Nickel-chromium-tungsten-molybdenum-cobalt-iron intermediate alloy and preparation method and application thereof
A master alloy, tungsten-molybdenum technology, applied in the field of nickel-chromium-tungsten-molybdenum-cobalt-iron master alloy and its preparation, can solve problems such as inability to recycle and achieve the effect of improving resource utilization
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[0035] The above-mentioned nickel-chromium-tungsten-molybdenum-cobalt-iron master alloy adopts the following preparation method, comprising the following steps:
[0036] S1, take superalloy waste (such as the waste produced in the preparation process of superalloys such as GH4720Li, GH4079, GH4586, GH3230, GH3536, GH4710, GH4098, GH4742, GH520, GH751, GH4099 as shown in Table 1, especially turning waste ) as a raw material, according to the target composition of the nickel-chromium-tungsten-molybdenum-cobalt-iron master alloy, then the raw materials are loaded into the induction furnace in batches for chemical transformation, and when the first batch of raw materials are melted by 80%, the second batch is loaded until After all the raw materials are melted, add 1.2-1.5% C element by weight of the raw materials and then measure the temperature. When the temperature reaches 1550°C, transfer the molten steel into the ladle;
[0037] Among them, the target composition of nickel-ch...
Embodiment 1
[0043] S1, according to the target composition of nickel-chromium-tungsten-molybdenum-cobalt-iron master alloy, different high-temperature alloy turning scraps (standard composition shown in Table 1) are used for batching, and the ratio of different high-temperature alloy turning scraps is shown in Table 2, and then Load the raw materials in batches into a 10-30t medium-frequency induction furnace and energize with high power to melt the materials. When the first batch of raw materials melts by 80%, load the second batch of raw materials and then melt the materials. The charging process is repeated 3 to 4 times. , until all the raw materials are melted, add 1.2-1.5% C element by weight of the raw materials, measure the temperature, and when the temperature reaches 1550°C, transfer the molten steel into the ladle;
[0044] Among them, the target composition of nickel-chromium-tungsten-molybdenum-cobalt-iron master alloy includes the following elements by weight percentage: Cr: 1...
Embodiment 2～4
[0048] Examples 2-4 When preparing nickel-chromium-tungsten-molybdenum-cobalt-iron master alloys, the proportions of different high-temperature alloy turning scraps as shown in Table 2 are used for batching. Other preparation processes are the same as in Example 1, and the obtained nickel-chromium The composition of the tungsten-molybdenum-cobalt-iron master alloy is shown in Table 3.
[0049] Composition and content (wt%) of superalloy of table 1
[0050]
[0051] Table 2 Different superalloy scraps and their proportions (wt%) in raw materials
[0052] Grade Example 1 Example 2 Example 3 Example 4 GH4738 5％ 5％ 5％ 5％ GH4720Li 5％ 5％ 5％ 5％ GH4141 5％ 5％ 5％ 10％ GH4037 20％ 20％ 25％ 15％ GH4698 25％ 35％ 40％ 40％ GH4586 5％ 5％ 5％ 5％ GH3230 10％ 5％ 5％ 5％ GH3536 15％ 10％ 5％ 10％ low carbon ferrochrome 10％ 10％ 5％ 5％
[0053] Table 3 Composition and content (wt%) of nickel-chromium-tungsten-...
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