Preparation method for smelting electrodes

Abstract

A preparation method for smelting electrodes comprises the following steps of firstly, providing strip-shaped raw materials which are used for preparing electrodes and qualified through surface inspection and distinguishing the strip-shaped raw materials according to lengths; secondly, arranging the distinguished raw materials in forming dies of corresponding specifications according to the principle that the raw materials of large lengths are arranged on the periphery and the raw materials of small lengths are arranged inside to enable the raw materials to be formed into columnar raw materials; and thirdly, after the columnar raw materials are fastened through a fastening device, bundling the columnar raw materials with metal strips to enable the columnar raw materials to be formed into the smelting electrodes. According to the preparation method, strip-shaped scraps of plates, tubes, rods and the like produced during machining of metal are used as raw materials, so that the strip-shaped scraps are formed in a column shape through simple steps and formed into the smelting electrodes in a metal strip bundling mode, the preparation method replaces a conventional welding method to prepare electrodes, metallurgical defects of oxide and nitride inclusion brought in during electrode preparation through the conventional welding method can be effectively overcome, and the requirement for smelting high-quality materials can be met.

Description

technical field [0001] The invention belongs to the technical field of alloy ingot manufacturing, and in particular relates to a method for preparing an electrode for smelting. Background technique [0002] Whether it is vacuum consumable electric arc furnace, shell furnace, electron beam furnace, plasma furnace and other smelting equipment, or even the latest smelting technologies such as electron beam cold hearth furnace and plasma cold hearth furnace, electrodes need to be prepared according to the process during smelting, and electrodes The conventional method of preparation is to use the welding method, and for raw materials such as plates, tubes, and rods, the welding method cannot implement inert gas protection during welding, resulting in severe oxidation and nitriding of the raw material welding area, and due to the raw materials such as plates, tubes, and rods. The internal gap of the electrode is large, so that the severely oxidized and nitrided tumor will leak in...

AI Technical Summary

Problems solved by technology

[0002] Whether it is vacuum consumable electric arc furnace, shell furnace, electron beam furnace, plasma furnace and other smelting equipment, or even the latest smelting technology such as electron beam cold hearth furnace and plasma cold hearth furnace, electrodes need to be prepared according to the process during smelting, and electrodes The conventional method of preparation is to use the welding method, and for raw materials such as plates, tubes, and rods, the welding method cannot implement inert gas protection during welding, resulting in severe oxidation and nitriding of the raw material welding area, and due to the raw materials such as plates, tubes, and rods. The internal gap of the electrode is large, so that the severely oxidized and nitrided tumor will leak into the electrode

Therefore, electrodes prepared by conventional welding methods have a large number of serious oxidation and nitriding defects. Because the melting points of oxides and nitrides are much higher than the metal itself, and these oxides and nitrides cannot be completely melted during smelting, they will be cast There are a large number of fatal inclusion defects inside the ingot, and the distribution is extremely wide, and there is a great quality hidden danger