Trolley type gas preheating furnace

Abstract

The invention discloses a trolley type gas annealing furnace and belongs to the technical field of gas heating furnaces. The key point of the technical scheme is as follows: a trolley type gas preheating furnace comprises a furnace body, a furnace door, an air preheating device, a gas heating device and a uniform-temperature device. A part between a trolley device and the furnace body is sealed by a pressing device. The air preheating device comprises a gas inlet pipe, a preheating chamber, a U-shaped connection pipe, a heat exchange pipe and a gas supply pipe. The gas heating device comprises a gas chamber and a gas burner; the gas burner is fixed to the side wall of the gas chamber; the uniform-temperature device comprises a uniform-temperature plate, a rectangular nozzle and a hot air main pipeline. The trolley type gas preheating furnace is practical and safe, is perfect in manufacture, reliable in operation, low in pollution and high in operation efficiency, and is capable of uniformly heating workpieces in the furnace so as to achieve higher furnace temperature uniformity.

Description

Technical field [0001] The invention belongs to the technical field of gas heating furnaces, and particularly relates to a trolley type gas preheating furnace. Background technique [0002] For large welding workpieces, stress relief annealing treatment is required after welding, and then mechanical processing. 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. The important link is that the uniformity of furnace temperature directly affects the heat treatment quality of the workpiece. During the operation of the general annealing furnace, due to the setting problems, 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 It is easy to produce noise and harmful gases during operation, and the heat resistance effe...

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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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