The heat treatment basket is typically made of metal or graphite. These materials are chosen for their ability to withstand long-term high-temperature use without deformation, typically in the range of 900 to 1200 °C, and for their stable bearing capacity. This makes them particularly suitable for use in vacuum sintering furnaces, vacuum brazing furnaces, vacuum quenching furnaces, and other vacuum heat treatment industries.
Metal and Graphite Materials:
- Metal: The metal used in heat treatment baskets can include various types such as tool steels, carburizing steels, high-strength low-alloy (HSLA) steels, alloyed steels, stainless steels, and superalloys. These materials are selected based on their thermal resistance and structural integrity under high temperatures. Superalloys, for instance, are heat-resistant materials based on nickel, iron-nickel, and cobalt-nickel, which are excellent for maintaining strength at high temperatures.
- Graphite: Graphite is another material used due to its high thermal conductivity and resistance to thermal shock. It is particularly useful in applications where maintaining a stable temperature is crucial, such as in vacuum furnaces. Graphite's ability to withstand high temperatures without significant deformation makes it a preferred choice for heat treatment processes.
Application and Customization: The baskets are available in various specifications, including flat plate and basket types, and can be customized according to user needs. This customization includes different shapes, sizes, and configurations like round grids, square grids, multiple trays bolted together, and more. The design can be tailored to fit specific furnace layouts and operational requirements.
Processes and Industries: Heat treatment baskets are integral to processes such as annealing, sintering, tempering, brazing, hardening, low-pressure carburizing and nitriding, and solution heat treating. They serve industries ranging from aviation and automotive to medical and nuclear, where the precise control of heat treatment is critical for the quality and performance of the materials being processed.
In summary, the choice of material for a heat treatment basket is crucial to ensure that it can withstand the rigorous conditions of heat treatment processes. Both metal and graphite are excellent choices due to their high-temperature resistance and structural stability, making them ideal for a wide range of industrial applications.
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