CN201250251Y - Vacuum degreasing sintering-quenching integrated furnace - Google Patents

Abstract

This utility model discloses a vacuum dewaxing, sintering, and quenching integrated furnace, comprising a furnace body (1) and a furnace chamber (2). A fan corresponding to the furnace chamber (2) is provided on the furnace body (1). A collector (5) and a guide hood (3) corresponding to the furnace chamber (2) are provided at the outlet end of the fan. A radiator (4) is also provided at the outlet end of the fan. This utility model can complete the dewaxing, sintering, and gas quenching processes in one step, simplifying the production process, improving production efficiency, and having a compact overall structure, small footprint, and low energy consumption.

Description

A vacuum degreasing, sintering and quenching integrated furnace

technical field

The utility model relates to a vacuum degreasing and sintering integrated furnace, in particular to a vacuum degreasing, sintering and quenching integrated furnace.

Background technique

The integrated vacuum degreasing and sintering furnace is a horizontal vacuum heat treatment equipment with the functions of vacuum degreasing and vacuum sintering. This equipment cannot be directly quenched and heat treated after sintering. This equipment is not suitable for hard alloy products that require direct quenching and heat treatment after sintering, nor can it be used for vacuum quenching of tool steel, die steel, high alloy steel, stainless steel, copper alloy, etc. Vacuum brazing of nickel-based, copper-based, silver-based brazing and other products, not to mention vacuum heat treatment such as degassing, annealing, tempering, etc., can not be used for degreasing and sintering of stainless steel and ceramic powder products. The disadvantages of high consumption and low production efficiency.

Utility model content

The technical problem to be solved by the utility model is to provide a vacuum degreasing, sintering and quenching integrated furnace that can complete the dewaxing, sintering and gas quenching process in one process, with simple production process, high production efficiency and low energy consumption.

In order to solve the above technical problems, the vacuum degreasing, sintering and quenching integrated furnace provided by the utility model includes a furnace body and a furnace hearth, and a fan corresponding to the furnace hearth is arranged on the furnace body, and the outlet end of the fan fan is provided with The current collector and the wind guide cover corresponding to the furnace are also provided with a radiator at the outlet end of the fan.

The fan is a centrifugal fan with a fully sealed structure.

The integrated furnace for vacuum degreasing, sintering and quenching adopts the above technical scheme. After vacuum degreasing and sintering in the furnace body, it is filled with non-oxidizing gas, and the fan and radiator are started to perform gas quenching heat treatment in a very short few minutes. The temperature in the furnace is lowered from 1550°C to within 100°C to realize rapid cooling in the furnace and improve production efficiency. The fan adopts a centrifugal fan with a fully sealed structure without vacuum leakage. The overall structure is compact, the floor area is small, and the energy consumption is low.

In summary, the utility model can complete the degreasing, sintering and gas quenching processes in one process, simplifies the production process, improves the production efficiency, has a compact overall structure, a small footprint, and low energy consumption.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the cooling part of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

Referring to Figure 1 and Figure 2, the furnace body 1 is a horizontal single-chamber (or double-chamber) front and rear double-door structure, the shell is a water-cooled jacket, the inner and outer layers are made of stainless steel SUS304, and the furnace door and furnace body flange are made of carbon structure Steel Q235A (inner layer 8mm, outer layer 6mm), the furnace 2 is square, composed of soft carbon felt and hard carbon felt composite heat shield, graphite heating element, and sealed graphite box for degreasing respectively from outside to inside. The furnace doors at both ends (that is, both ends of the furnace) are equipped with furnace insulation doors. When the furnace door is closed, the inner insulation doors seal the furnace ends to prevent the heat from radiating in the furnace. The insulation door of the furnace is equipped with a dynamic sealing opening and closing device, which opens to form an air duct during rapid cooling. The heating element is connected to the outside through the water-cooled electrode, which has a long service life. The heating element adopts plate structure, which is easy to disassemble. The heating chamber uses graphite rods as the heating element, with reasonable layout, good furnace temperature uniformity and long service life. The furnace is equipped with a special temperature chamber for powder metallurgy products to ensure uniform heating of powder metallurgy products in the furnace without over-burning and sintering defects; for safety, the furnace body 1 is equipped with a safety valve. The furnace body 1 is provided with a fully-sealed centrifugal fan corresponding to the furnace 2. The fully-sealed centrifugal fan is composed of a centrifugal impeller 6 and a motor 7. The outlet of the centrifugal impeller 6 is provided with a current collector 5 and The air guide 3 corresponding to the furnace 2 is provided with a radiator 4 inside the air guide 3 at the outlet end of the centrifugal impeller 3 .

See Figure 1 and Figure 2. After vacuum degreasing and sintering in the furnace, Ar gas is filled, and the fan and radiator are started to circulate and cool continuously for gas quenching heat treatment. The temperature in the furnace can be dropped from 1550°C to Within 100 °C, the temperature in the furnace can be cooled rapidly and the production efficiency can be improved. The fan adopts a centrifugal fan with a fully sealed structure without vacuum leakage. The overall structure is compact, the floor area is small, and the energy consumption is low. The electronic control system adopts microcomputer for program control, and all operations are automatic (manual operation can also be used) from the workpiece entering the furnace to the end of air cooling.

The vacuum degreasing, sintering and gas quenching integrated furnace is a single-chamber (or double-chamber) horizontal vacuum heat treatment equipment with the functions of vacuum degreasing, vacuum sintering and gas quenching. The organic combination of sintering and quenching heat treatment has the advantages of multi-function and low energy consumption. This equipment is especially suitable for hard alloy products that require direct quenching heat treatment after sintering, and can also be used for vacuum quenching of tool steel, die steel, high alloy steel, stainless steel, copper alloy, etc., nickel-based, copper-based, silver-based brazing Vacuum brazing of products such as vacuum brazing, degassing treatment, annealing, tempering and other vacuum heat treatments can also be carried out. It can also be used for degreasing and sintering of stainless steel and ceramic powder products.

Claims (2)

1, a kind of vacuum degreasing sintered quenching integrated furnace, comprise body of heater (1) and burner hearth (2), it is characterized in that: on described body of heater (1), be provided with and the corresponding blower fan of described burner hearth (2), described blower fan exit end is provided with current collector (5) and the wind scooper (3) corresponding with described burner hearth (2), also is provided with scatterer (4) at described blower fan exit end.

2, vacuum degreasing sintered quenching integrated furnace according to claim 1 is characterized in that: described blower fan is the centrifugal fan of all-sealed structure.

Images