Annealing sealing device

Abstract

The invention relates to the field of heat treatment equipment, in particular to an annealing sealing device. The annealing sealing device comprises an annealing furnace. Two supports perpendicular to an inlet of the annealing furnace are symmetrically arranged on the side wall at the position of an inlet of the annealing furnace. The end portions of the two supports are provided with a connection plate. The supports are provided with sliding grooves. The sliding grooves of the two supports are internally connected with fulcrum bars in a sliding manner. The ends, far away from the sliding grooves, of the fulcrum bars are rotationally connected with rolling wheels. A sealing cover arranged on the inlet of the sealing furnace is arranged between the two rolling wheels, and the upper inner wall and the lower inner wall of the sealing cover are connected with a plurality of sets of sealing pieces in a hinged manner, wherein the sealing pieces are intersected, rolling balls are hinged to the end portions of the sealing pieces, and the end portions at the feeding position of the sealing cover are perpendicularly provided with springs connected with the connection plate. According to the annealing sealing device, the situation that high-temperature gas appearing at the inlet position of the annealing furnace scalds a worker can be avoided, workpieces can be preheated, and the temperature jump on the surfaces of the workpieces is prevented.

Description

technical field [0001] The invention belongs to the field of heat treatment equipment, and in particular relates to an annealing sealing device. Background technique [0002] At present, in the production process of mechanical workpiece casting, heat treatment is an important link. The heat treatment process is generally divided into four stages, namely heating section, heat preservation section, fast cooling section and slow cooling section. It is heated internally to the temperature required by the process and enters the heat preservation section; within a stable temperature range, it is kept for a certain period of time to complete the transformation from cementite to ferrite in the metallographic structure, and then enters the rapid cooling section to rapidly reduce the temperature. Cool to a certain temperature, enter the slow cooling section, and complete the transformation from pearlite to ferrite at a stable cooling rate. After the workpiece undergoes the above heat...

AI Technical Summary

Problems solved by technology

[0003] The problem existing in the prior art is: the surface temperature of the newly produced workpiece is low. Once it is directly sent to a high-temperature annealing furnace, the crystal lattice on the surface of the workpiece will be deteriorated due to the sudden change in stress due to the sudden change in temperature, so that Reduced mechanical properties of the workpiece surface

During the feeding process, when the workpiece enters the annealing furnace, the opening and closing of the sealing roller will cause gas leakage in the annealing furnace; the temperature of the gas in the annealing furnace is thousands of degrees, and the staff at the entrance of the annealing furnace are extremely easy to be burned or scalded

Images