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Preparation method of easy-for-turning Be-Cu alloy resistant to high-temperature softening and stress relaxation

A beryllium-copper alloy and stress relaxation technology, which is applied in the field of easy-turning beryllium-copper alloy preparation, can solve the problems of high temperature softening resistance and low stress relaxation resistance, achieve good high temperature stability, improve cutting performance, and maintain stress relaxation resistance Effect

Inactive Publication Date: 2021-05-25
KINKOU SUZHOU COPPER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional beryllium copper materials have disadvantages such as high temperature softening resistance and low stress relaxation resistance. Therefore, many studies have proposed to use copper nickel silicon, copper nickel tin, etc. to replace beryllium copper. There is still a gap with beryllium copper materials

Method used

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  • Preparation method of easy-for-turning Be-Cu alloy resistant to high-temperature softening and stress relaxation
  • Preparation method of easy-for-turning Be-Cu alloy resistant to high-temperature softening and stress relaxation
  • Preparation method of easy-for-turning Be-Cu alloy resistant to high-temperature softening and stress relaxation

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specific Embodiment approach

[0027] Below in conjunction with embodiment, further illustrate the present invention.

Embodiment 1

[0030] Preparation of beryllium copper tubes by extrusion

[0031] (1) Dosing according to the weight percentage in Table 1, the order of feeding is followed by cathode copper CATH-1, beryllium Be0.4wt.%, tellurium Te 0.35wt.%, Co+Ni is 2wt.%, Co+Ni+Fe is 2.05 wt.%, use 750Kg power frequency cored furnace non-vacuum induction furnace for melting, the melting temperature is 1170 ° C, after melting, keep warm for 15 minutes, pass in argon gas to remove impurities and gases, after degassing and removing impurities, let stand for 15 minutes, The ingot was prepared by vacuum spray deposition under a low-pressure argon protective atmosphere; the argon pressure was 0.1Pa, the deposition roller speed was 800r / min, and an ingot with a diameter of 75mm and a height of 300mm was prepared;

[0032] (2) The round ingot is hot-extruded at a temperature of 910°C, the extrusion ratio is 53:1, the extruder is a 2150T double-action horizontal extruder, and a tube blank with an outer diameter of...

Embodiment 2

[0043] Preparation of Beryllium Copper Rods

[0044] (1) carry out batching according to table 4 weight percent, raw material is cathode copper CATH-1, copper-beryllium master alloy (containing beryllium 10%), copper-tellurium master alloy (containing tellurium 10%), copper-nickel master alloy (containing nickel 10%) ), copper-cobalt master alloy (containing 10% cobalt); feed intake twice;

[0045] First add cathode copper CATH-1, copper-tellurium master alloy (containing 10% tellurium), copper-nickel master alloy (containing 10% nickel), copper-cobalt master alloy (containing 10% cobalt), and use a feeding device to add copper-tellurium master alloy after melting Alloy (containing 10% tellurium), copper-beryllium master alloy (containing 10% beryllium), heat up to 1270°C after melting, keep warm for 15 minutes after melting, pass in argon gas to remove impurities and gases, after degassing and removing impurities, let stand for 15 minutes ;

[0046] The ingot is prepared by...

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Abstract

The invention discloses a preparation method of an easy-for-turning Be-Cu alloy resistant to high-temperature softening and stress relaxation. The easy-for-turning Be-Cu alloy comprises 0.2-2.1 wt.% of Be, 0.1-0.7 wt.% of Te, more than 0.2 wt.% of Co and Ni, less than 0.7 wt.% of Co, Ni and Fe, no more than 4 wt.% of the sum of impurity elements, and the balance Cu. The preparation method comprises the following steps: a, carrying out blending, feeding, smelting and spray deposition according to the weight percentage, so as to obtain an ingot blank; and b, subjecting the ingot blank obtained in the step a to homogenizing heat treatment, hot machining technology, cold working technology as well as annealing, solid solution and aging heat treatment, so as to obtain the easy-turning Be-Cu alloy. Compared with that of a traditional high-Be Be-Cu alloy, the high-temperature softening temperature point of the the easy-for-turning Be-Cu alloy is improved by 75 DEG C + / - 10 DEG C; compared with that of a traditional low-Be Be-Cu alloy, the high-temperature softening temperature point of the the easy-for-turning Be-Cu alloy is improved by 90 DEG C + / - 10 DEG C; compared with that of a traditional Be-Cu alloy, the stress relaxation resistance of the easy-for-turning Be-Cu alloy is improved by 30%; and the Be-Cu material application working condition range is enlarged.

Description

technical field [0001] The invention relates to a method for preparing an alloy, in particular to a method for preparing an easy-to-turn beryllium-copper alloy resistant to high temperature softening and stress relaxation. Background technique [0002] Beryllium copper is a copper-based alloy material with beryllium as the basic alloying element, which belongs to the copper-based alloy strengthened by aging precipitation. After solid solution and aging heat treatment, the material has high strength, hardness and elastic limit, small elastic hysteresis, good stability, fatigue resistance, corrosion resistance, wear resistance, low temperature resistance, non-magnetic, high electrical and thermal conductivity, With a series of excellent comprehensive properties such as no sparks when impacted, it is known as the "king of colored elastic materials" and is widely used in electronics, electrical, communication, instruments, meters, telecommunications, light industry, machinery, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C9/06C22C1/03B22D11/06B22D11/18C22F1/08C21D1/26
CPCC22C9/00C22C9/06C22C1/03B22D11/0611B22D11/18C22F1/08C21D1/26
Inventor 韩坦朱戴博陈红
Owner KINKOU SUZHOU COPPER IND CO LTD
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