Protective atmosphere short-period roll bottom type continuous annealing furnace production line

Abstract

The invention discloses a protective atmosphere short-period roll bottom type continuous annealing furnace production line. The protective atmosphere short-period roll bottom type continuous annealingfurnace production line comprises a feeding table, a feeding vacuum chamber, a pre-heating chamber, a heating chamber, a thermostable chamber, a slow cooling chamber, a discharging vacuum chamber anda discharging table. The protective atmosphere short-period roll bottom type continuous annealing furnace production line is mainly suitable for spheroidizing annealing, softening annealing, full annealing, distressing, normalization, carbon restoration and other heat treatment processes of low-carbon steel, low alloy steel, bearing steel and other wires, discs, bars, steel pipes and forged casting. The protective atmosphere short-period roll bottom type continuous annealing furnace production line is automatically controlled through a computer and a PLC program, so that all equipment is closely connected, and continuity of feeding is achieved. Meanwhile, the whole device is good in sealing performance, low in energy consumption and high in safety. Intellectualization and automation of production are achieved, and production efficiency and product quality are improved.

Description

technical field [0001] The invention relates to a production line of a short-period roller hearth continuous annealing furnace in a protective atmosphere. Background technique [0002] The annealing furnace is mainly used for heat treatment processes such as spheroidizing annealing, softening annealing, complete annealing, stress relief, normalization, and recarburization of low-carbon steel, low-alloy steel, and bearing steel such as wire rods, disk elements, bars, steel pipes, and forgings. ; Existing annealing furnaces generally have an integral structure, and there are no specific isolation measures between the various processing processes, resulting in certain interference between the processes during the heat treatment of the workpiece, which affects the normal production; at the same time, the entire furnace The internal space of the body is large, and more energy is needed to maintain the temperature inside the furnace body during heat treatment, resulting in increas...

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Problems solved by technology

[0002] The annealing furnace is mainly used for heat treatment processes such as spheroidizing annealing, softening annealing, complete annealing, stress relief, normalization, and recarburization of low-carbon steel, low-alloy steel, and bearing steel such as wire rods, disk elements, bars, steel pipes, and forgings. ; Existing annealing furnaces generally have an integral structure, and there are no specific isolation measures between the various processing processes, resulting in certain interference between the processes during the heat treatment of the workpiece, which affects the normal production; at the same time, the entire furnace The internal space of the body is large, and more energy is needed to maintain the temperature inside the furnace body during heat treatment, resulting in increased energy loss and increased production costs; when the workpiece needs to be cooled, due to the high temperature inside the furnace body, As a result, the cooling of the workpiece is slow, so that the workpiece cannot be quickly released from the furnace, which affects the production efficiency; at the same time, due to the large space of the furnace body, it is difficult to seal, resulting in poor sealing, and oxygen can easily enter the interior of the furnace body, making it difficult to heat the workpiece during heat treatment. It often leads to decarburization of the workpiece; at the same time, the overall volume of the equipment is large, it takes up more space, and the cost is higher; at the same time, the existing annealing furnace can only meet the heat treatment requirements of the same process for the same workpiece each time, and its function is relatively single. Suitable for current development needs

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