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

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, high beryllium content, and long process, and achieve the effects of reducing oxidation and burning loss, high metal yield, and excellent fatigue resistance

Active Publication Date: 2022-04-05
宁夏中色新材料有限公司
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  • Description
  • Claims
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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 master alloy for beryllium bronze based on electroslag smelting of beryllium bag powder waste
  • Preparation method of master alloy for beryllium bronze based on electroslag smelting of beryllium bag powder waste
  • Preparation method of master alloy for beryllium bronze based on electroslag smelting of beryllium bag powder waste

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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 method for preparing a beryllium bronze master alloy based on electroslag smelting of beryllium cloth bag powder waste, which comprises: uniformly mixing the beryllium cloth bag powder waste and water, followed by isostatic pressing and drying; Gradient heating of copper to 1060-1180°C melts and evenly stirs for 2-4 minutes to obtain molten copper; using molten copper, pour multiple beryllium rods into a T-shaped cavity graphite mold for demoulding to prepare a T-shaped end The beryllium copper sandwich electrode of the head; after the arc is started, the slag is intermittently added to the crystallizer, and then the slag is melted in sections to obtain a slag pool; the T-shaped end of the beryllium copper sandwich electrode is fixed on the electrode holder; The other end of the beryllium-copper sandwich electrode is inserted into the slag pool for segmental electrode melting under the protection of inert gas. The invention can obtain the master alloy for beryllium bronze with uniform beryllium content and low impurity content, and satisfies the requirement of high-purity and large-scale beryllium bronze products.

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 Patents(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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