the slag was obtained to be 0.000568mol·L, 0.000562mol·L, and 0.000567mol·L, respectiv...
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