A kind of superalloy smelting method

Abstract

The invention belongs to the technical field of alloy smelting, specifically a high-temperature alloy smelting method, and the specific steps are as follows: S1. Charging period: use a vacuum induction furnace for smelting, power on in advance to heat and dry the crucible in the vacuum induction furnace, Put the bottom slag inside the dried crucible, then put the metal raw materials into the furnace together, and at the same time put the charge in the supplementary hopper; the bottom slag can effectively block the influence of the surrounding air on the molten metal, and achieve effective isolation In addition to the oxidation of the molten metal by the environment, the sulfide in the metal will react with the bottom slag to complete a desulfurization and anti-oxidation; through the desulfurization and deoxidation of the vulcanizing agent and oxidant, the desulfurization and deoxidation of the molten metal are completed; through The top of the crucible main body is detachably connected with an extension cover, which solves the problem that the melt splashes out of the crucible main body mouth due to workers injecting too much metal and supplementary material into the crucible.

Description

technical field [0001] The invention belongs to the technical field of alloy smelting, and specifically relates to a high-temperature alloy smelting method. Background technique [0002] Superalloys refer to a class of metal materials based on iron, nickel, and cobalt, which can work for a long time at high temperatures above 600°C and under certain stresses. They have excellent high-temperature strength, good oxidation resistance and thermal corrosion resistance, and good Comprehensive properties such as fatigue performance and fracture toughness. Superalloys can be obtained by smelting electroslag furnaces and vacuum waste furnaces. [0003] Some technical solutions for superalloy smelting have also appeared in the prior art. For example, a Chinese patent with application number 201610631062.1 discloses a high-purity nickel or superalloy smelting method using pure calcium wire. The steps of the method are as follows: (1) smelting in a vacuum induction melting furnace and...

AI Technical Summary

Problems solved by technology

[0005] In order to make up for the deficiencies of the existing technology, it solves the problem of reducing the oxygen content in the alloy through the carbon-oxygen reaction in the existing high-temperature alloy smelting method, without synchronously reducing the sulfur content in the alloy and removing non-metallic impurities. Single, the ability to clean non-metallic impurities is relatively poor, and when the metal and charge are put into the crucible on the inner wall of the vacuum induction melting furnace, it is relatively difficult to control the distance between the metal liquid level and the crucible mouth, which increases the difficulty of work for the staff. The present invention A proposed high temperature alloy smelting method

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