vacuum furnace
In recent years, due to the rapid development of vacuum heat treatment
furnace, great breakthroughs have been made in vacuum brazing, vacuum sintering,
vacuum annealing and other heat treatment processes. In many vacuum heat
treatment processes, high temperature rapid cooling process is required, which
makes the strong cooling system become a necessary structural component of most
vacuum heat treatment furnaces. The structure of the strong cooling system of
the vacuum heat treatment furnace is generally composed of three parts: the fan,
the heat exchanger and the cooling air duct. The structural types of the strong
cooling system can be generally divided into two types: internal circulation and
external circulation. It is necessary to choose the structure type of the strong
cooling system according to different furnace type and technical requirements.
The structure type and design scheme of the two kinds of strong cooling systems
are introduced respectively. Strong cooling system structure type Strong cooling
system structure type Strong cooling system structure type Strong cooling system
can be divided into internal circulation and external circulation according to
the structure type. For the internal circulation strong cooling system, the
whole structure is in the vacuum chamber inside, using the insulation layer and
the structure between the shell to form a circulating cooling duct, this
structure is compact, the whole structure occupies The utility model has the
advantages of small space and low cost, and is generally suitable for small
vacuum furnaces. The external circulation strong cooling system is connected
with the whole strong cooling system outside the vacuum chamber. The pipe, valve
and vacuum chamber are connected to form the circulating cooling air duct. The
cooling rate of this structure is faster, and it can be applied to the vacuum
heat treatment furnace with large volume and certain cooling speed requirements.
Thus the volume and cost of the vacuum furnace are increased correspondingly.
.
The design of strong cooling system is divided into three parts: fan
design, heat exchanger design and cooling duct design. A qualified strong
cooling system should meet the qualified conditions of three parts at the same
time.
Related products: