Pit-type bright heat treatment furnace adopts electric heating method, mainly for small batch or slender shaft workpieces without oxidation or bright heat treatment. It is also suitable for all kinds of carbon steel strip, wire, wire rod; metal parts and other non-oxidizing or bright annealing.

Structure:

Adopting the form of furnace liner structure, the furnace liner and furnace cover adopt water-cooled rubber sealing to ensure airtightness, with vacuum function. In order to make the workpiece heated uniformly and improve the speed of temperature rise and fall, the upper end of the furnace cover is equipped with a heat flow blower and a deflector device, which implements a strong convection cycle for the protective atmosphere in the furnace. Cooling ducts are provided in the furnace bottom or the furnace guts, and the upper end is equipped with exhaust pipe plugs, so that the cold air is blown by the frequency conversion pressure fan to cool down the temperature quickly when cooling, which effectively solves the problem of difficult cooling of the well furnace. In the heat treatment process, the material is always placed under the protection of high-purity nitrogen or hydrogen, so that the surface of the treated material is bright and oxidation-free.

The furnace generally consists of the following components: heating furnace body, stainless steel corrugated furnace liner, hot air flow machine, vacuum pump, protective gas pipe valve, electronic control system, cold air cooling and so on. The furnace protection gas pressure monitoring, adjustable flow, overpressure alarm and automatic pressure relief function. Adopting intelligent temperature control instrument, automatic PID temperature control in accordance with the process requirements, automatically complete the entire heat treatment temperature process control. And the whole process of temperature change is recorded and stored by U disk, which is visualized on the computer and can be printed out.

Scope of application: carbon steel strip, wire; copper wire, coils; metal parts and other non-oxidizing or bright annealing.

Pit-type bright annealing furnace, pit-type furnace RS pit-type bright annealing furnace, pit-type furnace

I. Main technical parameters:

1、Effective charging diameter: in 800-2000mm

2、Effective charging depth：61500-3500mm

3、Commonly used working temperature: ≤700℃

Power: 960-450KW

4、Heating

5、Fan

Power: 4-37KW

6、Protective gas consumption: 3-12Nm3/h

Second, Remarks:

1、If no protective gas is added for less oxidizing heat treatment, no furnace gall bladder structure, temperature control by independent partition, the working temperature can reach 1100℃.

2、If high purity nitrogen is used as protective gas, heat-resistant steel furnace chamber and strong circulation fan are used, the working temperature can reach 850℃.

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