Surface heat treatment device suitable for large-sized metallic object

Abstract

The invention discloses a surface heat treatment device suitable for a large-sized metallic object. The surface heat treatment device suitable for the large-sized metallic object comprises a heat treatment cavity. A first gate frame is installed on one side of the heat treatment cavity. A second gate frame is installed on the other side of the heat treatment cavity. Fixing plates are installed onthe top of the side, close to the heat treatment cavity, of the first gate frame and the top of the side, close to the heat treatment cavity, of the second gate frame. The bottoms of the fixing platesare provided with second electric lifting rods. A lifting plate is installed at the bottoms of the second electric lifting rods. A chemical liquid box is installed on one side of the top of the lifting plate. The motor can be started through a control panel, by means of mutual cooperation between first round gears and second round gears, conveying rollers are driven to rotate, and then the large-sized metallic object is driven to move; and compared with chain conveyance which is prone to causing the phenomenon that a chain falls off or breaks up, the surface heat treatment device adopts geartransmission and does not need frequent chain replacement, so that the possibility of chain fall is avoided, in this way, the manpower and material resources can be saved, and the work efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of surface heat treatment, in particular to a surface heat treatment device suitable for large-sized metal objects. Background technique [0002] Surface heat treatment is a metal heat treatment process that changes the mechanical properties of the surface layer by heating and cooling the metal surface. Surface quenching is the main content of surface heat treatment. Grinding performance and anti-fatigue performance, in principle, the workpiece is rapidly heated by a heat source, and when the surface temperature of the part reaches the critical point, it is cooled rapidly, so that the surface layer of the workpiece obtains a hardened structure and the core maintains the original structure. In order to achieve the purpose of heating only the surface of the workpiece, the heat source used is required to have a high energy density. At present, in the surface heat treatment device for large-scale metal objects, ...

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Problems solved by technology

[0002] Surface heat treatment is a metal heat treatment process that changes the mechanical properties of the surface layer by heating and cooling the metal surface. Surface quenching is the main content of surface heat treatment. Grinding performance and anti-fatigue performance, in principle, the workpiece is rapidly heated by a heat source, and when the surface temperature of the part reaches the critical point, it is cooled rapidly, so that the surface layer of the workpiece obtains a hardened structure and the core maintains the original structure. In order to achieve the purpose of heating only the surface of the workpiece, the heat source used is required to have a high energy density. At present, in the surface heat treatment device for large-scale metal objects, the transmission device is driven by a chain to drive the roller to rotate, and the chain drive It is easy to drop the chain or the chain breaks, and the chain needs to be replaced frequently, which is time-consuming and laborious. In addition, the current surface heat treatment devices for large-scale metal objects are all single-heating treatment methods, so the effect is not good. Secondly, when cooling, cooling The liquid cannot be reused and recycled, resulting in a waste of resources, and the size of the current surface heat treatment device for large-sized metal objects is fixed, which cannot be applied to metal objects of different sizes

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