Isothermal quenching furnace

YiranIsothermal quenching furnaceThe equipment can eliminate stress deformation during workpiece quenching, reduce the tendency of workpiece deformation and cracking, improve the heat treatment accuracy of parts, quickly cool the workpiece to a certain temperature and then insulate it, and control the error within ± 10 ℃. The isothermal quenching furnace can treat steel metal workpieces with austenite and maintain them at a certain temperature for a period of time, resulting in needle like ferrite and carbide eutectoid structure precipitated at a certain interface, which has good comprehensive properties. This structure was later called bainite. The mixture of ferrite formed at lower temperatures and carbides precipitated on certain crystal planes inside ferrite is called lower bainite. The mixed structure of Flat noodles ferrite and carbide precipitated around Flat noodles formed at higher temperature is called upper bainite.

The isothermal quenching furnace heats the steel to austenitize and homogenize it, rapidly cools it to a certain temperature in the given bainite transformation temperature zone, and maintains it at that temperature for a certain period of time to undergo isothermal transformation, forming a bainite structure. Then, it is removed and placed in air for cooling in the heat treatment process. The isothermal temperature is located in the lower half of the curve, which determines the hardness of bainite. In terms of process, the isothermal time is determined based on the start and end times of the C-curve. The actual isothermal time determines the amount of bainite, and the main product is bainite. When isothermal quenching is carried out in a vacuum state, a high-power air-cooled motor should be used in the early stage of equipment quenching to achieve rapid cooling and prevent other phase transitions of the workpiece at high temperatures; By using a hot stirring motor to achieve convection at low temperatures,

1. The motor used for gas cooling in isothermal natural gas quenching furnaces adopts variable frequency control, which can be set according to different heating and insulation conditions.

2. By controlling the switch of the air duct component to achieve the sealing of the heating chamber, the temperature of the heating chamber can be effectively adjusted and maintained, which not only ensures the smooth implementation of the vacuum isothermal quenching process, but also greatly reduces energy waste.

The isothermal trolley type quenching furnace has strong advantages in operating costs: short heating time, fast vacuum pumping, less quenching gas usage, and small workpiece quenching heat deformation. It is precisely because of these advantages that the equipment has a significant competitive advantage in the market, especially in terms of part size requirements. This equipment integrates vacuum quenching and low-temperature tempering. After vacuum isothermal quenching, the workpiece can be tempered without going through a separate vacuum tempering furnace. In the quenching process, the workpiece can achieve the expected quenching target and achieve small quenching deformation after isothermal quenching.