Preparation method and application of high-temperature alloy bar
A technology for high-temperature alloys and alloy bars, applied in the field of metallurgy, can solve problems such as insufficient strength and poor plasticity, and achieve the effect of improving high-temperature mechanical properties, good plasticity, and good oxidation resistance and corrosion resistance.
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[0043] The preparation method of the high-temperature superalloy bar specifically includes the following steps:
[0044] Step 1. Raw materials of Cr, Co, Ni, Fe, Mo, W, and C are mixed according to the proportion, put into a vacuum induction furnace for melting, high-temperature refining for 25-35 minutes, and the refining temperature is 1600-1650°C, and cast into an alloy ingot .
[0045] Step 2. Forging the alloy ingot. The heating temperature for forging is 1100-1200°C. When forging an electrode rod, the forging ratio is 4-6. Forging an alloy electrode rod, and then remelting. The remelting uses a vacuum electric arc furnace for remelting Or vacuum electroslag remelting to crystallize into remelted steel ingots.
[0046] Step 3: Forging the remelted and remelted steel ingot, the forging heating temperature is 1100-1200°C, the forging ratio is 4-6 when forging an alloy billet, and hot rolling the alloy billet, the hot-rolling temperature range is 1150-1200°C 1250°C, the ho...
Embodiment 1-3
[0049] A method for preparing a superalloy rod according to this embodiment, the method specifically includes the following steps:
[0050] According to the composition ratio of alloys 1 to 3 shown in Table 1, the ingredients were mixed, and the C, Co, Ni, Cr, Mo, W, and Fe raw materials were weighed, put into a 50kg vacuum induction melting furnace for melting, and refined at high temperature for 25 minutes , the refining temperature is 1650°C, and cast into alloy ingots.
[0051] The alloy ingots were forged into alloy electrode rods at a temperature of 1100 °C with a forging ratio of 4. Then remelt in a vacuum electric arc furnace and crystallize into a remelted alloy ingot;
[0052] The remelted alloy ingot is forged, the forging temperature is 1100°C, the blank is forged into an alloy billet, and the forging ratio is 4. After surface grinding and defect detection, the alloy billet is hot rolled into an alloy billet at a temperature of 1150°C, the hot rolling reduction r...
Embodiment 4-6
[0061] A method for preparing a superalloy rod according to this embodiment, the method specifically includes the following steps:
[0062] According to the proportion of alloys 4 to 6 shown in Table 3, the ingredients were mixed respectively, and the raw materials of C, Co, Ni, Cr, Mo, W, and Fe were weighed, put into a 50kg vacuum induction melting furnace for melting, and refined at high temperature for 30 minutes. The refining temperature is 1620°C and cast into alloy ingots.
[0063] The alloy ingot was forged into an alloy electrode rod at a temperature of 1150 °C, and the forging ratio was 5. It is then remelted in a vacuum electric arc furnace and crystallized into a remelted alloy ingot.
[0064] The remelted alloy ingot is forged, the forging temperature is 1150°C, the blank is forged into an alloy billet, and the forging ratio is 5. After surface grinding and defect detection, the alloy billet is hot rolled into an alloy billet at a temperature of 1200, the hot ro...
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