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Preparation method of high beryllium copper alloy strip material short process for dynode of photomultiplier

A technology of photomultiplier tube and beryllium copper alloy is applied in the field of preparation of beryllium copper alloy strip, which can solve the problems of poor microstructure, many pores of beryllium copper strip billet, low beryllium mass fraction, etc., and achieves good tissue lethality. , to meet the requirements of industrial continuous mass production, and the effect of good tissue density

Active Publication Date: 2018-12-07
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the mass fraction of beryllium in the existing beryllium copper strip is low, there are many pores in the beryllium copper strip blank, the compactness of the structure is not good, macro segregation occurs and the production efficiency is low, and a photoelectric Short-process preparation method of high-beryllium-beryllium-copper alloy strip for multiplier tube multiplier

Method used

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specific Embodiment approach 1

[0031] Embodiment 1: This embodiment is a short process preparation method of high beryllium-beryllium-copper alloy strip for photomultiplier tube multiplier, which is completed according to the following steps:

[0032] 1. Preparation of billets:

[0033] ①. First, according to the mass percentage of each element Be: 2.5% ~ 3.5%, Co: 0.35% ~ 0.65%, Ni: ≤0.31%, Fe: ≤0.058%, Al: ≤0.013%, Si: ≤0.028%, Pb: ≤0.0020%, Cd: ≤0.0020%, Zn: ≤0.0020%, the sum of other elements ≤0.43%, and the balance Cu, respectively weigh pure copper, beryllium-copper master alloy with a mass fraction of beryllium of 10%, and cobalt;

[0034] ②. Put the pure copper weighed in step ①, the beryllium-copper master alloy with a mass fraction of beryllium of 10% and pure cobalt into the vacuum intermediate frequency furnace in turn, and then smelt at a melting temperature of 1200 ° C ~ 1300 ° C for 30 minutes ~ 60min, obtain the alloy melt after refining;

[0035] ③. Remove the scum on the surface of the r...

specific Embodiment approach 2

[0056] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step ①, first, according to the mass percentage of each element Be: 2.5% to 2.8%, Co: 0.35% to 0.41%, Ni: ≤0.31%, Fe : ≤0.058%, Al: ≤0.013%, Si: ≤0.028%, Pb: ≤0.0020%, Cd: ≤0.0020%, Zn: ≤0.0020%, the sum of other elements ≤0.43% and the balance Cu, respectively weighed Pure copper, a beryllium-copper master alloy with a mass fraction of beryllium of 10%, and cobalt. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0057] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that in step ①, first, according to the mass percentage of each element Be: 2.8%~3.5%, Co: 0.41%~0.65%, Ni:≤ 0.31%, Fe: ≤0.058%, Al: ≤0.013%, Si: ≤0.028%, Pb: ≤0.0020%, Cd: ≤0.0020%, Zn: ≤0.0020%, the sum of other elements ≤0.43% and the balance Cu , Weighing pure copper, beryllium-copper master alloy with a mass fraction of beryllium of 10% and cobalt respectively. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a preparation method of a high beryllium copper alloy strip material short process for a dynode of a photomultiplier, and relates to a preparation method of the beryllium copper alloy strip. The problems that the mass fraction of beryllium in an existing beryllium copper strip is low, the porosity of a beryllium copper strip is large, the compactness of a structure is poor, macroscopic segregation is generated and production efficiency is low are solved; the method comprises the following steps that 1, semi-continuous preparation is carried out to prepare a blank; 2, extrusion is carried out; 3, rolling and acid pickling are carried out; and 4, finish rolling, annealing and winding are carried out to obtain the high beryllium copper alloy strip for the dynode of the photomultiplier. According to the method, a peak secondary electron emission coefficient of the high beryllium copper alloy strip for the dynode of the photomultiplier prepared by the method is 8.4-10.8, the tensile strength is 645.4 MPa-670.2 MPa, the yield strength ranges from 314.8 MPa-360.9 MPa, and the percentage elongation after fracture is 15%-19%; and the high beryllium copper alloy strip for the dynode of the photomultiplier can be obtained.

Description

technical field [0001] The invention relates to a preparation method of a beryllium copper alloy strip. Background technique [0002] Because of its excellent secondary electron emission performance, beryllium bronze alloy is an ideal raw material for the photomultiplier tube multiplier. The photomultiplier tube made of beryllium bronze alloy has a high secondary electron emission coefficient, a long service life and a high output stability. Lightweight, small, high-reliability photomultiplier tubes are important electronic components of aerospace vehicles such as manned spacecraft, satellites, and aircraft. In order to meet the secondary electron emission performance requirements of high-performance photomultiplier tubes, increasing At the same time, it is imperative to reduce the number of dynodes while reducing the number of dynodes. This puts forward higher requirements for the secondary electron emission performance of a single dynode. The commonly used C17200 with a b...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/03C22F1/08C23G1/10B23P13/00
CPCB23P13/00C22C1/03C22C9/00C22F1/08C23G1/103
Inventor 朱戴博刘洋徐俊瑞彭金峰韩坦
Owner XIANGTAN UNIV
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