High vacuum electric furnace annealing tool

11-04-2025       Author: KJ technology

A high vacuum electric furnace can be used for tool annealing, which effectively eliminates tool processing stress, refines grain size, and improves mechanical properties through high vacuum environment and precise temperature control technology. The specific explanation is as follows:

1. The principle of annealing cutting tools in high vacuum electric furnace

Vacuum environment inhibits oxidation:

A high vacuum electric furnace extracts gas from the furnace through a vacuum pump, creating a near vacuum environment that effectively reduces the contact between tool materials and oxygen during annealing, thereby avoiding oxidation reactions. This is crucial for maintaining the purity and performance of tool materials.

Accurate temperature control promotes organizational optimization:

The high vacuum electric furnace is equipped with advanced temperature control system, such as PID intelligent temperature control module, which can accurately control the annealing temperature, ensuring that the temperature of the tool material is uniform and stable during the heating process. By precise temperature control, the grain refinement of tool materials can be promoted, tissue defects can be eliminated, and the mechanical properties of materials can be improved.

Uniform heating and cooling:

The high vacuum electric furnace adopts a circular heating design, such as metal molybdenum screen circular heating, to achieve good temperature uniformity. At the same time, the equipment can be equipped with a water cooling system to achieve fast and uniform cooling, which helps to further optimize the organizational structure of tool materials.

2. Application examples of high vacuum electric furnace annealing tools

Annealing treatment after tool welding:

Welding is a common joining process in the manufacturing of cutting tools. However, the welding process generates residual stress, which affects the performance and service life of the cutting tool. High vacuum electric furnaces can be used for annealing treatment of tool welding, eliminating residual stress through precise temperature control, and improving the toughness and fatigue life of tools.

Bright annealing of tool materials:

Bright annealing is an important heat treatment process for cutting tool materials such as stainless steel. A high vacuum electric furnace can perform bright annealing treatment in a vacuum or protective atmosphere environment, keeping the surface of the tool material smooth, without oxidation or decarburization, and improving the appearance quality and corrosion resistance of the tool.

Solution treatment of cutting tool materials:

For certain special alloy cutting tool materials, solution treatment is a key step in improving their performance. High vacuum electric furnaces can provide a uniform high-temperature environment, allowing alloy elements to fully dissolve in the matrix, forming a uniform solid solution, thereby improving the hardness and wear resistance of cutting tools.

3. Advantages of high vacuum electric furnace annealing tools

Improve tool performance:

By annealing in a high vacuum electric furnace, the internal stress of the cutting tool material can be eliminated, the grain size can be refined, and the plasticity, toughness, and processing performance of the material can be improved. This helps to extend the service life of the tool and improve machining efficiency.

Maintain material purity:

The high vacuum environment effectively suppresses the oxidation reaction of the tool material during annealing, maintaining the purity of the material. This is particularly important for tool manufacturing that requires high-purity materials.

Energy conservation and environmental protection:

The high vacuum electric furnace adopts advanced heating and cooling technology, with high energy utilization efficiency. Meanwhile, the annealing process reduces gas emissions, which is beneficial for environmental protection.