Application of crucible furnace in the metal industry

Crucible furnaces have a wide range of applications in the metal industry, mainly reflected in non-ferrous metal melting, precious metal processing, magnesium alloy melting, as well as small-scale production or special process requirements. The following is a specific analysis:

1. Nonferrous metal smelting
Application scenario: The crucible furnace is a commonly used equipment in the casting workshops of small and medium-sized non-ferrous alloy processing plants and machine manufacturing plants. It is mainly used to melt non-ferrous metals with low melting points, such as copper, aluminum, and their alloys.
Advantages:
High alloy quality: The alloy melts in the crucible, without direct contact between the furnace charge and combustion products. The chemical composition of the alloy is almost unaffected by furnace gas, and the temperature of the alloy liquid is uniform.
Flexible operation: crucibles made of different materials such as graphite, refractory clay, cast iron, etc. can be selected according to different requirements, with strong adaptability.

2. Precious metal processing
Application scenario: Crucible furnaces play an important role in the smelting, refining, and purification processes of precious metals such as gold, silver, and platinum.
Advantages:
High temperature resistance: Graphite crucibles and other materials can withstand temperatures up to 3650 ℃, meeting the extreme conditions for precious metal melting.
Good chemical stability: It has good corrosion resistance to many metals and alloys, can maintain long-term durability and stability, and improve the quality of precious metal materials.

3. Magnesium alloy melting
Application scenario: Crucible furnaces are widely used in magnesium alloy melting.
Advantages:
Low metal burnout: Compared with the reflector furnace, the metal burnout of the crucible furnace can be reduced by 3 percentage points, and the metal burnout of the reflector furnace can reach 5% or more, while the burnout of the crucible furnace is only about 2%.
Improvement of working environment: Using a crucible furnace to melt magnesium alloy can greatly improve the working environment.

4. Small batch production or special process requirements
Application scenario: For small-scale production or small insulation furnaces used for casting, crucible furnaces are still an ideal choice.
Advantages:
Simple construction, low investment, fast production: suitable for the production needs of small and medium-sized enterprises.
Can meet special process requirements, such as adapting to the melting needs of different metals by replacing crucibles of different materials; By equipping with a vacuum system or inert gas protection device, the requirements for high-purity material preparation can be met.