CN2569068Y - Whole hydrogen strong conversion cover furnace - Google Patents

Abstract

The utility model relates to a strong conversion cover furnace using the shield gas to carry out heat treatment to the metal materialm, which is composed of a furnace platform, a hot-flow fan, a combustion nozzle and a heating mantle casing. The utility model injects the pure hydrogen shield gas into a furnace chamber through the hot-flow fan to cause the shield gas to carry out the forced circulation in the working components, in order to reduce the oxidation and adhesive joint to the working components. Simultaneously, through improving the sealing connection, the utility model enhances the work efficiency, reduces the production time, saves the power consumption and can carry out heat treatment to the high-precision cold-rolled sheets.

Description

The perhydro strong convection bell type furnace

Technical field: the utility model relates to a kind of bell furnace that steel, non-ferrous metal band are heat-treated of being used for, and particularly relates to a kind of strong convection bell type furnace that uses protective gas that metal material is heat-treated.

Background technology:, do not have relevant patent documentation report according to retrieval to patent documentation.In recent years, development along with the market economic system reform, dynamo-electric portion of country classifies bell furnace as import substitutes, to satisfy the adjustment needs of China to the steel grade structure, each big steel mill, non-ferrous metal industry begins to enlarge and increase flat cold-rolled sheet, the non-ferrous metal band, the output of tubing and project, because of the original equipment that uses mostly leans on import, and involve great expense, some can't be fit to the national conditions of China, and homemade bell furnace is to adopt the sand seal furnace structure, it is low to exist production efficiency, dust is many, environmental pollution is serious, material technical performance after the heat treatment does not reach defectives such as standard-required, and control mode is backward, has a lot of human factors.At above defective, the purpose of this utility model just provides a kind of perhydro strong convection bell type furnace that brand-new design is arranged at aspects such as control mode, structure, Sealing Technology and heat treatments.

Summary of the invention: the purpose of this utility model is achieved in that the perhydro strong convection bell type furnace is by table; Hot-flow fan; burner; the heating mantles housing is formed; it is characterized in that: flame-proof thermal insulation material in the phase embedding in described heating mantles housing; between heating furnace and furnace chamber, also be provided with the ripple inner cover; heating mantles housing and ripple inner cover are cup-like structure; rim of a cup and table sealing are joined; adopted high temperature resistant silica gel Sealing Technology; bottom at table is equipped with Hot-flow fan; a large amount of pure hydrogen blows in the furnace chamber through Hot-flow fan equably as protective gas, forms the forced circulation air-flow to the cold-rolled strip in the furnace chamber; non-ferrous metal; chain; welding rod; standard component; the bright annealing that watch materials etc. eliminate stress.Equipment is being heat-treated in the process material; after mixing suitable protective gas; can make processed material surface brighting non-oxidation; and can prevent phenomenons such as steel surface decarburization and copper material surface dezincify effectively; it has abandoned traditional acid cleaning process; shorten heat treatment cycle, stopped environmental pollution, reduced production cost.

Description of drawings: Fig. 1 is structural representation 1. tables 2. Hot-flow fans 3. burners 4. heating mantles housings 5. flame-proof thermal insulation materials 6. ripple inner covers 7. furnace chambers of the present utility model

The specific embodiment: the perhydro strong convection bell type furnace mainly is made up of heating mantles housing 4, table 1, Hot-flow fan 2, flame-proof thermal insulation material 5 in the phase embedding in described heating mantles housing 4, between heating mantles 4 and furnace chamber 7, also be provided with ripple inner cover 6, heating mantles housing 4 and ripple inner cover 6 are cup-like structure, high temperature resistant silica gel Sealing Technology has been adopted in rim of a cup and table 1 sealing, improve the sealing effectiveness of former useful sand, improved environment, reduced pollution.When burning gases produce high temperature when burner 3 sprays into heating mantles housing 4 with ripple inner cover 6 internal combustion, owing to be provided with flame-proof thermal insulation material 5 in the heating mantles housing 4, the instantaneous conduction of high temperature that produces is on inner cover, by inner cover the mode of heat by radiation and convection current is delivered on the workpiece of processing then, owing to change the straight tube of inner cover into ripple struction, strengthen the rigidity and the intensity of ripple inner cover 6, reduced thermal stress, improved the service life of ripple inner cover 6 greatly.In order to guarantee to processing component, particularly in the heat treatment process to the high precision flat cold-rolled sheet below the 0.08mm, guarantee not bondingly, and can prevent phenomenons such as steel surface dezincify effectively.In order to guarantee that furnace temperature is even; not cooling rapidly; the utility model has been set up strong circulative convection system; the slow cooling system; method is to be provided with Hot-flow fan 2 devices in the bottom of table 1; protective gas with highly purified hydrogen during as material heat treatment (is 7 times of nitrogen because of the thermal conductivity of hydrogen; and density only is 1/14 of nitrogen; and hydrogen has good reproducibility) send in the furnace chamber 7 at a high speed by Hot-flow fan 2; and forcibly pure hydrogen gas is circulated between process component; the parts of processing have been played the protective effect of essence; simultaneously because forced circulation; make the temperature in the furnace chamber 7 remain even up and down; avoided owing to the influence of the non-uniform temperature in the furnace chamber 7 process component; thereby fundamentally shortened heat treatment cycle; production efficiency has improved three times than originally; energy savings nearly 30%; the heat treatment that contrasts higher accurate flat cold-rolled sheet can remain not bonding; can reach desirable; deep drawability with mild steel obtains the high-carbon steel spheroidising of splendid Microstructure Uniformity and soft.

Claims (1)

1. the perhydro strong convection bell type furnace mainly is made up of heating mantles housing (4), table (1), Hot-flow fan (2) and burner (3), it is characterized in that: flame-proof thermal insulation material (5) in the phase embedding in described heating mantles housing (4), between heating mantles (4) and furnace chamber (7), also be provided with ripple inner cover (6), heating mantles housing (4) and ripple inner cover (6) are cup-like structure, and high temperature resistant silica gel sealing has been adopted in rim of a cup and table (1) sealing.

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