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Metal material smelting method

A metal material and smelting method technology, applied in the direction of charge, charging processing type, lighting and heating equipment, etc., can solve the problems of difficult storage, long production cycle, long cycle, etc., to improve purity, simple production process, and reduce smelting. cost effect

Active Publication Date: 2020-05-22
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) After the crucible is used for many times, its ability to remove impurities is weakened, and after the crucible smelts the last batch of metal materials, the impurities in the metal materials are enriched on the inner wall of the crucible, which affects the purity of the next smelting metal materials, resulting in Poor batch stability of smelted metal materials
Replacing a new crucible has the problems of high cost and long cycle
[0005] (2) The preparation cost of calcium oxide crucible and zirconia crucible is high; the preparation cost of calcium oxide crucible is high, the production cycle is long, and storage is difficult; the preparation process of zirconia crucible is immature in China, most of them are imported, so zirconia The crucible has problems such as high cost and long transportation cycle
[0006] (3) The existing technology cannot monitor the temperature of the metal melt in real time during the smelting process

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0044] This embodiment provides a method for smelting metal materials, which includes the following steps:

[0045] Step 1) Make a detachable inner layer of the crucible: as in figure 1 As shown, multiple crucible inner layer modules are installed on the inner wall of the crucible body 1, and the multiple crucible inner layer modules form a detachable crucible inner layer 2 to obtain a double-layer crucible; wherein, the crucible inner layer modules are made of metal It is made of materials with purification effect;

[0046] Step 2) Step of smelting the metal material: placing the metal material in the double-layer crucible for smelting.

[0047] Here, the crucible body 1 in this embodiment may be a commercial crucible, such as a magnesia crucible, an alumina crucible, a calcium oxide crucible, a zirconia crucible, and the like.

[0048] Here, in the metal material smelting method provided in this embodiment, when the metal material is smelted, a detachable crucible inner la...

Embodiment 2

[0051] Preferably, this embodiment provides a method for smelting metal materials. Compared with the previous embodiment, in order to further improve the purity of the smelted metal of metal materials, in this embodiment, in the step of making a detachable inner layer of the crucible :

[0052] Such as image 3 with Figure 4 As shown, the inner layer of the crucible is provided with a holding tank, and a calcium-containing impurity-removing purifier 3 is placed in the accommodating tank; wherein, the calcium-containing impurity-removing purifying agent is located on or near the inner bottom of the crucible body 1 The inner bottom of the crucible body, so that in the later stage of metal smelting, the calcium element penetrates into the molten metal through the gap between the inner modules of the crucible to purify the molten metal.

[0053] Preferably, the calcium-containing impurity removal agent includes an inner layer and an outer layer, and the outer layer wraps the in...

Embodiment 3

[0056] Preferably, this embodiment provides a method for smelting metal materials. Compared with the above embodiments, the steps of making a detachable inner layer of the crucible in this embodiment include:

[0057] 11) A plurality of crucible inner layer modules are placed in the crucible body, and bonded to the inner wall of the crucible body, and the crucible inner layer is formed by stacking to obtain a double-layer crucible.

[0058] In this step, the volume of the inner module of the crucible does not exceed 100 cm 3 . Since the bottom of the crucible body is mostly arc-shaped, and the size of the inner composite module of the crucible is too large, it is difficult to splice into an arc-shape. Here, by making the size of the inner module of the crucible not exceed 100cm 3 , to ensure that the inner layer of the spliced ​​crucible is consistent with the curvature of the inner wall of the crucible body.

[0059] Preferably, the surface roughness Ra of the inner module...

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Abstract

The invention discloses a metal material smelting method, and relates to the technical field of metal smelting. According to the technical scheme mainly adopted by the invention, the metal material smelting method comprises the following steps that a detachable crucible inner layer is manufactured, specifically, the inner wall of a crucible body is provided with a plurality of crucible inner layermodules, the multiple crucible inner layer modules form the detachable crucible inner layer, and a double-layer crucible is obtained, wherein the crucible inner layer modules are made of a material having a purifying effect on molten metal; and metal material smelting is conducted, specifically, a metal material is put into the double-layer crucible to be smelted. The metal material smelting method is mainly used for ensuring the smelting purity degree of the metal material, and the smelting cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of metal smelting, in particular to a metal material smelting method. Background technique [0002] Nickel-based superalloys are key materials for manufacturing hot-end components of aero-engines; the performance of nickel-based superalloys plays a key role in aero-engines. Among them, the performance of nickel-based superalloys mainly depends on the smelting quality of the master alloy. Therefore, how to obtain a high-purity and high-quality master alloy is very important. In addition, the high content of impurity elements in the alloy will form slag inclusions such as oxides and nitrides during the solidification process, which will block the feeding channel of the alloy melt, resulting in microporosity of the cast alloy parts and reducing the qualified rate of the parts; therefore, It is necessary to control the content of oxygen, nitrogen and sulfur in the alloy to a low level. [0003] In the prior ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C19/05C22C33/04C22C38/08F27B14/10F27B14/20
CPCC22C1/023C22C19/05C22C33/04C22C38/08F27B14/10F27B14/20F27B2014/004F27B2014/104F27M2003/13
Inventor 杨彦红周亦胄孙晓峰侯桂臣王新广
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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