Plasma 3D (three-dimensional) fast forming equipment and method for rollers

Abstract

The invention discloses plasma 3D (three-dimensional) fast forming equipment and method for rollers. The equipment is composed of a monitoring system, a plasma beam machining system and a horizontal printing platform for holding to-be-formed rollers; the plasma beam machining system comprises a plasma generator, a gas supply device, a wire conveying device used for continuously conveying out machined wires and a printing position adjustment device; the monitoring system comprises a position adjustment 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 method includes the steps of 1, three dimensional model acquisition and hierarchical slicing, 2, scanning path filling, 3, printing path acquisition and 4, printing layer by layer from inside to outside. The equipment and method is reasonable in design, simple to operate, high in forming efficiency and good in using effect, and the formed rollers are high in quality as the forming process is conducted directly under the atmospheric environment.

Description

technical field [0001] The invention belongs to the technical field of rapid prototyping, and in particular relates to a roll plasma 3D rapid prototyping equipment and a prototyping 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 is mainly subjected to dynamic and static loads, wear and temperature changes during rolling. The roll mainly includes a core (also called a roll core, including a roll shaft and a roll neck) and an outer layer of a roll body (also called an outer layer or a 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 ...

AI Technical Summary

Problems solved by technology

[0004] First, when the centrifugal casting method is used to manufacture rolls, molten steel smelting is first required. During the smelting process, problems such as spalling of ladle refractories and insufficient deoxidation of molten steel and insufficient slag removal may cause pollution to molten steel, resulting in reduced performance or scrapping of the rolls;

[0005] Second, the elements in the centrifugal casting process are likely to cause segregation due to different specific gravity, resulting in a decrease in the performance of the roll;

[0006] Third, centrifugally cast rolls need to be heat treated after casting, the process is complex, and the existing heat treatment system is likely to cause microcracks, cracks or even scrapping of the rolls

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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