A kind of solidification preparation method of cu-cr electric contact alloy
An electrical contact, cu-cr technology, applied in the direction of contacts, circuits, electrical switches, etc., can solve the problems of alloy difficulty, phase segregation, two-phase delamination, etc., and achieve the effect of improving the nucleation rate
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Embodiment 1
[0024] Such as image 3 Cu-10wt%Cr alloy and Cu-10wt%Cr-0.05wt%TiB were cast using copper molds as shown 2 alloy, the inner diameter of the copper mold is 5mm, and the temperature of the copper mold is room temperature before pouring. No TiB added 2 The Cr-rich phase exists in the form of coarse dendrites in the particle sample, and the addition of TiB 2 The Cr-rich phase exists in the form of fine particles in the alloy sample of particles, and the distribution is uniform.
[0025] Its preparation process is as follows:
[0026] Melting Cu-10wt%Cr Alloy and Cu-10wt%Cr-0.05wt%TiB by Electric Arc Furnace 2 Alloy, heat up to 1600°C and keep it warm for 2 minutes, then pour the melt into the copper mold.
Embodiment 2
[0028] Such as Figure 4 Cu-20wt%Cr alloy and Cu-20wt%Cr-0.05wt%TiB were cast using copper molds as shown 2 alloy, the inner diameter of the copper mold is 5mm, and the temperature of the copper mold is room temperature before pouring. No TiB added 2 The Cr-rich phase exists in the form of coarse dendrites in the particle sample, and the addition of TiB 2 The Cr-rich phase exists in the form of dispersed particles in the alloy sample of particles, and the distribution is uniform.
[0029] Its preparation process is as follows:
[0030] Melting Cu-20wt%Cr Alloy and Cu-20wt%Cr-0.05wt%TiB by Electric Arc Furnace 2 Alloy, heat up to 1600°C and keep it warm for 2 minutes, then pour the melt into the copper mold.
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