Plasma 3D printing remanufacturing equipment and method for roller

Abstract

The invention discloses plasma 3D printing remanufacturing equipment and method for a roller. The equipment comprises a monitoring system, a plasma beam processing system, a machining device for machining a to-be-repaired roller and a horizontal printing table for holding the to-be-repaired roller, wherein the plasma beam processing system comprises a plasma generator, a printing position adjustment device, a gas supply device and a powder feeder, and the printing position adjustment device comprises a horizontal moving device and a printing distance adjustment device; the monitoring system comprises a horizontal moving controller, a temperature detection unit, a distance detection unit, a printing distance adjustment controller and a rotation controller, and the temperature detection unit and the printing distance adjustment controller form a temperature control device. The remanufacturing method comprises steps as follows: 1, roller defect detection; 2, roller repair. The plasma 3D printing remanufacturing equipment is reasonable in design, simple and convenient to operate, high in efficiency and good in use effect, a forming chamber is not required to be closed, the roller is repaired directly in the atmospheric environment, and the quality of the repaired roller is good.

Description

technical field [0001] The invention belongs to the technical field of rapid prototyping, and in particular relates to a roll plasma 3D printing remanufacturing equipment and method. Background technique [0002] The roll is an important part of the rolling mill in the rolling mill. It uses the pressure generated by a pair or a group of rolls to roll and roll the steel. It mainly bears the influence of dynamic and static loads, wear and temperature changes during rolling. The roll includes a core (also called roll core, including roll shaft and roll neck) and an outer layer of the roll body (also called outer layer or working layer) coaxially arranged outside the core. The outer layer of the roll body and the core of the composite roll are made of different materials. The two materials are metallurgically bonded. The outer layer of the roll body is the working layer and the outer surface is the roll surface. The roll can meet the wear resistance of the roll body by the roll...

AI Technical Summary

Problems solved by technology

For example, when the molten pool is protected by an inert atmosphere, the temperature of the molten pool is cooled too quickly, which makes the stress of the cladding layer higher. At the same time, it is easy to cause the powder material to scatter, resulting in insufficient melting, resulting in poor performance of the remanufactured roll, or even cracking and scrapping.

If the roll remanufacturing process is carried out in a protective atmosphere, due to the large size and weight of the roll, the clamping process in the protective atmosphere is complicated and takes a long time, which will lead to low efficiency of laser cladding remanufacturing rolls;

[0008] Third, the laser cladding remanufacturing equipment is not equipped with a processing system, and the surface roughness of the remanufactured rolls is very high, which cannot be directly applied to the steel rolling production line

But at present, there are three main problems in the selective electron beam rapid prototyping technology: first, the electron beam rapid prototyping technology needs a vacuum environment to form the energy source electron beam and avoid the oxidation of metal parts during the forming process

This makes the structure of the electron beam rapid prototyping equipment complex, the size of the molded parts is limited, and the molding equipment is expensive; second, the electron beam rapid prototyping technology requires a powder spreading system or a molding material supply system

This makes the structure of the electron beam rapid prototyping equipment complex, not only the size of the formed parts is limited, but also the forming efficiency is low; third, in order to ensure the mechanical properties of the parts, the electron beam rapid prototyping technology requires spherical metal powder with good fluidity

This makes SLM rapid prototyping equipment expensive to run

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