Tellurium berylco alloy and preparation method thereof
A technology of beryllium-copper alloy and master alloy, which is applied in the field of free-cutting tellurium-beryllium-copper alloy and its preparation, can solve the problems of large influence of plasticity of copper alloy, poor thermal processing performance of lead-containing beryllium-copper alloy, cracking of beryllium-copper alloy, etc., to achieve Good stability in plastic thermal processing, high temperature softening temperature point, and the effect of improving electrical corrosion resistance
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Embodiment 1
[0044] Fabrication of beryllium tellurium copper tubes by extrusion
[0045] (1) Dosing is carried out according to the weight percentage of Table 1, and the feeding order is successively cathode copper CATH-1, copper-beryllium master alloy (containing beryllium 4%), pure tellurium, copper-nickel master alloy (containing nickel 10%), copper-cobalt master alloy (Containing 10% cobalt), using a 750Kg power frequency cored furnace for melting and non-vacuum induction furnace, the melting temperature is 1170 ° C, until the melt melts, keep it warm for 15 minutes, pass in argon gas to remove impurities and gases, after degassing and removing impurities , stand still for 15 minutes, and then cast a Φ155 round ingot with a hydraulic semi-continuous casting machine, casting temperature 1100 ° C, argon protection, casting speed 150-250mm / min, cooling water pressure 0.3MPa, sawing cut length Φ155×330;
[0046] (2) The round ingot is hot-extruded at a temperature of 910°C, the extrusion ...
Embodiment 2
[0057] Embodiment 2: Continuous casting method prepares beryllium tellurium copper bar
[0058] (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% of cobalt), using vacuum induction furnace for smelting, firstly adding cathode copper CATH-1, copper-tellurium master alloy (containing 10% of tellurium), copper-nickel master alloy (containing 10% of nickel), Copper-cobalt master alloy (containing 10% cobalt), after melting, use a vacuum feeding device to add copper-tellurium master alloy (containing 10% tellurium), copper-beryllium master alloy (containing 10% beryllium), after melting, heat up to 1270 ° C, and remove slag at high temperature , then lower the temperature to 1120°C with low power, and keep it warm for 20 min...
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