The production process of a castable and wrought alloy beryllium copper alloy and its processed material is divided into production of a beryllium-copper master alloy, a beryllium copper alloy smelting, a copper alloy ingot and a beryllium copper alloy sheet, strip, and the like by a carbon thermal reduction method. Bar production four steps.
The production of a ruthenium-copper master alloy by a carbothermal method refers to the reduction of ruthenium in ruthenium oxide directly with molten carbon in molten copper followed by alloying in copper. Industrial production of bismuth-copper master alloys by carbon-thermal reduction is carried out in an electric arc furnace. The electric arc furnace is placed in a sealed container. The operator wears a respirator mask, first 10%-13% yttrium oxide and 3%-7. The % carbon powder is mixed and ground in a ball mill, then a layer of copper, a layer of yttrium oxide and a mixture of carbon powder are charged into the electric arc furnace in batches, and the electric current is melted. After melting, the electric power is agitated, and the temperature in the furnace reaches 2000 degrees Celsius. When cooled to 950 degrees Celsius--1000 degrees Celsius, the alloy's name is tantalum carbide, carbon, and residual powder floats, slagging, and is then cast into an ingot of 2.25 kilograms or 5 kilograms at 950 degrees Celsius.
The charge used in melting beryllium copper alloys includes new metals, scrap, secondary remelts, and master alloys.é“Generally used é“-copper master alloy (including é“4%); Nickel is sometimes a new metal, ie, electrolytic nickel, but nickel-copper master alloy (20% nickel) is preferred; Cobalt-copper master alloy ( Cobalt 5.5%). Some of them are also made of pure cobalt. Titanium is made of titanium-copper master alloy (containing 15% of titanium and 27.4% of titanium). Some of them are directly added with titanium sponge; magnesium is magnesium- The copper master alloy (containing 35.7% of magnesium) was added. Debris (milled cuttings, cuttings, etc.) and small scraps produced during processing are generally remelted and then cast into ingots as smelting charge; in addition to re-melted remelted material, during batching It is also common to add some casting and processing waste directly to the furnace.
Beryllium copper alloy ingots are divided into non-vacuum ingots and vacuum ingots. Non-vacuum ingot methods currently used in the practice of beryllium copper alloy production include tilted iron die cast ingots, no-flow ingots, semi-continuous ingots, and continuous ingots. The first two methods are only used in smaller production plants. According to experts, in order to obtain a beryllium copper alloy ingot with low gas content, small segregation, low inclusion content, and uniform crystal structure, the best method is vacuum ingot after vacuum ingot casting. Vacuum ingots have a significant effect on ensuring the content of easily oxidizing elements such as barium and titanium. If necessary, inert gas can also be used to protect the ingot process.
The steps for the production of beryllium copper alloy plates, strips and strips are ingot casting - surface milling - heating (800 degrees Celsius - 900 degrees Celsius) - hot rolling - water quenching - milling - cold rolling - degreasing - Solution heat treatment - pickling - passivation.
The production of a ruthenium-copper master alloy by a carbothermal method refers to the reduction of ruthenium in ruthenium oxide directly with molten carbon in molten copper followed by alloying in copper. Industrial production of bismuth-copper master alloys by carbon-thermal reduction is carried out in an electric arc furnace. The electric arc furnace is placed in a sealed container. The operator wears a respirator mask, first 10%-13% yttrium oxide and 3%-7. The % carbon powder is mixed and ground in a ball mill, then a layer of copper, a layer of yttrium oxide and a mixture of carbon powder are charged into the electric arc furnace in batches, and the electric current is melted. After melting, the electric power is agitated, and the temperature in the furnace reaches 2000 degrees Celsius. When cooled to 950 degrees Celsius--1000 degrees Celsius, the alloy's name is tantalum carbide, carbon, and residual powder floats, slagging, and is then cast into an ingot of 2.25 kilograms or 5 kilograms at 950 degrees Celsius.
The charge used in melting beryllium copper alloys includes new metals, scrap, secondary remelts, and master alloys.é“Generally used é“-copper master alloy (including é“4%); Nickel is sometimes a new metal, ie, electrolytic nickel, but nickel-copper master alloy (20% nickel) is preferred; Cobalt-copper master alloy ( Cobalt 5.5%). Some of them are also made of pure cobalt. Titanium is made of titanium-copper master alloy (containing 15% of titanium and 27.4% of titanium). Some of them are directly added with titanium sponge; magnesium is magnesium- The copper master alloy (containing 35.7% of magnesium) was added. Debris (milled cuttings, cuttings, etc.) and small scraps produced during processing are generally remelted and then cast into ingots as smelting charge; in addition to re-melted remelted material, during batching It is also common to add some casting and processing waste directly to the furnace.
Beryllium copper alloy ingots are divided into non-vacuum ingots and vacuum ingots. Non-vacuum ingot methods currently used in the practice of beryllium copper alloy production include tilted iron die cast ingots, no-flow ingots, semi-continuous ingots, and continuous ingots. The first two methods are only used in smaller production plants. According to experts, in order to obtain a beryllium copper alloy ingot with low gas content, small segregation, low inclusion content, and uniform crystal structure, the best method is vacuum ingot after vacuum ingot casting. Vacuum ingots have a significant effect on ensuring the content of easily oxidizing elements such as barium and titanium. If necessary, inert gas can also be used to protect the ingot process.
The steps for the production of beryllium copper alloy plates, strips and strips are ingot casting - surface milling - heating (800 degrees Celsius - 900 degrees Celsius) - hot rolling - water quenching - milling - cold rolling - degreasing - Solution heat treatment - pickling - passivation.