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Preparation method of beryllium bronze master alloy based on beryllium cloth bag powder waste electroslag smelting

A technology of electroslag smelting and beryllium bronze, which is applied in the metallurgy field of metal materials, can solve problems such as environmental hazards, complex production processes, and high beryllium content, and achieve the effects of reducing oxidation and burning loss, low impurity content, and high metal yield

Active Publication Date: 2022-01-28
宁夏中色新材料有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Beryllium cloth bag powder waste is the dust collection material produced during the pulverization process of pure beryllium. It has high beryllium content, small particle size, and high value. For many years, the industry has not been able to establish a good recycling process. Not only is it difficult to recycle , long-term storage will also cause certain harm to the environment
[0003] Beryllium bronze is known as the "King of Elasticity" among copper alloys, and beryllium copper master alloy is one of the indispensable raw materials for the production of beryllium bronze products. The current production method is only carbon reduction method, which has complicated production process and long process , and the produced beryllium copper master alloy has high impurity content, which cannot meet the needs of high-purity, large-scale beryllium bronze products

Method used

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  • Preparation method of beryllium bronze master alloy based on beryllium cloth bag powder waste electroslag smelting
  • Preparation method of beryllium bronze master alloy based on beryllium cloth bag powder waste electroslag smelting
  • Preparation method of beryllium bronze master alloy based on beryllium cloth bag powder waste electroslag smelting

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preparation example Construction

[0056] This embodiment provides a kind of preparation method of master alloy for beryllium bronze based on electroslag smelting of beryllium bag powder waste material, and this preparation method comprises the following steps:

[0057] Step 1: Mix the beryllium cloth bag powder waste and water evenly, and then carry out isostatic pressing molding and drying treatment sequentially to obtain multiple beryllium rods.

[0058] The beryllium bag powder waste is mixed with appropriate amount of water, pressed and formed by an isostatic pressing machine, and processed into a billet (ie beryllium rod) of Φ60-80×400mm, and then dried to remove water. The weight fraction of beryllium bag powder waste and water in this embodiment is 1:0.01-0.06, and the mixing time is 20-30 minutes. The pressure of isostatic pressing is 260-440MPa. The temperature of the drying treatment is 220-240° C., and the drying treatment time is 10.5-12.5 hours.

[0059] Step 2: Gradient heating of copper to 106...

Embodiment 1

[0094] 1. Weigh 8 kg of beryllium cloth bag powder waste, add 0.08 kg of water and mix for 20 minutes, press and form it under the pressure of 260 MPa by an isostatic pressing machine, and process it into 4 sections of Φ60×400 mm billet (ie, beryllium rod), and then heat it at 220 ° C, Dry under the condition of 10.5h to remove moisture.

[0095] 2. Weigh the dried bag powder sticks, and mix them into copper blocks according to the target beryllium content of 4.0% in the beryllium-copper master alloy.

[0096]3. Put the prepared red copper block into the induction furnace crucible and send electricity to carry out gradient heating: use 50KW power to heat up from room temperature to 200°C for 12 minutes; then use 80KW power to heat up from 200°C to 500°C for heat preservation 6 minutes; continue to use 100KW power, heat up from 500°C to 1060°C for 6 minutes; finally use 150KW power, heat up from 1060°C to 1180°C for 2 minutes and keep it for 2 minutes. After 2 minutes, pour th...

Embodiment 2

[0105] 1. Weigh 10 kg of beryllium cloth bag powder waste, add 0.6 kg of water and mix for 30 minutes, press and form it under the pressure of 440 MPa by an isostatic pressing machine, and process it into 4 sections of Φ80×400 mm billet (ie, beryllium rod), and then heat it at 240 ° C, Dry for 12.5 hours to remove moisture.

[0106] 2. Weigh the dried bag powder sticks, and mix them into copper blocks according to the target beryllium content of 4.2% in the beryllium-copper master alloy.

[0107] 3. Put the prepared electrolytic copper into the induction furnace crucible and then send electricity to carry out gradient heating: use 50KW power to heat up from room temperature to 200°C for 18 minutes; then use 80KW power to heat up from 200°C to 500°C for heat preservation 8 minutes; continue to use 100KW power, heat up from 500°C to 1060°C for 8 minutes; finally use 150KW power, heat up from 1060°C to 1180°C for 4 minutes and keep it for 4 minutes. After 3 minutes, pour the cop...

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Abstract

The invention provides a preparation method of beryllium bronze master alloy based on beryllium cloth bag powder waste electroslag smelting. The preparation method comprises the steps that beryllium cloth bag powder waste and water are evenly mixed and then sequentially subjected to isostatic pressing forming and drying treatment; the copper is heated to 1060-1180 DEG C in a gradient mode to be melted and then evenly stirred for 2-4 min, and molten copper liquid is obtained; molten copper liquid is adopted, a plurality of beryllium rods are poured into a T-shaped cavity graphite mold for demolding, and a beryllium copper sandwich electrode with a T-shaped end is prepared; after arcing, slag charge is intermittently added into the crystallizer for segmented slag charge melting, and a slag bath is obtained; the T-shaped end of the beryllium copper sandwich electrode is fixed on an electrode holder; and the other end of the beryllium copper sandwich electrode is inserted into a slag bath, and segmented electrode smelting is carried out under the protection of inert gas. The beryllium bronze master alloy with uniform beryllium content and low impurity content can be obtained, and the requirements of high-purity and large-specification beryllium bronze products can be met.

Description

technical field [0001] The invention belongs to the technical field of metal material metallurgy, and in particular relates to a method for preparing a master alloy for beryllium bronze based on electroslag smelting of beryllium bag powder waste. Background technique [0002] Beryllium cloth bag powder waste is the dust collection material produced during the pulverization process of pure beryllium. Its beryllium content is high, the particle size is small, and the value is expensive. For many years, the industry has not been able to establish a good recycling process. Not only is it difficult to recycle , Long-term storage will also cause certain harm to the environment. [0003] Beryllium bronze is known as the "King of Elasticity" among copper alloys, and beryllium copper master alloy is one of the indispensable raw materials for the production of beryllium bronze products. The current production method is only carbon reduction method, which has complicated production pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C9/00C22B9/18
CPCC22C1/03C22C9/00C22B9/18
Inventor 张金山刘伟锋葛大明焦红忠赵红运邵伟饶晓方
Owner 宁夏中色新材料有限公司
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