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
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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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