Beryllium copper alloy smelting is divided into: non-vacuum smelting, vacuum smelting. According to experts, non-vacuum smelting generally uses an ironless intermediate frequency induction furnace, using a frequency conversion unit or a thyristor frequency conversion, the frequency is 50 Hz – 100 Hz, and the furnace capacity is 150 kg to 6 tons (usually more than 1 ton). The operation sequence is as follows: add nickel or its master alloy, copper, scrap and charcoal to the furnace in turn, add titanium or its master alloy, cobalt or its master alloy after melting, add copper beryllium master alloy after melting, stir and scrape after complete melting. Slag, pouring out of the furnace. The melting temperature of high-strength beryllium copper alloy is generally 1200 degrees Celsius – 1250 degrees Celsius.
Vacuum smelting furnaces for vacuum smelting are divided into medium-frequency vacuum induction furnaces and high-frequency vacuum induction furnaces, which are divided into vertical and horizontal types according to the layout. Vacuum induction furnaces generally use electric magnesia or graphite crucibles as furnace linings. The outer shell is double-layered furnace walls, which are cooled by water cooling jackets. There are stirring devices and sampling devices above the crucible, which can be stirred or sampled in a vacuum state. Some are also equipped with a special feeding box on the furnace cover. The box can hold different alloy furnace flames. Under the vacuum state, the charge is sent to the feeding trough in turn, and the charge is evenly fed into the crucible through the electromagnetic vibrator through the hopper. . The maximum capacity of the vacuum induction circuit can reach 100 tons, but the capacity of the furnace for melting beryllium copper alloy is generally 150 kg to 6 tons. The operation sequence is as follows: firstly put nickel, copper, titanium and alloy scraps into the furnace in sequence, evacuate and heat up, and refine for 25 minutes after the materials are melted.