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Method for smelting iron-based nanocrystalline master alloy

An iron-based nanocrystal and master alloy technology, applied in the field of master alloy smelting, can solve the problems of high impurity content of master alloy, burning loss of beneficial elements, large damage to furnace lining, etc., and achieves good spray belt toughness, cost saving, and improvement of smelting efficiency. Effect

Active Publication Date: 2013-04-03
QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for smelting nanocrystalline master alloy, which aims to solve the problems of large damage to furnace lining, serious burning loss of beneficial elements, high impurity content of master alloy, and low smelting efficiency in the process of smelting nanocrystalline master alloy.

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  • Method for smelting iron-based nanocrystalline master alloy
  • Method for smelting iron-based nanocrystalline master alloy

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Embodiment Construction

[0010] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0011] figure 1 It is a flowchart of a method for smelting a nanocrystalline master alloy according to an embodiment of the present invention.

[0012] In step 101, 3-5kg of metallic silicon is spread on the bottom of the furnace, a piece of industrial pure iron is vertically placed in the furnace and touches the bottom of the furnace, and then 6-7 pieces of industrial pure iron are vertically placed on the bottom of the furnace. Metal silicon, and ensure that there is an equal gap between the industrial pure irons, then sprinkle half of the raw material ferroboron into the lower half of the gap in the furnace, sprinkle ferroniobium into the middle gap in the furnace, and sprinkle the remaining ferroboron into the upper part of the furnace half void.

[0013] In step 102, after the material distribution in step 101 i...

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Abstract

The invention relates to a method for smelting an iron-based nanocrystalline master alloy. The method comprises the following process steps of: putting raw materials in a furnace according to the process requirement; vacuumizing, transmitting power, adjusting heating power and time as well as adding residual pure iron into the furnace in the process; insulating for 15 minutes when the temperature reaches at 1520+ / -10 DEG C, stopping power transmission and cooling to 1460 + / -10 DEG C, adding metallic silicon, adjusting the heating power to 100kW, smelting for 30 seconds, adding cathode copper into the furnace after the time is ended and guaranteeing the heating power of 100kW and the smelting time for 30 seconds at the same time; and stopping power transmission and cooling to 1360+ / -10 DEG C, opening a furnace cover, continuously to heat to 1280+ / -10 DEG C, tapping steel and pouring molten steel into a steel ingot mould. Through the reasonable material distribution and the control of heating power and time, the smelting efficiency is improved and the problems of great furnace lining damage, severe burning loss of beneficial elements, high impurity content in the master alloy and the like in the process of smelting nanocrystalline master alloy are effectively solved.

Description

technical field [0001] The invention relates to the technical field of smelting master alloys, in particular to a method for smelting iron-based nanocrystalline master alloys. Background technique [0002] The iron-based nanocrystalline alloy is mainly composed of Fe elements, and a small amount of Nb, Cu, Si, and B elements are added to form an alloy. After rapid solidification, an amorphous material is formed. After heat treatment, microcrystals with a diameter of 10-20nm are obtained. Distributed on an amorphous substrate, it is called iron-based nanocrystalline or iron-based ultrafine crystal material. Iron-based nanocrystals have excellent comprehensive soft magnetic properties: the initial permeability can reach 100,000, the maximum permeability can reach 500,000, the saturation magnetic induction is 1.0-1.2T, and the coercive force is similar to that of cobalt-based amorphous. 20 ~ 100kHz, has smaller loss than iron-nickel alloy, higher B-second and ideal thermal sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/06C22C33/04
Inventor 李晓雨尹丽娟王佳栋王德军
Owner QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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