Stick Type Spheroidizing Annealing Furnace

1. Overview of spheroidizing annealing furnace

 The main purpose of spheroidizing annealing is to condense the layered or networked carbides inside the steel material into a spherical shape by heat treatment, so as to improve the cutting performance and processing plasticity of the steel, especially for high-carbon tool steels and bearing steels. This annealing treatment is required.

Second, the use of spheroidizing annealing furnace

  Spheroidizing annealing is mainly suitable for eutectoid steel and hypereutectoid steel, such as carbon tool steel, alloy tool steel, bearing steel, etc. These steels are air-cooled after rolling and forging, and the resulting structure is lamellar pearlite and network cementite. This structure is hard and brittle, not only difficult to cut, but also easily deformed and cracked in the subsequent quenching process. The spherical pearlite structure obtained by spheroidizing annealing, in which the cementite is spherical particles, is dispersed on the ferrite matrix. Compared with the flaky pearlite, it has low hardness and is convenient for cutting and processing. When heating, the austenite grains are not easy to grow, and the deformation and cracking tendency of the workpiece is small when cooling. In addition, spheroidizing annealing can sometimes be used for some hypoeutectoid steels that need to improve cold plastic deformation (such as stamping, cold heading, etc.).

     The whole line of this equipment adopts roller synchronous transmission, and the speed is adjustable by frequency conversion;

     The heating adopts radiant tube and tubular fin heating, with long service life and easy installation and maintenance;

     The program action is controlled by PLC and adopts automatic operation mode;

     The temperature is controlled by imported instruments and recorded by a recorder;

     After the technician sets the process procedure, the operator only needs to load and unload, which is easy to manage and operate