Large-scale average-temperature table type low-temperature annealing furnace

Abstract

The invention discloses a large-scale average-temperature table type low-temperature annealing furnace, and belongs to the technical field of gas heating furnaces. Key points of the technical scheme provided by the invention are as follows: the large-scale average-temperature table type low-temperature annealing furnace comprises a furnace body, a furnace door, an air preheating unit, gas heat supply devices, an average-temperature unit and a hot air circulation device, wherein the air preheating unit consists of an air inlet pipe, a preheating cavity, a U-shaped communicating pipe, heat exchange pipes and an air supply pipe; each gas heat supply device consists of a gas chamber and a gas burner, and the gas burner is fixed on the side wall of the gas chamber; the average-temperature unit consists of average-temperature plates, rectangular nozzles and a hot air main; and the hot air circulation device consists of a circular blower, an air inlet pipe and an air outlet pipe. The large-scale average-temperature table type low-temperature annealing furnace has the advantages that the manufacturing is precise, practicable and safe, the operation is reliable, the pollution is small, the working efficiency is high, and workpieces in the furnace can be uniformly heated, so that relatively high furnace temperature uniformity is obtained.

Description

technical field [0001] The invention belongs to the technical field of gas heating furnaces, and in particular relates to a large-scale uniform temperature bench-type low-temperature annealing furnace. Background technique [0002] For large welding workpieces, stress relief annealing treatment is required after welding, and then machining. The quality of the heat treatment of the workpiece plays an important role in the machining accuracy and the performance of the workpiece. The uniformity of the furnace temperature is very important in the furnace design. An important link, the uniformity of the furnace temperature directly affects the heat treatment quality of the workpiece. Due to the setting problem of the general annealing furnace during operation, the temperature control accuracy is low and the work efficiency is low. Due to the poor sealing setting, the fuel consumption is high, and the equipment is in It is easy to generate noise and harmful gas during operation, a...

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Problems solved by technology

[0002] For large welding workpieces, stress relief annealing treatment is required after welding, and then machining. The quality of the heat treatment of the workpiece plays an important role in the machining accuracy and the performance of the workpiece. The uniformity of the furnace temperature is very important in the furnace design. An important link, the uniformity of the furnace temperature directly affects the heat treatment quality of the workpiece. Due to the setting problem of the general annealing furnace during operation, the temperature control accuracy is low and the work efficiency is low. Due to the poor sealing setting, the fuel consumption is high, and the equipment is in It is easy to generate noise and harmful gas during operation, and the heat resistance effect is poor, which brings certain safety hazards to the work

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